mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-26 12:26:11 +00:00
Code Issues Releases Wiki Activity

NFS client updates for Linux 5.13

Browse source 
Highlights include:
 
 Stable fixes:
 - Add validation of the UDP retrans parameter to prevent shift out-of-bounds
 - Don't discard pNFS layout segments that are marked for return
 
 Bugfixes:
 - Fix a NULL dereference crash in xprt_complete_bc_request() when the
   NFSv4.1 server misbehaves.
 - Fix the handling of NFS READDIR cookie verifiers
 - Sundry fixes to ensure attribute revalidation works correctly when the
   server does not return post-op attributes.
 - nfs4_bitmask_adjust() must not change the server global bitmasks
 - Fix major timeout handling in the RPC code.
 - NFSv4.2 fallocate() fixes.
 - Fix the NFSv4.2 SEEK_HOLE/SEEK_DATA end-of-file handling
 - Copy offload attribute revalidation fixes
 - Fix an incorrect filehandle size check in the pNFS flexfiles driver
 - Fix several RDMA transport setup/teardown races
 - Fix several RDMA queue wrapping issues
 - Fix a misplaced memory read barrier in sunrpc's call_decode()
 
 Features:
 - Micro optimisation of the TCP transmission queue using TCP_CORK
 - statx() performance improvements by further splitting up the tracking
   of invalid cached file metadata.
 - Support the NFSv4.2 "change_attr_type" attribute and use it to
   optimise handling of change attribute updates.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEESQctxSBg8JpV8KqEZwvnipYKAPIFAmCVLooACgkQZwvnipYK
 APJB5BAAtIJyhx40ooMBzcucDmXd1qovlKsb8ZlvnSI6c7wvHhFPNk9z4zwThnjL
 FpVYzJzK6XzAQY/PtgbrPwnSUmW925ngPWYR/hiYe+OGPBnYV+tXP8izCyEkNgMg
 45goDOxojGWl7AGTuAJiKcDSdH9PyIrbvt28iwcNSGjslasGSbAoL/836l4OIGr1
 Ymxs/NDML11dPco8GIKLGtHd8leFGleDx089VeNsgud8MdaFErp16O5Iz8DdzRKd
 W1l2zDMb05j8eDZIfy3w3FyrLkDXA+KgLSADiC8TcpxoadPaQJMeCvoIq8oqVndn
 bZBoxduXdLgf54Aec0WnNKFAOyc7pGvZoSNmFouT7EGV73g+g1LQ+ZbEE1bb8fCQ
 XHqCVaBt2+47NiTUgdxjXlZRfcn8fYKx0tVxfG3mQVMXUAWfsjmMyQMNgijDRJI2
 8Wz3lZMRGMILbR9j4QpP1biVy/2zGNWG/TB5ZZyZMSY4uT+aOpzlqdknb4UsRaSp
 f7MfmB7xEWpS4DJr9RIBrJ/hIdnMu1mNInxDPFo5Kl5HNp4TaPm2dPir2ZD2wMZI
 daURTX7giUhpE15ZebQDBqWD+mTR0bVDqLLeo131JRmMfMEHugNrr49xe+NkBu/R
 QWnFzgkGdQsOeiKRRwEUuhsi74JspqfwzdZzHqcRM5WuXVvBLcA=
 =h01b
 -----END PGP SIGNATURE-----

Merge tag 'nfs-for-5.13-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client updates from Trond Myklebust:
 "Highlights include:

  Stable fixes:

   - Add validation of the UDP retrans parameter to prevent shift
     out-of-bounds

   - Don't discard pNFS layout segments that are marked for return

  Bugfixes:

   - Fix a NULL dereference crash in xprt_complete_bc_request() when the
     NFSv4.1 server misbehaves.

   - Fix the handling of NFS READDIR cookie verifiers

   - Sundry fixes to ensure attribute revalidation works correctly when
     the server does not return post-op attributes.

   - nfs4_bitmask_adjust() must not change the server global bitmasks

   - Fix major timeout handling in the RPC code.

   - NFSv4.2 fallocate() fixes.

   - Fix the NFSv4.2 SEEK_HOLE/SEEK_DATA end-of-file handling

   - Copy offload attribute revalidation fixes

   - Fix an incorrect filehandle size check in the pNFS flexfiles driver

   - Fix several RDMA transport setup/teardown races

   - Fix several RDMA queue wrapping issues

   - Fix a misplaced memory read barrier in sunrpc's call_decode()

  Features:

   - Micro optimisation of the TCP transmission queue using TCP_CORK

   - statx() performance improvements by further splitting up the
     tracking of invalid cached file metadata.

   - Support the NFSv4.2 'change_attr_type' attribute and use it to
     optimise handling of change attribute updates"

* tag 'nfs-for-5.13-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (85 commits)
  xprtrdma: Fix a NULL dereference in frwr_unmap_sync()
  sunrpc: Fix misplaced barrier in call_decode
  NFSv4.2: Remove ifdef CONFIG_NFSD from NFSv4.2 client SSC code.
  xprtrdma: Move fr_mr field to struct rpcrdma_mr
  xprtrdma: Move the Work Request union to struct rpcrdma_mr
  xprtrdma: Move fr_linv_done field to struct rpcrdma_mr
  xprtrdma: Move cqe to struct rpcrdma_mr
  xprtrdma: Move fr_cid to struct rpcrdma_mr
  xprtrdma: Remove the RPC/RDMA QP event handler
  xprtrdma: Don't display r_xprt memory addresses in tracepoints
  xprtrdma: Add an rpcrdma_mr_completion_class
  xprtrdma: Add tracepoints showing FastReg WRs and remote invalidation
  xprtrdma: Avoid Send Queue wrapping
  xprtrdma: Do not wake RPC consumer on a failed LocalInv
  xprtrdma: Do not recycle MR after FastReg/LocalInv flushes
  xprtrdma: Clarify use of barrier in frwr_wc_localinv_done()
  xprtrdma: Rename frwr_release_mr()
  xprtrdma: rpcrdma_mr_pop() already does list_del_init()
  xprtrdma: Delete rpcrdma_recv_buffer_put()
  xprtrdma: Fix cwnd update ordering
  ...
This commit is contained in:
Linus Torvalds 2021-05-07 11:23:41 -07:00
commit a647034fe2
48 changed files with 1120 additions and 723 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
fs/Kconfig
View file

@ -338,8 +338,8 @@ config NFS_COMMON
default y
config NFS_V4_2_SSC_HELPER
tristate
default y if NFS_V4=y || NFS_FS=y
bool
default y if NFS_V4_2
source "net/sunrpc/Kconfig"
source "fs/ceph/Kconfig"

17
fs/nfs/callback_proc.c
View file

@ -137,12 +137,12 @@ static struct inode *nfs_layout_find_inode_by_stateid(struct nfs_client *clp,
list_for_each_entry_rcu(lo, &server->layouts, plh_layouts) {
if (!pnfs_layout_is_valid(lo))
continue;
if (stateid != NULL &&
!nfs4_stateid_match_other(stateid, &lo->plh_stateid))
if (!nfs4_stateid_match_other(stateid, &lo->plh_stateid))
continue;
if (!nfs_sb_active(server->super))
continue;
inode = igrab(lo->plh_inode);
if (nfs_sb_active(server->super))
inode = igrab(lo->plh_inode);
else
inode = ERR_PTR(-EAGAIN);
rcu_read_unlock();
if (inode)
return inode;
@ -176,9 +176,10 @@ static struct inode *nfs_layout_find_inode_by_fh(struct nfs_client *clp,
continue;
if (nfsi->layout != lo)
continue;
if (!nfs_sb_active(server->super))
continue;
inode = igrab(lo->plh_inode);
if (nfs_sb_active(server->super))
inode = igrab(lo->plh_inode);
else
inode = ERR_PTR(-EAGAIN);
rcu_read_unlock();
if (inode)
return inode;

20
fs/nfs/client.c
View file

@ -476,7 +476,6 @@ void nfs_init_timeout_values(struct rpc_timeout *to, int proto,
to->to_maxval = to->to_initval;
to->to_exponential = 0;
break;
#ifndef CONFIG_NFS_DISABLE_UDP_SUPPORT
case XPRT_TRANSPORT_UDP:
if (retrans == NFS_UNSPEC_RETRANS)
to->to_retries = NFS_DEF_UDP_RETRANS;
@ -487,7 +486,6 @@ void nfs_init_timeout_values(struct rpc_timeout *to, int proto,
to->to_maxval = NFS_MAX_UDP_TIMEOUT;
to->to_exponential = 1;
break;
#endif
default:
BUG();
}
@ -698,9 +696,18 @@ static int nfs_init_server(struct nfs_server *server,
/* Initialise the client representation from the mount data */
server->flags = ctx->flags;
server->options = ctx->options;
server->caps |= NFS_CAP_HARDLINKS|NFS_CAP_SYMLINKS|NFS_CAP_FILEID|
NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER|NFS_CAP_OWNER_GROUP|
NFS_CAP_ATIME|NFS_CAP_CTIME|NFS_CAP_MTIME;
server->caps |= NFS_CAP_HARDLINKS | NFS_CAP_SYMLINKS;
switch (clp->rpc_ops->version) {
case 2:
server->fattr_valid = NFS_ATTR_FATTR_V2;
break;
case 3:
server->fattr_valid = NFS_ATTR_FATTR_V3;
break;
default:
server->fattr_valid = NFS_ATTR_FATTR_V4;
}
if (ctx->rsize)
server->rsize = nfs_block_size(ctx->rsize, NULL);
@ -794,6 +801,7 @@ static void nfs_server_set_fsinfo(struct nfs_server *server,
server->maxfilesize = fsinfo->maxfilesize;
server->time_delta = fsinfo->time_delta;
server->change_attr_type = fsinfo->change_attr_type;
server->clone_blksize = fsinfo->clone_blksize;
/* We're airborne Set socket buffersize */
@ -935,6 +943,8 @@ struct nfs_server *nfs_alloc_server(void)
return NULL;
}
server->change_attr_type = NFS4_CHANGE_TYPE_IS_UNDEFINED;
ida_init(&server->openowner_id);
ida_init(&server->lockowner_id);
pnfs_init_server(server);

29
fs/nfs/delegation.c
View file

@ -114,7 +114,7 @@ nfs4_do_check_delegation(struct inode *inode, fmode_t flags, bool mark)
return ret;
}
/**
* nfs_have_delegation - check if inode has a delegation, mark it
* nfs4_have_delegation - check if inode has a delegation, mark it
* NFS_DELEGATION_REFERENCED if there is one.
* @inode: inode to check
* @flags: delegation types to check for
@ -481,6 +481,22 @@ int nfs_inode_set_delegation(struct inode *inode, const struct cred *cred,
if (freeme == NULL)
goto out;
add_new:
/*
* If we didn't revalidate the change attribute before setting
* the delegation, then pre-emptively ask for a full attribute
* cache revalidation.
*/
spin_lock(&inode->i_lock);
if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_CHANGE)
nfs_set_cache_invalid(inode,
NFS_INO_INVALID_ATIME | NFS_INO_INVALID_CTIME |
NFS_INO_INVALID_MTIME | NFS_INO_INVALID_SIZE |
NFS_INO_INVALID_BLOCKS | NFS_INO_INVALID_NLINK |
NFS_INO_INVALID_OTHER | NFS_INO_INVALID_DATA |
NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL |
NFS_INO_INVALID_XATTR);
spin_unlock(&inode->i_lock);
list_add_tail_rcu(&delegation->super_list, &server->delegations);
rcu_assign_pointer(nfsi->delegation, delegation);
delegation = NULL;
@ -488,11 +504,6 @@ int nfs_inode_set_delegation(struct inode *inode, const struct cred *cred,
atomic_long_inc(&nfs_active_delegations);
trace_nfs4_set_delegation(inode, type);
spin_lock(&inode->i_lock);
if (NFS_I(inode)->cache_validity & (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ATIME))
NFS_I(inode)->cache_validity |= NFS_INO_REVAL_FORCED;
spin_unlock(&inode->i_lock);
out:
spin_unlock(&clp->cl_lock);
if (delegation != NULL)
@ -674,7 +685,7 @@ void nfs_inode_evict_delegation(struct inode *inode)
}
/**
* nfs_inode_return_delegation - synchronously return a delegation
* nfs4_inode_return_delegation - synchronously return a delegation
* @inode: inode to process
*
* This routine will always flush any dirty data to disk on the
@ -697,7 +708,7 @@ int nfs4_inode_return_delegation(struct inode *inode)
}
/**
* nfs_inode_return_delegation_on_close - asynchronously return a delegation
* nfs4_inode_return_delegation_on_close - asynchronously return a delegation
* @inode: inode to process
*
* This routine is called on file close in order to determine if the
@ -811,7 +822,7 @@ void nfs_expire_all_delegations(struct nfs_client *clp)
}
/**
* nfs_super_return_all_delegations - return delegations for one superblock
* nfs_server_return_all_delegations - return delegations for one superblock
* @server: pointer to nfs_server to process
*
*/

3
fs/nfs/delegation.h
View file

@ -84,8 +84,7 @@ int nfs4_inode_make_writeable(struct inode *inode);
static inline int nfs_have_delegated_attributes(struct inode *inode)
{
return NFS_PROTO(inode)->have_delegation(inode, FMODE_READ) &&
!(NFS_I(inode)->cache_validity & NFS_INO_REVAL_FORCED);
return NFS_PROTO(inode)->have_delegation(inode, FMODE_READ);
}
#endif

29
fs/nfs/dir.c
View file

@ -866,6 +866,8 @@ static int nfs_readdir_xdr_to_array(struct nfs_readdir_descriptor *desc,
break;
}
verf_arg = verf_res;
status = nfs_readdir_page_filler(desc, entry, pages, pglen,
arrays, narrays);
} while (!status && nfs_readdir_page_needs_filling(page));
@ -927,7 +929,12 @@ static int find_and_lock_cache_page(struct nfs_readdir_descriptor *desc)
}
return res;
}
memcpy(nfsi->cookieverf, verf, sizeof(nfsi->cookieverf));
/*
* Set the cookie verifier if the page cache was empty
*/
if (desc->page_index == 0)
memcpy(nfsi->cookieverf, verf,
sizeof(nfsi->cookieverf));
}
res = nfs_readdir_search_array(desc);
if (res == 0) {
@ -974,10 +981,10 @@ static int readdir_search_pagecache(struct nfs_readdir_descriptor *desc)
/*
* Once we've found the start of the dirent within a page: fill 'er up...
*/
static void nfs_do_filldir(struct nfs_readdir_descriptor *desc)
static void nfs_do_filldir(struct nfs_readdir_descriptor *desc,
const __be32 *verf)
{
struct file *file = desc->file;
struct nfs_inode *nfsi = NFS_I(file_inode(file));
struct nfs_cache_array *array;
unsigned int i = 0;
@ -991,7 +998,7 @@ static void nfs_do_filldir(struct nfs_readdir_descriptor *desc)
desc->eof = true;
break;
}
memcpy(desc->verf, nfsi->cookieverf, sizeof(desc->verf));
memcpy(desc->verf, verf, sizeof(desc->verf));
if (i < (array->size-1))
desc->dir_cookie = array->array[i+1].cookie;
else
@ -1048,7 +1055,7 @@ static int uncached_readdir(struct nfs_readdir_descriptor *desc)
for (i = 0; !desc->eof && i < sz && arrays[i]; i++) {
desc->page = arrays[i];
nfs_do_filldir(desc);
nfs_do_filldir(desc, verf);
}
desc->page = NULL;
@ -1069,6 +1076,7 @@ static int nfs_readdir(struct file *file, struct dir_context *ctx)
{
struct dentry *dentry = file_dentry(file);
struct inode *inode = d_inode(dentry);
struct nfs_inode *nfsi = NFS_I(inode);
struct nfs_open_dir_context *dir_ctx = file->private_data;
struct nfs_readdir_descriptor *desc;
int res;
@ -1122,7 +1130,7 @@ static int nfs_readdir(struct file *file, struct dir_context *ctx)
break;
}
if (res == -ETOOSMALL && desc->plus) {
clear_bit(NFS_INO_ADVISE_RDPLUS, &NFS_I(inode)->flags);
clear_bit(NFS_INO_ADVISE_RDPLUS, &nfsi->flags);
nfs_zap_caches(inode);
desc->page_index = 0;
desc->plus = false;
@ -1132,7 +1140,7 @@ static int nfs_readdir(struct file *file, struct dir_context *ctx)
if (res < 0)
break;
nfs_do_filldir(desc);
nfs_do_filldir(desc, nfsi->cookieverf);
nfs_readdir_page_unlock_and_put_cached(desc);
} while (!desc->eof);
@ -1703,7 +1711,7 @@ static void nfs_drop_nlink(struct inode *inode)
NFS_I(inode)->attr_gencount = nfs_inc_attr_generation_counter();
nfs_set_cache_invalid(
inode, NFS_INO_INVALID_CHANGE | NFS_INO_INVALID_CTIME |
NFS_INO_INVALID_OTHER | NFS_INO_REVAL_FORCED);
NFS_INO_INVALID_NLINK);
spin_unlock(&inode->i_lock);
}
@ -2940,7 +2948,7 @@ static int nfs_execute_ok(struct inode *inode, int mask)
if (S_ISDIR(inode->i_mode))
return 0;
if (nfs_check_cache_invalid(inode, NFS_INO_INVALID_OTHER)) {
if (nfs_check_cache_invalid(inode, NFS_INO_INVALID_MODE)) {
if (mask & MAY_NOT_BLOCK)
return -ECHILD;
ret = __nfs_revalidate_inode(server, inode);
@ -2998,7 +3006,8 @@ int nfs_permission(struct user_namespace *mnt_userns,
if (mask & MAY_NOT_BLOCK)
return -ECHILD;
res = nfs_revalidate_inode(NFS_SERVER(inode), inode);
res = nfs_revalidate_inode(inode, NFS_INO_INVALID_MODE |
NFS_INO_INVALID_OTHER);
if (res == 0)
res = generic_permission(&init_user_ns, inode, mask);
goto out;

15
fs/nfs/export.c
View file

@ -169,19 +169,8 @@ nfs_get_parent(struct dentry *dentry)
static u64 nfs_fetch_iversion(struct inode *inode)
{
struct nfs_server *server = NFS_SERVER(inode);
/* Is this the right call?: */
nfs_revalidate_inode(server, inode);
/*
* Also, note we're ignoring any returned error. That seems to be
* the practice for cache consistency information elsewhere in
* the server, but I'm not sure why.
*/
if (server->nfs_client->rpc_ops->version >= 4)
return inode_peek_iversion_raw(inode);
else
return time_to_chattr(&inode->i_ctime);
nfs_revalidate_inode(inode, NFS_INO_INVALID_CHANGE);
return inode_peek_iversion_raw(inode);
}
const struct export_operations nfs_export_ops = {

2
fs/nfs/file.c
View file

@ -105,7 +105,7 @@ static int nfs_revalidate_file_size(struct inode *inode, struct file *filp)
if (filp->f_flags & O_DIRECT)
goto force_reval;
if (nfs_check_cache_invalid(inode, NFS_INO_REVAL_PAGECACHE))
if (nfs_check_cache_invalid(inode, NFS_INO_INVALID_SIZE))
goto force_reval;
return 0;
force_reval:

2
fs/nfs/flexfilelayout/flexfilelayout.c
View file

@ -106,7 +106,7 @@ static int decode_nfs_fh(struct xdr_stream *xdr, struct nfs_fh *fh)
if (unlikely(!p))
return -ENOBUFS;
fh->size = be32_to_cpup(p++);
if (fh->size > sizeof(struct nfs_fh)) {
if (fh->size > NFS_MAXFHSIZE) {
printk(KERN_ERR "NFS flexfiles: Too big fh received %d\n",
fh->size);
return -EOVERFLOW;

