From: Ted Ts'o <tytso@mit.edu>
To: Eric Sandeen <sandeen@redhat.com>
Cc: ext4 development <linux-ext4@vger.kernel.org>
Subject: Re: [PATCH V3 RESEND 2] ext4: serialize unaligned asynchronous DIO
Date: Sun, 6 Feb 2011 21:33:36 -0500 [thread overview]
Message-ID: <20110207023336.GI10402@thunk.org> (raw)
In-Reply-To: <4D39CFEE.6070403@redhat.com>
On Fri, Jan 21, 2011 at 12:26:54PM -0600, Eric Sandeen wrote:
> ext4 has a data corruption case when doing non-block-aligned
> asynchronous direct IO into a sparse file, as demonstrated
> by xfstest 240.
Hey Eric,
One question about this patch. You are currently using a hashed array
of size 37 for the waitqueue; what about using a similarly sized
hashed array for the aio_mutex? We only take it for unaligned
mutexes, and I'm trying to work on reducing the size of ext4 inode,
since it gets rather large in the inode cache....
- Ted
next prev parent reply other threads:[~2011-02-07 2:33 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-13 22:23 [PATCH] ext4: serialize unaligned asynchronous DIO Eric Sandeen
2011-01-14 4:15 ` Ted Ts'o
2011-01-14 4:41 ` Eric Sandeen
2011-01-14 17:28 ` [PATCH V2] " Eric Sandeen
2011-01-18 16:23 ` Eric Sandeen
2011-01-21 16:00 ` Eric Sandeen
2011-01-21 18:26 ` [PATCH V3 RESEND 2] " Eric Sandeen
2011-01-21 23:27 ` Ted Ts'o
2011-02-07 2:33 ` Ted Ts'o [this message]
2011-02-07 15:59 ` Ted Ts'o
2011-02-07 17:58 ` Eric Sandeen
2011-02-07 22:18 ` Mingming Cao
2012-02-23 13:23 ` backport "ext4: serialize unaligned asynchronous DIO" to 2.6.32 Philipp Hahn
2012-02-23 15:15 ` Eric Sandeen
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