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authorLinus Torvalds <torvalds@linux-foundation.org>2011-03-24 10:16:26 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-24 10:16:26 -0700
commit6c5103890057b1bb781b26b7aae38d33e4c517d8 (patch)
treee6e57961dcddcb5841acb34956e70b9dc696a880 /drivers
parent3dab04e6978e358ad2307bca563fabd6c5d2c58b (diff)
parent9d2e157d970a73b3f270b631828e03eb452d525e (diff)
Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block
* 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block: (65 commits) Documentation/iostats.txt: bit-size reference etc. cfq-iosched: removing unnecessary think time checking cfq-iosched: Don't clear queue stats when preempt. blk-throttle: Reset group slice when limits are changed blk-cgroup: Only give unaccounted_time under debug cfq-iosched: Don't set active queue in preempt block: fix non-atomic access to genhd inflight structures block: attempt to merge with existing requests on plug flush block: NULL dereference on error path in __blkdev_get() cfq-iosched: Don't update group weights when on service tree fs: assign sb->s_bdi to default_backing_dev_info if the bdi is going away block: Require subsystems to explicitly allocate bio_set integrity mempool jbd2: finish conversion from WRITE_SYNC_PLUG to WRITE_SYNC and explicit plugging jbd: finish conversion from WRITE_SYNC_PLUG to WRITE_SYNC and explicit plugging fs: make fsync_buffers_list() plug mm: make generic_writepages() use plugging blk-cgroup: Add unaccounted time to timeslice_used. block: fixup plugging stubs for !CONFIG_BLOCK block: remove obsolete comments for blkdev_issue_zeroout. blktrace: Use rq->cmd_flags directly in blk_add_trace_rq. ... Fix up conflicts in fs/{aio.c,super.c}
Diffstat (limited to 'drivers')
-rw-r--r--drivers/block/DAC960.c8
-rw-r--r--drivers/block/amiflop.c9
-rw-r--r--drivers/block/ataflop.c14
-rw-r--r--drivers/block/cciss.c6
-rw-r--r--drivers/block/cpqarray.c3
-rw-r--r--drivers/block/drbd/drbd_actlog.c4
-rw-r--r--drivers/block/drbd/drbd_bitmap.c1
-rw-r--r--drivers/block/drbd/drbd_int.h16
-rw-r--r--drivers/block/drbd/drbd_main.c36
-rw-r--r--drivers/block/drbd/drbd_receiver.c29
-rw-r--r--drivers/block/drbd/drbd_req.c4
-rw-r--r--drivers/block/drbd/drbd_worker.c1
-rw-r--r--drivers/block/drbd/drbd_wrappers.h18
-rw-r--r--drivers/block/floppy.c11
-rw-r--r--drivers/block/loop.c16
-rw-r--r--drivers/block/paride/pcd.c18
-rw-r--r--drivers/block/paride/pd.c7
-rw-r--r--drivers/block/paride/pf.c10
-rw-r--r--drivers/block/pktcdvd.c15
-rw-r--r--drivers/block/swim.c8
-rw-r--r--drivers/block/swim3.c11
-rw-r--r--drivers/block/ub.c10
-rw-r--r--drivers/block/umem.c26
-rw-r--r--drivers/block/xsysace.c9
-rw-r--r--drivers/cdrom/gdrom.c16
-rw-r--r--drivers/cdrom/viocd.c17
-rw-r--r--drivers/ide/ide-atapi.c3
-rw-r--r--drivers/ide/ide-cd.c23
-rw-r--r--drivers/ide/ide-cd.h3
-rw-r--r--drivers/ide/ide-cd_ioctl.c8
-rw-r--r--drivers/ide/ide-gd.c14
-rw-r--r--drivers/ide/ide-io.c4
-rw-r--r--drivers/ide/ide-park.c2
-rw-r--r--drivers/md/bitmap.c5
-rw-r--r--drivers/md/dm-crypt.c9
-rw-r--r--drivers/md/dm-io.c2
-rw-r--r--drivers/md/dm-kcopyd.c55
-rw-r--r--drivers/md/dm-raid.c2
-rw-r--r--drivers/md/dm-raid1.c2
-rw-r--r--drivers/md/dm-table.c31
-rw-r--r--drivers/md/dm.c52
-rw-r--r--drivers/md/dm.h2
-rw-r--r--drivers/md/linear.c20
-rw-r--r--drivers/md/md.c20
-rw-r--r--drivers/md/multipath.c38
-rw-r--r--drivers/md/raid0.c19
-rw-r--r--drivers/md/raid1.c91
-rw-r--r--drivers/md/raid10.c97
-rw-r--r--drivers/md/raid5.c63
-rw-r--r--drivers/md/raid5.h2
-rw-r--r--drivers/message/i2o/i2o_block.c17
-rw-r--r--drivers/mmc/card/queue.c3
-rw-r--r--drivers/s390/block/dasd.c2
-rw-r--r--drivers/s390/char/tape_block.c12
-rw-r--r--drivers/scsi/scsi_lib.c44
-rw-r--r--drivers/scsi/scsi_transport_fc.c2
-rw-r--r--drivers/scsi/scsi_transport_sas.c6
-rw-r--r--drivers/staging/hv/blkvsc_drv.c11
-rw-r--r--drivers/staging/westbridge/astoria/block/cyasblkdev_block.c11
-rw-r--r--drivers/target/target_core_iblock.c7
60 files changed, 284 insertions, 721 deletions
diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c
index 1f286ab461d..79882104e43 100644
--- a/drivers/block/DAC960.c
+++ b/drivers/block/DAC960.c
@@ -140,13 +140,14 @@ static int DAC960_getgeo(struct block_device *bdev, struct hd_geometry *geo)
return 0;
}
-static int DAC960_media_changed(struct gendisk *disk)
+static unsigned int DAC960_check_events(struct gendisk *disk,
+ unsigned int clearing)
{
DAC960_Controller_T *p = disk->queue->queuedata;
int drive_nr = (long)disk->private_data;
if (!p->LogicalDriveInitiallyAccessible[drive_nr])
- return 1;
+ return DISK_EVENT_MEDIA_CHANGE;
return 0;
}
@@ -163,7 +164,7 @@ static const struct block_device_operations DAC960_BlockDeviceOperations = {
.owner = THIS_MODULE,
.open = DAC960_open,
.getgeo = DAC960_getgeo,
- .media_changed = DAC960_media_changed,
+ .check_events = DAC960_check_events,
.revalidate_disk = DAC960_revalidate_disk,
};
@@ -2546,6 +2547,7 @@ 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 363855ca376..456c0cc90dc 100644
--- a/drivers/block/amiflop.c
+++ b/drivers/block/amiflop.c
@@ -1658,12 +1658,12 @@ static int floppy_release(struct gendisk *disk, fmode_t mode)
}
/*
- * floppy-change is never called from an interrupt, so we can relax a bit
+ * check_events is never called from an interrupt, so we can relax a bit
* here, sleep etc. Note that floppy-on tries to set current_DOR to point
* to the desired drive, but it will probably not survive the sleep if
* several floppies are used at the same time: thus the loop.
*/
-static int amiga_floppy_change(struct gendisk *disk)
+static unsigned amiga_check_events(struct gendisk *disk, unsigned int clearing)
{
struct amiga_floppy_struct *p = disk->private_data;
int drive = p - unit;
@@ -1686,7 +1686,7 @@ static int amiga_floppy_change(struct gendisk *disk)
p->dirty = 0;
writepending = 0; /* if this was true before, too bad! */
writefromint = 0;
- return 1;
+ return DISK_EVENT_MEDIA_CHANGE;
}
return 0;
}
@@ -1697,7 +1697,7 @@ static const struct block_device_operations floppy_fops = {
.release = floppy_release,
.ioctl = fd_ioctl,
.getgeo = fd_getgeo,
- .media_changed = amiga_floppy_change,
+ .check_events = amiga_check_events,
};
static int __init fd_probe_drives(void)
@@ -1736,6 +1736,7 @@ 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 605a67e40bb..c871eae1412 100644
--- a/drivers/block/ataflop.c
+++ b/drivers/block/ataflop.c
@@ -1324,23 +1324,24 @@ static void finish_fdc_done( int dummy )
* due to unrecognised disk changes.
*/
-static int check_floppy_change(struct gendisk *disk)
+static unsigned int floppy_check_events(struct gendisk *disk,
+ unsigned int clearing)
{
struct atari_floppy_struct *p = disk->private_data;
unsigned int drive = p - unit;
if (test_bit (drive, &fake_change)) {
/* simulated change (e.g. after formatting) */
- return 1;
+ return DISK_EVENT_MEDIA_CHANGE;
}
if (test_bit (drive, &changed_floppies)) {
/* surely changed (the WP signal changed at least once) */
- return 1;
+ return DISK_EVENT_MEDIA_CHANGE;
}
if (UD.wpstat) {
/* WP is on -> could be changed: to be sure, buffers should be
* invalidated...
*/
- return 1;
+ return DISK_EVENT_MEDIA_CHANGE;
}
return 0;
@@ -1570,7 +1571,7 @@ static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode,
* or the next access will revalidate - and clear UDT :-(
*/
- if (check_floppy_change(disk))
+ if (floppy_check_events(disk, 0))
floppy_revalidate(disk);
if (UD.flags & FTD_MSG)
@@ -1904,7 +1905,7 @@ static const struct block_device_operations floppy_fops = {
.open = floppy_unlocked_open,
.release = floppy_release,
.ioctl = fd_ioctl,
- .media_changed = check_floppy_change,
+ .check_events = floppy_check_events,
.revalidate_disk= floppy_revalidate,
};
@@ -1963,6 +1964,7 @@ 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/cciss.c b/drivers/block/cciss.c
index 9279272b373..35658f445fc 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -3170,12 +3170,6 @@ static void do_cciss_request(struct request_queue *q)
int sg_index = 0;
int chained = 0;
- /* We call start_io here in case there is a command waiting on the
- * queue that has not been sent.
- */
- if (blk_queue_plugged(q))
- goto startio;
-
queue:
creq = blk_peek_request(q);
if (!creq)
diff --git a/drivers/block/cpqarray.c b/drivers/block/cpqarray.c
index 946dad4caef..b2fceb53e80 100644
--- a/drivers/block/cpqarray.c
+++ b/drivers/block/cpqarray.c
@@ -911,9 +911,6 @@ static void do_ida_request(struct request_queue *q)
struct scatterlist tmp_sg[SG_MAX];
int i, dir, seg;
- if (blk_queue_plugged(q))
- goto startio;
-
queue_next:
creq = blk_peek_request(q);
if (!creq)
diff --git a/drivers/block/drbd/drbd_actlog.c b/drivers/block/drbd/drbd_actlog.c
index ba95cba192b..aca302492ff 100644
--- a/drivers/block/drbd/drbd_actlog.c
+++ b/drivers/block/drbd/drbd_actlog.c
@@ -80,7 +80,7 @@ static int _drbd_md_sync_page_io(struct drbd_conf *mdev,
if ((rw & WRITE) && !test_bit(MD_NO_FUA, &mdev->flags))
rw |= REQ_FUA;
- rw |= REQ_UNPLUG | REQ_SYNC;
+ rw |= REQ_SYNC;
bio = bio_alloc(GFP_NOIO, 1);
bio->bi_bdev = bdev->md_bdev;
@@ -689,8 +689,6 @@ void drbd_al_to_on_disk_bm(struct drbd_conf *mdev)
}
}
- drbd_blk_run_queue(bdev_get_queue(mdev->ldev->md_bdev));
-
/* always (try to) flush bitmap to stable storage */
drbd_md_flush(mdev);
diff --git a/drivers/block/drbd/drbd_bitmap.c b/drivers/block/drbd/drbd_bitmap.c
index fd42832f785..0645ca829a9 100644
--- a/drivers/block/drbd/drbd_bitmap.c
+++ b/drivers/block/drbd/drbd_bitmap.c
@@ -840,7 +840,6 @@ static int bm_rw(struct drbd_conf *mdev, int rw) __must_hold(local)
for (i = 0; i < num_pages; i++)
bm_page_io_async(mdev, b, i, rw);
- drbd_blk_run_queue(bdev_get_queue(mdev->ldev->md_bdev));
wait_event(b->bm_io_wait, atomic_read(&b->bm_async_io) == 0);
if (test_bit(BM_MD_IO_ERROR, &b->bm_flags)) {
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index 3803a034893..b0bd27dfc1e 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -377,7 +377,7 @@ union p_header {
#define DP_HARDBARRIER 1 /* depricated */
#define DP_RW_SYNC 2 /* equals REQ_SYNC */
#define DP_MAY_SET_IN_SYNC 4
-#define DP_UNPLUG 8 /* equals REQ_UNPLUG */
+#define DP_UNPLUG 8 /* not used anymore */
#define DP_FUA 16 /* equals REQ_FUA */
#define DP_FLUSH 32 /* equals REQ_FLUSH */
#define DP_DISCARD 64 /* equals REQ_DISCARD */
@@ -2382,20 +2382,6 @@ static inline int drbd_queue_order_type(struct drbd_conf *mdev)
return QUEUE_ORDERED_NONE;
}
-static inline void drbd_blk_run_queue(struct request_queue *q)
-{
- if (q && q->unplug_fn)
- q->unplug_fn(q);
-}
-
-static inline void drbd_kick_lo(struct drbd_conf *mdev)
-{
- if (get_ldev(mdev)) {
- drbd_blk_run_queue(bdev_get_queue(mdev->ldev->backing_bdev));
- put_ldev(mdev);
- }
-}
-
static inline void drbd_md_flush(struct drbd_conf *mdev)
{
int r;
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 29cd0dc9fe4..8a43ce0edee 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -2477,12 +2477,11 @@ static u32 bio_flags_to_wire(struct drbd_conf *mdev, unsigned long bi_rw)
{
if (mdev->agreed_pro_version >= 95)
return (bi_rw & REQ_SYNC ? DP_RW_SYNC : 0) |
- (bi_rw & REQ_UNPLUG ? DP_UNPLUG : 0) |
(bi_rw & REQ_FUA ? DP_FUA : 0) |
(bi_rw & REQ_FLUSH ? DP_FLUSH : 0) |
(bi_rw & REQ_DISCARD ? DP_DISCARD : 0);
else
- return bi_rw & (REQ_SYNC | REQ_UNPLUG) ? DP_RW_SYNC : 0;
+ return bi_rw & REQ_SYNC ? DP_RW_SYNC : 0;
}
/* Used to send write requests
@@ -2719,35 +2718,6 @@ static int drbd_release(struct gendisk *gd, fmode_t mode)
return 0;
}
-static void drbd_unplug_fn(struct request_queue *q)
-{
- struct drbd_conf *mdev = q->queuedata;
-
- /* unplug FIRST */
- spin_lock_irq(q->queue_lock);
- blk_remove_plug(q);
- spin_unlock_irq(q->queue_lock);
-
- /* only if connected */
- spin_lock_irq(&mdev->req_lock);
- if (mdev->state.pdsk >= D_INCONSISTENT && mdev->state.conn >= C_CONNECTED) {
- D_ASSERT(mdev->state.role == R_PRIMARY);
- if (test_and_clear_bit(UNPLUG_REMOTE, &mdev->flags)) {
- /* add to the data.work queue,
- * unless already queued.
