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-rw-r--r--drivers/block/drbd/drbd_receiver.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index 93106fb92be..c7285e16b66 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -1331,6 +1331,9 @@ static int drbd_drain_block(struct drbd_conf *mdev, int data_size)
int rr, rv = 1;
void *data;
+ if (!data_size)
+ return TRUE;
+
page = drbd_pp_alloc(mdev, 1);
data = kmap(page);
@@ -1946,7 +1949,7 @@ static int receive_DataRequest(struct drbd_conf *mdev, struct p_header *h)
"no local data.\n");
drbd_send_ack_rp(mdev, h->command == P_DATA_REQUEST ? P_NEG_DREPLY :
P_NEG_RS_DREPLY , p);
- return TRUE;
+ return drbd_drain_block(mdev, h->length - brps);
}
/* GFP_NOIO, because we must not cause arbitrary write-out: in a DRBD