Lines Matching refs:tc
223 typedef void (*process_bio_fn)(struct thin_c *tc, struct bio *bio);
224 typedef void (*process_cell_fn)(struct thin_c *tc, struct dm_bio_prison_cell *cell);
381 struct thin_c *tc; member
387 static void begin_discard(struct discard_op *op, struct thin_c *tc, struct bio *parent) in begin_discard() argument
391 op->tc = tc; in begin_discard()
399 struct thin_c *tc = op->tc; in issue_discard() local
400 sector_t s = block_to_sectors(tc->pool, data_b); in issue_discard()
401 sector_t len = block_to_sectors(tc->pool, data_e - data_b); in issue_discard()
403 return __blkdev_issue_discard(tc->pool_dev->bdev, s, len, in issue_discard()
586 struct thin_c *tc; member
610 static void error_thin_bio_list(struct thin_c *tc, struct bio_list *master, in error_thin_bio_list() argument
617 spin_lock_irq(&tc->lock); in error_thin_bio_list()
619 spin_unlock_irq(&tc->lock); in error_thin_bio_list()
624 static void requeue_deferred_cells(struct thin_c *tc) in requeue_deferred_cells() argument
626 struct pool *pool = tc->pool; in requeue_deferred_cells()
632 spin_lock_irq(&tc->lock); in requeue_deferred_cells()
633 list_splice_init(&tc->deferred_cells, &cells); in requeue_deferred_cells()
634 spin_unlock_irq(&tc->lock); in requeue_deferred_cells()
640 static void requeue_io(struct thin_c *tc) in requeue_io() argument
646 spin_lock_irq(&tc->lock); in requeue_io()
647 __merge_bio_list(&bios, &tc->deferred_bio_list); in requeue_io()
648 __merge_bio_list(&bios, &tc->retry_on_resume_list); in requeue_io()
649 spin_unlock_irq(&tc->lock); in requeue_io()
652 requeue_deferred_cells(tc); in requeue_io()
657 struct thin_c *tc; in error_retry_list_with_code() local
660 list_for_each_entry_rcu(tc, &pool->active_thins, list) in error_retry_list_with_code()
661 error_thin_bio_list(tc, &tc->retry_on_resume_list, error); in error_retry_list_with_code()
677 static dm_block_t get_bio_block(struct thin_c *tc, struct bio *bio) in get_bio_block() argument
679 struct pool *pool = tc->pool; in get_bio_block()
693 static void get_bio_block_range(struct thin_c *tc, struct bio *bio, in get_bio_block_range() argument
696 struct pool *pool = tc->pool; in get_bio_block_range()
718 static void remap(struct thin_c *tc, struct bio *bio, dm_block_t block) in remap() argument
720 struct pool *pool = tc->pool; in remap()
723 bio_set_dev(bio, tc->pool_dev->bdev); in remap()
733 static void remap_to_origin(struct thin_c *tc, struct bio *bio) in remap_to_origin() argument
735 bio_set_dev(bio, tc->origin_dev->bdev); in remap_to_origin()
738 static int bio_triggers_commit(struct thin_c *tc, struct bio *bio) in bio_triggers_commit() argument
741 dm_thin_changed_this_transaction(tc->td); in bio_triggers_commit()
755 static void issue(struct thin_c *tc, struct bio *bio) in issue() argument
757 struct pool *pool = tc->pool; in issue()
759 if (!bio_triggers_commit(tc, bio)) { in issue()
769 if (dm_thin_aborted_changes(tc->td)) { in issue()
783 static void remap_to_origin_and_issue(struct thin_c *tc, struct bio *bio) in remap_to_origin_and_issue() argument
785 remap_to_origin(tc, bio); in remap_to_origin_and_issue()
786 issue(tc, bio); in remap_to_origin_and_issue()
789 static void remap_and_issue(struct thin_c *tc, struct bio *bio, in remap_and_issue() argument
792 remap(tc, bio, block); in remap_and_issue()
793 issue(tc, bio); in remap_and_issue()
815 struct thin_c *tc; member
832 struct pool *pool = m->tc->pool; in __complete_mapping_preparation()
843 struct pool *pool = m->tc->pool; in complete_mapping_preparation()
883 static void cell_defer_no_holder(struct thin_c *tc, struct dm_bio_prison_cell *cell) in cell_defer_no_holder() argument
