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>
nomis · Jan 3, 2011 · a6e8dc4 · a6e8dc4
1 parent 89b90be
commit a6e8dc4
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/fs/bio-integrity.c b/fs/bio-integrity.c
@@ -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");