GFS2: gfs2_dir_get_hash_table(): avoiding deferred vfree() is easy here...

vfree() is allowed under spinlock these days, but it's cheaper when
it doesn't step into deferred case and here it's very easy to avoid.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c
index c247fed..c5a34f0 100644 (file)
--- a/fs/gfs2/dir.c
+++ b/fs/gfs2/dir.c
@@ -370,11 +370,12 @@ static __be64 *gfs2_dir_get_hash_table(struct gfs2_inode *ip)
        }
 
        spin_lock(&inode->i_lock);
-       if (ip->i_hash_cache)
-               kvfree(hc);
-       else
+       if (likely(!ip->i_hash_cache)) {
                ip->i_hash_cache = hc;
+               hc = NULL;
+       }
        spin_unlock(&inode->i_lock);
+       kvfree(hc);
 
        return ip->i_hash_cache;
 }