193 static int sm_ll_init(struct ll_disk *ll, struct dm_transaction_manager *tm)  in sm_ll_init()  argument
195 	memset(ll, 0, sizeof(struct ll_disk));  in sm_ll_init()
197 	ll->tm = tm;  in sm_ll_init()
199 	ll->bitmap_info.tm = tm;  in sm_ll_init()
200 	ll->bitmap_info.levels = 1;  in sm_ll_init()
207 	ll->bitmap_info.value_type.size = sizeof(struct disk_index_entry);  in sm_ll_init()
208 	ll->bitmap_info.value_type.inc = NULL;  in sm_ll_init()
209 	ll->bitmap_info.value_type.dec = NULL;  in sm_ll_init()
210 	ll->bitmap_info.value_type.equal = NULL;  in sm_ll_init()
212 	ll->ref_count_info.tm = tm;  in sm_ll_init()
213 	ll->ref_count_info.levels = 1;  in sm_ll_init()
214 	ll->ref_count_info.value_type.size = sizeof(uint32_t);  in sm_ll_init()
215 	ll->ref_count_info.value_type.inc = NULL;  in sm_ll_init()
216 	ll->ref_count_info.value_type.dec = NULL;  in sm_ll_init()
217 	ll->ref_count_info.value_type.equal = NULL;  in sm_ll_init()
219 	ll->block_size = dm_bm_block_size(dm_tm_get_bm(tm));  in sm_ll_init()
221 	if (ll->block_size > (1 << 30)) {  in sm_ll_init()
226 	ll->entries_per_block = (ll->block_size - sizeof(struct disk_bitmap_header)) *  in sm_ll_init()
228 	ll->nr_blocks = 0;  in sm_ll_init()
229 	ll->bitmap_root = 0;  in sm_ll_init()
230 	ll->ref_count_root = 0;  in sm_ll_init()
231 	ll->bitmap_index_changed = false;  in sm_ll_init()
236 int sm_ll_extend(struct ll_disk *ll, dm_block_t extra_blocks)  in sm_ll_extend()  argument
242 	nr_blocks = ll->nr_blocks + extra_blocks;  in sm_ll_extend()
243 	old_blocks = dm_sector_div_up(ll->nr_blocks, ll->entries_per_block);  in sm_ll_extend()
244 	blocks = dm_sector_div_up(nr_blocks, ll->entries_per_block);  in sm_ll_extend()
246 	nr_indexes = dm_sector_div_up(nr_blocks, ll->entries_per_block);  in sm_ll_extend()
247 	if (nr_indexes > ll->max_entries(ll)) {  in sm_ll_extend()
255 	ll->nr_blocks = nr_blocks;  in sm_ll_extend()
260 		r = dm_tm_new_block(ll->tm, &dm_sm_bitmap_validator, &b);  in sm_ll_extend()
266 		dm_tm_unlock(ll->tm, b);  in sm_ll_extend()
268 		idx.nr_free = cpu_to_le32(ll->entries_per_block);  in sm_ll_extend()
271 		r = ll->save_ie(ll, i, &idx);  in sm_ll_extend()
279 int sm_ll_lookup_bitmap(struct ll_disk *ll, dm_block_t b, uint32_t *result)  in sm_ll_lookup_bitmap()  argument
286 	if (b >= ll->nr_blocks) {  in sm_ll_lookup_bitmap()
291 	b = do_div(index, ll->entries_per_block);  in sm_ll_lookup_bitmap()
292 	r = ll->load_ie(ll, index, &ie_disk);  in sm_ll_lookup_bitmap()
296 	r = dm_tm_read_lock(ll->tm, le64_to_cpu(ie_disk.blocknr),  in sm_ll_lookup_bitmap()
303 	dm_tm_unlock(ll->tm, blk);  in sm_ll_lookup_bitmap()
308 static int sm_ll_lookup_big_ref_count(struct ll_disk *ll, dm_block_t b,  in sm_ll_lookup_big_ref_count()  argument
314 	r = dm_btree_lookup(&ll->ref_count_info, ll->ref_count_root, &b, &le_rc);  in sm_ll_lookup_big_ref_count()
323 int sm_ll_lookup(struct ll_disk *ll, dm_block_t b, uint32_t *result)  in sm_ll_lookup()  argument
325 	int r = sm_ll_lookup_bitmap(ll, b, result);  in sm_ll_lookup()
333 	return sm_ll_lookup_big_ref_count(ll, b, result);  in sm_ll_lookup()
336 int sm_ll_find_free_block(struct ll_disk *ll, dm_block_t begin,  in sm_ll_find_free_block()  argument
342 	dm_block_t index_end = dm_sector_div_up(end, ll->entries_per_block);  in sm_ll_find_free_block()
347 	begin = do_div(index_begin, ll->entries_per_block);  in sm_ll_find_free_block()
348 	end = do_div(end, ll->entries_per_block);  in sm_ll_find_free_block()
350 		end = ll->entries_per_block;  in sm_ll_find_free_block()
357 		r = ll->load_ie(ll, i, &ie_disk);  in sm_ll_find_free_block()
364 		r = dm_tm_read_lock(ll->tm, le64_to_cpu(ie_disk.blocknr),  in sm_ll_find_free_block()
369 		bit_end = (i == index_end - 1) ?  end : ll->entries_per_block;  in sm_ll_find_free_block()
379 			dm_tm_unlock(ll->tm, blk);  in sm_ll_find_free_block()
383 		dm_tm_unlock(ll->tm, blk);  in sm_ll_find_free_block()
385 		*result = i * ll->entries_per_block + (dm_block_t) position;  in sm_ll_find_free_block()
421 int sm_ll_insert(struct ll_disk *ll, dm_block_t b,  in sm_ll_insert()  argument
