diff options
| author | Menyhart Zoltan <Zoltan.Menyhart@bull.net> | 2010-09-12 19:55:26 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2010-09-12 19:55:26 -0400 |
| commit | fbf3fdd2443965d9ba6fb4b5fecd1f6e0847218f (patch) | |
| tree | 55e1b68c3304b35e8c7e8d1f0de54521189908b9 | |
| parent | b20d37ca9561711c6a3c4b859c2855f49565e061 (diff) | |
statfs() gives ESTALE error
Hi,
An NFS client executes a statfs("file", &buff) call.
"file" exists / existed, the client has read / written it,
but it has already closed it.
user_path(pathname, &path) looks up "file" successfully in the
directory-cache and restarts the aging timer of the directory-entry.
Even if "file" has already been removed from the server, because the
lookupcache=positive option I use, keeps the entries valid for a while.
nfs_statfs() returns ESTALE if "file" has already been removed from the
server.
If the user application repeats the statfs("file", &buff) call, we
are stuck: "file" remains young forever in the directory-cache.
Signed-off-by: Zoltan Menyhart <Zoltan.Menyhart@bull.net>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org
| -rw-r--r-- | fs/nfs/super.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/nfs/super.c b/fs/nfs/super.c index ec3966e4706b..f4cbf0c306c6 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -431,7 +431,15 @@ static int nfs_statfs(struct dentry *dentry, struct kstatfs *buf) goto out_err; error = server->nfs_client->rpc_ops->statfs(server, fh, &res); + if (unlikely(error == -ESTALE)) { + struct dentry *pd_dentry; + pd_dentry = dget_parent(dentry); + if (pd_dentry != NULL) { + nfs_zap_caches(pd_dentry->d_inode); + dput(pd_dentry); + } + } nfs_free_fattr(res.fattr); if (error < 0) goto out_err; |