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scsi: kill off the legacy IO path

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This removes the legacy (non-mq) IO path for SCSI.

Cc: linux-scsi@vger.kernel.org
Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe
2018-11-01 16:36:27 -06:00
parent 3a7ea2c483
commit f664a3cc17
17 changed files with 77 additions and 680 deletions
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18
include/scsi/scsi_host.h
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@@ -11,7 +11,6 @@
#include <linux/blk-mq.h>
#include <scsi/scsi.h>
struct request_queue;
struct block_device;
struct completion;
struct module;
@@ -22,7 +21,6 @@ struct scsi_target;
struct Scsi_Host;
struct scsi_host_cmd_pool;
struct scsi_transport_template;
struct blk_queue_tags;
/*
@@ -547,14 +545,8 @@ struct Scsi_Host {
struct scsi_host_template *hostt;
struct scsi_transport_template *transportt;
/*
* Area to keep a shared tag map (if needed, will be
* NULL if not).
*/
union {
struct blk_queue_tag *bqt;
struct blk_mq_tag_set tag_set;
};
/* Area to keep a shared tag map */
struct blk_mq_tag_set tag_set;
atomic_t host_busy; /* commands actually active on low-level */
atomic_t host_blocked;
@@ -648,7 +640,6 @@ struct Scsi_Host {
/* The controller does not support WRITE SAME */
unsigned no_write_same:1;
unsigned use_blk_mq:1;
unsigned use_cmd_list:1;
/* Host responded with short (<36 bytes) INQUIRY result */
@@ -742,11 +733,6 @@ static inline int scsi_host_in_recovery(struct Scsi_Host *shost)
shost->tmf_in_progress;
}
static inline bool shost_use_blk_mq(struct Scsi_Host *shost)
{
return shost->use_blk_mq;
}
extern int scsi_queue_work(struct Scsi_Host *, struct work_struct *);
extern void scsi_flush_work(struct Scsi_Host *);