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Commit 114d4b79 authored by Cody P Schafer's avatar Cody P Schafer Committed by Linus Torvalds
Browse files

mmzone: note that node_size_lock should be manipulated via pgdat_resize_lock() 



Signed-off-by: default avatarCody P Schafer <cody@linux.vnet.ibm.com>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 72c3b51b

include/linux/mmzone.h

+3 −0
Original line number Diff line number Diff line
@@ -733,6 +733,9 @@ 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;