66
fs/nfs/fs_context.c
View file

@ -283,20 +283,40 @@ static int nfs_verify_server_address(struct sockaddr *addr)
return 0;
}
#ifdef CONFIG_NFS_DISABLE_UDP_SUPPORT
static bool nfs_server_transport_udp_invalid(const struct nfs_fs_context *ctx)
{
return true;
}
#else
static bool nfs_server_transport_udp_invalid(const struct nfs_fs_context *ctx)
{
if (ctx->version == 4)
return true;
return false;
}
#endif
/*
* Sanity check the NFS transport protocol.
*
*/
static void nfs_validate_transport_protocol(struct nfs_fs_context *ctx)
static int nfs_validate_transport_protocol(struct fs_context *fc,
struct nfs_fs_context *ctx)
{
switch (ctx->nfs_server.protocol) {
case XPRT_TRANSPORT_UDP:
if (nfs_server_transport_udp_invalid(ctx))
goto out_invalid_transport_udp;
break;
case XPRT_TRANSPORT_TCP:
case XPRT_TRANSPORT_RDMA:
break;
default:
ctx->nfs_server.protocol = XPRT_TRANSPORT_TCP;
}
return 0;
out_invalid_transport_udp:
return nfs_invalf(fc, "NFS: Unsupported transport protocol udp");
}
/*
@ -305,8 +325,6 @@ static void nfs_validate_transport_protocol(struct nfs_fs_context *ctx)
*/
static void nfs_set_mount_transport_protocol(struct nfs_fs_context *ctx)
{
nfs_validate_transport_protocol(ctx);
if (ctx->mount_server.protocol == XPRT_TRANSPORT_UDP ||
ctx->mount_server.protocol == XPRT_TRANSPORT_TCP)
return;
@ -932,6 +950,7 @@ static int nfs23_parse_monolithic(struct fs_context *fc,
struct nfs_fh *mntfh = ctx->mntfh;
struct sockaddr *sap = (struct sockaddr *)&ctx->nfs_server.address;
int extra_flags = NFS_MOUNT_LEGACY_INTERFACE;
int ret;
if (data == NULL)
goto out_no_data;
@ -976,6 +995,15 @@ static int nfs23_parse_monolithic(struct fs_context *fc,
memset(mntfh->data + mntfh->size, 0,
sizeof(mntfh->data) - mntfh->size);
/*
* for proto == XPRT_TRANSPORT_UDP, which is what uses
* to_exponential, implying shift: limit the shift value
* to BITS_PER_LONG (majortimeo is unsigned long)
*/
if (!(data->flags & NFS_MOUNT_TCP)) /* this will be UDP */
if (data->retrans >= 64) /* shift value is too large */
goto out_invalid_data;
/*
* Translate to nfs_fs_context, which nfs_fill_super
* can deal with.
@ -1048,6 +1076,10 @@ static int nfs23_parse_monolithic(struct fs_context *fc,
goto generic;
}
ret = nfs_validate_transport_protocol(fc, ctx);
if (ret)
return ret;
ctx->skip_reconfig_option_check = true;
return 0;
@ -1076,6 +1108,9 @@ static int nfs23_parse_monolithic(struct fs_context *fc,
out_invalid_fh:
return nfs_invalf(fc, "NFS: invalid root filehandle");
out_invalid_data:
return nfs_invalf(fc, "NFS: invalid binary mount data");
}
#if IS_ENABLED(CONFIG_NFS_V4)
@ -1146,6 +1181,7 @@ static int nfs4_parse_monolithic(struct fs_context *fc,
{
struct nfs_fs_context *ctx = nfs_fc2context(fc);
struct sockaddr *sap = (struct sockaddr *)&ctx->nfs_server.address;
int ret;
char *c;
if (!data) {
@ -1218,9 +1254,9 @@ static int nfs4_parse_monolithic(struct fs_context *fc,
ctx->acdirmin = data->acdirmin;
ctx->acdirmax = data->acdirmax;
ctx->nfs_server.protocol = data->proto;
nfs_validate_transport_protocol(ctx);
if (ctx->nfs_server.protocol == XPRT_TRANSPORT_UDP)
goto out_invalid_transport_udp;
ret = nfs_validate_transport_protocol(fc, ctx);
if (ret)
return ret;
done:
ctx->skip_reconfig_option_check = true;
return 0;
@ -1231,9 +1267,6 @@ static int nfs4_parse_monolithic(struct fs_context *fc,
out_no_address:
return nfs_invalf(fc, "NFS4: mount program didn't pass remote address");
out_invalid_transport_udp:
return nfs_invalf(fc, "NFS: Unsupported transport protocol udp");
}
#endif
@ -1298,6 +1331,10 @@ static int nfs_fs_context_validate(struct fs_context *fc)
if (!nfs_verify_server_address(sap))
goto out_no_address;
ret = nfs_validate_transport_protocol(fc, ctx);
if (ret)
return ret;
if (ctx->version == 4) {
if (IS_ENABLED(CONFIG_NFS_V4)) {
if (ctx->nfs_server.protocol == XPRT_TRANSPORT_RDMA)
@ -1306,9 +1343,6 @@ static int nfs_fs_context_validate(struct fs_context *fc)
port = NFS_PORT;
max_namelen = NFS4_MAXNAMLEN;
max_pathlen = NFS4_MAXPATHLEN;
nfs_validate_transport_protocol(ctx);
if (ctx->nfs_server.protocol == XPRT_TRANSPORT_UDP)
goto out_invalid_transport_udp;
ctx->flags &= ~(NFS_MOUNT_NONLM | NFS_MOUNT_NOACL |
NFS_MOUNT_VER3 | NFS_MOUNT_LOCAL_FLOCK |
NFS_MOUNT_LOCAL_FCNTL);
@ -1317,10 +1351,6 @@ static int nfs_fs_context_validate(struct fs_context *fc)
}
} else {
nfs_set_mount_transport_protocol(ctx);
#ifdef CONFIG_NFS_DISABLE_UDP_SUPPORT
if (ctx->nfs_server.protocol == XPRT_TRANSPORT_UDP)
goto out_invalid_transport_udp;
#endif
if (ctx->nfs_server.protocol == XPRT_TRANSPORT_RDMA)
port = NFS_RDMA_PORT;
}
@ -1354,8 +1384,6 @@ static int nfs_fs_context_validate(struct fs_context *fc)
out_v4_not_compiled:
nfs_errorf(fc, "NFS: NFSv4 is not compiled into kernel");
return -EPROTONOSUPPORT;
out_invalid_transport_udp:
return nfs_invalf(fc, "NFS: Unsupported transport protocol udp");
out_no_address:
return nfs_invalf(fc, "NFS: mount program didn't pass remote address");
out_mountproto_mismatch:

428
fs/nfs/inode.c
View file

@ -164,34 +164,19 @@ static int nfs_attribute_timeout(struct inode *inode)
return !time_in_range_open(jiffies, nfsi->read_cache_jiffies, nfsi->read_cache_jiffies + nfsi->attrtimeo);
}
static bool nfs_check_cache_invalid_delegated(struct inode *inode, unsigned long flags)
static bool nfs_check_cache_flags_invalid(struct inode *inode,
unsigned long flags)
{
unsigned long cache_validity = READ_ONCE(NFS_I(inode)->cache_validity);
/* Special case for the pagecache or access cache */
if (flags == NFS_INO_REVAL_PAGECACHE &&
!(cache_validity & NFS_INO_REVAL_FORCED))
return false;
return (cache_validity & flags) != 0;
}
static bool nfs_check_cache_invalid_not_delegated(struct inode *inode, unsigned long flags)
{
unsigned long cache_validity = READ_ONCE(NFS_I(inode)->cache_validity);
if ((cache_validity & flags) != 0)
return true;
if (nfs_attribute_timeout(inode))
return true;
return false;
}
bool nfs_check_cache_invalid(struct inode *inode, unsigned long flags)
{
if (NFS_PROTO(inode)->have_delegation(inode, FMODE_READ))
return nfs_check_cache_invalid_delegated(inode, flags);
return nfs_check_cache_invalid_not_delegated(inode, flags);
if (nfs_check_cache_flags_invalid(inode, flags))
return true;
return nfs_attribute_cache_expired(inode);
}
EXPORT_SYMBOL_GPL(nfs_check_cache_invalid);
@ -214,20 +199,21 @@ void nfs_set_cache_invalid(struct inode *inode, unsigned long flags)
if (have_delegation) {
if (!(flags & NFS_INO_REVAL_FORCED))
flags &= ~NFS_INO_INVALID_OTHER;
flags &= ~(NFS_INO_INVALID_CHANGE
| NFS_INO_INVALID_SIZE
| NFS_INO_REVAL_PAGECACHE
| NFS_INO_INVALID_XATTR);
}
flags &= ~(NFS_INO_INVALID_MODE |
NFS_INO_INVALID_OTHER |
NFS_INO_INVALID_XATTR);
flags &= ~(NFS_INO_INVALID_CHANGE | NFS_INO_INVALID_SIZE);
} else if (flags & NFS_INO_REVAL_PAGECACHE)
flags |= NFS_INO_INVALID_CHANGE | NFS_INO_INVALID_SIZE;
if (!nfs_has_xattr_cache(nfsi))
flags &= ~NFS_INO_INVALID_XATTR;
if (inode->i_mapping->nrpages == 0)
flags &= ~(NFS_INO_INVALID_DATA|NFS_INO_DATA_INVAL_DEFER);
nfsi->cache_validity |= flags;
if (flags & NFS_INO_INVALID_DATA)
nfs_fscache_invalidate(inode);
if (inode->i_mapping->nrpages == 0)
flags &= ~(NFS_INO_INVALID_DATA|NFS_INO_DATA_INVAL_DEFER);
flags &= ~(NFS_INO_REVAL_PAGECACHE | NFS_INO_REVAL_FORCED);
nfsi->cache_validity |= flags;
}
EXPORT_SYMBOL_GPL(nfs_set_cache_invalid);
@ -452,6 +438,7 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr, st
.fattr = fattr
};
struct inode *inode = ERR_PTR(-ENOENT);
u64 fattr_supported = NFS_SB(sb)->fattr_valid;
unsigned long hash;
nfs_attr_check_mountpoint(sb, fattr);
@ -484,8 +471,8 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr, st
inode->i_mode = fattr->mode;
nfsi->cache_validity = 0;
if ((fattr->valid & NFS_ATTR_FATTR_MODE) == 0
&& nfs_server_capable(inode, NFS_CAP_MODE))
nfs_set_cache_invalid(inode, NFS_INO_INVALID_OTHER);
&& (fattr_supported & NFS_ATTR_FATTR_MODE))
nfs_set_cache_invalid(inode, NFS_INO_INVALID_MODE);
/* Why so? Because we want revalidate for devices/FIFOs, and
* that's precisely what we have in nfs_file_inode_operations.
*/
@ -530,15 +517,15 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr, st
nfsi->attr_gencount = fattr->gencount;
if (fattr->valid & NFS_ATTR_FATTR_ATIME)
inode->i_atime = fattr->atime;
else if (nfs_server_capable(inode, NFS_CAP_ATIME))
else if (fattr_supported & NFS_ATTR_FATTR_ATIME)
nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATIME);
if (fattr->valid & NFS_ATTR_FATTR_MTIME)
inode->i_mtime = fattr->mtime;
else if (nfs_server_capable(inode, NFS_CAP_MTIME))
else if (fattr_supported & NFS_ATTR_FATTR_MTIME)
nfs_set_cache_invalid(inode, NFS_INO_INVALID_MTIME);
if (fattr->valid & NFS_ATTR_FATTR_CTIME)
inode->i_ctime = fattr->ctime;
else if (nfs_server_capable(inode, NFS_CAP_CTIME))
else if (fattr_supported & NFS_ATTR_FATTR_CTIME)
nfs_set_cache_invalid(inode, NFS_INO_INVALID_CTIME);
if (fattr->valid & NFS_ATTR_FATTR_CHANGE)
inode_set_iversion_raw(inode, fattr->change_attr);
@ -550,29 +537,31 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr, st
nfs_set_cache_invalid(inode, NFS_INO_INVALID_SIZE);
if (fattr->valid & NFS_ATTR_FATTR_NLINK)
set_nlink(inode, fattr->nlink);
else if (nfs_server_capable(inode, NFS_CAP_NLINK))
nfs_set_cache_invalid(inode, NFS_INO_INVALID_OTHER);
else if (fattr_supported & NFS_ATTR_FATTR_NLINK)
nfs_set_cache_invalid(inode, NFS_INO_INVALID_NLINK);
if (fattr->valid & NFS_ATTR_FATTR_OWNER)
inode->i_uid = fattr->uid;
else if (nfs_server_capable(inode, NFS_CAP_OWNER))
else if (fattr_supported & NFS_ATTR_FATTR_OWNER)
nfs_set_cache_invalid(inode, NFS_INO_INVALID_OTHER);
if (fattr->valid & NFS_ATTR_FATTR_GROUP)
inode->i_gid = fattr->gid;
else if (nfs_server_capable(inode, NFS_CAP_OWNER_GROUP))
else if (fattr_supported & NFS_ATTR_FATTR_GROUP)
nfs_set_cache_invalid(inode, NFS_INO_INVALID_OTHER);
if (nfs_server_capable(inode, NFS_CAP_XATTR))
nfs_set_cache_invalid(inode, NFS_INO_INVALID_XATTR);
if (fattr->valid & NFS_ATTR_FATTR_BLOCKS_USED)
inode->i_blocks = fattr->du.nfs2.blocks;
else if (fattr_supported & NFS_ATTR_FATTR_BLOCKS_USED &&
fattr->size != 0)
nfs_set_cache_invalid(inode, NFS_INO_INVALID_BLOCKS);
if (fattr->valid & NFS_ATTR_FATTR_SPACE_USED) {
/*
* report the blocks in 512byte units
*/
inode->i_blocks = nfs_calc_block_size(fattr->du.nfs3.used);
}
if (nfsi->cache_validity != 0)
nfsi->cache_validity |= NFS_INO_REVAL_FORCED;
} else if (fattr_supported & NFS_ATTR_FATTR_SPACE_USED &&
fattr->size != 0)
nfs_set_cache_invalid(inode, NFS_INO_INVALID_BLOCKS);
nfs_setsecurity(inode, fattr, label);
@ -634,8 +623,7 @@ nfs_setattr(struct user_namespace *mnt_userns, struct dentry *dentry,
}
/* Optimization: if the end result is no change, don't RPC */
attr->ia_valid &= NFS_VALID_ATTRS;
if ((attr->ia_valid & ~(ATTR_FILE|ATTR_OPEN)) == 0)
if (((attr->ia_valid & NFS_VALID_ATTRS) & ~(ATTR_FILE|ATTR_OPEN)) == 0)
return 0;
trace_nfs_setattr_enter(inode);
@ -710,12 +698,20 @@ void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr,
spin_lock(&inode->i_lock);
NFS_I(inode)->attr_gencount = fattr->gencount;
if ((attr->ia_valid & ATTR_SIZE) != 0) {
nfs_set_cache_invalid(inode, NFS_INO_INVALID_MTIME);
nfs_set_cache_invalid(inode, NFS_INO_INVALID_MTIME |
NFS_INO_INVALID_BLOCKS);
nfs_inc_stats(inode, NFSIOS_SETATTRTRUNC);
nfs_vmtruncate(inode, attr->ia_size);
}
if ((attr->ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID)) != 0) {
NFS_I(inode)->cache_validity &= ~NFS_INO_INVALID_CTIME;
if ((attr->ia_valid & ATTR_KILL_SUID) != 0 &&
inode->i_mode & S_ISUID)
inode->i_mode &= ~S_ISUID;
if ((attr->ia_valid & ATTR_KILL_SGID) != 0 &&
(inode->i_mode & (S_ISGID | S_IXGRP)) ==
(S_ISGID | S_IXGRP))
inode->i_mode &= ~S_ISGID;
if ((attr->ia_valid & ATTR_MODE) != 0) {
int mode = attr->ia_mode & S_IALLUGO;
mode |= inode->i_mode & ~S_IALLUGO;
@ -793,14 +789,28 @@ static void nfs_readdirplus_parent_cache_hit(struct dentry *dentry)
dput(parent);
}
static bool nfs_need_revalidate_inode(struct inode *inode)
static u32 nfs_get_valid_attrmask(struct inode *inode)
{
if (NFS_I(inode)->cache_validity &
(NFS_INO_INVALID_ATTR|NFS_INO_INVALID_LABEL))
return true;
if (nfs_attribute_cache_expired(inode))
return true;
return false;
unsigned long cache_validity = READ_ONCE(NFS_I(inode)->cache_validity);
u32 reply_mask = STATX_INO | STATX_TYPE;
if (!(cache_validity & NFS_INO_INVALID_ATIME))
reply_mask |= STATX_ATIME;
if (!(cache_validity & NFS_INO_INVALID_CTIME))
reply_mask |= STATX_CTIME;
if (!(cache_validity & NFS_INO_INVALID_MTIME))
reply_mask |= STATX_MTIME;
if (!(cache_validity & NFS_INO_INVALID_SIZE))
reply_mask |= STATX_SIZE;
if (!(cache_validity & NFS_INO_INVALID_NLINK))
reply_mask |= STATX_NLINK;
if (!(cache_validity & NFS_INO_INVALID_MODE))
reply_mask |= STATX_MODE;
if (!(cache_validity & NFS_INO_INVALID_OTHER))
reply_mask |= STATX_UID | STATX_GID;
if (!(cache_validity & NFS_INO_INVALID_BLOCKS))
reply_mask |= STATX_BLOCKS;
return reply_mask;
}
int nfs_getattr(struct user_namespace *mnt_userns, const struct path *path,
@ -815,9 +825,13 @@ int nfs_getattr(struct user_namespace *mnt_userns, const struct path *path,
trace_nfs_getattr_enter(inode);
request_mask &= STATX_TYPE | STATX_MODE | STATX_NLINK | STATX_UID |
STATX_GID | STATX_ATIME | STATX_MTIME | STATX_CTIME |
STATX_INO | STATX_SIZE | STATX_BLOCKS;
if ((query_flags & AT_STATX_DONT_SYNC) && !force_sync) {
nfs_readdirplus_parent_cache_hit(path->dentry);
goto out_no_update;
goto out_no_revalidate;
}
/* Flush out writes to the server in order to update c/mtime. */
@ -850,14 +864,24 @@ int nfs_getattr(struct user_namespace *mnt_userns, const struct path *path,
/* Check whether the cached attributes are stale */
do_update |= force_sync || nfs_attribute_cache_expired(inode);
cache_validity = READ_ONCE(NFS_I(inode)->cache_validity);
do_update |= cache_validity &
(NFS_INO_INVALID_ATTR|NFS_INO_INVALID_LABEL);
do_update |= cache_validity & NFS_INO_INVALID_CHANGE;
if (request_mask & STATX_ATIME)
do_update |= cache_validity & NFS_INO_INVALID_ATIME;
if (request_mask & (STATX_CTIME|STATX_MTIME))
do_update |= cache_validity & NFS_INO_REVAL_PAGECACHE;
if (request_mask & STATX_CTIME)
do_update |= cache_validity & NFS_INO_INVALID_CTIME;
if (request_mask & STATX_MTIME)
do_update |= cache_validity & NFS_INO_INVALID_MTIME;
if (request_mask & STATX_SIZE)
do_update |= cache_validity & NFS_INO_INVALID_SIZE;
if (request_mask & STATX_NLINK)
do_update |= cache_validity & NFS_INO_INVALID_NLINK;
if (request_mask & STATX_MODE)
do_update |= cache_validity & NFS_INO_INVALID_MODE;
if (request_mask & (STATX_UID | STATX_GID))
do_update |= cache_validity & NFS_INO_INVALID_OTHER;
if (request_mask & STATX_BLOCKS)
do_update |= cache_validity & NFS_INO_INVALID_BLOCKS;
if (do_update) {
/* Update the attribute cache */
if (!(server->flags & NFS_MOUNT_NOAC))
@ -871,8 +895,8 @@ int nfs_getattr(struct user_namespace *mnt_userns, const struct path *path,
nfs_readdirplus_parent_cache_hit(path->dentry);
out_no_revalidate:
/* Only return attributes that were revalidated. */
stat->result_mask &= request_mask;
out_no_update:
stat->result_mask = nfs_get_valid_attrmask(inode) | request_mask;
generic_fillattr(&init_user_ns, inode, stat);
stat->ino = nfs_compat_user_ino64(NFS_FILEID(inode));
if (S_ISDIR(inode->i_mode))
@ -963,7 +987,6 @@ void nfs_close_context(struct nfs_open_context *ctx, int is_sync)
{
struct nfs_inode *nfsi;
struct inode *inode;
struct nfs_server *server;
if (!(ctx->mode & FMODE_WRITE))
return;
@ -979,10 +1002,10 @@ void nfs_close_context(struct nfs_open_context *ctx, int is_sync)
return;
if (!list_empty(&nfsi->open_files))
return;
server = NFS_SERVER(inode);
if (server->flags & NFS_MOUNT_NOCTO)
if (NFS_SERVER(inode)->flags & NFS_MOUNT_NOCTO)
return;
nfs_revalidate_inode(server, inode);
nfs_revalidate_inode(inode,
NFS_INO_INVALID_CHANGE | NFS_INO_INVALID_SIZE);
}
EXPORT_SYMBOL_GPL(nfs_close_context);
@ -1237,16 +1260,16 @@ int nfs_attribute_cache_expired(struct inode *inode)
/**
* nfs_revalidate_inode - Revalidate the inode attributes
* @server: pointer to nfs_server struct
* @inode: pointer to inode struct
* @flags: cache flags to check
*
* Updates inode attribute information by retrieving the data from the server.
*/
int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
int nfs_revalidate_inode(struct inode *inode, unsigned long flags)
{
if (!nfs_need_revalidate_inode(inode))
if (!nfs_check_cache_invalid(inode, flags))
return NFS_STALE(inode) ? -ESTALE : 0;
return __nfs_revalidate_inode(server, inode);
return __nfs_revalidate_inode(NFS_SERVER(inode), inode);
}
EXPORT_SYMBOL_GPL(nfs_revalidate_inode);
@ -1332,7 +1355,7 @@ int nfs_clear_invalid_mapping(struct address_space *mapping)
bool nfs_mapping_need_revalidate_inode(struct inode *inode)
{
return nfs_check_cache_invalid(inode, NFS_INO_REVAL_PAGECACHE) ||
return nfs_check_cache_invalid(inode, NFS_INO_INVALID_CHANGE) ||
NFS_STALE(inode);
}
@ -1468,8 +1491,7 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat
if (!nfs_file_has_buffered_writers(nfsi)) {
/* Verify a few of the more important attributes */
if ((fattr->valid & NFS_ATTR_FATTR_CHANGE) != 0 && !inode_eq_iversion_raw(inode, fattr->change_attr))
invalid |= NFS_INO_INVALID_CHANGE
| NFS_INO_REVAL_PAGECACHE;
invalid |= NFS_INO_INVALID_CHANGE;
ts = inode->i_mtime;
if ((fattr->valid & NFS_ATTR_FATTR_MTIME) && !timespec64_equal(&ts, &fattr->mtime))
@ -1483,28 +1505,21 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat
cur_size = i_size_read(inode);
new_isize = nfs_size_to_loff_t(fattr->size);
if (cur_size != new_isize)
invalid |= NFS_INO_INVALID_SIZE
| NFS_INO_REVAL_PAGECACHE;
invalid |= NFS_INO_INVALID_SIZE;
}
}
/* Have any file permissions changed? */
if ((fattr->valid & NFS_ATTR_FATTR_MODE) && (inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO))
invalid |= NFS_INO_INVALID_ACCESS
| NFS_INO_INVALID_ACL
| NFS_INO_INVALID_OTHER;
invalid |= NFS_INO_INVALID_MODE;
if ((fattr->valid & NFS_ATTR_FATTR_OWNER) && !uid_eq(inode->i_uid, fattr->uid))
invalid |= NFS_INO_INVALID_ACCESS
| NFS_INO_INVALID_ACL
| NFS_INO_INVALID_OTHER;
invalid |= NFS_INO_INVALID_OTHER;
if ((fattr->valid & NFS_ATTR_FATTR_GROUP) && !gid_eq(inode->i_gid, fattr->gid))
invalid |= NFS_INO_INVALID_ACCESS
| NFS_INO_INVALID_ACL
| NFS_INO_INVALID_OTHER;
invalid |= NFS_INO_INVALID_OTHER;
/* Has the link count changed? */
if ((fattr->valid & NFS_ATTR_FATTR_NLINK) && inode->i_nlink != fattr->nlink)
invalid |= NFS_INO_INVALID_OTHER;
invalid |= NFS_INO_INVALID_NLINK;
ts = inode->i_atime;
if ((fattr->valid & NFS_ATTR_FATTR_ATIME) && !timespec64_equal(&ts, &fattr->atime))
@ -1642,41 +1657,142 @@ EXPORT_SYMBOL_GPL(_nfs_display_fhandle);
#endif
/**
* nfs_inode_attrs_need_update - check if the inode attributes need updating
* @inode: pointer to inode
* nfs_inode_attrs_cmp_generic - compare attributes
* @fattr: attributes
* @inode: pointer to inode
*
* Attempt to divine whether or not an RPC call reply carrying stale
* attributes got scheduled after another call carrying updated ones.
* Note also the check for wraparound of 'attr_gencount'
*
* The function returns '1' if it thinks the attributes in @fattr are
* more recent than the ones cached in @inode. Otherwise it returns
* the value '0'.
*/
static int nfs_inode_attrs_cmp_generic(const struct nfs_fattr *fattr,
const struct inode *inode)
{
unsigned long attr_gencount = NFS_I(inode)->attr_gencount;
return (long)(fattr->gencount - attr_gencount) > 0 ||
(long)(attr_gencount - nfs_read_attr_generation_counter()) > 0;
}
/**
* nfs_inode_attrs_cmp_monotonic - compare attributes
* @fattr: attributes
* @inode: pointer to inode
*
* Attempt to divine whether or not an RPC call reply carrying stale
* attributes got scheduled after another call carrying updated ones.
*
* To do so, the function first assumes that a more recent ctime means
* that the attributes in fattr are newer, however it also attempt to
* catch the case where ctime either didn't change, or went backwards
* (if someone reset the clock on the server) by looking at whether
* or not this RPC call was started after the inode was last updated.
* Note also the check for wraparound of 'attr_gencount'
*
* The function returns 'true' if it thinks the attributes in 'fattr' are
* more recent than the ones cached in the inode.
*
* We assume that the server observes monotonic semantics for
* the change attribute, so a larger value means that the attributes in
* @fattr are more recent, in which case the function returns the
* value '1'.
* A return value of '0' indicates no measurable change
* A return value of '-1' means that the attributes in @inode are
* more recent.
*/
static int nfs_inode_attrs_need_update(const struct inode *inode, const struct nfs_fattr *fattr)
static int nfs_inode_attrs_cmp_monotonic(const struct nfs_fattr *fattr,
const struct inode *inode)
{
const struct nfs_inode *nfsi = NFS_I(inode);
return ((long)fattr->gencount - (long)nfsi->attr_gencount) > 0 ||
((long)nfsi->attr_gencount - (long)nfs_read_attr_generation_counter() > 0);
s64 diff = fattr->change_attr - inode_peek_iversion_raw(inode);
if (diff > 0)
return 1;
return diff == 0 ? 0 : -1;
}
static int nfs_refresh_inode_locked(struct inode *inode, struct nfs_fattr *fattr)
/**
* nfs_inode_attrs_cmp_strict_monotonic - compare attributes
* @fattr: attributes
* @inode: pointer to inode
*
* Attempt to divine whether or not an RPC call reply carrying stale
* attributes got scheduled after another call carrying updated ones.
*
* We assume that the server observes strictly monotonic semantics for
* the change attribute, so a larger value means that the attributes in
* @fattr are more recent, in which case the function returns the
* value '1'.
* A return value of '-1' means that the attributes in @inode are
* more recent or unchanged.
*/
static int nfs_inode_attrs_cmp_strict_monotonic(const struct nfs_fattr *fattr,
const struct inode *inode)
{
int ret;
return nfs_inode_attrs_cmp_monotonic(fattr, inode) > 0 ? 1 : -1;
}
/**
* nfs_inode_attrs_cmp - compare attributes
* @fattr: attributes
* @inode: pointer to inode
*
* This function returns '1' if it thinks the attributes in @fattr are
* more recent than the ones cached in @inode. It returns '-1' if
* the attributes in @inode are more recent than the ones in @fattr,
* and it returns 0 if not sure.
*/
static int nfs_inode_attrs_cmp(const struct nfs_fattr *fattr,
const struct inode *inode)
{
if (nfs_inode_attrs_cmp_generic(fattr, inode) > 0)
return 1;
switch (NFS_SERVER(inode)->change_attr_type) {
case NFS4_CHANGE_TYPE_IS_UNDEFINED:
break;
case NFS4_CHANGE_TYPE_IS_TIME_METADATA:
if (!(fattr->valid & NFS_ATTR_FATTR_CHANGE))
break;
return nfs_inode_attrs_cmp_monotonic(fattr, inode);
default:
if (!(fattr->valid & NFS_ATTR_FATTR_CHANGE))
break;
return nfs_inode_attrs_cmp_strict_monotonic(fattr, inode);
}
return 0;
}
/**
* nfs_inode_finish_partial_attr_update - complete a previous inode update
* @fattr: attributes
* @inode: pointer to inode
*
* Returns '1' if the last attribute update left the inode cached
* attributes in a partially unrevalidated state, and @fattr
* matches the change attribute of that partial update.
* Otherwise returns '0'.
*/
static int nfs_inode_finish_partial_attr_update(const struct nfs_fattr *fattr,
const struct inode *inode)
{
const unsigned long check_valid =
NFS_INO_INVALID_ATIME | NFS_INO_INVALID_CTIME |
NFS_INO_INVALID_MTIME | NFS_INO_INVALID_SIZE |
NFS_INO_INVALID_BLOCKS | NFS_INO_INVALID_OTHER |
NFS_INO_INVALID_NLINK;
unsigned long cache_validity = NFS_I(inode)->cache_validity;
if (!(cache_validity & NFS_INO_INVALID_CHANGE) &&
(cache_validity & check_valid) != 0 &&
(fattr->valid & NFS_ATTR_FATTR_CHANGE) != 0 &&
nfs_inode_attrs_cmp_monotonic(fattr, inode) == 0)
return 1;
return 0;
}
static int nfs_refresh_inode_locked(struct inode *inode,
struct nfs_fattr *fattr)
{
int attr_cmp = nfs_inode_attrs_cmp(fattr, inode);
int ret = 0;
trace_nfs_refresh_inode_enter(inode);
if (nfs_inode_attrs_need_update(inode, fattr))
if (attr_cmp > 0 || nfs_inode_finish_partial_attr_update(fattr, inode))
ret = nfs_update_inode(inode, fattr);
else
else if (attr_cmp == 0)
ret = nfs_check_inode_attributes(inode, fattr);
trace_nfs_refresh_inode_exit(inode, ret);
@ -1761,11 +1877,13 @@ EXPORT_SYMBOL_GPL(nfs_post_op_update_inode);
*/
int nfs_post_op_update_inode_force_wcc_locked(struct inode *inode, struct nfs_fattr *fattr)
{
int attr_cmp = nfs_inode_attrs_cmp(fattr, inode);
int status;
/* Don't do a WCC update if these attributes are already stale */
if ((fattr->valid & NFS_ATTR_FATTR) == 0 ||
!nfs_inode_attrs_need_update(inode, fattr)) {
if (attr_cmp < 0)
return 0;
if ((fattr->valid & NFS_ATTR_FATTR) == 0 || !attr_cmp) {
fattr->valid &= ~(NFS_ATTR_FATTR_PRECHANGE
| NFS_ATTR_FATTR_PRESIZE
| NFS_ATTR_FATTR_PREMTIME
@ -1839,9 +1957,10 @@ EXPORT_SYMBOL_GPL(nfs_post_op_update_inode_force_wcc);
*/
static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
{
struct nfs_server *server;
struct nfs_server *server = NFS_SERVER(inode);
struct nfs_inode *nfsi = NFS_I(inode);
loff_t cur_isize, new_isize;
u64 fattr_supported = server->fattr_valid;
unsigned long invalid = 0;
unsigned long now = jiffies;
unsigned long save_cache_validity;
@ -1885,7 +2004,6 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
goto out_err;
}
server = NFS_SERVER(inode);
/* Update the fsid? */
if (S_ISDIR(inode->i_mode) && (fattr->valid & NFS_ATTR_FATTR_FSID) &&
!nfs_fsid_equal(&server->fsid, &fattr->fsid) &&
@ -1904,14 +2022,17 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
nfsi->cache_validity &= ~(NFS_INO_INVALID_ATTR
| NFS_INO_INVALID_ATIME
| NFS_INO_REVAL_FORCED
| NFS_INO_REVAL_PAGECACHE
| NFS_INO_INVALID_BLOCKS);
/* Do atomic weak cache consistency updates */
nfs_wcc_update_inode(inode, fattr);
if (pnfs_layoutcommit_outstanding(inode)) {
nfsi->cache_validity |= save_cache_validity & NFS_INO_INVALID_ATTR;
nfsi->cache_validity |=
save_cache_validity &
(NFS_INO_INVALID_CHANGE | NFS_INO_INVALID_CTIME |
NFS_INO_INVALID_MTIME | NFS_INO_INVALID_SIZE |
NFS_INO_INVALID_BLOCKS);
cache_revalidated = false;
}
@ -1928,6 +2049,9 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
save_cache_validity |= NFS_INO_INVALID_CTIME
| NFS_INO_INVALID_MTIME
| NFS_INO_INVALID_SIZE
| NFS_INO_INVALID_BLOCKS
| NFS_INO_INVALID_NLINK
| NFS_INO_INVALID_MODE
| NFS_INO_INVALID_OTHER;
if (S_ISDIR(inode->i_mode))
nfs_force_lookup_revalidate(inode);
@ -1940,28 +2064,24 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
attr_changed = true;
}
} else {
nfsi->cache_validity |= save_cache_validity &
(NFS_INO_INVALID_CHANGE
| NFS_INO_REVAL_PAGECACHE
| NFS_INO_REVAL_FORCED);
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_CHANGE;
cache_revalidated = false;
}
if (fattr->valid & NFS_ATTR_FATTR_MTIME) {
inode->i_mtime = fattr->mtime;
} else if (server->caps & NFS_CAP_MTIME) {
nfsi->cache_validity |= save_cache_validity &
(NFS_INO_INVALID_MTIME
| NFS_INO_REVAL_FORCED);
} else if (fattr_supported & NFS_ATTR_FATTR_MTIME) {
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_MTIME;
cache_revalidated = false;
}
if (fattr->valid & NFS_ATTR_FATTR_CTIME) {
inode->i_ctime = fattr->ctime;
} else if (server->caps & NFS_CAP_CTIME) {
nfsi->cache_validity |= save_cache_validity &
(NFS_INO_INVALID_CTIME
| NFS_INO_REVAL_FORCED);
} else if (fattr_supported & NFS_ATTR_FATTR_CTIME) {
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_CTIME;
cache_revalidated = false;
}
@ -1985,21 +2105,23 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
(long long)cur_isize,
(long long)new_isize);
}
if (new_isize == 0 &&
!(fattr->valid & (NFS_ATTR_FATTR_SPACE_USED |
NFS_ATTR_FATTR_BLOCKS_USED))) {
fattr->du.nfs3.used = 0;
fattr->valid |= NFS_ATTR_FATTR_SPACE_USED;
}
} else {
nfsi->cache_validity |= save_cache_validity &
(NFS_INO_INVALID_SIZE
| NFS_INO_REVAL_PAGECACHE
| NFS_INO_REVAL_FORCED);
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_SIZE;
cache_revalidated = false;
}
if (fattr->valid & NFS_ATTR_FATTR_ATIME)
inode->i_atime = fattr->atime;
else if (server->caps & NFS_CAP_ATIME) {
nfsi->cache_validity |= save_cache_validity &
(NFS_INO_INVALID_ATIME
| NFS_INO_REVAL_FORCED);
else if (fattr_supported & NFS_ATTR_FATTR_ATIME) {
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_ATIME;
cache_revalidated = false;
}
@ -2012,10 +2134,9 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
| NFS_INO_INVALID_ACL;
attr_changed = true;
}
} else if (server->caps & NFS_CAP_MODE) {
nfsi->cache_validity |= save_cache_validity &
(NFS_INO_INVALID_OTHER
| NFS_INO_REVAL_FORCED);
} else if (fattr_supported & NFS_ATTR_FATTR_MODE) {
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_MODE;
cache_revalidated = false;
}
@ -2026,10 +2147,9 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
inode->i_uid = fattr->uid;
attr_changed = true;
}
} else if (server->caps & NFS_CAP_OWNER) {
nfsi->cache_validity |= save_cache_validity &
(NFS_INO_INVALID_OTHER
| NFS_INO_REVAL_FORCED);
} else if (fattr_supported & NFS_ATTR_FATTR_OWNER) {
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_OTHER;
cache_revalidated = false;
}
@ -2040,10 +2160,9 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
inode->i_gid = fattr->gid;
attr_changed = true;
}
} else if (server->caps & NFS_CAP_OWNER_GROUP) {
nfsi->cache_validity |= save_cache_validity &
(NFS_INO_INVALID_OTHER
| NFS_INO_REVAL_FORCED);
} else if (fattr_supported & NFS_ATTR_FATTR_GROUP) {
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_OTHER;
cache_revalidated = false;
}
@ -2054,10 +2173,9 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
set_nlink(inode, fattr->nlink);
attr_changed = true;
}
} else if (server->caps & NFS_CAP_NLINK) {
nfsi->cache_validity |= save_cache_validity &
(NFS_INO_INVALID_OTHER
| NFS_INO_REVAL_FORCED);
} else if (fattr_supported & NFS_ATTR_FATTR_NLINK) {
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_NLINK;
cache_revalidated = false;
}
@ -2066,18 +2184,22 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
* report the blocks in 512byte units
*/
inode->i_blocks = nfs_calc_block_size(fattr->du.nfs3.used);
} else if (fattr->valid & NFS_ATTR_FATTR_BLOCKS_USED)
} else if (fattr_supported & NFS_ATTR_FATTR_SPACE_USED) {
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_BLOCKS;
cache_revalidated = false;
}
if (fattr->valid & NFS_ATTR_FATTR_BLOCKS_USED) {
inode->i_blocks = fattr->du.nfs2.blocks;
else {
nfsi->cache_validity |= save_cache_validity &
(NFS_INO_INVALID_BLOCKS
| NFS_INO_REVAL_FORCED);
} else if (fattr_supported & NFS_ATTR_FATTR_BLOCKS_USED) {
nfsi->cache_validity |=
save_cache_validity & NFS_INO_INVALID_BLOCKS;
cache_revalidated = false;
}
/* Update attrtimeo value if we're out of the unstable period */
if (attr_changed) {
invalid &= ~NFS_INO_INVALID_ATTR;
nfs_inc_stats(inode, NFSIOS_ATTRINVALIDATE);
nfsi->attrtimeo = NFS_MINATTRTIMEO(inode);
nfsi->attrtimeo_timestamp = now;
@ -2094,7 +2216,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
nfsi->attrtimeo_timestamp = now;
}
/* Set the barrier to be more recent than this fattr */
if ((long)fattr->gencount - (long)nfsi->attr_gencount > 0)
if ((long)(fattr->gencount - nfsi->attr_gencount) > 0)
nfsi->attr_gencount = fattr->gencount;
}