- * XXX this might be a good addition to drbd_queue_work
- * anyways, to detect "double queuing" ... */
- if (list_empty(&mdev->unplug_work.list))
- drbd_queue_work(&mdev->data.work,
- &mdev->unplug_work);
- }
- }
- spin_unlock_irq(&mdev->req_lock);
-
- if (mdev->state.disk >= D_INCONSISTENT)
- drbd_kick_lo(mdev);
-}
-
static void drbd_set_defaults(struct drbd_conf *mdev)
{
/* This way we get a compile error when sync_conf grows,
@@ -3222,9 +3192,7 @@ struct drbd_conf *drbd_new_device(unsigned int minor)
blk_queue_max_segment_size(q, DRBD_MAX_SEGMENT_SIZE);
blk_queue_bounce_limit(q, BLK_BOUNCE_ANY);
blk_queue_merge_bvec(q, drbd_merge_bvec);
- q->queue_lock = &mdev->req_lock; /* needed since we use */
- /* plugging on a queue, that actually has no requests! */
- q->unplug_fn = drbd_unplug_fn;
+ q->queue_lock = &mdev->req_lock;
mdev->md_io_page = alloc_page(GFP_KERNEL);
if (!mdev->md_io_page)
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index 24487d4fb20..8e68be939de 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -187,15 +187,6 @@ static struct page *drbd_pp_first_pages_or_try_alloc(struct drbd_conf *mdev, int
return NULL;
}
-/* kick lower level device, if we have more than (arbitrary number)
- * reference counts on it, which typically are locally submitted io
- * requests. don't use unacked_cnt, so we speed up proto A and B, too. */
-static void maybe_kick_lo(struct drbd_conf *mdev)
-{
- if (atomic_read(&mdev->local_cnt) >= mdev->net_conf->unplug_watermark)
- drbd_kick_lo(mdev);
-}
-
static void reclaim_net_ee(struct drbd_conf *mdev, struct list_head *to_be_freed)
{
struct drbd_epoch_entry *e;
@@ -219,7 +210,6 @@ static void drbd_kick_lo_and_reclaim_net(struct drbd_conf *mdev)
LIST_HEAD(reclaimed);
struct drbd_epoch_entry *e, *t;
- maybe_kick_lo(mdev);
spin_lock_irq(&mdev->req_lock);
reclaim_net_ee(mdev, &reclaimed);
spin_unlock_irq(&mdev->req_lock);
@@ -436,8 +426,7 @@ void _drbd_wait_ee_list_empty(struct drbd_conf *mdev, struct list_head *head)
while (!list_empty(head)) {
prepare_to_wait(&mdev->ee_wait, &wait, TASK_UNINTERRUPTIBLE);
spin_unlock_irq(&mdev->req_lock);
- drbd_kick_lo(mdev);
- schedule();
+ io_schedule();
finish_wait(&mdev->ee_wait, &wait);
spin_lock_irq(&mdev->req_lock);
}
@@ -1111,8 +1100,6 @@ next_bio:
/* > e->sector, unless this is the first bio */
bio->bi_sector = sector;
bio->bi_bdev = mdev->ldev->backing_bdev;
- /* we special case some flags in the multi-bio case, see below
- * (REQ_UNPLUG) */
bio->bi_rw = rw;
bio->bi_private = e;
bio->bi_end_io = drbd_endio_sec;
@@ -1141,13 +1128,8 @@ next_bio:
bios = bios->bi_next;
bio->bi_next = NULL;
- /* strip off REQ_UNPLUG unless it is the last bio */
- if (bios)
- bio->bi_rw &= ~REQ_UNPLUG;
-
drbd_generic_make_request(mdev, fault_type, bio);
} while (bios);
- maybe_kick_lo(mdev);
return 0;
fail:
@@ -1167,9 +1149,6 @@ static int receive_Barrier(struct drbd_conf *mdev, enum drbd_packets cmd, unsign
inc_unacked(mdev);
- if (mdev->net_conf->wire_protocol != DRBD_PROT_C)
- drbd_kick_lo(mdev);
-
mdev->current_epoch->barrier_nr = p->barrier;
rv = drbd_may_finish_epoch(mdev, mdev->current_epoch, EV_GOT_BARRIER_NR);
@@ -1636,12 +1615,11 @@ static unsigned long write_flags_to_bio(struct drbd_conf *mdev, u32 dpf)
{
if (mdev->agreed_pro_version >= 95)
return (dpf & DP_RW_SYNC ? REQ_SYNC : 0) |
- (dpf & DP_UNPLUG ? REQ_UNPLUG : 0) |
(dpf & DP_FUA ? REQ_FUA : 0) |
(dpf & DP_FLUSH ? REQ_FUA : 0) |
(dpf & DP_DISCARD ? REQ_DISCARD : 0);
else
- return dpf & DP_RW_SYNC ? (REQ_SYNC | REQ_UNPLUG) : 0;
+ return dpf & DP_RW_SYNC ? REQ_SYNC : 0;
}
/* mirrored write */
@@ -3556,9 +3534,6 @@ static int receive_skip(struct drbd_conf *mdev, enum drbd_packets cmd, unsigned
static int receive_UnplugRemote(struct drbd_conf *mdev, enum drbd_packets cmd, unsigned int data_size)
{
- if (mdev->state.disk >= D_INCONSISTENT)
- drbd_kick_lo(mdev);
-
/* Make sure we've acked all the TCP data associated
* with the data requests being unplugged */
drbd_tcp_quickack(mdev->data.socket);
diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c
index 11a75d32a2e..ad3fc6228f2 100644
--- a/drivers/block/drbd/drbd_req.c
+++ b/drivers/block/drbd/drbd_req.c
@@ -960,10 +960,6 @@ allocate_barrier:
bio_endio(req->private_bio, -EIO);
}
- /* we need to plug ALWAYS since we possibly need to kick lo_dev.
- * we plug after submit, so we won't miss an unplug event */
- drbd_plug_device(mdev);
-
return 0;
fail_conflicting:
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index 34f224b018b..e027446590d 100644
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -792,7 +792,6 @@ int drbd_resync_finished(struct drbd_conf *mdev)
* queue (or even the read operations for those packets
* is not finished by now). Retry in 100ms. */
- drbd_kick_lo(mdev);
__set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(HZ / 10);
w = kmalloc(sizeof(struct drbd_work), GFP_ATOMIC);
diff --git a/drivers/block/drbd/drbd_wrappers.h b/drivers/block/drbd/drbd_wrappers.h
index defdb5013ea..53586fa5ae1 100644
--- a/drivers/block/drbd/drbd_wrappers.h
+++ b/drivers/block/drbd/drbd_wrappers.h
@@ -45,24 +45,6 @@ static inline void drbd_generic_make_request(struct drbd_conf *mdev,
generic_make_request(bio);
}
-static inline void drbd_plug_device(struct drbd_conf *mdev)
-{
- struct request_queue *q;
- q = bdev_get_queue(mdev->this_bdev);
-
- spin_lock_irq(q->queue_lock);
-
-/* XXX the check on !blk_queue_plugged is redundant,
- * implicitly checked in blk_plug_device */
-
- if (!blk_queue_plugged(q)) {
- blk_plug_device(q);
- del_timer(&q->unplug_timer);
- /* unplugging should not happen automatically... */
- }
- spin_unlock_irq(q->queue_lock);
-}
-
static inline int drbd_crypto_is_hash(struct crypto_tfm *tfm)
{
return (crypto_tfm_alg_type(tfm) & CRYPTO_ALG_TYPE_HASH_MASK)
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index 77fc76f8aea..301d7a9a41a 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -3770,13 +3770,14 @@ out2:
/*
* Check if the disk has been changed or if a change has been faked.
*/
-static int check_floppy_change(struct gendisk *disk)
+static unsigned int floppy_check_events(struct gendisk *disk,
+ unsigned int clearing)
{
int drive = (long)disk->private_data;
if (test_bit(FD_DISK_CHANGED_BIT, &UDRS->flags) ||
test_bit(FD_VERIFY_BIT, &UDRS->flags))
- return 1;
+ return DISK_EVENT_MEDIA_CHANGE;
if (time_after(jiffies, UDRS->last_checked + UDP->checkfreq)) {
lock_fdc(drive, false);
@@ -3788,7 +3789,7 @@ static int check_floppy_change(struct gendisk *disk)
test_bit(FD_VERIFY_BIT, &UDRS->flags) ||
test_bit(drive, &fake_change) ||
drive_no_geom(drive))
- return 1;
+ return DISK_EVENT_MEDIA_CHANGE;
return 0;
}
@@ -3837,7 +3838,6 @@ static int __floppy_read_block_0(struct block_device *bdev)
bio.bi_end_io = floppy_rb0_complete;
submit_bio(READ, &bio);
- generic_unplug_device(bdev_get_queue(bdev));
process_fd_request();
wait_for_completion(&complete);
@@ -3898,7 +3898,7 @@ static const struct block_device_operations floppy_fops = {
.release = floppy_release,
.ioctl = fd_ioctl,
.getgeo = fd_getgeo,
- .media_changed = check_floppy_change,
+ .check_events = floppy_check_events,
.revalidate_disk = floppy_revalidate,
};
@@ -4205,6 +4205,7 @@ 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/loop.c b/drivers/block/loop.c
index dbf31ec9114..a076a14ca72 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -540,17 +540,6 @@ out:
return 0;
}
-/*
- * kick off io on the underlying address space
- */
-static void loop_unplug(struct request_queue *q)
-{
- struct loop_device *lo = q->queuedata;
-
- queue_flag_clear_unlocked(QUEUE_FLAG_PLUGGED, q);
- blk_run_address_space(lo->lo_backing_file->f_mapping);
-}
-
struct switch_request {
struct file *file;
struct completion wait;
@@ -917,7 +906,6 @@ static int loop_set_fd(struct loop_device *lo, fmode_t mode,
*/
blk_queue_make_request(lo->lo_queue, loop_make_request);
lo->lo_queue->queuedata = lo;
- lo->lo_queue->unplug_fn = loop_unplug;
if (!(lo_flags & LO_FLAGS_READ_ONLY) && file->f_op->fsync)
blk_queue_flush(lo->lo_queue, REQ_FLUSH);
@@ -1019,7 +1007,6 @@ static int loop_clr_fd(struct loop_device *lo, struct block_device *bdev)
kthread_stop(lo->lo_thread);
- lo->lo_queue->unplug_fn = NULL;
lo->lo_backing_file = NULL;
loop_release_xfer(lo);
@@ -1636,9 +1623,6 @@ out:
static void loop_free(struct loop_device *lo)
{
- if (!lo->lo_queue->queue_lock)
- lo->lo_queue->queue_lock = &lo->lo_queue->__queue_lock;
-
blk_cleanup_queue(lo->lo_queue);
put_disk(lo->lo_disk);
list_del(&lo->lo_list);
diff --git a/drivers/block/paride/pcd.c b/drivers/block/paride/pcd.c
index 62cec6afd7a..2f2ccf68625 100644
--- a/drivers/block/paride/pcd.c
+++ b/drivers/block/paride/pcd.c
@@ -172,7 +172,8 @@ module_param_array(drive3, int, NULL, 0);
static int pcd_open(struct cdrom_device_info *cdi, int purpose);
static void pcd_release(struct cdrom_device_info *cdi);
static int pcd_drive_status(struct cdrom_device_info *cdi, int slot_nr);
-static int pcd_media_changed(struct cdrom_device_info *cdi, int slot_nr);
+static unsigned int pcd_check_events(struct cdrom_device_info *cdi,
+ unsigned int clearing, int slot_nr);
static int pcd_tray_move(struct cdrom_device_info *cdi, int position);
static int pcd_lock_door(struct cdrom_device_info *cdi, int lock);
static int pcd_drive_reset(struct cdrom_device_info *cdi);
@@ -257,10 +258,11 @@ static int pcd_block_ioctl(struct block_device *bdev, fmode_t mode,
return ret;
}
-static int pcd_block_media_changed(struct gendisk *disk)
+static unsigned int pcd_block_check_events(struct gendisk *disk,
+ unsigned int clearing)
{
struct pcd_unit *cd = disk->private_data;
- return cdrom_media_changed(&cd->info);
+ return cdrom_check_events(&cd->info, clearing);
}
static const struct block_device_operations pcd_bdops = {
@@ -268,14 +270,14 @@ static const struct block_device_operations pcd_bdops = {
.open = pcd_block_open,
.release = pcd_block_release,
.ioctl = pcd_block_ioctl,
- .media_changed = pcd_block_media_changed,
+ .check_events = pcd_block_check_events,
};
static struct cdrom_device_ops pcd_dops = {
.open = pcd_open,
.release = pcd_release,
.drive_status = pcd_drive_status,
- .media_changed = pcd_media_changed,
+ .check_events = pcd_check_events,
.tray_move = pcd_tray_move,
.lock_door = pcd_lock_door,
.get_mcn = pcd_get_mcn,
@@ -318,6 +320,7 @@ 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;
}
}
@@ -502,13 +505,14 @@ static int pcd_packet(struct cdrom_device_info *cdi, struct packet_command *cgc)
#define DBMSG(msg) ((verbose>1)?(msg):NULL)
-static int pcd_media_changed(struct cdrom_device_info *cdi, int slot_nr)
+static unsigned int pcd_check_events(struct cdrom_device_info *cdi,
+ unsigned int clearing, int slot_nr)
{
struct pcd_unit *cd = cdi->handle;
int res = cd->changed;
if (res)
cd->changed = 0;
- return res;
+ return res ? DISK_EVENT_MEDIA_CHANGE : 0;
}
static int pcd_lock_door(struct cdrom_device_info *cdi, int lock)
