From: Michal Schmidt <mschmidt@redhat.com>
Date: Wed, 6 Feb 2008 09:37:07 +0000 (-0800)
Subject: proc: loadavg reading race
X-Git-Tag: v2.6.25-rc1~723
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=07a154b2bb9b528a39ddc777399482c1fa27fdb8;p=pandora-kernel.git

proc: loadavg reading race

The avenrun[] values are supposed to be protected by xtime_lock.
loadavg_read_proc does not use it.  Theoretically this may result in an
occasional glitch when the value read from /proc/loadavg would be as much
as 1<<11 times higher than it should be.

Signed-off-by: Michal Schmidt <mschmidt@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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