Merge branch 'for-4.10/block' of git://git.kernel.dk/linux-block

Pull block layer updates from Jens Axboe:
 "This is the main block pull request this series. Contrary to previous
  release, I've kept the core and driver changes in the same branch. We
  always ended up having dependencies between the two for obvious
  reasons, so makes more sense to keep them together. That said, I'll
  probably try and keep more topical branches going forward, especially
  for cycles that end up being as busy as this one.

  The major parts of this pull request is:

   - Improved support for O_DIRECT on block devices, with a small
     private implementation instead of using the pig that is
     fs/direct-io.c. From Christoph.

   - Request completion tracking in a scalable fashion. This is utilized
     by two components in this pull, the new hybrid polling and the
     writeback queue throttling code.

   - Improved support for polling with O_DIRECT, adding a hybrid mode
     that combines pure polling with an initial sleep. From me.

   - Support for automatic throttling of writeback queues on the block
     side. This uses feedback from the device completion latencies to
     scale the queue on the block side up or down. From me.

   - Support from SMR drives in the block layer and for SD. From Hannes
     and Shaun.

   - Multi-connection support for nbd. From Josef.

   - Cleanup of request and bio flags, so we have a clear split between
     which are bio (or rq) private, and which ones are shared. From
     Christoph.

   - A set of patches from Bart, that improve how we handle queue
     stopping and starting in blk-mq.

   - Support for WRITE_ZEROES from Chaitanya.

   - Lightnvm updates from Javier/Matias.

   - Supoort for FC for the nvme-over-fabrics code. From James Smart.

   - A bunch of fixes from a whole slew of people, too many to name
     here"

* 'for-4.10/block' of git://git.kernel.dk/linux-block: (182 commits)
  blk-stat: fix a few cases of missing batch flushing
  blk-flush: run the queue when inserting blk-mq flush
  elevator: make the rqhash helpers exported
  blk-mq: abstract out blk_mq_dispatch_rq_list() helper
  blk-mq: add blk_mq_start_stopped_hw_queue()
  block: improve handling of the magic discard payload
  blk-wbt: don't throttle discard or write zeroes
  nbd: use dev_err_ratelimited in io path
  nbd: reset the setup task for NBD_CLEAR_SOCK
  nvme-fabrics: Add FC LLDD loopback driver to test FC-NVME
  nvme-fabrics: Add target support for FC transport
  nvme-fabrics: Add host support for FC transport
  nvme-fabrics: Add FC transport LLDD api definitions
  nvme-fabrics: Add FC transport FC-NVME definitions
  nvme-fabrics: Add FC transport error codes to nvme.h
  Add type 0x28 NVME type code to scsi fc headers
  nvme-fabrics: patch target code in prep for FC transport support
  nvme-fabrics: set sqe.command_id in core not transports
  parser: add u64 number parser
  nvme-rdma: align to generic ib_event logging helper
  ...

6 files changed, 35 insertions, 35 deletions

diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c
index 05352f490d60..f90ea221f7f2 100644
--- a/drivers/ide/ide-atapi.c
+++ b/drivers/ide/ide-atapi.c
@@ -211,7 +211,7 @@ void ide_prep_sense(ide_drive_t *drive, struct request *rq)
 	sense_rq->cmd[0] = GPCMD_REQUEST_SENSE;
 	sense_rq->cmd[4] = cmd_len;
 	sense_rq->cmd_type = REQ_TYPE_ATA_SENSE;
-	sense_rq->cmd_flags |= REQ_PREEMPT;
+	sense_rq->rq_flags |= RQF_PREEMPT;
 
 	if (drive->media == ide_tape)
 		sense_rq->cmd[13] = REQ_IDETAPE_PC1;
@@ -295,7 +295,7 @@ int ide_cd_expiry(ide_drive_t *drive)
 		wait = ATAPI_WAIT_PC;
 		break;
 	default:
-		if (!(rq->cmd_flags & REQ_QUIET))
+		if (!(rq->rq_flags & RQF_QUIET))
 			printk(KERN_INFO PFX "cmd 0x%x timed out\n",
 					 rq->cmd[0]);
 		wait = 0;
@@ -375,7 +375,7 @@ int ide_check_ireason(ide_drive_t *drive, struct request *rq, int len,
 	}
 
 	if (dev_is_idecd(drive) && rq->cmd_type == REQ_TYPE_ATA_PC)
-		rq->cmd_flags |= REQ_FAILED;
+		rq->rq_flags |= RQF_FAILED;
 
 	return 1;
 }
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index bf9a2ad296ed..9cbd217bc0c9 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -98,7 +98,7 @@ static int cdrom_log_sense(ide_drive_t *drive, struct request *rq)
 	struct request_sense *sense = &drive->sense_data;
 	int log = 0;
 
