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ocfs2: give the dlm dirty list a reference on the lockres

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Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
This commit is contained in:
Kurt Hackel
2006-05-01 11:51:45 -07:00
committed by Mark Fasheh
parent e7e69eb389
commit 6ff06a9391
2 changed files with 17 additions and 3 deletions
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14
fs/ocfs2/dlm/dlmcommon.h
View File

@@ -235,18 +235,26 @@ struct dlm_lock_resource
struct qstr lockname; struct qstr lockname;
struct kref refs; 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 granted;
struct list_head converting; struct list_head converting;
struct list_head blocked; 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 dirty;
struct list_head recovering; // dlm_recovery_ctxt.resources list struct list_head recovering; // dlm_recovery_ctxt.resources list
/* unused lock resources have their last_used stamped and are /* unused lock resources have their last_used stamped and are
* put on a list for the dlm thread to run. */ * put on a list for the dlm thread to run. */
struct list_head purge;
unsigned long last_used; unsigned long last_used;
unsigned migration_pending:1; unsigned migration_pending:1;

6
fs/ocfs2/dlm/dlmthread.c
View File

@@ -455,6 +455,8 @@ void __dlm_dirty_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *res)
/* don't shuffle secondary queues */ /* don't shuffle secondary queues */
if ((res->owner == dlm->node_num) && if ((res->owner == dlm->node_num) &&
!(res->state & DLM_LOCK_RES_DIRTY)) { !(res->state & DLM_LOCK_RES_DIRTY)) {
/* ref for dirty_list */
dlm_lockres_get(res);
list_add_tail(&res->dirty, &dlm->dirty_list); list_add_tail(&res->dirty, &dlm->dirty_list);
res->state |= DLM_LOCK_RES_DIRTY; res->state |= DLM_LOCK_RES_DIRTY;
} }
@@ -639,6 +641,8 @@ static int dlm_thread(void *data)
list_del_init(&res->dirty); list_del_init(&res->dirty);
spin_unlock(&res->spinlock); spin_unlock(&res->spinlock);
spin_unlock(&dlm->spinlock); spin_unlock(&dlm->spinlock);
/* Drop dirty_list ref */
dlm_lockres_put(res);
/* lockres can be re-dirtied/re-added to the /* lockres can be re-dirtied/re-added to the
* dirty_list in this gap, but that is ok */ * dirty_list in this gap, but that is ok */
@@ -691,6 +695,8 @@ in_progress:
/* if the lock was in-progress, stick /* if the lock was in-progress, stick
* it on the back of the list */ * it on the back of the list */
if (delay) { if (delay) {
/* ref for dirty_list */
dlm_lockres_get(res);
spin_lock(&res->spinlock); spin_lock(&res->spinlock);
list_add_tail(&res->dirty, &dlm->dirty_list); list_add_tail(&res->dirty, &dlm->dirty_list);
res->state |= DLM_LOCK_RES_DIRTY; res->state |= DLM_LOCK_RES_DIRTY;