2014-09-26 17:58:48 +00:00
|
|
|
/*
|
|
|
|
* Copyright (c) 2014 Anna Schumaker <Anna.Schumaker@Netapp.com>
|
|
|
|
*/
|
|
|
|
#include <linux/fs.h>
|
|
|
|
#include <linux/sunrpc/sched.h>
|
|
|
|
#include <linux/nfs.h>
|
|
|
|
#include <linux/nfs3.h>
|
|
|
|
#include <linux/nfs4.h>
|
|
|
|
#include <linux/nfs_xdr.h>
|
|
|
|
#include <linux/nfs_fs.h>
|
|
|
|
#include "nfs4_fs.h"
|
|
|
|
#include "nfs42.h"
|
2015-06-23 11:51:56 +00:00
|
|
|
#include "iostat.h"
|
|
|
|
#include "pnfs.h"
|
|
|
|
#include "internal.h"
|
|
|
|
|
|
|
|
#define NFSDBG_FACILITY NFSDBG_PNFS
|
2014-09-26 17:58:48 +00:00
|
|
|
|
|
|
|
static int nfs42_set_rw_stateid(nfs4_stateid *dst, struct file *file,
|
|
|
|
fmode_t fmode)
|
|
|
|
{
|
|
|
|
struct nfs_open_context *open;
|
|
|
|
struct nfs_lock_context *lock;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
open = get_nfs_open_context(nfs_file_open_context(file));
|
|
|
|
lock = nfs_get_lock_context(open);
|
|
|
|
if (IS_ERR(lock)) {
|
|
|
|
put_nfs_open_context(open);
|
|
|
|
return PTR_ERR(lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = nfs4_set_rw_stateid(dst, open, lock, fmode);
|
|
|
|
|
|
|
|
nfs_put_lock_context(lock);
|
|
|
|
put_nfs_open_context(open);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2014-11-25 18:18:15 +00:00
|
|
|
static int _nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
|
|
|
|
loff_t offset, loff_t len)
|
|
|
|
{
|
|
|
|
struct inode *inode = file_inode(filep);
|
2015-03-16 18:06:23 +00:00
|
|
|
struct nfs_server *server = NFS_SERVER(inode);
|
2014-11-25 18:18:15 +00:00
|
|
|
struct nfs42_falloc_args args = {
|
|
|
|
.falloc_fh = NFS_FH(inode),
|
|
|
|
.falloc_offset = offset,
|
|
|
|
.falloc_length = len,
|
2015-03-16 18:06:23 +00:00
|
|
|
.falloc_bitmask = server->cache_consistency_bitmask,
|
|
|
|
};
|
|
|
|
struct nfs42_falloc_res res = {
|
|
|
|
.falloc_server = server,
|
2014-11-25 18:18:15 +00:00
|
|
|
};
|
|
|
|
int status;
|
|
|
|
|
|
|
|
msg->rpc_argp = &args;
|
|
|
|
msg->rpc_resp = &res;
|
|
|
|
|
|
|
|
status = nfs42_set_rw_stateid(&args.falloc_stateid, filep, FMODE_WRITE);
|
|
|
|
if (status)
|
|
|
|
return status;
|
|
|
|
|
2015-03-16 18:06:23 +00:00
|
|
|
res.falloc_fattr = nfs_alloc_fattr();
|
|
|
|
if (!res.falloc_fattr)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
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);
|
|
|
|
|
|
|
|
kfree(res.falloc_fattr);
|
|
|
|
return status;
|
2014-11-25 18:18:15 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
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 nfs4_exception exception = { };
|
|
|
|
int err;
|
|
|
|
|
|
|
|
do {
|
|
|
|
err = _nfs42_proc_fallocate(msg, filep, offset, len);
|
|
|
|
if (err == -ENOTSUPP)
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
err = nfs4_handle_exception(server, err, &exception);
|
|
|
|
} while (exception.retry);
|
|
|
|
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
int nfs42_proc_allocate(struct file *filep, loff_t offset, loff_t len)
