191 static int sm_ll_init(struct ll_disk *ll, struct dm_transaction_manager *tm)  in sm_ll_init()  argument
193 	memset(ll, 0, sizeof(struct ll_disk));  in sm_ll_init()
195 	ll->tm = tm;  in sm_ll_init()
197 	ll->bitmap_info.tm = tm;  in sm_ll_init()
198 	ll->bitmap_info.levels = 1;  in sm_ll_init()
205 	ll->bitmap_info.value_type.size = sizeof(struct disk_index_entry);  in sm_ll_init()
206 	ll->bitmap_info.value_type.inc = NULL;  in sm_ll_init()
207 	ll->bitmap_info.value_type.dec = NULL;  in sm_ll_init()
208 	ll->bitmap_info.value_type.equal = NULL;  in sm_ll_init()
210 	ll->ref_count_info.tm = tm;  in sm_ll_init()
211 	ll->ref_count_info.levels = 1;  in sm_ll_init()
212 	ll->ref_count_info.value_type.size = sizeof(uint32_t);  in sm_ll_init()
213 	ll->ref_count_info.value_type.inc = NULL;  in sm_ll_init()
214 	ll->ref_count_info.value_type.dec = NULL;  in sm_ll_init()
215 	ll->ref_count_info.value_type.equal = NULL;  in sm_ll_init()
217 	ll->block_size = dm_bm_block_size(dm_tm_get_bm(tm));  in sm_ll_init()
219 	if (ll->block_size > (1 << 30)) {  in sm_ll_init()
224 	ll->entries_per_block = (ll->block_size - sizeof(struct disk_bitmap_header)) *  in sm_ll_init()
226 	ll->nr_blocks = 0;  in sm_ll_init()
227 	ll->bitmap_root = 0;  in sm_ll_init()
228 	ll->ref_count_root = 0;  in sm_ll_init()
229 	ll->bitmap_index_changed = false;  in sm_ll_init()
234 int sm_ll_extend(struct ll_disk *ll, dm_block_t extra_blocks)  in sm_ll_extend()  argument
240 	nr_blocks = ll->nr_blocks + extra_blocks;  in sm_ll_extend()
241 	old_blocks = dm_sector_div_up(ll->nr_blocks, ll->entries_per_block);  in sm_ll_extend()
242 	blocks = dm_sector_div_up(nr_blocks, ll->entries_per_block);  in sm_ll_extend()
244 	nr_indexes = dm_sector_div_up(nr_blocks, ll->entries_per_block);  in sm_ll_extend()
245 	if (nr_indexes > ll->max_entries(ll)) {  in sm_ll_extend()
253 	ll->nr_blocks = nr_blocks;  in sm_ll_extend()
258 		r = dm_tm_new_block(ll->tm, &dm_sm_bitmap_validator, &b);  in sm_ll_extend()
264 		dm_tm_unlock(ll->tm, b);  in sm_ll_extend()
266 		idx.nr_free = cpu_to_le32(ll->entries_per_block);  in sm_ll_extend()
269 		r = ll->save_ie(ll, i, &idx);  in sm_ll_extend()
277 int sm_ll_lookup_bitmap(struct ll_disk *ll, dm_block_t b, uint32_t *result)  in sm_ll_lookup_bitmap()  argument
284 	b = do_div(index, ll->entries_per_block);  in sm_ll_lookup_bitmap()
285 	r = ll->load_ie(ll, index, &ie_disk);  in sm_ll_lookup_bitmap()
289 	r = dm_tm_read_lock(ll->tm, le64_to_cpu(ie_disk.blocknr),  in sm_ll_lookup_bitmap()
296 	dm_tm_unlock(ll->tm, blk);  in sm_ll_lookup_bitmap()
301 static int sm_ll_lookup_big_ref_count(struct ll_disk *ll, dm_block_t b,  in sm_ll_lookup_big_ref_count()  argument
307 	r = dm_btree_lookup(&ll->ref_count_info, ll->ref_count_root, &b, &le_rc);  in sm_ll_lookup_big_ref_count()
316 int sm_ll_lookup(struct ll_disk *ll, dm_block_t b, uint32_t *result)  in sm_ll_lookup()  argument