2
fs/nfs/internal.h
View file

@ -181,7 +181,7 @@ struct nfs_mount_request {
struct net *net;
};
extern int nfs_mount(struct nfs_mount_request *info);
extern int nfs_mount(struct nfs_mount_request *info, int timeo, int retrans);
extern void nfs_umount(const struct nfs_mount_request *info);
/* client.c */

2
fs/nfs/io.c
View file

@ -104,7 +104,7 @@ static void nfs_block_buffered(struct nfs_inode *nfsi, struct inode *inode)
}
/**
* nfs_end_io_direct - declare the file is being used for direct i/o
* nfs_start_io_direct - declare the file is being used for direct i/o
* @inode: file inode
*
* Declare that a direct I/O operation is about to start, and ensure

14
fs/nfs/mount_clnt.c
View file

@ -136,14 +136,16 @@ struct mnt_fhstatus {
/**
* nfs_mount - Obtain an NFS file handle for the given host and path
* @info: pointer to mount request arguments
* @timeo: deciseconds the mount waits for a response before it retries
* @retrans: number of times the mount retries a request
*
* Uses default timeout parameters specified by underlying transport. On
* successful return, the auth_flavs list and auth_flav_len will be populated
* with the list from the server or a faked-up list if the server didn't
* provide one.
* Uses timeout parameters specified by caller. On successful return, the
* auth_flavs list and auth_flav_len will be populated with the list from the
* server or a faked-up list if the server didn't provide one.
*/
int nfs_mount(struct nfs_mount_request *info)
int nfs_mount(struct nfs_mount_request *info, int timeo, int retrans)
{
struct rpc_timeout mnt_timeout;
struct mountres result = {
.fh = info->fh,
.auth_count = info->auth_flav_len,
@ -158,6 +160,7 @@ int nfs_mount(struct nfs_mount_request *info)
.protocol = info->protocol,
.address = info->sap,
.addrsize = info->salen,
.timeout = &mnt_timeout,
.servername = info->hostname,
.program = &mnt_program,
.version = info->version,
@ -177,6 +180,7 @@ int nfs_mount(struct nfs_mount_request *info)
if (info->noresvport)
args.flags |= RPC_CLNT_CREATE_NONPRIVPORT;
nfs_init_timeout_values(&mnt_timeout, info->protocol, timeo, retrans);
mnt_clnt = rpc_create(&args);
if (IS_ERR(mnt_clnt))
goto out_clnt_err;

2
fs/nfs/nfs3acl.c
View file

@ -65,7 +65,7 @@ struct posix_acl *nfs3_get_acl(struct inode *inode, int type)
if (!nfs_server_capable(inode, NFS_CAP_ACLS))
return ERR_PTR(-EOPNOTSUPP);
status = nfs_revalidate_inode(server, inode);
status = nfs_revalidate_inode(inode, NFS_INO_INVALID_CHANGE);
if (status < 0)
return ERR_PTR(status);

5
fs/nfs/nfs3xdr.c
View file

@ -433,7 +433,7 @@ static int decode_nfs_fh3(struct xdr_stream *xdr, struct nfs_fh *fh)
if (unlikely(!p))
return -EIO;
length = be32_to_cpup(p++);
if (unlikely(length > NFS3_FHSIZE))
if (unlikely(length > NFS3_FHSIZE || length == 0))
goto out_toobig;
p = xdr_inline_decode(xdr, length);
if (unlikely(!p))
@ -442,7 +442,7 @@ static int decode_nfs_fh3(struct xdr_stream *xdr, struct nfs_fh *fh)
memcpy(fh->data, p, length);
return 0;
out_toobig:
dprintk("NFS: file handle size (%u) too big\n", length);
trace_nfs_xdr_bad_filehandle(xdr, NFSERR_BADHANDLE);
return -E2BIG;
}
@ -2227,6 +2227,7 @@ static int decode_fsinfo3resok(struct xdr_stream *xdr,
/* ignore properties */
result->lease_time = 0;
result->change_attr_type = NFS4_CHANGE_TYPE_IS_TIME_METADATA;
return 0;
}

