1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index be411c12ebbe..8b7f5e0914ad 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1333,6 +1333,8 @@ struct block_device_operations {
         void (*unlock_native_capacity) (struct gendisk *);
         int (*revalidate_disk) (struct gendisk *);
         int (*getgeo)(struct block_device *, struct hd_geometry *);
+        /* this callback is with swap_lock and sometimes page table lock held */
+        void (*swap_slot_free_notify) (struct block_device *, unsigned long);
         struct module *owner;
 };