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authorTrond Myklebust <Trond.Myklebust@netapp.com>2012-12-21 11:02:32 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-21 08:32:09 -0800
commitc4271c6e37c32105492cbbed35f45330cb327b94 (patch)
treea3fd8be5fb51c29539ae3e540837e1e59ecd4e8b /fs/nfs/super.c
parentc129c29347b6cf0d64bfe53848f68320286612ab (diff)
downloadleg-kernel-c4271c6e37c32105492cbbed35f45330cb327b94.tar.gz
NFS: Kill fscache warnings when mounting without -ofsc
The fscache code will currently bleat a "non-unique superblock keys" warning even if the user is mounting without the 'fsc' option. There should be no reason to even initialise the superblock cache cookie unless we're planning on using fscache for something, so ensure that we check for the NFS_OPTION_FSCACHE flag before calling into the fscache code. Reported-by: PaweĊ‚ Sikora <pawel.sikora@agmk.net> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: David Howells <dhowells@redhat.com> Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/nfs/super.c')
-rw-r--r--fs/nfs/super.c19
1 files changed, 15 insertions, 4 deletions
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index aa5315bb3666..c25cadf8f8c4 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -2375,19 +2375,30 @@ static void nfs_get_cache_cookie(struct super_block *sb,
struct nfs_parsed_mount_data *parsed,
struct nfs_clone_mount *cloned)
{
+ struct nfs_server *nfss = NFS_SB(sb);
char *uniq = NULL;
int ulen = 0;
- if (parsed && parsed->fscache_uniq) {
- uniq = parsed->fscache_uniq;
- ulen = strlen(parsed->fscache_uniq);
+ nfss->fscache_key = NULL;
+ nfss->fscache = NULL;
+
+ if (parsed) {
+ if (!(parsed->options & NFS_OPTION_FSCACHE))
+ return;
+ if (parsed->fscache_uniq) {
+ uniq = parsed->fscache_uniq;
+ ulen = strlen(parsed->fscache_uniq);
+ }
} else if (cloned) {
struct nfs_server *mnt_s = NFS_SB(cloned->sb);
+ if (!(mnt_s->options & NFS_OPTION_FSCACHE))
+ return;
if (mnt_s->fscache_key) {
uniq = mnt_s->fscache_key->key.uniquifier;
ulen = mnt_s->fscache_key->key.uniq_len;
};
- }
+ } else
+ return;
nfs_fscache_get_super_cookie(sb, uniq, ulen);
}