From: Joe Thornber <ejt@redhat.com>
Date: Mon, 30 Jun 2014 17:26:30 +0000 (-0400)
Subject: dm io: simplify dec_count and sync_io
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~72^2~14
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=97e7cdf12ba324b599d404172c5899185ef2bbde;p=pandora-kernel.git

dm io: simplify dec_count and sync_io

Remove the io struct off the stack in sync_io() and allocate it from
the mempool like is done in async_io().

dec_count() now always calls a callback function and always frees the io
struct back to the mempool (so sync_io and async_io share this pattern).

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