885 struct pool *pool = tc->pool; in cell_defer_no_holder()
889 spin_lock_irqsave(&tc->lock, flags); in cell_defer_no_holder()
890 cell_release_no_holder(pool, cell, &tc->deferred_bio_list); in cell_defer_no_holder()
891 has_work = !bio_list_empty(&tc->deferred_bio_list); in cell_defer_no_holder()
892 spin_unlock_irqrestore(&tc->lock, flags); in cell_defer_no_holder()
898 static void thin_defer_bio(struct thin_c *tc, struct bio *bio);
901 struct thin_c *tc; member
916 inc_all_io_entry(info->tc->pool, bio); in __inc_remap_and_issue_cell()
928 static void inc_remap_and_issue_cell(struct thin_c *tc, in inc_remap_and_issue_cell() argument
935 info.tc = tc; in inc_remap_and_issue_cell()
944 cell_visit_release(tc->pool, __inc_remap_and_issue_cell, in inc_remap_and_issue_cell()
948 thin_defer_bio(tc, bio); in inc_remap_and_issue_cell()
951 remap_and_issue(info.tc, bio, block); in inc_remap_and_issue_cell()
956 cell_error(m->tc->pool, m->cell); in process_prepared_mapping_fail()
958 mempool_free(m, &m->tc->pool->mapping_pool); in process_prepared_mapping_fail()
961 static void complete_overwrite_bio(struct thin_c *tc, struct bio *bio) in complete_overwrite_bio() argument
963 struct pool *pool = tc->pool; in complete_overwrite_bio()
969 if (!bio_triggers_commit(tc, bio)) { in complete_overwrite_bio()
979 if (dm_thin_aborted_changes(tc->td)) { in complete_overwrite_bio()
995 struct thin_c *tc = m->tc; in process_prepared_mapping() local
996 struct pool *pool = tc->pool; in process_prepared_mapping()
1010 r = dm_thin_insert_block(tc->td, m->virt_begin, m->data_block); in process_prepared_mapping()
1024 inc_remap_and_issue_cell(tc, m->cell, m->data_block); in process_prepared_mapping()
1025 complete_overwrite_bio(tc, bio); in process_prepared_mapping()
1027 inc_all_io_entry(tc->pool, m->cell->holder); in process_prepared_mapping()
1028 remap_and_issue(tc, m->cell->holder, m->data_block); in process_prepared_mapping()
1029 inc_remap_and_issue_cell(tc, m->cell, m->data_block); in process_prepared_mapping()
1041 struct thin_c *tc = m->tc; in free_discard_mapping() local
1043 cell_defer_no_holder(tc, m->cell); in free_discard_mapping()
1044 mempool_free(m, &tc->pool->mapping_pool); in free_discard_mapping()
1062 struct thin_c *tc = m->tc; in process_prepared_discard_no_passdown() local
1064 r = dm_thin_remove_range(tc->td, m->cell->key.block_begin, m->cell->key.block_end); in process_prepared_discard_no_passdown()
1066 metadata_operation_failed(tc->pool, "dm_thin_remove_range", r); in process_prepared_discard_no_passdown()
1071 cell_defer_no_holder(tc, m->cell); in process_prepared_discard_no_passdown()
1072 mempool_free(m, &tc->pool->mapping_pool); in process_prepared_discard_no_passdown()
1086 struct thin_c *tc = m->tc; in passdown_double_checking_shared_status() local
1087 struct pool *pool = tc->pool; in passdown_double_checking_shared_status()
1091 begin_discard(&op, tc, discard_parent); in passdown_double_checking_shared_status()
1129 struct pool *pool = m->tc->pool; in queue_passdown_pt2()
1150 struct thin_c *tc = m->tc; in process_prepared_discard_passdown_pt1() local
1151 struct pool *pool = tc->pool; in process_prepared_discard_passdown_pt1()
1160 r = dm_thin_remove_range(tc->td, m->virt_begin, m->virt_end); in process_prepared_discard_passdown_pt1()
1164 cell_defer_no_holder(tc, m->cell); in process_prepared_discard_passdown_pt1()
1177 cell_defer_no_holder(tc, m->cell); in process_prepared_discard_passdown_pt1()
1185 dm_device_name(tc->pool->pool_md)); in process_prepared_discard_passdown_pt1()
1197 begin_discard(&op, tc, discard_parent); in process_prepared_discard_passdown_pt1()
