afs: Implement sillyrename for unlink and rename
Implement sillyrename for AFS unlink and rename, using the NFS variant
implementation as a basis.
Note that the asynchronous file locking extender/releaser has to be
notified with a state change to stop it complaining if there's a race
between that and the actual file deletion.
A tracepoint, afs_silly_rename, is also added to note the silly rename and
the cleanup. The afs_edit_dir tracepoint is given some extra reason
indicators and the afs_flock_ev tracepoint is given a silly-delete file
lock cancellation indicator.
Signed-off-by: David Howells <dhowells@redhat.com>
diff --git a/fs/afs/flock.c b/fs/afs/flock.c
index 742038a..325bf73 100644
--- a/fs/afs/flock.c
+++ b/fs/afs/flock.c
@@ -300,7 +300,7 @@ void afs_lock_work(struct work_struct *work)
/* attempt to release the server lock; if it fails, we just
* wait 5 minutes and it'll expire anyway */
ret = afs_release_lock(vnode, vnode->lock_key);
- if (ret < 0) {
+ if (ret < 0 && vnode->lock_state != AFS_VNODE_LOCK_DELETED) {
trace_afs_flock_ev(vnode, NULL, afs_flock_release_fail,
ret);
printk(KERN_WARNING "AFS:"