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authorLinus Torvalds <torvalds@linux-foundation.org>2011-01-15 13:01:14 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-15 13:01:14 -0800
commit1b59be2a6cdcb5a12e18d8315c07c94a624de48f (patch)
tree5cf48d9f94d85e9b1f984610b6868ad100ca1916 /include
parentf9ee7f60d6f37ae0184812b4c59b3869f875768b (diff)
parent2ed1c5257b5d669df2a64bd53e61dc19c7d936cd (diff)
Merge branch 'slab/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6
* 'slab/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6: Update Pekka's email address in MAINTAINERS mm/slab.c: make local symbols static slub: Avoid use of slub_lock in show_slab_objects() memory hotplug: one more lock on memory hotplug
Diffstat (limited to 'include')
-rw-r--r--include/linux/memory_hotplug.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index 24376fe7ee68..8122018d3000 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -165,6 +165,12 @@ extern void register_page_bootmem_info_node(struct pglist_data *pgdat);
extern void put_page_bootmem(struct page *page);
#endif
+/*
+ * Lock for memory hotplug guarantees 1) all callbacks for memory hotplug
+ * notifier will be called under this. 2) offline/online/add/remove memory
+ * will not run simultaneously.
+ */
+
void lock_memory_hotplug(void);
void unlock_memory_hotplug(void);