From: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Date: Mon, 29 Apr 2013 22:08:23 +0000 (-0700)
Subject: mm: madvise: complete input validation before taking lock
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~128^2~23
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=84d96d897671cfb386e722acbefdb3a79e115a8a;p=pandora-kernel.git

mm: madvise: complete input validation before taking lock

In madvise(), there doesn't seem to be any reason for taking the
&current->mm->mmap_sem before start and len_in have been validated.
Incidentally, this removes the need for the out: label.

[akpm@linux-foundation.org: s/out_plug/out/, per David]
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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