318 	int r = sm_ll_lookup_bitmap(ll, b, result);  in sm_ll_lookup()
326 	return sm_ll_lookup_big_ref_count(ll, b, result);  in sm_ll_lookup()
329 int sm_ll_find_free_block(struct ll_disk *ll, dm_block_t begin,  in sm_ll_find_free_block()  argument
335 	dm_block_t index_end = dm_sector_div_up(end, ll->entries_per_block);  in sm_ll_find_free_block()
340 	begin = do_div(index_begin, ll->entries_per_block);  in sm_ll_find_free_block()
341 	end = do_div(end, ll->entries_per_block);  in sm_ll_find_free_block()
348 		r = ll->load_ie(ll, i, &ie_disk);  in sm_ll_find_free_block()
355 		r = dm_tm_read_lock(ll->tm, le64_to_cpu(ie_disk.blocknr),  in sm_ll_find_free_block()
360 		bit_end = (i == index_end - 1) ?  end : ll->entries_per_block;  in sm_ll_find_free_block()
370 			dm_tm_unlock(ll->tm, blk);  in sm_ll_find_free_block()
374 		dm_tm_unlock(ll->tm, blk);  in sm_ll_find_free_block()
376 		*result = i * ll->entries_per_block + (dm_block_t) position;  in sm_ll_find_free_block()
410 static int sm_ll_mutate(struct ll_disk *ll, dm_block_t b,  in sm_ll_mutate()  argument
422 	bit = do_div(index, ll->entries_per_block);  in sm_ll_mutate()
423 	r = ll->load_ie(ll, index, &ie_disk);  in sm_ll_mutate()
427 	r = dm_tm_shadow_block(ll->tm, le64_to_cpu(ie_disk.blocknr),  in sm_ll_mutate()
439 		r = sm_ll_lookup_big_ref_count(ll, b, &old);  in sm_ll_mutate()
441 			dm_tm_unlock(ll->tm, nb);  in sm_ll_mutate()
448 		dm_tm_unlock(ll->tm, nb);  in sm_ll_mutate()
455 		dm_tm_unlock(ll->tm, nb);  in sm_ll_mutate()
458 			r = dm_btree_remove(&ll->ref_count_info,  in sm_ll_mutate()
459 					    ll->ref_count_root,  in sm_ll_mutate()
460 					    &b, &ll->ref_count_root);  in sm_ll_mutate()
469 		dm_tm_unlock(ll->tm, nb);  in sm_ll_mutate()
472 		r = dm_btree_insert(&ll->ref_count_info, ll->ref_count_root,  in sm_ll_mutate()
473 				    &b, &le_rc, &ll->ref_count_root);  in sm_ll_mutate()
482 		ll->nr_allocated++;  in sm_ll_mutate()
489 		ll->nr_allocated--;  in sm_ll_mutate()
495 	return ll->save_ie(ll, index, &ie_disk);  in sm_ll_mutate()
504 int sm_ll_insert(struct ll_disk *ll, dm_block_t b,  in sm_ll_insert()  argument
507 	return sm_ll_mutate(ll, b, set_ref_count, &ref_count, ev);  in sm_ll_insert()
516 int sm_ll_inc(struct ll_disk *ll, dm_block_t b, enum allocation_event *ev)  in sm_ll_inc()  argument
518 	return sm_ll_mutate(ll, b, inc_ref_count, NULL, ev);  in sm_ll_inc()
532 int sm_ll_dec(struct ll_disk *ll, dm_block_t b, enum allocation_event *ev)  in sm_ll_dec()  argument
534 	return sm_ll_mutate(ll, b, dec_ref_count, NULL, ev);  in sm_ll_dec()
537 int sm_ll_commit(struct ll_disk *ll)  in sm_ll_commit()  argument
541 	if (ll->bitmap_index_changed) {  in sm_ll_commit()
542 		r = ll->commit(ll);  in sm_ll_commit()
544 			ll->bitmap_index_changed = false;  in sm_ll_commit()
552 static int metadata_ll_load_ie(struct ll_disk *ll, dm_block_t index,  in metadata_ll_load_ie()  argument
