ceph: fix dentry rehashing on virtual .snap dir

[net-next-2.6.git] / fs / ceph / inode.c

diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index aca82d55cc53882a5fc3af08955e56a9f317e8cd..26f883c275e85e6746f23884015d08777cbff95d 100644 (file)
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -886,6 +886,7 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req,
        struct inode *in = NULL;
        struct ceph_mds_reply_inode *ininfo;
        struct ceph_vino vino;
+       struct ceph_client *client = ceph_sb_to_client(sb);
        int i = 0;
        int err = 0;
 
@@ -949,7 +950,14 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req,
                        return err;
        }
 
-       if (rinfo->head->is_dentry && !req->r_aborted) {
+       /*
+        * ignore null lease/binding on snapdir ENOENT, or else we
+        * will have trouble splicing in the virtual snapdir later
+        */
+       if (rinfo->head->is_dentry && !req->r_aborted &&
+           (rinfo->head->is_target || strncmp(req->r_dentry->d_name.name,
+                                              client->mount_args->snapdir_name,
+                                              req->r_dentry->d_name.len))) {
                /*
                 * lookup link rename   : null -> possibly existing inode
                 * mknod symlink mkdir  : null -> new inode