[PATCH] fat: make sure to set d_ops in fat_get_parent

[OGAWA Hirofumi]

From: Christoph Hellwig <hch@xxxxxx>

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@xxxxxx>
Signed-off-by: OGAWA Hirofumi <hirofumi@xxxxxxxxxxxxxxxxxx>
---
 fs/fat/inode.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index bdd8fb7..37a8af1 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);
 
-- 
1.6.0.5.dirty

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