diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-06-25 14:29:53 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-06-25 14:29:53 -0700 |
commit | bfffa1cc9db8a950dd4b1a09999f8a20e69a6652 (patch) | |
tree | 01b046072ca9105b7852f790762f7b00b72e6ff7 /drivers/ide | |
parent | cc8a0a943948d1b1bc803b37486831af7b04dd38 (diff) | |
parent | ae994ea972473c0ace9d55f718b60f0727af1381 (diff) | |
download | blackbird-obmc-linux-bfffa1cc9db8a950dd4b1a09999f8a20e69a6652.tar.gz blackbird-obmc-linux-bfffa1cc9db8a950dd4b1a09999f8a20e69a6652.zip |
Merge branch 'for-4.2/core' of git://git.kernel.dk/linux-block
Pull core block IO update from Jens Axboe:
"Nothing really major in here, mostly a collection of smaller
optimizations and cleanups, mixed with various fixes. In more detail,
this contains:
- Addition of policy specific data to blkcg for block cgroups. From
Arianna Avanzini.
- Various cleanups around command types from Christoph.
- Cleanup of the suspend block I/O path from Christoph.
- Plugging updates from Shaohua and Jeff Moyer, for blk-mq.
- Eliminating atomic inc/dec of both remaining IO count and reference
count in a bio. From me.
- Fixes for SG gap and chunk size support for data-less (discards)
IO, so we can merge these better. From me.
- Small restructuring of blk-mq shared tag support, freeing drivers
from iterating hardware queues. From Keith Busch.
- A few cfq-iosched tweaks, from Tahsin Erdogan and me. Makes the
IOPS mode the default for non-rotational storage"
* 'for-4.2/core' of git://git.kernel.dk/linux-block: (35 commits)
cfq-iosched: fix other locations where blkcg_to_cfqgd() can return NULL
cfq-iosched: fix sysfs oops when attempting to read unconfigured weights
cfq-iosched: move group scheduling functions under ifdef
cfq-iosched: fix the setting of IOPS mode on SSDs
blktrace: Add blktrace.c to BLOCK LAYER in MAINTAINERS file
block, cgroup: implement policy-specific per-blkcg data
block: Make CFQ default to IOPS mode on SSDs
block: add blk_set_queue_dying() to blkdev.h
blk-mq: Shared tag enhancements
block: don't honor chunk sizes for data-less IO
block: only honor SG gap prevention for merges that contain data
block: fix returnvar.cocci warnings
block, dm: don't copy bios for request clones
block: remove management of bi_remaining when restoring original bi_end_io
block: replace trylock with mutex_lock in blkdev_reread_part()
block: export blkdev_reread_part() and __blkdev_reread_part()
suspend: simplify block I/O handling
block: collapse bio bit space
block: remove unused BIO_RW_BLOCK and BIO_EOF flags
block: remove BIO_EOPNOTSUPP
...
