linux-kernel - [PATCH 02/14] x86-32, NUMA: Align pgdat size while initializing alloc

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Date:	Tue,  5 Apr 2011 00:23:48 +0200
From:	Tejun Heo <tj@...nel.org>
To:	mingo@...hat.com, hpa@...or.com, tglx@...utronix.de,
	rientjes@...gle.com, yinghai@...nel.org,
	linux-kernel@...r.kernel.org
Cc:	Tejun Heo <tj@...nel.org>
Subject: [PATCH 02/14] x86-32, NUMA: Align pgdat size while initializing alloc_remap

When pgdat is reserved in init_remap_allocator(), PAGE_SIZE aligned
size will be used.  Match the size alignment in initialization to
avoid allocation failure down the road.

Signed-off-by: Tejun Heo <tj@...nel.org>
Cc: Yinghai Lu <yinghai@...nel.org>
Cc: David Rientjes <rientjes@...gle.com>
Cc: Thomas Gleixner <tglx@...utronix.de
Cc: Ingo Molnar <mingo@...hat.com>
Cc: "H. Peter Anvin" <hpa@...or.com>
---
 arch/x86/mm/numa_32.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/arch/x86/mm/numa_32.c b/arch/x86/mm/numa_32.c
index 84aac47..50e8250 100644
--- a/arch/x86/mm/numa_32.c
+++ b/arch/x86/mm/numa_32.c
@@ -287,7 +287,8 @@ static __init unsigned long calculate_numa_remap_pages(void)
 			node_end_pfn[nid] = max_pfn;
 
 		/* ensure the remap includes space for the pgdat. */
-		size = node_remap_size[nid] + sizeof(pg_data_t);
+		size = node_remap_size[nid];
+		size += ALIGN(sizeof(pg_data_t), PAGE_SIZE);
 
 		/* convert size to large (pmd size) pages, rounding up */
 		size = (size + LARGE_PAGE_BYTES - 1) / LARGE_PAGE_BYTES;
-- 
1.7.1

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