32 lines
1.1 KiB
Diff
32 lines
1.1 KiB
Diff
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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Date: Tue, 27 Mar 2018 16:24:15 +0200
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Subject: [PATCH] dm rq: remove BUG_ON(!irqs_disabled) check
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.18/older/patches-4.18.5-rt3.tar.xz
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In commit 052189a2ec95 ("dm: remove superfluous irq disablement in
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dm_request_fn") the spin_lock_irq() was replaced with spin_lock() + a
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check for disabled interrupts. Later the locking part was removed in
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commit 2eb6e1e3aa87 ("dm: submit stacked requests in irq enabled
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context") but the BUG_ON() check remained.
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Since the original purpose for the "are-irqs-off" check is gone (the
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->queue_lock has been removed) remove it.
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Cc: Keith Busch <keith.busch@intel.com>
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Cc: Mike Snitzer <snitzer@redhat.com>
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Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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---
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drivers/md/dm-rq.c | 1 -
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1 file changed, 1 deletion(-)
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--- a/drivers/md/dm-rq.c
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+++ b/drivers/md/dm-rq.c
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@@ -688,7 +688,6 @@ static void dm_old_request_fn(struct req
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/* Establish tio->ti before queuing work (map_tio_request) */
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tio->ti = ti;
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kthread_queue_work(&md->kworker, &tio->work);
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- BUG_ON(!irqs_disabled());
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}
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}
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