Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

[sfrench/cifs-2.6.git] / mm / page_poison.c

diff --git a/mm/page_poison.c b/mm/page_poison.c
index aa2b3d34e8eaa26018267314fe88568b382dbebc..f0c15e9017c02236e56cb71948d992c584226d0c 100644 (file)
--- a/mm/page_poison.c
+++ b/mm/page_poison.c
@@ -17,11 +17,16 @@ static int __init early_page_poison_param(char *buf)
 }
 early_param("page_poison", early_page_poison_param);
 
+/**
+ * page_poisoning_enabled - check if page poisoning is enabled
+ *
+ * Return true if page poisoning is enabled, or false if not.
+ */
 bool page_poisoning_enabled(void)
 {
        /*
         * Assumes that debug_pagealloc_enabled is set before
-        * free_all_bootmem.
+        * memblock_free_all.
         * Page poisoning is debug page alloc for some arches. If
         * either of those options are enabled, enable poisoning.
         */
@@ -29,6 +34,7 @@ bool page_poisoning_enabled(void)
                (!IS_ENABLED(CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC) &&
                debug_pagealloc_enabled()));
 }
+EXPORT_SYMBOL_GPL(page_poisoning_enabled);
 
 static void poison_page(struct page *page)
 {