diff options
author | Jens Axboe <axboe@fb.com> | 2017-02-17 14:08:19 -0700 |
---|---|---|
committer | Jens Axboe <axboe@fb.com> | 2017-02-17 14:08:19 -0700 |
commit | 818551e2b2c662a1b26de6b4f7d6b8411a838d18 (patch) | |
tree | f38b4c951df4d33db81ae7b7765a56bce491c2a8 /drivers/md | |
parent | 6010720da8aab51f33beee63b73cf88016e9b250 (diff) | |
parent | 7520872c0cf4d3df6d74242c6edfb9e70a47df4d (diff) |
Merge branch 'for-4.11/next' into for-4.11/linus-merge
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/md')
-rw-r--r-- | drivers/md/bcache/request.c | 10 | ||||
-rw-r--r-- | drivers/md/bcache/super.c | 8 | ||||
-rw-r--r-- | drivers/md/dm-cache-target.c | 2 | ||||
-rw-r--r-- | drivers/md/dm-core.h | 1 | ||||
-rw-r--r-- | drivers/md/dm-era-target.c | 2 | ||||
-rw-r--r-- | drivers/md/dm-mpath.c | 132 | ||||
-rw-r--r-- | drivers/md/dm-rq.c | 268 | ||||
-rw-r--r-- | drivers/md/dm-rq.h | 2 | ||||
-rw-r--r-- | drivers/md/dm-table.c | 2 | ||||
-rw-r--r-- | drivers/md/dm-target.c | 7 | ||||
-rw-r--r-- | drivers/md/dm-thin.c | 2 | ||||
-rw-r--r-- | drivers/md/dm.c | 49 | ||||
-rw-r--r-- | drivers/md/dm.h | 3 | ||||
-rw-r--r-- | drivers/md/linear.c | 2 | ||||
-rw-r--r-- | drivers/md/md.c | 6 | ||||
-rw-r--r-- | drivers/md/multipath.c | 2 | ||||
-rw-r--r-- | drivers/md/raid0.c | 6 | ||||
-rw-r--r-- | drivers/md/raid1.c | 11 | ||||
-rw-r--r-- | drivers/md/raid10.c | 10 | ||||
-rw-r--r-- | drivers/md/raid5.c | 12 |
20 files changed, 133 insertions, 404 deletions
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c index 01035e718c1c..709c9cc34369 100644 --- a/drivers/md/bcache/request.c +++ b/drivers/md/bcache/request.c @@ -1009,7 +1009,7 @@ static int cached_dev_congested(void *data, int bits) struct request_queue *q = bdev_get_queue(dc->bdev); int ret = 0; - if (bdi_congested(&q->backing_dev_info, bits)) + if (bdi_congested(q->backing_dev_info, bits)) return 1; if (cached_dev_get(dc)) { @@ -1018,7 +1018,7 @@ static int cached_dev_congested(void *data, int bits) for_each_cache(ca, d->c, i) { q = bdev_get_queue(ca->bdev); - ret |= bdi_congested(&q->backing_dev_info, bits); + ret |= bdi_congested(q->backing_dev_info, bits); } cached_dev_put(dc); @@ -1032,7 +1032,7 @@ void bch_cached_dev_request_init(struct cached_dev *dc) struct gendisk *g = dc->disk.disk; g->queue->make_request_fn = cached_dev_make_request; - g->queue->backing_dev_info.congested_fn = cached_dev_congested; + g->queue->backing_dev_info->congested_fn = cached_dev_congested; dc->disk.cache_miss = cached_dev_cache_miss; dc->disk.ioctl = cached_dev_ioctl; } @@ -1125,7 +1125,7 @@ static int flash_dev_congested(void *data, int bits) for_each_cache(ca, d->c, i) { q = bdev_get_queue(ca->bdev); - ret |= bdi_congested(&q->backing_dev_info, bits); + ret |= bdi_congested(q->backing_dev_info, bits); } return ret; @@ -1136,7 +1136,7 @@ void bch_flash_dev_request_init(struct bcache_device *d) struct gendisk *g = d->disk; g->queue->make_request_fn = flash_dev_make_request; - g->queue->backing_dev_info.congested_fn = flash_dev_congested; + g->queue->backing_dev_info->congested_fn = flash_dev_congested; d->cache_miss = flash_dev_cache_miss; d->ioctl = flash_dev_ioctl; } diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index 3a19cbc8b230..85e3f21c2514 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -807,7 +807,7 @@ static int bcache_device_init(struct bcache_device *d, unsigned block_size, blk_queue_make_request(q, NULL); d->disk->queue = q; q->queuedata = d; - q->backing_dev_info.congested_data = d; + q->backing_dev_info->congested_data = d; q->limits.max_hw_sectors = UINT_MAX; q->limits.max_sectors = UINT_MAX; q->limits.max_segment_size = UINT_MAX; @@ -1132,9 +1132,9 @@ static int cached_dev_init(struct cached_dev *dc, unsigned block_size) set_capacity(dc->disk.disk, dc->bdev->bd_part->nr_sects - dc->sb.data_offset); - dc->disk.disk->queue->backing_dev_info.ra_pages = - max(dc->disk.disk->queue->backing_dev_info.ra_pages, - q->backing_dev_info.ra_pages); + dc->disk.disk->queue->backing_dev_info->ra_pages = + max(dc->disk.disk->queue->backing_dev_info->ra_pages, + q->backing_dev_info->ra_pages); bch_cached_dev_request_init(dc); bch_cached_dev_writeback_init(dc); diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c index 5b9cf56de8ef..894bc14469c8 100644 --- a/drivers/md/dm-cache-target.c +++ b/drivers/md/dm-cache-target.c @@ -2284,7 +2284,7 @@ static void do_waker(struct work_struct *ws) static int is_congested(struct dm_dev *dev, int bdi_bits) { struct request_queue *q = bdev_get_queue(dev->bdev); - return bdi_congested(&q->backing_dev_info, bdi_bits); + return bdi_congested(q->backing_dev_info, bdi_bits); } static int cache_is_congested(struct dm_target_callbacks *cb, int bdi_bits) diff --git