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authorLinus Torvalds <torvalds@linux-foundation.org>2011-05-18 06:49:02 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-05-18 06:49:02 -0700
commita2b9c1f6208126e6df6c02428c501f8853685812 (patch)
treee36762d385bb490914a72485c4da4431e4b937d3 /drivers
parent2e9521fd656f05a716b5294a7dbebd37ced05e43 (diff)
parent3ec717b7ca4ee1d75d77e4f6286430d8f01d1dbd (diff)
downloadlinux-a2b9c1f6208126e6df6c02428c501f8853685812.tar.bz2
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: block: don't delay blk_run_queue_async scsi: remove performance regression due to async queue run blk-throttle: Use task_subsys_state() to determine a task's blkio_cgroup block: rescan partitions on invalidated devices on -ENOMEDIA too cdrom: always check_disk_change() on open block: unexport DISK_EVENT_MEDIA_CHANGE for legacy/fringe drivers
Diffstat (limited to 'drivers')
-rw-r--r--drivers/block/DAC960.c1
-rw-r--r--drivers/block/amiflop.c1
-rw-r--r--drivers/block/ataflop.c1
-rw-r--r--drivers/block/floppy.c1
-rw-r--r--drivers/block/paride/pcd.c1
-rw-r--r--drivers/block/paride/pd.c1
-rw-r--r--drivers/block/paride/pf.c1
-rw-r--r--drivers/block/swim.c1
-rw-r--r--drivers/block/swim3.c1
-rw-r--r--drivers/block/ub.c1
-rw-r--r--drivers/block/xsysace.c1
-rw-r--r--drivers/cdrom/cdrom.c6
-rw-r--r--drivers/cdrom/gdrom.c1
-rw-r--r--drivers/cdrom/viocd.c1
-rw-r--r--drivers/message/i2o/i2o_block.c1
-rw-r--r--drivers/s390/char/tape_block.c1
-rw-r--r--drivers/scsi/scsi_lib.c20
-rw-r--r--drivers/scsi/scsi_scan.c2
18 files changed, 21 insertions, 22 deletions
diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c
index 8066d086578a..e086fbbbe853 100644
--- a/drivers/block/DAC960.c
+++ b/drivers/block/DAC960.c
@@ -2547,7 +2547,6 @@ static bool DAC960_RegisterBlockDevice(DAC960_Controller_T *Controller)
disk->major = MajorNumber;
disk->first_minor = n << DAC960_MaxPartitionsBits;
disk->fops = &DAC960_BlockDeviceOperations;
- disk->events = DISK_EVENT_MEDIA_CHANGE;
}
/*
Indicate the Block Device Registration completed successfully,
diff --git a/drivers/block/amiflop.c b/drivers/block/amiflop.c
index 456c0cc90dcf..8eba86bba599 100644
--- a/drivers/block/amiflop.c
+++ b/drivers/block/amiflop.c
@@ -1736,7 +1736,6 @@ static int __init fd_probe_drives(void)
disk->major = FLOPPY_MAJOR;
disk->first_minor = drive;
disk->fops = &floppy_fops;
- disk->events = DISK_EVENT_MEDIA_CHANGE;
sprintf(disk->disk_name, "fd%d", drive);
disk->private_data = &unit[drive];
set_capacity(disk, 880*2);
diff --git a/drivers/block/ataflop.c b/drivers/block/ataflop.c
index c871eae14120..ede16c64ff07 100644
--- a/drivers/block/ataflop.c
+++ b/drivers/block/ataflop.c
@@ -1964,7 +1964,6 @@ static int __init atari_floppy_init (void)
unit[i].disk->first_minor = i;
sprintf(unit[i].disk->disk_name, "fd%d", i);
unit[i].disk->fops = &floppy_fops;
- unit[i].disk->events = DISK_EVENT_MEDIA_CHANGE;
unit[i].disk->private_data = &unit[i];
unit[i].disk->queue = blk_init_queue(do_fd_request,
&ataflop_lock);
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index 301d7a9a41a6..db8f88586c8d 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -4205,7 +4205,6 @@ static int __init floppy_init(void)
disks[dr]->major = FLOPPY_MAJOR;
disks[dr]->first_minor = TOMINOR(dr);
disks[dr]->fops = &floppy_fops;
- disks[dr]->events = DISK_EVENT_MEDIA_CHANGE;
sprintf(disks[dr]->disk_name, "fd%d", dr);
init_timer(&motor_off_timer[dr]);
diff --git a/drivers/block/paride/pcd.c b/drivers/block/paride/pcd.c
index 2f2ccf686251..8690e31d9932 100644
--- a/drivers/block/paride/pcd.c
+++ b/drivers/block/paride/pcd.c
@@ -320,7 +320,6 @@ static void pcd_init_units(void)
disk->first_minor = unit;
strcpy(disk->disk_name, cd->name); /* umm... */
disk->fops = &pcd_bdops;
- disk->events = DISK_EVENT_MEDIA_CHANGE;
}
}
diff --git a/drivers/block/paride/pd.c b/drivers/block/paride/pd.c