1207 struct thin_c *tc = m->tc; in process_prepared_discard_passdown_pt2() local
1208 struct pool *pool = tc->pool; in process_prepared_discard_passdown_pt2()
1222 cell_defer_no_holder(tc, m->cell); in process_prepared_discard_passdown_pt2()
1288 static void ll_zero(struct thin_c *tc, struct dm_thin_new_mapping *m, in ll_zero() argument
1293 to.bdev = tc->pool_dev->bdev; in ll_zero()
1297 dm_kcopyd_zero(tc->pool->copier, 1, &to, 0, copy_complete, m); in ll_zero()
1300 static void remap_and_issue_overwrite(struct thin_c *tc, struct bio *bio, in remap_and_issue_overwrite() argument
1304 struct pool *pool = tc->pool; in remap_and_issue_overwrite()
1311 remap_and_issue(tc, bio, data_begin); in remap_and_issue_overwrite()
1317 static void schedule_copy(struct thin_c *tc, dm_block_t virt_block, in schedule_copy() argument
1323 struct pool *pool = tc->pool; in schedule_copy()
1326 m->tc = tc; in schedule_copy()
1349 remap_and_issue_overwrite(tc, bio, data_dest, m); in schedule_copy()
1357 to.bdev = tc->pool_dev->bdev; in schedule_copy()
1369 ll_zero(tc, m, in schedule_copy()
1378 static void schedule_internal_copy(struct thin_c *tc, dm_block_t virt_block, in schedule_internal_copy() argument
1382 schedule_copy(tc, virt_block, tc->pool_dev, in schedule_internal_copy()
1384 tc->pool->sectors_per_block); in schedule_internal_copy()
1387 static void schedule_zero(struct thin_c *tc, dm_block_t virt_block, in schedule_zero() argument
1391 struct pool *pool = tc->pool; in schedule_zero()
1395 m->tc = tc; in schedule_zero()
1408 remap_and_issue_overwrite(tc, bio, data_block, m); in schedule_zero()
1410 ll_zero(tc, m, data_block * pool->sectors_per_block, in schedule_zero()
1416 static void schedule_external_copy(struct thin_c *tc, dm_block_t virt_block, in schedule_external_copy() argument
1420 struct pool *pool = tc->pool; in schedule_external_copy()
1424 if (virt_block_end <= tc->origin_size) in schedule_external_copy()
1425 schedule_copy(tc, virt_block, tc->origin_dev, in schedule_external_copy()
1429 else if (virt_block_begin < tc->origin_size) in schedule_external_copy()
1430 schedule_copy(tc, virt_block, tc->origin_dev, in schedule_external_copy()
1432 tc->origin_size - virt_block_begin); in schedule_external_copy()
1435 schedule_zero(tc, virt_block, data_dest, cell, bio); in schedule_external_copy()
1522 static int alloc_data_block(struct thin_c *tc, dm_block_t *result) in alloc_data_block() argument
1526 struct pool *pool = tc->pool; in alloc_data_block()
1592 struct thin_c *tc = h->tc; in retry_on_resume() local
1594 spin_lock_irq(&tc->lock); in retry_on_resume()
1595 bio_list_add(&tc->retry_on_resume_list, bio); in retry_on_resume()
1596 spin_unlock_irq(&tc->lock); in retry_on_resume()
1653 static void process_discard_cell_no_passdown(struct thin_c *tc, in process_discard_cell_no_passdown() argument
1656 struct pool *pool = tc->pool; in process_discard_cell_no_passdown()
1663 m->tc = tc; in process_discard_cell_no_passdown()
1673 static void break_up_discard_bio(struct thin_c *tc, dm_block_t begin, dm_block_t end, in break_up_discard_bio() argument
1676 struct pool *pool = tc->pool; in break_up_discard_bio()
1691 r = dm_thin_find_mapped_range(tc->td, begin, end, &virt_begin, &virt_end, in break_up_discard_bio()
1700 build_key(tc->td, PHYSICAL, data_begin, data_begin + (virt_end - virt_begin), &data_key); in break_up_discard_bio()
1701 if (bio_detain(tc->pool, &data_key, NULL, &data_cell)) { in break_up_discard_bio()
1712 m->tc = tc; in break_up_discard_bio()
1736 static void process_discard_cell_passdown(struct thin_c *tc, struct dm_bio_prison_cell *virt_cell) in process_discard_cell_passdown() argument
