diff options
Diffstat (limited to 'drivers/scsi/scsi_lib.c')
| -rw-r--r-- | drivers/scsi/scsi_lib.c | 32 |
1 files changed, 24 insertions, 8 deletions
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 572673873ddf..9c2b99e12ce3 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -21,6 +21,7 @@ #include <linux/hardirq.h> #include <linux/scatterlist.h> #include <linux/blk-mq.h> +#include <linux/blk-integrity.h> #include <linux/ratelimit.h> #include <asm/unaligned.h> @@ -215,7 +216,7 @@ int __scsi_execute(struct scsi_device *sdev, const unsigned char *cmd, struct scsi_request *rq; int ret; - req = blk_get_request(sdev->request_queue, + req = scsi_alloc_request(sdev->request_queue, data_direction == DMA_TO_DEVICE ? REQ_OP_DRV_OUT : REQ_OP_DRV_IN, rq_flags & RQF_PM ? BLK_MQ_REQ_PM : 0); @@ -259,7 +260,7 @@ int __scsi_execute(struct scsi_device *sdev, const unsigned char *cmd, scsi_normalize_sense(rq->sense, rq->sense_len, sshdr); ret = rq->result; out: - blk_put_request(req); + blk_mq_free_request(req); return ret; } @@ -1078,9 +1079,6 @@ EXPORT_SYMBOL(scsi_alloc_sgtables); * This function initializes the members of struct scsi_cmnd that must be * initialized before request processing starts and that won't be * reinitialized if a SCSI command is requeued. - * - * Called from inside blk_get_request() for pass-through requests and from - * inside scsi_init_command() for filesystem requests. */ static void scsi_initialize_rq(struct request *rq) { @@ -1097,6 +1095,18 @@ static void scsi_initialize_rq(struct request *rq) cmd->retries = 0; } +struct request *scsi_alloc_request(struct request_queue *q, + unsigned int op, blk_mq_req_flags_t flags) +{ + struct request *rq; + + rq = blk_mq_alloc_request(q, op, flags); + if (!IS_ERR(rq)) + scsi_initialize_rq(rq); + return rq; +} +EXPORT_SYMBOL_GPL(scsi_alloc_request); + /* * Only called when the request isn't completed by SCSI, and not freed by * SCSI @@ -1783,7 +1793,7 @@ static void scsi_mq_exit_request(struct blk_mq_tag_set *set, struct request *rq, } -static int scsi_mq_poll(struct blk_mq_hw_ctx *hctx) +static int scsi_mq_poll(struct blk_mq_hw_ctx *hctx, struct io_comp_batch *iob) { struct Scsi_Host *shost = hctx->driver_data; @@ -1863,7 +1873,6 @@ static const struct blk_mq_ops scsi_mq_ops_no_commit = { #endif .init_request = scsi_mq_init_request, .exit_request = scsi_mq_exit_request, - .initialize_rq_fn = scsi_initialize_rq, .cleanup_rq = scsi_cleanup_rq, .busy = scsi_mq_lld_busy, .map_queues = scsi_map_queues, @@ -1893,7 +1902,6 @@ static const struct blk_mq_ops scsi_mq_ops = { #endif .init_request = scsi_mq_init_request, .exit_request = scsi_mq_exit_request, - .initialize_rq_fn = scsi_initialize_rq, .cleanup_rq = scsi_cleanup_rq, .busy = scsi_mq_lld_busy, .map_queues = scsi_map_queues, @@ -1959,6 +1967,14 @@ struct scsi_device *scsi_device_from_queue(struct request_queue *q) return sdev; } +/* + * pktcdvd should have been integrated into the SCSI layers, but for historical + * reasons like the old IDE driver it isn't. This export allows it to safely + * probe if a given device is a SCSI one and only attach to that. + */ +#ifdef CONFIG_CDROM_PKTCDVD_MODULE +EXPORT_SYMBOL_GPL(scsi_device_from_queue); +#endif /** * scsi_block_requests - Utility function used by low-level drivers to prevent |