77
fs/nfs/nfs42proc.c
View file

@ -46,11 +46,12 @@ static int _nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
{
struct inode *inode = file_inode(filep);
struct nfs_server *server = NFS_SERVER(inode);
u32 bitmask[3];
struct nfs42_falloc_args args = {
.falloc_fh = NFS_FH(inode),
.falloc_offset = offset,
.falloc_length = len,
.falloc_bitmask = nfs4_fattr_bitmap,
.falloc_bitmask = bitmask,
};
struct nfs42_falloc_res res = {
.falloc_server = server,
@ -68,6 +69,10 @@ static int _nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
return status;
}
memcpy(bitmask, server->cache_consistency_bitmask, sizeof(bitmask));
if (server->attr_bitmask[1] & FATTR4_WORD1_SPACE_USED)
bitmask[1] |= FATTR4_WORD1_SPACE_USED;
res.falloc_fattr = nfs_alloc_fattr();
if (!res.falloc_fattr)
return -ENOMEM;
@ -75,7 +80,8 @@ static int _nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
status = nfs4_call_sync(server->client, server, msg,
&args.seq_args, &res.seq_res, 0);
if (status == 0)
status = nfs_post_op_update_inode(inode, res.falloc_fattr);
status = nfs_post_op_update_inode_force_wcc(inode,
res.falloc_fattr);
kfree(res.falloc_fattr);
return status;
@ -84,7 +90,8 @@ static int _nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
static int nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
loff_t offset, loff_t len)
{
struct nfs_server *server = NFS_SERVER(file_inode(filep));
struct inode *inode = file_inode(filep);
struct nfs_server *server = NFS_SERVER(inode);
struct nfs4_exception exception = { };
struct nfs_lock_context *lock;
int err;
@ -93,9 +100,13 @@ static int nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
if (IS_ERR(lock))
return PTR_ERR(lock);
exception.inode = file_inode(filep);
exception.inode = inode;
exception.state = lock->open_context->state;
err = nfs_sync_inode(inode);
if (err)
goto out;
do {
err = _nfs42_proc_fallocate(msg, filep, lock, offset, len);
if (err == -ENOTSUPP) {
@ -104,7 +115,7 @@ static int nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
}
err = nfs4_handle_exception(server, err, &exception);
} while (exception.retry);
out:
nfs_put_lock_context(lock);
return err;
}
@ -142,16 +153,13 @@ int nfs42_proc_deallocate(struct file *filep, loff_t offset, loff_t len)
return -EOPNOTSUPP;
inode_lock(inode);
err = nfs_sync_inode(inode);
if (err)
goto out_unlock;
err = nfs42_proc_fallocate(&msg, filep, offset, len);
if (err == 0)
truncate_pagecache_range(inode, offset, (offset + len) -1);
if (err == -EOPNOTSUPP)
NFS_SERVER(inode)->caps &= ~NFS_CAP_DEALLOCATE;
out_unlock:
inode_unlock(inode);
return err;
}
@ -261,6 +269,33 @@ static int process_copy_commit(struct file *dst, loff_t pos_dst,
return status;
}
/**
* nfs42_copy_dest_done - perform inode cache updates after clone/copy offload
* @inode: pointer to destination inode
* @pos: destination offset
* @len: copy length
*
* Punch a hole in the inode page cache, so that the NFS client will
* know to retrieve new data.
* Update the file size if necessary, and then mark the inode as having
* invalid cached values for change attribute, ctime, mtime and space used.
*/
static void nfs42_copy_dest_done(struct inode *inode, loff_t pos, loff_t len)
{
loff_t newsize = pos + len;
loff_t end = newsize - 1;
truncate_pagecache_range(inode, pos, end);
spin_lock(&inode->i_lock);
if (newsize > i_size_read(inode))
i_size_write(inode, newsize);
nfs_set_cache_invalid(inode, NFS_INO_INVALID_CHANGE |
NFS_INO_INVALID_CTIME |
NFS_INO_INVALID_MTIME |
NFS_INO_INVALID_BLOCKS);
spin_unlock(&inode->i_lock);
}
static ssize_t _nfs42_proc_copy(struct file *src,
struct nfs_lock_context *src_lock,
struct file *dst,
@ -354,19 +389,8 @@ static ssize_t _nfs42_proc_copy(struct file *src,
goto out;
}
truncate_pagecache_range(dst_inode, pos_dst,
pos_dst + res->write_res.count);
spin_lock(&dst_inode->i_lock);
nfs_set_cache_invalid(
dst_inode, NFS_INO_REVAL_PAGECACHE | NFS_INO_REVAL_FORCED |
NFS_INO_INVALID_SIZE | NFS_INO_INVALID_ATTR |
NFS_INO_INVALID_DATA);
spin_unlock(&dst_inode->i_lock);
spin_lock(&src_inode->i_lock);
nfs_set_cache_invalid(src_inode, NFS_INO_REVAL_PAGECACHE |
NFS_INO_REVAL_FORCED |
NFS_INO_INVALID_ATIME);
spin_unlock(&src_inode->i_lock);
nfs42_copy_dest_done(dst_inode, pos_dst, res->write_res.count);
nfs_invalidate_atime(src_inode);
status = res->write_res.count;
out:
if (args->sync)
@ -659,7 +683,10 @@ static loff_t _nfs42_proc_llseek(struct file *filep,
if (status)
return status;
return vfs_setpos(filep, res.sr_offset, inode->i_sb->s_maxbytes);
if (whence == SEEK_DATA && res.sr_eof)
return -NFS4ERR_NXIO;
else
return vfs_setpos(filep, res.sr_offset, inode->i_sb->s_maxbytes);
}
loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence)
@ -1044,8 +1071,10 @@ static int _nfs42_proc_clone(struct rpc_message *msg, struct file *src_f,
status = nfs4_call_sync(server->client, server, msg,
&args.seq_args, &res.seq_res, 0);
if (status == 0)
if (status == 0) {
nfs42_copy_dest_done(dst_inode, dst_offset, count);
status = nfs_post_op_update_inode(dst_inode, res.dst_fattr);
}
kfree(res.dst_fattr);
return status;

2
fs/nfs/nfs42xattr.c
View file

@ -168,7 +168,7 @@ nfs4_xattr_entry_lru_del(struct nfs4_xattr_entry *entry)
* make it easier to copy the value after an RPC, even if
* the value will not be passed up to application (e.g.
* for a 'query' getxattr with NULL buffer).
* @len: Length of the value. Can be 0 for zero-length attribues.
* @len: Length of the value. Can be 0 for zero-length attributes.
* @value and @pages will be NULL if @len is 0.
*/
static struct nfs4_xattr_entry *

4
fs/nfs/nfs4file.c
View file

@ -420,9 +420,7 @@ static const struct nfs4_ssc_client_ops nfs4_ssc_clnt_ops_tbl = {
*/
void nfs42_ssc_register_ops(void)
{
#ifdef CONFIG_NFSD_V4
nfs42_ssc_register(&nfs4_ssc_clnt_ops_tbl);
#endif
}
/**
@ -433,9 +431,7 @@ void nfs42_ssc_register_ops(void)
*/
void nfs42_ssc_unregister_ops(void)
{
#ifdef CONFIG_NFSD_V4
nfs42_ssc_unregister(&nfs4_ssc_clnt_ops_tbl);
#endif
}
#endif /* CONFIG_NFS_V4_2 */

264
fs/nfs/nfs4proc.c
View file

@ -108,9 +108,10 @@ static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *,
static int nfs41_free_stateid(struct nfs_server *, const nfs4_stateid *,
const struct cred *, bool);
#endif
static void nfs4_bitmask_adjust(__u32 *bitmask, struct inode *inode,
struct nfs_server *server,
struct nfs4_label *label);
static void nfs4_bitmask_set(__u32 bitmask[NFS4_BITMASK_SZ],
const __u32 *src, struct inode *inode,
struct nfs_server *server,
struct nfs4_label *label);
#ifdef CONFIG_NFS_V4_SECURITY_LABEL
static inline struct nfs4_label *
@ -263,6 +264,7 @@ const u32 nfs4_fsinfo_bitmap[3] = { FATTR4_WORD0_MAXFILESIZE
| FATTR4_WORD1_FS_LAYOUT_TYPES,
FATTR4_WORD2_LAYOUT_BLKSIZE
| FATTR4_WORD2_CLONE_BLKSIZE
| FATTR4_WORD2_CHANGE_ATTR_TYPE
| FATTR4_WORD2_XATTR_SUPPORT
};
@ -283,7 +285,7 @@ const u32 nfs4_fs_locations_bitmap[3] = {
};
static void nfs4_bitmap_copy_adjust(__u32 *dst, const __u32 *src,
struct inode *inode)
struct inode *inode, unsigned long flags)
{
unsigned long cache_validity;
@ -291,22 +293,20 @@ static void nfs4_bitmap_copy_adjust(__u32 *dst, const __u32 *src,
if (!inode || !nfs4_have_delegation(inode, FMODE_READ))
return;
cache_validity = READ_ONCE(NFS_I(inode)->cache_validity);
if (!(cache_validity & NFS_INO_REVAL_FORCED))
cache_validity &= ~(NFS_INO_INVALID_CHANGE
| NFS_INO_INVALID_SIZE);
cache_validity = READ_ONCE(NFS_I(inode)->cache_validity) | flags;
/* Remove the attributes over which we have full control */
dst[1] &= ~FATTR4_WORD1_RAWDEV;
if (!(cache_validity & NFS_INO_INVALID_SIZE))
dst[0] &= ~FATTR4_WORD0_SIZE;
if (!(cache_validity & NFS_INO_INVALID_CHANGE))
dst[0] &= ~FATTR4_WORD0_CHANGE;
}
static void nfs4_bitmap_copy_adjust_setattr(__u32 *dst,
const __u32 *src, struct inode *inode)
{
nfs4_bitmap_copy_adjust(dst, src, inode);
if (!(cache_validity & NFS_INO_INVALID_MODE))
dst[1] &= ~FATTR4_WORD1_MODE;
if (!(cache_validity & NFS_INO_INVALID_OTHER))
dst[1] &= ~(FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP);
}
static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dentry,
@ -1169,14 +1169,26 @@ int nfs4_call_sync(struct rpc_clnt *clnt,
static void
nfs4_inc_nlink_locked(struct inode *inode)
{
nfs_set_cache_invalid(inode, NFS_INO_INVALID_OTHER);
nfs_set_cache_invalid(inode, NFS_INO_INVALID_CHANGE |
NFS_INO_INVALID_CTIME |
NFS_INO_INVALID_NLINK);
inc_nlink(inode);
}
static void
nfs4_inc_nlink(struct inode *inode)
{
spin_lock(&inode->i_lock);
nfs4_inc_nlink_locked(inode);
spin_unlock(&inode->i_lock);
}
static void
nfs4_dec_nlink_locked(struct inode *inode)
{
nfs_set_cache_invalid(inode, NFS_INO_INVALID_OTHER);
nfs_set_cache_invalid(inode, NFS_INO_INVALID_CHANGE |
NFS_INO_INVALID_CTIME |
NFS_INO_INVALID_NLINK);
drop_nlink(inode);
}
@ -1186,11 +1198,23 @@ nfs4_update_changeattr_locked(struct inode *inode,
unsigned long timestamp, unsigned long cache_validity)
{
struct nfs_inode *nfsi = NFS_I(inode);
u64 change_attr = inode_peek_iversion_raw(inode);
cache_validity |= NFS_INO_INVALID_CTIME | NFS_INO_INVALID_MTIME;
if (cinfo->atomic && cinfo->before == inode_peek_iversion_raw(inode)) {
nfsi->cache_validity &= ~NFS_INO_REVAL_PAGECACHE;
switch (NFS_SERVER(inode)->change_attr_type) {
case NFS4_CHANGE_TYPE_IS_UNDEFINED:
break;
case NFS4_CHANGE_TYPE_IS_TIME_METADATA:
if ((s64)(change_attr - cinfo->after) > 0)
goto out;
break;
default:
if ((s64)(change_attr - cinfo->after) >= 0)
goto out;
}
if (cinfo->atomic && cinfo->before == change_attr) {
nfsi->attrtimeo_timestamp = jiffies;
} else {
if (S_ISDIR(inode->i_mode)) {
@ -1202,7 +1226,7 @@ nfs4_update_changeattr_locked(struct inode *inode,
cache_validity |= NFS_INO_REVAL_PAGECACHE;
}
if (cinfo->before != inode_peek_iversion_raw(inode))
if (cinfo->before != change_attr)
cache_validity |= NFS_INO_INVALID_ACCESS |
NFS_INO_INVALID_ACL |
NFS_INO_INVALID_XATTR;
@ -1210,8 +1234,9 @@ nfs4_update_changeattr_locked(struct inode *inode,
inode_set_iversion_raw(inode, cinfo->after);
nfsi->read_cache_jiffies = timestamp;
nfsi->attr_gencount = nfs_inc_attr_generation_counter();
nfs_set_cache_invalid(inode, cache_validity);
nfsi->cache_validity &= ~NFS_INO_INVALID_CHANGE;
out:
nfs_set_cache_invalid(inode, cache_validity);
}
void
@ -3344,12 +3369,17 @@ static int nfs4_do_setattr(struct inode *inode, const struct cred *cred,
.inode = inode,
.stateid = &arg.stateid,
};
unsigned long adjust_flags = NFS_INO_INVALID_CHANGE;
int err;
if (sattr->ia_valid & (ATTR_MODE | ATTR_KILL_SUID | ATTR_KILL_SGID))
adjust_flags |= NFS_INO_INVALID_MODE;
if (sattr->ia_valid & (ATTR_UID | ATTR_GID))
adjust_flags |= NFS_INO_INVALID_OTHER;
do {
nfs4_bitmap_copy_adjust_setattr(bitmask,
nfs4_bitmask(server, olabel),
inode);
nfs4_bitmap_copy_adjust(bitmask, nfs4_bitmask(server, olabel),
inode, adjust_flags);
err = _nfs4_do_setattr(inode, &arg, &res, cred, ctx);
switch (err) {
@ -3591,6 +3621,7 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
struct nfs4_closedata *calldata = data;
struct nfs4_state *state = calldata->state;
struct inode *inode = calldata->inode;
struct nfs_server *server = NFS_SERVER(inode);
struct pnfs_layout_hdr *lo;
bool is_rdonly, is_wronly, is_rdwr;
int call_close = 0;
@ -3647,8 +3678,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
if (calldata->arg.fmode == 0 || calldata->arg.fmode == FMODE_READ) {
/* Close-to-open cache consistency revalidation */
if (!nfs4_have_delegation(inode, FMODE_READ)) {
calldata->arg.bitmask = NFS_SERVER(inode)->cache_consistency_bitmask;
nfs4_bitmask_adjust(calldata->arg.bitmask, inode, NFS_SERVER(inode), NULL);
nfs4_bitmask_set(calldata->arg.bitmask_store,
server->cache_consistency_bitmask,
inode, server, NULL);
calldata->arg.bitmask = calldata->arg.bitmask_store;
} else
calldata->arg.bitmask = NULL;
}
@ -3835,12 +3868,9 @@ static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *f
res.attr_bitmask[2] &= FATTR4_WORD2_NFS42_MASK;
}
memcpy(server->attr_bitmask, res.attr_bitmask, sizeof(server->attr_bitmask));
server->caps &= ~(NFS_CAP_ACLS|NFS_CAP_HARDLINKS|
NFS_CAP_SYMLINKS|NFS_CAP_FILEID|
NFS_CAP_MODE|NFS_CAP_NLINK|NFS_CAP_OWNER|
NFS_CAP_OWNER_GROUP|NFS_CAP_ATIME|
NFS_CAP_CTIME|NFS_CAP_MTIME|
NFS_CAP_SECURITY_LABEL);
server->caps &= ~(NFS_CAP_ACLS | NFS_CAP_HARDLINKS |
NFS_CAP_SYMLINKS| NFS_CAP_SECURITY_LABEL);
server->fattr_valid = NFS_ATTR_FATTR_V4;
if (res.attr_bitmask[0] & FATTR4_WORD0_ACL &&
res.acl_bitmask & ACL4_SUPPORT_ALLOW_ACL)
server->caps |= NFS_CAP_ACLS;
@ -3848,25 +3878,29 @@ static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *f
server->caps |= NFS_CAP_HARDLINKS;
if (res.has_symlinks != 0)
server->caps |= NFS_CAP_SYMLINKS;
if (res.attr_bitmask[0] & FATTR4_WORD0_FILEID)
server->caps |= NFS_CAP_FILEID;
if (res.attr_bitmask[1] & FATTR4_WORD1_MODE)
server->caps |= NFS_CAP_MODE;
if (res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS)
server->caps |= NFS_CAP_NLINK;
if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER)
server->caps |= NFS_CAP_OWNER;
if (res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP)
server->caps |= NFS_CAP_OWNER_GROUP;
if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS)
server->caps |= NFS_CAP_ATIME;
if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA)
server->caps |= NFS_CAP_CTIME;
if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY)
server->caps |= NFS_CAP_MTIME;
if (!(res.attr_bitmask[0] & FATTR4_WORD0_FILEID))
server->fattr_valid &= ~NFS_ATTR_FATTR_FILEID;
if (!(res.attr_bitmask[1] & FATTR4_WORD1_MODE))
server->fattr_valid &= ~NFS_ATTR_FATTR_MODE;
if (!(res.attr_bitmask[1] & FATTR4_WORD1_NUMLINKS))
server->fattr_valid &= ~NFS_ATTR_FATTR_NLINK;
if (!(res.attr_bitmask[1] & FATTR4_WORD1_OWNER))
server->fattr_valid &= ~(NFS_ATTR_FATTR_OWNER |
NFS_ATTR_FATTR_OWNER_NAME);
if (!(res.attr_bitmask[1] & FATTR4_WORD1_OWNER_GROUP))
server->fattr_valid &= ~(NFS_ATTR_FATTR_GROUP |
NFS_ATTR_FATTR_GROUP_NAME);
if (!(res.attr_bitmask[1] & FATTR4_WORD1_SPACE_USED))
server->fattr_valid &= ~NFS_ATTR_FATTR_SPACE_USED;
if (!(res.attr_bitmask[1] & FATTR4_WORD1_TIME_ACCESS))
server->fattr_valid &= ~NFS_ATTR_FATTR_ATIME;
if (!(res.attr_bitmask[1] & FATTR4_WORD1_TIME_METADATA))
server->fattr_valid &= ~NFS_ATTR_FATTR_CTIME;
if (!(res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY))
server->fattr_valid &= ~NFS_ATTR_FATTR_MTIME;
#ifdef CONFIG_NFS_V4_SECURITY_LABEL
if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL)
server->caps |= NFS_CAP_SECURITY_LABEL;
if (!(res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL))
server->fattr_valid &= ~NFS_ATTR_FATTR_V4_SECURITY_LABEL;
#endif
memcpy(server->attr_bitmask_nl, res.attr_bitmask,
sizeof(server->attr_bitmask));
@ -4154,8 +4188,7 @@ static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
if (inode && (server->flags & NFS_MOUNT_SOFTREVAL))
task_flags |= RPC_TASK_TIMEOUT;
nfs4_bitmap_copy_adjust(bitmask, nfs4_bitmask(server, label), inode);
nfs4_bitmap_copy_adjust(bitmask, nfs4_bitmask(server, label), inode, 0);
nfs_fattr_init(fattr);
nfs4_init_sequence(&args.seq_args, &res.seq_res, 0, 0);
return nfs4_do_call_sync(server->client, server, &msg,
@ -4582,11 +4615,11 @@ _nfs4_proc_remove(struct inode *dir, const struct qstr *name, u32 ftype)
status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1);
if (status == 0) {
spin_lock(&dir->i_lock);
nfs4_update_changeattr_locked(dir, &res.cinfo, timestamp,
NFS_INO_INVALID_DATA);
/* Removing a directory decrements nlink in the parent */
if (ftype == NF4DIR && dir->i_nlink > 2)
nfs4_dec_nlink_locked(dir);
nfs4_update_changeattr_locked(dir, &res.cinfo, timestamp,
NFS_INO_INVALID_DATA);
spin_unlock(&dir->i_lock);
}
return status;
@ -4715,11 +4748,11 @@ static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
/* Note: If we moved a directory, nlink will change */
nfs4_update_changeattr(old_dir, &res->old_cinfo,
res->old_fattr->time_start,
NFS_INO_INVALID_OTHER |
NFS_INO_INVALID_NLINK |
NFS_INO_INVALID_DATA);
nfs4_update_changeattr(new_dir, &res->new_cinfo,
res->new_fattr->time_start,
NFS_INO_INVALID_OTHER |
NFS_INO_INVALID_NLINK |
NFS_INO_INVALID_DATA);
} else
nfs4_update_changeattr(old_dir, &res->old_cinfo,
@ -4761,12 +4794,13 @@ static int _nfs4_proc_link(struct inode *inode, struct inode *dir, const struct
}
nfs4_inode_make_writeable(inode);
nfs4_bitmap_copy_adjust_setattr(bitmask, nfs4_bitmask(server, res.label), inode);
nfs4_bitmap_copy_adjust(bitmask, nfs4_bitmask(server, res.label), inode,
NFS_INO_INVALID_CHANGE);
status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
if (!status) {
nfs4_update_changeattr(dir, &res.cinfo, res.fattr->time_start,
NFS_INO_INVALID_DATA);
nfs4_inc_nlink(inode);
status = nfs_post_op_update_inode(inode, res.fattr);
if (!status)
nfs_setsecurity(inode, res.fattr, res.label);
@ -4844,12 +4878,12 @@ static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_
&data->arg.seq_args, &data->res.seq_res, 1);
if (status == 0) {
spin_lock(&dir->i_lock);
nfs4_update_changeattr_locked(dir, &data->res.dir_cinfo,
data->res.fattr->time_start,
NFS_INO_INVALID_DATA);
/* Creating a directory bumps nlink in the parent */
if (data->arg.ftype == NF4DIR)
nfs4_inc_nlink_locked(dir);
nfs4_update_changeattr_locked(dir, &data->res.dir_cinfo,
data->res.fattr->time_start,
NFS_INO_INVALID_DATA);
spin_unlock(&dir->i_lock);
status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label);
}
@ -5416,37 +5450,39 @@ bool nfs4_write_need_cache_consistency_data(struct nfs_pgio_header *hdr)
return nfs4_have_delegation(hdr->inode, FMODE_READ) == 0;
}
static void nfs4_bitmask_adjust(__u32 *bitmask, struct inode *inode,
struct nfs_server *server,
struct nfs4_label *label)
static void nfs4_bitmask_set(__u32 bitmask[NFS4_BITMASK_SZ], const __u32 *src,
struct inode *inode, struct nfs_server *server,
struct nfs4_label *label)
{
unsigned long cache_validity = READ_ONCE(NFS_I(inode)->cache_validity);
unsigned int i;
if ((cache_validity & NFS_INO_INVALID_DATA) ||
(cache_validity & NFS_INO_REVAL_PAGECACHE) ||
(cache_validity & NFS_INO_REVAL_FORCED) ||
(cache_validity & NFS_INO_INVALID_OTHER))
nfs4_bitmap_copy_adjust(bitmask, nfs4_bitmask(server, label), inode);
memcpy(bitmask, src, sizeof(*bitmask) * NFS4_BITMASK_SZ);
if (cache_validity & NFS_INO_INVALID_ATIME)
bitmask[1] |= FATTR4_WORD1_TIME_ACCESS;
if (cache_validity & NFS_INO_INVALID_OTHER)
bitmask[1] |= FATTR4_WORD1_MODE | FATTR4_WORD1_OWNER |
FATTR4_WORD1_OWNER_GROUP |
FATTR4_WORD1_NUMLINKS;
if (label && label->len && cache_validity & NFS_INO_INVALID_LABEL)
bitmask[2] |= FATTR4_WORD2_SECURITY_LABEL;
if (cache_validity & NFS_INO_INVALID_CHANGE)
bitmask[0] |= FATTR4_WORD0_CHANGE;
if (cache_validity & NFS_INO_INVALID_ATIME)
bitmask[1] |= FATTR4_WORD1_TIME_ACCESS;
if (cache_validity & NFS_INO_INVALID_MODE)
bitmask[1] |= FATTR4_WORD1_MODE;
if (cache_validity & NFS_INO_INVALID_OTHER)
bitmask[1] |= FATTR4_WORD1_OWNER | FATTR4_WORD1_OWNER_GROUP;
if (cache_validity & NFS_INO_INVALID_NLINK)
bitmask[1] |= FATTR4_WORD1_NUMLINKS;
if (label && label->len && cache_validity & NFS_INO_INVALID_LABEL)
bitmask[2] |= FATTR4_WORD2_SECURITY_LABEL;
if (cache_validity & NFS_INO_INVALID_CTIME)
bitmask[1] |= FATTR4_WORD1_TIME_METADATA;
if (cache_validity & NFS_INO_INVALID_MTIME)
bitmask[1] |= FATTR4_WORD1_TIME_MODIFY;
if (cache_validity & NFS_INO_INVALID_SIZE)
bitmask[0] |= FATTR4_WORD0_SIZE;
if (cache_validity & NFS_INO_INVALID_BLOCKS)
bitmask[1] |= FATTR4_WORD1_SPACE_USED;
if (cache_validity & NFS_INO_INVALID_SIZE)
bitmask[0] |= FATTR4_WORD0_SIZE;
for (i = 0; i < NFS4_BITMASK_SZ; i++)
bitmask[i] &= server->attr_bitmask[i];
}
static void nfs4_proc_write_setup(struct nfs_pgio_header *hdr,
@ -5459,8 +5495,10 @@ static void nfs4_proc_write_setup(struct nfs_pgio_header *hdr,
hdr->args.bitmask = NULL;
hdr->res.fattr = NULL;
} else {
hdr->args.bitmask = server->cache_consistency_bitmask;
nfs4_bitmask_adjust(hdr->args.bitmask, hdr->inode, server, NULL);
nfs4_bitmask_set(hdr->args.bitmask_store,
server->cache_consistency_bitmask,
hdr->inode, server, NULL);
hdr->args.bitmask = hdr->args.bitmask_store;
}
if (!hdr->pgio_done_cb)
@ -5858,7 +5896,7 @@ static ssize_t nfs4_proc_get_acl(struct inode *inode, void *buf, size_t buflen)
if (!nfs4_server_supports_acls(server))
return -EOPNOTSUPP;
ret = nfs_revalidate_inode(server, inode);
ret = nfs_revalidate_inode(inode, NFS_INO_INVALID_CHANGE);
if (ret < 0)
return ret;
if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL)
@ -6502,8 +6540,10 @@ static int _nfs4_proc_delegreturn(struct inode *inode, const struct cred *cred,
data->args.fhandle = &data->fh;
data->args.stateid = &data->stateid;
data->args.bitmask = server->cache_consistency_bitmask;
nfs4_bitmask_adjust(data->args.bitmask, inode, server, NULL);
nfs4_bitmask_set(data->args.bitmask_store,
server->cache_consistency_bitmask, inode, server,
NULL);
data->args.bitmask = data->args.bitmask_store;
nfs_copy_fh(&data->fh, NFS_FH(inode));
nfs4_stateid_copy(&data->stateid, stateid);
data->res.fattr = &data->fattr;
@ -7250,22 +7290,22 @@ nfs4_retry_setlk_simple(struct nfs4_state *state, int cmd,
#ifdef CONFIG_NFS_V4_1
struct nfs4_lock_waiter {
struct task_struct *task;
struct inode *inode;
struct nfs_lowner *owner;
struct nfs_lowner owner;
wait_queue_entry_t wait;
};
static int
nfs4_wake_lock_waiter(wait_queue_entry_t *wait, unsigned int mode, int flags, void *key)
{
int ret;
struct nfs4_lock_waiter *waiter = wait->private;
struct nfs4_lock_waiter *waiter =
container_of(wait, struct nfs4_lock_waiter, wait);
/* NULL key means to wake up everyone */
if (key) {
struct cb_notify_lock_args *cbnl = key;
struct nfs_lowner *lowner = &cbnl->cbnl_owner,
*wowner = waiter->owner;
*wowner = &waiter->owner;
/* Only wake if the callback was for the same owner. */
if (lowner->id != wowner->id || lowner->s_dev != wowner->s_dev)
@ -7276,53 +7316,45 @@ nfs4_wake_lock_waiter(wait_queue_entry_t *wait, unsigned int mode, int flags, vo
return 0;
}
/* override "private" so we can use default_wake_function */
wait->private = waiter->task;
ret = woken_wake_function(wait, mode, flags, key);
if (ret)
list_del_init(&wait->entry);
wait->private = waiter;
return ret;
return woken_wake_function(wait, mode, flags, key);
}
static int
nfs4_retry_setlk(struct nfs4_state *state, int cmd, struct file_lock *request)
{
int status = -ERESTARTSYS;
struct nfs4_lock_state *lsp = request->fl_u.nfs4_fl.owner;
struct nfs_server *server = NFS_SERVER(state->inode);
struct nfs_client *clp = server->nfs_client;
wait_queue_head_t *q = &clp->cl_lock_waitq;
struct nfs_lowner owner = { .clientid = clp->cl_clientid,
.id = lsp->ls_seqid.owner_id,
.s_dev = server->s_dev };
struct nfs4_lock_waiter waiter = { .task = current,
.inode = state->inode,
.owner = &owner};
wait_queue_entry_t wait;
struct nfs4_lock_waiter waiter = {
.inode = state->inode,
.owner = { .clientid = clp->cl_clientid,
.id = lsp->ls_seqid.owner_id,
.s_dev = server->s_dev },
};
int status;
/* Don't bother with waitqueue if we don't expect a callback */
if (!test_bit(NFS_STATE_MAY_NOTIFY_LOCK, &state->flags))
return nfs4_retry_setlk_simple(state, cmd, request);
init_wait(&wait);
wait.private = &waiter;
wait.func = nfs4_wake_lock_waiter;
init_wait(&waiter.wait);
waiter.wait.func = nfs4_wake_lock_waiter;
add_wait_queue(q, &waiter.wait);
while(!signalled()) {
add_wait_queue(q, &wait);
do {
status = nfs4_proc_setlk(state, cmd, request);
if ((status != -EAGAIN) || IS_SETLK(cmd)) {
finish_wait(q, &wait);
if (status != -EAGAIN || IS_SETLK(cmd))
break;
}
status = -ERESTARTSYS;
freezer_do_not_count();
wait_woken(&wait, TASK_INTERRUPTIBLE, NFS4_LOCK_MAXTIMEOUT);
wait_woken(&waiter.wait, TASK_INTERRUPTIBLE,
NFS4_LOCK_MAXTIMEOUT);
freezer_count();
finish_wait(q, &wait);
}
} while (!signalled());
remove_wait_queue(q, &waiter.wait);
return status;
}
@ -7615,7 +7647,7 @@ static int nfs4_xattr_get_nfs4_user(const struct xattr_handler *handler,
return -EACCES;
}
ret = nfs_revalidate_inode(NFS_SERVER(inode), inode);
ret = nfs_revalidate_inode(inode, NFS_INO_INVALID_CHANGE);
if (ret)
return ret;
@ -7646,7 +7678,7 @@ nfs4_listxattr_nfs4_user(struct inode *inode, char *list, size_t list_len)
return 0;
}
ret = nfs_revalidate_inode(NFS_SERVER(inode), inode);
ret = nfs_revalidate_inode(inode, NFS_INO_INVALID_CHANGE);
if (ret)
return ret;

