summaryrefslogtreecommitdiff
path: root/include/linux/mmzone.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/mmzone.h')
-rw-r--r--include/linux/mmzone.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 9ec7cff..e511f94 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -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;