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authorTrond Myklebust <trond.myklebust@primarydata.com>2014-02-12 08:17:00 -0500
committerTrond Myklebust <trond.myklebust@primarydata.com>2014-02-19 21:21:06 -0500
commit9a7fe9e8900baad5f6643000ea48b91aee895165 (patch)
tree2e83b086f8824df9d4ebe4d8bcd502a1c4aba1da /fs/nfs
parent27999f253010bd64fd63dc80c99f8e926e2b110d (diff)
NFSv4.1: Minor optimisation in get_layout_by_fh_locked()
If the filehandles match, but the igrab() fails, or the layout is freed before we can get it, then just return NULL. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/callback_proc.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c
index 570c8a1d2f3..41db5258e7a 100644
--- a/fs/nfs/callback_proc.c
+++ b/fs/nfs/callback_proc.c
@@ -127,13 +127,13 @@ static struct pnfs_layout_hdr * get_layout_by_fh_locked(struct nfs_client *clp,
continue;
ino = igrab(lo->plh_inode);
if (!ino)
- continue;
+ break;
spin_lock(&ino->i_lock);
/* Is this layout in the process of being freed? */
if (NFS_I(ino)->layout != lo) {
spin_unlock(&ino->i_lock);
iput(ino);
- continue;
+ break;
}
pnfs_get_layout_hdr(lo);
spin_unlock(&ino->i_lock);