diff options
| author | David Teigland <teigland@redhat.com> | 2006-10-31 20:55:56 +0300 |
|---|---|---|
| committer | Steven Whitehouse <swhiteho@redhat.com> | 2006-11-30 18:35:10 +0300 |
| commit | d4400156d415540086c34a06e5d233122d6bf56a (patch) | |
| tree | 747e4d270fb453d57926d6b6cab564664d9d2c0f /fs/dlm/requestqueue.h | |
| parent | 435618b75b82b5ee511cc01fcdda9c44adb2f4bd (diff) | |
| download | linux-d4400156d415540086c34a06e5d233122d6bf56a.tar.xz | |
[DLM] fix requestqueue race
Red Hat BZ 211914
There's a race between dlm_recoverd (1) enabling locking and (2) clearing
out the requestqueue, and dlm_recvd (1) checking if locking is enabled and
(2) adding a message to the requestqueue. An order of recoverd(1),
recvd(1), recvd(2), recoverd(2) will result in a message being left on the
requestqueue. The fix is to have dlm_recvd check if dlm_recoverd has
enabled locking after taking the mutex for the requestqueue and if it has
processing the message instead of queueing it.
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/dlm/requestqueue.h')
| -rw-r--r-- | fs/dlm/requestqueue.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/dlm/requestqueue.h b/fs/dlm/requestqueue.h index 349f0d292d95..6a53ea03335d 100644 --- a/fs/dlm/requestqueue.h +++ b/fs/dlm/requestqueue.h @@ -13,7 +13,7 @@ #ifndef __REQUESTQUEUE_DOT_H__ #define __REQUESTQUEUE_DOT_H__ -void dlm_add_requestqueue(struct dlm_ls *ls, int nodeid, struct dlm_header *hd); +int dlm_add_requestqueue(struct dlm_ls *ls, int nodeid, struct dlm_header *hd); int dlm_process_requestqueue(struct dlm_ls *ls); void dlm_wait_requestqueue(struct dlm_ls *ls); void dlm_purge_requestqueue(struct dlm_ls *ls); |