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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-05-23 19:26:10 +0200 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-05-23 21:24:59 +0200 |
| commit | 54ac471c83aff6b1e068eb8029c797dc68a76e89 (patch) | |
| tree | 3311a74fc6f5cdbedbe4e1da9bbbbaf6671050a2 /fs/nfs/idmap.c | |
| parent | NFSv4: Fix a race in the net namespace mount notification (diff) | |
| download | linux-54ac471c83aff6b1e068eb8029c797dc68a76e89.tar.xz linux-54ac471c83aff6b1e068eb8029c797dc68a76e89.zip | |
NFS: Add memory barriers to the nfs_client->cl_cons_state initialisation
Ensure that a process that uses the nfs_client->cl_cons_state test
for whether the initialisation process is finished does not read
stale data.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/idmap.c')
| -rw-r--r-- | fs/nfs/idmap.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/nfs/idmap.c b/fs/nfs/idmap.c index 861be75eb165..b5b86a05059c 100644 --- a/fs/nfs/idmap.c +++ b/fs/nfs/idmap.c @@ -548,6 +548,7 @@ restart: /* Skip nfs_clients that failed to initialise */ if (clp->cl_cons_state < 0) continue; + smp_rmb(); if (clp->rpc_ops != &nfs_v4_clientops) continue; cl_dentry = clp->cl_idmap->idmap_pipe->dentry; |