drbd: Make sure to resync all of the new storage upon online resize

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/block/drbd/drbd_bitmap.c b/drivers/block/drbd/drbd_bitmap.c
index 695fb64cba00..178cf1642b2d 100644
--- a/drivers/block/drbd/drbd_bitmap.c
+++ b/drivers/block/drbd/drbd_bitmap.c
@@ -84,6 +84,9 @@ struct drbd_bitmap {
 #define BM_MD_IO_ERROR  1
 #define BM_P_VMALLOCED  2
 
+int __bm_change_bits_to(struct drbd_conf *mdev, const unsigned long s,
+                               unsigned long e, int val, const enum km_type km);
+
 static int bm_is_locked(struct drbd_bitmap *b)
 {
         return test_bit(BM_LOCKED, &b->bm_flags);
@@ -529,6 +532,9 @@ int drbd_bm_resize(struct drbd_conf *mdev, sector_t capacity, int set_new_bits)
                 if (set_new_bits) {
                         bm_memset(b, owords, 0xff, words-owords);
                         b->bm_set += bits - obits;
+                        __bm_change_bits_to(mdev, obits,
+                                            ALIGN(obits, BITS_PER_LONG),
+                                            1, KM_IRQ1);
                 } else
                         bm_memset(b, owords, 0x00, words-owords);