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Subject[PATCH 32/54] drbd: _drbd_send_bio(), _drbd_send_zc_bio(): Return 0 upon success and an error code otherwise
Date
From: Andreas Gruenbacher <agruen@linbit.com>

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
---
drivers/block/drbd/drbd_main.c | 30 ++++++++++++++++++------------
1 files changed, 18 insertions(+), 12 deletions(-)

diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 9b53d86..a12cd82 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -1475,12 +1475,15 @@ static int _drbd_send_bio(struct drbd_conf *mdev, struct bio *bio)
int i;
/* hint all but last page with MSG_MORE */
__bio_for_each_segment(bvec, bio, i, 0) {
- if (_drbd_no_send_page(mdev, bvec->bv_page,
- bvec->bv_offset, bvec->bv_len,
- i == bio->bi_vcnt -1 ? 0 : MSG_MORE))
- return 0;
+ int err;
+
+ err = _drbd_no_send_page(mdev, bvec->bv_page,
+ bvec->bv_offset, bvec->bv_len,
+ i == bio->bi_vcnt - 1 ? 0 : MSG_MORE);
+ if (err)
+ return err;
}
- return 1;
+ return 0;
}

static int _drbd_send_zc_bio(struct drbd_conf *mdev, struct bio *bio)
@@ -1489,12 +1492,15 @@ static int _drbd_send_zc_bio(struct drbd_conf *mdev, struct bio *bio)
int i;
/* hint all but last page with MSG_MORE */
__bio_for_each_segment(bvec, bio, i, 0) {
- if (_drbd_send_page(mdev, bvec->bv_page,
- bvec->bv_offset, bvec->bv_len,
- i == bio->bi_vcnt -1 ? 0 : MSG_MORE))
- return 0;
+ int err;
+
+ err = _drbd_send_page(mdev, bvec->bv_page,
+ bvec->bv_offset, bvec->bv_len,
+ i == bio->bi_vcnt - 1 ? 0 : MSG_MORE);
+ if (err)
+ return err;
}
- return 1;
+ return 0;
}

static int _drbd_send_zc_ee(struct drbd_conf *mdev,
@@ -1578,9 +1584,9 @@ int drbd_send_dblock(struct drbd_conf *mdev, struct drbd_request *req)
* receiving side, we sure have detected corruption elsewhere.
*/
if (mdev->tconn->net_conf->wire_protocol == DRBD_PROT_A || dgs)
- ok = _drbd_send_bio(mdev, req->master_bio);
+ ok = !_drbd_send_bio(mdev, req->master_bio);
else
- ok = _drbd_send_zc_bio(mdev, req->master_bio);
+ ok = !_drbd_send_zc_bio(mdev, req->master_bio);

/* double check digest, sometimes buffers have been modified in flight. */
if (dgs > 0 && dgs <= 64) {
--
1.7.4.1


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