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| author | Christoph Hellwig | 2017-04-05 19:21:22 +0200 |
|---|---|---|
| committer | Jens Axboe | 2017-04-08 19:25:38 +0200 |
| commit | 45c21793a6601b29926d67f7a07fe4077a45072e (patch) | |
| tree | e4ece67aa634a002b696697d904f5340b13fe970 /drivers/block/drbd/drbd_worker.c | |
| parent | drbd: make intelligent use of blkdev_issue_zeroout (diff) | |
| download | kernel-qcow2-linux-45c21793a6601b29926d67f7a07fe4077a45072e.tar.gz kernel-qcow2-linux-45c21793a6601b29926d67f7a07fe4077a45072e.tar.xz kernel-qcow2-linux-45c21793a6601b29926d67f7a07fe4077a45072e.zip | |
drbd: implement REQ_OP_WRITE_ZEROES
It seems like DRBD assumes its on the wire TRIM request always zeroes data.
Use that fact to implement REQ_OP_WRITE_ZEROES.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/block/drbd/drbd_worker.c')
| -rw-r--r-- | drivers/block/drbd/drbd_worker.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c index 3bff33f21435..1afcb4e02d8d 100644 --- a/drivers/block/drbd/drbd_worker.c +++ b/drivers/block/drbd/drbd_worker.c @@ -174,7 +174,8 @@ void drbd_peer_request_endio(struct bio *bio) struct drbd_peer_request *peer_req = bio->bi_private; struct drbd_device *device = peer_req->peer_device->device; bool is_write = bio_data_dir(bio) == WRITE; - bool is_discard = !!(bio_op(bio) == REQ_OP_DISCARD); + bool is_discard = bio_op(bio) == REQ_OP_WRITE_ZEROES || + bio_op(bio) == REQ_OP_DISCARD; if (bio->bi_error && __ratelimit(&drbd_ratelimit_state)) drbd_warn(device, "%s: error=%d s=%llus\n", @@ -249,6 +250,7 @@ void drbd_request_endio(struct bio *bio) /* to avoid recursion in __req_mod */ if (unlikely(bio->bi_error)) { switch (bio_op(bio)) { + case REQ_OP_WRITE_ZEROES: case REQ_OP_DISCARD: if (bio->bi_error == -EOPNOTSUPP) what = DISCARD_COMPLETED_NOTSUPP; |