FEX-Emu/linux
1
0
Fork 0
mirror of https://github.com/FEX-Emu/linux.git synced 2024-12-02 04:38:08 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

block: remove the blk_execute_rq return value

Browse Source 
The function only returns -EIO if rq->errors is non-zero, which is not
very useful and lets a large number of callers ignore the return value.

Just let the callers figure out their error themselves.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Bart Van Assche <Bart.VanAssche@sandisk.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Christoph Hellwig 2017-04-20 16:02:55 +02:00 committed by Jens Axboe
parent 75a500ef6e
commit b7819b9259
16 changed files with 34 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
block/blk-exec.c
View File

@ -92,11 +92,10 @@ EXPORT_SYMBOL_GPL(blk_execute_rq_nowait);
* Insert a fully prepared request at the back of the I/O scheduler queue
* for execution and wait for completion.
*/
int blk_execute_rq(struct request_queue *q, struct gendisk *bd_disk,
void blk_execute_rq(struct request_queue *q, struct gendisk *bd_disk,
struct request *rq, int at_head)
{
DECLARE_COMPLETION_ONSTACK(wait);
int err = 0;
unsigned long hang_check;
rq->end_io_data = &wait;
@ -108,10 +107,5 @@ int blk_execute_rq(struct request_queue *q, struct gendisk *bd_disk,
while (!wait_for_completion_io_timeout(&wait, hang_check * (HZ/2)));
else
wait_for_completion_io(&wait);
if (rq->errors)
err = -EIO;
return err;
}
EXPORT_SYMBOL(blk_execute_rq);

3
block/scsi_ioctl.c
View File

@ -547,7 +547,8 @@ static int __blk_send_generic(struct request_queue *q, struct gendisk *bd_disk,
scsi_req(rq)->cmd[0] = cmd;
scsi_req(rq)->cmd[4] = data;
scsi_req(rq)->cmd_len = 6;
err = blk_execute_rq(q, bd_disk, rq, 0);
blk_execute_rq(q, bd_disk, rq, 0);
err = rq->errors ? -EIO : 0;
blk_put_request(rq);
return err;

3
drivers/block/virtio_blk.c
View File

@ -310,7 +310,8 @@ static int virtblk_get_id(struct gendisk *disk, char *id_str)
if (err)
goto out;
err = blk_execute_rq(vblk->disk->queue, vblk->disk, req, false);
blk_execute_rq(vblk->disk->queue, vblk->disk, req, false);
err = req->errors ? -EIO : 0;
out:
blk_put_request(req);
return err;

3
drivers/cdrom/cdrom.c
View File

@ -2218,7 +2218,8 @@ static int cdrom_read_cdda_bpc(struct cdrom_device_info *cdi, __u8 __user *ubuf,
rq->timeout = 60 * HZ;
bio = rq->bio;
if (blk_execute_rq(q, cdi->disk, rq, 0)) {
blk_execute_rq(q, cdi->disk, rq, 0);
if (rq->errors) {
struct request_sense *s = req->sense;
ret = -EIO;
cdi->last_sense = s->sense_key;

3
drivers/ide/ide-atapi.c
View File

@ -107,7 +107,8 @@ int ide_queue_pc_tail(ide_drive_t *drive, struct gendisk *disk,
memcpy(scsi_req(rq)->cmd, pc->c, 12);
if (drive->media == ide_tape)
scsi_req(rq)->cmd[13] = REQ_IDETAPE_PC1;
error = blk_execute_rq(drive->queue, disk, rq, 0);
blk_execute_rq(drive->queue, disk, rq, 0);
error = rq->errors ? -EIO : 0;
put_req:
blk_put_request(rq);
return error;

3
drivers/ide/ide-cd.c
View File

@ -452,7 +452,8 @@ int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
}
}
error = blk_execute_rq(drive->queue, info->disk, rq, 0);
blk_execute_rq(drive->queue, info->disk, rq, 0);
error = rq->errors ? -EIO : 0;
if (buffer)
*bufflen = scsi_req(rq)->resid_len;

3
drivers/ide/ide-cd_ioctl.c
View File

@ -307,7 +307,8 @@ int ide_cdrom_reset(struct cdrom_device_info *cdi)
scsi_req_init(rq);
ide_req(rq)->type = ATA_PRIV_MISC;
rq->rq_flags = RQF_QUIET;
ret = blk_execute_rq(drive->queue, cd->disk, rq, 0);
blk_execute_rq(drive->queue, cd->disk, rq, 0);
ret = rq->errors ? -EIO : 0;
blk_put_request(rq);
/*
* A reset will unlock the door. If it was previously locked,

4
drivers/ide/ide-devsets.c
View File

@ -173,8 +173,8 @@ int ide_devset_execute(ide_drive_t *drive, const struct ide_devset *setting,
*(int *)&scsi_req(rq)->cmd[1] = arg;
rq->special = setting->set;
if (blk_execute_rq(q, NULL, rq, 0))
ret = rq->errors;
blk_execute_rq(q, NULL, rq, 0);
ret = rq->errors;
blk_put_request(rq);
return ret;

