From 6c7fb806f2b6273b132d75f8003c552ea5806000 Mon Sep 17 00:00:00 2001 From: Sebastian Andrzej Siewior Date: Tue, 14 Jul 2015 14:26:34 +0200 Subject: [PATCH 230/323] block/mq: do not invoke preempt_disable() Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/5.10/older/patches-5.10.215-rt107.tar.xz preempt_disable() and get_cpu() don't play well together with the sleeping locks it tries to allocate later. It seems to be enough to replace it with get_cpu_light() and migrate_disable(). Signed-off-by: Sebastian Andrzej Siewior --- block/blk-mq.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/block/blk-mq.c b/block/blk-mq.c index 927b1dc3476a2..a027c6734e9a2 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -1591,14 +1591,14 @@ static void __blk_mq_delay_run_hw_queue(struct blk_mq_hw_ctx *hctx, bool async, return; if (!async && !(hctx->flags & BLK_MQ_F_BLOCKING)) { - int cpu = get_cpu(); + int cpu = get_cpu_light(); if (cpumask_test_cpu(cpu, hctx->cpumask)) { __blk_mq_run_hw_queue(hctx); - put_cpu(); + put_cpu_light(); return; } - put_cpu(); + put_cpu_light(); } kblockd_mod_delayed_work_on(blk_mq_hctx_next_cpu(hctx), &hctx->run_work, -- 2.44.0