From: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Date: Tue, 31 Oct 2006 06:07:07 +0000 (-0800)
Subject: [PATCH] uml ubd driver: change ubd_lock to be a mutex
X-Git-Tag: v2.6.19-rc5~119
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d7fb2c3865ca0f95d92e2864c3dc9220789d83f5;p=pandora-kernel.git

[PATCH] uml ubd driver: change ubd_lock to be a mutex

This lock protects ubd setup and teardown, so is only used in process context;
beyond that, during such setup memory allocations must be performed and some
generic functions which can sleep must be called (such as add_disk()).  So the
only correct solution is to make it a mutex instead of a spin_lock.  No other
change is done - this lock must be acquired in different places but it's done
afterwards.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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