From: Sagi Grimberg <sagig@dev.mellanox.co.il>
To: Ming Lei <ming.lei@canonical.com>, Jens Axboe <axboe@kernel.dk>,
linux-kernel@vger.kernel.org
Cc: linux-block@vger.kernel.org, Christoph Hellwig <hch@infradead.org>
Subject: Re: [PATCH 0/4] block: fix bio_will_gap()
Date: Mon, 15 Feb 2016 10:33:29 +0200 [thread overview]
Message-ID: <56C18D59.5050704@dev.mellanox.co.il> (raw)
In-Reply-To: <1455519687-23873-1-git-send-email-ming.lei@canonical.com>
> Hi,
>
> After bio splitting is introduced, the splitted bio can be fast-cloned,
> which is correct because biovecs has become immutable since v3.13.
>
> Unfortunately bio_will_gap() isn't ready for this kind of change,
> because it figures out the last bvec via 'bi_io_vec[prev->bi_vcnt - 1]'
> directly.
>
> It is observed that lots of BIOs are merges even the virt boundary
> limit is violated, and the issue is reported from Sagi Grimberg.
This set makes the virt_boundary violation go away...
prev parent reply other threads:[~2016-02-15 8:33 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-15 7:01 Ming Lei
2016-02-15 7:01 ` [PATCH 1/4] block: bio: introduce helpers to get the 1st and last bvec Ming Lei
2016-02-15 8:19 ` Sagi Grimberg
2016-02-15 9:42 ` Ming Lei
2016-02-15 20:06 ` Sagi Grimberg
2016-02-16 13:03 ` Ming Lei
2016-02-17 3:08 ` Elliott, Robert (Persistent Memory)
2016-02-18 4:24 ` Kent Overstreet
2016-02-18 6:16 ` Ming Lei
2016-02-19 1:47 ` Ming Lei
2016-02-15 7:01 ` [PATCH 2/4] block: check virt boundary in bio_will_gap() Ming Lei
2016-02-15 8:22 ` Sagi Grimberg
2016-02-15 10:27 ` Ming Lei
2016-02-15 20:27 ` Sagi Grimberg
2016-02-16 13:05 ` Ming Lei
2016-02-16 13:08 ` Ming Lei
2016-02-15 8:33 ` Sagi Grimberg [this message]
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