2
fs/nfs/nfs4state.c
View file

@ -645,7 +645,7 @@ void nfs4_purge_state_owners(struct nfs_server *server, struct list_head *head)
}
/**
* nfs4_purge_state_owners - Release all cached state owners
* nfs4_free_state_owners - Release all cached state owners
* @head: resulting list of state owners
*
* Frees a list of state owners that was generated by

47
fs/nfs/nfs4trace.h
View file

@ -666,7 +666,42 @@ TRACE_EVENT(nfs4_state_mgr_failed,
)
)
TRACE_EVENT(nfs4_xdr_status,
TRACE_EVENT(nfs4_xdr_bad_operation,
TP_PROTO(
const struct xdr_stream *xdr,
u32 op,
u32 expected
),
TP_ARGS(xdr, op, expected),
TP_STRUCT__entry(
__field(unsigned int, task_id)
__field(unsigned int, client_id)
__field(u32, xid)
__field(u32, op)
__field(u32, expected)
),
TP_fast_assign(
const struct rpc_rqst *rqstp = xdr->rqst;
const struct rpc_task *task = rqstp->rq_task;
__entry->task_id = task->tk_pid;
__entry->client_id = task->tk_client->cl_clid;
__entry->xid = be32_to_cpu(rqstp->rq_xid);
__entry->op = op;
__entry->expected = expected;
),
TP_printk(
"task:%u@%d xid=0x%08x operation=%u, expected=%u",
__entry->task_id, __entry->client_id, __entry->xid,
__entry->op, __entry->expected
)
);
DECLARE_EVENT_CLASS(nfs4_xdr_event,
TP_PROTO(
const struct xdr_stream *xdr,
u32 op,
@ -701,6 +736,16 @@ TRACE_EVENT(nfs4_xdr_status,
__entry->op
)
);
#define DEFINE_NFS4_XDR_EVENT(name) \
DEFINE_EVENT(nfs4_xdr_event, name, \
TP_PROTO( \
const struct xdr_stream *xdr, \
u32 op, \
u32 error \
), \
TP_ARGS(xdr, op, error))
DEFINE_NFS4_XDR_EVENT(nfs4_xdr_status);
DEFINE_NFS4_XDR_EVENT(nfs4_xdr_bad_filehandle);
DECLARE_EVENT_CLASS(nfs4_cb_error_class,
TP_PROTO(

60
fs/nfs/nfs4xdr.c
View file

@ -144,7 +144,17 @@ static int decode_layoutget(struct xdr_stream *xdr, struct rpc_rqst *req,
* layout types will be returned.
*/
#define decode_fsinfo_maxsz (op_decode_hdr_maxsz + \
nfs4_fattr_bitmap_maxsz + 4 + 8 + 5)
nfs4_fattr_bitmap_maxsz + 1 + \
1 /* lease time */ + \
2 /* max filesize */ + \
2 /* max read */ + \
2 /* max write */ + \
nfstime4_maxsz /* time delta */ + \
5 /* fs layout types */ + \
1 /* layout blksize */ + \
1 /* clone blksize */ + \
1 /* change attr type */ + \
1 /* xattr support */)
#define encode_renew_maxsz (op_encode_hdr_maxsz + 3)
#define decode_renew_maxsz (op_decode_hdr_maxsz)
#define encode_setclientid_maxsz \
@ -3200,9 +3210,7 @@ static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected,
*nfs_retval = nfs4_stat_to_errno(nfserr);
return true;
out_bad_operation:
dprintk("nfs: Server returned operation"
" %d but we issued a request for %d\n",
opnum, expected);
trace_nfs4_xdr_bad_operation(xdr, opnum, expected);
*nfs_retval = -EREMOTEIO;
return false;
out_overflow:
@ -3487,8 +3495,11 @@ static int decode_attr_filehandle(struct xdr_stream *xdr, uint32_t *bitmap, stru
if (unlikely(!p))
return -EIO;
len = be32_to_cpup(p);
if (len > NFS4_FHSIZE)
return -EIO;
if (len > NFS4_FHSIZE || len == 0) {
trace_nfs4_xdr_bad_filehandle(xdr, OP_READDIR,
NFS4ERR_BADHANDLE);
return -EREMOTEIO;
}
p = xdr_inline_decode(xdr, len);
if (unlikely(!p))
return -EIO;
@ -4837,6 +4848,32 @@ static int decode_attr_clone_blksize(struct xdr_stream *xdr, uint32_t *bitmap,
return 0;
}
static int decode_attr_change_attr_type(struct xdr_stream *xdr,
uint32_t *bitmap,
enum nfs4_change_attr_type *res)
{
u32 tmp = NFS4_CHANGE_TYPE_IS_UNDEFINED;
dprintk("%s: bitmap is %x\n", __func__, bitmap[2]);
if (bitmap[2] & FATTR4_WORD2_CHANGE_ATTR_TYPE) {
if (xdr_stream_decode_u32(xdr, &tmp))
return -EIO;
bitmap[2] &= ~FATTR4_WORD2_CHANGE_ATTR_TYPE;
}
switch(tmp) {
case NFS4_CHANGE_TYPE_IS_MONOTONIC_INCR:
case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER:
case NFS4_CHANGE_TYPE_IS_VERSION_COUNTER_NOPNFS:
case NFS4_CHANGE_TYPE_IS_TIME_METADATA:
*res = tmp;
break;
default:
*res = NFS4_CHANGE_TYPE_IS_UNDEFINED;
}
return 0;
}
static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
{
unsigned int savep;
@ -4885,6 +4922,11 @@ static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo)
if (status)
goto xdr_error;
status = decode_attr_change_attr_type(xdr, bitmap,
&fsinfo->change_attr_type);
if (status)
goto xdr_error;
status = decode_attr_xattrsupport(xdr, bitmap,
&fsinfo->xattr_support);
if (status)
@ -4913,8 +4955,10 @@ static int decode_getfh(struct xdr_stream *xdr, struct nfs_fh *fh)
if (unlikely(!p))
return -EIO;
len = be32_to_cpup(p);
if (len > NFS4_FHSIZE)
return -EIO;
if (len > NFS4_FHSIZE || len == 0) {
trace_nfs4_xdr_bad_filehandle(xdr, OP_GETFH, NFS4ERR_BADHANDLE);
return -EREMOTEIO;
}
fh->size = len;
p = xdr_inline_decode(xdr, len);
if (unlikely(!p))

1
fs/nfs/nfstrace.c
View file

@ -12,3 +12,4 @@
EXPORT_TRACEPOINT_SYMBOL_GPL(nfs_fsync_enter);
EXPORT_TRACEPOINT_SYMBOL_GPL(nfs_fsync_exit);
EXPORT_TRACEPOINT_SYMBOL_GPL(nfs_xdr_status);
EXPORT_TRACEPOINT_SYMBOL_GPL(nfs_xdr_bad_filehandle);

22
fs/nfs/nfstrace.h
View file

@ -45,6 +45,11 @@ TRACE_DEFINE_ENUM(NFS_INO_INVALID_CTIME);
TRACE_DEFINE_ENUM(NFS_INO_INVALID_MTIME);
TRACE_DEFINE_ENUM(NFS_INO_INVALID_SIZE);
TRACE_DEFINE_ENUM(NFS_INO_INVALID_OTHER);
TRACE_DEFINE_ENUM(NFS_INO_DATA_INVAL_DEFER);
TRACE_DEFINE_ENUM(NFS_INO_INVALID_BLOCKS);
TRACE_DEFINE_ENUM(NFS_INO_INVALID_XATTR);
TRACE_DEFINE_ENUM(NFS_INO_INVALID_NLINK);
TRACE_DEFINE_ENUM(NFS_INO_INVALID_MODE);
#define nfs_show_cache_validity(v) \
__print_flags(v, "|", \
@ -60,7 +65,11 @@ TRACE_DEFINE_ENUM(NFS_INO_INVALID_OTHER);
{ NFS_INO_INVALID_MTIME, "INVALID_MTIME" }, \
{ NFS_INO_INVALID_SIZE, "INVALID_SIZE" }, \
{ NFS_INO_INVALID_OTHER, "INVALID_OTHER" }, \
{ NFS_INO_INVALID_XATTR, "INVALID_XATTR" })
{ NFS_INO_DATA_INVAL_DEFER, "DATA_INVAL_DEFER" }, \
{ NFS_INO_INVALID_BLOCKS, "INVALID_BLOCKS" }, \
{ NFS_INO_INVALID_XATTR, "INVALID_XATTR" }, \
{ NFS_INO_INVALID_NLINK, "INVALID_NLINK" }, \
{ NFS_INO_INVALID_MODE, "INVALID_MODE" })
TRACE_DEFINE_ENUM(NFS_INO_ADVISE_RDPLUS);
TRACE_DEFINE_ENUM(NFS_INO_STALE);
@ -1392,7 +1401,7 @@ TRACE_DEFINE_ENUM(NFSERR_JUKEBOX);
{ NFSERR_BADTYPE, "BADTYPE" }, \
{ NFSERR_JUKEBOX, "JUKEBOX" })
TRACE_EVENT(nfs_xdr_status,
DECLARE_EVENT_CLASS(nfs_xdr_event,
TP_PROTO(
const struct xdr_stream *xdr,
int error
@ -1434,6 +1443,15 @@ TRACE_EVENT(nfs_xdr_status,
nfs_show_status(__entry->error)
)
);
#define DEFINE_NFS_XDR_EVENT(name) \
DEFINE_EVENT(nfs_xdr_event, name, \
TP_PROTO( \
const struct xdr_stream *xdr, \
int error \
), \
TP_ARGS(xdr, error))
DEFINE_NFS_XDR_EVENT(nfs_xdr_status);
DEFINE_NFS_XDR_EVENT(nfs_xdr_bad_filehandle);
#endif /* _TRACE_NFS_H */

4
fs/nfs/pagelist.c
View file

@ -577,7 +577,7 @@ static void nfs_clear_request(struct nfs_page *req)
}
/**
* nfs_release_request - Release the count on an NFS read/write request
* nfs_free_request - Release the count on an NFS read/write request
* @req: request to release
*
* Note: Should never be called with the spinlock held!
@ -1152,7 +1152,7 @@ nfs_pageio_cleanup_request(struct nfs_pageio_descriptor *desc,
}
/**
* nfs_pageio_add_request - Attempt to coalesce a request into a page list.
* __nfs_pageio_add_request - Attempt to coalesce a request into a page list.
* @desc: destination io descriptor
* @req: request
*

11
fs/nfs/pnfs.c
View file

@ -1344,7 +1344,7 @@ _pnfs_return_layout(struct inode *ino)
}
valid_layout = pnfs_layout_is_valid(lo);
pnfs_clear_layoutcommit(ino, &tmp_list);
pnfs_mark_matching_lsegs_invalid(lo, &tmp_list, NULL, 0);
pnfs_mark_matching_lsegs_return(lo, &tmp_list, NULL, 0);
if (NFS_SERVER(ino)->pnfs_curr_ld->return_range) {
struct pnfs_layout_range range = {
@ -2410,9 +2410,7 @@ pnfs_layout_process(struct nfs4_layoutget *lgp)
.iomode = IOMODE_ANY,
.length = NFS4_MAX_UINT64,
};
pnfs_set_plh_return_info(lo, IOMODE_ANY, 0);
pnfs_mark_matching_lsegs_return(lo, &lo->plh_return_segs,
&range, 0);
pnfs_mark_matching_lsegs_return(lo, &free_me, &range, 0);
goto out_forget;
} else {
/* We have a completely new layout */
@ -2468,6 +2466,9 @@ pnfs_mark_matching_lsegs_return(struct pnfs_layout_hdr *lo,
assert_spin_locked(&lo->plh_inode->i_lock);
if (test_bit(NFS_LAYOUT_RETURN_REQUESTED, &lo->plh_flags))
tmp_list = &lo->plh_return_segs;
list_for_each_entry_safe(lseg, next, &lo->plh_segs, pls_list)
if (pnfs_match_lseg_recall(lseg, return_range, seq)) {
dprintk("%s: marking lseg %p iomode %d "
@ -2475,6 +2476,8 @@ pnfs_mark_matching_lsegs_return(struct pnfs_layout_hdr *lo,
lseg, lseg->pls_range.iomode,
lseg->pls_range.offset,
lseg->pls_range.length);
if (test_bit(NFS_LSEG_LAYOUTRETURN, &lseg->pls_flags))
tmp_list = &lo->plh_return_segs;
if (mark_lseg_invalid(lseg, tmp_list))
continue;
remaining++;

1
fs/nfs/proc.c
View file

@ -91,6 +91,7 @@ nfs_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
info->dtpref = fsinfo.tsize;
info->maxfilesize = 0x7FFFFFFF;
info->lease_time = 0;
info->change_attr_type = NFS4_CHANGE_TYPE_IS_TIME_METADATA;
return 0;
}

6
fs/nfs/super.c
View file

@ -116,16 +116,12 @@ static void unregister_nfs4_fs(void)
#ifdef CONFIG_NFS_V4_2
static void nfs_ssc_register_ops(void)
{
#ifdef CONFIG_NFSD_V4
nfs_ssc_register(&nfs_ssc_clnt_ops_tbl);
#endif
}
static void nfs_ssc_unregister_ops(void)
{
#ifdef CONFIG_NFSD_V4
nfs_ssc_unregister(&nfs_ssc_clnt_ops_tbl);
#endif
}
#endif /* CONFIG_NFS_V4_2 */
@ -867,7 +863,7 @@ static int nfs_request_mount(struct fs_context *fc,
* Now ask the mount server to map our export path
* to a file handle.
*/
status = nfs_mount(&request);
status = nfs_mount(&request, ctx->timeo, ctx->retrans);
if (status != 0) {
dfprintk(MOUNT, "NFS: unable to mount server %s, error %d\n",
request.hostname, status);

7
fs/nfs/write.c
View file

@ -764,9 +764,6 @@ static void nfs_inode_add_request(struct inode *inode, struct nfs_page *req)
* with invalidate/truncate.
*/
spin_lock(&mapping->private_lock);
if (!nfs_have_writebacks(inode) &&
NFS_PROTO(inode)->have_delegation(inode, FMODE_WRITE))
inode_inc_iversion_raw(inode);
if (likely(!PageSwapCache(req->wb_page))) {
set_bit(PG_MAPPED, &req->wb_flags);
SetPagePrivate(req->wb_page);
@ -1293,7 +1290,7 @@ static bool nfs_write_pageuptodate(struct page *page, struct inode *inode,
if (nfs_have_delegated_attributes(inode))
goto out;
if (nfsi->cache_validity &
(NFS_INO_REVAL_PAGECACHE | NFS_INO_INVALID_SIZE))
(NFS_INO_INVALID_CHANGE | NFS_INO_INVALID_SIZE))
return false;
smp_rmb();
if (test_bit(NFS_INO_INVALIDATING, &nfsi->flags) && pagelen != 0)
@ -1604,7 +1601,7 @@ static int nfs_writeback_done(struct rpc_task *task,
/* Deal with the suid/sgid bit corner case */
if (nfs_should_remove_suid(inode)) {
spin_lock(&inode->i_lock);
nfs_set_cache_invalid(inode, NFS_INO_INVALID_OTHER);
nfs_set_cache_invalid(inode, NFS_INO_INVALID_MODE);
spin_unlock(&inode->i_lock);
}
return 0;

