diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-03-04 13:02:45 -0600 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-03-04 13:02:45 -0600 |
commit | 776e49e8ddb5169e6477fd33a396e9c7b2eb7400 (patch) | |
tree | 4ea27a06d1c11a5c1e4350ad8dac16b95f56e691 /drivers/md | |
parent | 8b614cb8f1dcac8ca77cf4dd85f46ef3055f8238 (diff) | |
parent | 636be4241bdd88fec273b38723e44bad4e1c4fae (diff) | |
download | linux-776e49e8ddb5169e6477fd33a396e9c7b2eb7400.tar.bz2 |
Merge tag 'for-5.6/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fixes from Mike Snitzer:
- Fix request-based DM's congestion_fn and actually wire it up to the
bdi.
- Extend dm-bio-record to track additional struct bio members needed by
DM integrity target.
- Fix DM core to properly advertise that a device is suspended during
unload (between the presuspend and postsuspend hooks). This change is
a prereq for related DM integrity and DM writecache fixes. It
elevates DM integrity's 'suspending' state tracking to DM core.
- Four stable fixes for DM integrity target.
- Fix crash in DM cache target due to incorrect work item cancelling.
- Fix DM thin metadata lockdep warning that was introduced during 5.6
merge window.
- Fix DM zoned target's chunk work refcounting that regressed during
recent conversion to refcount_t.
- Bump the minor version for DM core and all target versions that have
seen interface changes or important fixes during the 5.6 cycle.
* tag 'for-5.6/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm: bump version of core and various targets
dm: fix congested_fn for request-based device
dm integrity: use dm_bio_record and dm_bio_restore
dm bio record: save/restore bi_end_io and bi_integrity
dm zoned: Fix reference counter initial value of chunk works
dm writecache: verify watermark during resume
dm: report suspended device during destroy
dm thin metadata: fix lockdep complaint
dm cache: fix a crash due to incorrect work item cancelling
dm integrity: fix invalid table returned due to argument count mismatch
dm integrity: fix a deadlock due to offloading to an incorrect workqueue
dm integrity: fix recalculation when moving from journal mode to bitmap mode
Diffstat (limited to 'drivers/md')
-rw-r--r-- | drivers/md/dm-bio-record.h | 15 | ||||
-rw-r--r-- | drivers/md/dm-cache-target.c | 6 | ||||
-rw-r--r-- | drivers/md/dm-integrity.c | 84 | ||||
-rw-r--r-- | drivers/md/dm-mpath.c | 2 | ||||
-rw-r--r-- | drivers/md/dm-thin-metadata.c | 2 | ||||
-rw-r--r-- | drivers/md/dm-verity-target.c | 2 | ||||
-rw-r--r-- | drivers/md/dm-writecache.c | 16 | ||||
-rw-r--r-- | drivers/md/dm-zoned-target.c | 10 | ||||
-rw-r--r-- | drivers/md/dm.c | 22 |
9 files changed, 92 insertions, 67 deletions
diff --git a/drivers/md/dm-bio-record.h b/drivers/md/dm-bio-record.h index c82578af56a5..2ea0360108e1 100644 --- a/drivers/md/dm-bio-record.h +++ b/drivers/md/dm-bio-record.h @@ -20,8 +20,13 @@ struct dm_bio_details { struct gendisk *bi_disk; u8 bi_partno; + int __bi_remaining; unsigned long bi_flags; struct bvec_iter bi_iter; + bio_end_io_t *bi_end_io; +#if defined(CONFIG_BLK_DEV_INTEGRITY) + struct bio_integrity_payload *bi_integrity; +#endif }; static inline void dm_bio_record(struct dm_bio_details *bd, struct bio *bio) @@ -30,6 +35,11 @@ static inline void dm_bio_record(struct dm_bio_details *bd, struct bio *bio) bd->bi_partno = bio->bi_partno; bd->bi_flags = bio->bi_flags; bd->bi_iter = bio->bi_iter; + bd->__bi_remaining = atomic_read(&bio->__bi_remaining); + bd->bi_end_io = bio->bi_end_io; +#if defined(CONFIG_BLK_DEV_INTEGRITY) + bd->bi_integrity = bio_integrity(bio); +#endif } static inline void dm_bio_restore(struct dm_bio_details *bd, struct bio *bio) @@ -38,6 +48,11 @@ static inline void dm_bio_restore(struct dm_bio_details *bd, struct bio *bio) bio->bi_partno = bd->bi_partno; bio->bi_flags = bd->bi_flags; bio->bi_iter = bd->bi_iter; + atomic_set(&bio->__bi_remaining, bd->__bi_remaining); + bio->bi_end_io = bd->bi_end_io; +#if defined(CONFIG_BLK_DEV_INTEGRITY) + bio->bi_integrity = bd->bi_integrity; +#endif } #endif diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c index 2d32821b3a5b..d3bb355819a4 100644 --- a/drivers/md/dm-cache-target.c +++ b/drivers/md/dm-cache-target.c @@ -2846,8 +2846,8 @@ static void cache_postsuspend(struct dm_target *ti) prevent_background_work(cache); BUG_ON(atomic_read(&cache->nr_io_migrations)); - cancel_delayed_work(&cache->waker); - flush_workqueue(cache->wq); + cancel_delayed_work_sync(&cache->waker); + drain_workqueue(cache->wq); WARN_ON(cache->tracker.in_flight); /* @@ -3492,7 +3492,7 @@ static void cache_io_hints(struct dm_target *ti, struct queue_limits *limits) static struct target_type cache_target = { .name = "cache", - .version = {2, 1, 0}, + .version = {2, 2, 0}, .module = THIS_MODULE, .ctr = cache_ctr, .dtr = cache_dtr, diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c index b225b3e445fa..2f03fecd312d 100644 --- a/drivers/md/dm-integrity.c +++ b/drivers/md/dm-integrity.c @@ -6,6 +6,8 @@ * This file is released under the GPL. */ +#include "dm-bio-record.h" + #include <linux/compiler.h> #include <linux/module.h> #include <linux/device-mapper.h> @@ -201,17 +203,19 @@ struct dm_integrity_c { __u8 log2_blocks_per_bitmap_bit; unsigned char mode; - int suspending; int failed; struct crypto_shash *internal_hash; + struct dm_target *ti; + /* these variables are locked with endio_wait.lock */ struct rb_root in_progress; struct list_head wait_list; wait_queue_head_t endio_wait; struct workqueue_struct *wait_wq; + struct workqueue_struct *offload_wq; unsigned char commit_seq; commit_id_t commit_ids[N_COMMIT_IDS]; @@ -293,11 +297,7 @@ struct dm_integrity_io { struct completion *completion; - struct gendisk *orig_bi_disk; - u8 orig_bi_partno; - bio_end_io_t *orig_bi_end_io; - struct bio_integrity_payload *orig_bi_integrity; - struct bvec_iter orig_bi_iter; + struct dm_bio_details bio_details; }; struct journal_completion { @@ -1439,7 +1439,7 @@ static void dec_in_flight(struct dm_integrity_io *dio) dio->range.logical_sector += dio->range.n_sectors; bio_advance(bio, dio->range.n_sectors << SECTOR_SHIFT); INIT_WORK(&dio->work, integrity_bio_wait); - queue_work(ic->wait_wq, &dio->work); + queue_work(ic->offload_wq, &dio->work); return; } do_endio_flush(ic, dio); @@ -1450,14 +1450,9 @@ static void integrity_end_io(struct bio *bio) { struct dm_integrity_io *dio = dm_per_bio_data(bio, sizeof(struct dm_integrity_io)); - bio->bi_iter = dio->orig_bi_iter; - bio->bi_disk = dio->orig_bi_disk; - bio->bi_partno = dio->orig_bi_partno; - if (dio->orig_bi_integrity) { - bio->bi_integrity = dio->orig_bi_integrity; + dm_bio_restore(&dio->bio_details, bio); + if (bio->bi_integrity) bio->bi_opf |= REQ_INTEGRITY; - } - bio->bi_end_io = dio->orig_bi_end_io; if (dio->completion) complete(dio->completion); @@ -1542,7 +1537,7 @@ static void integrity_metadata(struct work_struct *w) } } - __bio_for_each_segment(bv, bio, iter, dio->orig_bi_iter) { + __bio_for_each_segment(bv, bio, iter, dio->bio_details.bi_iter) { unsigned pos; char *mem, *checksums_ptr; @@ -1586,7 +1581,7 @@ again: if (likely(checksums != checksums_onstack)) kfree(checksums); } else { - struct bio_integrity_payload *bip = dio->orig_bi_integrity; + struct bio_integrity_payload *bip = dio->bio_details.bi_integrity; if (bip) { struct bio_vec biv; @@ -1865,7 +1860,7 @@ static void dm_integrity_map_continue(struct dm_integrity_io *dio, bool from_map if (need_sync_io && from_map) { INIT_WORK(&dio->work, integrity_bio_wait); - queue_work(ic->metadata_wq, &dio->work); + queue_work(ic->offload_wq, &dio->work); return; } @@ -2005,20 +2000,13 @@ offload_to_thread: } else dio->completion = NULL; - dio->orig_bi_iter = bio->bi_iter; - - dio->orig_bi_disk = bio->bi_disk; - dio->orig_bi_partno = bio->bi_partno; + dm_bio_record(&dio->bio_details, bio); bio_set_dev(bio, ic->dev->bdev); - - dio->orig_bi_integrity = bio_integrity(bio); bio->bi_integrity = NULL; bio->bi_opf &= ~REQ_INTEGRITY; - - dio->orig_bi_end_io = bio->bi_end_io; bio->bi_end_io = integrity_end_io; - bio->bi_iter.bi_size = dio->range.n_sectors << SECTOR_SHIFT; + generic_make_request(bio); if (need_sync_io) { @@ -2315,7 +2303,7 @@ static void integrity_writer(struct work_struct *w) unsigned prev_free_sectors; /* the following test is not needed, but it tests the replay code */ - if (READ_ONCE(ic->suspending) && !ic->meta_dev) + if (unlikely(dm_suspended(ic->ti)) && !ic->meta_dev) return; spin_lock_irq(&ic->endio_wait.lock); @@ -2376,7 +2364,7 @@ static void integrity_recalc(struct work_struct *w) next_chunk: - if (unlikely(READ_ONCE(ic->suspending))) + if (unlikely(dm_suspended(ic->ti))) goto unlock_ret; range.logical_sector = le64_to_cpu(ic->sb->recalc_sector); @@ -2501,7 +2489,7 @@ static void bitmap_block_work(struct work_struct *w) dio->range.n_sectors, BITMAP_OP_TEST_ALL_SET)) { remove_range(ic, &dio->range); INIT_WORK(&dio->work, integrity_bio_wait); - queue_work(ic->wait_wq, &dio->work); + queue_work(ic->offload_wq, &dio->work); } else { block_bitmap_op(ic, ic->journal, dio->range.logical_sector, dio->range.n_sectors, BITMAP_OP_SET); @@ -2524,7 +2512,7 @@ static void bitmap_block_work(struct work_struct *w) remove_range(ic, &dio->range); INIT_WORK(&dio->work, integrity_bio_wait); - queue_work(ic->wait_wq, &dio->work); + queue_work(ic->offload_wq, &dio->work); } queue_delayed_work(ic->commit_wq, &ic->bitmap_flush_work, ic->bitmap_flush_interval); @@ -2804,8 +2792,6 @@ static void dm_integrity_postsuspend(struct dm_target *ti) del_timer_sync(&ic->autocommit_timer); - WRITE_ONCE(ic->suspending, 1); - if (ic->recalc_wq) drain_workqueue(ic->recalc_wq); @@ -2834,8 +2820,6 @@ static void dm_integrity_postsuspend(struct