From: Jens Axboe <axboe@kernel.dk>
To: Shaohua Li <shli@fb.com>,
linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-raid@vger.kernel.org
Cc: qkrwngud825@gmail.com, Kernel-team@fb.com,
"v4.3+" <stable@vger.kernel.org>,
Ming Lei <ming.lei@canonical.com>, Jens Axboe <axboe@fb.com>,
Neil Brown <neilb@suse.de>
Subject: Re: [PATCH] MD: make bio mergeable
Date: Mon, 25 Apr 2016 18:59:02 -0600 [thread overview]
Message-ID: <571EBD56.7010204@kernel.dk> (raw)
In-Reply-To: <384a0e0c7d6f2700aadbcbdef003cece88fa7dd7.1461626533.git.shli@fb.com>
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
next prev parent reply other threads:[~2016-04-26 0:59 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-25 23:52 [PATCH] MD: make bio mergeable Shaohua Li
2016-04-26 0:59 ` Jens Axboe [this message]
2016-04-26 1:15 ` Jens Axboe
2016-04-26 9:56 ` Ming Lei
2016-04-26 14:21 ` Jens Axboe
2016-04-26 15:17 ` Ming Lei
2016-04-28 20:00 ` Holger Kiehl
2016-04-28 21:19 ` Shaohua Li
2016-04-29 9:23 ` Holger Kiehl
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