scsi: return blk_status_t from scsi_init_io and ->init_command
Replace the old BLKPREP_* values with the BLK_STS_ ones that they are converted to later anyway. Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig
Jens Axboe
parent
14784565f7
commit
159b2cbf59
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@ -1005,7 +1005,8 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
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scsi_io_completion_action(cmd, result);
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}
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static int scsi_init_sgtable(struct request *req, struct scsi_data_buffer *sdb)
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static blk_status_t scsi_init_sgtable(struct request *req,
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struct scsi_data_buffer *sdb)
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{
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int count;
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@ -1014,7 +1015,7 @@ static int scsi_init_sgtable(struct request *req, struct scsi_data_buffer *sdb)
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*/
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if (unlikely(sg_alloc_table_chained(&sdb->table,
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blk_rq_nr_phys_segments(req), sdb->table.sgl)))
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return BLKPREP_DEFER;
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return BLK_STS_RESOURCE;
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/*
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* Next, walk the list, and fill in the addresses and sizes of
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@ -1024,7 +1025,7 @@ static int scsi_init_sgtable(struct request *req, struct scsi_data_buffer *sdb)
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BUG_ON(count > sdb->table.nents);
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sdb->table.nents = count;
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sdb->length = blk_rq_payload_bytes(req);
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return BLKPREP_OK;
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return BLK_STS_OK;
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}
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/*
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@ -1034,25 +1035,25 @@ static int scsi_init_sgtable(struct request *req, struct scsi_data_buffer *sdb)
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*
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* Arguments: cmd - Command descriptor we wish to initialize
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*
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* Returns: 0 on success
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* BLKPREP_DEFER if the failure is retryable
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* BLKPREP_KILL if the failure is fatal
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* Returns: BLK_STS_OK on success
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* BLK_STS_RESOURCE if the failure is retryable
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* BLK_STS_IOERR if the failure is fatal
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*/
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int scsi_init_io(struct scsi_cmnd *cmd)
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blk_status_t scsi_init_io(struct scsi_cmnd *cmd)
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{
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struct request *rq = cmd->request;
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int error = BLKPREP_KILL;
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blk_status_t ret;
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if (WARN_ON_ONCE(!blk_rq_nr_phys_segments(rq)))
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return BLKPREP_KILL;
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return BLK_STS_IOERR;
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error = scsi_init_sgtable(rq, &cmd->sdb);
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if (error)
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return error;
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ret = scsi_init_sgtable(rq, &cmd->sdb);
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if (ret)
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return ret;
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if (blk_bidi_rq(rq)) {
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error = scsi_init_sgtable(rq->next_rq, rq->next_rq->special);
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if (error)
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ret = scsi_init_sgtable(rq->next_rq, rq->next_rq->special);
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if (ret)
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goto out_free_sgtables;
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}
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@ -1066,7 +1067,7 @@ int scsi_init_io(struct scsi_cmnd *cmd)
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* queues a command to a device on an adapter
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* that does not support DIX.
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*/
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error = BLKPREP_KILL;
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ret = BLK_STS_IOERR;
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goto out_free_sgtables;
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}
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@ -1074,7 +1075,7 @@ int scsi_init_io(struct scsi_cmnd *cmd)
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if (sg_alloc_table_chained(&prot_sdb->table, ivecs,
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prot_sdb->table.sgl)) {
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error = BLKPREP_DEFER;
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ret = BLK_STS_RESOURCE;
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goto out_free_sgtables;
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}
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@ -1087,10 +1088,10 @@ int scsi_init_io(struct scsi_cmnd *cmd)
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cmd->prot_sdb->table.nents = count;
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}
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return BLKPREP_OK;
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return BLK_STS_OK;
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out_free_sgtables:
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scsi_mq_free_sgtables(cmd);
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return error;
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return ret;
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}
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EXPORT_SYMBOL(scsi_init_io);
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@ -1200,9 +1201,9 @@ static blk_status_t scsi_setup_scsi_cmnd(struct scsi_device *sdev,
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* submit a request without an attached bio.