diff --git a/drivers/block/paride/pd.c b/drivers/block/paride/pd.c
index c0ee1558b9b..21dfdb77686 100644
--- a/drivers/block/paride/pd.c
+++ b/drivers/block/paride/pd.c
@@ -794,7 +794,7 @@ static int pd_release(struct gendisk *p, fmode_t mode)
return 0;
}
-static int pd_check_media(struct gendisk *p)
+static unsigned int pd_check_events(struct gendisk *p, unsigned int clearing)
{
struct pd_unit *disk = p->private_data;
int r;
@@ -803,7 +803,7 @@ static int pd_check_media(struct gendisk *p)
pd_special_command(disk, pd_media_check);
r = disk->changed;
disk->changed = 0;
- return r;
+ return r ? DISK_EVENT_MEDIA_CHANGE : 0;
}
static int pd_revalidate(struct gendisk *p)
@@ -822,7 +822,7 @@ static const struct block_device_operations pd_fops = {
.release = pd_release,
.ioctl = pd_ioctl,
.getgeo = pd_getgeo,
- .media_changed = pd_check_media,
+ .check_events = pd_check_events,
.revalidate_disk= pd_revalidate
};
@@ -837,6 +837,7 @@ 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 635f25dd9e1..7adeb1edbf4 100644
--- a/drivers/block/paride/pf.c
+++ b/drivers/block/paride/pf.c
@@ -243,7 +243,8 @@ static struct pf_unit units[PF_UNITS];
static int pf_identify(struct pf_unit *pf);
static void pf_lock(struct pf_unit *pf, int func);
static void pf_eject(struct pf_unit *pf);
-static int pf_check_media(struct gendisk *disk);
+static unsigned int pf_check_events(struct gendisk *disk,
+ unsigned int clearing);
static char pf_scratch[512]; /* scratch block buffer */
@@ -270,7 +271,7 @@ static const struct block_device_operations pf_fops = {
.release = pf_release,
.ioctl = pf_ioctl,
.getgeo = pf_getgeo,
- .media_changed = pf_check_media,
+ .check_events = pf_check_events,
};
static void __init pf_init_units(void)
@@ -293,6 +294,7 @@ 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++;
}
@@ -377,9 +379,9 @@ static int pf_release(struct gendisk *disk, fmode_t mode)
}
-static int pf_check_media(struct gendisk *disk)
+static unsigned int pf_check_events(struct gendisk *disk, unsigned int clearing)
{
- return 1;
+ return DISK_EVENT_MEDIA_CHANGE;
}
static inline int status_reg(struct pf_unit *pf)
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 77d70eebb6b..07a382eaf0a 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -1606,8 +1606,6 @@ static int kcdrwd(void *foobar)
min_sleep_time = pkt->sleep_time;
}
- generic_unplug_device(bdev_get_queue(pd->bdev));
-
VPRINTK("kcdrwd: sleeping\n");
residue = schedule_timeout(min_sleep_time);
VPRINTK("kcdrwd: wake up\n");
@@ -2796,7 +2794,8 @@ static int pkt_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd,
return ret;
}
-static int pkt_media_changed(struct gendisk *disk)
+static unsigned int pkt_check_events(struct gendisk *disk,
+ unsigned int clearing)
{
struct pktcdvd_device *pd = disk->private_data;
struct gendisk *attached_disk;
@@ -2806,9 +2805,9 @@ static int pkt_media_changed(struct gendisk *disk)
if (!pd->bdev)
return 0;
attached_disk = pd->bdev->bd_disk;
- if (!attached_disk)
+ if (!attached_disk || !attached_disk->fops->check_events)
return 0;
- return attached_disk->fops->media_changed(attached_disk);
+ return attached_disk->fops->check_events(attached_disk, clearing);
}
static const struct block_device_operations pktcdvd_ops = {
@@ -2816,7 +2815,7 @@ static const struct block_device_operations pktcdvd_ops = {
.open = pkt_open,
.release = pkt_close,
.ioctl = pkt_ioctl,
- .media_changed = pkt_media_changed,
+ .check_events = pkt_check_events,
};
static char *pktcdvd_devnode(struct gendisk *gd, mode_t *mode)
@@ -2889,6 +2888,10 @@ static int pkt_setup_dev(dev_t dev, dev_t* pkt_dev)
if (ret)
goto out_new_dev;
+ /* inherit events of the host device */
+ disk->events = pd->bdev->bd_disk->events;
+ disk->async_events = pd->bdev->bd_disk->async_events;
+
add_disk(disk);
pkt_sysfs_dev_new(pd);
diff --git a/drivers/block/swim.c b/drivers/block/swim.c
index 75333d0a332..24a482f2fbd 100644
--- a/drivers/block/swim.c
+++ b/drivers/block/swim.c
@@ -741,11 +741,12 @@ static int floppy_getgeo(struct block_device *bdev, struct hd_geometry *geo)
return 0;
}
-static int floppy_check_change(struct gendisk *disk)
+static unsigned int floppy_check_events(struct gendisk *disk,
+ unsigned int clearing)
{
struct floppy_state *fs = disk->private_data;
- return fs->ejected;
+ return fs->ejected ? DISK_EVENT_MEDIA_CHANGE : 0;
}
static int floppy_revalidate(struct gendisk *disk)
@@ -772,7 +773,7 @@ static const struct block_device_operations floppy_fops = {
.release = floppy_release,
.ioctl = floppy_ioctl,
.getgeo = floppy_getgeo,
- .media_changed = floppy_check_change,
+ .check_events = floppy_check_events,
.revalidate_disk = floppy_revalidate,
};
@@ -857,6 +858,7 @@ 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 bf3a5b85929..4c10f56facb 100644
--- a/drivers/block/swim3.c
+++ b/drivers/block/swim3.c
@@ -250,7 +250,8 @@ static int floppy_ioctl(struct block_device *bdev, fmode_t mode,
unsigned int cmd, unsigned long param);
static int floppy_open(struct block_device *bdev, fmode_t mode);
static int floppy_release(struct gendisk *disk, fmode_t mode);
-static int floppy_check_change(struct gendisk *disk);
+static unsigned int floppy_check_events(struct gendisk *disk,
+ unsigned int clearing);
static int floppy_revalidate(struct gendisk *disk);
static bool swim3_end_request(int err, unsigned int nr_bytes)
@@ -975,10 +976,11 @@ static int floppy_release(struct gendisk *disk, fmode_t mode)
return 0;
}
-static int floppy_check_change(struct gendisk *disk)
+static unsigned int floppy_check_events(struct gendisk *disk,
+ unsigned int clearing)
{
struct floppy_state *fs = disk->private_data;
- return fs->ejected;
+ return fs->ejected ? DISK_EVENT_MEDIA_CHANGE : 0;
}
static int floppy_revalidate(struct gendisk *disk)
@@ -1025,7 +1027,7 @@ static const struct block_device_operations floppy_fops = {
.open = floppy_unlocked_open,
.release = floppy_release,
.ioctl = floppy_ioctl,
- .media_changed = floppy_check_change,
+ .check_events = floppy_check_events,
.revalidate_disk= floppy_revalidate,
};
@@ -1161,6 +1163,7 @@ 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 9ae3bb71328..68b9430c7cf 100644
--- a/drivers/block/ub.c
+++ b/drivers/block/ub.c
@@ -1788,7 +1788,8 @@ static int ub_bd_revalidate(struct gendisk *disk)
*
* The return code is bool!
*/
-static int ub_bd_media_changed(struct gendisk *disk)
+static unsigned int ub_bd_check_events(struct gendisk *disk,
+ unsigned int clearing)
{
struct ub_lun *lun = disk->private_data;
@@ -1806,10 +1807,10 @@ static int ub_bd_media_changed(struct gendisk *disk)
*/
if (ub_sync_tur(lun->udev, lun) != 0) {
lun->changed = 1;
- return 1;
+ return DISK_EVENT_MEDIA_CHANGE;
}
- return lun->changed;
+ return lun->changed ? DISK_EVENT_MEDIA_CHANGE : 0;
}
static const struct block_device_operations ub_bd_fops = {
@@ -1817,7 +1818,7 @@ static const struct block_device_operations ub_bd_fops = {
.open = ub_bd_unlocked_open,
.release = ub_bd_release,
.ioctl = ub_bd_ioctl,
- .media_changed = ub_bd_media_changed,
+ .check_events = ub_bd_check_events,
.revalidate_disk = ub_bd_revalidate,
};
@@ -2333,6 +2334,7 @@ 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/umem.c b/drivers/block/umem.c
index 8be57151f5d..031ca720d92 100644
--- a/drivers/block/umem.c
+++ b/drivers/block/umem.c
@@ -241,8 +241,7 @@ static void dump_dmastat(struct cardinfo *card, unsigned int dmastat)
*
* Whenever IO on the active page completes, the Ready page is activated
* and the ex-Active page is clean out and made Ready.
- * Otherwise the Ready page is only activated when it becomes full, or
- * when mm_unplug_device is called via the unplug_io_fn.
+ * Otherwise the Ready page is only activated when it becomes full.
*
* If a request arrives while both pages a full, it is queued, and b_rdev is
* overloaded to record whether it was a read or a write.
@@ -333,17 +332,6 @@ static inline void reset_page(struct mm_page *page)
page->biotail = &page->bio;
}
-static void mm_unplug_device(struct request_queue *q)
-{
- struct cardinfo *card = q->queuedata;
- unsigned long flags;
-
- spin_lock_irqsave(&card->lock, flags);
- if (blk_remove_plug(q))
- activate(card);
- spin_unlock_irqrestore(&card->lock, flags);
-}
-
/*
* If there is room on Ready page, take
* one bh off list and add it.
@@ -535,7 +523,6 @@ static int mm_make_request(struct request_queue *q, struct bio *bio)
*card->biotail = bio;
bio->bi_next = NULL;
card->biotail = &bio->bi_next;
- blk_plug_device(q);
spin_unlock_irq(&card->lock);
return 0;
@@ -779,20 +766,10 @@ static int mm_getgeo(struct block_device *bdev, struct hd_geometry *geo)
return 0;
}
-/*
- * Future support for removable devices
- */
-static int mm_check_change(struct gendisk *disk)
-{
-/* struct cardinfo *dev = disk->private_data; */
- return 0;
-}
-
static const struct block_device_operations mm_fops = {
.owner = THIS_MODULE,
.getgeo = mm_getgeo,
.revalidate_disk = mm_revalidate,
- .media_changed = mm_check_change,
};
static int __devinit mm_pci_probe(struct pci_dev *dev,
@@ -907,7 +884,6 @@ static int __devinit mm_pci_probe(struct pci_dev *dev,
blk_queue_make_request(card->queue, mm_make_request);
card->queue->queue_lock = &card->lock;
card->queue->queuedata = card;
- card->queue->unplug_fn = mm_unplug_device;
tasklet_init(&card->tasklet, process_page, (unsigned long)card);
diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c
index 2c590a796aa..73354b081ed 100644
--- a/drivers/block/xsysace.c
+++ b/drivers/block/xsysace.c
@@ -867,12 +867,12 @@ static void ace_request(struct request_queue * q)
}
}
-static int ace_media_changed(struct gendisk *gd)
+static unsigned int ace_check_events(struct gendisk *gd, unsigned int clearing)
{
struct ace_device *ace = gd->private_data;
- dev_dbg(ace->dev, "ace_media_changed(): %i\n", ace->media_change);
+ dev_dbg(ace->dev, "ace_check_events(): %i\n", ace->media_change);
- return ace->media_change;
+ return ace->media_change ? DISK_EVENT_MEDIA_CHANGE : 0;
}
static int ace_revalidate_disk(struct gendisk *gd)
@@ -953,7 +953,7 @@ static const struct block_device_operations ace_fops = {
.owner = THIS_MODULE,
.open = ace_open,
.release = ace_release,
- .media_changed = ace_media_changed,
+ .check_events = ace_check_events,
.revalidate_disk = ace_revalidate_disk,
.getgeo = ace_getgeo,
};
@@ -1005,6 +1005,7 @@ 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/gdrom.c b/drivers/cdrom/gdrom.c
index 64a21461c40..b2b034fea34 100644
--- a/drivers/cdrom/gdrom.c
+++ b/drivers/cdrom/gdrom.c
@@ -395,10 +395,12 @@ static int gdrom_drivestatus(struct cdrom_device_info *cd_info, int ignore)
return CDS_NO_INFO;
}
-static int gdrom_mediachanged(struct cdrom_device_info *cd_info, int ignore)
+static unsigned int gdrom_check_events(struct cdrom_device_info *cd_info,
+ unsigned int clearing, int ignore)
{
/* check the sense key */
- return (__raw_readb(GDROM_ERROR_REG) & 0xF0) == 0x60;
+ return (__raw_readb(GDROM_ERROR_REG) & 0xF0) == 0x60 ?