index 21dfdb776869..869e7676d46f 100644
--- a/drivers/block/paride/pd.c
+++ b/drivers/block/paride/pd.c
@@ -837,7 +837,6 @@ static void pd_probe_drive(struct pd_unit *disk)
p->fops = &pd_fops;
p->major = major;
p->first_minor = (disk - pd) << PD_BITS;
- p->events = DISK_EVENT_MEDIA_CHANGE;
disk->gd = p;
p->private_data = disk;
p->queue = pd_queue;
diff --git a/drivers/block/paride/pf.c b/drivers/block/paride/pf.c
index 7adeb1edbf43..f21b520ef419 100644
--- a/drivers/block/paride/pf.c
+++ b/drivers/block/paride/pf.c
@@ -294,7 +294,6 @@ static void __init pf_init_units(void)
disk->first_minor = unit;
strcpy(disk->disk_name, pf->name);
disk->fops = &pf_fops;
- disk->events = DISK_EVENT_MEDIA_CHANGE;
if (!(*drives[unit])[D_PRT])
pf_drive_count++;
}
diff --git a/drivers/block/swim.c b/drivers/block/swim.c
index 24a482f2fbd6..fd5adcd55944 100644
--- a/drivers/block/swim.c
+++ b/drivers/block/swim.c
@@ -858,7 +858,6 @@ static int __devinit swim_floppy_init(struct swim_priv *swd)
swd->unit[drive].disk->first_minor = drive;
sprintf(swd->unit[drive].disk->disk_name, "fd%d", drive);
swd->unit[drive].disk->fops = &floppy_fops;
- swd->unit[drive].disk->events = DISK_EVENT_MEDIA_CHANGE;
swd->unit[drive].disk->private_data = &swd->unit[drive];
swd->unit[drive].disk->queue = swd->queue;
set_capacity(swd->unit[drive].disk, 2880);
diff --git a/drivers/block/swim3.c b/drivers/block/swim3.c
index 4c10f56facbf..773bfa792777 100644
--- a/drivers/block/swim3.c
+++ b/drivers/block/swim3.c
@@ -1163,7 +1163,6 @@ static int __devinit swim3_attach(struct macio_dev *mdev, const struct of_device
disk->major = FLOPPY_MAJOR;
disk->first_minor = i;
disk->fops = &floppy_fops;
- disk->events = DISK_EVENT_MEDIA_CHANGE;
disk->private_data = &floppy_states[i];
disk->queue = swim3_queue;
disk->flags |= GENHD_FL_REMOVABLE;
diff --git a/drivers/block/ub.c b/drivers/block/ub.c
index 68b9430c7cfe..0e376d46bdd1 100644
--- a/drivers/block/ub.c
+++ b/drivers/block/ub.c
@@ -2334,7 +2334,6 @@ static int ub_probe_lun(struct ub_dev *sc, int lnum)
disk->major = UB_MAJOR;
disk->first_minor = lun->id * UB_PARTS_PER_LUN;
disk->fops = &ub_bd_fops;
- disk->events = DISK_EVENT_MEDIA_CHANGE;
disk->private_data = lun;
disk->driverfs_dev = &sc->intf->dev;
diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c
index 645ff765cd12..6c7fd7db6dff 100644
--- a/drivers/block/xsysace.c
+++ b/drivers/block/xsysace.c
@@ -1005,7 +1005,6 @@ static int __devinit ace_setup(struct ace_device *ace)
ace->gd->major = ace_major;
ace->gd->first_minor = ace->id * ACE_NUM_MINORS;
ace->gd->fops = &ace_fops;
- ace->gd->events = DISK_EVENT_MEDIA_CHANGE;
ace->gd->queue = ace->queue;
ace->gd->private_data = ace;
snprintf(ace->gd->disk_name, 32, "xs%c", ace->id + 'a');
diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
index 514dd8efaf73..75fb965b8f72 100644
--- a/drivers/cdrom/cdrom.c
+++ b/drivers/cdrom/cdrom.c
@@ -986,6 +986,9 @@ int cdrom_open(struct cdrom_device_info *cdi, struct block_device *bdev, fmode_t
cdinfo(CD_OPEN, "entering cdrom_open\n");
+ /* open is event synchronization point, check events first */
+ check_disk_change(bdev);
+
/* if this was a O_NONBLOCK open and we should honor the flags,
* do a quick open without drive/disc integrity checks. */
cdi->use_count++;
@@ -1012,9 +1015,6 @@ int cdrom_open(struct cdrom_device_info *cdi, struct block_device *bdev, fmode_t
cdinfo(CD_OPEN, "Use count for \"/dev/%s\" now %d\n",
cdi->name, cdi->use_count);
- /* Do this on open. Don't wait for mount, because they might
- not be mounting, but opening with O_NONBLOCK */
- check_disk_change(bdev);
return 0;
err_release:
if (CDROM_CAN(CDC_LOCK) && cdi->options & CDO_LOCK) {
diff --git a/drivers/cdrom/gdrom.c b/drivers/cdrom/gdrom.c
index b2b034fea34e..3ceaf006e7f0 100644
--- a/drivers/cdrom/gdrom.c
+++ b/drivers/cdrom/gdrom.c
