diff options
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/cciss.c | 6 | ||||
| -rw-r--r-- | drivers/block/cpqarray.c | 3 | ||||
| -rw-r--r-- | drivers/block/drbd/drbd_actlog.c | 4 | ||||
| -rw-r--r-- | drivers/block/drbd/drbd_bitmap.c | 1 | ||||
| -rw-r--r-- | drivers/block/drbd/drbd_int.h | 16 | ||||
| -rw-r--r-- | drivers/block/drbd/drbd_main.c | 36 | ||||
| -rw-r--r-- | drivers/block/drbd/drbd_receiver.c | 29 | ||||
| -rw-r--r-- | drivers/block/drbd/drbd_req.c | 4 | ||||
| -rw-r--r-- | drivers/block/drbd/drbd_worker.c | 1 | ||||
| -rw-r--r-- | drivers/block/drbd/drbd_wrappers.h | 18 | ||||
| -rw-r--r-- | drivers/block/floppy.c | 1 | ||||
| -rw-r--r-- | drivers/block/loop.c | 13 | ||||
| -rw-r--r-- | drivers/block/pktcdvd.c | 2 | ||||
| -rw-r--r-- | drivers/block/umem.c | 16 |
14 files changed, 7 insertions, 143 deletions
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index 9279272b3732..35658f445fca 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 946dad4caef3..b2fceb53e809 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 ba95cba192be..aca302492ff2 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 fd42832f785b..0645ca829a94 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 3803a0348937..b0bd27dfc1e8 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 29cd0dc9fe4f..8a43ce0edeed 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 24487d4fb202..8e68be939deb 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 11a75d32a2e2..ad3fc6228f27 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 34f224b018b3..e027446590d3 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 defdb5013ea3..53586fa5ae1b 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 3851dbc03e05..301d7a9a41a6 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -3838,7 +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); diff --git a/drivers/block/loop.c b/drivers/block/loop.c index 79c3079a6203..a076a14ca72d 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); diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c index a077db27b7c9..07a382eaf0a8 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"); diff --git a/drivers/block/umem.c b/drivers/block/umem.c index 9b102abe209c..031ca720d926 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; @@ -897,7 +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); |
