Tejun Heo 5aeac7c4b1 blk-iocost: ioc_pd_free() shouldn't assume irq disabled
ioc_pd_free() grabs irq-safe ioc->lock without ensuring that irq is disabled
when it can be called with irq disabled or enabled. This has a small chance
of causing A-A deadlocks and triggers lockdep splats. Use irqsave operations
instead.

Signed-off-by: Tejun Heo <tj@kernel.org>
Fixes: 7caa47151ab2 ("blkcg: implement blk-iocost")
Cc: stable@vger.kernel.org # v5.4+
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-09-01 16:48:44 -06:00
..
2020-08-18 07:48:08 -07:00
2020-08-18 07:48:08 -07:00
2020-08-18 07:48:08 -07:00
2020-08-21 17:14:27 -06:00
2020-08-21 17:09:22 -06:00
2020-08-03 11:57:03 -07:00
2020-03-17 20:55:21 +01:00
2019-10-07 21:19:10 -06:00
2020-05-29 16:30:39 -06:00
2020-08-16 20:07:12 -07:00
2020-01-03 09:33:21 +01:00
2020-07-31 16:29:47 -06:00
2019-07-15 09:20:27 -03:00
2020-07-08 16:16:20 +02:00
2020-01-06 20:59:04 -07:00