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(parent: ccdaa76) | patch
blk-mq: put driver tag if dispatch budget can't be got
authorMing Lei <ming.lei@redhat.com>
Wed, 8 Nov 2017 01:11:22 +0000 (09:11 +0800)
committerJens Axboe <axboe@kernel.dk>
Sat, 11 Nov 2017 02:53:25 +0000 (19:53 -0700)
commit86af0d41316b68453535c7ab8badc2f1ea643c91
treee367c79457485a183e6231868fa5fb8fce2b2e40tree | snapshot
parentccdaa76ad6da89d48756c4452f2d9f6abd476c47commit | diff
blk-mq: put driver tag if dispatch budget can't be got

We have to put the driver tag if dispatch budget can't be got, otherwise
it might cause IO deadlock, especially in case that size of tags is very
small.

Fixes: a64459cb49f0(blk-mq: introduce .get_budget and .put_budget in blk_mq_ops)
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
block/blk-mq.c diff | blob | history
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