a/drivers/md/dm-core.h b/drivers/md/dm-core.h index 40ceba1fe8be..136fda3ff9e5 100644 --- a/drivers/md/dm-core.h +++ b/drivers/md/dm-core.h @@ -92,7 +92,6 @@ struct mapped_device { * io objects are allocated from here. */ mempool_t *io_pool; - mempool_t *rq_pool; struct bio_set *bs; diff --git a/drivers/md/dm-era-target.c b/drivers/md/dm-era-target.c index bf2b2676cb8a..9fab33b113c4 100644 --- a/drivers/md/dm-era-target.c +++ b/drivers/md/dm-era-target.c @@ -1379,7 +1379,7 @@ static void stop_worker(struct era *era) static int dev_is_congested(struct dm_dev *dev, int bdi_bits) { struct request_queue *q = bdev_get_queue(dev->bdev); - return bdi_congested(&q->backing_dev_info, bdi_bits); + return bdi_congested(q->backing_dev_info, bdi_bits); } static int era_is_congested(struct dm_target_callbacks *cb, int bdi_bits) diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c index 3570bcb7a4a4..7f223dbed49f 100644 --- a/drivers/md/dm-mpath.c +++ b/drivers/md/dm-mpath.c @@ -92,12 +92,6 @@ struct multipath { unsigned queue_mode; - /* - * We must use a mempool of dm_mpath_io structs so that we - * can resubmit bios on error. - */ - mempool_t *mpio_pool; - struct mutex work_mutex; struct work_struct trigger_event; @@ -115,8 +109,6 @@ struct dm_mpath_io { typedef int (*action_fn) (struct pgpath *pgpath); -static struct kmem_cache *_mpio_cache; - static struct workqueue_struct *kmultipathd, *kmpath_handlerd; static void trigger_event(struct work_struct *work); static void activate_path(struct work_struct *work); @@ -209,7 +201,6 @@ static struct multipath *alloc_multipath(struct dm_target *ti) init_waitqueue_head(&m->pg_init_wait); mutex_init(&m->work_mutex); - m->mpio_pool = NULL; m->queue_mode = DM_TYPE_NONE; m->ti = ti; @@ -229,16 +220,7 @@ static int alloc_multipath_stage2(struct dm_target *ti, struct multipath *m) m->queue_mode = DM_TYPE_MQ_REQUEST_BASED; else m->queue_mode = DM_TYPE_REQUEST_BASED; - } - - if (m->queue_mode == DM_TYPE_REQUEST_BASED) { - unsigned min_ios = dm_get_reserved_rq_based_ios(); - - m->mpio_pool = mempool_create_slab_pool(min_ios, _mpio_cache); - if (!m->mpio_pool) - return -ENOMEM; - } - else if (m->queue_mode == DM_TYPE_BIO_BASED) { + } else if (m->queue_mode == DM_TYPE_BIO_BASED) { INIT_WORK(&m->process_queued_bios, process_queued_bios); /* * bio-based doesn't support any direct scsi_dh management; @@ -263,7 +245,6 @@ static void free_multipath(struct multipath *m) kfree(m->hw_handler_name); kfree(m->hw_handler_params); - mempool_destroy(m->mpio_pool); kfree(m); } @@ -272,38 +253,6 @@ static struct dm_mpath_io *get_mpio(union map_info *info) return info->ptr; } -static struct dm_mpath_io *set_mpio(struct multipath *m, union map_info *info) -{ - struct dm_mpath_io *mpio; - - if (!m->mpio_pool) { - /* Use blk-mq pdu memory requested via per_io_data_size */ - mpio = get_mpio(info); - memset(mpio, 0, sizeof(*mpio)); - return mpio; - } - - mpio = mempool_alloc(m->mpio_pool, GFP_ATOMIC); - if (!mpio) - return NULL; - - memset(mpio, 0, sizeof(*mpio)); - info->ptr = mpio; - - return mpio; -} - -static void clear_request_fn_mpio(struct multipath *m, union map_info *info) -{ - /* Only needed for non blk-mq (.request_fn) multipath */ - if (m->mpio_pool) { - struct dm_mpath_io *mpio = info->ptr; - - info->ptr = NULL; - mempool_free(mpio, m->mpio_pool); - } -} - static size_t multipath_per_bio_data_size(void) { return sizeof(struct dm_mpath_io) + sizeof(struct dm_bio_details); @@ -530,16 +479,17 @@ static bool must_push_back_bio(struct multipath *m) /* * Map cloned requests (request-based multipath) */ -static int __multipath_map(struct dm_target *ti, struct request *clone, - union map_info *map_context, - struct request *rq, struct request **__clone) +static int multipath_clone_and_map(struct dm_target *ti, struct request *rq, + union map_info *map_context, + struct request **__clone) { struct multipath *m = ti->private; int r = DM_MAPIO_REQUEUE; - size_t nr_bytes = clone ? blk_rq_bytes(clone) : blk_rq_bytes(rq); + size_t nr_bytes = blk_rq_bytes(rq); struct pgpath *pgpath; struct block_device *bdev; - struct dm_mpath_io *mpio; + struct dm_mpath_io *mpio = get_mpio(map_context); + struct request *clone; /* Do we need to select a new pgpath? */ pgpath = lockless_dereference(m->current_pgpath); @@ -556,42 +506,23 @@ static int __multipath_map(struct dm_target *ti, struct request *clone, return r; } - mpio = set_mpio(m, map_context); - if (!mpio) - /* ENOMEM, requeue */ - return r; - + memset(mpio, 0, sizeof(*mpio)); mpio->pgpath = pgpath; mpio->nr_bytes = nr_bytes; bdev = pgpath->path.dev->bdev; - if (clone) { - /* - * Old request-based interface: allocated clone is passed in. - * Used by: .request_fn stacked on .request_fn path(s). - */ - clone->q = bdev_get_queue(bdev); - clone->rq_disk = bdev->bd_disk; - clone->cmd_flags |= REQ_FAILFAST_TRANSPORT; - } else { - /* - * blk-mq request-based interface; used by both: - * .request_fn stacked on blk-mq path(s) and - * blk-mq stacked on blk-mq path(s). - */ - clone = blk_mq_alloc_request(bdev_get_queue(bdev), - rq_data_dir(rq), BLK_MQ_REQ_NOWAIT); - if (IS_ERR(clone)) { - /* EBUSY, ENODEV or EWOULDBLOCK: requeue */ - clear_request_fn_mpio(m, map_context); - return r; - } - clone->bio = clone->biotail = NULL; - clone->rq_disk = bdev->bd_disk; - clone->cmd_flags |= REQ_FAILFAST_TRANSPORT; - *__clone = clone; + clone = blk_get_request(bdev_get_queue(bdev), + rq->cmd_flags | REQ_NOMERGE, + GFP_ATOMIC); + if (IS_ERR(clone)) { + /* EBUSY, ENODEV or EWOULDBLOCK: requeue */ + return r; } + clone->bio = clone->biotail = NULL; + clone->rq_disk = bdev->bd_disk; + clone->cmd_flags |= REQ_FAILFAST_TRANSPORT; + *__clone = clone; if (pgpath->pg->ps.type->start_io) pgpath->pg->ps.type->start_io(&pgpath->pg->ps, @@ -600,22 +531,9 @@ static int __multipath_map(struct dm_target *ti, struct request *clone, return DM_MAPIO_REMAPPED; } -static int multipath_map(struct dm_target *ti, struct request *clone, - union map_info *map_context) -{ - return __multipath_map(ti, clone, map_context, NULL, NULL); -} - -static int multipath_clone_and_map(struct dm_target *ti, struct request *rq, - union map_info *map_context, - struct request **clone) -{ - return __multipath_map(ti, NULL, map_context, rq, clone); -} - static void multipath_release_clone(struct request *clone) { - blk_mq_free_request(clone); + blk_put_request(clone); } /* @@ -1187,7 +1105,7 @@ static int multipath_ctr(struct dm_target *ti, unsigned argc, char **argv) ti->num_write_same_bios = 1; if (m->queue_mode == DM_TYPE_BIO_BASED) ti->per_io_data_size = multipath_per_bio_data_size(); - else if (m->queue_mode == DM_TYPE_MQ_REQUEST_BASED) + else ti->per_io_data_size = sizeof(struct dm_mpath_io); return 0; @@ -1610,7 +1528,6 @@ static int multipath_end_io(struct dm_target *ti, struct request *clone, if (ps->type->end_io) ps->type->end_io(ps, &pgpath->path, mpio->nr_bytes); } - clear_request_fn_mpio(m, map_context); return r; } @@ -2060,7 +1977,6 @@ static struct target_type multipath_target = { .module = THIS_MODULE, .ctr = multipath_ctr, .dtr = multipath_dtr, - .map_rq = multipath_map, .clone_and_map_rq = multipath_clone_and_map, .release_clone_rq = multipath_release_clone, .rq_end_io = multipath_end_io, @@ -2080,11 +1996,6 @@ static int __init dm_multipath_init(void) { int r; - /* allocate a slab for the dm_mpath_ios */ - _mpio_cache = KMEM_CACHE(dm_mpath_io, 0); - if (!_mpio_cache) - return -ENOMEM; - r = dm_register_target(&multipath_target); if (r < 0) { DMERR("request-based register failed %d", r); @@ -2120,8 +2031,6 @@ bad_alloc_kmpath_handlerd: bad_alloc_kmultipathd: dm_unregister_target(&multipath_target); bad_register_target: - kmem_cache_destroy(_mpio_cache); - return r; } @@ -2131,7 +2040,6 @@ static void __exit dm_multipath_exit(void) destroy_workqueue(kmultipathd); dm_unregister_target(&multipath_target); - kmem_cache_destroy(_mpio_cache); } module_init(dm_multipath_init); diff --git a/drivers/md/dm-rq.c b/drivers/md/dm-rq.c index 6e702fc69a83..67d76f21fecd 100644 --- a/drivers/md/dm-rq.c +++ b/drivers/md/dm-rq.c @@ -109,28 +109,6 @@ void dm_stop_queue(struct request_queue *q) dm_mq_stop_queue(q); } -static struct dm_rq_target_io *alloc_old_rq_tio(struct mapped_device *md, - gfp_t gfp_mask) -{ - return mempool_alloc(md->io_pool, gfp_mask); -} - -static void free_old_rq_tio(struct dm_rq_target_io *tio) -{ - mempool_free(tio, tio->md->io_pool); -} - -static struct request *alloc_old_clone_request(struct mapped_device *md, - gfp_t gfp_mask) -{ - return mempool_alloc(md->rq_pool, gfp_mask); -} - -static void free_old_clone_request(struct mapped_device *md, struct request *rq) -{ - mempool_free(rq, md->rq_pool); -} - /* * Partial completion handling for request-based dm */ @@ -185,7 +163,7 @@ static void end_clone_bio(struct bio *clone) static struct dm_rq_target_io *tio_from_request(struct request *rq) { - return (rq->q->mq_ops ? blk_mq_rq_to_pdu(rq) : rq->special); + return blk_mq_rq_to_pdu(rq); } static void rq_end_stats(struct mapped_device *md, struct request *orig) @@ -233,31 +211,6 @@ static void rq_completed(struct mapped_device *md, int rw, bool run_queue) dm_put(md); } -static void free_rq_clone(struct request *clone) -{ - struct dm_rq_target_io *tio = clone->end_io_data; - struct mapped_device *md = tio->md; - - blk_rq_unprep_clone(clone); - - /* - * It is possible for a clone_old_rq() allocated clone to - * get passed in -- it may not yet have a request_queue. - * This is known to occur