linux-kernel - [PATCH 3/4] mmzone: note that node_size_lock should be manipulated via pgdat_resize

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Message-Id: <1367446635-12856-4-git-send-email-cody@linux.vnet.ibm.com>
Date:	Wed,  1 May 2013 15:17:14 -0700
From:	Cody P Schafer <cody@...ux.vnet.ibm.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Linux MM <linux-mm@...ck.org>, LKML <linux-kernel@...r.kernel.org>,
	Cody P Schafer <cody@...ux.vnet.ibm.com>
Subject: [PATCH 3/4] mmzone: note that node_size_lock should be manipulated via pgdat_resize_lock()

Signed-off-by: Cody P Schafer <cody@...ux.vnet.ibm.com>
---
 include/linux/mmzone.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index afd0aa5..45be383 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -716,6 +716,8 @@ typedef struct pglist_data {
 	 * or node_spanned_pages stay constant.  Holding this will also
 	 * guarantee that any pfn_valid() stays that way.
 	 *
+	 * Use pgdat_resize_lock() and pgdat_resize_unlock() to manipulate.
+	 *
 	 * Updaters of any of these fields also must hold
 	 * lock_memory_hotplug().
 	 *
-- 
1.8.2.2

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