2
fs/nfsd/Kconfig
View file

@ -138,7 +138,7 @@ config NFSD_FLEXFILELAYOUT
config NFSD_V4_2_INTER_SSC
bool "NFSv4.2 inter server to server COPY"
depends on NFSD_V4 && NFS_V4_1 && NFS_V4_2
depends on NFSD_V4 && NFS_V4_2
help
This option enables support for NFSv4.2 inter server to
server copy where the destination server calls the NFSv4.2

9
include/linux/nfs4.h
View file

@ -452,6 +452,7 @@ enum lock_type4 {
#define FATTR4_WORD2_LAYOUT_BLKSIZE (1UL << 1)
#define FATTR4_WORD2_MDSTHRESHOLD (1UL << 4)
#define FATTR4_WORD2_CLONE_BLKSIZE (1UL << 13)
#define FATTR4_WORD2_CHANGE_ATTR_TYPE (1UL << 15)
#define FATTR4_WORD2_SECURITY_LABEL (1UL << 16)
#define FATTR4_WORD2_MODE_UMASK (1UL << 17)
#define FATTR4_WORD2_XATTR_SUPPORT (1UL << 18)
@ -709,6 +710,14 @@ struct nl4_server {
} u;
};
enum nfs4_change_attr_type {
NFS4_CHANGE_TYPE_IS_MONOTONIC_INCR = 0,
NFS4_CHANGE_TYPE_IS_VERSION_COUNTER = 1,
NFS4_CHANGE_TYPE_IS_VERSION_COUNTER_NOPNFS = 2,
NFS4_CHANGE_TYPE_IS_TIME_METADATA = 3,
NFS4_CHANGE_TYPE_IS_UNDEFINED = 4,
};
/*
* Options for setxattr. These match the flags for setxattr(2).
*/

6
include/linux/nfs_fs.h
View file

@ -246,11 +246,15 @@ struct nfs4_copy_state {
BIT(13) /* Deferred cache invalidation */
#define NFS_INO_INVALID_BLOCKS BIT(14) /* cached blocks are invalid */
#define NFS_INO_INVALID_XATTR BIT(15) /* xattrs are invalid */
#define NFS_INO_INVALID_NLINK BIT(16) /* cached nlinks is invalid */
#define NFS_INO_INVALID_MODE BIT(17) /* cached mode is invalid */
#define NFS_INO_INVALID_ATTR (NFS_INO_INVALID_CHANGE \
| NFS_INO_INVALID_CTIME \
| NFS_INO_INVALID_MTIME \
| NFS_INO_INVALID_SIZE \
| NFS_INO_INVALID_NLINK \
| NFS_INO_INVALID_MODE \
| NFS_INO_INVALID_OTHER) /* inode metadata is invalid */
/*
@ -386,7 +390,7 @@ extern void nfs_access_set_mask(struct nfs_access_entry *, u32);
extern int nfs_permission(struct user_namespace *, struct inode *, int);
extern int nfs_open(struct inode *, struct file *);
extern int nfs_attribute_cache_expired(struct inode *inode);
extern int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode);
extern int nfs_revalidate_inode(struct inode *inode, unsigned long flags);
extern int __nfs_revalidate_inode(struct nfs_server *, struct inode *);
extern int nfs_clear_invalid_mapping(struct address_space *mapping);
extern bool nfs_mapping_need_revalidate_inode(struct inode *inode);

13
include/linux/nfs_fs_sb.h
View file

@ -156,6 +156,7 @@ struct nfs_server {
#define NFS_MOUNT_WRITE_EAGER 0x01000000
#define NFS_MOUNT_WRITE_WAIT 0x02000000
unsigned int fattr_valid; /* Valid attributes */
unsigned int caps; /* server capabilities */
unsigned int rsize; /* read size */
unsigned int rpages; /* read size (in pages) */
@ -180,6 +181,9 @@ struct nfs_server {
#define NFS_OPTION_FSCACHE 0x00000001 /* - local caching enabled */
#define NFS_OPTION_MIGRATION 0x00000002 /* - NFSv4 migration enabled */
enum nfs4_change_attr_type
change_attr_type;/* Description of change attribute */
struct nfs_fsid fsid;
__u64 maxfilesize; /* maximum file size */
struct timespec64 time_delta; /* smallest time granularity */
@ -265,16 +269,7 @@ struct nfs_server {
#define NFS_CAP_SYMLINKS (1U << 2)
#define NFS_CAP_ACLS (1U << 3)
#define NFS_CAP_ATOMIC_OPEN (1U << 4)
/* #define NFS_CAP_CHANGE_ATTR (1U << 5) */
#define NFS_CAP_LGOPEN (1U << 5)
#define NFS_CAP_FILEID (1U << 6)
#define NFS_CAP_MODE (1U << 7)
#define NFS_CAP_NLINK (1U << 8)
#define NFS_CAP_OWNER (1U << 9)
#define NFS_CAP_OWNER_GROUP (1U << 10)
#define NFS_CAP_ATIME (1U << 11)
#define NFS_CAP_CTIME (1U << 12)
#define NFS_CAP_MTIME (1U << 13)
#define NFS_CAP_POSIX_LOCK (1U << 14)
#define NFS_CAP_UIDGID_NOMAP (1U << 15)
#define NFS_CAP_STATEID_NFSV41 (1U << 16)

13
include/linux/nfs_xdr.h
View file

@ -15,6 +15,8 @@
#define NFS_DEF_FILE_IO_SIZE (4096U)
#define NFS_MIN_FILE_IO_SIZE (1024U)
#define NFS_BITMASK_SZ 3
struct nfs4_string {
unsigned int len;
char *data;
@ -150,6 +152,8 @@ struct nfs_fsinfo {
__u32 layouttype[NFS_MAX_LAYOUT_TYPES]; /* supported pnfs layout driver */
__u32 blksize; /* preferred pnfs io block size */
__u32 clone_blksize; /* granularity of a CLONE operation */
enum nfs4_change_attr_type
change_attr_type; /* Info about change attr */
__u32 xattr_support; /* User xattrs supported */
};
@ -525,7 +529,8 @@ struct nfs_closeargs {
struct nfs_seqid * seqid;
fmode_t fmode;
u32 share_access;
u32 * bitmask;
const u32 * bitmask;
u32 bitmask_store[NFS_BITMASK_SZ];
struct nfs4_layoutreturn_args *lr_args;
};
@ -608,7 +613,8 @@ struct nfs4_delegreturnargs {
struct nfs4_sequence_args seq_args;
const struct nfs_fh *fhandle;
const nfs4_stateid *stateid;
u32 * bitmask;
const u32 *bitmask;
u32 bitmask_store[NFS_BITMASK_SZ];
struct nfs4_layoutreturn_args *lr_args;
};
@ -648,7 +654,8 @@ struct nfs_pgio_args {
union {
unsigned int replen; /* used by read */
struct {
u32 * bitmask; /* used by write */
const u32 * bitmask; /* used by write */
u32 bitmask_store[NFS_BITMASK_SZ]; /* used by write */
enum nfs3_stable_how stable; /* used by write */
};
};

1
include/linux/sunrpc/xprt.h
View file

@ -247,6 +247,7 @@ struct rpc_xprt {
struct rpc_task * snd_task; /* Task blocked in send */
struct list_head xmit_queue; /* Send queue */
atomic_long_t xmit_queuelen;
struct svc_xprt *bc_xprt; /* NFSv4.1 backchannel */
#if defined(CONFIG_SUNRPC_BACKCHANNEL)

146
include/trace/events/rpcrdma.h
View file

@ -60,6 +60,46 @@ DECLARE_EVENT_CLASS(rpcrdma_completion_class,
), \
TP_ARGS(wc, cid))
DECLARE_EVENT_CLASS(rpcrdma_mr_completion_class,
TP_PROTO(
const struct ib_wc *wc,
const struct rpc_rdma_cid *cid
),
TP_ARGS(wc, cid),
TP_STRUCT__entry(
__field(u32, cq_id)
__field(int, completion_id)
__field(unsigned long, status)
__field(unsigned int, vendor_err)
),
TP_fast_assign(
__entry->cq_id = cid->ci_queue_id;
__entry->completion_id = cid->ci_completion_id;
__entry->status = wc->status;
if (wc->status)
__entry->vendor_err = wc->vendor_err;
else
__entry->vendor_err = 0;
),
TP_printk("cq.id=%u mr.id=%d status=%s (%lu/0x%x)",
__entry->cq_id, __entry->completion_id,
rdma_show_wc_status(__entry->status),
__entry->status, __entry->vendor_err
)
);
#define DEFINE_MR_COMPLETION_EVENT(name) \
DEFINE_EVENT(rpcrdma_mr_completion_class, name, \
TP_PROTO( \
const struct ib_wc *wc, \
const struct rpc_rdma_cid *cid \
), \
TP_ARGS(wc, cid))
DECLARE_EVENT_CLASS(rpcrdma_receive_completion_class,
TP_PROTO(
const struct ib_wc *wc,
@ -150,19 +190,17 @@ DECLARE_EVENT_CLASS(xprtrdma_rxprt,
TP_ARGS(r_xprt),
TP_STRUCT__entry(
__field(const void *, r_xprt)
__string(addr, rpcrdma_addrstr(r_xprt))
__string(port, rpcrdma_portstr(r_xprt))
),
TP_fast_assign(
__entry->r_xprt = r_xprt;
__assign_str(addr, rpcrdma_addrstr(r_xprt));
__assign_str(port, rpcrdma_portstr(r_xprt));
),
TP_printk("peer=[%s]:%s r_xprt=%p",
__get_str(addr), __get_str(port), __entry->r_xprt
TP_printk("peer=[%s]:%s",
__get_str(addr), __get_str(port)
)
);
@ -182,7 +220,6 @@ DECLARE_EVENT_CLASS(xprtrdma_connect_class,
TP_ARGS(r_xprt, rc),
TP_STRUCT__entry(
__field(const void *, r_xprt)
__field(int, rc)
__field(int, connect_status)
__string(addr, rpcrdma_addrstr(r_xprt))
@ -190,15 +227,14 @@ DECLARE_EVENT_CLASS(xprtrdma_connect_class,
),
TP_fast_assign(
__entry->r_xprt = r_xprt;
__entry->rc = rc;
__entry->connect_status = r_xprt->rx_ep->re_connect_status;
__assign_str(addr, rpcrdma_addrstr(r_xprt));
__assign_str(port, rpcrdma_portstr(r_xprt));
),
TP_printk("peer=[%s]:%s r_xprt=%p: rc=%d connection status=%d",
__get_str(addr), __get_str(port), __entry->r_xprt,
TP_printk("peer=[%s]:%s rc=%d connection status=%d",
__get_str(addr), __get_str(port),
__entry->rc, __entry->connect_status
)
);
@ -343,7 +379,7 @@ DECLARE_EVENT_CLASS(xprtrdma_mr_class,
__entry->task_id = task->tk_pid;
__entry->client_id = task->tk_client->cl_clid;
__entry->mr_id = mr->frwr.fr_mr->res.id;
__entry->mr_id = mr->mr_ibmr->res.id;
__entry->nents = mr->mr_nents;
__entry->handle = mr->mr_handle;
__entry->length = mr->mr_length;
@ -384,7 +420,7 @@ DECLARE_EVENT_CLASS(xprtrdma_anonymous_mr_class,
),
TP_fast_assign(
__entry->mr_id = mr->frwr.fr_mr->res.id;
__entry->mr_id = mr->mr_ibmr->res.id;
__entry->nents = mr->mr_nents;
__entry->handle = mr->mr_handle;
__entry->length = mr->mr_length;
@ -495,22 +531,19 @@ TRACE_EVENT(xprtrdma_op_connect,
TP_ARGS(r_xprt, delay),
TP_STRUCT__entry(
__field(const void *, r_xprt)
__field(unsigned long, delay)
__string(addr, rpcrdma_addrstr(r_xprt))
__string(port, rpcrdma_portstr(r_xprt))
),
TP_fast_assign(
__entry->r_xprt = r_xprt;
__entry->delay = delay;
__assign_str(addr, rpcrdma_addrstr(r_xprt));
__assign_str(port, rpcrdma_portstr(r_xprt));
),
TP_printk("peer=[%s]:%s r_xprt=%p delay=%lu",
__get_str(addr), __get_str(port), __entry->r_xprt,
__entry->delay
TP_printk("peer=[%s]:%s delay=%lu",
__get_str(addr), __get_str(port), __entry->delay
)
);
@ -525,7 +558,6 @@ TRACE_EVENT(xprtrdma_op_set_cto,
TP_ARGS(r_xprt, connect, reconnect),
TP_STRUCT__entry(
__field(const void *, r_xprt)
__field(unsigned long, connect)
__field(unsigned long, reconnect)
__string(addr, rpcrdma_addrstr(r_xprt))
@ -533,51 +565,18 @@ TRACE_EVENT(xprtrdma_op_set_cto,
),
TP_fast_assign(
__entry->r_xprt = r_xprt;
__entry->connect = connect;
__entry->reconnect = reconnect;
__assign_str(addr, rpcrdma_addrstr(r_xprt));
__assign_str(port, rpcrdma_portstr(r_xprt));
),
TP_printk("peer=[%s]:%s r_xprt=%p: connect=%lu reconnect=%lu",
__get_str(addr), __get_str(port), __entry->r_xprt,
TP_printk("peer=[%s]:%s connect=%lu reconnect=%lu",
__get_str(addr), __get_str(port),
__entry->connect / HZ, __entry->reconnect / HZ
)
);
TRACE_EVENT(xprtrdma_qp_event,
TP_PROTO(
const struct rpcrdma_ep *ep,
const struct ib_event *event
),
TP_ARGS(ep, event),
TP_STRUCT__entry(
__field(unsigned long, event)
__string(name, event->device->name)
__array(unsigned char, srcaddr, sizeof(struct sockaddr_in6))
__array(unsigned char, dstaddr, sizeof(struct sockaddr_in6))
),
TP_fast_assign(
const struct rdma_cm_id *id = ep->re_id;
__entry->event = event->event;
__assign_str(name, event->device->name);
memcpy(__entry->srcaddr, &id->route.addr.src_addr,
sizeof(struct sockaddr_in6));
memcpy(__entry->dstaddr, &id->route.addr.dst_addr,
sizeof(struct sockaddr_in6));
),
TP_printk("%pISpc -> %pISpc device=%s %s (%lu)",
__entry->srcaddr, __entry->dstaddr, __get_str(name),
rdma_show_ib_event(__entry->event), __entry->event
)
);
/**
** Call events
**/
@ -591,22 +590,19 @@ TRACE_EVENT(xprtrdma_createmrs,
TP_ARGS(r_xprt, count),
TP_STRUCT__entry(
__field(const void *, r_xprt)
__string(addr, rpcrdma_addrstr(r_xprt))
__string(port, rpcrdma_portstr(r_xprt))
__field(unsigned int, count)
),
TP_fast_assign(
__entry->r_xprt = r_xprt;
__entry->count = count;
__assign_str(addr, rpcrdma_addrstr(r_xprt));
__assign_str(port, rpcrdma_portstr(r_xprt));
),
TP_printk("peer=[%s]:%s r_xprt=%p: created %u MRs",
__get_str(addr), __get_str(port), __entry->r_xprt,
__entry->count
TP_printk("peer=[%s]:%s created %u MRs",
__get_str(addr), __get_str(port), __entry->count
)
);
@ -829,7 +825,7 @@ TRACE_EVENT(xprtrdma_post_recvs,
TP_ARGS(r_xprt, count, status),
TP_STRUCT__entry(
__field(const void *, r_xprt)
__field(u32, cq_id)
__field(unsigned int, count)
__field(int, status)
__field(int, posted)
@ -838,16 +834,18 @@ TRACE_EVENT(xprtrdma_post_recvs,
),
TP_fast_assign(
__entry->r_xprt = r_xprt;
const struct rpcrdma_ep *ep = r_xprt->rx_ep;
__entry->cq_id = ep->re_attr.recv_cq->res.id;
__entry->count = count;
__entry->status = status;
__entry->posted = r_xprt->rx_ep->re_receive_count;
__entry->posted = ep->re_receive_count;
__assign_str(addr, rpcrdma_addrstr(r_xprt));
__assign_str(port, rpcrdma_portstr(r_xprt));
),
TP_printk("peer=[%s]:%s r_xprt=%p: %u new recvs, %d active (rc %d)",
__get_str(addr), __get_str(port), __entry->r_xprt,
TP_printk("peer=[%s]:%s cq.id=%d %u new recvs, %d active (rc %d)",
__get_str(addr), __get_str(port), __entry->cq_id,
__entry->count, __entry->posted, __entry->status
)
);
@ -886,10 +884,10 @@ TRACE_EVENT(xprtrdma_post_linv_err,
DEFINE_RECEIVE_COMPLETION_EVENT(xprtrdma_wc_receive);
DEFINE_COMPLETION_EVENT(xprtrdma_wc_send);
DEFINE_COMPLETION_EVENT(xprtrdma_wc_fastreg);
DEFINE_COMPLETION_EVENT(xprtrdma_wc_li);
DEFINE_COMPLETION_EVENT(xprtrdma_wc_li_wake);
DEFINE_COMPLETION_EVENT(xprtrdma_wc_li_done);
DEFINE_MR_COMPLETION_EVENT(xprtrdma_wc_fastreg);
DEFINE_MR_COMPLETION_EVENT(xprtrdma_wc_li);
DEFINE_MR_COMPLETION_EVENT(xprtrdma_wc_li_wake);
DEFINE_MR_COMPLETION_EVENT(xprtrdma_wc_li_done);
TRACE_EVENT(xprtrdma_frwr_alloc,
TP_PROTO(
@ -905,7 +903,7 @@ TRACE_EVENT(xprtrdma_frwr_alloc,
),
TP_fast_assign(
__entry->mr_id = mr->frwr.fr_mr->res.id;
__entry->mr_id = mr->mr_ibmr->res.id;
__entry->rc = rc;
),
@ -933,7 +931,7 @@ TRACE_EVENT(xprtrdma_frwr_dereg,
),
TP_fast_assign(
__entry->mr_id = mr->frwr.fr_mr->res.id;
__entry->mr_id = mr->mr_ibmr->res.id;
__entry->nents = mr->mr_nents;
__entry->handle = mr->mr_handle;
__entry->length = mr->mr_length;
@ -966,7 +964,7 @@ TRACE_EVENT(xprtrdma_frwr_sgerr,
),
TP_fast_assign(
__entry->mr_id = mr->frwr.fr_mr->res.id;
__entry->mr_id = mr->mr_ibmr->res.id;
__entry->addr = mr->mr_sg->dma_address;
__entry->dir = mr->mr_dir;
__entry->nents = sg_nents;
@ -996,7 +994,7 @@ TRACE_EVENT(xprtrdma_frwr_maperr,
),
TP_fast_assign(
__entry->mr_id = mr->frwr.fr_mr->res.id;
__entry->mr_id = mr->mr_ibmr->res.id;
__entry->addr = mr->mr_sg->dma_address;
__entry->dir = mr->mr_dir;
__entry->num_mapped = num_mapped;
@ -1010,11 +1008,12 @@ TRACE_EVENT(xprtrdma_frwr_maperr,
)
);
DEFINE_MR_EVENT(fastreg);
DEFINE_MR_EVENT(localinv);
DEFINE_MR_EVENT(reminv);
DEFINE_MR_EVENT(map);
DEFINE_ANON_MR_EVENT(unmap);
DEFINE_ANON_MR_EVENT(recycle);
TRACE_EVENT(xprtrdma_dma_maperr,
TP_PROTO(
@ -1248,22 +1247,19 @@ TRACE_EVENT(xprtrdma_cb_setup,
TP_ARGS(r_xprt, reqs),
TP_STRUCT__entry(
__field(const void *, r_xprt)
__field(unsigned int, reqs)
__string(addr, rpcrdma_addrstr(r_xprt))
__string(port, rpcrdma_portstr(r_xprt))
),
TP_fast_assign(
__entry->r_xprt = r_xprt;
__entry->reqs = reqs;
__assign_str(addr, rpcrdma_addrstr(r_xprt));
__assign_str(port, rpcrdma_portstr(r_xprt));
),
TP_printk("peer=[%s]:%s r_xprt=%p: %u reqs",
__get_str(addr), __get_str(port),
__entry->r_xprt, __entry->reqs
TP_printk("peer=[%s]:%s %u reqs",
__get_str(addr), __get_str(port), __entry->reqs
)
);

