linux-kernel - [PATCH 26/39] nobootmem: use lmb.default_alloc_limit in alloc

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Message-Id: <1270793048-23796-27-git-send-email-yinghai@kernel.org>
Date:	Thu,  8 Apr 2010 23:03:55 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	David Miller <davem@...emloft.net>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Johannes Weiner <hannes@...xchg.org>,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
	Yinghai Lu <yinghai@...nel.org>
Subject: [PATCH 26/39] nobootmem: use lmb.default_alloc_limit in alloc_bootmem path

Generic version __lmb_find_area() is going from high to low, and for 32bit
active_region for 32bit does include high pages

need to replace the limit with lmb.default_alloc_limit, aka get_max_mapped()

with this patch, x86 32bit could use generic version of __lmb_find_area()

Signed-off-by: Yinghai Lu <yinghai@...nel.org>
---
 mm/page_alloc.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 79bd44b..256aed0 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3445,6 +3445,9 @@ void * __init __alloc_memory_core_early(int nid, u64 size, u64 align,
 
 	u64 addr;
 
+	if (limit > lmb.default_alloc_limit)
+		limit = lmb.default_alloc_limit;
+
 	addr = find_memory_core_early(nid, size, align, goal, limit);
 
 	if (addr == -1ULL)
-- 
1.6.4.2

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