From: Mike Snitzer <snitzer@redhat.com>
Date: Wed, 26 Sep 2012 22:45:46 +0000 (+0100)
Subject: dm thin: tidy discard support
X-Git-Tag: v3.6~8^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9bc142dd755d360c08a91ecb107d218787a2e9db;p=pandora-kernel.git

dm thin: tidy discard support

A little thin discard code refactoring to make the next patch (dm thin:
fix discard support for data devices) more readable.
Pull out a couple of functions (and uses bools instead of unsigned for
features).

No functional changes.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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