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*/
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if (req->bio) {
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int ret = scsi_init_io(cmd);
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if (unlikely(ret))
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return prep_to_mq(ret);
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blk_status_t ret = scsi_init_io(cmd);
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if (unlikely(ret != BLK_STS_OK))
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return ret;
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} else {
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BUG_ON(blk_rq_bytes(req));
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@ -1233,7 +1234,7 @@ static blk_status_t scsi_setup_fs_cmnd(struct scsi_device *sdev,
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cmd->cmnd = scsi_req(req)->cmd = scsi_req(req)->__cmd;
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memset(cmd->cmnd, 0, BLK_MAX_CDB);
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return prep_to_mq(scsi_cmd_to_driver(cmd)->init_command(cmd));
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return scsi_cmd_to_driver(cmd)->init_command(cmd);
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}
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static blk_status_t scsi_setup_cmnd(struct scsi_device *sdev,
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@ -114,7 +114,7 @@ static int sd_suspend_system(struct device *);
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static int sd_suspend_runtime(struct device *);
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static int sd_resume(struct device *);
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static void sd_rescan(struct device *);
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static int sd_init_command(struct scsi_cmnd *SCpnt);
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static blk_status_t sd_init_command(struct scsi_cmnd *SCpnt);
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static void sd_uninit_command(struct scsi_cmnd *SCpnt);
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static int sd_done(struct scsi_cmnd *);
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static void sd_eh_reset(struct scsi_cmnd *);
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@ -750,7 +750,7 @@ static void sd_config_discard(struct scsi_disk *sdkp, unsigned int mode)
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blk_queue_flag_set(QUEUE_FLAG_DISCARD, q);
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}
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static int sd_setup_unmap_cmnd(struct scsi_cmnd *cmd)
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static blk_status_t sd_setup_unmap_cmnd(struct scsi_cmnd *cmd)
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{
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struct scsi_device *sdp = cmd->device;
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struct request *rq = cmd->request;
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@ -761,7 +761,7 @@ static int sd_setup_unmap_cmnd(struct scsi_cmnd *cmd)
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rq->special_vec.bv_page = alloc_page(GFP_ATOMIC | __GFP_ZERO);
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if (!rq->special_vec.bv_page)
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return BLKPREP_DEFER;
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return BLK_STS_RESOURCE;
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rq->special_vec.bv_offset = 0;
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rq->special_vec.bv_len = data_len;
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rq->rq_flags |= RQF_SPECIAL_PAYLOAD;
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@ -784,7 +784,8 @@ static int sd_setup_unmap_cmnd(struct scsi_cmnd *cmd)
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return scsi_init_io(cmd);
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}
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static int sd_setup_write_same16_cmnd(struct scsi_cmnd *cmd, bool unmap)
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static blk_status_t sd_setup_write_same16_cmnd(struct scsi_cmnd *cmd,
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bool unmap)
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{
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struct scsi_device *sdp = cmd->device;
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struct request *rq = cmd->request;
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@ -794,7 +795,7 @@ static int sd_setup_write_same16_cmnd(struct scsi_cmnd *cmd, bool unmap)
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rq->special_vec.bv_page = alloc_page(GFP_ATOMIC | __GFP_ZERO);
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if (!rq->special_vec.bv_page)
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return BLKPREP_DEFER;
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return BLK_STS_RESOURCE;
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rq->special_vec.bv_offset = 0;
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rq->special_vec.bv_len = data_len;
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rq->rq_flags |= RQF_SPECIAL_PAYLOAD;
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@ -814,7 +815,8 @@ static int sd_setup_write_same16_cmnd(struct scsi_cmnd *cmd, bool unmap)
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return scsi_init_io(cmd);
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}
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static int sd_setup_write_same10_cmnd(struct scsi_cmnd *cmd, bool unmap)
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static blk_status_t sd_setup_write_same10_cmnd(struct scsi_cmnd *cmd,
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bool unmap)
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{
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struct scsi_device *sdp = cmd->device;
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struct request *rq = cmd->request;
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@ -824,7 +826,7 @@ static int sd_setup_write_same10_cmnd(struct scsi_cmnd *cmd, bool unmap)
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rq->special_vec.bv_page = alloc_page(GFP_ATOMIC | __GFP_ZERO);
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if (!rq->special_vec.bv_page)
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return BLKPREP_DEFER;
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return BLK_STS_RESOURCE;
