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(parent: 5aeac7c) | patch
blk-stat: make q->stats->lock irqsafe
authorTejun Heo <tj@kernel.org>
Tue, 1 Sep 2020 18:52:32 +0000 (14:52 -0400)
committerJens Axboe <axboe@kernel.dk>
Tue, 1 Sep 2020 22:48:46 +0000 (16:48 -0600)
commite11d80a849e010f78243bb6f6af7dccef3a71a90
tree062c215da69eba44baa7a2f416c6299c7a42e832tree | snapshot
parent5aeac7c4b16069aae49005f0a8d4526baa83341bcommit | diff
blk-stat: make q->stats->lock irqsafe

blk-iocost calls blk_stat_enable_accounting() while holding an irqsafe lock
which triggers a lockdep splat because q->stats->lock isn't irqsafe. Let's
make it irqsafe.

Signed-off-by: Tejun Heo <tj@kernel.org>
Fixes: cd006509b0a9 ("blk-iocost: account for IO size when testing latencies")
Cc: stable@vger.kernel.org # v5.8+
Signed-off-by: Jens Axboe <axboe@kernel.dk>
block/blk-stat.c diff | blob | history
Domain: System / Kernel;