From: Cody P Schafer <cody@linux.vnet.ibm.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: David Rientjes <rientjes@google.com>,
Linux MM <linux-mm@kvack.org>,
LKML <linux-kernel@vger.kernel.org>,
Cody P Schafer <cody@linux.vnet.ibm.com>
Subject: [PATCH v3 2/4] mmzone: note that node_size_lock should be manipulated via pgdat_resize_lock()
Date: Mon, 13 May 2013 16:13:05 -0700 [thread overview]
Message-ID: <1368486787-9511-3-git-send-email-cody@linux.vnet.ibm.com> (raw)
In-Reply-To: <1368486787-9511-1-git-send-email-cody@linux.vnet.ibm.com>
Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com>
---
include/linux/mmzone.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index fc859a0c..41557be 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -716,6 +716,9 @@ typedef struct pglist_data {
* or node_spanned_pages stay constant. Holding this will also
* guarantee that any pfn_valid() stays that way.
*
+ * pgdat_resize_lock() and pgdat_resize_unlock() are provided to
+ * manipulate node_size_lock without checking for CONFIG_MEMORY_HOTPLUG.
+ *
* Nests above zone->lock and zone->span_seqlock
*/
spinlock_t node_size_lock;
--
1.8.2.2
--
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next prev parent reply other threads:[~2013-05-13 23:13 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-13 23:13 [PATCH v3 0/4] misc patches related to resizing nodes & zones Cody P Schafer
2013-05-13 23:13 ` [PATCH v3 1/4] mm: fix comment referring to non-existent size_seqlock, change to span_seqlock Cody P Schafer
2013-05-13 23:13 ` Cody P Schafer [this message]
2013-05-13 23:13 ` [PATCH v3 3/4] memory_hotplug: use pgdat_resize_lock() in online_pages() Cody P Schafer
2013-05-15 23:20 ` Andrew Morton
2013-05-16 21:05 ` David Rientjes
2013-05-13 23:13 ` [PATCH v3 4/4] memory_hotplug: use pgdat_resize_lock() in __offline_pages() Cody P Schafer
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