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rq->special_vec.bv_offset = 0;
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rq->special_vec.bv_len = data_len;
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rq->rq_flags |= RQF_SPECIAL_PAYLOAD;
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@ -844,7 +846,7 @@ static int sd_setup_write_same10_cmnd(struct scsi_cmnd *cmd, bool unmap)
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return scsi_init_io(cmd);
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}
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static int sd_setup_write_zeroes_cmnd(struct scsi_cmnd *cmd)
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static blk_status_t sd_setup_write_zeroes_cmnd(struct scsi_cmnd *cmd)
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{
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struct request *rq = cmd->request;
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struct scsi_device *sdp = cmd->device;
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@ -862,7 +864,7 @@ static int sd_setup_write_zeroes_cmnd(struct scsi_cmnd *cmd)
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}
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if (sdp->no_write_same)
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return BLKPREP_INVALID;
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return BLK_STS_TARGET;
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if (sdkp->ws16 || sector > 0xffffffff || nr_sectors > 0xffff)
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return sd_setup_write_same16_cmnd(cmd, false);
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@ -939,7 +941,7 @@ out:
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* Will set up either WRITE SAME(10) or WRITE SAME(16) depending on
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* the preference indicated by the target device.
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**/
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static int sd_setup_write_same_cmnd(struct scsi_cmnd *cmd)
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static blk_status_t sd_setup_write_same_cmnd(struct scsi_cmnd *cmd)
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{
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struct request *rq = cmd->request;
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struct scsi_device *sdp = cmd->device;
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@ -948,10 +950,10 @@ static int sd_setup_write_same_cmnd(struct scsi_cmnd *cmd)
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sector_t sector = blk_rq_pos(rq);
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unsigned int nr_sectors = blk_rq_sectors(rq);
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unsigned int nr_bytes = blk_rq_bytes(rq);
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int ret;
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blk_status_t ret;
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if (sdkp->device->no_write_same)
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return BLKPREP_INVALID;
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return BLK_STS_TARGET;
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BUG_ON(bio_offset(bio) || bio_iovec(bio).bv_len != sdp->sector_size);
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@ -992,7 +994,7 @@ static int sd_setup_write_same_cmnd(struct scsi_cmnd *cmd)
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return ret;
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}
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static int sd_setup_flush_cmnd(struct scsi_cmnd *cmd)
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static blk_status_t sd_setup_flush_cmnd(struct scsi_cmnd *cmd)
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{
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struct request *rq = cmd->request;
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@ -1005,10 +1007,10 @@ static int sd_setup_flush_cmnd(struct scsi_cmnd *cmd)
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cmd->allowed = SD_MAX_RETRIES;
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rq->timeout = rq->q->rq_timeout * SD_FLUSH_TIMEOUT_MULTIPLIER;
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return BLKPREP_OK;
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return BLK_STS_OK;
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}
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static int sd_setup_read_write_cmnd(struct scsi_cmnd *SCpnt)
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static blk_status_t sd_setup_read_write_cmnd(struct scsi_cmnd *SCpnt)
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{
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struct request *rq = SCpnt->request;
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struct scsi_device *sdp = SCpnt->device;
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@ -1018,18 +1020,14 @@ static int sd_setup_read_write_cmnd(struct scsi_cmnd *SCpnt)
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sector_t threshold;
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unsigned int this_count = blk_rq_sectors(rq);
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unsigned int dif, dix;
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int ret;
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unsigned char protect;
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blk_status_t ret;
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ret = scsi_init_io(SCpnt);
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if (ret != BLKPREP_OK)
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if (ret != BLK_STS_OK)
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return ret;
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WARN_ON_ONCE(SCpnt != rq->special);
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/* from here on until we're complete, any goto out
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* is used for a killable error condition */
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ret = BLKPREP_KILL;
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SCSI_LOG_HLQUEUE(1,
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scmd_printk(KERN_INFO, SCpnt,
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"%s: block=%llu, count=%d\n",
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@ -1042,7 +1040,7 @@ static int sd_setup_read_write_cmnd(struct scsi_cmnd *SCpnt)
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blk_rq_sectors(rq)));
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SCSI_LOG_HLQUEUE(2, scmd_printk(KERN_INFO, SCpnt,
