leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

ocfs2_dlm: Fix migrate lockres handler queue scanning

Browse Source 
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>
This commit is contained in:
Kurt Hackel 2007-01-05 15:04:49 -08:00 committed by Mark Fasheh
parent 71ac106243
commit e17e75ecb8
1 changed files with 20 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
fs/ocfs2/dlm/dlmrecovery.c
View File

@ -1708,10 +1708,11 @@ static int dlm_process_recovery_data(struct dlm_ctxt *dlm,
{
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 @@ static int dlm_process_recovery_data(struct dlm_ctxt *dlm,
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 @@ static int dlm_process_recovery_data(struct dlm_ctxt *dlm,
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 @@ static int dlm_process_recovery_data(struct dlm_ctxt *dlm,
}
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 */