From: Chris Wright <chrisw@osdl.org>
Date: Wed, 22 Jun 2005 00:14:52 +0000 (-0700)
Subject: [PATCH] mmap topdown fix for large stack limit, large allocation
X-Git-Tag: v2.6.13-rc4~130^2~202^2~150
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=73219d178051691a56d57184d8c7f6d0cbe3c5c1;p=pandora-kernel.git

[PATCH] mmap topdown fix for large stack limit, large allocation

The topdown changes in 2.6.12-rc1 can cause large allocations with large
stack limit to fail, despite there being space available.  The
mmap_base-len is only valid when len >= mmap_base.  However, nothing in
topdown allocator checks this.  It's only (now) caught at higher level,
which will cause allocation to simply fail.  The following change restores
the fallback to bottom-up path, which will allow large allocations with
large stack limit to potentially still succeed.

Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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