3
drivers/ide/ide-disk.c
View File

@ -470,7 +470,6 @@ ide_devset_get(multcount, mult_count);
static int set_multcount(ide_drive_t *drive, int arg)
{
struct request *rq;
int error;
if (arg < 0 || arg > (drive->id[ATA_ID_MAX_MULTSECT] & 0xff))
return -EINVAL;
@ -484,7 +483,7 @@ static int set_multcount(ide_drive_t *drive, int arg)
drive->mult_req = arg;
drive->special_flags |= IDE_SFLAG_SET_MULTMODE;
error = blk_execute_rq(drive->queue, NULL, rq, 0);
blk_execute_rq(drive->queue, NULL, rq, 0);
blk_put_request(rq);
return (drive->mult_count == arg) ? 0 : -EIO;

7
drivers/ide/ide-ioctls.c
View File

@ -128,7 +128,8 @@ static int ide_cmd_ioctl(ide_drive_t *drive, unsigned long arg)
rq = blk_get_request(drive->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
scsi_req_init(rq);
ide_req(rq)->type = ATA_PRIV_TASKFILE;
err = blk_execute_rq(drive->queue, NULL, rq, 0);
blk_execute_rq(drive->queue, NULL, rq, 0);
err = rq->errors ? -EIO : 0;
blk_put_request(rq);
return err;
@ -227,8 +228,8 @@ static int generic_drive_reset(ide_drive_t *drive)
ide_req(rq)->type = ATA_PRIV_MISC;
scsi_req(rq)->cmd_len = 1;
scsi_req(rq)->cmd[0] = REQ_DRIVE_RESET;
if (blk_execute_rq(drive->queue, NULL, rq, 1))
ret = rq->errors;
blk_execute_rq(drive->queue, NULL, rq, 1);
ret = rq->errors;
blk_put_request(rq);
return ret;
}

3
drivers/ide/ide-park.c
View File

@ -37,7 +37,8 @@ static void issue_park_cmd(ide_drive_t *drive, unsigned long timeout)
scsi_req(rq)->cmd_len = 1;
ide_req(rq)->type = ATA_PRIV_MISC;
rq->special = &timeout;
rc = blk_execute_rq(q, NULL, rq, 1);
blk_execute_rq(q, NULL, rq, 1);
rc = rq->errors ? -EIO : 0;
blk_put_request(rq);
if (rc)
goto out;

3
drivers/ide/ide-pm.c
View File

@ -27,7 +27,8 @@ int generic_ide_suspend(struct device *dev, pm_message_t mesg)
mesg.event = PM_EVENT_FREEZE;
rqpm.pm_state = mesg.event;
ret = blk_execute_rq(drive->queue, NULL, rq, 0);
blk_execute_rq(drive->queue, NULL, rq, 0);
ret = rq->errors ? -EIO : 0;
blk_put_request(rq);
if (ret == 0 && ide_port_acpi(hwif)) {

4
drivers/ide/ide-taskfile.c
View File

@ -452,8 +452,8 @@ int ide_raw_taskfile(ide_drive_t *drive, struct ide_cmd *cmd, u8 *buf,
rq->special = cmd;
cmd->rq = rq;
error = blk_execute_rq(drive->queue, NULL, rq, 0);
blk_execute_rq(drive->queue, NULL, rq, 0);
error = rq->errors ? -EIO : 0;
put_req:
blk_put_request(rq);
return error;

5
drivers/scsi/osd/osd_initiator.c
View File

@ -489,7 +489,10 @@ static void _set_error_resid(struct osd_request *or, struct request *req,
int osd_execute_request(struct osd_request *or)
{
int error = blk_execute_rq(or->request->q, NULL, or->request, 0);
int error;
blk_execute_rq(or->request->q, NULL, or->request, 0);
error = or->request->errors ? -EIO : 0;
_set_error_resid(or, or->request, error);
return error;

5
fs/nfsd/blocklayout.c
View File

@ -242,10 +242,11 @@ static int nfsd4_scsi_identify_device(struct block_device *bdev,
req->cmd[4] = bufflen & 0xff;
req->cmd_len = COMMAND_SIZE(INQUIRY);
error = blk_execute_rq(rq->q, NULL, rq, 1);
if (error) {
blk_execute_rq(rq->q, NULL, rq, 1);
if (rq->errors) {
pr_err("pNFS: INQUIRY 0x83 failed with: %x\n",
rq->errors);
error = -EIO;
goto out_put_request;
}

2
include/linux/blkdev.h
View File

@ -970,7 +970,7 @@ extern int blk_rq_map_kern(struct request_queue *, struct request *, void *, uns
extern int blk_rq_map_user_iov(struct request_queue *, struct request *,
struct rq_map_data *, const struct iov_iter *,
gfp_t);
extern int blk_execute_rq(struct request_queue *, struct gendisk *,
extern void blk_execute_rq(struct request_queue *, struct gendisk *,
struct request *, int);
extern void blk_execute_rq_nowait(struct request_queue *, struct gendisk *,
struct request *, int, rq_end_io_fn *);