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Use system_delay_taskq for long delay tasks

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Use it for spa_deadman, zpl_posix_acl_free, snapentry_expire.
This free system_taskq from the above long delay tasks, and allow us to do
taskq_wait_outstanding on system_taskq without being blocked forever, making
system_taskq more generic and useful.

Signed-off-by: Chunwei Chen <david.chen@osnexus.com>
This commit is contained in:
Chunwei Chen
2016-11-30 13:56:50 -08:00
parent 616fa7c02b
commit 57ddcda164
7 changed files with 18 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files
module/zfs/spa.c
+4 -4
View File
@@ -1208,7 +1208,7 @@ spa_deactivate(spa_t *spa)
list_destroy(&spa->spa_evicting_os_list);
list_destroy(&spa->spa_state_dirty_list);
taskq_cancel_id(system_taskq, spa->spa_deadman_tqid);
taskq_cancel_id(system_delay_taskq, spa->spa_deadman_tqid);
for (t = 0; t < ZIO_TYPES; t++) {
for (q = 0; q < ZIO_TASKQ_TYPES; q++) {
@@ -6517,8 +6517,8 @@ spa_sync(spa_t *spa, uint64_t txg)
tx = dmu_tx_create_assigned(dp, txg);
spa->spa_sync_starttime = gethrtime();
taskq_cancel_id(system_taskq, spa->spa_deadman_tqid);
spa->spa_deadman_tqid = taskq_dispatch_delay(system_taskq,
taskq_cancel_id(system_delay_taskq, spa->spa_deadman_tqid);
spa->spa_deadman_tqid = taskq_dispatch_delay(system_delay_taskq,
spa_deadman, spa, TQ_SLEEP, ddi_get_lbolt() +
NSEC_TO_TICK(spa->spa_deadman_synctime));
@@ -6706,7 +6706,7 @@ spa_sync(spa_t *spa, uint64_t txg)
}
dmu_tx_commit(tx);
taskq_cancel_id(system_taskq, spa->spa_deadman_tqid);
taskq_cancel_id(system_delay_taskq, spa->spa_deadman_tqid);
spa->spa_deadman_tqid = 0;
/*
module/zfs/spa_misc.c
+1 -1
View File
@@ -530,7 +530,7 @@ spa_deadman(void *arg)
if (zfs_deadman_enabled)
vdev_deadman(spa->spa_root_vdev);
spa->spa_deadman_tqid = taskq_dispatch_delay(system_taskq,
spa->spa_deadman_tqid = taskq_dispatch_delay(system_delay_taskq,
spa_deadman, spa, TQ_SLEEP, ddi_get_lbolt() +
NSEC_TO_TICK(spa->spa_deadman_synctime));
}
module/zfs/zfs_ctldir.c
+2 -12
View File
@@ -111,11 +111,6 @@ static krwlock_t zfs_snapshot_lock;
int zfs_expire_snapshot = ZFSCTL_EXPIRE_SNAPSHOT;
int zfs_admin_snapshot = 1;
/*
* Dedicated task queue for unmounting snapshots.
*/
static taskq_t *zfs_expire_taskq;
typedef struct {
char *se_name; /* full snapshot name */
char *se_path; /* full mount path */
@@ -365,7 +360,7 @@ zfsctl_snapshot_unmount_cancel(zfs_snapentry_t *se)
{
ASSERT(RW_LOCK_HELD(&zfs_snapshot_lock));
if (taskq_cancel_id(zfs_expire_taskq, se->se_taskqid) == 0) {
if (taskq_cancel_id(system_delay_taskq, se->se_taskqid) == 0) {
se->se_taskqid = TASKQID_INVALID;
zfsctl_snapshot_rele(se);
}
@@ -383,7 +378,7 @@ zfsctl_snapshot_unmount_delay_impl(zfs_snapentry_t *se, int delay)
return;
zfsctl_snapshot_hold(se);
se->se_taskqid = taskq_dispatch_delay(zfs_expire_taskq,
se->se_taskqid = taskq_dispatch_delay(system_delay_taskq,
snapentry_expire, se, TQ_SLEEP, ddi_get_lbolt() + delay * HZ);
}
@@ -1257,9 +1252,6 @@ zfsctl_init(void)
sizeof (zfs_snapentry_t), offsetof(zfs_snapentry_t,
se_node_objsetid));
rw_init(&zfs_snapshot_lock, NULL, RW_DEFAULT, NULL);
zfs_expire_taskq = taskq_create("z_unmount", 1, defclsyspri,
1, 8, TASKQ_PREPOPULATE);
}
/*
@@ -1269,8 +1261,6 @@ zfsctl_init(void)
void
zfsctl_fini(void)
{
taskq_destroy(zfs_expire_taskq);
avl_destroy(&zfs_snapshots_by_name);
avl_destroy(&zfs_snapshots_by_objsetid);
rw_destroy(&zfs_snapshot_lock);
module/zfs/zfs_vfsops.c
+1
View File
@@ -1922,6 +1922,7 @@ zfs_fini(void)
/*
* we don't use outstanding because zpl_posix_acl_free might add more.
*/
taskq_wait(system_delay_taskq);
taskq_wait(system_taskq);
unregister_filesystem(&zpl_fs_type);
zfs_znode_fini();
module/zfs/zpl_xattr.c
+4 -4
View File
@@ -1511,8 +1511,8 @@ zpl_posix_acl_free(void *arg)
}
if (refire)
taskq_dispatch_delay(system_taskq, zpl_posix_acl_free, NULL,
TQ_SLEEP, new_time);
taskq_dispatch_delay(system_delay_taskq, zpl_posix_acl_free,
NULL, TQ_SLEEP, new_time);
while (freelist) {
a = freelist;
@@ -1537,7 +1537,7 @@ zpl_posix_acl_release_impl(struct posix_acl *acl)
*prev = a;
/* if it was empty before, schedule the free task */
if (prev == &acl_rel_head)
taskq_dispatch_delay(system_taskq, zpl_posix_acl_free, NULL,
TQ_SLEEP, ddi_get_lbolt() + ACL_REL_SCHED);
taskq_dispatch_delay(system_delay_taskq, zpl_posix_acl_free,
NULL, TQ_SLEEP, ddi_get_lbolt() + ACL_REL_SCHED);
}
#endif