|
|
|
|
{
|
|
|
|
struct rpc_message msg = {
|
|
|
|
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ALLOCATE],
|
|
|
|
};
|
|
|
|
struct inode *inode = file_inode(filep);
|
|
|
|
int err;
|
|
|
|
|
|
|
|
if (!nfs_server_capable(inode, NFS_CAP_ALLOCATE))
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
|
2015-03-16 18:06:24 +00:00
|
|
|
mutex_lock(&inode->i_mutex);
|
|
|
|
|
2014-11-25 18:18:15 +00:00
|
|
|
err = nfs42_proc_fallocate(&msg, filep, offset, len);
|
|
|
|
if (err == -EOPNOTSUPP)
|
|
|
|
NFS_SERVER(inode)->caps &= ~NFS_CAP_ALLOCATE;
|
2015-03-16 18:06:24 +00:00
|
|
|
|
|
|
|
mutex_unlock(&inode->i_mutex);
|
2014-11-25 18:18:15 +00:00
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
2014-11-25 18:18:16 +00:00
|
|
|
int nfs42_proc_deallocate(struct file *filep, loff_t offset, loff_t len)
|
|
|
|
{
|
|
|
|
struct rpc_message msg = {
|
|
|
|
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DEALLOCATE],
|
|
|
|
};
|
|
|
|
struct inode *inode = file_inode(filep);
|
|
|
|
int err;
|
|
|
|
|
|
|
|
if (!nfs_server_capable(inode, NFS_CAP_DEALLOCATE))
|
|
|
|
return -EOPNOTSUPP;
|
|
|
|
|
2015-03-16 18:06:23 +00:00
|
|
|
nfs_wb_all(inode);
|
2015-03-16 18:06:24 +00:00
|
|
|
mutex_lock(&inode->i_mutex);
|
|
|
|
|
2014-11-25 18:18:16 +00:00
|
|
|
err = nfs42_proc_fallocate(&msg, filep, offset, len);
|
2015-03-16 18:06:23 +00:00
|
|
|
if (err == 0)
|
|
|
|
truncate_pagecache_range(inode, offset, (offset + len) -1);
|
2014-11-25 18:18:16 +00:00
|
|
|
if (err == -EOPNOTSUPP)
|
|
|
|
NFS_SERVER(inode)->caps &= ~NFS_CAP_DEALLOCATE;
|
2015-03-16 18:06:24 +00:00
|
|
|
|
|
|
|
mutex_unlock(&inode->i_mutex);
|
2014-11-25 18:18:16 +00:00
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
2014-09-26 17:58:48 +00:00
|
|
|
loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence)
|
|
|
|
{
|
|
|
|
struct inode *inode = file_inode(filep);
|
|
|
|
struct nfs42_seek_args args = {
|
|
|
|
.sa_fh = NFS_FH(inode),
|
|
|
|
.sa_offset = offset,
|
|
|
|
.sa_what = (whence == SEEK_HOLE) ?
|
|
|
|
NFS4_CONTENT_HOLE : NFS4_CONTENT_DATA,
|
|
|
|
};
|
|
|
|
struct nfs42_seek_res res;
|
|
|
|
struct rpc_message msg = {
|
|
|
|
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEEK],
|
|
|
|
.rpc_argp = &args,
|
|
|
|
.rpc_resp = &res,
|
|
|
|
};
|
|
|
|
struct nfs_server *server = NFS_SERVER(inode);
|
|
|
|
int status;
|
|
|
|
|
2014-10-23 18:00:54 +00:00
|
|
|
if (!nfs_server_capable(inode, NFS_CAP_SEEK))
|
2014-09-26 17:58:48 +00:00
|
|
|
return -ENOTSUPP;
|
|
|
|
|
|
|
|
status = nfs42_set_rw_stateid(&args.sa_stateid, filep, FMODE_READ);
|
|
|
|
if (status)
|
|
|
|
return status;
|
|
|
|
|
|
|
|
nfs_wb_all(inode);
|
|
|
|
status = nfs4_call_sync(server->client, server, &msg,
|
|
|
|
&args.seq_args, &res.seq_res, 0);
|
|
|
|
if (status == -ENOTSUPP)
|
|
|
|
server->caps &= ~NFS_CAP_SEEK;
|
|
|
|
if (status)
|
|
|
|
return status;
|
|
|
|
|
|
|
|
return vfs_setpos(filep, res.sr_offset, inode->i_sb->s_maxbytes);
