From: Theodore Ts'o <tytso@mit.edu>
To: Zheng Liu <gnehzuil.liu@gmail.com>
Cc: linux-ext4@vger.kernel.org, Tao Ma <tm@tao.ma>,
Eric Sandeen <sandeen@redhat.com>,
Robin Dong <hao.bigrat@gmail.com>,
Zheng Liu <wenqing.lz@taobao.com>
Subject: Re: [PATCH 3/3 v3] ext4: add dio overwrite nolock
Date: Mon, 9 Jul 2012 11:01:19 -0400 [thread overview]
Message-ID: <20120709150118.GE3649@thunk.org> (raw)
In-Reply-To: <1341152506-32649-4-git-send-email-wenqing.lz@taobao.com>
On Sun, Jul 01, 2012 at 10:21:46PM +0800, Zheng Liu wrote:
> From: Zheng Liu <wenqing.lz@taobao.com>
>
> Aligned and overwrite direct I/O can be parallelized. In ext4_file_dio_write,
> we first check whether these conditions are satisfied or not. If so, we
> take i_data_sem and release i_mutex lock directly. Meanwhile iocb->private is
> set to indicate that this is a dio overwrite, and it will be handled in
> ext4_ext_direct_IO.
>
> CC: Tao Ma <tm@tao.ma>
> CC: Eric Sandeen <sandeen@redhat.com>
> CC: Robin Dong <hao.bigrat@gmail.com>
> Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
Thanks, applied.
- Ted
prev parent reply other threads:[~2012-07-09 15:01 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-01 14:21 [PATCH 0/3 v3] ext4: dio overwrite nolock Zheng Liu
2012-07-01 14:21 ` [PATCH 1/3 v3] ext4: split ext4_file_write into buffered IO and direct IO Zheng Liu
2012-07-09 14:44 ` Theodore Ts'o
2012-07-01 14:21 ` [PATCH 2/3 v3] ext4: add a new flag for ext4_map_blocks Zheng Liu
2012-07-09 14:49 ` Theodore Ts'o
2012-07-01 14:21 ` [PATCH 3/3 v3] ext4: add dio overwrite nolock Zheng Liu
2012-07-09 15:01 ` Theodore Ts'o [this message]
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