drbd: fix potential data corruption and protocol error

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

diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index c312a3b..2aee581 100644 (file)
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -1729,7 +1729,7 @@ static int _drbd_send_bio(struct drbd_conf *mdev, struct bio *bio)
        struct bio_vec *bvec;
        int i;
        /* hint all but last page with MSG_MORE */
-       __bio_for_each_segment(bvec, bio, i, 0) {
+       bio_for_each_segment(bvec, bio, i) {
                int err;
 
                err = _drbd_no_send_page(mdev, bvec->bv_page,
@@ -1746,7 +1746,7 @@ static int _drbd_send_zc_bio(struct drbd_conf *mdev, struct bio *bio)
        struct bio_vec *bvec;
        int i;
        /* hint all but last page with MSG_MORE */
-       __bio_for_each_segment(bvec, bio, i, 0) {
+       bio_for_each_segment(bvec, bio, i) {
                int err;
 
                err = _drbd_send_page(mdev, bvec->bv_page,

diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index e263a5f..3adbc5a 100644 (file)
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -304,7 +304,7 @@ void drbd_csum_bio(struct drbd_conf *mdev, struct crypto_hash *tfm, struct bio *
        sg_init_table(&sg, 1);
        crypto_hash_init(&desc);
 
-       __bio_for_each_segment(bvec, bio, i, 0) {
+       bio_for_each_segment(bvec, bio, i) {
                sg_set_page(&sg, bvec->bv_page, bvec->bv_len, bvec->bv_offset);
                crypto_hash_update(&desc, &sg, sg.length);
        }