41
include/trace/events/sunrpc.h
View file

@ -1079,6 +1079,46 @@ TRACE_EVENT(xprt_transmit,
__entry->seqno, __entry->status)
);
TRACE_EVENT(xprt_retransmit,
TP_PROTO(
const struct rpc_rqst *rqst
),
TP_ARGS(rqst),
TP_STRUCT__entry(
__field(unsigned int, task_id)
__field(unsigned int, client_id)
__field(u32, xid)
__field(int, ntrans)
__field(int, version)
__string(progname,
rqst->rq_task->tk_client->cl_program->name)
__string(procedure,
rqst->rq_task->tk_msg.rpc_proc->p_name)
),
TP_fast_assign(
struct rpc_task *task = rqst->rq_task;
__entry->task_id = task->tk_pid;
__entry->client_id = task->tk_client ?
task->tk_client->cl_clid : -1;
__entry->xid = be32_to_cpu(rqst->rq_xid);
__entry->ntrans = rqst->rq_ntrans;
__assign_str(progname,
task->tk_client->cl_program->name)
__entry->version = task->tk_client->cl_vers;
__assign_str(procedure, task->tk_msg.rpc_proc->p_name)
),
TP_printk(
"task:%u@%u xid=0x%08x %sv%d %s ntrans=%d",
__entry->task_id, __entry->client_id, __entry->xid,
__get_str(progname), __entry->version, __get_str(procedure),
__entry->ntrans)
);
TRACE_EVENT(xprt_ping,
TP_PROTO(const struct rpc_xprt *xprt, int status),
@ -1141,7 +1181,6 @@ DECLARE_EVENT_CLASS(xprt_writelock_event,
DEFINE_WRITELOCK_EVENT(reserve_xprt);
DEFINE_WRITELOCK_EVENT(release_xprt);
DEFINE_WRITELOCK_EVENT(transmit_queued);
DECLARE_EVENT_CLASS(xprt_cong_event,
TP_PROTO(

12
net/sunrpc/clnt.c
View file

@ -1799,7 +1799,6 @@ call_allocate(struct rpc_task *task)
status = xprt->ops->buf_alloc(task);
trace_rpc_buf_alloc(task, status);
xprt_inject_disconnect(xprt);
if (status == 0)
return;
if (status != -ENOMEM) {
@ -2457,12 +2456,6 @@ call_decode(struct rpc_task *task)
task->tk_flags &= ~RPC_CALL_MAJORSEEN;
}
/*
* Ensure that we see all writes made by xprt_complete_rqst()
* before it changed req->rq_reply_bytes_recvd.
*/
smp_rmb();
/*
* Did we ever call xprt_complete_rqst()? If not, we should assume
* the message is incomplete.
@ -2471,6 +2464,11 @@ call_decode(struct rpc_task *task)
if (!req->rq_reply_bytes_recvd)
goto out;
/* Ensure that we see all writes made by xprt_complete_rqst()
* before it changed req->rq_reply_bytes_recvd.
*/
smp_rmb();
req->rq_rcv_buf.len = req->rq_private_buf.len;
trace_rpc_xdr_recvfrom(task, &req->rq_rcv_buf);

7
net/sunrpc/rpcb_clnt.c
View file

@ -344,13 +344,15 @@ static struct rpc_clnt *rpcb_create(struct net *net, const char *nodename,
const char *hostname,
struct sockaddr *srvaddr, size_t salen,
int proto, u32 version,
const struct cred *cred)
const struct cred *cred,
const struct rpc_timeout *timeo)
{
struct rpc_create_args args = {
.net = net,
.protocol = proto,
.address = srvaddr,
.addrsize = salen,
.timeout = timeo,
.servername = hostname,
.nodename = nodename,
.program = &rpcb_program,
@ -705,7 +707,8 @@ void rpcb_getport_async(struct rpc_task *task)
clnt->cl_nodename,
xprt->servername, sap, salen,
xprt->prot, bind_version,
clnt->cl_cred);
clnt->cl_cred,
task->tk_client->cl_timeout);
if (IS_ERR(rpcb_clnt)) {
status = PTR_ERR(rpcb_clnt);
goto bailout_nofree;

18
net/sunrpc/xprt.c
View file

@ -698,9 +698,9 @@ int xprt_adjust_timeout(struct rpc_rqst *req)
const struct rpc_timeout *to = req->rq_task->tk_client->cl_timeout;
int status = 0;
if (time_before(jiffies, req->rq_minortimeo))
return status;
if (time_before(jiffies, req->rq_majortimeo)) {
if (time_before(jiffies, req->rq_minortimeo))
return status;
if (to->to_exponential)
req->rq_timeout <<= 1;
else
@ -1352,6 +1352,7 @@ xprt_request_enqueue_transmit(struct rpc_task *task)
list_add_tail(&req->rq_xmit, &xprt->xmit_queue);
INIT_LIST_HEAD(&req->rq_xmit2);
out:
atomic_long_inc(&xprt->xmit_queuelen);
set_bit(RPC_TASK_NEED_XMIT, &task->tk_runstate);
spin_unlock(&xprt->queue_lock);
}
@ -1381,6 +1382,7 @@ xprt_request_dequeue_transmit_locked(struct rpc_task *task)
}
} else
list_del(&req->rq_xmit2);
atomic_long_dec(&req->rq_xprt->xmit_queuelen);
}
/**
@ -1469,8 +1471,6 @@ bool xprt_prepare_transmit(struct rpc_task *task)
struct rpc_xprt *xprt = req->rq_xprt;
if (!xprt_lock_write(xprt, task)) {
trace_xprt_transmit_queued(xprt, task);
/* Race breaker: someone may have transmitted us */
if (!test_bit(RPC_TASK_NEED_XMIT, &task->tk_runstate))
rpc_wake_up_queued_task_set_status(&xprt->sending,
@ -1483,7 +1483,10 @@ bool xprt_prepare_transmit(struct rpc_task *task)
void xprt_end_transmit(struct rpc_task *task)
{
xprt_release_write(task->tk_rqstp->rq_xprt, task);
struct rpc_xprt *xprt = task->tk_rqstp->rq_xprt;
xprt_inject_disconnect(xprt);
xprt_release_write(xprt, task);
}
/**
@ -1537,8 +1540,10 @@ xprt_request_transmit(struct rpc_rqst *req, struct rpc_task *snd_task)
return status;
}
if (is_retrans)
if (is_retrans) {
task->tk_client->cl_stats->rpcretrans++;
trace_xprt_retransmit(req);
}
xprt_inject_disconnect(xprt);
@ -1885,7 +1890,6 @@ void xprt_release(struct rpc_task *task)
spin_unlock(&xprt->transport_lock);
if (req->rq_buffer)
xprt->ops->buf_free(task);
xprt_inject_disconnect(xprt);
xdr_free_bvec(&req->rq_rcv_buf);
xdr_free_bvec(&req->rq_snd_buf);
if (req->rq_cred != NULL)

4
net/sunrpc/xprtrdma/backchannel.c
View file

@ -155,9 +155,11 @@ void xprt_rdma_bc_destroy(struct rpc_xprt *xprt, unsigned int reqs)
void xprt_rdma_bc_free_rqst(struct rpc_rqst *rqst)
{
struct rpcrdma_req *req = rpcr_to_rdmar(rqst);
struct rpcrdma_rep *rep = req->rl_reply;
struct rpc_xprt *xprt = rqst->rq_xprt;
struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
rpcrdma_recv_buffer_put(req->rl_reply);
rpcrdma_rep_put(&r_xprt->rx_buf, rep);
req->rl_reply = NULL;
spin_lock(&xprt->bc_pa_lock);

209
net/sunrpc/xprtrdma/frwr_ops.c
View file

@ -49,20 +49,13 @@
# define RPCDBG_FACILITY RPCDBG_TRANS
#endif
/**
* frwr_release_mr - Destroy one MR
* @mr: MR allocated by frwr_mr_init
*
*/
void frwr_release_mr(struct rpcrdma_mr *mr)
static void frwr_cid_init(struct rpcrdma_ep *ep,
struct rpcrdma_mr *mr)
{
int rc;
struct rpc_rdma_cid *cid = &mr->mr_cid;
rc = ib_dereg_mr(mr->frwr.fr_mr);
if (rc)
trace_xprtrdma_frwr_dereg(mr, rc);
kfree(mr->mr_sg);
kfree(mr);
cid->ci_queue_id = ep->re_attr.send_cq->res.id;
cid->ci_completion_id = mr->mr_ibmr->res.id;
}
static void frwr_mr_unmap(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr *mr)
@ -75,20 +68,22 @@ static void frwr_mr_unmap(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr *mr)
}
}
static void frwr_mr_recycle(struct rpcrdma_mr *mr)
/**
* frwr_mr_release - Destroy one MR
* @mr: MR allocated by frwr_mr_init
*
*/
void frwr_mr_release(struct rpcrdma_mr *mr)
{
struct rpcrdma_xprt *r_xprt = mr->mr_xprt;
int rc;
trace_xprtrdma_mr_recycle(mr);
frwr_mr_unmap(mr->mr_xprt, mr);
frwr_mr_unmap(r_xprt, mr);
spin_lock(&r_xprt->rx_buf.rb_lock);
list_del(&mr->mr_all);
r_xprt->rx_stats.mrs_recycled++;
spin_unlock(&r_xprt->rx_buf.rb_lock);
frwr_release_mr(mr);
rc = ib_dereg_mr(mr->mr_ibmr);
if (rc)
trace_xprtrdma_frwr_dereg(mr, rc);
kfree(mr->mr_sg);
kfree(mr);
}
static void frwr_mr_put(struct rpcrdma_mr *mr)
@ -144,10 +139,11 @@ int frwr_mr_init(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr *mr)
goto out_list_err;
mr->mr_xprt = r_xprt;
mr->frwr.fr_mr = frmr;
mr->mr_ibmr = frmr;
mr->mr_device = NULL;
INIT_LIST_HEAD(&mr->mr_list);
init_completion(&mr->frwr.fr_linv_done);
init_completion(&mr->mr_linv_done);
frwr_cid_init(ep, mr);
sg_init_table(sg, depth);
mr->mr_sg = sg;
@ -257,6 +253,7 @@ int frwr_query_device(struct rpcrdma_ep *ep, const struct ib_device *device)
ep->re_attr.cap.max_send_wr += 1; /* for ib_drain_sq */
ep->re_attr.cap.max_recv_wr = ep->re_max_requests;
ep->re_attr.cap.max_recv_wr += RPCRDMA_BACKWARD_WRS;
ep->re_attr.cap.max_recv_wr += RPCRDMA_MAX_RECV_BATCH;
ep->re_attr.cap.max_recv_wr += 1; /* for ib_drain_rq */
ep->re_max_rdma_segs =
@ -326,7 +323,7 @@ struct rpcrdma_mr_seg *frwr_map(struct rpcrdma_xprt *r_xprt,
goto out_dmamap_err;
mr->mr_device = ep->re_id->device;
ibmr = mr->frwr.fr_mr;
ibmr = mr->mr_ibmr;
n = ib_map_mr_sg(ibmr, mr->mr_sg, dma_nents, NULL, PAGE_SIZE);
if (n != dma_nents)
goto out_mapmr_err;
@ -336,7 +333,7 @@ struct rpcrdma_mr_seg *frwr_map(struct rpcrdma_xprt *r_xprt,
key = (u8)(ibmr->rkey & 0x000000FF);
ib_update_fast_reg_key(ibmr, ++key);
reg_wr = &mr->frwr.fr_regwr;
reg_wr = &mr->mr_regwr;
reg_wr->mr = ibmr;
reg_wr->key = ibmr->rkey;
reg_wr->access = writing ?
@ -364,29 +361,19 @@ struct rpcrdma_mr_seg *frwr_map(struct rpcrdma_xprt *r_xprt,
* @cq: completion queue
* @wc: WCE for a completed FastReg WR
*
* Each flushed MR gets destroyed after the QP has drained.
*/
static void frwr_wc_fastreg(struct ib_cq *cq, struct ib_wc *wc)
{
struct ib_cqe *cqe = wc->wr_cqe;
struct rpcrdma_frwr *frwr =
container_of(cqe, struct rpcrdma_frwr, fr_cqe);
struct rpcrdma_mr *mr = container_of(cqe, struct rpcrdma_mr, mr_cqe);
/* WARNING: Only wr_cqe and status are reliable at this point */
trace_xprtrdma_wc_fastreg(wc, &frwr->fr_cid);
/* The MR will get recycled when the associated req is retransmitted */
trace_xprtrdma_wc_fastreg(wc, &mr->mr_cid);
rpcrdma_flush_disconnect(cq->cq_context, wc);
}
static void frwr_cid_init(struct rpcrdma_ep *ep,
struct rpcrdma_frwr *frwr)
{
struct rpc_rdma_cid *cid = &frwr->fr_cid;
cid->ci_queue_id = ep->re_attr.send_cq->res.id;
cid->ci_completion_id = frwr->fr_mr->res.id;
}
/**
* frwr_send - post Send WRs containing the RPC Call message
* @r_xprt: controlling transport instance
@ -403,27 +390,36 @@ static void frwr_cid_init(struct rpcrdma_ep *ep,
*/
int frwr_send(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req)
{
struct ib_send_wr *post_wr, *send_wr = &req->rl_wr;
struct rpcrdma_ep *ep = r_xprt->rx_ep;
struct ib_send_wr *post_wr;
struct rpcrdma_mr *mr;
unsigned int num_wrs;
post_wr = &req->rl_wr;
num_wrs = 1;
post_wr = send_wr;
list_for_each_entry(mr, &req->rl_registered, mr_list) {
struct rpcrdma_frwr *frwr;
trace_xprtrdma_mr_fastreg(mr);
frwr = &mr->frwr;
frwr->fr_cqe.done = frwr_wc_fastreg;
frwr_cid_init(ep, frwr);
frwr->fr_regwr.wr.next = post_wr;
frwr->fr_regwr.wr.wr_cqe = &frwr->fr_cqe;
frwr->fr_regwr.wr.num_sge = 0;
frwr->fr_regwr.wr.opcode = IB_WR_REG_MR;
frwr->fr_regwr.wr.send_flags = 0;
post_wr = &frwr->fr_regwr.wr;
mr->mr_cqe.done = frwr_wc_fastreg;
mr->mr_regwr.wr.next = post_wr;
mr->mr_regwr.wr.wr_cqe = &mr->mr_cqe;
mr->mr_regwr.wr.num_sge = 0;
mr->mr_regwr.wr.opcode = IB_WR_REG_MR;
mr->mr_regwr.wr.send_flags = 0;
post_wr = &mr->mr_regwr.wr;
++num_wrs;
}
if ((kref_read(&req->rl_kref) > 1) || num_wrs > ep->re_send_count) {
send_wr->send_flags |= IB_SEND_SIGNALED;
ep->re_send_count = min_t(unsigned int, ep->re_send_batch,
num_wrs - ep->re_send_count);
} else {
send_wr->send_flags &= ~IB_SEND_SIGNALED;
ep->re_send_count -= num_wrs;
}
trace_xprtrdma_post_send(req);
return ib_post_send(ep->re_id->qp, post_wr, NULL);
}
@ -440,6 +436,7 @@ void frwr_reminv(struct rpcrdma_rep *rep, struct list_head *mrs)
list_for_each_entry(mr, mrs, mr_list)
if (mr->mr_handle == rep->rr_inv_rkey) {
list_del_init(&mr->mr_list);
trace_xprtrdma_mr_reminv(mr);
frwr_mr_put(mr);
break; /* only one invalidated MR per RPC */
}
@ -447,9 +444,7 @@ void frwr_reminv(struct rpcrdma_rep *rep, struct list_head *mrs)
static void frwr_mr_done(struct ib_wc *wc, struct rpcrdma_mr *mr)
{
if (wc->status != IB_WC_SUCCESS)
frwr_mr_recycle(mr);
else
if (likely(wc->status == IB_WC_SUCCESS))
frwr_mr_put(mr);
}
@ -462,12 +457,10 @@ static void frwr_mr_done(struct ib_wc *wc, struct rpcrdma_mr *mr)
static void frwr_wc_localinv(struct ib_cq *cq, struct ib_wc *wc)
{
struct ib_cqe *cqe = wc->wr_cqe;
struct rpcrdma_frwr *frwr =
container_of(cqe, struct rpcrdma_frwr, fr_cqe);
struct rpcrdma_mr *mr = container_of(frwr, struct rpcrdma_mr, frwr);
struct rpcrdma_mr *mr = container_of(cqe, struct rpcrdma_mr, mr_cqe);
/* WARNING: Only wr_cqe and status are reliable at this point */
trace_xprtrdma_wc_li(wc, &frwr->fr_cid);
trace_xprtrdma_wc_li(wc, &mr->mr_cid);
frwr_mr_done(wc, mr);
rpcrdma_flush_disconnect(cq->cq_context, wc);
@ -483,14 +476,12 @@ static void frwr_wc_localinv(struct ib_cq *cq, struct ib_wc *wc)
static void frwr_wc_localinv_wake(struct ib_cq *cq, struct ib_wc *wc)
{
struct ib_cqe *cqe = wc->wr_cqe;
struct rpcrdma_frwr *frwr =
container_of(cqe, struct rpcrdma_frwr, fr_cqe);
struct rpcrdma_mr *mr = container_of(frwr, struct rpcrdma_mr, frwr);
struct rpcrdma_mr *mr = container_of(cqe, struct rpcrdma_mr, mr_cqe);
/* WARNING: Only wr_cqe and status are reliable at this point */
trace_xprtrdma_wc_li_wake(wc, &frwr->fr_cid);
trace_xprtrdma_wc_li_wake(wc, &mr->mr_cid);
frwr_mr_done(wc, mr);
complete(&frwr->fr_linv_done);
complete(&mr->mr_linv_done);
rpcrdma_flush_disconnect(cq->cq_context, wc);
}
@ -511,7 +502,6 @@ void frwr_unmap_sync(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req)
struct ib_send_wr *first, **prev, *last;
struct rpcrdma_ep *ep = r_xprt->rx_ep;
const struct ib_send_wr *bad_wr;
struct rpcrdma_frwr *frwr;
struct rpcrdma_mr *mr;
int rc;
@ -520,35 +510,34 @@ void frwr_unmap_sync(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req)
* Chain the LOCAL_INV Work Requests and post them with
* a single ib_post_send() call.
*/
frwr = NULL;
prev = &first;
while ((mr = rpcrdma_mr_pop(&req->rl_registered))) {
trace_xprtrdma_mr_localinv(mr);
r_xprt->rx_stats.local_inv_needed++;
frwr = &mr->frwr;
frwr->fr_cqe.done = frwr_wc_localinv;
frwr_cid_init(ep, frwr);
last = &frwr->fr_invwr;
last = &mr->mr_invwr;
last->next = NULL;
last->wr_cqe = &frwr->fr_cqe;
last->wr_cqe = &mr->mr_cqe;
last->sg_list = NULL;
last->num_sge = 0;
last->opcode = IB_WR_LOCAL_INV;
last->send_flags = IB_SEND_SIGNALED;
last->ex.invalidate_rkey = mr->mr_handle;
last->wr_cqe->done = frwr_wc_localinv;
*prev = last;
prev = &last->next;
}
mr = container_of(last, struct rpcrdma_mr, mr_invwr);
/* Strong send queue ordering guarantees that when the
* last WR in the chain completes, all WRs in the chain
* are complete.
*/
frwr->fr_cqe.done = frwr_wc_localinv_wake;
reinit_completion(&frwr->fr_linv_done);
last->wr_cqe->done = frwr_wc_localinv_wake;
reinit_completion(&mr->mr_linv_done);
/* Transport disconnect drains the receive CQ before it
* replaces the QP. The RPC reply handler won't call us
@ -562,22 +551,12 @@ void frwr_unmap_sync(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req)
* not happen, so don't wait in that case.
*/
if (bad_wr != first)
wait_for_completion(&frwr->fr_linv_done);
wait_for_completion(&mr->mr_linv_done);
if (!rc)
return;
/* Recycle MRs in the LOCAL_INV chain that did not get posted.
*/
/* On error, the MRs get destroyed once the QP has drained. */
trace_xprtrdma_post_linv_err(req, rc);
while (bad_wr) {
frwr = container_of(bad_wr, struct rpcrdma_frwr,
fr_invwr);
mr = container_of(frwr, struct rpcrdma_mr, frwr);
bad_wr = bad_wr->next;
list_del_init(&mr->mr_list);
frwr_mr_recycle(mr);
}
}
/**
@ -589,20 +568,24 @@ void frwr_unmap_sync(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req)
static void frwr_wc_localinv_done(struct ib_cq *cq, struct ib_wc *wc)
{
struct ib_cqe *cqe = wc->wr_cqe;
struct rpcrdma_frwr *frwr =
container_of(cqe, struct rpcrdma_frwr, fr_cqe);
struct rpcrdma_mr *mr = container_of(frwr, struct rpcrdma_mr, frwr);
struct rpcrdma_rep *rep = mr->mr_req->rl_reply;
struct rpcrdma_mr *mr = container_of(cqe, struct rpcrdma_mr, mr_cqe);
struct rpcrdma_rep *rep;
/* WARNING: Only wr_cqe and status are reliable at this point */
trace_xprtrdma_wc_li_done(wc, &frwr->fr_cid);
frwr_mr_done(wc, mr);
trace_xprtrdma_wc_li_done(wc, &mr->mr_cid);
/* Ensure @rep is generated before frwr_mr_done */
/* Ensure that @rep is generated before the MR is released */
rep = mr->mr_req->rl_reply;
smp_rmb();
rpcrdma_complete_rqst(rep);
rpcrdma_flush_disconnect(cq->cq_context, wc);
if (wc->status != IB_WC_SUCCESS) {
if (rep)
rpcrdma_unpin_rqst(rep);
rpcrdma_flush_disconnect(cq->cq_context, wc);
return;
}
frwr_mr_put(mr);
rpcrdma_complete_rqst(rep);
}
/**
@ -619,33 +602,29 @@ void frwr_unmap_async(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req)
{
struct ib_send_wr *first, *last, **prev;
struct rpcrdma_ep *ep = r_xprt->rx_ep;
const struct ib_send_wr *bad_wr;
struct rpcrdma_frwr *frwr;
struct rpcrdma_mr *mr;
int rc;
/* Chain the LOCAL_INV Work Requests and post them with
* a single ib_post_send() call.
*/
frwr = NULL;
prev = &first;
while ((mr = rpcrdma_mr_pop(&req->rl_registered))) {
trace_xprtrdma_mr_localinv(mr);
r_xprt->rx_stats.local_inv_needed++;
frwr = &mr->frwr;
frwr->fr_cqe.done = frwr_wc_localinv;
frwr_cid_init(ep, frwr);
last = &frwr->fr_invwr;
last = &mr->mr_invwr;
last->next = NULL;
last->wr_cqe = &frwr->fr_cqe;
last->wr_cqe = &mr->mr_cqe;
last->sg_list = NULL;
last->num_sge = 0;
last->opcode = IB_WR_LOCAL_INV;
last->send_flags = IB_SEND_SIGNALED;
last->ex.invalidate_rkey = mr->mr_handle;
last->wr_cqe->done = frwr_wc_localinv;
*prev = last;
prev = &last->next;
}
@ -655,31 +634,23 @@ void frwr_unmap_async(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req)
* are complete. The last completion will wake up the
* RPC waiter.
*/
frwr->fr_cqe.done = frwr_wc_localinv_done;
last->wr_cqe->done = frwr_wc_localinv_done;
/* Transport disconnect drains the receive CQ before it
* replaces the QP. The RPC reply handler won't call us
* unless re_id->qp is a valid pointer.
*/
bad_wr = NULL;
rc = ib_post_send(ep->re_id->qp, first, &bad_wr);
rc = ib_post_send(ep->re_id->qp, first, NULL);
if (!rc)
return;
/* Recycle MRs in the LOCAL_INV chain that did not get posted.
*/
/* On error, the MRs get destroyed once the QP has drained. */
trace_xprtrdma_post_linv_err(req, rc);
while (bad_wr) {
frwr = container_of(bad_wr, struct rpcrdma_frwr, fr_invwr);
mr = container_of(frwr, struct rpcrdma_mr, frwr);
bad_wr = bad_wr->next;
frwr_mr_recycle(mr);
}
/* The final LOCAL_INV WR in the chain is supposed to
* do the wake. If it was never posted, the wake will
* not happen, so wake here in that case.
* do the wake. If it was never posted, the wake does
* not happen. Unpin the rqst in preparation for its
* retransmission.
*/
rpcrdma_complete_rqst(req->rl_reply);
rpcrdma_unpin_rqst(req->rl_reply);
}