Diffstat (limited to 'drivers/ide')
-rw-r--r-- | drivers/ide/ide-atapi.c | 10 | ||||
-rw-r--r-- | drivers/ide/ide-cd.c | 10 | ||||
-rw-r--r-- | drivers/ide/ide-cd_ioctl.c | 2 | ||||
-rw-r--r-- | drivers/ide/ide-devsets.c | 2 | ||||
-rw-r--r-- | drivers/ide/ide-eh.c | 4 | ||||
-rw-r--r-- | drivers/ide/ide-floppy.c | 8 | ||||
-rw-r--r-- | drivers/ide/ide-io.c | 12 | ||||
-rw-r--r-- | drivers/ide/ide-ioctls.c | 2 | ||||
-rw-r--r-- | drivers/ide/ide-park.c | 4 | ||||
-rw-r--r-- | drivers/ide/ide-pm.c | 56 | ||||
-rw-r--r-- | drivers/ide/ide-tape.c | 6 | ||||
-rw-r--r-- | drivers/ide/ide-taskfile.c | 2 |
12 files changed, 74 insertions, 44 deletions
diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c index fac3d9da2e07..1362ad80a76c 100644 --- a/drivers/ide/ide-atapi.c +++ b/drivers/ide/ide-atapi.c @@ -93,7 +93,7 @@ int ide_queue_pc_tail(ide_drive_t *drive, struct gendisk *disk, int error; rq = blk_get_request(drive->queue, READ, __GFP_WAIT); - rq->cmd_type = REQ_TYPE_SPECIAL; + rq->cmd_type = REQ_TYPE_DRV_PRIV; rq->special = (char *)pc; if (buf && bufflen) { @@ -191,7 +191,7 @@ void ide_prep_sense(ide_drive_t *drive, struct request *rq) BUG_ON(sense_len > sizeof(*sense)); - if (rq->cmd_type == REQ_TYPE_SENSE || drive->sense_rq_armed) + if (rq->cmd_type == REQ_TYPE_ATA_SENSE || drive->sense_rq_armed) return; memset(sense, 0, sizeof(*sense)); @@ -210,7 +210,7 @@ void ide_prep_sense(ide_drive_t *drive, struct request *rq) sense_rq->rq_disk = rq->rq_disk; sense_rq->cmd[0] = GPCMD_REQUEST_SENSE; sense_rq->cmd[4] = cmd_len; - sense_rq->cmd_type = REQ_TYPE_SENSE; + sense_rq->cmd_type = REQ_TYPE_ATA_SENSE; sense_rq->cmd_flags |= REQ_PREEMPT; if (drive->media == ide_tape) @@ -310,7 +310,7 @@ int ide_cd_get_xferlen(struct request *rq) switch (rq->cmd_type) { case REQ_TYPE_FS: return 32768; - case REQ_TYPE_SENSE: + case REQ_TYPE_ATA_SENSE: case REQ_TYPE_BLOCK_PC: case REQ_TYPE_ATA_PC: return blk_rq_bytes(rq); @@ -477,7 +477,7 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive) if (uptodate == 0) drive->failed_pc = NULL; - if (rq->cmd_type == REQ_TYPE_SPECIAL) { + if (rq->cmd_type == REQ_TYPE_DRV_PRIV) { rq->errors = 0; error = 0; } else { diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c index 0b510bafd90e..64a6b827b3dd 100644 --- a/drivers/ide/ide-cd.c +++ b/drivers/ide/ide-cd.c @@ -210,7 +210,7 @@ static void cdrom_analyze_sense_data(ide_drive_t *drive, static void ide_cd_complete_failed_rq(ide_drive_t *drive, struct request *rq) { /* - * For REQ_TYPE_SENSE, "rq->special" points to the original + * For REQ_TYPE_ATA_SENSE, "rq->special" points to the original * failed request. Also, the sense data should be read * directly from rq which might be different from the original * sense buffer if it got copied during mapping. @@ -285,7 +285,7 @@ static int cdrom_decode_status(ide_drive_t *drive, u8 stat) "stat 0x%x", rq->cmd[0], rq->cmd_type, err, stat); - if (rq->cmd_type == REQ_TYPE_SENSE) { + if (rq->cmd_type == REQ_TYPE_ATA_SENSE) { /* * We got an error trying to get sense info from the drive * (probably while trying to recover from a former error). @@ -526,7 +526,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) ide_expiry_t *expiry = NULL; int dma_error = 0, dma, thislen, uptodate = 0; int write = (rq_data_dir(rq) == WRITE) ? 