+ DISK_EVENT_MEDIA_CHANGE : 0;
}
/* reset the G1 bus */
@@ -483,7 +485,7 @@ static struct cdrom_device_ops gdrom_ops = {
.open = gdrom_open,
.release = gdrom_release,
.drive_status = gdrom_drivestatus,
- .media_changed = gdrom_mediachanged,
+ .check_events = gdrom_check_events,
.get_last_session = gdrom_get_last_session,
.reset = gdrom_hardreset,
.audio_ioctl = gdrom_audio_ioctl,
@@ -509,9 +511,10 @@ static int gdrom_bdops_release(struct gendisk *disk, fmode_t mode)
return 0;
}
-static int gdrom_bdops_mediachanged(struct gendisk *disk)
+static unsigned int gdrom_bdops_check_events(struct gendisk *disk,
+ unsigned int clearing)
{
- return cdrom_media_changed(gd.cd_info);
+ return cdrom_check_events(gd.cd_info, clearing);
}
static int gdrom_bdops_ioctl(struct block_device *bdev, fmode_t mode,
@@ -530,7 +533,7 @@ static const struct block_device_operations gdrom_bdops = {
.owner = THIS_MODULE,
.open = gdrom_bdops_open,
.release = gdrom_bdops_release,
- .media_changed = gdrom_bdops_mediachanged,
+ .check_events = gdrom_bdops_check_events,
.ioctl = gdrom_bdops_ioctl,
};
@@ -800,6 +803,7 @@ 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 be73a9b493a..4e874c5fa60 100644
--- a/drivers/cdrom/viocd.c
+++ b/drivers/cdrom/viocd.c
@@ -186,10 +186,11 @@ static int viocd_blk_ioctl(struct block_device *bdev, fmode_t mode,
return ret;
}
-static int viocd_blk_media_changed(struct gendisk *disk)
+static unsigned int viocd_blk_check_events(struct gendisk *disk,
+ unsigned int clearing)
{
struct disk_info *di = disk->private_data;
- return cdrom_media_changed(&di->viocd_info);
+ return cdrom_check_events(&di->viocd_info, clearing);
}
static const struct block_device_operations viocd_fops = {
@@ -197,7 +198,7 @@ static const struct block_device_operations viocd_fops = {
.open = viocd_blk_open,
.release = viocd_blk_release,
.ioctl = viocd_blk_ioctl,
- .media_changed = viocd_blk_media_changed,
+ .check_events = viocd_blk_check_events,
};
static int viocd_open(struct cdrom_device_info *cdi, int purpose)
@@ -320,7 +321,8 @@ static void do_viocd_request(struct request_queue *q)
}
}
-static int viocd_media_changed(struct cdrom_device_info *cdi, int disc_nr)
+static unsigned int viocd_check_events(struct cdrom_device_info *cdi,
+ unsigned int clearing, int disc_nr)
{
struct viocd_waitevent we;
HvLpEvent_Rc hvrc;
@@ -340,7 +342,7 @@ static int viocd_media_changed(struct cdrom_device_info *cdi, int disc_nr)
if (hvrc != 0) {
pr_warning("bad rc on HvCallEvent_signalLpEventFast %d\n",
(int)hvrc);
- return -EIO;
+ return 0;
}
wait_for_completion(&we.com);
@@ -354,7 +356,7 @@ static int viocd_media_changed(struct cdrom_device_info *cdi, int disc_nr)
return 0;
}
- return we.changed;
+ return we.changed ? DISK_EVENT_MEDIA_CHANGE : 0;
}
static int viocd_lock_door(struct cdrom_device_info *cdi, int locking)
@@ -550,7 +552,7 @@ static int viocd_audio_ioctl(struct cdrom_device_info *cdi, unsigned int cmd,
static struct cdrom_device_ops viocd_dops = {
.open = viocd_open,
.release = viocd_release,
- .media_changed = viocd_media_changed,
+ .check_events = viocd_check_events,
.lock_door = viocd_lock_door,
.generic_packet = viocd_packet,
.audio_ioctl = viocd_audio_ioctl,
@@ -624,6 +626,7 @@ 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/ide/ide-atapi.c b/drivers/ide/ide-atapi.c
index e88a2cf1771..6f218e014e9 100644
--- a/drivers/ide/ide-atapi.c
+++ b/drivers/ide/ide-atapi.c
@@ -233,8 +233,7 @@ int ide_queue_sense_rq(ide_drive_t *drive, void *special)
drive->hwif->rq = NULL;
- elv_add_request(drive->queue, &drive->sense_rq,
- ELEVATOR_INSERT_FRONT, 0);
+ elv_add_request(drive->queue, &drive->sense_rq, ELEVATOR_INSERT_FRONT);
return 0;
}
EXPORT_SYMBOL_GPL(ide_queue_sense_rq);
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 0c73fe39a23..fd1e1179913 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -258,17 +258,10 @@ static int ide_cd_breathe(ide_drive_t *drive, struct request *rq)
if (time_after(jiffies, info->write_timeout))
return 0;
else {
- struct request_queue *q = drive->queue;
- unsigned long flags;
-
/*
- * take a breather relying on the unplug timer to kick us again
+ * take a breather
*/
-
- spin_lock_irqsave(q->queue_lock, flags);
- blk_plug_device(q);
- spin_unlock_irqrestore(q->queue_lock, flags);
-
+ blk_delay_queue(drive->queue, 1);
return 1;
}
}
@@ -1177,7 +1170,7 @@ static struct cdrom_device_ops ide_cdrom_dops = {
.open = ide_cdrom_open_real,
.release = ide_cdrom_release_real,
.drive_status = ide_cdrom_drive_status,
- .media_changed = ide_cdrom_check_media_change_real,
+ .check_events = ide_cdrom_check_events_real,
.tray_move = ide_cdrom_tray_move,
.lock_door = ide_cdrom_lock_door,
.select_speed = ide_cdrom_select_speed,
@@ -1514,8 +1507,6 @@ static int ide_cdrom_setup(ide_drive_t *drive)
blk_queue_dma_alignment(q, 31);
blk_queue_update_dma_pad(q, 15);
- q->unplug_delay = max((1 * HZ) / 1000, 1);
-
drive->dev_flags |= IDE_DFLAG_MEDIA_CHANGED;
drive->atapi_flags = IDE_AFLAG_NO_EJECT | ide_cd_flags(id);
@@ -1702,10 +1693,11 @@ static int idecd_ioctl(struct block_device *bdev, fmode_t mode,
}
-static int idecd_media_changed(struct gendisk *disk)
+static unsigned int idecd_check_events(struct gendisk *disk,
+ unsigned int clearing)
{
struct cdrom_info *info = ide_drv_g(disk, cdrom_info);
- return cdrom_media_changed(&info->devinfo);
+ return cdrom_check_events(&info->devinfo, clearing);
}
static int idecd_revalidate_disk(struct gendisk *disk)
@@ -1723,7 +1715,7 @@ static const struct block_device_operations idecd_ops = {
.open = idecd_open,
.release = idecd_release,
.ioctl = idecd_ioctl,
- .media_changed = idecd_media_changed,
+ .check_events = idecd_check_events,
.revalidate_disk = idecd_revalidate_disk
};
@@ -1790,6 +1782,7 @@ static int ide_cd_probe(ide_drive_t *drive)
ide_cd_read_toc(drive, &sense);
g->fops = &idecd_ops;
g->flags |= GENHD_FL_REMOVABLE;
+ g->events = DISK_EVENT_MEDIA_CHANGE;
add_disk(g);
return 0;
diff --git a/drivers/ide/ide-cd.h b/drivers/ide/ide-cd.h
index 93a3cf1b0f3..1efc936f5b6 100644
--- a/drivers/ide/ide-cd.h
+++ b/drivers/ide/ide-cd.h
@@ -111,7 +111,8 @@ int cdrom_check_status(ide_drive_t *, struct request_sense *);
int ide_cdrom_open_real(struct cdrom_device_info *, int);
void ide_cdrom_release_real(struct cdrom_device_info *);
int ide_cdrom_drive_status(struct cdrom_device_info *, int);
-int ide_cdrom_check_media_change_real(struct cdrom_device_info *, int);
+unsigned int ide_cdrom_check_events_real(struct cdrom_device_info *,
+ unsigned int clearing, int slot_nr);
int ide_cdrom_tray_move(struct cdrom_device_info *, int);
int ide_cdrom_lock_door(struct cdrom_device_info *, int);
int ide_cdrom_select_speed(struct cdrom_device_info *, int);
diff --git a/drivers/ide/ide-cd_ioctl.c b/drivers/ide/ide-cd_ioctl.c
index 766b3deeb23..2a6bc50e8a4 100644
--- a/drivers/ide/ide-cd_ioctl.c
+++ b/drivers/ide/ide-cd_ioctl.c
@@ -79,8 +79,8 @@ int ide_cdrom_drive_status(struct cdrom_device_info *cdi, int slot_nr)
return CDS_DRIVE_NOT_READY;
}
-int ide_cdrom_check_media_change_real(struct cdrom_device_info *cdi,
- int slot_nr)
+unsigned int ide_cdrom_check_events_real(struct cdrom_device_info *cdi,
+ unsigned int clearing, int slot_nr)
{
ide_drive_t *drive = cdi->handle;
int retval;
@@ -89,9 +89,9 @@ int ide_cdrom_check_media_change_real(struct cdrom_device_info *cdi,
(void) cdrom_check_status(drive, NULL);
retval = (drive->dev_flags & IDE_DFLAG_MEDIA_CHANGED) ? 1 : 0;
drive->dev_flags &= ~IDE_DFLAG_MEDIA_CHANGED;
- return retval;
+ return retval ? DISK_EVENT_MEDIA_CHANGE : 0;
} else {
- return -EINVAL;
+ return 0;
}
}
diff --git a/drivers/ide/ide-gd.c b/drivers/ide/ide-gd.c
index 35c4b43585e..c4ffd488893 100644
--- a/drivers/ide/ide-gd.c
+++ b/drivers/ide/ide-gd.c
@@ -285,11 +285,12 @@ static int ide_gd_getgeo(struct block_device *bdev, struct hd_geometry *geo)
return 0;
}
-static int ide_gd_media_changed(struct gendisk *disk)
+static unsigned int ide_gd_check_events(struct gendisk *disk,
+ unsigned int clearing)
{
struct ide_disk_obj *idkp = ide_drv_g(disk, ide_disk_obj);
ide_drive_t *drive = idkp->drive;
- int ret;
+ bool ret;
/* do not scan partitions twice if this is a removable device */
if (drive->dev_flags & IDE_DFLAG_ATTACH) {
@@ -297,10 +298,10 @@ static int ide_gd_media_changed(struct gendisk *disk)
return 0;
}
- ret = !!(drive->dev_flags & IDE_DFLAG_MEDIA_CHANGED);
+ ret = drive->dev_flags & IDE_DFLAG_MEDIA_CHANGED;
drive->dev_flags &= ~IDE_DFLAG_MEDIA_CHANGED;
- return ret;
+ return ret ? DISK_EVENT_MEDIA_CHANGE : 0;
}
static void ide_gd_unlock_native_capacity(struct gendisk *disk)
@@ -318,7 +319,7 @@ static int ide_gd_revalidate_disk(struct gendisk *disk)
struct ide_disk_obj *idkp = ide_drv_g(disk, ide_disk_obj);
ide_drive_t *drive = idkp->drive;
- if (ide_gd_media_changed(disk))
+ if (ide_gd_check_events(disk, 0))
drive->disk_ops->get_capacity(drive);
set_capacity(disk, ide_gd_capacity(drive));
@@ -340,7 +341,7 @@ static const struct block_device_operations ide_gd_ops = {
.release = ide_gd_release,
.ioctl = ide_gd_ioctl,
.getgeo = ide_gd_getgeo,
- .media_changed = ide_gd_media_changed,
+ .check_events = ide_gd_check_events,
.unlock_native_capacity = ide_gd_unlock_native_capacity,
.revalidate_disk = ide_gd_revalidate_disk
};
@@ -412,6 +413,7 @@ static int ide_gd_probe(ide_drive_t *drive)
if (drive->dev_flags & IDE_DFLAG_REMOVABLE)
g->flags = GENHD_FL_REMOVABLE;
g->fops = &ide_gd_ops;
+ g->events = DISK_EVENT_MEDIA_CHANGE;
add_disk(g);
return 0;
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index 999dac054bc..f4077840d3a 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -549,8 +549,6 @@ plug_device_2:
if (rq)
blk_requeue_request(q, rq);
- if (!elv_queue_empty(q))
- blk_plug_device(q);
}
void ide_requeue_and_plug(ide_drive_t *drive, struct request *rq)
@@ -562,8 +560,6 @@ void ide_requeue_and_plug(ide_drive_t *drive, struct request *rq)
if (rq)
blk_requeue_request(q, rq);
- if (!elv_queue_empty(q))
- blk_plug_device(q);
spin_unlock_irqrestore(q->queue_lock, flags);
}
diff --git a/drivers/ide/ide-park.c b/drivers/ide/ide-park.c
index 88a380c5a47..6ab9ab2a508 100644
--- a/drivers/ide/ide-park.c
+++ b/drivers/ide/ide-park.c
@@ -52,7 +52,7 @@ 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;
- elv_add_request(q, rq, ELEVATOR_INSERT_FRONT, 1);
+ elv_add_request(q, rq, ELEVATOR_INSERT_FRONT);
out:
return;
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index a2ce0b2da28..5c9362792f1 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -347,7 +347,7 @@ static void write_page(struct bitmap *bitmap, struct page *page, int wait)
atomic_inc(&bitmap->pending_writes);
set_buffer_locked(bh);
set_buffer_mapped(bh);
- submit_bh(WRITE | REQ_UNPLUG | REQ_SYNC, bh);
+ submit_bh(WRITE | REQ_SYNC, bh);
bh = bh->b_this_page;
}
@@ -1339,8 +1339,7 @@ int bitmap_startwrite(struct bitmap *bitmap, sector_t offset, unsigned long sect
prepare_to_wait(&bitmap->overflow_wait, &__wait,
TASK_UNINTERRUPTIBLE);
spin_unlock_irq(&bitmap->lock);
- md_unplug(bitmap->mddev);
- schedule();
+ io_schedule();
finish_wait(&bitmap->overflow_wait, &__wait);
continue;
}
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 4e054bd9166..2c62c1169f7 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -991,11 +991,6 @@ static void clone_init(struct dm_crypt_io *io, struct bio *clone)
clone->bi_destructor = dm_crypt_bio_destructor;
}
-static void kcryptd_unplug(struct crypt_config *cc)
-{
- blk_unplug(bdev_get_queue(cc->dev->bdev));
-}
-
static int kcryptd_io_read(struct dm_crypt_io *io, gfp_t gfp)
{
struct crypt_config *cc = io->target->private;
@@ -1008,10 +1003,8 @@ static int kcryptd_io_read(struct dm_crypt_io *io, gfp_t gfp)
* one in order to decrypt the whole bio data *afterwards*.
*/
clone = bio_alloc_bioset(gfp, bio_segments(base_bio), cc->bs);
- if (!clone) {
- kcryptd_unplug(cc);
+ if (!clone)
return 1;
- }
crypt_inc_pending(io);
diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c
index 136d4f71a11..76a5af00a26 100644
--- a/drivers/md/dm-io.c
+++ b/drivers/md/dm-io.c
@@ -352,7 +352,7 @@ static void dispatch_io(int rw, unsigned int num_regions,
BUG_ON(num_regions > DM_IO_MAX_REGIONS);
if (sync)
- rw |= REQ_SYNC | REQ_UNPLUG;
+ rw |= REQ_SYNC;
/*
* For multiple regions we need to be careful to rewind
diff --git a/drivers/md/dm-kcopyd.c b/drivers/md/dm-kcopyd.c
index 924f5f0084c..1bb73a13ca4 100644
--- a/drivers/md/dm-kcopyd.c
+++ b/drivers/md/dm-kcopyd.c
@@ -37,13 +37,6 @@ struct dm_kcopyd_client {
unsigned int nr_pages;
unsigned int nr_free_pages;
- /*
- * Block devices to unplug.
- * Non-NULL pointer means that a block device has some pending requests
- * and needs to be unplugged.
- */
- struct block_device *unplug[2];
-
struct dm_io_client *io_client;
wait_queue_head_t destroyq;
@@ -315,31 +308,6 @@ static int run_complete_job(struct kcopyd_job *job)
return 0;
}
-/*
- * Unplug the block device at the specified index.
- */
-static void unplug(struct dm_kcopyd_client *kc, int rw)
-{
- if (kc->unplug[rw] != NULL) {
- blk_unplug(bdev_get_queue(kc->unplug[rw]));
- kc->unplug[rw] = NULL;
- }
-}
-
-/*
- * Prepare block device unplug. If there's another device
- * to be unplugged at the same array index, we unplug that
- * device first.