-	if (!sense || !rq || (rq->cmd_flags & REQ_QUIET))
+	if (!sense || !rq || (rq->rq_flags & RQF_QUIET))
 		return 0;
 
 	ide_debug_log(IDE_DBG_SENSE, "sense_key: 0x%x", sense->sense_key);
@@ -291,7 +291,7 @@ static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
 		 * (probably while trying to recover from a former error).
 		 * Just give up.
 		 */
-		rq->cmd_flags |= REQ_FAILED;
+		rq->rq_flags |= RQF_FAILED;
 		return 2;
 	}
 
@@ -311,7 +311,7 @@ static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
 			cdrom_saw_media_change(drive);
 
 			if (rq->cmd_type == REQ_TYPE_FS &&
-			    !(rq->cmd_flags & REQ_QUIET))
+			    !(rq->rq_flags & RQF_QUIET))
 				printk(KERN_ERR PFX "%s: tray open\n",
 					drive->name);
 		}
@@ -346,7 +346,7 @@ static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
 		 * No point in retrying after an illegal request or data
 		 * protect error.
 		 */
-		if (!(rq->cmd_flags & REQ_QUIET))
+		if (!(rq->rq_flags & RQF_QUIET))
 			ide_dump_status(drive, "command error", stat);
 		do_end_request = 1;
 		break;
@@ -355,14 +355,14 @@ static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
 		 * No point in re-trying a zillion times on a bad sector.
 		 * If we got here the error is not correctable.
 		 */
-		if (!(rq->cmd_flags & REQ_QUIET))
+		if (!(rq->rq_flags & RQF_QUIET))
 			ide_dump_status(drive, "media error "
 					"(bad sector)", stat);
 		do_end_request = 1;
 		break;
 	case BLANK_CHECK:
 		/* disk appears blank? */
-		if (!(rq->cmd_flags & REQ_QUIET))
+		if (!(rq->rq_flags & RQF_QUIET))
 			ide_dump_status(drive, "media error (blank)",
 					stat);
 		do_end_request = 1;
@@ -380,7 +380,7 @@ static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
 	}
 
 	if (rq->cmd_type != REQ_TYPE_FS) {
-		rq->cmd_flags |= REQ_FAILED;
+		rq->rq_flags |= RQF_FAILED;
 		do_end_request = 1;
 	}
 
@@ -422,19 +422,19 @@ static void ide_cd_request_sense_fixup(ide_drive_t *drive, struct ide_cmd *cmd)
 int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
 		    int write, void *buffer, unsigned *bufflen,
 		    struct request_sense *sense, int timeout,
-		    unsigned int cmd_flags)
+		    req_flags_t rq_flags)
 {
 	struct cdrom_info *info = drive->driver_data;
 	struct request_sense local_sense;
 	int retries = 10;
-	unsigned int flags = 0;
+	req_flags_t flags = 0;
 
 	if (!sense)
 		sense = &local_sense;
 
 	ide_debug_log(IDE_DBG_PC, "cmd[0]: 0x%x, write: 0x%x, timeout: %d, "
-				  "cmd_flags: 0x%x",
-				  cmd[0], write, timeout, cmd_flags);
+				  "rq_flags: 0x%x",
+				  cmd[0], write, timeout, rq_flags);
 
 	/* start of retry loop */
 	do {
@@ -446,7 +446,7 @@ int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
 		memcpy(rq->cmd, cmd, BLK_MAX_CDB);
 		rq->cmd_type = REQ_TYPE_ATA_PC;
 		rq->sense = sense;
-		rq->cmd_flags |= cmd_flags;
+		rq->rq_flags |= rq_flags;
 		rq->timeout = timeout;
 		if (buffer) {
 			error = blk_rq_map_kern(drive->queue, rq, buffer,
@@ -462,14 +462,14 @@ int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
 		if (buffer)
 			*bufflen = rq->resid_len;
 
