diff options
| author | Kurt Hackel <kurt.hackel@oracle.com> | 2006-05-01 18:51:45 (GMT) |
|---|---|---|
| committer | Mark Fasheh <mark.fasheh@oracle.com> | 2006-06-26 21:43:04 (GMT) |
| commit | 6ff06a93916b3f95e83c346f7530cf2f5c68ae0c (patch) | |
| tree | 7708dbb53baf65d58aa5af259b5360abf0e11d14 /fs/ocfs2/dlm | |
| parent | e7e69eb38946ebef86e27442d01514fcf9c854ee (diff) | |
| download | linux-6ff06a93916b3f95e83c346f7530cf2f5c68ae0c.tar.xz | |
ocfs2: give the dlm dirty list a reference on the lockres
Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Diffstat (limited to 'fs/ocfs2/dlm')
| -rw-r--r-- | fs/ocfs2/dlm/dlmcommon.h | 14 | ||||
| -rw-r--r-- | fs/ocfs2/dlm/dlmthread.c | 6 |
2 files changed, 17 insertions, 3 deletions
diff --git a/fs/ocfs2/dlm/dlmcommon.h b/fs/ocfs2/dlm/dlmcommon.h index 78eccd0..829cc39 100644 --- a/fs/ocfs2/dlm/dlmcommon.h +++ b/fs/ocfs2/dlm/dlmcommon.h @@ -235,18 +235,26 @@ struct dlm_lock_resource struct qstr lockname; struct kref refs; - /* please keep these next 3 in this order - * some funcs want to iterate over all lists */ + /* + * Please keep granted, converting, and blocked in this order, + * as some funcs want to iterate over all lists. + * + * All four lists are protected by the hash's reference. + */ struct list_head granted; struct list_head converting; struct list_head blocked; + struct list_head purge; + /* + * These two lists require you to hold an additional reference + * while they are on the list. + */ struct list_head dirty; struct list_head recovering; // dlm_recovery_ctxt.resources list /* unused lock resources have their last_used stamped and are * put on a list for the dlm thread to run. */ - struct list_head purge; unsigned long last_used; unsigned migration_pending:1; diff --git a/fs/ocfs2/dlm/dlmthread.c b/fs/ocfs2/dlm/dlmthread.c index 76526ea..610dc76 100644 --- a/fs/ocfs2/dlm/dlmthread.c +++ b/fs/ocfs2/dlm/dlmthread.c @@ -455,6 +455,8 @@ void __dlm_dirty_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *res) /* don't shuffle secondary queues */ if ((res->owner == dlm->node_num) && !(res->state & DLM_LOCK_RES_DIRTY)) { + /* ref for dirty_list */ + dlm_lockres_get(res); list_add_tail(&res->dirty, &dlm->dirty_list); res->state |= DLM_LOCK_RES_DIRTY; } @@ -639,6 +641,8 @@ static int dlm_thread(void *data) list_del_init(&res->dirty); spin_unlock(&res->spinlock); spin_unlock(&dlm->spinlock); + /* Drop dirty_list ref */ + dlm_lockres_put(res); /* lockres can be re-dirtied/re-added to the * dirty_list in this gap, but that is ok */ @@ -691,6 +695,8 @@ in_progress: /* if the lock was in-progress, stick * it on the back of the list */ if (delay) { + /* ref for dirty_list */ + dlm_lockres_get(res); spin_lock(&res->spinlock); list_add_tail(&res->dirty, &dlm->dirty_list); res->state |= DLM_LOCK_RES_DIRTY; |