From: NeilBrown <neilb@suse.de>
Date: Mon, 10 Jul 2006 11:44:15 +0000 (-0700)
Subject: [PATCH] md: delay starting md threads until array is completely setup
X-Git-Tag: v2.6.18-rc2~223
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0b8c9de05c2a860fe6b02fedcb48763bcee648b3;p=pandora-kernel.git

[PATCH] md: delay starting md threads until array is completely setup

When an array is started we start one or two threads (two if there is a
reshape or recovery that needs to be completed).

We currently start these *before* the array is completely set up and in
particular before queue->queuedata is set.  If the thread actually starts
very quickly on another CPU, we can end up dereferencing queue->queuedata
and oops.

This patch also makes sure we don't try to start a recovery if a reshape is
being restarted.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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