1747 break_up_discard_bio(tc, virt_cell->key.block_begin, virt_cell->key.block_end, bio); in process_discard_cell_passdown()
1757 static void process_discard_bio(struct thin_c *tc, struct bio *bio) in process_discard_bio() argument
1763 get_bio_block_range(tc, bio, &begin, &end); in process_discard_bio()
1772 build_key(tc->td, VIRTUAL, begin, end, &virt_key); in process_discard_bio()
1773 if (bio_detain(tc->pool, &virt_key, bio, &virt_cell)) in process_discard_bio()
1783 tc->pool->process_discard_cell(tc, virt_cell); in process_discard_bio()
1786 static void break_sharing(struct thin_c *tc, struct bio *bio, dm_block_t block, in break_sharing() argument
1793 struct pool *pool = tc->pool; in break_sharing()
1795 r = alloc_data_block(tc, &data_block); in break_sharing()
1798 schedule_internal_copy(tc, block, lookup_result->block, in break_sharing()
1827 h->shared_read_entry = dm_deferred_entry_inc(info->tc->pool->shared_read_ds); in __remap_and_issue_shared_cell()
1828 inc_all_io_entry(info->tc->pool, bio); in __remap_and_issue_shared_cell()
1834 static void remap_and_issue_shared_cell(struct thin_c *tc, in remap_and_issue_shared_cell() argument
1841 info.tc = tc; in remap_and_issue_shared_cell()
1845 cell_visit_release(tc->pool, __remap_and_issue_shared_cell, in remap_and_issue_shared_cell()
1849 thin_defer_bio(tc, bio); in remap_and_issue_shared_cell()
1852 remap_and_issue(tc, bio, block); in remap_and_issue_shared_cell()
1855 static void process_shared_bio(struct thin_c *tc, struct bio *bio, in process_shared_bio() argument
1861 struct pool *pool = tc->pool; in process_shared_bio()
1868 build_data_key(tc->td, lookup_result->block, &key); in process_shared_bio()
1870 cell_defer_no_holder(tc, virt_cell); in process_shared_bio()
1875 break_sharing(tc, bio, block, &key, lookup_result, data_cell); in process_shared_bio()
1876 cell_defer_no_holder(tc, virt_cell); in process_shared_bio()
1882 remap_and_issue(tc, bio, lookup_result->block); in process_shared_bio()
1884 remap_and_issue_shared_cell(tc, data_cell, lookup_result->block); in process_shared_bio()
1885 remap_and_issue_shared_cell(tc, virt_cell, lookup_result->block); in process_shared_bio()
1889 static void provision_block(struct thin_c *tc, struct bio *bio, dm_block_t block, in provision_block() argument
1894 struct pool *pool = tc->pool; in provision_block()
1901 cell_defer_no_holder(tc, cell); in provision_block()
1903 remap_and_issue(tc, bio, 0); in provision_block()
1912 cell_defer_no_holder(tc, cell); in provision_block()
1917 r = alloc_data_block(tc, &data_block); in provision_block()
1920 if (tc->origin_dev) in provision_block()
1921 schedule_external_copy(tc, block, data_block, cell, bio); in provision_block()
1923 schedule_zero(tc, block, data_block, cell, bio); in provision_block()
1938 static void process_cell(struct thin_c *tc, struct dm_bio_prison_cell *cell) in process_cell() argument
1941 struct pool *pool = tc->pool; in process_cell()
1943 dm_block_t block = get_bio_block(tc, bio); in process_cell()
1946 if (tc->requeue_mode) { in process_cell()
1951 r = dm_thin_find_block(tc->td, block, 1, &lookup_result); in process_cell()
1955 process_shared_bio(tc, bio, block, &lookup_result, cell); in process_cell()
1958 remap_and_issue(tc, bio, lookup_result.block); in process_cell()
1959 inc_remap_and_issue_cell(tc, cell, lookup_result.block); in process_cell()
1964 if (bio_data_dir(bio) == READ && tc->origin_dev) { in process_cell()
1966 cell_defer_no_holder(tc, cell); in process_cell()
1968 if (bio_end_sector(bio) <= tc->origin_size) in process_cell()
1969 remap_to_origin_and_issue(tc, bio); in process_cell()
