diff options
Diffstat (limited to 'drivers/scsi/sd.c')
| -rw-r--r-- | drivers/scsi/sd.c | 31 |
1 files changed, 26 insertions, 5 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index b853f91fb3da..d8d9c0bdd93c 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -735,7 +735,7 @@ static int sd_setup_unmap_cmnd(struct scsi_cmnd *cmd) return scsi_init_io(cmd); } -static int sd_setup_write_same16_cmnd(struct scsi_cmnd *cmd) +static int sd_setup_write_same16_cmnd(struct scsi_cmnd *cmd, bool unmap) { struct scsi_device *sdp = cmd->device; struct request *rq = cmd->request; @@ -752,13 +752,14 @@ static int sd_setup_write_same16_cmnd(struct scsi_cmnd *cmd) cmd->cmd_len = 16; cmd->cmnd[0] = WRITE_SAME_16; - cmd->cmnd[1] = 0x8; /* UNMAP */ + if (unmap) + cmd->cmnd[1] = 0x8; /* UNMAP */ put_unaligned_be64(sector, &cmd->cmnd[2]); put_unaligned_be32(nr_sectors, &cmd->cmnd[10]); cmd->allowed = SD_MAX_RETRIES; cmd->transfersize = data_len; - rq->timeout = SD_TIMEOUT; + rq->timeout = unmap ? SD_TIMEOUT : SD_WRITE_SAME_TIMEOUT; scsi_req(rq)->resid_len = data_len; return scsi_init_io(cmd); @@ -788,12 +789,27 @@ static int sd_setup_write_same10_cmnd(struct scsi_cmnd *cmd, bool unmap) cmd->allowed = SD_MAX_RETRIES; cmd->transfersize = data_len; - rq->timeout = SD_TIMEOUT; + rq->timeout = unmap ? SD_TIMEOUT : SD_WRITE_SAME_TIMEOUT; scsi_req(rq)->resid_len = data_len; return scsi_init_io(cmd); } +static int sd_setup_write_zeroes_cmnd(struct scsi_cmnd *cmd) +{ + struct request *rq = cmd->request; + struct scsi_device *sdp = cmd->device; + struct scsi_disk *sdkp = scsi_disk(rq->rq_disk); + u64 sector = blk_rq_pos(rq) >> (ilog2(sdp->sector_size) - 9); + u32 nr_sectors = blk_rq_sectors(rq) >> (ilog2(sdp->sector_size) - 9); + + if (sdp->no_write_same) + return BLKPREP_INVALID; + if (sdkp->ws16 || sector > 0xffffffff || nr_sectors > 0xffff) + return sd_setup_write_same16_cmnd(cmd, false); + return sd_setup_write_same10_cmnd(cmd, false); +} + static void sd_config_write_same(struct scsi_disk *sdkp) { struct request_queue *q = sdkp->disk->queue; @@ -823,6 +839,8 @@ static void sd_config_write_same(struct scsi_disk *sdkp) out: blk_queue_max_write_same_sectors(q, sdkp->max_ws_blocks * (logical_block_size >> 9)); + blk_queue_max_write_zeroes_sectors(q, sdkp->max_ws_blocks * + (logical_block_size >> 9)); } /** @@ -1163,7 +1181,7 @@ static int sd_init_command(struct scsi_cmnd *cmd) case SD_LBP_UNMAP: return sd_setup_unmap_cmnd(cmd); case SD_LBP_WS16: - return sd_setup_write_same16_cmnd(cmd); + return sd_setup_write_same16_cmnd(cmd, true); case SD_LBP_WS10: return sd_setup_write_same10_cmnd(cmd, true); case SD_LBP_ZERO: @@ -1171,6 +1189,8 @@ static int sd_init_command(struct scsi_cmnd *cmd) default: return BLKPREP_INVALID; } + case REQ_OP_WRITE_ZEROES: + return sd_setup_write_zeroes_cmnd(cmd); case REQ_OP_WRITE_SAME: return sd_setup_write_same_cmnd(cmd); case REQ_OP_FLUSH: @@ -1810,6 +1830,7 @@ static int sd_done(struct scsi_cmnd *SCpnt) switch (req_op(req)) { case REQ_OP_DISCARD: + case REQ_OP_WRITE_ZEROES: case REQ_OP_WRITE_SAME: case REQ_OP_ZONE_RESET: if (!result) { |