From 7faaa5f0bf4db6ac4908038e2139adc46c165ff4 Mon Sep 17 00:00:00 2001
From: Mika Kukkonen <mikukkon@miku.homelinux.net>
Date: Thu, 10 May 2007 22:22:17 -0700
Subject: [PATCH] Bug in mm/thrash.c function grab_swap_token()
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Following bug was uncovered by compiling with '-W' flag:

  CC      mm/thrash.o
mm/thrash.c: In function ‘grab_swap_token’:
mm/thrash.c:52: warning: comparison of unsigned expression < 0 is always false

Variable token_priority is unsigned, so decrementing first and then
checking the result does not work; fixed by reversing the test, patch
attached (compile tested only).

I am not sure if likely() makes much sense in this new situation, but
I'll let somebody else to make a decision on that.

Signed-off-by: Mika Kukkonen <mikukkon@iki.fi>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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