On Tue, Nov 07, 2017 at 09:23:19AM -0700, Jens Axboe wrote: > On 11/07/2017 02:59 AM, Ming Lei wrote: > > 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. > > Fix looks correct to me, but it's missing a Fixes: line. I tried to > go back a little bit, but it looks like this failure case was > introduced just recently: > > commit 88022d7201e96b43f1754b0358fc6bcd8dbdcde1 > Author: Ming Lei <[email protected]> > Date: Sun Nov 5 02:21:12 2017 +0800 > > blk-mq: don't handle failure in .get_budget
Actually it is introduced in de1482974080ec9ef41(blk-mq: introduce .get_budget and .put_budget in blk_mq_ops), will add Fixes in V2. Thanks, Ming