dm_target *ti) #endif } - WRITE_ONCE(ic->suspending, 0); - BUG_ON(!RB_EMPTY_ROOT(&ic->in_progress)); ic->journal_uptodate = true; @@ -2888,17 +2872,24 @@ static void dm_integrity_resume(struct dm_target *ti) } else { replay_journal(ic); if (ic->mode == 'B') { - int mode; ic->sb->flags |= cpu_to_le32(SB_FLAG_DIRTY_BITMAP); ic->sb->log2_blocks_per_bitmap_bit = ic->log2_blocks_per_bitmap_bit; r = sync_rw_sb(ic, REQ_OP_WRITE, REQ_FUA); if (unlikely(r)) dm_integrity_io_error(ic, "writing superblock", r); - mode = ic->recalculate_flag ? BITMAP_OP_SET : BITMAP_OP_CLEAR; - block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors, mode); - block_bitmap_op(ic, ic->recalc_bitmap, 0, ic->provided_data_sectors, mode); - block_bitmap_op(ic, ic->may_write_bitmap, 0, ic->provided_data_sectors, mode); + block_bitmap_op(ic, ic->journal, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR); + block_bitmap_op(ic, ic->recalc_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR); + block_bitmap_op(ic, ic->may_write_bitmap, 0, ic->provided_data_sectors, BITMAP_OP_CLEAR); + if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING) && + le64_to_cpu(ic->sb->recalc_sector) < ic->provided_data_sectors) { + block_bitmap_op(ic, ic->journal, le64_to_cpu(ic->sb->recalc_sector), + ic->provided_data_sectors - le64_to_cpu(ic->sb->recalc_sector), BITMAP_OP_SET); + block_bitmap_op(ic, ic->recalc_bitmap, le64_to_cpu(ic->sb->recalc_sector), + ic->provided_data_sectors - le64_to_cpu(ic->sb->recalc_sector), BITMAP_OP_SET); + block_bitmap_op(ic, ic->may_write_bitmap, le64_to_cpu(ic->sb->recalc_sector), + ic->provided_data_sectors - le64_to_cpu(ic->sb->recalc_sector), BITMAP_OP_SET); + } rw_journal_sectors(ic, REQ_OP_WRITE, REQ_FUA | REQ_SYNC, 0, ic->n_bitmap_blocks * (BITMAP_BLOCK_SIZE >> SECTOR_SHIFT), NULL); } @@ -2967,7 +2958,7 @@ static void dm_integrity_status(struct dm_target *ti, status_type_t type, DMEMIT(" meta_device:%s", ic->meta_dev->name); if (ic->sectors_per_block != 1) DMEMIT(" block_size:%u", ic->sectors_per_block << SECTOR_SHIFT); - if (ic->recalculate_flag) + if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) DMEMIT(" recalculate"); DMEMIT(" journal_sectors:%u", ic->initial_sectors - SB_SECTORS); DMEMIT(" interleave_sectors:%u", 1U << ic->sb->log2_interleave_sectors); @@ -3623,6 +3614,7 @@ static int dm_integrity_ctr(struct dm_target *ti, unsigned argc, char **argv) } ti->private = ic; ti->per_io_data_size = sizeof(struct dm_integrity_io); + ic->ti = ti; ic->in_progress = RB_ROOT; INIT_LIST_HEAD(&ic->wait_list); @@ -3836,6 +3828,14 @@ static int dm_integrity_ctr(struct dm_target *ti, unsigned argc, char **argv) goto bad; } + ic->offload_wq = alloc_workqueue("dm-integrity-offload", WQ_MEM_RECLAIM, + METADATA_WORKQUEUE_MAX_ACTIVE); + if (!ic->offload_wq) { + ti->error = "Cannot allocate workqueue"; + r = -ENOMEM; + goto bad; + } + ic->commit_wq = alloc_workqueue("dm-integrity-commit", WQ_MEM_RECLAIM, 1); if (!ic->commit_wq) { ti->error = "Cannot allocate workqueue"; @@ -4140,6 +4140,8 @@ static void dm_integrity_dtr(struct dm_target *ti) destroy_workqueue(ic->metadata_wq); if (ic->wait_wq) destroy_workqueue(ic->wait_wq); + if (ic->offload_wq) + destroy_workqueue(ic->offload_wq); if (ic->commit_wq) destroy_workqueue(ic->commit_wq); if (ic->writer_wq) @@ -4200,7 +4202,7 @@ static void dm_integrity_dtr(struct dm_target *ti) static struct target_type integrity_target = { .name = "integrity", - .version = {1, 4, 0}, + .version = {1, 5, 0}, .module = THIS_MODULE, .features = DM_TARGET_SINGLETON | DM_TARGET_INTEGRITY, .ctr = dm_integrity_ctr, diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c index 2bc18c9c3abc..58fd137b6ae1 100644 --- a/drivers/md/dm-mpath.c +++ b/drivers/md/dm-mpath.c @@ -2053,7 +2053,7 @@ static int multipath_busy(struct dm_target *ti) *---------------------------------------------------------------*/ static struct target_type multipath_target = { .name = "multipath", - .version = {1, 13, 0}, + .version = {1, 14, 0}, .features = DM_TARGET_SINGLETON | DM_TARGET_IMMUTABLE | DM_TARGET_PASSES_INTEGRITY, .module = THIS_MODULE, diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c index fc9947d6210c..76b6b323bf4b 100644 --- a/drivers/md/dm-thin-metadata.c +++ b/drivers/md/dm-thin-metadata.c @@ -960,9 +960,9 @@ int dm_pool_metadata_close(struct dm_pool_metadata *pmd) DMWARN("%s: __commit_transaction() failed, error = %d", __func__, r); } + pmd_write_unlock(pmd); if (!pmd->fail_io) __destroy_persistent_data_objects(pmd); - pmd_write_unlock(pmd); kfree(pmd); return 0; diff --git a/drivers/md/dm-verity-target.c b/drivers/md/dm-verity-target.c index 0d61e9c67986..eec9f252e935 100644 --- a/drivers/md/dm-verity-target.c +++ b/drivers/md/dm-verity-target.c @@ -1221,7 +1221,7 @@ bad: static struct target_type verity_target = { .name = "verity", - .version = {1, 5, 0}, + .version = {1, 6, 0}, .module = THIS_MODULE, .ctr = verity_ctr, .dtr = verity_dtr, diff --git a/drivers/md/dm-writecache.c b/drivers/md/dm-writecache.c index b9e27e37a943..a09bdc000e64 100644 --- a/drivers/md/dm-writecache.c +++ b/drivers/md/dm-writecache.c @@ -625,6 +625,12 @@ static void writecache_add_to_freelist(struct dm_writecache *wc, struct wc_entry wc->freelist_size++; } +static inline void writecache_verify_watermark(struct dm_writecache *wc) +{ + if (unlikely(wc->freelist_size + wc->writeback_size <= wc->freelist_high_watermark)) + queue_work(wc->writeback_wq, &wc->writeback_work); +} + static struct wc_entry *writecache_pop_from_freelist(struct dm_writecache *wc, sector_t expected_sector) { struct wc_entry *e; @@ -650,8 +656,8 @@ static struct wc_entry *writecache_pop_from_freelist(struct dm_writecache *wc, s list_del(&e->lru); } wc->freelist_size--; - if (unlikely(wc->freelist_size + wc->writeback_size <= wc->freelist_high_watermark)) - queue_work(wc->writeback_wq, &wc->writeback_work); + + writecache_verify_watermark(wc); return e; } @@ -842,7 +848,7 @@ static void writecache_suspend(struct dm_target *ti) } wc_unlock(wc); - flush_workqueue(wc->writeback_wq); + drain_workqueue(wc->writeback_wq); wc_lock(wc); if (flush_on_suspend) @@ -965,6 +971,8 @@ erase_this: writecache_commit_flushed(wc, false); } + writecache_verify_watermark(wc); + wc_unlock(wc); } @@ -2312,7 +2320,7 @@ static void writecache_status(struct dm_target *ti, status_type_t type, static struct target_type writecache_target = { .name = "writecache", - .version = {1, 1, 1}, + .version = {1, 2, 0}, .module = THIS_MODULE, .ctr = writecache_ctr, .dtr = writecache_dtr, diff --git a/drivers/md/dm-zoned-target.c b/drivers/md/dm-zoned-target.c index 70a1063161c0..f4f83d39b3dc 100644 --- a/drivers/md/dm-zoned-target.c +++ b/drivers/md/dm-zoned-target.c @@ -533,8 +533,9 @@ static int dmz_queue_chunk_work(struct dmz_target *dmz, struct bio *bio) /* Get the BIO chunk work. If one is not active yet, create one */ cw = radix_tree_lookup(&dmz->chunk_rxtree, chunk); - if (!cw) { - + if (cw) { + dmz_get_chunk_work(cw); + } else { /* Create a new chunk work */ cw = kmalloc(sizeof(struct dm_chunk_work), GFP_NOIO); if (unlikely(!cw)) { @@ -543,7 +544,7 @@ static int dmz_queue_chunk_work(struct dmz_target *dmz, struct bio *bio) } INIT_WORK(&cw->work, dmz_chunk_work); - refcount_set(&cw->refcount, 0); + refcount_set(&cw->refcount, 1); cw->target = dmz; cw->chunk = chunk; bio_list_init(&cw->bio_list); @@ -556,7 +557,6 @@ static int dmz_queue_chunk_work(struct dmz_target *dmz, struct bio *bio) } bio_list_add(&cw->bio_list, bio); - dmz_get_chunk_work(cw); dmz_reclaim_bio_acc(dmz->reclaim); if (queue_work(dmz->chunk_wq, &cw->work)) @@ -967,7 +967,7 @@ static int dmz_iterate_devices(struct dm_target *ti, static struct target_type dmz_type = { .name = "zoned", - .version = {1, 0, 0}, + .version = {1, 1, 0}, .features = DM_TARGET_SINGLETON | DM_TARGET_ZONED_HM, .module = THIS_MODULE, .ctr = dmz_ctr, diff --git a/drivers/md/dm.c b/drivers/md/dm.c index b89f07ee2eff..0413018c8305 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1788,7 +1788,8 @@ 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; + struct backing_dev_info *bdi = md->queue->backing_dev_info; + r = bdi->wb.congested->state & bdi_bits; } else { map = dm_get_live_table_fast(md); if (map) @@ -1854,15 +1855,6 @@ static const struct dax_operations dm_dax_ops; static void dm_wq_work(struct work_struct *work); -static 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_data = md; - md->queue->backing_dev_info->congested_fn = dm_any_congested; -} - static void cleanup_mapped_device(struct mapped_device *md) { if (md->wq) @@ -2249,6 +2241,12 @@ struct queue_limits *dm_get_queue_limits(struct mapped_device *md) } EXPORT_SYMBOL_GPL(dm_get_queue_limits); +static void dm_init_congested_fn(struct mapped_device *md) +{ + md->queue->backing_dev_info->congested_data = md; + md->queue->backing_dev_info->congested_fn = dm_any_congested; +} + /* * Setup the DM device's queue based on md's type */ @@ -2265,11 +2263,12 @@ int dm_setup_md_queue(struct mapped_device *md, struct dm_table *t) DMERR("Cannot initialize queue for request-based dm-mq mapped device"); return r; } + dm_init_congested_fn(md); break; case DM_TYPE_BIO_BASED: case DM_TYPE_DAX_BIO_BASED: case DM_TYPE_NVME_BIO_BASED: - dm_init_normal_md_queue(md); + dm_init_congested_fn(md); break; case DM_TYPE_NONE: WARN_ON_ONCE(true); @@ -2368,6 +2367,7 @@ static void __dm_destroy(struct mapped_device *md, bool wait) map = dm_get_live_table(md, &srcu_idx); if (!dm_suspended_md(md)) { dm_table_presuspend_targets(map); + set_bit(DMF_SUSPENDED, &md->flags); dm_table_postsuspend_targets(map); } /* dm_put_live_table must be before msleep, otherwise deadlock is possible */ |