- */
-static void prepare_unplug(struct dm_kcopyd_client *kc, int rw,
- struct block_device *bdev)
-{
- if (likely(kc->unplug[rw] == bdev))
- return;
- unplug(kc, rw);
- kc->unplug[rw] = bdev;
-}
-
static void complete_io(unsigned long error, void *context)
{
struct kcopyd_job *job = (struct kcopyd_job *) context;
@@ -386,16 +354,10 @@ static int run_io_job(struct kcopyd_job *job)
.client = job->kc->io_client,
};
- if (job->rw == READ) {
+ if (job->rw == READ)
r = dm_io(&io_req, 1, &job->source, NULL);
- prepare_unplug(job->kc, READ, job->source.bdev);
- } else {
- if (job->num_dests > 1)
- io_req.bi_rw |= REQ_UNPLUG;
+ else
r = dm_io(&io_req, job->num_dests, job->dests, NULL);
- if (!(io_req.bi_rw & REQ_UNPLUG))
- prepare_unplug(job->kc, WRITE, job->dests[0].bdev);
- }
return r;
}
@@ -466,6 +428,7 @@ static void do_work(struct work_struct *work)
{
struct dm_kcopyd_client *kc = container_of(work,
struct dm_kcopyd_client, kcopyd_work);
+ struct blk_plug plug;
/*
* The order that these are called is *very* important.
@@ -473,18 +436,12 @@ static void do_work(struct work_struct *work)
* Pages jobs when successful will jump onto the io jobs
* list. io jobs call wake when they complete and it all
* starts again.
- *
- * Note that io_jobs add block devices to the unplug array,
- * this array is cleared with "unplug" calls. It is thus
- * forbidden to run complete_jobs after io_jobs and before
- * unplug because the block device could be destroyed in
- * job completion callback.
*/
+ blk_start_plug(&plug);
process_jobs(&kc->complete_jobs, kc, run_complete_job);
process_jobs(&kc->pages_jobs, kc, run_pages_job);
process_jobs(&kc->io_jobs, kc, run_io_job);
- unplug(kc, READ);
- unplug(kc, WRITE);
+ blk_finish_plug(&plug);
}
/*
@@ -665,8 +622,6 @@ int dm_kcopyd_client_create(unsigned int nr_pages,
INIT_LIST_HEAD(&kc->io_jobs);
INIT_LIST_HEAD(&kc->pages_jobs);
- memset(kc->unplug, 0, sizeof(kc->unplug));
-
kc->job_pool = mempool_create_slab_pool(MIN_JOBS, _job_cache);
if (!kc->job_pool)
goto bad_slab;
diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index b9e1e15ef11..5ef136cdba9 100644
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -394,7 +394,7 @@ static void raid_unplug(struct dm_target_callbacks *cb)
{
struct raid_set *rs = container_of(cb, struct raid_set, callbacks);
- md_raid5_unplug_device(rs->md.private);
+ md_raid5_kick_device(rs->md.private);
}
/*
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index dee326775c6..976ad4688af 100644
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -842,8 +842,6 @@ static void do_mirror(struct work_struct *work)
do_reads(ms, &reads);
do_writes(ms, &writes);
do_failures(ms, &failures);
-
- dm_table_unplug_all(ms->ti->table);
}
/*-----------------------------------------------------------------
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 38e4eb1bb96..416d4e258df 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -55,6 +55,7 @@ struct dm_table {
struct dm_target *targets;
unsigned discards_supported:1;
+ unsigned integrity_supported:1;
/*
* Indicates the rw permissions for the new logical
@@ -859,7 +860,7 @@ int dm_table_alloc_md_mempools(struct dm_table *t)
return -EINVAL;
}
- t->mempools = dm_alloc_md_mempools(type);
+ t->mempools = dm_alloc_md_mempools(type, t->integrity_supported);
if (!t->mempools)
return -ENOMEM;
@@ -935,8 +936,10 @@ static int dm_table_prealloc_integrity(struct dm_table *t, struct mapped_device
struct dm_dev_internal *dd;
list_for_each_entry(dd, devices, list)
- if (bdev_get_integrity(dd->dm_dev.bdev))
+ if (bdev_get_integrity(dd->dm_dev.bdev)) {
+ t->integrity_supported = 1;
return blk_integrity_register(dm_disk(md), NULL);
+ }
return 0;
}
@@ -1275,29 +1278,6 @@ int dm_table_any_busy_target(struct dm_table *t)
return 0;
}
-void dm_table_unplug_all(struct dm_table *t)
-{
- struct dm_dev_internal *dd;
- struct list_head *devices = dm_table_get_devices(t);
- struct dm_target_callbacks *cb;
-
- list_for_each_entry(dd, devices, list) {
- struct request_queue *q = bdev_get_queue(dd->dm_dev.bdev);
- char b[BDEVNAME_SIZE];
-
- if (likely(q))
- blk_unplug(q);
- else
- DMWARN_LIMIT("%s: Cannot unplug nonexistent device %s",
- dm_device_name(t->md),
- bdevname(dd->dm_dev.bdev, b));
- }
-
- list_for_each_entry(cb, &t->target_callbacks, list)
- if (cb->unplug_fn)
- cb->unplug_fn(cb);
-}
-
struct mapped_device *dm_table_get_md(struct dm_table *t)
{
return t->md;
@@ -1345,4 +1325,3 @@ EXPORT_SYMBOL(dm_table_get_mode);
EXPORT_SYMBOL(dm_table_get_md);
EXPORT_SYMBOL(dm_table_put);
EXPORT_SYMBOL(dm_table_get);
-EXPORT_SYMBOL(dm_table_unplug_all);
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index eaa3af0e063..0cf68b47887 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -477,7 +477,8 @@ static void start_io_acct(struct dm_io *io)
cpu = part_stat_lock();
part_round_stats(cpu, &dm_disk(md)->part0);
part_stat_unlock();
- dm_disk(md)->part0.in_flight[rw] = atomic_inc_return(&md->pending[rw]);
+ atomic_set(&dm_disk(md)->part0.in_flight[rw],
+ atomic_inc_return(&md->pending[rw]));
}
static void end_io_acct(struct dm_io *io)
@@ -497,8 +498,8 @@ static void end_io_acct(struct dm_io *io)
* After this is decremented the bio must not be touched if it is
* a flush.
*/
- dm_disk(md)->part0.in_flight[rw] = pending =
- atomic_dec_return(&md->pending[rw]);
+ pending = atomic_dec_return(&md->pending[rw]);
+ atomic_set(&dm_disk(md)->part0.in_flight[rw], pending);
pending += atomic_read(&md->pending[rw^0x1]);
/* nudge anyone waiting on suspend queue */
@@ -807,8 +808,6 @@ void dm_requeue_unmapped_request(struct request *clone)
dm_unprep_request(rq);
spin_lock_irqsave(q->queue_lock, flags);
- if (elv_queue_empty(q))
- blk_plug_device(q);
blk_requeue_request(q, rq);
spin_unlock_irqrestore(q->queue_lock, flags);
@@ -1613,10 +1612,10 @@ static void dm_request_fn(struct request_queue *q)
* number of in-flight I/Os after the queue is stopped in
* dm_suspend().
*/
- while (!blk_queue_plugged(q) && !blk_queue_stopped(q)) {
+ while (!blk_queue_stopped(q)) {
rq = blk_peek_request(q);
if (!rq)
- goto plug_and_out;
+ goto delay_and_out;
/* always use block 0 to find the target for flushes for now */
pos = 0;
@@ -1627,7 +1626,7 @@ static void dm_request_fn(struct request_queue *q)
BUG_ON(!dm_target_is_valid(ti));
if (ti->type->busy && ti->type->busy(ti))
- goto plug_and_out;
+ goto delay_and_out;
blk_start_request(rq);
clone = rq->special;
@@ -1647,11 +1646,8 @@ requeued:
BUG_ON(!irqs_disabled());
spin_lock(q->queue_lock);
-plug_and_out:
- if (!elv_queue_empty(q))
- /* Some requests still remain, retry later */
- blk_plug_device(q);
-
+delay_and_out:
+ blk_delay_queue(q, HZ / 10);
out:
dm_table_put(map);
@@ -1680,20 +1676,6 @@ static int dm_lld_busy(struct request_queue *q)
return r;
}
-static void dm_unplug_all(struct request_queue *q)
-{
- struct mapped_device *md = q->queuedata;
- struct dm_table *map = dm_get_live_table(md);
-
- if (map) {
- if (dm_request_based(md))
- generic_unplug_device(q);
-
- dm_table_unplug_all(map);
- dm_table_put(map);
- }
-}
-
static int dm_any_congested(void *congested_data, int bdi_bits)
{
int r = bdi_bits;
@@ -1817,7 +1799,6 @@ static void dm_init_md_queue(struct mapped_device *md)
md->queue->backing_dev_info.congested_data = md;
blk_queue_make_request(md->queue, dm_request);
blk_queue_bounce_limit(md->queue, BLK_BOUNCE_ANY);
- md->queue->unplug_fn = dm_unplug_all;
blk_queue_merge_bvec(md->queue, dm_merge_bvec);
blk_queue_flush(md->queue, REQ_FLUSH | REQ_FUA);
}
@@ -2263,8 +2244,6 @@ static int dm_wait_for_completion(struct mapped_device *md, int interruptible)
int r = 0;
DECLARE_WAITQUEUE(wait, current);
- dm_unplug_all(md->queue);
-
add_wait_queue(&md->wait, &wait);
while (1) {
@@ -2539,7 +2518,6 @@ int dm_resume(struct mapped_device *md)
clear_bit(DMF_SUSPENDED, &md->flags);
- dm_table_unplug_all(map);
r = 0;
out:
dm_table_put(map);
@@ -2643,9 +2621,10 @@ int dm_noflush_suspending(struct dm_target *ti)
}
EXPORT_SYMBOL_GPL(dm_noflush_suspending);
-struct dm_md_mempools *dm_alloc_md_mempools(unsigned type)
+struct dm_md_mempools *dm_alloc_md_mempools(unsigned type, unsigned integrity)
{
struct dm_md_mempools *pools = kmalloc(sizeof(*pools), GFP_KERNEL);
+ unsigned int pool_size = (type == DM_TYPE_BIO_BASED) ? 16 : MIN_IOS;
if (!pools)
return NULL;
@@ -2662,13 +2641,18 @@ struct dm_md_mempools *dm_alloc_md_mempools(unsigned type)
if (!pools->tio_pool)
goto free_io_pool_and_out;
- pools->bs = (type == DM_TYPE_BIO_BASED) ?
- bioset_create(16, 0) : bioset_create(MIN_IOS, 0);
+ pools->bs = bioset_create(pool_size, 0);
if (!pools->bs)
goto free_tio_pool_and_out;
+ if (integrity && bioset_integrity_create(pools->bs, pool_size))
+ goto free_bioset_and_out;
+
return pools;
+free_bioset_and_out:
+ bioset_free(pools->bs);
+
free_tio_pool_and_out:
mempool_destroy(pools->tio_pool);
diff --git a/drivers/md/dm.h b/drivers/md/dm.h
index 0c2dd5f4af7..1aaf16746da 100644
--- a/drivers/md/dm.h
+++ b/drivers/md/dm.h
@@ -149,7 +149,7 @@ void dm_kcopyd_exit(void);
/*
* Mempool operations
*/
-struct dm_md_mempools *dm_alloc_md_mempools(unsigned type);
+struct dm_md_mempools *dm_alloc_md_mempools(unsigned type, unsigned integrity);
void dm_free_md_mempools(struct dm_md_mempools *pools);
#endif
diff --git a/drivers/md/linear.c b/drivers/md/linear.c
index 0ed7f6bc2a7..abfb59a61ed 100644
--- a/drivers/md/linear.c
+++ b/drivers/md/linear.c
@@ -87,22 +87,6 @@ static int linear_mergeable_bvec(struct request_queue *q,
return maxsectors << 9;
}
-static void linear_unplug(struct request_queue *q)
-{
- mddev_t *mddev = q->queuedata;
- linear_conf_t *conf;
- int i;
-
- rcu_read_lock();
- conf = rcu_dereference(mddev->private);
-
- for (i=0; i < mddev->raid_disks; i++) {
- struct request_queue *r_queue = bdev_get_queue(conf->disks[i].rdev->bdev);
- blk_unplug(r_queue);
- }
- rcu_read_unlock();
-}
-
static int linear_congested(void *data, int bits)
{
mddev_t *mddev = data;
@@ -224,11 +208,9 @@ static int linear_run (mddev_t *mddev)
md_set_array_sectors(mddev, linear_size(mddev, 0, 0));
blk_queue_merge_bvec(mddev->queue, linear_mergeable_bvec);
- mddev->queue->unplug_fn = linear_unplug;
mddev->queue->backing_dev_info.congested_fn = linear_congested;
mddev->queue->backing_dev_info.congested_data = mddev;
- md_integrity_register(mddev);
- return 0;
+ return md_integrity_register(mddev);
}
static void free_conf(struct rcu_head *head)
diff --git a/drivers/md/md.c b/drivers/md/md.c
index d5ad7723b17..06ecea751a3 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -780,8 +780,7 @@ void md_super_write(mddev_t *mddev, mdk_rdev_t *rdev,
bio->bi_end_io = super_written;
atomic_inc(&mddev->pending_writes);
- submit_bio(REQ_WRITE | REQ_SYNC | REQ_UNPLUG | REQ_FLUSH | REQ_FUA,
- bio);
+ submit_bio(REQ_WRITE | REQ_SYNC | REQ_FLUSH | REQ_FUA, bio);
}
void md_super_wait(mddev_t *mddev)
@@ -809,7 +808,7 @@ int sync_page_io(mdk_rdev_t *rdev, sector_t sector, int size,
struct completion event;
int ret;
- rw |= REQ_SYNC | REQ_UNPLUG;
+ rw |= REQ_SYNC;
bio->bi_bdev = (metadata_op && rdev->meta_bdev) ?
