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NFS: Invoke nlmclnt_init during NFS mount processing 

Cache an appropriate nlm_host structure in the NFS client's mount point
metadata for later use.

Note that there is no need to set NFS_MOUNT_NONLM in the error case -- if
nfs_start_lockd() returns a non-zero value, its callers ensure that the
mount request fails outright.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Chuck Lever 2008-01-11 17:09:52 -05:00 committed by Trond Myklebust
parent 52c4044d00
commit 9289e7f91a
2 changed files with 21 additions and 13 deletions
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32
fs/nfs/client.c
View File

@ -458,7 +458,7 @@ static int nfs_create_rpc_client(struct nfs_client *clp,
static void nfs_destroy_server(struct nfs_server *server)
{
if (!(server->flags & NFS_MOUNT_NONLM))
lockd_down(); /* release rpc.lockd */
nlmclnt_done(server->nlm_host);
}
/*
@ -466,20 +466,26 @@ static void nfs_destroy_server(struct nfs_server *server)
*/
static int nfs_start_lockd(struct nfs_server *server)
{
int error = 0;
struct nlm_host *host;
struct nfs_client *clp = server->nfs_client;
u32 nfs_version = clp->rpc_ops->version;
unsigned short protocol = server->flags & NFS_MOUNT_TCP ?
IPPROTO_TCP : IPPROTO_UDP;
if (server->nfs_client->rpc_ops->version > 3)
goto out;
if (nfs_version > 3)
return 0;
if (server->flags & NFS_MOUNT_NONLM)
goto out;
error = lockd_up((server->flags & NFS_MOUNT_TCP) ?
IPPROTO_TCP : IPPROTO_UDP);
if (error < 0)
server->flags |= NFS_MOUNT_NONLM;
else
server->destroy = nfs_destroy_server;
out:
return error;
return 0;
host = nlmclnt_init(clp->cl_hostname,
(struct sockaddr *)&clp->cl_addr,
clp->cl_addrlen, protocol, nfs_version);
if (IS_ERR(host))
return PTR_ERR(host);
server->nlm_host = host;
server->destroy = nfs_destroy_server;
return 0;
}
/*

2
include/linux/nfs_fs_sb.h
View File

@ -8,6 +8,7 @@
#include <asm/atomic.h>
struct nfs_iostats;
struct nlm_host;
/*
* The nfs_client identifies our client state to the server.
@ -80,6 +81,7 @@ struct nfs_server {
struct list_head master_link; /* link in master servers list */
struct rpc_clnt * client; /* RPC client handle */
struct rpc_clnt * client_acl; /* ACL RPC client handle */
struct nlm_host *nlm_host; /* NLM client handle */
struct nfs_iostats * io_stats; /* I/O statistics */
struct backing_dev_info backing_dev_info;
atomic_long_t writeback; /* number of writeback pages */