|
|
|
|
}
|
2015-06-23 11:51:55 +00:00
|
|
|
|
2015-06-23 11:51:56 +00:00
|
|
|
static void
|
|
|
|
nfs42_layoutstat_prepare(struct rpc_task *task, void *calldata)
|
|
|
|
{
|
|
|
|
struct nfs42_layoutstat_data *data = calldata;
|
|
|
|
struct nfs_server *server = NFS_SERVER(data->args.inode);
|
|
|
|
|
|
|
|
nfs41_setup_sequence(nfs4_get_session(server), &data->args.seq_args,
|
|
|
|
&data->res.seq_res, task);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
nfs42_layoutstat_done(struct rpc_task *task, void *calldata)
|
|
|
|
{
|
|
|
|
struct nfs42_layoutstat_data *data = calldata;
|
|
|
|
|
|
|
|
if (!nfs4_sequence_done(task, &data->res.seq_res))
|
|
|
|
return;
|
|
|
|
|
|
|
|
/* well, we don't care about errors at all! */
|
|
|
|
if (task->tk_status)
|
|
|
|
dprintk("%s server returns %d\n", __func__, task->tk_status);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
nfs42_layoutstat_release(void *calldata)
|
|
|
|
{
|
|
|
|
struct nfs42_layoutstat_data *data = calldata;
|
2015-06-23 11:51:57 +00:00
|
|
|
struct nfs_server *nfss = NFS_SERVER(data->args.inode);
|
|
|
|
|
|
|
|
if (nfss->pnfs_curr_ld->cleanup_layoutstats)
|
|
|
|
nfss->pnfs_curr_ld->cleanup_layoutstats(data);
|
2015-06-23 11:51:56 +00:00
|
|
|
|
|
|
|
pnfs_put_layout_hdr(NFS_I(data->args.inode)->layout);
|
2015-06-23 11:52:03 +00:00
|
|
|
smp_mb__before_atomic();
|
|
|
|
clear_bit(NFS_INO_LAYOUTSTATS, &NFS_I(data->args.inode)->flags);
|
|
|
|
smp_mb__after_atomic();
|
2015-06-23 11:51:56 +00:00
|
|
|
nfs_iput_and_deactive(data->inode);
|
|
|
|
kfree(data->args.devinfo);
|
|
|
|
kfree(data);
|
|
|
|
}
|
|
|
|
|
2015-06-23 11:51:55 +00:00
|
|
|
static const struct rpc_call_ops nfs42_layoutstat_ops = {
|
2015-06-23 11:51:56 +00:00
|
|
|
.rpc_call_prepare = nfs42_layoutstat_prepare,
|
|
|
|
.rpc_call_done = nfs42_layoutstat_done,
|
|
|
|
.rpc_release = nfs42_layoutstat_release,
|
2015-06-23 11:51:55 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
int nfs42_proc_layoutstats_generic(struct nfs_server *server,
|
|
|
|
struct nfs42_layoutstat_data *data)
|
|
|
|
{
|
|
|
|
struct rpc_message msg = {
|
|
|
|
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTSTATS],
|
|
|
|
.rpc_argp = &data->args,
|
|
|
|
.rpc_resp = &data->res,
|
|
|
|
};
|
|
|
|
struct rpc_task_setup task_setup = {
|
|
|
|
.rpc_client = server->client,
|
|
|
|
.rpc_message = &msg,
|
|
|
|
.callback_ops = &nfs42_layoutstat_ops,
|
|
|
|
.callback_data = data,
|
|
|
|
.flags = RPC_TASK_ASYNC,
|
|
|
|
};
|
|
|
|
struct rpc_task *task;
|
|
|
|
|
2015-06-23 11:51:56 +00:00
|
|
|
data->inode = nfs_igrab_and_active(data->args.inode);
|
|
|
|
if (!data->inode) {
|
|
|
|
nfs42_layoutstat_release(data);
|
|
|
|
return -EAGAIN;
|
|
|
|
}
|
2015-06-23 11:51:55 +00:00
|
|
|
nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0);
|
|
|
|
task = rpc_run_task(&task_setup);
|
|
|
|
if (IS_ERR(task))
|
|
|
|
return PTR_ERR(task);
|
|
|
|
return 0;
|
|
|
|
}
|