555 	memcpy(ie, ll->mi_le.index + index, sizeof(*ie));  in metadata_ll_load_ie()
559 static int metadata_ll_save_ie(struct ll_disk *ll, dm_block_t index,  in metadata_ll_save_ie()  argument
562 	ll->bitmap_index_changed = true;  in metadata_ll_save_ie()
563 	memcpy(ll->mi_le.index + index, ie, sizeof(*ie));  in metadata_ll_save_ie()
567 static int metadata_ll_init_index(struct ll_disk *ll)  in metadata_ll_init_index()  argument
572 	r = dm_tm_new_block(ll->tm, &index_validator, &b);  in metadata_ll_init_index()
576 	ll->bitmap_root = dm_block_location(b);  in metadata_ll_init_index()
578 	dm_tm_unlock(ll->tm, b);  in metadata_ll_init_index()
583 static int metadata_ll_open(struct ll_disk *ll)  in metadata_ll_open()  argument
588 	r = dm_tm_read_lock(ll->tm, ll->bitmap_root,  in metadata_ll_open()
593 	memcpy(&ll->mi_le, dm_block_data(block), sizeof(ll->mi_le));  in metadata_ll_open()
594 	dm_tm_unlock(ll->tm, block);  in metadata_ll_open()
599 static dm_block_t metadata_ll_max_entries(struct ll_disk *ll)  in metadata_ll_max_entries()  argument
604 static int metadata_ll_commit(struct ll_disk *ll)  in metadata_ll_commit()  argument
609 	r = dm_tm_shadow_block(ll->tm, ll->bitmap_root, &index_validator, &b, &inc);  in metadata_ll_commit()
613 	memcpy(dm_block_data(b), &ll->mi_le, sizeof(ll->mi_le));  in metadata_ll_commit()
614 	ll->bitmap_root = dm_block_location(b);  in metadata_ll_commit()
616 	dm_tm_unlock(ll->tm, b);  in metadata_ll_commit()
621 int sm_ll_new_metadata(struct ll_disk *ll, struct dm_transaction_manager *tm)  in sm_ll_new_metadata()  argument
625 	r = sm_ll_init(ll, tm);  in sm_ll_new_metadata()
629 	ll->load_ie = metadata_ll_load_ie;  in sm_ll_new_metadata()
630 	ll->save_ie = metadata_ll_save_ie;  in sm_ll_new_metadata()
631 	ll->init_index = metadata_ll_init_index;  in sm_ll_new_metadata()
632 	ll->open_index = metadata_ll_open;  in sm_ll_new_metadata()
633 	ll->max_entries = metadata_ll_max_entries;  in sm_ll_new_metadata()
634 	ll->commit = metadata_ll_commit;  in sm_ll_new_metadata()
636 	ll->nr_blocks = 0;  in sm_ll_new_metadata()
637 	ll->nr_allocated = 0;  in sm_ll_new_metadata()
639 	r = ll->init_index(ll);  in sm_ll_new_metadata()
643 	r = dm_btree_empty(&ll->ref_count_info, &ll->ref_count_root);  in sm_ll_new_metadata()
650 int sm_ll_open_metadata(struct ll_disk *ll, struct dm_transaction_manager *tm,  in sm_ll_open_metadata()  argument
667 	r = sm_ll_init(ll, tm);  in sm_ll_open_metadata()
671 	ll->load_ie = metadata_ll_load_ie;  in sm_ll_open_metadata()
672 	ll->save_ie = metadata_ll_save_ie;  in sm_ll_open_metadata()
673 	ll->init_index = metadata_ll_init_index;  in sm_ll_open_metadata()
674 	ll->open_index = metadata_ll_open;  in sm_ll_open_metadata()
675 	ll->max_entries = metadata_ll_max_entries;  in sm_ll_open_metadata()
676 	ll->commit = metadata_ll_commit;  in sm_ll_open_metadata()
