From: Russ Anderson <rja@sgi.com>
Date: Thu, 10 May 2012 20:01:46 +0000 (-0700)
Subject: mm: nobootmem: fix sign extend problem in __free_pages_memory()
X-Git-Tag: v3.2.18~47
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=eceb33799bdb35305f9af781d07caa10d05958fe;p=pandora-kernel.git

mm: nobootmem: fix sign extend problem in __free_pages_memory()

commit 6bc2e853c6b46a6041980d58200ad9b0a73a60ff upstream.

Systems with 8 TBytes of memory or greater can hit a problem where only
the the first 8 TB of memory shows up.  This is due to "int i" being
smaller than "unsigned long start_aligned", causing the high bits to be
dropped.

The fix is to change `i' to unsigned long to match start_aligned
and end_aligned.

Thanks to Jack Steiner for assistance tracking this down.

Signed-off-by: Russ Anderson <rja@sgi.com>
Cc: Jack Steiner <steiner@sgi.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Gavin Shan <shangw@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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