From: Michael S. Tsirkin <mst@redhat.com>
Date: Sun, 26 May 2013 14:31:38 +0000 (+0300)
Subject: powerpc: uaccess s/might_sleep/might_fault/
X-Git-Tag: omap-for-v3.11/fixes-for-merge-window~60^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1af1717dbf96eba8a74a2d6a99e75a7795075a02;p=pandora-kernel.git

powerpc: uaccess s/might_sleep/might_fault/

The only reason uaccess routines might sleep
is if they fault. Make this explicit.

Arnd Bergmann suggested that the following code
	if (!is_kernel_addr((unsigned long)__pu_addr))
		might_fault();
can be further simplified by adding a version of might_fault
that includes the kernel addr check.

Will be considered as a further optimization in future.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1369577426-26721-7-git-send-email-mst@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---

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