fs/9p: Workaround vfs rename rehash bug

This is similar to what ceph, ocfs2 and nfs does
http://kerneltrap.org/mailarchive/linux-fsdevel/2008/4/18/1498534

May be we should get vfs fixed

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index c072bb97e957..8e9d60345bc8 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -884,6 +884,11 @@ clunk_newdir:
                                 clear_nlink(new_inode);
                         else
                                 drop_nlink(new_inode);
+                        /*
+                         * Work around vfs rename rehash bug with
+                         * FS_RENAME_DOES_D_MOVE
+                         */
+                        v9fs_invalidate_inode_attr(new_inode);
                 }
                 if (S_ISDIR(old_inode->i_mode)) {
                         if (!new_inode)