ceph: fix dentry reference leak in dcache readdir

When filldir returned an error (e.g. buffer full for a large directory),
we would leak a dentry reference, causing an oops on umount.

Signed-off-by: Sage Weil <sage@newdream.net>

diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index aed8fda..7505b4f 100644 (file)
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -170,11 +170,11 @@ more:
        spin_lock(&inode->i_lock);
        spin_lock(&dcache_lock);
 
+       last = dentry;
+
        if (err < 0)
                goto out_unlock;
 
-       last = dentry;
-
        p = p->prev;
        filp->f_pos++;