1971 else if (bio->bi_iter.bi_sector < tc->origin_size) { in process_cell()
1973 bio->bi_iter.bi_size = (tc->origin_size - bio->bi_iter.bi_sector) << SECTOR_SHIFT; in process_cell()
1974 remap_to_origin_and_issue(tc, bio); in process_cell()
1981 provision_block(tc, bio, block, cell); in process_cell()
1987 cell_defer_no_holder(tc, cell); in process_cell()
1993 static void process_bio(struct thin_c *tc, struct bio *bio) in process_bio() argument
1995 struct pool *pool = tc->pool; in process_bio()
1996 dm_block_t block = get_bio_block(tc, bio); in process_bio()
2004 build_virtual_key(tc->td, block, &key); in process_bio()
2008 process_cell(tc, cell); in process_bio()
2011 static void __process_bio_read_only(struct thin_c *tc, struct bio *bio, in __process_bio_read_only() argument
2016 dm_block_t block = get_bio_block(tc, bio); in __process_bio_read_only()
2019 r = dm_thin_find_block(tc->td, block, 1, &lookup_result); in __process_bio_read_only()
2023 handle_unserviceable_bio(tc->pool, bio); in __process_bio_read_only()
2025 cell_defer_no_holder(tc, cell); in __process_bio_read_only()
2027 inc_all_io_entry(tc->pool, bio); in __process_bio_read_only()
2028 remap_and_issue(tc, bio, lookup_result.block); in __process_bio_read_only()
2030 inc_remap_and_issue_cell(tc, cell, lookup_result.block); in __process_bio_read_only()
2036 cell_defer_no_holder(tc, cell); in __process_bio_read_only()
2038 handle_unserviceable_bio(tc->pool, bio); in __process_bio_read_only()
2042 if (tc->origin_dev) { in __process_bio_read_only()
2043 inc_all_io_entry(tc->pool, bio); in __process_bio_read_only()
2044 remap_to_origin_and_issue(tc, bio); in __process_bio_read_only()
2056 cell_defer_no_holder(tc, cell); in __process_bio_read_only()
2062 static void process_bio_read_only(struct thin_c *tc, struct bio *bio) in process_bio_read_only() argument
2064 __process_bio_read_only(tc, bio, NULL); in process_bio_read_only()
2067 static void process_cell_read_only(struct thin_c *tc, struct dm_bio_prison_cell *cell) in process_cell_read_only() argument
2069 __process_bio_read_only(tc, cell->holder, cell); in process_cell_read_only()
2072 static void process_bio_success(struct thin_c *tc, struct bio *bio) in process_bio_success() argument
2077 static void process_bio_fail(struct thin_c *tc, struct bio *bio) in process_bio_fail() argument
2082 static void process_cell_success(struct thin_c *tc, struct dm_bio_prison_cell *cell) in process_cell_success() argument
2084 cell_success(tc->pool, cell); in process_cell_success()
2087 static void process_cell_fail(struct thin_c *tc, struct dm_bio_prison_cell *cell) in process_cell_fail() argument
2089 cell_error(tc->pool, cell); in process_cell_fail()
2105 static void __thin_bio_rb_add(struct thin_c *tc, struct bio *bio) in __thin_bio_rb_add() argument
2111 rbp = &tc->sort_bio_list.rb_node; in __thin_bio_rb_add()
2125 rb_insert_color(&pbd->rb_node, &tc->sort_bio_list); in __thin_bio_rb_add()
2128 static void __extract_sorted_bios(struct thin_c *tc) in __extract_sorted_bios() argument
2134 for (node = rb_first(&tc->sort_bio_list); node; node = rb_next(node)) { in __extract_sorted_bios()
2138 bio_list_add(&tc->deferred_bio_list, bio); in __extract_sorted_bios()
2139 rb_erase(&pbd->rb_node, &tc->sort_bio_list); in __extract_sorted_bios()
2142 WARN_ON(!RB_EMPTY_ROOT(&tc->sort_bio_list)); in __extract_sorted_bios()
2145 static void __sort_thin_deferred_bios(struct thin_c *tc) in __sort_thin_deferred_bios() argument
2151 bio_list_merge(&bios, &tc->deferred_bio_list); in __sort_thin_deferred_bios()
2152 bio_list_init(&tc->deferred_bio_list); in __sort_thin_deferred_bios()
2156 __thin_bio_rb_add(tc, bio); in __sort_thin_deferred_bios()