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"Retry with 0x%p\n", SCpnt));
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goto out;
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return BLK_STS_IOERR;
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}
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if (sdp->changed) {
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@ -1051,7 +1049,7 @@ static int sd_setup_read_write_cmnd(struct scsi_cmnd *SCpnt)
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* the changed bit has been reset
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*/
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/* printk("SCSI disk has been changed or is not present. Prohibiting further I/O.\n"); */
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goto out;
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return BLK_STS_IOERR;
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}
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/*
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@ -1089,31 +1087,28 @@ static int sd_setup_read_write_cmnd(struct scsi_cmnd *SCpnt)
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if ((block & 1) || (blk_rq_sectors(rq) & 1)) {
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scmd_printk(KERN_ERR, SCpnt,
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"Bad block number requested\n");
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goto out;
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} else {
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block = block >> 1;
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this_count = this_count >> 1;
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return BLK_STS_IOERR;
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}
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block = block >> 1;
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this_count = this_count >> 1;
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}
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if (sdp->sector_size == 2048) {
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if ((block & 3) || (blk_rq_sectors(rq) & 3)) {
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scmd_printk(KERN_ERR, SCpnt,
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"Bad block number requested\n");
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goto out;
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} else {
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block = block >> 2;
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this_count = this_count >> 2;
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return BLK_STS_IOERR;
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}
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block = block >> 2;
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this_count = this_count >> 2;
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}
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if (sdp->sector_size == 4096) {
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if ((block & 7) || (blk_rq_sectors(rq) & 7)) {
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scmd_printk(KERN_ERR, SCpnt,
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"Bad block number requested\n");
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goto out;
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} else {
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block = block >> 3;
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this_count = this_count >> 3;
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return BLK_STS_IOERR;
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}
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block = block >> 3;
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this_count = this_count >> 3;
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}
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if (rq_data_dir(rq) == WRITE) {
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SCpnt->cmnd[0] = WRITE_6;
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@ -1125,7 +1120,7 @@ static int sd_setup_read_write_cmnd(struct scsi_cmnd *SCpnt)
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SCpnt->cmnd[0] = READ_6;
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} else {
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scmd_printk(KERN_ERR, SCpnt, "Unknown command %d\n", req_op(rq));
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goto out;
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return BLK_STS_IOERR;
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}
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SCSI_LOG_HLQUEUE(2, scmd_printk(KERN_INFO, SCpnt,
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@ -1145,10 +1140,8 @@ static int sd_setup_read_write_cmnd(struct scsi_cmnd *SCpnt)
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if (protect && sdkp->protection_type == T10_PI_TYPE2_PROTECTION) {
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SCpnt->cmnd = mempool_alloc(sd_cdb_pool, GFP_ATOMIC);
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if (unlikely(SCpnt->cmnd == NULL)) {
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ret = BLKPREP_DEFER;
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goto out;
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}
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if (unlikely(!SCpnt->cmnd))
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return BLK_STS_RESOURCE;
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SCpnt->cmd_len = SD_EXT_CDB_SIZE;
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memset(SCpnt->cmnd, 0, SCpnt->cmd_len);
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@ -1216,7 +1209,7 @@ static int sd_setup_read_write_cmnd(struct scsi_cmnd *SCpnt)
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*/
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scmd_printk(KERN_ERR, SCpnt,
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"FUA write on READ/WRITE(6) drive\n");
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goto out;
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return BLK_STS_IOERR;
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}
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SCpnt->cmnd[1] |= (unsigned char) ((block >> 16) & 0x1f);
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@ -1240,12 +1233,10 @@ static int sd_setup_read_write_cmnd(struct scsi_cmnd *SCpnt)
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* This indicates that the command is ready from our end to be
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* queued.
