From: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Date: Mon, 5 Jun 2006 10:09:01 +0000 (+0200)
Subject: [PATCH] blk_start_queue() must be called with irq disabled - add warning
X-Git-Tag: v2.6.18-rc1~1081^2~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a038e2536472b4dd932399b5277e65f188811de5;p=pandora-kernel.git

[PATCH] blk_start_queue() must be called with irq disabled - add warning

The queue lock can be taken from interrupts so it must always be taken with
irq disabling primitives.  Some primitives already verify this.
blk_start_queue() is called under this lock, so interrupts must be
disabled.

Also document this requirement clearly in blk_init_queue(), where the queue
spinlock is set.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jens Axboe <axboe@suse.de>
---

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