linux-ext4 - Re: bio splits unnecessarily due to BH

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Date:	Wed, 10 Apr 2013 11:59:17 +0900
From:	Kazuya Mio <k-mio@...jp.nec.com>
To:	Jan Kara <jack@...e.cz>
CC:	akpm@...ux-foundation.org, adilger.kernel@...ger.ca,
	linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: bio splits unnecessarily due to BH_Boundary in ext3 direct I/O

2013/04/10 0:40, Jan Kara wrote:
>   Ah, thanks for pointing that out. It took me a while to get things
> correct but with the attached patch (on top of the first patch), I'm
> getting all the bios with maximum size. I've also checked that for direct
> IO on ramdisk, I get about 3x faster IO on ext3 with both patches applied.
> I also get a decent 10% speedup of dio reads on standard harddrive.

I made sure that the problem I reported was completely fixed.
Thank you for your help.

Regards,
Kazuya Mio

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