rdev->meta_bdev : rdev->bdev;
@@ -1804,8 +1803,12 @@ int md_integrity_register(mddev_t *mddev)
mdname(mddev));
return -EINVAL;
}
- printk(KERN_NOTICE "md: data integrity on %s enabled\n",
- mdname(mddev));
+ printk(KERN_NOTICE "md: data integrity enabled on %s\n", mdname(mddev));
+ if (bioset_integrity_create(mddev->bio_set, BIO_POOL_SIZE)) {
+ printk(KERN_ERR "md: failed to create integrity pool for %s\n",
+ mdname(mddev));
+ return -EINVAL;
+ }
return 0;
}
EXPORT_SYMBOL(md_integrity_register);
@@ -4817,7 +4820,6 @@ static int do_md_stop(mddev_t * mddev, int mode, int is_open)
__md_stop_writes(mddev);
md_stop(mddev);
mddev->queue->merge_bvec_fn = NULL;
- mddev->queue->unplug_fn = NULL;
mddev->queue->backing_dev_info.congested_fn = NULL;
/* tell userspace to handle 'inactive' */
@@ -6692,8 +6694,6 @@ EXPORT_SYMBOL_GPL(md_allow_write);
void md_unplug(mddev_t *mddev)
{
- if (mddev->queue)
- blk_unplug(mddev->queue);
if (mddev->plug)
mddev->plug->unplug_fn(mddev->plug);
}
@@ -6876,7 +6876,6 @@ void md_do_sync(mddev_t *mddev)
>= mddev->resync_max - mddev->curr_resync_completed
)) {
/* time to update curr_resync_completed */
- md_unplug(mddev);
wait_event(mddev->recovery_wait,
atomic_read(&mddev->recovery_active) == 0);
mddev->curr_resync_completed = j;
@@ -6952,7 +6951,6 @@ void md_do_sync(mddev_t *mddev)
* about not overloading the IO subsystem. (things like an
* e2fsck being done on the RAID array should execute fast)
*/
- md_unplug(mddev);
cond_resched();
currspeed = ((unsigned long)(io_sectors-mddev->resync_mark_cnt))/2
@@ -6971,8 +6969,6 @@ void md_do_sync(mddev_t *mddev)
* this also signals 'finished resyncing' to md_stop
*/
out:
- md_unplug(mddev);
-
wait_event(mddev->recovery_wait, !atomic_read(&mddev->recovery_active));
/* tell personality that we are finished */
diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c
index 3a62d440e27..c3589099098 100644
--- a/drivers/md/multipath.c
+++ b/drivers/md/multipath.c
@@ -106,36 +106,6 @@ static void multipath_end_request(struct bio *bio, int error)
rdev_dec_pending(rdev, conf->mddev);
}
-static void unplug_slaves(mddev_t *mddev)
-{
- multipath_conf_t *conf = mddev->private;
- int i;
-
- rcu_read_lock();
- for (i=0; i<mddev->raid_disks; i++) {
- mdk_rdev_t *rdev = rcu_dereference(conf->multipaths[i].rdev);
- if (rdev && !test_bit(Faulty, &rdev->flags)
- && atomic_read(&rdev->nr_pending)) {
- struct request_queue *r_queue = bdev_get_queue(rdev->bdev);
-
- atomic_inc(&rdev->nr_pending);
- rcu_read_unlock();
-
- blk_unplug(r_queue);
-
- rdev_dec_pending(rdev, mddev);
- rcu_read_lock();
- }
- }
- rcu_read_unlock();
-}
-
-static void multipath_unplug(struct request_queue *q)
-{
- unplug_slaves(q->queuedata);
-}
-
-
static int multipath_make_request(mddev_t *mddev, struct bio * bio)
{
multipath_conf_t *conf = mddev->private;
@@ -345,7 +315,7 @@ static int multipath_remove_disk(mddev_t *mddev, int number)
p->rdev = rdev;
goto abort;
}
- md_integrity_register(mddev);
+ err = md_integrity_register(mddev);
}
abort:
@@ -517,10 +487,12 @@ static int multipath_run (mddev_t *mddev)
*/
md_set_array_sectors(mddev, multipath_size(mddev, 0, 0));
- mddev->queue->unplug_fn = multipath_unplug;
mddev->queue->backing_dev_info.congested_fn = multipath_congested;
mddev->queue->backing_dev_info.congested_data = mddev;
- md_integrity_register(mddev);
+
+ if (md_integrity_register(mddev))
+ goto out_free_conf;
+
return 0;
out_free_conf:
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index c0ac457f121..e86bf3682e1 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -25,21 +25,6 @@
#include "raid0.h"
#include "raid5.h"
-static void raid0_unplug(struct request_queue *q)
-{
- mddev_t *mddev = q->queuedata;
- raid0_conf_t *conf = mddev->private;
- mdk_rdev_t **devlist = conf->devlist;
- int raid_disks = conf->strip_zone[0].nb_dev;
- int i;
-
- for (i=0; i < raid_disks; i++) {
- struct request_queue *r_queue = bdev_get_queue(devlist[i]->bdev);
-
- blk_unplug(r_queue);
- }
-}
-
static int raid0_congested(void *data, int bits)
{
mddev_t *mddev = data;
@@ -272,7 +257,6 @@ static int create_strip_zones(mddev_t *mddev, raid0_conf_t **private_conf)
mdname(mddev),
(unsigned long long)smallest->sectors);
}
- mddev->queue->unplug_fn = raid0_unplug;
mddev->queue->backing_dev_info.congested_fn = raid0_congested;
mddev->queue->backing_dev_info.congested_data = mddev;
@@ -395,8 +379,7 @@ static int raid0_run(mddev_t *mddev)
blk_queue_merge_bvec(mddev->queue, raid0_mergeable_bvec);
dump_zones(mddev);
- md_integrity_register(mddev);
- return 0;
+ return md_integrity_register(mddev);
}
static int raid0_stop(mddev_t *mddev)
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 06cd712807d..c2a21ae56d9 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -52,23 +52,16 @@
#define NR_RAID1_BIOS 256
-static void unplug_slaves(mddev_t *mddev);
-
static void allow_barrier(conf_t *conf);
static void lower_barrier(conf_t *conf);
static void * r1bio_pool_alloc(gfp_t gfp_flags, void *data)
{
struct pool_info *pi = data;
- r1bio_t *r1_bio;
int size = offsetof(r1bio_t, bios[pi->raid_disks]);
/* allocate a r1bio with room for raid_disks entries in the bios array */
- r1_bio = kzalloc(size, gfp_flags);
- if (!r1_bio && pi->mddev)
- unplug_slaves(pi->mddev);
-
- return r1_bio;
+ return kzalloc(size, gfp_flags);
}
static void r1bio_pool_free(void *r1_bio, void *data)
@@ -91,10 +84,8 @@ static void * r1buf_pool_alloc(gfp_t gfp_flags, void *data)
int i, j;
r1_bio = r1bio_pool_alloc(gfp_flags, pi);
- if (!r1_bio) {
- unplug_slaves(pi->mddev);
+ if (!r1_bio)
return NULL;
- }
/*
* Allocate bios : 1 for reading, n-1 for writing
@@ -520,37 +511,6 @@ static int read_balance(conf_t *conf, r1bio_t *r1_bio)
return new_disk;
}
-static void unplug_slaves(mddev_t *mddev)
-{
- conf_t *conf = mddev->private;
- int i;
-
- rcu_read_lock();
- for (i=0; i<mddev->raid_disks; i++) {
- mdk_rdev_t *rdev = rcu_dereference(conf->mirrors[i].rdev);
- if (rdev && !test_bit(Faulty, &rdev->flags) && atomic_read(&rdev->nr_pending)) {
- struct request_queue *r_queue = bdev_get_queue(rdev->bdev);
-
- atomic_inc(&rdev->nr_pending);
- rcu_read_unlock();
-
- blk_unplug(r_queue);
-
- rdev_dec_pending(rdev, mddev);
- rcu_read_lock();
- }
- }
- rcu_read_unlock();
-}
-
-static void raid1_unplug(struct request_queue *q)
-{
- mddev_t *mddev = q->queuedata;
-
- unplug_slaves(mddev);
- md_wakeup_thread(mddev->thread);
-}
-
static int raid1_congested(void *data, int bits)
{
mddev_t *mddev = data;
@@ -580,23 +540,16 @@ static int raid1_congested(void *data, int bits)
}
-static int flush_pending_writes(conf_t *conf)
+static void flush_pending_writes(conf_t *conf)
{
/* Any writes that have been queued but are awaiting
* bitmap updates get flushed here.
- * We return 1 if any requests were actually submitted.
*/
- int rv = 0;
-
spin_lock_irq(&conf->device_lock);
if (conf->pending_bio_list.head) {
struct bio *bio;
bio = bio_list_get(&conf->pending_bio_list);
- /* Only take the spinlock to quiet a warning */
- spin_lock(conf->mddev->queue->queue_lock);
- blk_remove_plug(conf->mddev->queue);
- spin_unlock(conf->mddev->queue->queue_lock);
spin_unlock_irq(&conf->device_lock);
/* flush any pending bitmap writes to
* disk before proceeding w/ I/O */
@@ -608,10 +561,14 @@ static int flush_pending_writes(conf_t *conf)
generic_make_request(bio);
bio = next;
}
- rv = 1;
} else
spin_unlock_irq(&conf->device_lock);
- return rv;
+}
+
+static void md_kick_device(mddev_t *mddev)
+{
+ blk_flush_plug(current);
+ md_wakeup_thread(mddev->thread);
}
/* Barriers....
@@ -643,8 +600,7 @@ static void raise_barrier(conf_t *conf)
/* Wait until no block IO is waiting */
wait_event_lock_irq(conf->wait_barrier, !conf->nr_waiting,
- conf->resync_lock,
- raid1_unplug(conf->mddev->queue));
+ conf->resync_lock, md_kick_device(conf->mddev));
/* block any new IO from starting */
conf->barrier++;
@@ -652,8 +608,7 @@ static void raise_barrier(conf_t *conf)
/* Now wait for all pending IO to complete */
wait_event_lock_irq(conf->wait_barrier,
!conf->nr_pending && conf->barrier < RESYNC_DEPTH,
- conf->resync_lock,
- raid1_unplug(conf->mddev->queue));
+ conf->resync_lock, md_kick_device(conf->mddev));
spin_unlock_irq(&conf->resync_lock);
}
@@ -675,7 +630,7 @@ static void wait_barrier(conf_t *conf)
conf->nr_waiting++;
wait_event_lock_irq(conf->wait_barrier, !conf->barrier,
conf->resync_lock,
- raid1_unplug(conf->mddev->queue));
+ md_kick_device(conf->mddev));
conf->nr_waiting--;
}
conf->nr_pending++;
@@ -712,7 +667,7 @@ static void freeze_array(conf_t *conf)
conf->nr_pending == conf->nr_queued+1,
conf->resync_lock,
({ flush_pending_writes(conf);
- raid1_unplug(conf->mddev->queue); }));
+ md_kick_device(conf->mddev); }));
spin_unlock_irq(&conf->resync_lock);
}
static void unfreeze_array(conf_t *conf)
@@ -962,7 +917,6 @@ static int make_request(mddev_t *mddev, struct bio * bio)
atomic_inc(&r1_bio->remaining);
spin_lock_irqsave(&conf->device_lock, flags);
bio_list_add(&conf->pending_bio_list, mbio);
- blk_plug_device_unlocked(mddev->queue);
spin_unlock_irqrestore(&conf->device_lock, flags);
}
r1_bio_write_done(r1_bio, bio->bi_vcnt, behind_pages, behind_pages != NULL);
@@ -971,7 +925,7 @@ static int make_request(mddev_t *mddev, struct bio * bio)
/* In case raid1d snuck in to freeze_array */
wake_up(&conf->wait_barrier);
- if (do_sync)
+ if (do_sync || !bitmap)
md_wakeup_thread(mddev->thread);
return 0;
@@ -1178,7 +1132,7 @@ static int raid1_remove_disk(mddev_t *mddev, int number)
p->rdev = rdev;
goto abort;
}
- md_integrity_register(mddev);
+ err = md_integrity_register(mddev);
}
abort:
@@ -1561,7 +1515,6 @@ static void raid1d(mddev_t *mddev)
unsigned long flags;
conf_t *conf = mddev->private;
struct list_head *head = &conf->retry_list;
- int unplug=0;
mdk_rdev_t *rdev;
md_check_recovery(mddev);
@@ -1569,7 +1522,7 @@ static void raid1d(mddev_t *mddev)
for (;;) {
char b[BDEVNAME_SIZE];
- unplug += flush_pending_writes(conf);
+ flush_pending_writes(conf);
spin_lock_irqsave(&conf->device_lock, flags);
if (list_empty(head)) {
@@ -1583,10 +1536,9 @@ static void raid1d(mddev_t *mddev)
mddev = r1_bio->mddev;
conf = mddev->private;
- if (test_bit(R1BIO_IsSync, &r1_bio->state)) {
+ if (test_bit(R1BIO_IsSync, &r1_bio->state))
sync_request_write(mddev, r1_bio);
- unplug = 1;
- } else {
+ else {
int disk;
/* we got a read error. Maybe the drive is bad. Maybe just
@@ -1636,14 +1588,11 @@ static void raid1d(mddev_t *mddev)
bio->bi_end_io = raid1_end_read_request;
bio->bi_rw = READ | do_sync;
bio->bi_private = r1_bio;
- unplug = 1;
generic_make_request(bio);
}
}
cond_resched();
}
- if (unplug)
- unplug_slaves(mddev);
}
@@ -2066,11 +2015,9 @@ static int run(mddev_t *mddev)
md_set_array_sectors(mddev, raid1_size(mddev, 0, 0));
- mddev->queue->unplug_fn = raid1_unplug;
mddev->queue->backing_dev_info.congested_fn = raid1_congested;
mddev->queue->backing_dev_info.congested_data = mddev;
- md_integrity_register(mddev);
- return 0;
+ return md_integrity_register(mddev);
}
static int stop(mddev_t *mddev)
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index 747d061d8e0..f7b62370b37 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -57,23 +57,16 @@
*/
#define NR_RAID10_BIOS 256
-static void unplug_slaves(mddev_t *mddev);
-
static void allow_barrier(conf_t *conf);
static void lower_barrier(conf_t *conf);
static void * r10bio_pool_alloc(gfp_t gfp_flags, void *data)
{
conf_t *conf = data;
- r10bio_t *r10_bio;
int size = offsetof(struct r10bio_s, devs[conf->copies]);
/* allocate a r10bio with room for raid_disks entries in the bios array */
- r10_bio = kzalloc(size, gfp_flags);
- if (!r10_bio && conf->mddev)
- unplug_slaves(conf->mddev);
-
- return r10_bio;
+ return kzalloc(size, gfp_flags);
}
static void r10bio_pool_free(void *r10_bio, void *data)
@@ -106,10 +99,8 @@ static void * r10buf_pool_alloc(gfp_t gfp_flags, void *data)
int nalloc;
r10_bio = r10bio_pool_alloc(gfp_flags, conf);
- if (!r10_bio) {
- unplug_slaves(conf->mddev);
+ if (!r10_bio)
return NULL;
- }
if (test_bit(MD_RECOVERY_SYNC, &conf->mddev->recovery))
nalloc = conf->copies; /* resync */
@@ -597,37 +588,6 @@ rb_out:
return disk;
}
-static void unplug_slaves(mddev_t *mddev)
-{
- conf_t *conf = mddev->private;
- int i;
-
- rcu_read_lock();
- for (i=0; i < conf->raid_disks; i++) {
- mdk_rdev_t *rdev = rcu_dereference(conf->mirrors[i].rdev);
- if (rdev && !test_bit(Faulty, &rdev->flags) && atomic_read(&rdev->nr_pending)) {
- struct request_queue *r_queue = bdev_get_queue(rdev->bdev);
-
- atomic_inc(&rdev->nr_pending);
- rcu_read_unlock();
-
- blk_unplug(r_queue);
-
- rdev_dec_pending(rdev, mddev);
- rcu_read_lock();
- }
- }
- rcu_read_unlock();
-}
-
-static void raid10_unplug(struct request_queue *q)
-{
- mddev_t *mddev = q->queuedata;
-
- unplug_slaves(q->queuedata);
- md_wakeup_thread(mddev->thread);
-}
-
static int raid10_congested(void *data, int bits)
{
mddev_t *mddev = data;
@@ -649,23 +609,16 @@ static int raid10_congested(void *data, int bits)
return ret;
}
-static int flush_pending_writes(conf_t *conf)
+static void flush_pending_writes(conf_t *conf)
{
/* Any writes that have been queued but are awaiting
* bitmap updates get flushed here.
