From: NeilBrown <neilb@suse.de>
Date: Mon, 2 Feb 2015 00:49:10 +0000 (+1100)
Subject: md/raid5: need_this_block: start simplifying the last two conditions.
X-Git-Tag: omap-for-v4.1/prcm-dts-mfd-syscon-fix~104^2~23
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a9d56950f763fa3e9d831541e62d223197d2ff60;p=pandora-kernel.git

md/raid5: need_this_block: start simplifying the last two conditions.

Both the last two cases are only relevant if something has failed and
something needs to be written (but not over-written), and if it is OK
to pre-read blocks at this point.  So factor out those tests and
explain them.

Signed-off-by: NeilBrown <neilb@suse.de>
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