From: Alasdair G Kergon <agk@redhat.com>
Date: Fri, 8 Jul 2005 00:59:34 +0000 (-0700)
Subject: [PATCH] device-mapper: dm-raid1: Limit bios to size of mirror region
X-Git-Tag: v2.6.13-rc3~114
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d88854f08961d26f3a63cfae7972188d26a128e4;p=pandora-kernel.git

[PATCH] device-mapper: dm-raid1: Limit bios to size of mirror region

Set the target's split_io field when building a dm-mirror device so
incoming bios won't span the mirror's internal regions.  Without this,
regions can be accessed while not holding correct locks and data corruption
is possible.

Reported-By: "Zhao Qian" <zhaoqian@aaastor.com>
From: Kevin Corry <kevcorry@us.ibm.com>
Signed-Off-By: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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