if the error target replaces - * a multipath target that has a request_fn queue stacked - * on blk-mq queue(s). - */ - if (clone->q && clone->q->mq_ops) - /* stacked on blk-mq queue(s) */ - tio->ti->type->release_clone_rq(clone); - else if (!md->queue->mq_ops) - /* request_fn queue stacked on request_fn queue(s) */ - free_old_clone_request(md, clone); - - if (!md->queue->mq_ops) - free_old_rq_tio(tio); -} - /* * Complete the clone and the original request. * Must be called without clone's queue lock held, @@ -270,20 +223,9 @@ static void dm_end_request(struct request *clone, int error) struct mapped_device *md = tio->md; struct request *rq = tio->orig; - if (rq->cmd_type == REQ_TYPE_BLOCK_PC) { - rq->errors = clone->errors; - rq->resid_len = clone->resid_len; - - if (rq->sense) - /* - * We are using the sense buffer of the original - * request. - * So setting the length of the sense data is enough. - */ - rq->sense_len = clone->sense_len; - } + blk_rq_unprep_clone(clone); + tio->ti->type->release_clone_rq(clone); - free_rq_clone(clone); rq_end_stats(md, rq); if (!rq->q->mq_ops) blk_end_request_all(rq, error); @@ -292,22 +234,6 @@ static void dm_end_request(struct request *clone, int error) rq_completed(md, rw, true); } -static void dm_unprep_request(struct request *rq) -{ - struct dm_rq_target_io *tio = tio_from_request(rq); - struct request *clone = tio->clone; - - if (!rq->q->mq_ops) { - rq->special = NULL; - rq->rq_flags &= ~RQF_DONTPREP; - } - - if (clone) - free_rq_clone(clone); - else if (!tio->md->queue->mq_ops) - free_old_rq_tio(tio); -} - /* * Requeue the original request of a clone. */ @@ -346,7 +272,10 @@ static void dm_requeue_original_request(struct dm_rq_target_io *tio, bool delay_ int rw = rq_data_dir(rq); rq_end_stats(md, rq); - dm_unprep_request(rq); + if (tio->clone) { + blk_rq_unprep_clone(tio->clone); + tio->ti->type->release_clone_rq(tio->clone); + } if (!rq->q->mq_ops) dm_old_requeue_request(rq); @@ -401,14 +330,11 @@ static void dm_softirq_done(struct request *rq) if (!clone) { rq_end_stats(tio->md, rq); rw = rq_data_dir(rq); - if (!rq->q->mq_ops) { + if (!rq->q->mq_ops) blk_end_request_all(rq, tio->error); - rq_completed(tio->md, rw, false); - free_old_rq_tio(tio); - } else { + else blk_mq_end_request(rq, tio->error); - rq_completed(tio->md, rw, false); - } + rq_completed(tio->md, rw, false); return; } @@ -452,16 +378,6 @@ static void end_clone_request(struct request *clone, int error) { struct dm_rq_target_io *tio = clone->end_io_data; - if (!clone->q->mq_ops) { - /* - * For just cleaning up the information of the queue in which - * the clone was dispatched. - * The clone is *NOT* freed actually here because it is alloced - * from dm own mempool (RQF_ALLOCED isn't set). - */ - __blk_put_request(clone->q, clone); - } - /* * Actual request completion is done in a softirq context which doesn't * hold the clone's queue lock. Otherwise, deadlock could occur because: @@ -511,9 +427,6 @@ static int setup_clone(struct request *clone, struct request *rq, if (r) return r; - clone->cmd = rq->cmd; - clone->cmd_len = rq->cmd_len; - clone->sense = rq->sense; clone->end_io = end_clone_request; clone->end_io_data = tio; @@ -522,28 +435,6 @@ static int setup_clone(struct request *clone, struct request *rq, return 0; } -static struct request *clone_old_rq(struct request *rq, struct mapped_device *md, - struct dm_rq_target_io *tio, gfp_t gfp_mask) -{ - /* - * Create clone for use with .request_fn request_queue - */ - struct request *clone; - - clone = alloc_old_clone_request(md, gfp_mask); - if (!clone) - return NULL; - - blk_rq_init(NULL, clone); - if (setup_clone(clone, rq, tio, gfp_mask)) { - /* -ENOMEM */ - free_old_clone_request(md, clone); - return NULL; - } - - return clone; -} - static void map_tio_request(struct kthread_work *work); static void init_tio(struct dm_rq_target_io *tio, struct request *rq, @@ -565,60 +456,6 @@ static void init_tio(struct dm_rq_target_io *tio, struct request *rq, kthread_init_work(&tio->work, map_tio_request); } -static struct dm_rq_target_io *dm_old_prep_tio(struct request *rq, - struct mapped_device *md, - gfp_t gfp_mask) -{ - struct dm_rq_target_io *tio; - int srcu_idx; - struct dm_table *table; - - tio = alloc_old_rq_tio(md, gfp_mask); - if (!tio) - return NULL; - - init_tio(tio, rq, md); - - table = dm_get_live_table(md, &srcu_idx); - /* - * Must clone a request if this .request_fn DM device - * is stacked on .request_fn device(s). - */ - if (!dm_table_all_blk_mq_devices(table)) { - if (!clone_old_rq(rq, md, tio, gfp_mask)) { - dm_put_live_table(md, srcu_idx); - free_old_rq_tio(tio); - return NULL; - } - } - dm_put_live_table(md, srcu_idx); - - return tio; -} - -/* - * Called with the queue lock