linux-kernel - [tip:x86/numa] x86-32, numa: Align pgdat size while initializing alloc

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Date:	Thu, 7 Apr 2011 02:04:24 GMT
From:	tip-bot for Tejun Heo <tj@...nel.org>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	yinghai@...nel.org, tj@...nel.org, tglx@...utronix.de,
	rientjes@...gle.com
Subject: [tip:x86/numa] x86-32, numa: Align pgdat size while initializing alloc_remap

Commit-ID:  a6c24f7a705d939ddd2fcaa443fa3d8e852b933d
Gitweb:     http://git.kernel.org/tip/a6c24f7a705d939ddd2fcaa443fa3d8e852b933d
Author:     Tejun Heo <tj@...nel.org>
AuthorDate: Tue, 5 Apr 2011 00:23:48 +0200
Committer:  H. Peter Anvin <hpa@...or.com>
CommitDate: Wed, 6 Apr 2011 17:56:52 -0700

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>
Link: http://lkml.kernel.org/r/1301955840-7246-3-git-send-email-tj@kernel.org
Acked-by: Yinghai Lu <yinghai@...nel.org>
Cc: David Rientjes <rientjes@...gle.com>
Signed-off-by: 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;
--
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