2163 __extract_sorted_bios(tc); in __sort_thin_deferred_bios()
2166 static void process_thin_deferred_bios(struct thin_c *tc) in process_thin_deferred_bios() argument
2168 struct pool *pool = tc->pool; in process_thin_deferred_bios()
2174 if (tc->requeue_mode) { in process_thin_deferred_bios()
2175 error_thin_bio_list(tc, &tc->deferred_bio_list, in process_thin_deferred_bios()
2182 spin_lock_irq(&tc->lock); in process_thin_deferred_bios()
2184 if (bio_list_empty(&tc->deferred_bio_list)) { in process_thin_deferred_bios()
2185 spin_unlock_irq(&tc->lock); in process_thin_deferred_bios()
2189 __sort_thin_deferred_bios(tc); in process_thin_deferred_bios()
2191 bio_list_merge(&bios, &tc->deferred_bio_list); in process_thin_deferred_bios()
2192 bio_list_init(&tc->deferred_bio_list); in process_thin_deferred_bios()
2194 spin_unlock_irq(&tc->lock); in process_thin_deferred_bios()
2204 spin_lock_irq(&tc->lock); in process_thin_deferred_bios()
2205 bio_list_add(&tc->deferred_bio_list, bio); in process_thin_deferred_bios()
2206 bio_list_merge(&tc->deferred_bio_list, &bios); in process_thin_deferred_bios()
2207 spin_unlock_irq(&tc->lock); in process_thin_deferred_bios()
2212 pool->process_discard(tc, bio); in process_thin_deferred_bios()
2214 pool->process_bio(tc, bio); in process_thin_deferred_bios()
2259 static void process_thin_deferred_cells(struct thin_c *tc) in process_thin_deferred_cells() argument
2261 struct pool *pool = tc->pool; in process_thin_deferred_cells()
2268 spin_lock_irq(&tc->lock); in process_thin_deferred_cells()
2269 list_splice_init(&tc->deferred_cells, &cells); in process_thin_deferred_cells()
2270 spin_unlock_irq(&tc->lock); in process_thin_deferred_cells()
2276 count = sort_cells(tc->pool, &cells); in process_thin_deferred_cells()
2291 spin_lock_irq(&tc->lock); in process_thin_deferred_cells()
2292 list_splice(&cells, &tc->deferred_cells); in process_thin_deferred_cells()
2293 spin_unlock_irq(&tc->lock); in process_thin_deferred_cells()
2298 pool->process_discard_cell(tc, cell); in process_thin_deferred_cells()
2300 pool->process_cell(tc, cell); in process_thin_deferred_cells()
2305 static void thin_get(struct thin_c *tc);
2306 static void thin_put(struct thin_c *tc);
2315 struct thin_c *tc = NULL; in get_first_thin() local
2319 tc = list_entry_rcu(pool->active_thins.next, struct thin_c, list); in get_first_thin()
2320 thin_get(tc); in get_first_thin()
2324 return tc; in get_first_thin()
2327 static struct thin_c *get_next_thin(struct pool *pool, struct thin_c *tc) in get_next_thin() argument
2329 struct thin_c *old_tc = tc; in get_next_thin()
2332 list_for_each_entry_continue_rcu(tc, &pool->active_thins, list) { in get_next_thin()
2333 thin_get(tc); in get_next_thin()
2336 return tc; in get_next_thin()
2348 struct thin_c *tc; in process_deferred_bios() local
2350 tc = get_first_thin(pool); in process_deferred_bios()
2351 while (tc) { in process_deferred_bios()
2352 process_thin_deferred_cells(tc); in process_deferred_bios()
2353 process_thin_deferred_bios(tc); in process_deferred_bios()
2354 tc = get_next_thin(pool, tc); in process_deferred_bios()
2475 struct thin_c *tc; member
2486 w->tc->requeue_mode = true; in do_noflush_start()
2487 requeue_io(w->tc); in do_noflush_start()
2494 w->tc->requeue_mode = false; in do_noflush_stop()
2498 static void noflush_work(struct thin_c *tc, void (*fn)(struct work_struct *)) in noflush_work() argument
2502 w.tc = tc; in noflush_work()
2503 pool_work_wait(&w.pw, tc->pool, fn); in noflush_work()
2659 static void thin_defer_bio(struct thin_c *tc, struct bio *bio) in thin_defer_bio() argument
2661 struct pool *pool = tc->pool; in thin_defer_bio()
