From: Török Edwin <edwintorok@gmail.com>
Date: Sun, 23 Nov 2008 11:08:10 +0000 (+0200)
Subject: tracing/stack-tracer: avoid races accessing file
X-Git-Tag: v2.6.29-rc1~586^2~49^8~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e38da59269be8c0196d16dff1be5bb26076afc6a;p=pandora-kernel.git

tracing/stack-tracer: avoid races accessing file

Impact: fix race

vma->vm_file reference is only stable while holding the mmap_sem,
so move usage of it to within the critical section.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
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