From: NeilBrown <neilb@suse.de>
Date: Mon, 18 Aug 2014 03:56:38 +0000 (+1000)
Subject: md/raid10: fix memory leak when reshaping a RAID10.
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~39^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ce0b0a46955d1bb389684a2605dbcaa990ba0154;p=pandora-kernel.git

md/raid10: fix memory leak when reshaping a RAID10.

raid10 reshape clears unwanted bits from a bio->bi_flags using
a method which, while clumsy, worked until 3.10 when BIO_OWNS_VEC
was added.
Since then it clears that bit but shouldn't.  This results in a
memory leak.

So change to used the approved method of clearing unwanted bits.

As this causes a memory leak which can consume all of memory
the fix is suitable for -stable.

Fixes: a38352e0ac02dbbd4fa464dc22d1352b5fbd06fd
Cc: stable@vger.kernel.org (v3.10+)
Reported-by: mdraid.pkoch@dfgh.net (Peter Koch)
Signed-off-by: NeilBrown <neilb@suse.de>
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