From: Kazuya Mio <k-mio@sx.jp.nec.com>
To: Jan Kara <jack@suse.cz>
Cc: akpm@linux-foundation.org, adilger.kernel@dilger.ca,
linux-ext4@vger.kernel.org
Subject: Re: bio splits unnecessarily due to BH_Boundary in ext3 direct I/O
Date: Tue, 19 Mar 2013 17:36:17 +0900 [thread overview]
Message-ID: <51482381.7010508@sx.jp.nec.com> (raw)
In-Reply-To: <20130307104854.GB6723@quack.suse.cz>
2013/03/07 19:48, Jan Kara wrote:
> Then we properly mark bio should be submitted only if we are mapping last
> part of the mapped extent from the filesystem. Can you give this change a
> try (full patch with changelog attached)?
Sorry for the late response.
After applying your patch, the problem I reported was fixed.
One matter for concern is that submit_bio() is called twice per one buffer_head.
Because submit_page_section() calls dio_bio_submit() before adding
the old page (sdio->cur_page) and the current page to struct dio_submit.
Does it work as required?
Regards,
Kazuya Mio
next prev parent reply other threads:[~2013-03-19 8:45 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-07 8:36 bio splits unnecessarily due to BH_Boundary in ext3 direct I/O Kazuya Mio
2013-03-07 10:48 ` Jan Kara
2013-03-19 8:36 ` Kazuya Mio [this message]
2013-03-19 19:31 ` Jan Kara
2013-03-21 8:43 ` Kazuya Mio
2013-03-29 17:15 ` Jan Kara
2013-04-01 8:25 ` Kazuya Mio
2013-04-09 15:40 ` Jan Kara
2013-04-10 2:59 ` Kazuya Mio
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