Commit a6e8dc46 authored Jan 03, 2011 by Tejun Heo Committed by Jens Axboe Jan 03, 2011

bio-integrity: mark kintegrityd_wq highpri and CPU intensive



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>

parent 89b90be2

fs/bio-integrity.c

+6 −1

Original line number	Diff line number	Diff line
		@@ -782,7 +782,12 @@ void __init bio_integrity_init(void)
		{
		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)
		panic("Failed to create kintegrityd\n");