-		flags = rq->cmd_flags;
+		flags = rq->rq_flags;
 		blk_put_request(rq);
 
 		/*
 		 * FIXME: we should probably abort/retry or something in case of
 		 * failure.
 		 */
-		if (flags & REQ_FAILED) {
+		if (flags & RQF_FAILED) {
 			/*
 			 * The request failed.  Retry if it was due to a unit
 			 * attention status (usually means media was changed).
@@ -494,10 +494,10 @@ int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
 		}
 
 		/* end of retry loop */
-	} while ((flags & REQ_FAILED) && retries >= 0);
+	} while ((flags & RQF_FAILED) && retries >= 0);
 
 	/* return an error if the command failed */
-	return (flags & REQ_FAILED) ? -EIO : 0;
+	return (flags & RQF_FAILED) ? -EIO : 0;
 }
 
 /*
@@ -589,7 +589,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
 					"(%u bytes)\n", drive->name, __func__,
 					cmd->nleft);
 				if (!write)
-					rq->cmd_flags |= REQ_FAILED;
+					rq->rq_flags |= RQF_FAILED;
 				uptodate = 0;
 			}
 		} else if (rq->cmd_type != REQ_TYPE_BLOCK_PC) {
@@ -607,7 +607,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
 			}
 
 			if (!uptodate)
-				rq->cmd_flags |= REQ_FAILED;
+				rq->rq_flags |= RQF_FAILED;
 		}
 		goto out_end;
 	}
@@ -745,9 +745,9 @@ static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
 				  rq->cmd[0], rq->cmd_type);
 
 	if (rq->cmd_type == REQ_TYPE_BLOCK_PC)
-		rq->cmd_flags |= REQ_QUIET;
+		rq->rq_flags |= RQF_QUIET;
 	else
-		rq->cmd_flags &= ~REQ_FAILED;
+		rq->rq_flags &= ~RQF_FAILED;
 
 	drive->dma = 0;
 
@@ -867,7 +867,7 @@ int cdrom_check_status(ide_drive_t *drive, struct request_sense *sense)
 	 */
 	cmd[7] = cdi->sanyo_slot % 3;
 
-	return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, REQ_QUIET);
+	return ide_cd_queue_pc(drive, cmd, 0, NULL, NULL, sense, 0, RQF_QUIET);
 }
 
 static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
@@ -890,7 +890,7 @@ static int cdrom_read_capacity(ide_drive_t *drive, unsigned long *capacity,
 	cmd[0] = GPCMD_READ_CDVD_CAPACITY;
 
 	stat = ide_cd_queue_pc(drive, cmd, 0, &capbuf, &len, sense, 0,
-			       REQ_QUIET);
+			       RQF_QUIET);
 	if (stat)
 		return stat;
 
@@ -943,7 +943,7 @@ static int cdrom_read_tocentry(ide_drive_t *drive, int trackno, int msf_flag,
 	if (msf_flag)
 		cmd[1] = 2;
 
-	return ide_cd_queue_pc(drive, cmd, 0, buf, &buflen, sense, 0, REQ_QUIET);
+	return ide_cd_queue_pc(drive, cmd, 0, buf, &buflen, sense, 0, RQF_QUIET);
 }
 
 /* Try to read the entire TOC for the disk into our internal buffer. */
diff --git a/drivers/ide/ide-cd.h b/drivers/ide/ide-cd.h
index 1efc936f5b66..eea60c986c4f 100644
--- a/drivers/ide/ide-cd.h
+++ b/drivers/ide/ide-cd.h
@@ -101,7 +101,7 @@ void ide_cd_log_error(const char *, struct request *, struct request_sense *);
 
