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(parent: bc0734f) | patch
dm: add cond_resched() to dm_wq_work()
authorPingfan Liu <piliu@redhat.com>
Wed, 15 Feb 2023 11:23:40 +0000 (19:23 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 10 Mar 2023 08:34:21 +0000 (09:34 +0100)
commit7f093695b49a0e46d2f1ad0c641dd04f8d20acd9
tree48a429de50c55cef2866d4b39cc2bbba0f62dba4tree
parentbc0734f689f817821f2a86ada1ee51271b462e06commit | diff
dm: add cond_resched() to dm_wq_work()

commit 0ca44fcef241768fd25ee763b3d203b9852f269b upstream.

Otherwise the while() loop in dm_wq_work() can result in a "dead
loop" on systems that have preemption disabled. This is particularly
problematic on single cpu systems.

Cc: stable@vger.kernel.org
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Acked-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/md/dm.c diff | blob | history
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