Commit 6ff06a93 authored by Kurt Hackel's avatar Kurt Hackel Committed by Mark Fasheh
Browse files

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


Signed-off-by: default avatarKurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: default avatarMark Fasheh <mark.fasheh@oracle.com>
parent e7e69eb3
......@@ -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;
......
......@@ -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;
......
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