diff options
author | Thomas Gleixner <tglx@linutronix.de> | 2020-11-01 17:54:13 +0100 |
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committer | Thomas Gleixner <tglx@linutronix.de> | 2020-11-01 17:54:13 +0100 |
commit | 17bb415fefedb74d2ff02656cf59e4e3ab92ee20 (patch) | |
tree | 0ada27d370a1e2bfab1b57df9bb02a1a20371662 /block/blk-mq-sched.c | |
parent | ceb2465c51195967f11f6507538579816ac67cb8 (diff) | |
parent | d95bdca75b3fb41bf185efe164e05aed820081a5 (diff) |
Merge tag 'irqchip-fixes-5.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent
Pull irqchip fixes from Marc Zyngier:
- A couple of fixes after the IPI as IRQ patches (Kconfig, bcm2836)
- Two SiFive PLIC fixes (irq_set_affinity, hierarchy handling)
- "unmapped events" handling for the ti-sci-inta controller
- Tidying up for the irq-mst driver (static functions, Kconfig)
- Small cleanup in the Renesas irqpin driver
- STM32 exti can now handle LP timer events
Diffstat (limited to 'block/blk-mq-sched.c')
-rw-r--r-- | block/blk-mq-sched.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/block/blk-mq-sched.c b/block/blk-mq-sched.c index a19cdf159b75..d2790e5b06d1 100644 --- a/block/blk-mq-sched.c +++ b/block/blk-mq-sched.c @@ -78,6 +78,15 @@ void blk_mq_sched_restart(struct blk_mq_hw_ctx *hctx) return; clear_bit(BLK_MQ_S_SCHED_RESTART, &hctx->state); + /* + * Order clearing SCHED_RESTART and list_empty_careful(&hctx->dispatch) + * in blk_mq_run_hw_queue(). Its pair is the barrier in + * blk_mq_dispatch_rq_list(). So dispatch code won't see SCHED_RESTART, + * meantime new request added to hctx->dispatch is missed to check in + * blk_mq_run_hw_queue(). + */ + smp_mb(); + blk_mq_run_hw_queue(hctx, true); } |