From: NeilBrown <neilb@suse.de>
Date: Fri, 6 Jan 2006 08:20:37 +0000 (-0800)
Subject: [PATCH] md: fix possible problem in raid1/raid10 error overwriting
X-Git-Tag: v2.6.16-rc1~936^2~24
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=097426f689f179747f3cd6b4749eb2a6b605702d;p=pandora-kernel.git

[PATCH] md: fix possible problem in raid1/raid10 error overwriting

The code to overwrite/reread for addressing read errors in raid1/raid10
currently assumes that the read will not alter the buffer which could be used
to write to the next device.  This is not a safe assumption to make.

So we split the loops into a overwrite loop and a separate re-read loop, so
that the writing is complete before reading is attempted.

Cc: Paul Clements <paul.clements@steeleye.com>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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