From: Hugh Dickins <hughd@google.com>
Date: Tue, 10 May 2011 00:44:42 +0000 (-0700)
Subject: vm: fix vm_pgoff wrap in upward expansion
X-Git-Tag: v2.6.39-rc7~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=42c36f63ac1366ab0ecc2d5717821362c259f517;p=pandora-kernel.git

vm: fix vm_pgoff wrap in upward expansion

Commit a626ca6a6564 ("vm: fix vm_pgoff wrap in stack expansion") fixed
the case of an expanding mapping causing vm_pgoff wrapping when you had
downward stack expansion.  But there was another case where IA64 and
PA-RISC expand mappings: upward expansion.

This fixes that case too.

Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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