diff options
| author | Ming Lei <ming.lei@redhat.com> | 2023-03-30 14:36:21 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-04-03 04:22:54 +0300 |
| commit | 23ef8220f287abe5bf741ddfc278e7359742d3b1 (patch) | |
| tree | e2202a9ef6a46cf88104532620ccfad1f76b3e6b /drivers/block | |
| parent | 903f8aeea9fd1b97fba4ab805ddd639f57f117f8 (diff) | |
| download | linux-23ef8220f287abe5bf741ddfc278e7359742d3b1.tar.xz | |
block: ublk_drv: don't consider flush request in map/unmap io
There isn't data in request of REQ_OP_FLUSH always, so don't consider
it in both ublk_map_io() and ublk_unmap_io().
Reviewed-by: Ziyang Zhang <ZiyangZhang@linux.alibaba.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/ublk_drv.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c index 7b3d551938f4..67a6b0581b39 100644 --- a/drivers/block/ublk_drv.c +++ b/drivers/block/ublk_drv.c @@ -529,15 +529,13 @@ static int ublk_map_io(const struct ublk_queue *ubq, const struct request *req, struct ublk_io *io) { const unsigned int rq_bytes = blk_rq_bytes(req); + /* * no zero copy, we delay copy WRITE request data into ublksrv * context and the big benefit is that pinning pages in current * context is pretty fast, see ublk_pin_user_pages */ - if (req_op(req) != REQ_OP_WRITE && req_op(req) != REQ_OP_FLUSH) - return rq_bytes; - - if (ublk_rq_has_data(req)) { + if (ublk_rq_has_data(req) && req_op(req) == REQ_OP_WRITE) { struct ublk_map_data data = { .ubq = ubq, .rq = req, @@ -772,9 +770,7 @@ static inline void __ublk_rq_task_work(struct request *req) return; } - if (ublk_need_get_data(ubq) && - (req_op(req) == REQ_OP_WRITE || - req_op(req) == REQ_OP_FLUSH)) { + if (ublk_need_get_data(ubq) && (req_op(req) == REQ_OP_WRITE)) { /* * We have not handled UBLK_IO_NEED_GET_DATA command yet, * so immepdately pass UBLK_IO_RES_NEED_GET_DATA to ublksrv |