From: Kent Overstreet <koverstreet@google.com>
Date: Wed, 5 Jun 2013 13:24:39 +0000 (-0700)
Subject: bcache: Write out full stripes
X-Git-Tag: v3.11-rc3~32^2~1^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=72c270612bd33192fa836ad0f2939af1ca218292;p=pandora-kernel.git

bcache: Write out full stripes

Now that we're tracking dirty data per stripe, we can add two
optimizations for raid5/6:

 * If a stripe is already dirty, force writes to that stripe to
   writeback mode - to help build up full stripes of dirty data

 * When flushing dirty data, preferentially write out full stripes first
   if there are any.

Signed-off-by: Kent Overstreet <koverstreet@google.com>
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