linux-ext4 - Re: [PATCH] ext4: remove unneeded call to ext4_es_remove

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Message-ID: <20130427071109.GA25329@gmail.com>
Date:	Sat, 27 Apr 2013 15:11:09 +0800
From:	Zheng Liu <gnehzuil.liu@...il.com>
To:	Ashish Sangwan <ashishsangwan2@...il.com>
Cc:	Theodore Ts'o <tytso@....edu>,
	ext4 development <linux-ext4@...r.kernel.org>,
	wenqing.lz@...bao.com, Ashish Sangwan <a.sangwan@...sung.com>,
	Namjae Jeon <namjae.jeon@...sung.com>
Subject: Re: [PATCH] ext4: remove unneeded call to ext4_es_remove_extent in
 punch hole

On Sat, Apr 27, 2013 at 12:20:22PM +0530, Ashish Sangwan wrote:
> >The commit
> > log is right before we use extent status tree to track all extent
> > information.  In dev branch of ext4 tree, we track all extent status in
> > status tree.  So we need to remove extent from status tree in punch
> > hole.
> I was of the opinion that filemap_write_and_wait_range will remove the
> extent from status tree if its still there.
> ok, I will check the dev branch.

Ah, please bear with me.  In mainline kernel 3.9-rcX, we have used
status tree to track all extent status.  You could also check 3.9-rcX
kernel.  Please let me know if I miss something.

Thanks,
                                                - Zheng
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