1 : 0, rc = 0; - int sense = (rq->cmd_type == REQ_TYPE_SENSE); + int sense = (rq->cmd_type == REQ_TYPE_ATA_SENSE); unsigned int timeout; u16 len; u8 ireason, stat; @@ -791,7 +791,7 @@ static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq, if (cdrom_start_rw(drive, rq) == ide_stopped) goto out_end; break; - case REQ_TYPE_SENSE: + case REQ_TYPE_ATA_SENSE: case REQ_TYPE_BLOCK_PC: case REQ_TYPE_ATA_PC: if (!rq->timeout) @@ -799,7 +799,7 @@ static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq, cdrom_do_block_pc(drive, rq); break; - case REQ_TYPE_SPECIAL: + case REQ_TYPE_DRV_PRIV: /* right now this can only be a reset... */ uptodate = 1; goto out_end; diff --git a/drivers/ide/ide-cd_ioctl.c b/drivers/ide/ide-cd_ioctl.c index 02caa7dd51c8..066e39036518 100644 --- a/drivers/ide/ide-cd_ioctl.c +++ b/drivers/ide/ide-cd_ioctl.c @@ -304,7 +304,7 @@ int ide_cdrom_reset(struct cdrom_device_info *cdi) int ret; rq = blk_get_request(drive->queue, READ, __GFP_WAIT); - rq->cmd_type = REQ_TYPE_SPECIAL; + rq->cmd_type = REQ_TYPE_DRV_PRIV; rq->cmd_flags = REQ_QUIET; ret = blk_execute_rq(drive->queue, cd->disk, rq, 0); blk_put_request(rq); diff --git a/drivers/ide/ide-devsets.c b/drivers/ide/ide-devsets.c index 9e98122f646e..b05a74d78ef5 100644 --- a/drivers/ide/ide-devsets.c +++ b/drivers/ide/ide-devsets.c @@ -166,7 +166,7 @@ int ide_devset_execute(ide_drive_t *drive, const struct ide_devset *setting, return setting->set(drive, arg); rq = blk_get_request(q, READ, __GFP_WAIT); - rq->cmd_type = REQ_TYPE_SPECIAL; + rq->cmd_type = REQ_TYPE_DRV_PRIV; rq->cmd_len = 5; rq->cmd[0] = REQ_DEVSET_EXEC; *(int *)&rq->cmd[1] = arg; diff --git a/drivers/ide/ide-eh.c b/drivers/ide/ide-eh.c index 32970664c275..d6da011299f5 100644 --- a/drivers/ide/ide-eh.c +++ b/drivers/ide/ide-eh.c @@ -129,7 +129,7 @@ ide_startstop_t ide_error(ide_drive_t *drive, const char *msg, u8 stat) if (cmd) ide_complete_cmd(drive, cmd, stat, err); - } else if (blk_pm_request(rq)) { + } else if (ata_pm_request(rq)) { rq->errors = 1; ide_complete_pm_rq(drive, rq); return ide_stopped; @@ -147,7 +147,7 @@ static inline void ide_complete_drive_reset(ide_drive_t *drive, int err) { struct request *rq = drive->hwif->rq; - if (rq && rq->cmd_type == REQ_TYPE_SPECIAL && + if (rq && rq->cmd_type == REQ_TYPE_DRV_PRIV && rq->cmd[0] == REQ_DRIVE_RESET) { if (err <= 0 && rq->errors == 0) rq->errors = -EIO; diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c index 8c6363cdd208..2fb5350c5410 100644 --- a/drivers/ide/ide-floppy.c +++ b/drivers/ide/ide-floppy.c @@ -97,7 +97,7 @@ static int ide_floppy_callback(ide_drive_t *drive, int dsc) "Aborting request!\n"); } - if (rq->cmd_type == REQ_TYPE_SPECIAL) + if (rq->cmd_type == REQ_TYPE_DRV_PRIV) rq->errors = uptodate ? 