Re: [PATCH] MD: make bio mergeable
From: Jens Axboe <axboe@kernel.dk>
Date: 2016-04-26 00:59:09
Also in:
lkml, stable
On 04/25/2016 05:52 PM, Shaohua Li wrote:
blk_queue_split marks bio unmergeable, which makes sense for normal bio. But if dispatching the bio to underlayer disk, the blk_queue_split checks are invalid, hence it's possible the bio becomes mergeable. In the reported bug, this bug causes trim against raid0 performance slash https://bugzilla.kernel.org/show_bug.cgi?id=117051
Good catch! Will apply for this series, thanks Shaohua. -- Jens Axboe