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*/
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ret = BLKPREP_OK;
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out:
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return ret;
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return BLK_STS_OK;
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}
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static int sd_init_command(struct scsi_cmnd *cmd)
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static blk_status_t sd_init_command(struct scsi_cmnd *cmd)
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{
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struct request *rq = cmd->request;
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@ -1261,7 +1252,7 @@ static int sd_init_command(struct scsi_cmnd *cmd)
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case SD_LBP_ZERO:
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return sd_setup_write_same10_cmnd(cmd, false);
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default:
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return BLKPREP_INVALID;
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return BLK_STS_TARGET;
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}
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case REQ_OP_WRITE_ZEROES:
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return sd_setup_write_zeroes_cmnd(cmd);
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@ -1276,7 +1267,7 @@ static int sd_init_command(struct scsi_cmnd *cmd)
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return sd_zbc_setup_reset_cmnd(cmd);
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default:
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WARN_ON_ONCE(1);
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return BLKPREP_KILL;
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return BLK_STS_NOTSUPP;
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}
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}
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@ -271,7 +271,7 @@ static inline int sd_is_zoned(struct scsi_disk *sdkp)
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|
||||
extern int sd_zbc_read_zones(struct scsi_disk *sdkp, unsigned char *buffer);
|
||||
extern void sd_zbc_print_zones(struct scsi_disk *sdkp);
|
||||
extern int sd_zbc_setup_reset_cmnd(struct scsi_cmnd *cmd);
|
||||
extern blk_status_t sd_zbc_setup_reset_cmnd(struct scsi_cmnd *cmd);
|
||||
extern void sd_zbc_complete(struct scsi_cmnd *cmd, unsigned int good_bytes,
|
||||
struct scsi_sense_hdr *sshdr);
|
||||
extern int sd_zbc_report_zones(struct gendisk *disk, sector_t sector,
|
||||
|
|
@ -288,9 +288,9 @@ static inline int sd_zbc_read_zones(struct scsi_disk *sdkp,
|
|||
|
||||
static inline void sd_zbc_print_zones(struct scsi_disk *sdkp) {}
|
||||
|
||||
static inline int sd_zbc_setup_reset_cmnd(struct scsi_cmnd *cmd)
|
||||
static inline blk_status_t sd_zbc_setup_reset_cmnd(struct scsi_cmnd *cmd)
|
||||
{
|
||||
return BLKPREP_INVALID;
|
||||
return BLK_STS_TARGET;
|
||||
}
|
||||
|
||||
static inline void sd_zbc_complete(struct scsi_cmnd *cmd,
|
||||
|
|
|
|||
|
|
@ -185,7 +185,7 @@ static inline sector_t sd_zbc_zone_sectors(struct scsi_disk *sdkp)
|
|||
*
|
||||
* Called from sd_init_command() for a REQ_OP_ZONE_RESET request.
|
||||
*/
|
||||
int sd_zbc_setup_reset_cmnd(struct scsi_cmnd *cmd)
|
||||
blk_status_t sd_zbc_setup_reset_cmnd(struct scsi_cmnd *cmd)
