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-rw-r--r--mm/internal.h9
1 files changed, 4 insertions, 5 deletions
diff --git a/mm/internal.h b/mm/internal.h
index bc0fa9a..d4b807d 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -271,20 +271,19 @@ extern unsigned int munlock_vma_page(struct page *page);
extern void clear_page_mlock(struct page *page);
/*
- * mlock_migrate_page - called only from migrate_page_copy() to
- * migrate the Mlocked page flag; update statistics.
+ * mlock_migrate_page - called only from migrate_misplaced_transhuge_page()
+ * (because that does not go through the full procedure of migration ptes):
+ * to migrate the Mlocked page flag; update statistics.
*/
static inline void mlock_migrate_page(struct page *newpage, struct page *page)
{
if (TestClearPageMlocked(page)) {
- unsigned long flags;
int nr_pages = hpage_nr_pages(page);
- local_irq_save(flags);
+ /* Holding pmd lock, no change in irq context: __mod is safe */
__mod_zone_page_state(page_zone(page), NR_MLOCK, -nr_pages);
SetPageMlocked(newpage);
__mod_zone_page_state(page_zone(newpage), NR_MLOCK, nr_pages);
- local_irq_restore(flags);
}
}
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