ocfs2_dlm: Fix migrate lockres handler queue scanning
The migrate lockres handler was only searching for its lock on
migrated lockres on the expected queue. This could be problematic
as the new master could have also issued a convert request
during the migration and thus moved the lock to the convert queue.
We now search for the lock on all three queues.
Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: Sunil Mushran <Sunil.Mushran@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c
index 3057b65..f93315c 100644
--- a/fs/ocfs2/dlm/dlmrecovery.c
+++ b/fs/ocfs2/dlm/dlmrecovery.c
@@ -1708,10 +1708,11 @@
{
struct dlm_migratable_lock *ml;
struct list_head *queue;
+ struct list_head *tmpq = NULL;
struct dlm_lock *newlock = NULL;
struct dlm_lockstatus *lksb = NULL;
int ret = 0;
- int i, bad;
+ int i, j, bad;
struct list_head *iter;
struct dlm_lock *lock = NULL;
u8 from = O2NM_MAX_NODES;
@@ -1738,6 +1739,7 @@
lksb = NULL;
queue = dlm_list_num_to_pointer(res, ml->list);
+ tmpq = NULL;
/* if the lock is for the local node it needs to
* be moved to the proper location within the queue.
@@ -1747,11 +1749,16 @@
BUG_ON(!(mres->flags & DLM_MRES_MIGRATION));
spin_lock(&res->spinlock);
- list_for_each(iter, queue) {
- lock = list_entry (iter, struct dlm_lock, list);
- if (lock->ml.cookie != ml->cookie)
- lock = NULL;
- else
+ for (j = DLM_GRANTED_LIST; j <= DLM_BLOCKED_LIST; j++) {
+ tmpq = dlm_list_idx_to_ptr(res, j);
+ list_for_each(iter, tmpq) {
+ lock = list_entry (iter, struct dlm_lock, list);
+ if (lock->ml.cookie != ml->cookie)
+ lock = NULL;
+ else
+ break;
+ }
+ if (lock)
break;
}
@@ -1768,6 +1775,13 @@
}
BUG_ON(lock->ml.node != ml->node);
+ if (tmpq != queue) {
+ mlog(0, "lock was on %u instead of %u for %.*s\n",
+ j, ml->list, res->lockname.len, res->lockname.name);
+ spin_unlock(&res->spinlock);
+ continue;
+ }
+
/* see NOTE above about why we do not update
* to match the master here */