- * We return 1 if any requests were actually submitted.
*/
- int rv = 0;
-
spin_lock_irq(&conf->device_lock);
if (conf->pending_bio_list.head) {
struct bio *bio;
bio = bio_list_get(&conf->pending_bio_list);
- /* Spinlock only taken to quiet a warning */
- spin_lock(conf->mddev->queue->queue_lock);
- blk_remove_plug(conf->mddev->queue);
- spin_unlock(conf->mddev->queue->queue_lock);
spin_unlock_irq(&conf->device_lock);
/* flush any pending bitmap writes to disk
* before proceeding w/ I/O */
@@ -677,11 +630,16 @@ static int flush_pending_writes(conf_t *conf)
generic_make_request(bio);
bio = next;
}
- rv = 1;
} else
spin_unlock_irq(&conf->device_lock);
- return rv;
}
+
+static void md_kick_device(mddev_t *mddev)
+{
+ blk_flush_plug(current);
+ md_wakeup_thread(mddev->thread);
+}
+
/* Barriers....
* Sometimes we need to suspend IO while we do something else,
* either some resync/recovery, or reconfigure the array.
@@ -711,8 +669,7 @@ static void raise_barrier(conf_t *conf, int force)
/* Wait until no block IO is waiting (unless 'force') */
wait_event_lock_irq(conf->wait_barrier, force || !conf->nr_waiting,
- conf->resync_lock,
- raid10_unplug(conf->mddev->queue));
+ conf->resync_lock, md_kick_device(conf->mddev));
/* block any new IO from starting */
conf->barrier++;
@@ -720,8 +677,7 @@ static void raise_barrier(conf_t *conf, int force)
/* No wait for all pending IO to complete */
wait_event_lock_irq(conf->wait_barrier,
!conf->nr_pending && conf->barrier < RESYNC_DEPTH,
- conf->resync_lock,
- raid10_unplug(conf->mddev->queue));
+ conf->resync_lock, md_kick_device(conf->mddev));
spin_unlock_irq(&conf->resync_lock);
}
@@ -742,7 +698,7 @@ static void wait_barrier(conf_t *conf)
conf->nr_waiting++;
wait_event_lock_irq(conf->wait_barrier, !conf->barrier,
conf->resync_lock,
- raid10_unplug(conf->mddev->queue));
+ md_kick_device(conf->mddev));
conf->nr_waiting--;
}
conf->nr_pending++;
@@ -779,7 +735,7 @@ static void freeze_array(conf_t *conf)
conf->nr_pending == conf->nr_queued+1,
conf->resync_lock,
({ flush_pending_writes(conf);
- raid10_unplug(conf->mddev->queue); }));
+ md_kick_device(conf->mddev); }));
spin_unlock_irq(&conf->resync_lock);
}
@@ -974,7 +930,6 @@ static int make_request(mddev_t *mddev, struct bio * bio)
atomic_inc(&r10_bio->remaining);
spin_lock_irqsave(&conf->device_lock, flags);
bio_list_add(&conf->pending_bio_list, mbio);
- blk_plug_device_unlocked(mddev->queue);
spin_unlock_irqrestore(&conf->device_lock, flags);
}
@@ -991,7 +946,7 @@ static int make_request(mddev_t *mddev, struct bio * bio)
/* In case raid10d snuck in to freeze_array */
wake_up(&conf->wait_barrier);
- if (do_sync)
+ if (do_sync || !mddev->bitmap)
md_wakeup_thread(mddev->thread);
return 0;
@@ -1233,7 +1188,7 @@ static int raid10_remove_disk(mddev_t *mddev, int number)
p->rdev = rdev;
goto abort;
}
- md_integrity_register(mddev);
+ err = md_integrity_register(mddev);
}
abort:
@@ -1684,7 +1639,6 @@ static void raid10d(mddev_t *mddev)
unsigned long flags;
conf_t *conf = mddev->private;
struct list_head *head = &conf->retry_list;
- int unplug=0;
mdk_rdev_t *rdev;
md_check_recovery(mddev);
@@ -1692,7 +1646,7 @@ static void raid10d(mddev_t *mddev)
for (;;) {
char b[BDEVNAME_SIZE];
- unplug += flush_pending_writes(conf);
+ flush_pending_writes(conf);
spin_lock_irqsave(&conf->device_lock, flags);
if (list_empty(head)) {
@@ -1706,13 +1660,11 @@ static void raid10d(mddev_t *mddev)
mddev = r10_bio->mddev;
conf = mddev->private;
- if (test_bit(R10BIO_IsSync, &r10_bio->state)) {
+ if (test_bit(R10BIO_IsSync, &r10_bio->state))
sync_request_write(mddev, r10_bio);
- unplug = 1;
- } else if (test_bit(R10BIO_IsRecover, &r10_bio->state)) {
+ else if (test_bit(R10BIO_IsRecover, &r10_bio->state))
recovery_request_write(mddev, r10_bio);
- unplug = 1;
- } else {
+ else {
int mirror;
/* we got a read error. Maybe the drive is bad. Maybe just
* the block and we can fix it.
@@ -1759,14 +1711,11 @@ static void raid10d(mddev_t *mddev)
bio->bi_rw = READ | do_sync;
bio->bi_private = r10_bio;
bio->bi_end_io = raid10_end_read_request;
- unplug = 1;
generic_make_request(bio);
}
}
cond_resched();
}
- if (unplug)
- unplug_slaves(mddev);
}
@@ -2377,7 +2326,6 @@ static int run(mddev_t *mddev)
md_set_array_sectors(mddev, size);
mddev->resync_max_sectors = size;
- mddev->queue->unplug_fn = raid10_unplug;
mddev->queue->backing_dev_info.congested_fn = raid10_congested;
mddev->queue->backing_dev_info.congested_data = mddev;
@@ -2395,7 +2343,10 @@ static int run(mddev_t *mddev)
if (conf->near_copies < conf->raid_disks)
blk_queue_merge_bvec(mddev->queue, raid10_mergeable_bvec);
- md_integrity_register(mddev);
+
+ if (md_integrity_register(mddev))
+ goto out_free_conf;
+
return 0;
out_free_conf:
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 78536fdbd87..e867ee42b15 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -433,8 +433,6 @@ static int has_failed(raid5_conf_t *conf)
return 0;
}
-static void unplug_slaves(mddev_t *mddev);
-
static struct stripe_head *
get_active_stripe(raid5_conf_t *conf, sector_t sector,
int previous, int noblock, int noquiesce)
@@ -463,8 +461,7 @@ get_active_stripe(raid5_conf_t *conf, sector_t sector,
< (conf->max_nr_stripes *3/4)
|| !conf->inactive_blocked),
conf->device_lock,
- md_raid5_unplug_device(conf)
- );
+ md_raid5_kick_device(conf));
conf->inactive_blocked = 0;
} else
init_stripe(sh, sector, previous);
@@ -1473,8 +1470,7 @@ static int resize_stripes(raid5_conf_t *conf, int newsize)
wait_event_lock_irq(conf->wait_for_stripe,
!list_empty(&conf->inactive_list),
conf->device_lock,
- unplug_slaves(conf->mddev)
- );
+ blk_flush_plug(current));
osh = get_free_stripe(conf);
spin_unlock_irq(&conf->device_lock);
atomic_set(&nsh->count, 1);
@@ -3645,58 +3641,19 @@ static void activate_bit_delay(raid5_conf_t *conf)
}
}
-static void unplug_slaves(mddev_t *mddev)
+void md_raid5_kick_device(raid5_conf_t *conf)
{
- raid5_conf_t *conf = mddev->private;
- int i;
- int devs = max(conf->raid_disks, conf->previous_raid_disks);
-
- rcu_read_lock();
- for (i = 0; i < devs; i++) {
- mdk_rdev_t *rdev = rcu_dereference(conf->disks[i].rdev);
- if (rdev && !test_bit(Faulty, &rdev->flags) && atomic_read(&rdev->nr_pending)) {
- struct request_queue *r_queue = bdev_get_queue(rdev->bdev);
-
- atomic_inc(&rdev->nr_pending);
- rcu_read_unlock();
-
- blk_unplug(r_queue);
-
- rdev_dec_pending(rdev, mddev);
- rcu_read_lock();
- }
- }
- rcu_read_unlock();
-}
-
-void md_raid5_unplug_device(raid5_conf_t *conf)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&conf->device_lock, flags);
-
- if (plugger_remove_plug(&conf->plug)) {
- conf->seq_flush++;
- raid5_activate_delayed(conf);
- }
+ blk_flush_plug(current);
+ raid5_activate_delayed(conf);
md_wakeup_thread(conf->mddev->thread);
-
- spin_unlock_irqrestore(&conf->device_lock, flags);
-
- unplug_slaves(conf->mddev);
}
-EXPORT_SYMBOL_GPL(md_raid5_unplug_device);
+EXPORT_SYMBOL_GPL(md_raid5_kick_device);
static void raid5_unplug(struct plug_handle *plug)
{
raid5_conf_t *conf = container_of(plug, raid5_conf_t, plug);
- md_raid5_unplug_device(conf);
-}
-static void raid5_unplug_queue(struct request_queue *q)
-{
- mddev_t *mddev = q->queuedata;
- md_raid5_unplug_device(mddev->private);
+ md_raid5_kick_device(conf);
}
int md_raid5_congested(mddev_t *mddev, int bits)
@@ -4100,7 +4057,7 @@ static int make_request(mddev_t *mddev, struct bio * bi)
* add failed due to overlap. Flush everything
* and wait a while
*/
- md_raid5_unplug_device(conf);
+ md_raid5_kick_device(conf);
release_stripe(sh);
schedule();
goto retry;
@@ -4365,7 +4322,6 @@ static inline sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *ski
if (sector_nr >= max_sector) {
/* just being told to finish up .. nothing much to do */
- unplug_slaves(mddev);
if (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery)) {
end_reshape(conf);
@@ -4569,7 +4525,6 @@ static void raid5d(mddev_t *mddev)
spin_unlock_irq(&conf->device_lock);
async_tx_issue_pending_all();
- unplug_slaves(mddev);
pr_debug("--- raid5d inactive\n");
}
@@ -5204,7 +5159,7 @@ static int run(mddev_t *mddev)
mddev->queue->backing_dev_info.congested_data = mddev;
mddev->queue->backing_dev_info.congested_fn = raid5_congested;
- mddev->queue->unplug_fn = raid5_unplug_queue;
+ mddev->queue->queue_lock = &conf->device_lock;
chunk_size = mddev->chunk_sectors << 9;
blk_queue_io_min(mddev->queue, chunk_size);
diff --git a/drivers/md/raid5.h b/drivers/md/raid5.h
index 2ace0582b40..8d563a4f022 100644
--- a/drivers/md/raid5.h
+++ b/drivers/md/raid5.h
@@ -503,6 +503,6 @@ static inline int algorithm_is_DDF(int layout)
}
extern int md_raid5_congested(mddev_t *mddev, int bits);
-extern void md_raid5_unplug_device(raid5_conf_t *conf);
+extern void md_raid5_kick_device(raid5_conf_t *conf);
extern int raid5_set_cache_size(mddev_t *mddev, int size);
#endif
diff --git a/drivers/message/i2o/i2o_block.c b/drivers/message/i2o/i2o_block.c
index ae7cad18589..47ec5bc0ed2 100644
--- a/drivers/message/i2o/i2o_block.c
+++ b/drivers/message/i2o/i2o_block.c
@@ -695,20 +695,22 @@ static int i2o_block_ioctl(struct block_device *bdev, fmode_t mode,
};
/**
- * i2o_block_media_changed - Have we seen a media change?
+ * i2o_block_check_events - Have we seen a media change?
* @disk: gendisk which should be verified
+ * @clearing: events being cleared
*
* Verifies if the media has changed.
*
* Returns 1 if the media was changed or 0 otherwise.