0 : IDE_DRV_ERROR_GENERAL; return uptodate; @@ -246,7 +246,7 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive, } else printk(KERN_ERR PFX "%s: I/O error\n", drive->name); - if (rq->cmd_type == REQ_TYPE_SPECIAL) { + if (rq->cmd_type == REQ_TYPE_DRV_PRIV) { rq->errors = 0; ide_complete_rq(drive, 0, blk_rq_bytes(rq)); return ide_stopped; @@ -265,8 +265,8 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive, pc = &floppy->queued_pc; idefloppy_create_rw_cmd(drive, pc, rq, (unsigned long)block); break; - case REQ_TYPE_SPECIAL: - case REQ_TYPE_SENSE: + case REQ_TYPE_DRV_PRIV: + case REQ_TYPE_ATA_SENSE: pc = (struct ide_atapi_pc *)rq->special; break; case REQ_TYPE_BLOCK_PC: diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c index 177db6d5b2f5..669ea1e45795 100644 --- a/drivers/ide/ide-io.c +++ b/drivers/ide/ide-io.c @@ -135,7 +135,7 @@ EXPORT_SYMBOL(ide_complete_rq); void ide_kill_rq(ide_drive_t *drive, struct request *rq) { - u8 drv_req = (rq->cmd_type == REQ_TYPE_SPECIAL) && rq->rq_disk; + u8 drv_req = (rq->cmd_type == REQ_TYPE_DRV_PRIV) && rq->rq_disk; u8 media = drive->media; drive->failed_pc = NULL; @@ -320,7 +320,7 @@ static ide_startstop_t start_request (ide_drive_t *drive, struct request *rq) goto kill_rq; } - if (blk_pm_request(rq)) + if (ata_pm_request(rq)) ide_check_pm_state(drive, rq); drive->hwif->tp_ops->dev_select(drive); @@ -342,8 +342,8 @@ static ide_startstop_t start_request (ide_drive_t *drive, struct request *rq) if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) return execute_drive_cmd(drive, rq); - else if (blk_pm_request(rq)) { - struct request_pm_state *pm = rq->special; + else if (ata_pm_request(rq)) { + struct ide_pm_state *pm = rq->special; #ifdef DEBUG_PM printk("%s: start_power_step(step: %d)\n", drive->name, pm->pm_step); @@ -353,7 +353,7 @@ static ide_startstop_t start_request (ide_drive_t *drive, struct request *rq) pm->pm_step == IDE_PM_COMPLETED) ide_complete_pm_rq(drive, rq); return startstop; - } else if (!rq->rq_disk && rq->cmd_type == REQ_TYPE_SPECIAL) + } else if (!rq->rq_disk && rq->cmd_type == REQ_TYPE_DRV_PRIV) /* * TODO: Once all ULDs have been modified to * check for specific op codes rather than @@ -538,7 +538,7 @@ repeat: * state machine. */ if ((drive->dev_flags & IDE_DFLAG_BLOCKED) && - blk_pm_request(rq) == 0 && + ata_pm_request(rq) == 0 && (rq->cmd_flags & REQ_PREEMPT) == 0) { /* there should be no pending command at this point */ ide_unlock_port(hwif); diff --git a/drivers/ide/ide-ioctls.c b/drivers/ide/ide-ioctls.c index 6233fa2cb8a9..aa2e9b77b20d 100644 --- a/drivers/ide/ide-ioctls.c +++ b/drivers/ide/ide-ioctls.c @@ -222,7 +222,7 @@ static int generic_drive_reset(ide_drive_t *drive) int ret = 0; rq = blk_get_request(drive->queue, READ, __GFP_WAIT); - rq->cmd_type = REQ_TYPE_SPECIAL; + rq->cmd_type = REQ_TYPE_DRV_PRIV; rq->cmd_len = 1; rq->cmd[0] = REQ_DRIVE_RESET; if (blk_execute_rq(drive->queue, NULL, rq, 1)) diff --git a/drivers/ide/ide-park.c b/drivers/ide/ide-park.c index ca958604cda2..c80868520488 100644 --- a/drivers/ide/ide-park.c +++ b/drivers/ide/ide-park.c @@ -34,7 +34,7 @@ static void