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block: Make most scsi_req_init() calls implicit

Browse source 
Instead of explicitly calling scsi_req_init() after blk_get_request(),
call that function from inside blk_get_request(). Add an
.initialize_rq_fn() callback function to the block drivers that need
it. Merge the IDE .init_rq_fn() function into .initialize_rq_fn()
because it is too small to keep it as a separate function. Keep the
scsi_req_init() call in ide_prep_sense() because it follows a
blk_rq_init() call.

References: commit 82ed4db499 ("block: split scsi_request out of struct request")
Signed-off-by: Bart Van Assche <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Hannes Reinecke <[email protected]>
Cc: Omar Sandoval <[email protected]>
Cc: Nicholas Bellinger <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Bart Van Assche 2017-06-20 11:15:41 -07:00 • committed by Jens Axboe
commit ca18d6f769
25 changed files with 20 additions and 33 deletions
Download patch file Download diff file Expand all files Collapse all files

1
drivers/ide/ide-atapi.c
View file

@ -93,7 +93,6 @@ int ide_queue_pc_tail(ide_drive_t *drive, struct gendisk *disk,
int error;
rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
scsi_req_init(rq);
ide_req(rq)->type = ATA_PRIV_MISC;
rq->special = (char *)pc;

1
drivers/ide/ide-cd.c
View file

@ -438,7 +438,6 @@ int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
rq = blk_get_request(drive->queue,
write ? REQ_OP_DRV_OUT : REQ_OP_DRV_IN, __GFP_RECLAIM);
scsi_req_init(rq);
memcpy(scsi_req(rq)->cmd, cmd, BLK_MAX_CDB);
ide_req(rq)->type = ATA_PRIV_PC;
rq->rq_flags |= rq_flags;

1
drivers/ide/ide-cd_ioctl.c
View file

@ -304,7 +304,6 @@ int ide_cdrom_reset(struct cdrom_device_info *cdi)
int ret;
rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
scsi_req_init(rq);
ide_req(rq)->type = ATA_PRIV_MISC;
rq->rq_flags = RQF_QUIET;
blk_execute_rq(drive->queue, cd->disk, rq, 0);

1
drivers/ide/ide-devsets.c
View file

@ -166,7 +166,6 @@ int ide_devset_execute(ide_drive_t *drive, const struct ide_devset *setting,
return setting->set(drive, arg);
rq = blk_get_request(q, REQ_OP_DRV_IN, __GFP_RECLAIM);
scsi_req_init(rq);
ide_req(rq)->type = ATA_PRIV_MISC;
scsi_req(rq)->cmd_len = 5;
scsi_req(rq)->cmd[0] = REQ_DEVSET_EXEC;

1
drivers/ide/ide-disk.c
View file

@ -478,7 +478,6 @@ static int set_multcount(ide_drive_t *drive, int arg)
return -EBUSY;
rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
scsi_req_init(rq);
ide_req(rq)->type = ATA_PRIV_TASKFILE;
drive->mult_req = arg;

2
drivers/ide/ide-ioctls.c
View file

@ -126,7 +126,6 @@ static int ide_cmd_ioctl(ide_drive_t *drive, unsigned long arg)
struct request *rq;
rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
scsi_req_init(rq);
ide_req(rq)->type = ATA_PRIV_TASKFILE;
blk_execute_rq(drive->queue, NULL, rq, 0);
err = scsi_req(rq)->result ? -EIO : 0;
@ -224,7 +223,6 @@ static int generic_drive_reset(ide_drive_t *drive)
int ret = 0;
rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
scsi_req_init(rq);
ide_req(rq)->type = ATA_PRIV_MISC;
scsi_req(rq)->cmd_len = 1;
scsi_req(rq)->cmd[0] = REQ_DRIVE_RESET;

2
drivers/ide/ide-park.c
View file

@ -32,7 +32,6 @@ static void issue_park_cmd(ide_drive_t *drive, unsigned long timeout)
spin_unlock_irq(&hwif->lock);
rq = blk_get_request(q, REQ_OP_DRV_IN, __GFP_RECLAIM);
scsi_req_init(rq);
scsi_req(rq)->cmd[0] = REQ_PARK_HEADS;
scsi_req(rq)->cmd_len = 1;
ide_req(rq)->type = ATA_PRIV_MISC;
@ -48,7 +47,6 @@ static void issue_park_cmd(ide_drive_t *drive, unsigned long timeout)
* timeout has expired, so power management will be reenabled.
*/
rq = blk_get_request(q, REQ_OP_DRV_IN, GFP_NOWAIT);
scsi_req_init(rq);
if (IS_ERR(rq))
goto out;

2
drivers/ide/ide-pm.c
View file

@ -19,7 +19,6 @@ int generic_ide_suspend(struct device *dev, pm_message_t mesg)
memset(&rqpm, 0, sizeof(rqpm));
rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
scsi_req_init(rq);
ide_req(rq)->type = ATA_PRIV_PM_SUSPEND;
rq->special = &rqpm;
rqpm.pm_step = IDE_PM_START_SUSPEND;
@ -91,7 +90,6 @@ int generic_ide_resume(struct device *dev)
memset(&rqpm, 0, sizeof(rqpm));
rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
scsi_req_init(rq);
ide_req(rq)->type = ATA_PRIV_PM_RESUME;
rq->rq_flags |= RQF_PREEMPT;
rq->special = &rqpm;

6
drivers/ide/ide-probe.c
View file

@ -741,12 +741,12 @@ static void ide_port_tune_devices(ide_hwif_t *hwif)
}
}
static int ide_init_rq(struct request_queue *q, struct request *rq, gfp_t gfp)
static void ide_initialize_rq(struct request *rq)
{
struct ide_request *req = blk_mq_rq_to_pdu(rq);
scsi_req_init(rq);
req->sreq.sense = req->sense;
return 0;
}
/*
@ -771,7 +771,7 @@ static int ide_init_queue(ide_drive_t *drive)
return 1;
q->request_fn = do_ide_request;
q->init_rq_fn = ide_init_rq;
q->initialize_rq_fn = ide_initialize_rq;
q->cmd_size = sizeof(struct ide_request);
queue_flag_set_unlocked(QUEUE_FLAG_SCSI_PASSTHROUGH, q);
if (blk_init_allocated_queue(q) < 0) {

1
drivers/ide/ide-tape.c
View file

@ -855,7 +855,6 @@ static int idetape_queue_rw_tail(ide_drive_t *drive, int cmd, int size)
BUG_ON(size < 0 || size % tape->blk_size);
rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
scsi_req_init(rq);
ide_req(rq)->type = ATA_PRIV_MISC;
scsi_req(rq)->cmd[13] = cmd;
rq->rq_disk = tape->disk;

1
drivers/ide/ide-taskfile.c
View file

@ -433,7 +433,6 @@ int ide_raw_taskfile(ide_drive_t *drive, struct ide_cmd *cmd, u8 *buf,
rq = blk_get_request(drive->queue,
(cmd->tf_flags & IDE_TFLAG_WRITE) ?
REQ_OP_DRV_OUT : REQ_OP_DRV_IN, __GFP_RECLAIM);
scsi_req_init(rq);
ide_req(rq)->type = ATA_PRIV_TASKFILE;
/*