|
||||
{
|
||||
struct request *rq = cmd->request;
|
||||
struct scsi_disk *sdkp = scsi_disk(rq->rq_disk);
|
||||
|
|
@ -194,14 +194,14 @@ int sd_zbc_setup_reset_cmnd(struct scsi_cmnd *cmd)
|
|||
|
||||
if (!sd_is_zoned(sdkp))
|
||||
/* Not a zoned device */
|
||||
return BLKPREP_KILL;
|
||||
return BLK_STS_IOERR;
|
||||
|
||||
if (sdkp->device->changed)
|
||||
return BLKPREP_KILL;
|
||||
return BLK_STS_IOERR;
|
||||
|
||||
if (sector & (sd_zbc_zone_sectors(sdkp) - 1))
|
||||
/* Unaligned request */
|
||||
return BLKPREP_KILL;
|
||||
return BLK_STS_IOERR;
|
||||
|
||||
cmd->cmd_len = 16;
|
||||
memset(cmd->cmnd, 0, cmd->cmd_len);
|
||||
|
|
@ -214,7 +214,7 @@ int sd_zbc_setup_reset_cmnd(struct scsi_cmnd *cmd)
|
|||
cmd->transfersize = 0;
|
||||
cmd->allowed = 0;
|
||||
|
||||
return BLKPREP_OK;
|
||||
return BLK_STS_OK;
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
|
|||
|
|
@ -80,7 +80,7 @@ MODULE_ALIAS_SCSI_DEVICE(TYPE_WORM);
|
|||
static DEFINE_MUTEX(sr_mutex);
|
||||
static int sr_probe(struct device *);
|
||||
static int sr_remove(struct device *);
|
||||
static int sr_init_command(struct scsi_cmnd *SCpnt);
|
||||
static blk_status_t sr_init_command(struct scsi_cmnd *SCpnt);
|
||||
static int sr_done(struct scsi_cmnd *);
|
||||
static int sr_runtime_suspend(struct device *dev);
|
||||
|
||||
|
|
@ -384,22 +384,22 @@ static int sr_done(struct scsi_cmnd *SCpnt)
|
|||
return good_bytes;
|
||||
}
|
||||
|
||||
static int sr_init_command(struct scsi_cmnd *SCpnt)
|
||||
static blk_status_t sr_init_command(struct scsi_cmnd *SCpnt)
|
||||
{
|
||||
int block = 0, this_count, s_size;
|
||||
struct scsi_cd *cd;
|
||||
struct request *rq = SCpnt->request;
|
||||
int ret;
|
||||
blk_status_t ret;
|
||||
|
||||
ret = scsi_init_io(SCpnt);
|
||||
if (ret != BLKPREP_OK)
|
||||
if (ret != BLK_STS_OK)
|
||||
goto out;
|
||||
WARN_ON_ONCE(SCpnt != rq->special);
|
||||
cd = scsi_cd(rq->rq_disk);
|
||||
|
||||
/* from here on until we're complete, any goto out
|
||||
* is used for a killable error condition */
|
||||
ret = BLKPREP_KILL;
|
||||
ret = BLK_STS_IOERR;
|
||||
|
||||
SCSI_LOG_HLQUEUE(1, scmd_printk(KERN_INFO, SCpnt,
|
||||
"Doing sr request, block = %d\n", block));
|
||||
|
|
@ -516,7 +516,7 @@ static int sr_init_command(struct scsi_cmnd *SCpnt)
|
|||
* This indicates that the command is ready from our end to be
|
||||
* queued.
|
||||
*/
|
||||
ret = BLKPREP_OK;
|
||||
ret = BLK_STS_OK;
|
||||
out:
|
||||
return ret;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -171,7 +171,7 @@ extern void *scsi_kmap_atomic_sg(struct scatterlist *sg, int sg_count,
|
|||
size_t *offset, size_t *len);
|
||||
extern void scsi_kunmap_atomic_sg(void *virt);
|
||||
|
||||
extern int scsi_init_io(struct scsi_cmnd *cmd);
|
||||
extern blk_status_t scsi_init_io(struct scsi_cmnd *cmd);
|
||||
|
||||
#ifdef CONFIG_SCSI_DMA
|
||||
extern int scsi_dma_map(struct scsi_cmnd *cmd);
|
||||
|
|
|
|||
|
|
@ -2,6 +2,7 @@
|
|||
#ifndef _SCSI_SCSI_DRIVER_H
|
||||
#define _SCSI_SCSI_DRIVER_H
|
||||
|
||||
#include <linux/blk_types.h>
|
||||
#include <linux/device.h>
|
||||
|
||||
struct module;
|
||||
|
|
@ -13,7 +14,7 @@ struct scsi_driver {
|
|||
struct device_driver gendrv;
|
||||
|
||||
void (*rescan)(struct device *);
|
||||
int (*init_command)(struct scsi_cmnd *);
|
||||
blk_status_t (*init_command)(struct scsi_cmnd *);
|
||||
void (*uninit_command)(struct scsi_cmnd *);
|
||||
int (*done)(struct scsi_cmnd *);
|
||||
int (*eh_action)(struct scsi_cmnd *, int);
|
||||
|
|
|
|||
Loading…
Reference in New Issue