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Add system_delay_taskq for long delay

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Add a dedicated system_delay_taskq for long delay like spa_deadman and
zpl_posix_acl_free. This will allow us to use system_taskq in the manner of
dispatch multiple tasks and call taskq_wait_outstanding.

Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Chunwei Chen <david.chen@osnexus.com>
Closes #588
This commit is contained in:
Chunwei Chen 2016-12-08 13:00:20 -08:00 committed by Brian Behlendorf
parent 493492559e
commit f200b83673
2 changed files with 16 additions and 0 deletions
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2
include/sys/taskq.h
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@ -129,6 +129,8 @@ typedef struct taskq_thread {
/* Global system-wide dynamic task queue available for all consumers */
extern taskq_t *system_taskq;
/* Global dynamic task queue for long delay */
extern taskq_t *system_delay_taskq;
/* List of all taskqs */
extern struct list_head tq_list;

14
module/spl/spl-taskq.c
View File

@ -50,6 +50,9 @@ MODULE_PARM_DESC(spl_taskq_thread_sequential,
/* Global system-wide dynamic task queue available for all consumers */
taskq_t *system_taskq;
EXPORT_SYMBOL(system_taskq);
/* Global dynamic task queue for long delay */
taskq_t *system_delay_taskq;
EXPORT_SYMBOL(system_delay_taskq);
/* Private dedicated taskq for creating new taskq threads on demand. */
static taskq_t *dynamic_taskq;
@ -1238,10 +1241,18 @@ spl_taskq_init(void)
if (system_taskq == NULL)
return (1);
system_delay_taskq = taskq_create("spl_delay_taskq", MAX(boot_ncpus, 4),
maxclsyspri, boot_ncpus, INT_MAX, TASKQ_PREPOPULATE|TASKQ_DYNAMIC);
if (system_delay_taskq == NULL) {
taskq_destroy(system_taskq);
return (1);
}
dynamic_taskq = taskq_create("spl_dynamic_taskq", 1,
maxclsyspri, boot_ncpus, INT_MAX, TASKQ_PREPOPULATE);
if (dynamic_taskq == NULL) {
taskq_destroy(system_taskq);
taskq_destroy(system_delay_taskq);
return (1);
}
@ -1261,6 +1272,9 @@ spl_taskq_fini(void)
taskq_destroy(dynamic_taskq);
dynamic_taskq = NULL;
taskq_destroy(system_delay_taskq);
system_delay_taskq = NULL;
taskq_destroy(system_taskq);
system_taskq = NULL;