@@ -803,7 +803,6 @@ static int __devinit probe_gdrom(struct platform_device *devptr)
goto probe_fail_cdrom_register;
}
gd.disk->fops = &gdrom_bdops;
- gd.disk->events = DISK_EVENT_MEDIA_CHANGE;
/* latch on to the interrupt */
err = gdrom_set_interrupt_handlers();
if (err)
diff --git a/drivers/cdrom/viocd.c b/drivers/cdrom/viocd.c
index 4e874c5fa605..e427fbe45999 100644
--- a/drivers/cdrom/viocd.c
+++ b/drivers/cdrom/viocd.c
@@ -626,7 +626,6 @@ static int viocd_probe(struct vio_dev *vdev, const struct vio_device_id *id)
gendisk->queue = q;
gendisk->fops = &viocd_fops;
gendisk->flags = GENHD_FL_CD|GENHD_FL_REMOVABLE;
- gendisk->events = DISK_EVENT_MEDIA_CHANGE;
set_capacity(gendisk, 0);
gendisk->private_data = d;
d->viocd_disk = gendisk;
diff --git a/drivers/message/i2o/i2o_block.c b/drivers/message/i2o/i2o_block.c
index 643ad52e3ca2..4796bbf0ae4e 100644
--- a/drivers/message/i2o/i2o_block.c
+++ b/drivers/message/i2o/i2o_block.c
@@ -1000,7 +1000,6 @@ static struct i2o_block_device *i2o_block_device_alloc(void)
gd->major = I2O_MAJOR;
gd->queue = queue;
gd->fops = &i2o_block_fops;
- gd->events = DISK_EVENT_MEDIA_CHANGE;
gd->private_data = dev;
dev->gd = gd;
diff --git a/drivers/s390/char/tape_block.c b/drivers/s390/char/tape_block.c
index 83cea9a55e2f..1b3924c2fffd 100644
--- a/drivers/s390/char/tape_block.c
+++ b/drivers/s390/char/tape_block.c
@@ -236,7 +236,6 @@ tapeblock_setup_device(struct tape_device * device)
disk->major = tapeblock_major;
disk->first_minor = device->first_minor;
disk->fops = &tapeblock_fops;
- disk->events = DISK_EVENT_MEDIA_CHANGE;
disk->private_data = tape_get_device(device);
disk->queue = blkdat->request_queue;
set_capacity(disk, 0);
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 0bac91e72370..ec1803a48723 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -74,8 +74,6 @@ struct kmem_cache *scsi_sdb_cache;
*/
#define SCSI_QUEUE_DELAY 3
-static void scsi_run_queue(struct request_queue *q);
-
/*
* Function: scsi_unprep_request()
*
@@ -161,7 +159,7 @@ static int __scsi_queue_insert(struct scsi_cmnd *cmd, int reason, int unbusy)
blk_requeue_request(q, cmd->request);
spin_unlock_irqrestore(q->queue_lock, flags);
- scsi_run_queue(q);
+ kblockd_schedule_work(q, &device->requeue_work);
return 0;
}
@@ -438,7 +436,11 @@ static void scsi_run_queue(struct request_queue *q)
continue;
}
- blk_run_queue_async(sdev->request_queue);
+ spin_unlock(shost->host_lock);
+ spin_lock(sdev->request_queue->queue_lock);
+ __blk_run_queue(sdev->request_queue);
+ spin_unlock(sdev->request_queue->queue_lock);
+ spin_lock(shost->host_lock);
}
/* put any unprocessed entries back */
list_splice(&starved_list, &shost->starved_list);
@@ -447,6 +449,16 @@ static void scsi_run_queue(struct request_queue *q)
blk_run_queue(q);
}
+void scsi_requeue_run_queue(struct work_struct *work)
+{
+ struct scsi_device *sdev;
+ struct request_queue *q;
+
+ sdev = container_of(work, struct scsi_device, requeue_work);
+ q = sdev->request_queue;
+ scsi_run_queue(q);
+}
+
/*
* Function: scsi_requeue_command()
*
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index 087821fac8fe..58584dc0724a 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -242,6 +242,7 @@ static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget,
int display_failure_msg = 1, ret;
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
extern void scsi_evt_thread(struct work_struct *work);
+ extern void scsi_requeue_run_queue(struct work_struct *work);
sdev = kzalloc(sizeof(*sdev) + shost->transportt->device_size,
GFP_ATOMIC);
@@ -264,6 +265,7 @@ static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget,
INIT_LIST_HEAD(&sdev->event_list);
spin_lock_init(&sdev->list_lock);
INIT_WORK(&sdev->event_work, scsi_evt_thread);
+ INIT_WORK(&sdev->requeue_work, scsi_requeue_run_queue);
sdev->sdev_gendev.parent = get_device(&starget->dev);
sdev->sdev_target = starget;