issue_park_cmd(ide_drive_t *drive, unsigned long timeout) rq = blk_get_request(q, READ, __GFP_WAIT); rq->cmd[0] = REQ_PARK_HEADS; rq->cmd_len = 1; - rq->cmd_type = REQ_TYPE_SPECIAL; + rq->cmd_type = REQ_TYPE_DRV_PRIV; rq->special = &timeout; rc = blk_execute_rq(q, NULL, rq, 1); blk_put_request(rq); @@ -51,7 +51,7 @@ static void issue_park_cmd(ide_drive_t *drive, unsigned long timeout) rq->cmd[0] = REQ_UNPARK_HEADS; rq->cmd_len = 1; - rq->cmd_type = REQ_TYPE_SPECIAL; + rq->cmd_type = REQ_TYPE_DRV_PRIV; elv_add_request(q, rq, ELEVATOR_INSERT_FRONT); out: diff --git a/drivers/ide/ide-pm.c b/drivers/ide/ide-pm.c index 8d1e32d7cd97..081e43458d50 100644 --- a/drivers/ide/ide-pm.c +++ b/drivers/ide/ide-pm.c @@ -8,7 +8,7 @@ int generic_ide_suspend(struct device *dev, pm_message_t mesg) ide_drive_t *pair = ide_get_pair_dev(drive); ide_hwif_t *hwif = drive->hwif; struct request *rq; - struct request_pm_state rqpm; + struct ide_pm_state rqpm; int ret; if (ide_port_acpi(hwif)) { @@ -19,7 +19,7 @@ int generic_ide_suspend(struct device *dev, pm_message_t mesg) memset(&rqpm, 0, sizeof(rqpm)); rq = blk_get_request(drive->queue, READ, __GFP_WAIT); - rq->cmd_type = REQ_TYPE_PM_SUSPEND; + rq->cmd_type = REQ_TYPE_ATA_PM_SUSPEND; rq->special = &rqpm; rqpm.pm_step = IDE_PM_START_SUSPEND; if (mesg.event == PM_EVENT_PRETHAW) @@ -38,13 +38,43 @@ int generic_ide_suspend(struct device *dev, pm_message_t mesg) return ret; } +static void ide_end_sync_rq(struct request *rq, int error) +{ + complete(rq->end_io_data); +} + +static int ide_pm_execute_rq(struct request *rq) +{ + struct request_queue *q = rq->q; + DECLARE_COMPLETION_ONSTACK(wait); + + rq->end_io_data = &wait; + rq->end_io = ide_end_sync_rq; + + spin_lock_irq(q->queue_lock); + if (unlikely(blk_queue_dying(q))) { + rq->cmd_flags |= REQ_QUIET; + rq->errors = -ENXIO; + __blk_end_request_all(rq, rq->errors); + spin_unlock_irq(q->queue_lock); + return -ENXIO; + } + __elv_add_request(q, rq, ELEVATOR_INSERT_FRONT); + __blk_run_queue_uncond(q); + spin_unlock_irq(q->queue_lock); + + wait_for_completion_io(&wait); + + return rq->errors ? -EIO : 0; +} + int generic_ide_resume(struct device *dev) { ide_drive_t *drive = to_ide_device(dev); ide_drive_t *pair = ide_get_pair_dev(drive); ide_hwif_t *hwif = drive->hwif; struct request *rq; - struct request_pm_state rqpm; + struct ide_pm_state rqpm; int err; if (ide_port_acpi(hwif)) { @@ -59,13 +89,13 @@ int generic_ide_resume(struct device *dev) memset(&rqpm, 0, sizeof(rqpm)); rq = blk_get_request(drive->queue, READ, __GFP_WAIT); - rq->cmd_type = REQ_TYPE_PM_RESUME; + rq->cmd_type = REQ_TYPE_ATA_PM_RESUME; rq->cmd_flags |= REQ_PREEMPT; rq->special = &rqpm; rqpm.pm_step = IDE_PM_START_RESUME; rqpm.pm_state = PM_EVENT_ON; - err = blk_execute_rq(drive->queue, NULL, rq, 1); + err = ide_pm_execute_rq(rq); blk_put_request(rq); if (err == 0 && dev->driver) { @@ -80,7 +110,7 @@ int generic_ide_resume(struct device *dev) void ide_complete_power_step(ide_drive_t *drive, struct request *rq) { - struct request_pm_state *pm = rq->special; + struct ide_pm_state *pm = rq->special; #ifdef DEBUG_PM printk(KERN_INFO "%s: complete_power_step(step: %d)\n", @@ -110,7 +140,7 @@ void ide_complete_power_step(ide_drive_t *drive, struct request *rq) ide_startstop_t ide_start_power_step(ide_drive_t *drive, struct request *rq) { - struct request_pm_state *pm = rq->special; + struct ide_pm_state *pm = rq->special; struct ide_cmd cmd = { }; switch (pm->pm_step) { @@ -182,7 +212,7 @@ out_do_tf: void ide_complete_pm_rq(ide_drive_t *drive, struct request *rq) { struct request_queue *q = drive->queue; - struct request_pm_state *pm = rq->special; + struct ide_pm_state *pm = rq->special; unsigned long flags; ide_complete_power_step(drive, rq); @@ -191,10 +221,10 @@ void ide_complete_pm_rq(ide_drive_t *drive, struct request *rq) #ifdef DEBUG_PM printk("%s: completing PM request, %s\n", drive->name, - (rq->cmd_type == REQ_TYPE_PM_SUSPEND) ? "suspend" : "resume"); + (rq->cmd_type == REQ_TYPE_ATA_PM_SUSPEND) ? "suspend" : "resume"); #endif spin_lock_irqsave(q->queue_lock, flags); - if (rq->cmd_type == REQ_TYPE_PM_SUSPEND) + if (rq->cmd_type == REQ_TYPE_ATA_PM_SUSPEND) blk_stop_queue(q); else drive->dev_flags &= ~IDE_DFLAG_BLOCKED; @@ -208,13 +238,13 @@ void ide_complete_pm_rq(ide_drive_t *drive, struct request *rq) void ide_check_pm_state(ide_drive_t *drive, struct request *rq) { - struct request_pm_state *pm = rq->special; + struct ide_pm_state *pm = rq->special; - if (rq->cmd_type == REQ_TYPE_PM_SUSPEND && + if (rq->cmd_type == REQ_TYPE_ATA_PM_SUSPEND && pm->pm_step == IDE_PM_START_SUSPEND) /* Mark drive blocked when starting the suspend sequence. */ drive->dev_flags |= IDE_DFLAG_BLOCKED; - else if (rq->cmd_type == REQ_TYPE_PM_RESUME && + else if (rq->cmd_type == REQ_TYPE_ATA_PM_RESUME && pm->pm_step == IDE_PM_START_RESUME) { /* * The first thing we do on wakeup is to wait for BSY bit to diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 6eb738ca6d2f..f5d51d1d09ee 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -576,8 +576,8 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive, rq->cmd[0], (unsigned long long)blk_rq_pos(rq), blk_rq_sectors(rq)); - BUG_ON(!(rq->cmd_type == REQ_TYPE_SPECIAL || - rq->cmd_type == REQ_TYPE_SENSE)); + BUG_ON(!(rq->cmd_type == REQ_TYPE_DRV_PRIV || + rq->cmd_type == REQ_TYPE_ATA_SENSE)); /* Retry a failed packet command */ if (drive->failed_pc && drive->pc->c[0] == REQUEST_SENSE) { @@ -853,7 +853,7 @@ 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, READ, __GFP_WAIT); - rq->cmd_type = REQ_TYPE_SPECIAL; + rq->cmd_type = REQ_TYPE_DRV_PRIV; rq->cmd[13] = cmd; rq->rq_disk = tape->disk; rq->__sector = tape->first_frame; diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c index dabb88b1cbec..0979e126fff1 100644 --- a/drivers/ide/ide-taskfile.c +++ b/drivers/ide/ide-taskfile.c @@ -186,7 +186,7 @@ static ide_startstop_t task_no_data_intr(ide_drive_t *drive) tf->command == ATA_CMD_CHK_POWER) { struct request *rq = hwif->rq; - if (blk_pm_request(rq)) + if (ata_pm_request(rq)) ide_complete_pm_rq(drive, rq); else ide_finish_cmd(drive, cmd, stat); |