linux-ext4 - Re: [PATCH] ext4: expand commit callback

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Message-ID: <20120213210225.GA21641@thunk.org>
Date:	Mon, 13 Feb 2012 16:02:25 -0500
From:	Ted Ts'o <tytso@....edu>
To:	Bobi Jam <bobijam@...mcloud.com>
Cc:	linux-ext4@...r.kernel.org, Andreas Dilger <adilger@...mcloud.com>
Subject: Re: [PATCH] ext4: expand commit callback

On Wed, Oct 26, 2011 at 06:49:16PM +0800, Bobi Jam wrote:
> The per-commit callback is now used by mballoc code to manage free
> space bitmaps after deleted blocks have been released. This patch
> expand it to contain multiple different callbacks.
> 
> Signed-off-by: Bobi Jam <bobijam@...mcloud.com>
> Signed-off-by: Andreas Dilger <adilger@...mcloud.com>

Thanks, applied.

Note: since this callback is called *after* the commit is completed,
we can't really use this to do things like compute metadata checksums
or update atimes more efficiently, since those sorts of things have to
happen *before* we actually finish up the commit.

					- Ted
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