678 	ll->nr_blocks = le64_to_cpu(smr.nr_blocks);  in sm_ll_open_metadata()
679 	ll->nr_allocated = le64_to_cpu(smr.nr_allocated);  in sm_ll_open_metadata()
680 	ll->bitmap_root = le64_to_cpu(smr.bitmap_root);  in sm_ll_open_metadata()
681 	ll->ref_count_root = le64_to_cpu(smr.ref_count_root);  in sm_ll_open_metadata()
683 	return ll->open_index(ll);  in sm_ll_open_metadata()
688 static int disk_ll_load_ie(struct ll_disk *ll, dm_block_t index,  in disk_ll_load_ie()  argument
691 	return dm_btree_lookup(&ll->bitmap_info, ll->bitmap_root, &index, ie);  in disk_ll_load_ie()
694 static int disk_ll_save_ie(struct ll_disk *ll, dm_block_t index,  in disk_ll_save_ie()  argument
698 	return dm_btree_insert(&ll->bitmap_info, ll->bitmap_root,  in disk_ll_save_ie()
699 			       &index, ie, &ll->bitmap_root);  in disk_ll_save_ie()
702 static int disk_ll_init_index(struct ll_disk *ll)  in disk_ll_init_index()  argument
704 	return dm_btree_empty(&ll->bitmap_info, &ll->bitmap_root);  in disk_ll_init_index()
707 static int disk_ll_open(struct ll_disk *ll)  in disk_ll_open()  argument
713 static dm_block_t disk_ll_max_entries(struct ll_disk *ll)  in disk_ll_max_entries()  argument
718 static int disk_ll_commit(struct ll_disk *ll)  in disk_ll_commit()  argument
723 int sm_ll_new_disk(struct ll_disk *ll, struct dm_transaction_manager *tm)  in sm_ll_new_disk()  argument
727 	r = sm_ll_init(ll, tm);  in sm_ll_new_disk()
731 	ll->load_ie = disk_ll_load_ie;  in sm_ll_new_disk()
732 	ll->save_ie = disk_ll_save_ie;  in sm_ll_new_disk()
733 	ll->init_index = disk_ll_init_index;  in sm_ll_new_disk()
734 	ll->open_index = disk_ll_open;  in sm_ll_new_disk()
735 	ll->max_entries = disk_ll_max_entries;  in sm_ll_new_disk()
736 	ll->commit = disk_ll_commit;  in sm_ll_new_disk()
738 	ll->nr_blocks = 0;  in sm_ll_new_disk()
739 	ll->nr_allocated = 0;  in sm_ll_new_disk()
741 	r = ll->init_index(ll);  in sm_ll_new_disk()
745 	r = dm_btree_empty(&ll->ref_count_info, &ll->ref_count_root);  in sm_ll_new_disk()
752 int sm_ll_open_disk(struct ll_disk *ll, struct dm_transaction_manager *tm,  in sm_ll_open_disk()  argument
763 	r = sm_ll_init(ll, tm);  in sm_ll_open_disk()
767 	ll->load_ie = disk_ll_load_ie;  in sm_ll_open_disk()
768 	ll->save_ie = disk_ll_save_ie;  in sm_ll_open_disk()
769 	ll->init_index = disk_ll_init_index;  in sm_ll_open_disk()
770 	ll->open_index = disk_ll_open;  in sm_ll_open_disk()
771 	ll->max_entries = disk_ll_max_entries;  in sm_ll_open_disk()
772 	ll->commit = disk_ll_commit;  in sm_ll_open_disk()
774 	ll->nr_blocks = le64_to_cpu(smr->nr_blocks);  in sm_ll_open_disk()
775 	ll->nr_allocated = le64_to_cpu(smr->nr_allocated);  in sm_ll_open_disk()
776 	ll->bitmap_root = le64_to_cpu(smr->bitmap_root);  in sm_ll_open_disk()
777 	ll->ref_count_root = le64_to_cpu(smr->ref_count_root);  in sm_ll_open_disk()
779 	return ll->open_index(ll);  in sm_ll_open_disk()