 /* ide-cd.c functions used by ide-cd_ioctl.c */
 int ide_cd_queue_pc(ide_drive_t *, const unsigned char *, int, void *,
-		    unsigned *, struct request_sense *, int, unsigned int);
+		    unsigned *, struct request_sense *, int, req_flags_t);
 int ide_cd_read_toc(ide_drive_t *, struct request_sense *);
 int ide_cdrom_get_capabilities(ide_drive_t *, u8 *);
 void ide_cdrom_update_speed(ide_drive_t *, u8 *);
diff --git a/drivers/ide/ide-cd_ioctl.c b/drivers/ide/ide-cd_ioctl.c
index 5887a7a09e37..f085e3a2e1d6 100644
--- a/drivers/ide/ide-cd_ioctl.c
+++ b/drivers/ide/ide-cd_ioctl.c
@@ -305,7 +305,7 @@ int ide_cdrom_reset(struct cdrom_device_info *cdi)
 
 	rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
 	rq->cmd_type = REQ_TYPE_DRV_PRIV;
-	rq->cmd_flags = REQ_QUIET;
+	rq->rq_flags = RQF_QUIET;
 	ret = blk_execute_rq(drive->queue, cd->disk, rq, 0);
 	blk_put_request(rq);
 	/*
@@ -449,7 +449,7 @@ int ide_cdrom_packet(struct cdrom_device_info *cdi,
 			    struct packet_command *cgc)
 {
 	ide_drive_t *drive = cdi->handle;
-	unsigned int flags = 0;
+	req_flags_t flags = 0;
 	unsigned len = cgc->buflen;
 
 	if (cgc->timeout <= 0)
@@ -463,7 +463,7 @@ int ide_cdrom_packet(struct cdrom_device_info *cdi,
 		memset(cgc->sense, 0, sizeof(struct request_sense));
 
 	if (cgc->quiet)
-		flags |= REQ_QUIET;
+		flags |= RQF_QUIET;
 
 	cgc->stat = ide_cd_queue_pc(drive, cgc->cmd,
 				    cgc->data_direction == CGC_DATA_WRITE,
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index 669ea1e45795..6360bbd37efe 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -307,7 +307,7 @@ static ide_startstop_t start_request (ide_drive_t *drive, struct request *rq)
 {
 	ide_startstop_t startstop;
 
-	BUG_ON(!(rq->cmd_flags & REQ_STARTED));
+	BUG_ON(!(rq->rq_flags & RQF_STARTED));
 
 #ifdef DEBUG
 	printk("%s: start_request: current=0x%08lx\n",
@@ -316,7 +316,7 @@ static ide_startstop_t start_request (ide_drive_t *drive, struct request *rq)
 
 	/* bail early if we've exceeded max_failures */
 	if (drive->max_failures && (drive->failures > drive->max_failures)) {
-		rq->cmd_flags |= REQ_FAILED;
+		rq->rq_flags |= RQF_FAILED;
 		goto kill_rq;
 	}
 
@@ -539,7 +539,7 @@ repeat:
 		 */
 		if ((drive->dev_flags & IDE_DFLAG_BLOCKED) &&
 		    ata_pm_request(rq) == 0 &&
-		    (rq->cmd_flags & REQ_PREEMPT) == 0) {
+		    (rq->rq_flags & RQF_PREEMPT) == 0) {
 			/* there should be no pending command at this point */
 			ide_unlock_port(hwif);
 			goto plug_device;
diff --git a/drivers/ide/ide-pm.c b/drivers/ide/ide-pm.c
index e34af488693a..a015acdffb39 100644
--- a/drivers/ide/ide-pm.c
+++ b/drivers/ide/ide-pm.c
@@ -53,7 +53,7 @@ static int ide_pm_execute_rq(struct request *rq)
 
 	spin_lock_irq(q->queue_lock);
 	if (unlikely(blk_queue_dying(q))) {
-		rq->cmd_flags |= REQ_QUIET;
+		rq->rq_flags |= RQF_QUIET;
 		rq->errors = -ENXIO;
 		__blk_end_request_all(rq, rq->errors);
 		spin_unlock_irq(q->queue_lock);
@@ -90,7 +90,7 @@ int generic_ide_resume(struct device *dev)
 	memset(&rqpm, 0, sizeof(rqpm));
 	rq = blk_get_request(drive->queue, READ, __GFP_RECLAIM);
 	rq->cmd_type = REQ_TYPE_ATA_PM_RESUME;
-	rq->cmd_flags |= REQ_PREEMPT;
+	rq->rq_flags |= RQF_PREEMPT;
 	rq->special = &rqpm;
 	rqpm.pm_step = IDE_PM_START_RESUME;
 	rqpm.pm_state = PM_EVENT_ON;