linux-ext4 - Re: [RFC 4/5] MMC: Adjust unaligned write accesses.

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Message-ID: <AANLkTikZFYdhLLBLGp3=kc-UTZLQwUb-_sjYZ2nDd3Wc@mail.gmail.com>
Date:	Tue, 22 Mar 2011 02:18:42 -0500
From:	Andrei Warkentin <andreiw@...orola.com>
To:	Andreas Dilger <adilger@...mcloud.com>
Cc:	Arnd Bergmann <arnd@...db.de>,
	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>
Subject: Re: [RFC 4/5] MMC: Adjust unaligned write accesses.

On Mon, Mar 21, 2011 at 6:45 PM, Andreas Dilger <adilger@...mcloud.com> wrote:
> I was just looking at the test data. I wonder of this slowness might also be due to sync on ext4 using a barrier, and not on ext2/3?

Indeed. ext4 mounts by default with barrier=1...   I'll collect some
comparison data with various tunables. Sorry.

A
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