linux-ext4 - Re: [PATCH 07/39] tune2fs: speed up rewriting extent tree when enabling metadata

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Message-ID: <20141104165223.GH30614@thunk.org>
Date:	Tue, 4 Nov 2014 11:52:23 -0500
From:	Theodore Ts'o <tytso@....edu>
To:	"Darrick J. Wong" <darrick.wong@...cle.com>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: [PATCH 07/39] tune2fs: speed up rewriting extent tree when
 enabling metadata_csum

On Sat, Oct 25, 2014 at 01:57:08PM -0700, Darrick J. Wong wrote:
> When enabling checksums, tune2fs naively rewrites every extent in the
> entire tree!  This is unnecessary since we only need to rewrite each
> extent tree block; therefore, only rewrite the extent if it's the
> first one in an internal extent tree block.
> 
> Also, don't bother iterating the extent tree when clearing checksums.
> 
> Signed-off-by: Darrick J. Wong <darrick.wong@...cle.com>

Applied, thanks.

					- Ted
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