From: Neil Brown <neilb@suse.de>
Date: Mon, 26 Jun 2006 07:27:26 +0000 (-0700)
Subject: [PATCH] dm: mirror sector offset fix
X-Git-Tag: v2.6.18-rc1~661
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e4c8b3ba34cc1aeab451c7a5cc843c5fd62cbe3d;p=pandora-kernel.git

[PATCH] dm: mirror sector offset fix

The device-mapper core does not perform any remapping of bios before passing
them to the targets.  If a particular mapping begins part-way into a device,
targets obtain the sector relative to the start of the mapping by subtracting
ti->begin.

The dm-raid1 target didn't do this everywhere: this patch fixes it, taking
care to subtract ti->begin exactly once for each bio.

[akpm: too late for 2.6.17 - suitable for 2.6.17.x after it has settled]

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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