The function ioc_create_icq here is not called in atomic context. Thus GFP_ATOMIC is not necessary, and it can be replaced with GFP_KERNEL.
This is found by a static analysis tool named DCNS written by myself. Signed-off-by: Jia-Ju Bai <baijiaju1...@gmail.com> --- block/blk-mq-sched.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/blk-mq-sched.c b/block/blk-mq-sched.c index c117bd8..d461e31 100644 --- a/block/blk-mq-sched.c +++ b/block/blk-mq-sched.c @@ -42,7 +42,7 @@ void blk_mq_sched_assign_ioc(struct request *rq, struct bio *bio) spin_unlock_irq(q->queue_lock); if (!icq) { - icq = ioc_create_icq(ioc, q, GFP_ATOMIC); + icq = ioc_create_icq(ioc, q, GFP_KERNEL); if (!icq) return; } -- 1.7.9.5