39
net/sunrpc/xprtrdma/rpc_rdma.c
View file

@ -1326,9 +1326,35 @@ rpcrdma_decode_error(struct rpcrdma_xprt *r_xprt, struct rpcrdma_rep *rep,
return -EIO;
}
/* Perform XID lookup, reconstruction of the RPC reply, and
* RPC completion while holding the transport lock to ensure
* the rep, rqst, and rq_task pointers remain stable.
/**
* rpcrdma_unpin_rqst - Release rqst without completing it
* @rep: RPC/RDMA Receive context
*
* This is done when a connection is lost so that a Reply
* can be dropped and its matching Call can be subsequently
* retransmitted on a new connection.
*/
void rpcrdma_unpin_rqst(struct rpcrdma_rep *rep)
{
struct rpc_xprt *xprt = &rep->rr_rxprt->rx_xprt;
struct rpc_rqst *rqst = rep->rr_rqst;
struct rpcrdma_req *req = rpcr_to_rdmar(rqst);
req->rl_reply = NULL;
rep->rr_rqst = NULL;
spin_lock(&xprt->queue_lock);
xprt_unpin_rqst(rqst);
spin_unlock(&xprt->queue_lock);
}
/**
* rpcrdma_complete_rqst - Pass completed rqst back to RPC
* @rep: RPC/RDMA Receive context
*
* Reconstruct the RPC reply and complete the transaction
* while @rqst is still pinned to ensure the rep, rqst, and
* rq_task pointers remain stable.
*/
void rpcrdma_complete_rqst(struct rpcrdma_rep *rep)
{
@ -1430,13 +1456,14 @@ void rpcrdma_reply_handler(struct rpcrdma_rep *rep)
credits = 1; /* don't deadlock */
else if (credits > r_xprt->rx_ep->re_max_requests)
credits = r_xprt->rx_ep->re_max_requests;
rpcrdma_post_recvs(r_xprt, credits + (buf->rb_bc_srv_max_requests << 1),
false);
if (buf->rb_credits != credits)
rpcrdma_update_cwnd(r_xprt, credits);
rpcrdma_post_recvs(r_xprt, false);
req = rpcr_to_rdmar(rqst);
if (unlikely(req->rl_reply))
rpcrdma_recv_buffer_put(req->rl_reply);
rpcrdma_rep_put(buf, req->rl_reply);
req->rl_reply = rep;
rep->rr_rqst = rqst;
@ -1464,5 +1491,5 @@ void rpcrdma_reply_handler(struct rpcrdma_rep *rep)
trace_xprtrdma_reply_short_err(rep);
out:
rpcrdma_recv_buffer_put(rep);
rpcrdma_rep_put(buf, rep);
}

6
net/sunrpc/xprtrdma/transport.c
View file

@ -262,8 +262,10 @@ xprt_rdma_connect_worker(struct work_struct *work)
* xprt_rdma_inject_disconnect - inject a connection fault
* @xprt: transport context
*
* If @xprt is connected, disconnect it to simulate spurious connection
* loss.
* If @xprt is connected, disconnect it to simulate spurious
* connection loss. Caller must hold @xprt's send lock to
* ensure that data structures and hardware resources are
* stable during the rdma_disconnect() call.
*/
static void
xprt_rdma_inject_disconnect(struct rpc_xprt *xprt)

131
net/sunrpc/xprtrdma/verbs.c
View file

@ -101,6 +101,12 @@ static void rpcrdma_xprt_drain(struct rpcrdma_xprt *r_xprt)
struct rpcrdma_ep *ep = r_xprt->rx_ep;
struct rdma_cm_id *id = ep->re_id;
/* Wait for rpcrdma_post_recvs() to leave its critical
* section.
*/
if (atomic_inc_return(&ep->re_receiving) > 1)
wait_for_completion(&ep->re_done);
/* Flush Receives, then wait for deferred Reply work
* to complete.
*/
@ -114,22 +120,6 @@ static void rpcrdma_xprt_drain(struct rpcrdma_xprt *r_xprt)
rpcrdma_ep_put(ep);
}
/**
* rpcrdma_qp_event_handler - Handle one QP event (error notification)
* @event: details of the event
* @context: ep that owns QP where event occurred
*
* Called from the RDMA provider (device driver) possibly in an interrupt
* context. The QP is always destroyed before the ID, so the ID will be
* reliably available when this handler is invoked.
*/
static void rpcrdma_qp_event_handler(struct ib_event *event, void *context)
{
struct rpcrdma_ep *ep = context;
trace_xprtrdma_qp_event(ep, event);
}
/* Ensure xprt_force_disconnect() is invoked exactly once when a
* connection is closed or lost. (The important thing is it needs
* to be invoked "at least" once).
@ -205,7 +195,7 @@ static void rpcrdma_wc_receive(struct ib_cq *cq, struct ib_wc *wc)
out_flushed:
rpcrdma_flush_disconnect(r_xprt, wc);
rpcrdma_rep_destroy(rep);
rpcrdma_rep_put(&r_xprt->rx_buf, rep);
}
static void rpcrdma_update_cm_private(struct rpcrdma_ep *ep,
@ -414,6 +404,7 @@ static int rpcrdma_ep_create(struct rpcrdma_xprt *r_xprt)
__module_get(THIS_MODULE);
device = id->device;
ep->re_id = id;
reinit_completion(&ep->re_done);
ep->re_max_requests = r_xprt->rx_xprt.max_reqs;
ep->re_inline_send = xprt_rdma_max_inline_write;
@ -424,8 +415,6 @@ static int rpcrdma_ep_create(struct rpcrdma_xprt *r_xprt)
r_xprt->rx_buf.rb_max_requests = cpu_to_be32(ep->re_max_requests);
ep->re_attr.event_handler = rpcrdma_qp_event_handler;
ep->re_attr.qp_context = ep;
ep->re_attr.srq = NULL;
ep->re_attr.cap.max_inline_data = 0;
ep->re_attr.sq_sig_type = IB_SIGNAL_REQ_WR;
@ -535,7 +524,7 @@ int rpcrdma_xprt_connect(struct rpcrdma_xprt *r_xprt)
* outstanding Receives.
*/
rpcrdma_ep_get(ep);
rpcrdma_post_recvs(r_xprt, true);
rpcrdma_post_recvs(r_xprt, 1, true);
rc = rdma_connect(ep->re_id, &ep->re_remote_cma);
if (rc)
@ -954,13 +943,11 @@ static void rpcrdma_reqs_reset(struct rpcrdma_xprt *r_xprt)
rpcrdma_req_reset(req);
}
/* No locking needed here. This function is called only by the
* Receive completion handler.
*/
static noinline
struct rpcrdma_rep *rpcrdma_rep_create(struct rpcrdma_xprt *r_xprt,
bool temp)
{
struct rpcrdma_buffer *buf = &r_xprt->rx_buf;
struct rpcrdma_rep *rep;
rep = kzalloc(sizeof(*rep), GFP_KERNEL);
@ -987,7 +974,10 @@ struct rpcrdma_rep *rpcrdma_rep_create(struct rpcrdma_xprt *r_xprt,
rep->rr_recv_wr.sg_list = &rep->rr_rdmabuf->rg_iov;
rep->rr_recv_wr.num_sge = 1;
rep->rr_temp = temp;
list_add(&rep->rr_all, &r_xprt->rx_buf.rb_all_reps);
spin_lock(&buf->rb_lock);
list_add(&rep->rr_all, &buf->rb_all_reps);
spin_unlock(&buf->rb_lock);
return rep;
out_free_regbuf:
@ -998,16 +988,23 @@ struct rpcrdma_rep *rpcrdma_rep_create(struct rpcrdma_xprt *r_xprt,
return NULL;
}
/* No locking needed here. This function is invoked only by the
* Receive completion handler, or during transport shutdown.
*/
static void rpcrdma_rep_destroy(struct rpcrdma_rep *rep)
static void rpcrdma_rep_free(struct rpcrdma_rep *rep)
{
list_del(&rep->rr_all);
rpcrdma_regbuf_free(rep->rr_rdmabuf);
kfree(rep);
}
static void rpcrdma_rep_destroy(struct rpcrdma_rep *rep)
{
struct rpcrdma_buffer *buf = &rep->rr_rxprt->rx_buf;
spin_lock(&buf->rb_lock);
list_del(&rep->rr_all);
spin_unlock(&buf->rb_lock);
rpcrdma_rep_free(rep);
}
static struct rpcrdma_rep *rpcrdma_rep_get_locked(struct rpcrdma_buffer *buf)
{
struct llist_node *node;
@ -1019,12 +1016,21 @@ static struct rpcrdma_rep *rpcrdma_rep_get_locked(struct rpcrdma_buffer *buf)
return llist_entry(node, struct rpcrdma_rep, rr_node);
}
static void rpcrdma_rep_put(struct rpcrdma_buffer *buf,
struct rpcrdma_rep *rep)
/**
* rpcrdma_rep_put - Release rpcrdma_rep back to free list
* @buf: buffer pool
* @rep: rep to release
*
*/
void rpcrdma_rep_put(struct rpcrdma_buffer *buf, struct rpcrdma_rep *rep)
{
llist_add(&rep->rr_node, &buf->rb_free_reps);
}
/* Caller must ensure the QP is quiescent (RQ is drained) before
* invoking this function, to guarantee rb_all_reps is not
* changing.
*/
static void rpcrdma_reps_unmap(struct rpcrdma_xprt *r_xprt)
{
struct rpcrdma_buffer *buf = &r_xprt->rx_buf;
@ -1032,7 +1038,7 @@ static void rpcrdma_reps_unmap(struct rpcrdma_xprt *r_xprt)
list_for_each_entry(rep, &buf->rb_all_reps, rr_all) {
rpcrdma_regbuf_dma_unmap(rep->rr_rdmabuf);
rep->rr_temp = true;
rep->rr_temp = true; /* Mark this rep for destruction */
}
}
@ -1040,8 +1046,18 @@ static void rpcrdma_reps_destroy(struct rpcrdma_buffer *buf)
{
struct rpcrdma_rep *rep;
while ((rep = rpcrdma_rep_get_locked(buf)) != NULL)
rpcrdma_rep_destroy(rep);
spin_lock(&buf->rb_lock);
while ((rep = list_first_entry_or_null(&buf->rb_all_reps,
struct rpcrdma_rep,
rr_all)) != NULL) {
list_del(&rep->rr_all);
spin_unlock(&buf->rb_lock);
rpcrdma_rep_free(rep);
spin_lock(&buf->rb_lock);
}
spin_unlock(&buf->rb_lock);
}
/**
@ -1104,7 +1120,7 @@ void rpcrdma_req_destroy(struct rpcrdma_req *req)
list_del(&mr->mr_all);
spin_unlock(&buf->rb_lock);
frwr_release_mr(mr);
frwr_mr_release(mr);
}
rpcrdma_regbuf_free(req->rl_recvbuf);
@ -1135,7 +1151,7 @@ static void rpcrdma_mrs_destroy(struct rpcrdma_xprt *r_xprt)
list_del(&mr->mr_all);
spin_unlock(&buf->rb_lock);
frwr_release_mr(mr);
frwr_mr_release(mr);
spin_lock(&buf->rb_lock);
}
@ -1221,17 +1237,6 @@ void rpcrdma_buffer_put(struct rpcrdma_buffer *buffers, struct rpcrdma_req *req)
spin_unlock(&buffers->rb_lock);
}
/**
* rpcrdma_recv_buffer_put - Release rpcrdma_rep back to free list
* @rep: rep to release
*
* Used after error conditions.
*/
void rpcrdma_recv_buffer_put(struct rpcrdma_rep *rep)
{
rpcrdma_rep_put(&rep->rr_rxprt->rx_buf, rep);
}
/* Returns a pointer to a rpcrdma_regbuf object, or NULL.
*
* xprtrdma uses a regbuf for posting an outgoing RDMA SEND, or for
@ -1342,21 +1347,7 @@ static void rpcrdma_regbuf_free(struct rpcrdma_regbuf *rb)
*/
int rpcrdma_post_sends(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req)
{
struct ib_send_wr *send_wr = &req->rl_wr;
struct rpcrdma_ep *ep = r_xprt->rx_ep;
int rc;
if (!ep->re_send_count || kref_read(&req->rl_kref) > 1) {
send_wr->send_flags |= IB_SEND_SIGNALED;
ep->re_send_count = ep->re_send_batch;
} else {
send_wr->send_flags &= ~IB_SEND_SIGNALED;
--ep->re_send_count;
}
trace_xprtrdma_post_send(req);
rc = frwr_send(r_xprt, req);
if (rc)
if (frwr_send(r_xprt, req))
return -ENOTCONN;
return 0;
}
@ -1364,27 +1355,30 @@ int rpcrdma_post_sends(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req)
/**
* rpcrdma_post_recvs - Refill the Receive Queue
* @r_xprt: controlling transport instance
* @temp: mark Receive buffers to be deleted after use
* @needed: current credit grant
* @temp: mark Receive buffers to be deleted after one use
*
*/
void rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, bool temp)
void rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, int needed, bool temp)
{
struct rpcrdma_buffer *buf = &r_xprt->rx_buf;
struct rpcrdma_ep *ep = r_xprt->rx_ep;
struct ib_recv_wr *wr, *bad_wr;
struct rpcrdma_rep *rep;
int needed, count, rc;
int count, rc;
rc = 0;
count = 0;
needed = buf->rb_credits + (buf->rb_bc_srv_max_requests << 1);
if (likely(ep->re_receive_count > needed))
goto out;
needed -= ep->re_receive_count;
if (!temp)
needed += RPCRDMA_MAX_RECV_BATCH;
if (atomic_inc_return(&ep->re_receiving) > 1)
goto out;
/* fast path: all needed reps can be found on the free list */
wr = NULL;
while (needed) {
@ -1410,6 +1404,9 @@ void rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, bool temp)
rc = ib_post_recv(ep->re_id->qp, wr,
(const struct ib_recv_wr **)&bad_wr);
if (atomic_dec_return(&ep->re_receiving) > 0)
complete(&ep->re_done);
out:
trace_xprtrdma_post_recvs(r_xprt, count, rc);
if (rc) {
@ -1418,7 +1415,7 @@ void rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, bool temp)
rep = container_of(wr, struct rpcrdma_rep, rr_recv_wr);
wr = wr->next;
rpcrdma_recv_buffer_put(rep);
rpcrdma_rep_put(buf, rep);
--count;
}
}

29
net/sunrpc/xprtrdma/xprt_rdma.h
View file

@ -83,6 +83,7 @@ struct rpcrdma_ep {
unsigned int re_max_inline_recv;
int re_async_rc;
int re_connect_status;
atomic_t re_receiving;
atomic_t re_force_disconnect;
struct ib_qp_init_attr re_attr;
wait_queue_head_t re_connect_wait;
@ -228,31 +229,28 @@ struct rpcrdma_sendctx {
* An external memory region is any buffer or page that is registered
* on the fly (ie, not pre-registered).
*/
struct rpcrdma_frwr {
struct ib_mr *fr_mr;
struct ib_cqe fr_cqe;
struct rpc_rdma_cid fr_cid;
struct completion fr_linv_done;
union {
struct ib_reg_wr fr_regwr;
struct ib_send_wr fr_invwr;
};
};
struct rpcrdma_req;
struct rpcrdma_mr {
struct list_head mr_list;
struct rpcrdma_req *mr_req;
struct ib_mr *mr_ibmr;
struct ib_device *mr_device;
struct scatterlist *mr_sg;
int mr_nents;
enum dma_data_direction mr_dir;
struct rpcrdma_frwr frwr;
struct ib_cqe mr_cqe;
struct completion mr_linv_done;
union {
struct ib_reg_wr mr_regwr;
struct ib_send_wr mr_invwr;
};
struct rpcrdma_xprt *mr_xprt;
u32 mr_handle;
u32 mr_length;
u64 mr_offset;
struct list_head mr_all;
struct rpc_rdma_cid mr_cid;
};
/*
@ -461,7 +459,7 @@ int rpcrdma_xprt_connect(struct rpcrdma_xprt *r_xprt);
void rpcrdma_xprt_disconnect(struct rpcrdma_xprt *r_xprt);
int rpcrdma_post_sends(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req);
void rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, bool temp);
void rpcrdma_post_recvs(struct rpcrdma_xprt *r_xprt, int needed, bool temp);
/*
* Buffer calls - xprtrdma/verbs.c
@ -480,7 +478,7 @@ void rpcrdma_mrs_refresh(struct rpcrdma_xprt *r_xprt);
struct rpcrdma_req *rpcrdma_buffer_get(struct rpcrdma_buffer *);
void rpcrdma_buffer_put(struct rpcrdma_buffer *buffers,
struct rpcrdma_req *req);
void rpcrdma_recv_buffer_put(struct rpcrdma_rep *);
void rpcrdma_rep_put(struct rpcrdma_buffer *buf, struct rpcrdma_rep *rep);
bool rpcrdma_regbuf_realloc(struct rpcrdma_regbuf *rb, size_t size,
gfp_t flags);
@ -527,7 +525,7 @@ rpcrdma_data_dir(bool writing)
void frwr_reset(struct rpcrdma_req *req);
int frwr_query_device(struct rpcrdma_ep *ep, const struct ib_device *device);
int frwr_mr_init(struct rpcrdma_xprt *r_xprt, struct rpcrdma_mr *mr);
void frwr_release_mr(struct rpcrdma_mr *mr);
void frwr_mr_release(struct rpcrdma_mr *mr);
struct rpcrdma_mr_seg *frwr_map(struct rpcrdma_xprt *r_xprt,
struct rpcrdma_mr_seg *seg,
int nsegs, bool writing, __be32 xid,
@ -560,6 +558,7 @@ int rpcrdma_marshal_req(struct rpcrdma_xprt *r_xprt, struct rpc_rqst *rqst);
void rpcrdma_set_max_header_sizes(struct rpcrdma_ep *ep);
void rpcrdma_reset_cwnd(struct rpcrdma_xprt *r_xprt);
void rpcrdma_complete_rqst(struct rpcrdma_rep *rep);
void rpcrdma_unpin_rqst(struct rpcrdma_rep *rep);
void rpcrdma_reply_handler(struct rpcrdma_rep *rep);
static inline void rpcrdma_set_xdrlen(struct xdr_buf *xdr, size_t len)

9
net/sunrpc/xprtsock.c
View file

@ -558,6 +558,10 @@ xs_read_stream_call(struct sock_xprt *transport, struct msghdr *msg, int flags)
struct rpc_rqst *req;
ssize_t ret;
/* Is this transport associated with the backchannel? */
if (!xprt->bc_serv)
return -ESHUTDOWN;
/* Look up and lock the request corresponding to the given XID */
req = xprt_lookup_bc_request(xprt, transport->recv.xid);
if (!req) {
@ -1018,6 +1022,7 @@ static int xs_tcp_send_request(struct rpc_rqst *req)
* to cope with writespace callbacks arriving _after_ we have
* called sendmsg(). */
req->rq_xtime = ktime_get();
tcp_sock_set_cork(transport->inet, true);
while (1) {
status = xprt_sock_sendmsg(transport->sock, &msg, xdr,
transport->xmit.offset, rm, &sent);
@ -1032,6 +1037,8 @@ static int xs_tcp_send_request(struct rpc_rqst *req)
if (likely(req->rq_bytes_sent >= msglen)) {
req->rq_xmit_bytes_sent += transport->xmit.offset;
transport->xmit.offset = 0;
if (atomic_long_read(&xprt->xmit_queuelen) == 1)
tcp_sock_set_cork(transport->inet, false);
return 0;
}
@ -2163,6 +2170,7 @@ static int xs_tcp_finish_connecting(struct rpc_xprt *xprt, struct socket *sock)
}
xs_tcp_set_socket_timeouts(xprt, sock);
tcp_sock_set_nodelay(sk);
write_lock_bh(&sk->sk_callback_lock);
@ -2177,7 +2185,6 @@ static int xs_tcp_finish_connecting(struct rpc_xprt *xprt, struct socket *sock)
/* socket options */
sock_reset_flag(sk, SOCK_LINGER);
tcp_sk(sk)->nonagle |= TCP_NAGLE_OFF;
xprt_clear_connected(xprt);