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bio-integrity: mark kintegrityd_wq highpri and CPU intensive

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Work items processed by kintegrityd_wq won't block much, may burn a
lot of CPU cycles and affect IO latency.  Use alloc_workqueue() to
mark it highpri and CPU intensive with max concurrency of 1.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
This commit is contained in:
Tejun Heo 2011-01-03 15:01:48 +01:00 committed by Jens Axboe
parent 89b90be2d8
commit a6e8dc46ff
1 changed files with 6 additions and 1 deletions
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7
fs/bio-integrity.c
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@ -782,7 +782,12 @@ void __init bio_integrity_init(void)
{ {
unsigned int i; unsigned int i;
kintegrityd_wq = create_workqueue("kintegrityd"); /*
* kintegrityd won't block much but may burn a lot of CPU cycles.
* Make it highpri CPU intensive wq with max concurrency of 1.
*/
kintegrityd_wq = alloc_workqueue("kintegrityd", WQ_MEM_RECLAIM |
WQ_HIGHPRI | WQ_CPU_INTENSIVE, 1);
if (!kintegrityd_wq) if (!kintegrityd_wq)
panic("Failed to create kintegrityd\n"); panic("Failed to create kintegrityd\n");