From: Kent Overstreet <kent.overstreet@gmail.com>
To: Ming Lei <ming.lei@canonical.com>
Cc: Jens Axboe <axboe@fb.com>,
linux-kernel@vger.kernel.org, linux-block@vger.kernel.org,
Christoph Hellwig <hch@infradead.org>,
Eric Wheeler <bcache@lists.ewheeler.net>,
Sebastian Roesner <sroesner-kernelorg@roesner-online.de>,
"4.2+" <stable@vger.kernel.org>, Shaohua Li <shli@fb.com>
Subject: Re: [PATCH] block: make sure big bio is splitted into at most 256 bvecs
Date: Tue, 5 Apr 2016 16:30:25 -0800 [thread overview]
Message-ID: <20160406003025.GC31161@kmo-pixel> (raw)
In-Reply-To: <1459878246-9249-1-git-send-email-ming.lei@canonical.com>
On Wed, Apr 06, 2016 at 01:44:06AM +0800, Ming Lei wrote:
> After arbitrary bio size is supported, the incoming bio may
> be very big. We have to split the bio into small bios so that
> each holds at most BIO_MAX_PAGES bvecs for safety reason, such
> as bio_clone().
>
> This patch fixes the following kernel crash:
Ming, let's not do it this way; drivers that don't clone biovecs are the norm -
instead, md has its own queue limits that it ought to be setting up correctly.
next prev parent reply other threads:[~2016-04-06 0:30 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-05 17:44 [PATCH] block: make sure big bio is splitted into at most 256 bvecs Ming Lei
2016-04-05 18:27 ` Shaohua Li
2016-04-06 0:27 ` Kent Overstreet
2016-04-06 0:30 ` Shaohua Li
2016-04-06 0:36 ` Kent Overstreet
2016-04-06 0:41 ` Shaohua Li
2016-04-06 0:45 ` Kent Overstreet
2016-04-06 0:59 ` Shaohua Li
2016-04-06 1:05 ` Ming Lei
2016-04-06 0:47 ` Ming Lei
2016-04-06 1:04 ` Shaohua Li
2016-04-06 1:11 ` Ming Lei
2016-04-06 0:30 ` Kent Overstreet [this message]
2016-04-06 0:59 ` Ming Lei
2016-04-06 1:10 ` Kent Overstreet
2016-04-06 1:20 ` Ming Lei
2016-04-06 1:28 ` Kent Overstreet
2016-04-06 1:51 ` Ming Lei
2016-04-06 2:22 ` Kent Overstreet
2016-04-06 2:30 ` Ming Lei
2016-04-06 2:34 ` Kent Overstreet
2016-04-06 2:37 ` Ming Lei
2016-04-06 2:40 ` Kent Overstreet
2016-04-06 2:51 ` Ming Lei
2016-04-06 2:58 ` Kent Overstreet
2016-04-06 1:02 ` Ming Lei
2016-04-07 1:48 ` Eric Wheeler
2016-04-07 1:36 ` Eric Wheeler
2016-04-07 1:49 ` Ming Lei
2016-04-07 1:56 ` Eric Wheeler
2016-04-07 2:16 ` Ming Lei
2016-04-07 23:29 ` Eric Wheeler
2016-04-08 0:21 ` Ming Lei
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