*/
-static int i2o_block_media_changed(struct gendisk *disk)
+static unsigned int i2o_block_check_events(struct gendisk *disk,
+ unsigned int clearing)
{
struct i2o_block_device *p = disk->private_data;
if (p->media_change_flag) {
p->media_change_flag = 0;
- return 1;
+ return DISK_EVENT_MEDIA_CHANGE;
}
return 0;
}
@@ -895,11 +897,7 @@ static void i2o_block_request_fn(struct request_queue *q)
{
struct request *req;
- while (!blk_queue_plugged(q)) {
- req = blk_peek_request(q);
- if (!req)
- break;
-
+ while ((req = blk_peek_request(q)) != NULL) {
if (req->cmd_type == REQ_TYPE_FS) {
struct i2o_block_delayed_request *dreq;
struct i2o_block_request *ireq = req->special;
@@ -950,7 +948,7 @@ static const struct block_device_operations i2o_block_fops = {
.ioctl = i2o_block_ioctl,
.compat_ioctl = i2o_block_ioctl,
.getgeo = i2o_block_getgeo,
- .media_changed = i2o_block_media_changed
+ .check_events = i2o_block_check_events,
};
/**
@@ -1002,6 +1000,7 @@ 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/mmc/card/queue.c b/drivers/mmc/card/queue.c
index 4e42d030e09..2ae727568df 100644
--- a/drivers/mmc/card/queue.c
+++ b/drivers/mmc/card/queue.c
@@ -55,8 +55,7 @@ static int mmc_queue_thread(void *d)
spin_lock_irq(q->queue_lock);
set_current_state(TASK_INTERRUPTIBLE);
- if (!blk_queue_plugged(q))
- req = blk_fetch_request(q);
+ req = blk_fetch_request(q);
mq->req = req;
spin_unlock_irq(q->queue_lock);
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 794bfd96226..4d2df2f76ea 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -1917,7 +1917,7 @@ static void __dasd_process_request_queue(struct dasd_block *block)
return;
}
/* Now we try to fetch requests from the request queue */
- while (!blk_queue_plugged(queue) && (req = blk_peek_request(queue))) {
+ while ((req = blk_peek_request(queue))) {
if (basedev->features & DASD_FEATURE_READONLY &&
rq_data_dir(req) == WRITE) {
DBF_DEV_EVENT(DBF_ERR, basedev,
diff --git a/drivers/s390/char/tape_block.c b/drivers/s390/char/tape_block.c
index 55d2d0f4eab..83cea9a55e2 100644
--- a/drivers/s390/char/tape_block.c
+++ b/drivers/s390/char/tape_block.c
@@ -48,14 +48,14 @@
static DEFINE_MUTEX(tape_block_mutex);
static int tapeblock_open(struct block_device *, fmode_t);
static int tapeblock_release(struct gendisk *, fmode_t);
-static int tapeblock_medium_changed(struct gendisk *);
+static unsigned int tapeblock_check_events(struct gendisk *, unsigned int);
static int tapeblock_revalidate_disk(struct gendisk *);
static const struct block_device_operations tapeblock_fops = {
.owner = THIS_MODULE,
.open = tapeblock_open,
.release = tapeblock_release,
- .media_changed = tapeblock_medium_changed,
+ .check_events = tapeblock_check_events,
.revalidate_disk = tapeblock_revalidate_disk,
};
@@ -161,7 +161,6 @@ tapeblock_requeue(struct work_struct *work) {
spin_lock_irq(&device->blk_data.request_queue_lock);
while (
- !blk_queue_plugged(queue) &&
blk_peek_request(queue) &&
nr_queued < TAPEBLOCK_MIN_REQUEUE
) {
@@ -237,6 +236,7 @@ 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);
@@ -340,8 +340,8 @@ tapeblock_revalidate_disk(struct gendisk *disk)
return 0;
}
-static int
-tapeblock_medium_changed(struct gendisk *disk)
+static unsigned int
+tapeblock_check_events(struct gendisk *disk, unsigned int clearing)
{
struct tape_device *device;
@@ -349,7 +349,7 @@ tapeblock_medium_changed(struct gendisk *disk)
DBF_LH(6, "tapeblock_medium_changed(%p) = %d\n",
device, device->blk_data.medium_changed);
- return device->blk_data.medium_changed;
+ return device->blk_data.medium_changed ? DISK_EVENT_MEDIA_CHANGE : 0;
}
/*
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 2d63c8ad144..6d5c7ff43f5 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -67,6 +67,13 @@ static struct scsi_host_sg_pool scsi_sg_pools[] = {
struct kmem_cache *scsi_sdb_cache;
+/*
+ * When to reinvoke queueing after a resource shortage. It's 3 msecs to
+ * not change behaviour from the previous unplug mechanism, experimentation
+ * may prove this needs changing.
+ */
+#define SCSI_QUEUE_DELAY 3
+
static void scsi_run_queue(struct request_queue *q);
/*
@@ -149,14 +156,7 @@ static int __scsi_queue_insert(struct scsi_cmnd *cmd, int reason, int unbusy)
/*
* Requeue this command. It will go before all other commands
* that are already in the queue.
- *
- * NOTE: there is magic here about the way the queue is plugged if
- * we have no outstanding commands.
- *
- * Although we *don't* plug the queue, we call the request
- * function. The SCSI request function detects the blocked condition
- * and plugs the queue appropriately.
- */
+ */
spin_lock_irqsave(q->queue_lock, flags);
blk_requeue_request(q, cmd->request);
spin_unlock_irqrestore(q->queue_lock, flags);
@@ -1226,11 +1226,11 @@ int scsi_prep_return(struct request_queue *q, struct request *req, int ret)
case BLKPREP_DEFER:
/*
* If we defer, the blk_peek_request() returns NULL, but the
- * queue must be restarted, so we plug here if no returning
- * command will automatically do that.
+ * queue must be restarted, so we schedule a callback to happen
+ * shortly.
*/
if (sdev->device_busy == 0)
- blk_plug_device(q);
+ blk_delay_queue(q, SCSI_QUEUE_DELAY);
break;
default:
req->cmd_flags |= REQ_DONTPREP;
@@ -1269,7 +1269,7 @@ static inline int scsi_dev_queue_ready(struct request_queue *q,
sdev_printk(KERN_INFO, sdev,
"unblocking device at zero depth\n"));
} else {
- blk_plug_device(q);
+ blk_delay_queue(q, SCSI_QUEUE_DELAY);
return 0;
}
}
@@ -1499,7 +1499,7 @@ static void scsi_request_fn(struct request_queue *q)
* the host is no longer able to accept any more requests.
*/
shost = sdev->host;
- while (!blk_queue_plugged(q)) {
+ for (;;) {
int rtn;
/*
* get next queueable request. We do this early to make sure
@@ -1578,15 +1578,8 @@ static void scsi_request_fn(struct request_queue *q)
*/
rtn = scsi_dispatch_cmd(cmd);
spin_lock_irq(q->queue_lock);
- if(rtn) {
- /* we're refusing the command; because of
- * the way locks get dropped, we need to
- * check here if plugging is required */
- if(sdev->device_busy == 0)
- blk_plug_device(q);
-
- break;
- }
+ if (rtn)
+ goto out_delay;
}
goto out;
@@ -1605,9 +1598,10 @@ static void scsi_request_fn(struct request_queue *q)
spin_lock_irq(q->queue_lock);
blk_requeue_request(q, req);
sdev->device_busy--;
- if(sdev->device_busy == 0)
- blk_plug_device(q);
- out:
+out_delay:
+ if (sdev->device_busy == 0)
+ blk_delay_queue(q, SCSI_QUEUE_DELAY);
+out:
/* must be careful here...if we trigger the ->remove() function
* we cannot be holding the q lock */
spin_unlock_irq(q->queue_lock);
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
index 5c3ccfc6b62..2941d2d92c9 100644
--- a/drivers/scsi/scsi_transport_fc.c
+++ b/drivers/scsi/scsi_transport_fc.c
@@ -3913,7 +3913,7 @@ fc_bsg_request_handler(struct request_queue *q, struct Scsi_Host *shost,
if (!get_device(dev))
return;
- while (!blk_queue_plugged(q)) {
+ while (1) {
if (rport && (rport->port_state == FC_PORTSTATE_BLOCKED) &&
!(rport->flags & FC_RPORT_FAST_FAIL_TIMEDOUT))
break;
diff --git a/drivers/scsi/scsi_transport_sas.c b/drivers/scsi/scsi_transport_sas.c
index 927e99cb722..c6fcf76cade 100644
--- a/drivers/scsi/scsi_transport_sas.c
+++ b/drivers/scsi/scsi_transport_sas.c
@@ -173,11 +173,7 @@ static void sas_smp_request(struct request_queue *q, struct Scsi_Host *shost,
int ret;
int (*handler)(struct Scsi_Host *, struct sas_rphy *, struct request *);
- while (!blk_queue_plugged(q)) {
- req = blk_fetch_request(q);
- if (!req)
- break;
-
+ while ((req = blk_fetch_request(q)) != NULL) {
spin_unlock_irq(q->queue_lock);
handler = to_sas_internal(shost->transportt)->f->smp_handler;
diff --git a/drivers/staging/hv/blkvsc_drv.c b/drivers/staging/hv/blkvsc_drv.c
index 6e02f1b0c46..af789937be4 100644
--- a/drivers/staging/hv/blkvsc_drv.c
+++ b/drivers/staging/hv/blkvsc_drv.c
@@ -124,7 +124,8 @@ static void blkvsc_shutdown(struct device *device);
static int blkvsc_open(struct block_device *bdev, fmode_t mode);
static int blkvsc_release(struct gendisk *disk, fmode_t mode);
-static int blkvsc_media_changed(struct gendisk *gd);
+static unsigned int blkvsc_check_events(struct gendisk *gd,
+ unsigned int clearing);
static int blkvsc_revalidate_disk(struct gendisk *gd);
static int blkvsc_getgeo(struct block_device *bd, struct hd_geometry *hg);
static int blkvsc_ioctl(struct block_device *bd, fmode_t mode,
@@ -155,7 +156,7 @@ static const struct block_device_operations block_ops = {
.owner = THIS_MODULE,
.open = blkvsc_open,
.release = blkvsc_release,
- .media_changed = blkvsc_media_changed,
+ .check_events = blkvsc_check_events,
.revalidate_disk = blkvsc_revalidate_disk,
.getgeo = blkvsc_getgeo,
.ioctl = blkvsc_ioctl,
@@ -357,6 +358,7 @@ static int blkvsc_probe(struct device *device)
else
blkdev->gd->first_minor = 0;
blkdev->gd->fops = &block_ops;
+ blkdev->gd->events = DISK_EVENT_MEDIA_CHANGE;
blkdev->gd->private_data = blkdev;
blkdev->gd->driverfs_dev = &(blkdev->device_ctx->device);
sprintf(blkdev->gd->disk_name, "hd%c", 'a' + devnum);
@@ -1337,10 +1339,11 @@ static int blkvsc_release(struct gendisk *disk, fmode_t mode)
return 0;
}
-static int blkvsc_media_changed(struct gendisk *gd)
+static unsigned int blkvsc_check_events(struct gendisk *gd,
+ unsigned int clearing)
{
DPRINT_DBG(BLKVSC_DRV, "- enter\n");
- return 1;
+ return DISK_EVENT_MEDIA_CHANGE;
}
static int blkvsc_revalidate_disk(struct gendisk *gd)
diff --git a/drivers/staging/westbridge/astoria/block/cyasblkdev_block.c b/drivers/staging/westbridge/astoria/block/cyasblkdev_block.c
index e1851f00be5..842cd9214a5 100644
--- a/drivers/staging/westbridge/astoria/block/cyasblkdev_block.c
+++ b/drivers/staging/westbridge/astoria/block/cyasblkdev_block.c
@@ -381,10 +381,10 @@ static int cyasblkdev_blk_ioctl(
return -ENOTTY;
}
-/* Media_changed block_device opp
+/* check_events block_device opp
* this one is called by kernel to confirm if the media really changed
* as we indicated by issuing check_disk_change() call */
-int cyasblkdev_media_changed(struct gendisk *gd)
+unsigned int cyasblkdev_check_events(struct gendisk *gd, unsigned int clearing)
{
struct cyasblkdev_blk_data *bd;
@@ -402,7 +402,7 @@ int cyasblkdev_media_changed(struct gendisk *gd)
#endif
}
- /* return media change state "1" yes, 0 no */
+ /* return media change state - DISK_EVENT_MEDIA_CHANGE yes, 0 no */
return 0;
}
@@ -432,7 +432,7 @@ static struct block_device_operations cyasblkdev_bdops = {
.ioctl = cyasblkdev_blk_ioctl,
/* .getgeo = cyasblkdev_blk_getgeo, */
/* added to support media removal( real and simulated) media */
- .media_changed = cyasblkdev_media_changed,
+ .check_events = cyasblkdev_check_events,
/* added to support media removal( real and simulated) media */
.revalidate_disk = cyasblkdev_revalidate_disk,
.owner = THIS_MODULE,
@@ -1090,6 +1090,7 @@ static int cyasblkdev_add_disks(int bus_num,
bd->user_disk_0->first_minor = devidx << CYASBLKDEV_SHIFT;
bd->user_disk_0->minors = 8;
bd->user_disk_0->fops = &cyasblkdev_bdops;
+ bd->user_disk_0->events = DISK_EVENT_MEDIA_CHANGE;
bd->user_disk_0->private_data = bd;
bd->user_disk_0->queue = bd->queue.queue;
bd->dbgprn_flags = DBGPRN_RD_RQ;
@@ -1190,6 +1191,7 @@ static int cyasblkdev_add_disks(int bus_num,
bd->user_disk_1->first_minor = (devidx + 1) << CYASBLKDEV_SHIFT;
bd->user_disk_1->minors = 8;
bd->user_disk_1->fops = &cyasblkdev_bdops;
+ bd->user_disk_0->events = DISK_EVENT_MEDIA_CHANGE;
bd->user_disk_1->private_data = bd;
bd->user_disk_1->queue = bd->queue.queue;
bd->dbgprn_flags = DBGPRN_RD_RQ;
@@ -1278,6 +1280,7 @@ static int cyasblkdev_add_disks(int bus_num,
(devidx + 2) << CYASBLKDEV_SHIFT;
bd->system_disk->minors = 8;
bd->system_disk->fops = &cyasblkdev_bdops;
+ bd->system_disk->events = DISK_EVENT_MEDIA_CHANGE;
bd->system_disk->private_data = bd;
bd->system_disk->queue = bd->queue.queue;
/* don't search for vfat
diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c
index 3df570db0e4..eb0afec046e 100644
--- a/drivers/target/target_core_iblock.c
+++ b/drivers/target/target_core_iblock.c
@@ -391,9 +391,8 @@ static int iblock_do_task(struct se_task *task)
{
struct se_device *dev = task->task_se_cmd->se_dev;
struct iblock_req *req = IBLOCK_REQ(task);
- struct iblock_dev *ibd = (struct iblock_dev *)req->ib_dev;
- struct request_queue *q = bdev_get_queue(ibd->ibd_bd);
struct bio *bio = req->ib_bio, *nbio = NULL;
+ struct blk_plug plug;
int rw;
if (task->task_data_direction == DMA_TO_DEVICE) {
@@ -411,6 +410,7 @@ static int iblock_do_task(struct se_task *task)
rw = READ;
}
+ blk_start_plug(&plug);
while (bio) {
nbio = bio->bi_next;
bio->bi_next = NULL;
@@ -420,9 +420,8 @@ static int iblock_do_task(struct se_task *task)
submit_bio(rw, bio);
bio = nbio;
}
+ blk_finish_plug(&plug);
- if (q->unplug_fn)
- q->unplug_fn(q);
return PYX_TRANSPORT_SENT_TO_TRANSPORT;
}