linux-ext4 - Re: [PATCH 2/2] ext4: reserve hole in the migration to non-extent based file

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Message-ID: <20150704160539.GE21206@dhcp-13-216.nay.redhat.com>
Date:	Sun, 5 Jul 2015 00:05:39 +0800
From:	Eryu Guan <guaneryu@...il.com>
To:	Theodore Ts'o <tytso@....edu>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: [PATCH 2/2] ext4: reserve hole in the migration to non-extent
 based file

On Sat, Jul 04, 2015 at 12:33:29AM -0400, Theodore Ts'o wrote:
> Applied, although I reworded the commit description a little:
> 
> ext4: correctly migrate a file with a hole at the beginning
> 
> Currently ext4_ind_migrate() doesn't correctly handle a file which
> contains a hole at the beginning of the file.  This caused the migration
> to be done incorrectly, and then if there is a subsequent following
> delayed allocation write to the "hole", this would reclaim the same data
> blocks again and results in fs corruption.

Clearly better than my wording, thanks!

Eryu
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