held. - */ -static int dm_old_prep_fn(struct request_queue *q, struct request *rq) -{ - struct mapped_device *md = q->queuedata; - struct dm_rq_target_io *tio; - - if (unlikely(rq->special)) { - DMWARN("Already has something in rq->special."); - return BLKPREP_KILL; - } - - tio = dm_old_prep_tio(rq, md, GFP_ATOMIC); - if (!tio) - return BLKPREP_DEFER; - - rq->special = tio; - rq->rq_flags |= RQF_DONTPREP; - - return BLKPREP_OK; -} - /* * Returns: * DM_MAPIO_* : the request has been processed as indicated @@ -633,31 +470,18 @@ static int map_request(struct dm_rq_target_io *tio) struct request *rq = tio->orig; struct request *clone = NULL; - if (tio->clone) { - clone = tio->clone; - r = ti->type->map_rq(ti, clone, &tio->info); - if (r == DM_MAPIO_DELAY_REQUEUE) - return DM_MAPIO_REQUEUE; /* .request_fn requeue is always immediate */ - } else { - r = ti->type->clone_and_map_rq(ti, rq, &tio->info, &clone); - if (r < 0) { - /* The target wants to complete the I/O */ - dm_kill_unmapped_request(rq, r); - return r; - } - if (r == DM_MAPIO_REMAPPED && - setup_clone(clone, rq, tio, GFP_ATOMIC)) { - /* -ENOMEM */ - ti->type->release_clone_rq(clone); - return DM_MAPIO_REQUEUE; - } - } - + r = ti->type->clone_and_map_rq(ti, rq, &tio->info, &clone); switch (r) { case DM_MAPIO_SUBMITTED: /* The target has taken the I/O to submit by itself later */ break; case DM_MAPIO_REMAPPED: + if (setup_clone(clone, rq, tio, GFP_ATOMIC)) { + /* -ENOMEM */ + ti->type->release_clone_rq(clone); + return DM_MAPIO_REQUEUE; + } + /* The target has remapped the I/O so dispatch it */ trace_block_rq_remap(clone->q, clone, disk_devt(dm_disk(md)), blk_rq_pos(rq)); @@ -716,6 +540,29 @@ static void dm_start_request(struct mapped_device *md, struct request *orig) dm_get(md); } +static int __dm_rq_init_rq(struct mapped_device *md, struct request *rq) +{ + struct dm_rq_target_io *tio = blk_mq_rq_to_pdu(rq); + + /* + * Must initialize md member of tio, otherwise it won't + * be available in dm_mq_queue_rq. + */ + tio->md = md; + + if (md->init_tio_pdu) { + /* target-specific per-io data is immediately after the tio */ + tio->info.ptr = tio + 1; + } + + return 0; +} + +static int dm_rq_init_rq(struct request_queue *q, struct request *rq, gfp_t gfp) +{ + return __dm_rq_init_rq(q->rq_alloc_data, rq); +} + static void map_tio_request(struct kthread_work *work) { struct dm_rq_target_io *tio = container_of(work, struct dm_rq_target_io, work); @@ -814,6 +661,7 @@ static void dm_old_request_fn(struct request_queue *q) dm_start_request(md, rq); tio = tio_from_request(rq); + init_tio(tio, rq, md); /* Establish tio->ti before queuing work (map_tio_request) */ tio->ti = ti; kthread_queue_work(&md->kworker, &tio->work); @@ -824,10 +672,23 @@ static void dm_old_request_fn(struct request_queue *q) /* * Fully initialize a .request_fn request-based queue. */ -int dm_old_init_request_queue(struct mapped_device *md) +int dm_old_init_request_queue(struct mapped_device *md, struct dm_table *t) { + struct dm_target *immutable_tgt; + /* Fully initialize the queue */ - if (!blk_init_allocated_queue(md->queue, dm_old_request_fn, NULL)) + md->queue->cmd_size = sizeof(struct dm_rq_target_io); + md->queue->rq_alloc_data = md; + md->queue->request_fn = dm_old_request_fn; + md->queue->init_rq_fn = dm_rq_init_rq; + + immutable_tgt = dm_table_get_immutable_target(t); + if (immutable_tgt && immutable_tgt->per_io_data_size) { + /* any target-specific per-io data is immediately after the tio */ + md->queue->cmd_size += immutable_tgt->per_io_data_size; + md->init_tio_pdu = true; + } + if (blk_init_allocated_queue(md->queue) < 0) return -EINVAL; /* disable dm_old_request_fn's merge heuristic by default */ @@ -835,7 +696,6 @@ int dm_old_init_request_queue(struct mapped_device *md) dm_init_normal_md_queue(md); blk_queue_softirq_done(md->queue, dm_softirq_done); - blk_queue_prep_rq(md->queue, dm_old_prep_fn); /* Initialize the request-based DM worker thread */ kthread_init_worker(&md->kworker); @@ -856,21 +716,7 @@ static int dm_mq_init_request(void *data, struct request *rq, unsigned int hctx_idx, unsigned int request_idx, unsigned int numa_node) { - struct mapped_device *md = data; - struct dm_rq_target_io *tio = blk_mq_rq_to_pdu(rq); - - /* - * Must initialize md member of tio, otherwise it won't - * be available in dm_mq_queue_rq. - */ - tio->md = md; - - if (md->init_tio_pdu) { - /* target-specific per-io data is immediately after the tio */ - tio->info.ptr = tio + 1; - } - - return 0; + return __dm_rq_init_rq(data, rq); } static int dm_mq_queue_rq(struct blk_mq_hw_ctx *hctx, diff --git a/drivers/md/dm-rq.h b/drivers/md/dm-rq.h index 4da06cae7bad..f0020d21b95f 100644 --- a/drivers/md/dm-rq.h +++ b/drivers/md/dm-rq.h @@ -48,7 +48,7 @@ struct dm_rq_clone_bio_info { bool dm_use_blk_mq_default(void); bool dm_use_blk_mq(struct mapped_device *md); -int dm_old_init_request_queue(struct mapped_device *md); +int dm_old_init_request_queue(struct mapped_device *md, struct dm_table *t); int dm_mq_init_request_queue(struct mapped_device *md, struct dm_table *t); void dm_mq_cleanup_mapped_device(struct mapped_device *md); diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 0a427de23ed2..3ad16d9c9d5a 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -1750,7 +1750,7 @@ int dm_table_any_congested(struct dm_table *t, int bdi_bits) char b[BDEVNAME_SIZE]; if (likely(q)) - r |= bdi_congested(&q->backing_dev_info, bdi_bits); + r |= bdi_congested(q->backing_dev_info, bdi_bits); else DMWARN_LIMIT("%s: any_congested: nonexistent device %s", dm_device_name(t->md), diff --git a/drivers/md/dm-target.c b/drivers/md/dm-target.c index 710ae28fd618..43d3445b121d 100644 --- a/drivers/md/dm-target.c +++ b/drivers/md/dm-target.c @@ -131,12 +131,6 @@ static int io_err_map(struct dm_target *tt, struct bio *bio) return -EIO; } -static int io_err_map_rq(struct dm_target *ti, struct request *clone, - union map_info *map_context) -{ - return -EIO; -} - static int io_err_clone_and_map_rq(struct dm_target *ti, struct request *rq, union map_info *map_context, struct request **clone) @@ -161,7 +155,6 @@ static struct target_type error_target = { .ctr = io_err_ctr, .dtr = io_err_dtr, .map = io_err_map, - .map_rq = io_err_map_rq, .clone_and_map_rq = io_err_clone_and_map_rq, .release_clone_rq = io_err_release_clone_rq, .direct_access = io_err_direct_access, diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index 110982db4b48..2b266a2b5035 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -2711,7 +2711,7 @@ static int pool_is_congested(struct dm_target_callbacks *cb, int bdi_bits) return 1; q = bdev_get_queue(pt->data_dev->bdev); - return bdi_congested(&q->backing_dev_info, bdi_bits); + return bdi_congested(q->backing_dev_info, bdi_bits); } static void requeue_bios(struct pool *pool) diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 3086da5664f3..5bd9ab06a562 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -91,7 +91,6 @@ static int dm_numa_node = DM_NUMA_NODE; */ struct dm_md_mempools { mempool_t *io_pool; - mempool_t *rq_pool; struct bio_set *bs; }; @@ -466,13 +465,16 @@ static int dm_blk_ioctl(struct block_device *bdev, fmode_t mode, if (r > 0) { /* - * Target determined this ioctl is being issued against - * a logical partition of the parent bdev; so extra - * validation is needed. + * Target determined this ioctl is being issued against a + * subset of the parent bdev; require extra privileges. */ - r = scsi_verify_blk_ioctl(NULL, cmd); - if (r) + if (!capable(CAP_SYS_RAWIO)) { + DMWARN_LIMIT( + "%s: sending ioctl %x to DM device without required privilege.", + current->comm, cmd); + r = -ENOIOCTLCMD; goto out; + } } r = __blkdev_driver_ioctl(bdev, mode, cmd, arg); @@ -1314,7 +1316,7 @@ static int dm_any_congested(void *congested_data, int bdi_bits) * With request-based DM we only need to check the * top-level queue for congestion. */ - r = md->queue->backing_dev_info.wb.state & bdi_bits; + r = md->queue->backing_dev_info->wb.state & bdi_bits; } else { map = dm_get_live_table_fast(md); if (map) @@ -1397,7 +1399,7 @@ void dm_init_md_queue(struct mapped_device *md) * - must do so here (in alloc_dev callchain) before queue is used */ md->queue->queuedata = md; - md->queue->backing_dev_info.congested_data = md; + md->queue->backing_dev_info->congested_data = md; } void dm_init_normal_md_queue(struct mapped_device *md) @@ -1408,7 +1410,7 @@ void dm_init_normal_md_queue(struct mapped_device *md) /* * Initialize aspects of queue that aren't relevant for blk-mq */ - md->queue->backing_dev_info.congested_fn = dm_any_congested; + md->queue->backing_dev_info->congested_fn = dm_any_congested; blk_queue_bounce_limit(md->queue, BLK_BOUNCE_ANY); } @@ -1419,7 +1421,6 @@ static void cleanup_mapped_device(struct mapped_device *md) if (md->kworker_task) kthread_stop(md->kworker_task); mempool_destroy(md->io_pool); - mempool_destroy(md->rq_pool); if (md->bs) bioset_free(md->bs); @@ -1595,12 +1596,10 @@ static void __bind_mempools(struct mapped_device *md, struct dm_table *t) goto out; } - BUG_ON(!p || md->io_pool || md->rq_pool || md->bs); + BUG_ON(!p || md->io_pool || md->bs); md->io_pool = p->io_pool; p->io_pool = NULL; - md->rq_pool = p->rq_pool; - p->rq_pool = NULL; md->bs = p->bs; p->bs = NULL; @@ -1777,7 +1776,7 @@ int dm_setup_md_queue(struct mapped_device *md, struct dm_table *t) switch (type) { case DM_TYPE_REQUEST_BASED: - r = dm_old_init_request_queue(md); + r = dm_old_init_request_queue(md, t); if (r) { DMERR("Cannot initialize queue for request-based mapped device"); return r; @@ -2493,7 +2492,6 @@ struct dm_md_mempools *dm_alloc_md_mempools(struct mapped_device *md, unsigned t unsigned integrity, unsigned per_io_data_size) { struct dm_md_mempools *pools = kzalloc_node(sizeof(*pools), GFP_KERNEL, md->numa_node_id); - struct kmem_cache *cachep = NULL; unsigned int pool_size = 0; unsigned int front_pad; @@ -2503,20 +2501,16 @@ struct dm_md_mempools *dm_alloc_md_mempools(struct mapped_device *md, unsigned t switch (type) { case DM_TYPE_BIO_BASED: case DM_TYPE_DAX_BIO_BASED: - cachep = _io_cache; pool_size = dm_get_reserved_bio_based_ios(); front_pad = roundup(per_io_data_size, __alignof__(struct dm_target_io)) + offsetof(struct dm_target_io, clone); + + pools->io_pool = mempool_create_slab_pool(pool_size, _io_cache); + if (!pools->io_pool) + goto out; break; case DM_TYPE_REQUEST_BASED: - cachep = _rq_tio_cache; - pool_size = dm_get_reserved_rq_based_ios(); - pools->rq_pool = mempool_create_slab_pool(pool_size, _rq_cache); - if (!pools->rq_pool) - goto out; - /* fall through to setup remaining rq-based pools */ case DM_TYPE_MQ_REQUEST_BASED: - if (!pool_size) - pool_size = dm_get_reserved_rq_based_ios(); + pool_size = dm_get_reserved_rq_based_ios(); front_pad = offsetof(struct dm_rq_clone_bio_info, clone); /* per_io_data_size is used for blk-mq pdu at queue allocation */ break; @@ -2524,12 +2518,6 @@ struct dm_md_mempools *dm_alloc_md_mempools(struct mapped_device *md, unsigned t BUG(); } - if (cachep) { - pools->io_pool = mempool_create_slab_pool(pool_size, cachep); - if (!pools->io_pool) - goto out; - } - pools->bs = bioset_create_nobvec(pool_size, front_pad); if (!pools->bs) goto out; @@ -2551,7 +2539,6 @@ void dm_free_md_mempools(struct dm_md_mempools *pools) return; mempool_destroy(pools->io_pool); - mempool_destroy(pools->rq_pool); if (pools->bs) bioset_free(pools->bs); diff --git a/drivers/md/dm.h b/drivers/md/dm.h index f0aad08b9654..f298b01f7ab3 100644 --- a/drivers/md/dm.h +++ b/drivers/md/dm.h @@ -95,8 +95,7 @@ int dm_setup_md_queue(struct mapped_device *md, struct dm_table *t); /* * To check whether the target type is request-based or not (bio-based). */ -#define dm_target_request_based(t) (((t)->type->map_rq != NULL) || \ - ((t)->type->clone_and_map_rq != NULL)) +#define dm_target_request_based(t) ((t)->type->clone_and_map_rq != NULL) /* * To check whether the target type is a hybrid (capable of being diff --git a/drivers/md/linear.c b/drivers/md/linear.c index 5975c9915684..f1c7bbac31a5 100644 --- a/drivers/md/linear.c +++ b/drivers/md/linear.c @@ -62,7 +62,7 @@ static int linear_congested(struct mddev *mddev, int bits) for (i = 0; i < mddev->raid_disks && !ret ; i++) { struct request_queue *q = bdev_get_queue(conf->disks[i].rdev->bdev); - ret |= bdi_congested(&q->backing_dev_info, bits); + ret |= bdi_congested(q->backing_dev_info, bits); } return ret; diff --git a/drivers/md/md.c b/drivers/md/md.c index 01175dac0db6..ba485dcf1064 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -5346,8 +5346,8 @@ int md_run(struct mddev *mddev) queue_flag_set_unlocked(QUEUE_FLAG_NONROT, mddev->queue); else queue_flag_clear_unlocked(QUEUE_FLAG_NONROT, mddev->queue); - mddev->queue->backing_dev_info.congested_data = mddev; - mddev->queue->backing_dev_info.congested_fn = md_congested; + mddev->queue->backing_dev_info->congested_data = mddev; + mddev->queue->backing_dev_info->congested_fn = md_congested; } if (pers->sync_request) { if (mddev->kobj.sd && @@ -5704,7 +5704,7 @@ static int do_md_stop(struct mddev *mddev, int mode, __md_stop_writes(mddev); __md_stop(mddev); - mddev->queue->backing_dev_info.congested_fn = NULL; + mddev->queue->backing_dev_info->congested_fn = NULL; /* tell userspace to handle 'inactive' */ sysfs_notify_dirent_safe(mddev->sysfs_state); diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c index aa8c4e5c1ee2..d457afa672d5 100644 --- a/drivers/md/multipath.c +++ b/drivers/md/multipath.c @@ -169,7 +169,7 @@ static int multipath_congested(struct mddev *mddev, int bits) if (rdev && !test_bit(Faulty, &rdev->flags)) { struct request_queue *q = bdev_get_queue(rdev->bdev); - ret |= bdi_congested(&q->backing_dev_info, bits); + ret |= bdi_congested(q->backing_dev_info, bits); /* Just like multipath_map, we just check the * first available device */ diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index 848365d474f3..d6585239bff2 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c @@ -41,7 +41,7 @@ static int raid0_congested(struct mddev *mddev, int bits) for (i = 0; i < raid_disks && !ret ; i++) { struct request_queue *q = bdev_get_queue(devlist[i]->bdev); - ret |= bdi_congested(&q->backing_dev_info, bits); + ret |= bdi_congested(q->backing_dev_info, bits); } return ret; } @@ -420,8 +420,8 @@ static int raid0_run(struct mddev *mddev) */ int stripe = mddev->raid_disks * (mddev->chunk_sectors << 9) / PAGE_SIZE; - if (mddev->queue->backing_dev_info.ra_pages < 2* stripe) - mddev->queue->backing_dev_info.ra_pages = 2* stripe; + if (mddev->queue->backing_dev_info->ra_pages < 2* stripe) + mddev->queue->backing_dev_info->ra_pages = 2* stripe; } dump_zones(mddev); diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 7b0f647bcccb..830ff2b20346 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -744,9 +744,9 @@ static int raid1_congested(struct mddev *mddev, int bits) * non-congested targets, it can be removed */ if ((bits & (1 << WB_async_congested)) || 1) - ret |= bdi_congested(&q->backing_dev_info, bits); + ret |= bdi_congested(q->backing_dev_info, bits); else - ret &= bdi_congested(&q->backing_dev_info, bits); + ret &= bdi_congested(q->backing_dev_info, bits); } } rcu_read_unlock(); @@ -1170,10 +1170,6 @@ static void raid1_write_request(struct mddev *mddev, struct bio *bio, int i, disks; struct bitmap *bitmap = mddev->bitmap; unsigned long flags; - const int op = bio_op(bio); - const unsigned long do_sync = (bio->bi_opf & REQ_SYNC); - const unsigned long do_flush_fua = (bio->bi_opf & - (REQ_PREFLUSH | REQ_FUA)); struct md_rdev *blocked_rdev; struct blk_plug_cb *cb; struct raid1_plug_cb *plug = NULL; @@ -1389,7 +1385,8 @@ static void raid1_write_request(struct mddev *mddev, struct bio *bio, conf->mirrors[i].rdev->data_offset); mbio->bi_bdev = conf->mirrors[i].rdev->bdev; mbio->bi_end_io = raid1_end_write_request; - bio_set_op_attrs(mbio, op, do_flush_fua | do_sync); + mbio->bi_opf = bio_op(bio) | + (bio->bi_opf & (REQ_SYNC | REQ_PREFLUSH | REQ_FUA)); if (test_bit(FailFast, &conf->mirrors[i].rdev->flags) && !test_bit(WriteMostly, &conf->mirrors[i].rdev->flags) && conf->raid_disks - mddev->degraded > 1) diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 1920756828df..6bc5c2a85160 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -860,7 +860,7 @@ static int raid10_congested(struct mddev *mddev, int bits) if (rdev && !test_bit(Faulty, &rdev->flags)) { struct request_queue *q = bdev_get_queue(rdev->bdev); - ret |= bdi_congested(&q->backing_dev_info, bits); + ret |= bdi_congested(q->backing_dev_info, bits); } } rcu_read_unlock(); @@ -3841,8 +3841,8 @@ static int raid10_run(struct mddev *mddev) * maybe... */ stripe /= conf->geo.near_copies; - if (mddev->queue->backing_dev_info.ra_pages < 2 * stripe) - mddev->queue->backing_dev_info.ra_pages = 2 * stripe; + if (mddev->queue->backing_dev_info->ra_pages < 2 * stripe) + mddev->queue->backing_dev_info->ra_pages = 2 * stripe; } if (md_integrity_register(mddev)) @@ -4643,8 +4643,8 @@ static void end_reshape(struct r10conf *conf) int stripe = conf->geo.raid_disks * ((conf->mddev->chunk_sectors << 9) / PAGE_SIZE); stripe /= conf->geo.near_copies; - if (conf->mddev->queue->backing_dev_info.ra_pages < 2 * stripe) - conf->mddev->queue->backing_dev_info.ra_pages = 2 * stripe; + if (conf->mddev->queue->backing_dev_info->ra_pages < 2 * stripe) + conf->mddev->queue->backing_dev_info->ra_pages = 2 * stripe; } conf->fullsync = 0; } diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 3c7e106c12a2..6214e699342c 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -6331,10 +6331,10 @@ raid5_store_skip_copy(struct mddev *mddev, const char *page, size_t len) mddev_suspend(mddev); conf->skip_copy = new; if (new) - mddev->queue->backing_dev_info.capabilities |= + mddev->queue->backing_dev_info->capabilities |= BDI_CAP_STABLE_WRITES; else - mddev->queue->backing_dev_info.capabilities &= + mddev->queue->backing_dev_info->capabilities &= ~BDI_CAP_STABLE_WRITES; mddev_resume(mddev); } @@ -7153,8 +7153,8 @@ static int raid5_run(struct mddev *mddev) int data_disks = conf->previous_raid_disks - conf->max_degraded; int stripe = data_disks * ((mddev->chunk_sectors << 9) / PAGE_SIZE); - if (mddev->queue->backing_dev_info.ra_pages < 2 * stripe) - mddev->queue->backing_dev_info.ra_pages = 2 * stripe; + if (mddev->queue->backing_dev_info->ra_pages < 2 * stripe) + mddev->queue->backing_dev_info->ra_pages = 2 * stripe; chunk_size = mddev->chunk_sectors << 9; blk_queue_io_min(mddev->queue, chunk_size); @@ -7763,8 +7763,8 @@ static void end_reshape(struct r5conf *conf) int data_disks = conf->raid_disks - conf->max_degraded; int stripe = data_disks * ((conf->chunk_sectors << 9) / PAGE_SIZE); - if (conf->mddev->queue->backing_dev_info.ra_pages < 2 * stripe) - conf->mddev->queue->backing_dev_info.ra_pages = 2 * stripe; + if (conf->mddev->queue->backing_dev_info->ra_pages < 2 * stripe) + conf->mddev->queue->backing_dev_info->ra_pages = 2 * stripe; } } } |