fat: make sure to set d_ops in fat_get_parent

fat_get_parent needs to setup the dentry operations, otherwise we might
lose them when the NFS server needs to reconnect out of cache inodes.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index bdd8fb7be2ca..37a8af159a13 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -749,6 +749,8 @@ static struct dentry *fat_get_parent(struct dentry *child)
         brelse(bh);
 
         parent = d_obtain_alias(inode);
+        if (!IS_ERR(parent))
+                parent->d_op = sb->s_root->d_op;
 out:
         unlock_super(sb);