2663 spin_lock_irq(&tc->lock); in thin_defer_bio()
2664 bio_list_add(&tc->deferred_bio_list, bio); in thin_defer_bio()
2665 spin_unlock_irq(&tc->lock); in thin_defer_bio()
2670 static void thin_defer_bio_with_throttle(struct thin_c *tc, struct bio *bio) in thin_defer_bio_with_throttle() argument
2672 struct pool *pool = tc->pool; in thin_defer_bio_with_throttle()
2675 thin_defer_bio(tc, bio); in thin_defer_bio_with_throttle()
2679 static void thin_defer_cell(struct thin_c *tc, struct dm_bio_prison_cell *cell) in thin_defer_cell() argument
2681 struct pool *pool = tc->pool; in thin_defer_cell()
2684 spin_lock_irq(&tc->lock); in thin_defer_cell()
2685 list_add_tail(&cell->user_list, &tc->deferred_cells); in thin_defer_cell()
2686 spin_unlock_irq(&tc->lock); in thin_defer_cell()
2692 static void thin_hook_bio(struct thin_c *tc, struct bio *bio) in thin_hook_bio() argument
2696 h->tc = tc; in thin_hook_bio()
2709 struct thin_c *tc = ti->private; in thin_bio_map() local
2710 dm_block_t block = get_bio_block(tc, bio); in thin_bio_map()
2711 struct dm_thin_device *td = tc->td; in thin_bio_map()
2716 thin_hook_bio(tc, bio); in thin_bio_map()
2718 if (tc->requeue_mode) { in thin_bio_map()
2724 if (get_pool_mode(tc->pool) == PM_FAIL) { in thin_bio_map()
2730 thin_defer_bio_with_throttle(tc, bio); in thin_bio_map()
2738 build_virtual_key(tc->td, block, &key); in thin_bio_map()
2739 if (bio_detain(tc->pool, &key, bio, &virt_cell)) in thin_bio_map()
2764 thin_defer_cell(tc, virt_cell); in thin_bio_map()
2768 build_data_key(tc->td, result.block, &key); in thin_bio_map()
2769 if (bio_detain(tc->pool, &key, bio, &data_cell)) { in thin_bio_map()
2770 cell_defer_no_holder(tc, virt_cell); in thin_bio_map()
2774 inc_all_io_entry(tc->pool, bio); in thin_bio_map()
2775 cell_defer_no_holder(tc, data_cell); in thin_bio_map()
2776 cell_defer_no_holder(tc, virt_cell); in thin_bio_map()
2778 remap(tc, bio, result.block); in thin_bio_map()
2783 thin_defer_cell(tc, virt_cell); in thin_bio_map()
2793 cell_defer_no_holder(tc, virt_cell); in thin_bio_map()
2800 struct thin_c *tc; in requeue_bios() local
2803 list_for_each_entry_rcu(tc, &pool->active_thins, list) { in requeue_bios()
2804 spin_lock_irq(&tc->lock); in requeue_bios()
2805 bio_list_merge(&tc->deferred_bio_list, &tc->retry_on_resume_list); in requeue_bios()
2806 bio_list_init(&tc->retry_on_resume_list); in requeue_bios()
2807 spin_unlock_irq(&tc->lock); in requeue_bios()
3597 struct thin_c *tc; in pool_suspend_active_thins() local
3600 tc = get_first_thin(pool); in pool_suspend_active_thins()
3601 while (tc) { in pool_suspend_active_thins()
3602 dm_internal_suspend_noflush(tc->thin_md); in pool_suspend_active_thins()
3603 tc = get_next_thin(pool, tc); in pool_suspend_active_thins()
3609 struct thin_c *tc; in pool_resume_active_thins() local
3612 tc = get_first_thin(pool); in pool_resume_active_thins()
3613 while (tc) { in pool_resume_active_thins()
3614 dm_internal_resume(tc->thin_md); in pool_resume_active_thins()
3615 tc = get_next_thin(pool, tc); in pool_resume_active_thins()
4125 static void thin_get(struct thin_c *tc) in thin_get() argument
4127 refcount_inc(&tc->refcount); in thin_get()
4130 static void thin_put(struct thin_c *tc) in thin_put() argument
4132 if (refcount_dec_and_test(&tc->refcount)) in thin_put()
4133 complete(&tc->can_destroy); in thin_put()
4138 struct thin_c *tc = ti->private; in thin_dtr() local
4140 spin_lock_irq(&tc->pool->lock); in thin_dtr()
4141 list_del_rcu(&tc->list); in thin_dtr()
4142 spin_unlock_irq(&tc->pool->lock); in thin_dtr()
4145 thin_put(tc); in thin_dtr()
4146 wait_for_completion(&tc->can_destroy); in thin_dtr()
4150 __pool_dec(tc->pool); in thin_dtr()
4151 dm_pool_close_thin_device(tc->td); in thin_dtr()
4152 dm_put_device(ti, tc->pool_dev); in thin_dtr()
4153 if (tc->origin_dev) in thin_dtr()
4154 dm_put_device(ti, tc->origin_dev); in thin_dtr()
4155 kfree(tc); in thin_dtr()
4175 struct thin_c *tc; in thin_ctr() local
4187 tc = ti->private = kzalloc(sizeof(*tc), GFP_KERNEL); in thin_ctr()
4188 if (!tc) { in thin_ctr()
4193 tc->thin_md = dm_table_get_md(ti->table); in thin_ctr()
4194 spin_lock_init(&tc->lock); in thin_ctr()
4195 INIT_LIST_HEAD(&tc->deferred_cells); in thin_ctr()
4196 bio_list_init(&tc->deferred_bio_list); in thin_ctr()
4197 bio_list_init(&tc->retry_on_resume_list); in thin_ctr()
4198 tc->sort_bio_list = RB_ROOT; in thin_ctr()
4212 tc->origin_dev = origin_dev; in thin_ctr()
4220 tc->pool_dev = pool_dev; in thin_ctr()
4222 if (read_dev_id(argv[1], (unsigned long long *)&tc->dev_id, 0)) { in thin_ctr()
4228 pool_md = dm_get_md(tc->pool_dev->bdev->bd_dev); in thin_ctr()
4235 tc->pool = __pool_table_lookup(pool_md); in thin_ctr()
4236 if (!tc->pool) { in thin_ctr()
4241 __pool_inc(tc->pool); in thin_ctr()
4243 if (get_pool_mode(tc->pool) == PM_FAIL) { in thin_ctr()
4249 r = dm_pool_open_thin_device(tc->pool->pmd, tc->dev_id, &tc->td); in thin_ctr()
4255 r = dm_set_target_max_io_len(ti, tc->pool->sectors_per_block); in thin_ctr()
4264 if (tc->pool->pf.discard_enabled) { in thin_ctr()
4271 spin_lock_irq(&tc->pool->lock); in thin_ctr()
4272 if (tc->pool->suspended) { in thin_ctr()
4273 spin_unlock_irq(&tc->pool->lock); in thin_ctr()
4279 refcount_set(&tc->refcount, 1); in thin_ctr()
4280 init_completion(&tc->can_destroy); in thin_ctr()
4281 list_add_tail_rcu(&tc->list, &tc->pool->active_thins); in thin_ctr()
4282 spin_unlock_irq(&tc->pool->lock); in thin_ctr()
4296 dm_pool_close_thin_device(tc->td); in thin_ctr()
4298 __pool_dec(tc->pool); in thin_ctr()
4302 dm_put_device(ti, tc->pool_dev); in thin_ctr()
4304 if (tc->origin_dev) in thin_ctr()
4305 dm_put_device(ti, tc->origin_dev); in thin_ctr()
4307 kfree(tc); in thin_ctr()
4328 struct pool *pool = h->tc->pool; in thin_endio()
4355 cell_defer_no_holder(h->tc, h->cell); in thin_endio()
4362 struct thin_c *tc = ti->private; in thin_presuspend() local
4365 noflush_work(tc, do_noflush_start); in thin_presuspend()
4370 struct thin_c *tc = ti->private; in thin_postsuspend() local
4376 noflush_work(tc, do_noflush_stop); in thin_postsuspend()
4381 struct thin_c *tc = ti->private; in thin_preresume() local
4383 if (tc->origin_dev) in thin_preresume()
4384 tc->origin_size = get_dev_size(tc->origin_dev->bdev); in thin_preresume()
4399 struct thin_c *tc = ti->private; in thin_status() local
4401 if (get_pool_mode(tc->pool) == PM_FAIL) { in thin_status()
4406 if (!tc->td) in thin_status()
4411 r = dm_thin_get_mapped_count(tc->td, &mapped); in thin_status()
4417 r = dm_thin_get_highest_mapped_block(tc->td, &highest); in thin_status()
4423 DMEMIT("%llu ", mapped * tc->pool->sectors_per_block); in thin_status()
4426 tc->pool->sectors_per_block) - 1); in thin_status()
4433 format_dev_t(buf, tc->pool_dev->bdev->bd_dev), in thin_status()
4434 (unsigned long) tc->dev_id); in thin_status()
4435 if (tc->origin_dev) in thin_status()
4436 DMEMIT(" %s", format_dev_t(buf, tc->origin_dev->bdev->bd_dev)); in thin_status()
4451 struct thin_c *tc = ti->private; in thin_iterate_devices() local
4452 struct pool *pool = tc->pool; in thin_iterate_devices()
4464 return fn(ti, tc->pool_dev, 0, pool->sectors_per_block * blocks, data); in thin_iterate_devices()
4471 struct thin_c *tc = ti->private; in thin_io_hints() local
4472 struct pool *pool = tc->pool; in thin_io_hints()