432 	bit = do_div(index, ll->entries_per_block);  in sm_ll_insert()
433 	r = ll->load_ie(ll, index, &ie_disk);  in sm_ll_insert()
437 	r = dm_tm_shadow_block(ll->tm, le64_to_cpu(ie_disk.blocknr),  in sm_ll_insert()
448 		r = sm_ll_lookup_big_ref_count(ll, b, &old);  in sm_ll_insert()
450 			dm_tm_unlock(ll->tm, nb);  in sm_ll_insert()
456 		dm_tm_unlock(ll->tm, nb);  in sm_ll_insert()
462 		dm_tm_unlock(ll->tm, nb);  in sm_ll_insert()
465 			r = dm_btree_remove(&ll->ref_count_info,  in sm_ll_insert()
466 					    ll->ref_count_root,  in sm_ll_insert()
467 					    &b, &ll->ref_count_root);  in sm_ll_insert()
476 		dm_tm_unlock(ll->tm, nb);  in sm_ll_insert()
479 		r = dm_btree_insert(&ll->ref_count_info, ll->ref_count_root,  in sm_ll_insert()
480 				    &b, &le_rc, &ll->ref_count_root);  in sm_ll_insert()
489 		ll->nr_allocated++;  in sm_ll_insert()
496 		ll->nr_allocated--;  in sm_ll_insert()
502 	return ll->save_ie(ll, index, &ie_disk);  in sm_ll_insert()
526 static inline void exit_inc_context(struct ll_disk *ll, struct inc_context *ic)  in exit_inc_context()  argument
529 		dm_tm_unlock(ll->tm, ic->bitmap_block);  in exit_inc_context()
531 		dm_tm_unlock(ll->tm, ic->overflow_leaf);  in exit_inc_context()
534 static inline void reset_inc_context(struct ll_disk *ll, struct inc_context *ic)  in reset_inc_context()  argument
536 	exit_inc_context(ll, ic);  in reset_inc_context()
550 static int __sm_ll_inc_overflow(struct ll_disk *ll, dm_block_t b, struct inc_context *ic)  in __sm_ll_inc_overflow()  argument
562 	reset_inc_context(ll, ic);  in __sm_ll_inc_overflow()
564 	r = btree_get_overwrite_leaf(&ll->ref_count_info, ll->ref_count_root,  in __sm_ll_inc_overflow()
565 				     b, &index, &ll->ref_count_root, &ic->overflow_leaf);  in __sm_ll_inc_overflow()
583 static int sm_ll_inc_overflow(struct ll_disk *ll, dm_block_t b, struct inc_context *ic)  in sm_ll_inc_overflow()  argument
605 	return __sm_ll_inc_overflow(ll, b, ic);  in sm_ll_inc_overflow()
608 static inline int shadow_bitmap(struct ll_disk *ll, struct inc_context *ic)  in shadow_bitmap()  argument
611 	r = dm_tm_shadow_block(ll->tm, le64_to_cpu(ic->ie_disk.blocknr),  in shadow_bitmap()
627 static inline int ensure_bitmap(struct ll_disk *ll, struct inc_context *ic)  in ensure_bitmap()  argument
630 		int r = dm_bm_write_lock(dm_tm_get_bm(ll->tm), le64_to_cpu(ic->ie_disk.blocknr),  in ensure_bitmap()
645 static inline int sm_ll_inc_bitmap(struct ll_disk *ll, dm_block_t b,  in sm_ll_inc_bitmap()  argument
660 		r = ensure_bitmap(ll, ic);  in sm_ll_inc_bitmap()
670 			ll->nr_allocated++;  in sm_ll_inc_bitmap()
684 			reset_inc_context(ll, ic);  in sm_ll_inc_bitmap()
688 			r = dm_btree_insert(&ll->ref_count_info, ll->ref_count_root,  in sm_ll_inc_bitmap()
689 					    &b, &le_rc, &ll->ref_count_root);  in sm_ll_inc_bitmap()
700 			r = sm_ll_inc_overflow(ll, b, ic);  in sm_ll_inc_bitmap()
714 static int __sm_ll_inc(struct ll_disk *ll, dm_block_t b, dm_block_t e,  in __sm_ll_inc()  argument
724 	bit = do_div(index, ll->entries_per_block);  in __sm_ll_inc()
725 	r = ll->load_ie(ll, index, &ic.ie_disk);  in __sm_ll_inc()
729 	r = shadow_bitmap(ll, &ic);  in __sm_ll_inc()
733 	bit_end = min(bit + (e - b), (dm_block_t) ll->entries_per_block);  in __sm_ll_inc()
734 	r = sm_ll_inc_bitmap(ll, b, bit, bit_end, nr_allocations, new_b, &ic);  in __sm_ll_inc()
736 	exit_inc_context(ll, &ic);  in __sm_ll_inc()
741 	return ll->save_ie(ll, index, &ic.ie_disk);  in __sm_ll_inc()
744 int sm_ll_inc(struct ll_disk *ll, dm_block_t b, dm_block_t e,  in sm_ll_inc()  argument
749 		int r = __sm_ll_inc(ll, b, e, nr_allocations, &b);  in sm_ll_inc()
759 static int __sm_ll_del_overflow(struct ll_disk *ll, dm_block_t b,  in __sm_ll_del_overflow()  argument
762 	reset_inc_context(ll, ic);  in __sm_ll_del_overflow()
763 	return dm_btree_remove(&ll->ref_count_info, ll->ref_count_root,  in __sm_ll_del_overflow()
764 			       &b, &ll->ref_count_root);  in __sm_ll_del_overflow()
767 static int __sm_ll_dec_overflow(struct ll_disk *ll, dm_block_t b,  in __sm_ll_dec_overflow()  argument
776 	reset_inc_context(ll, ic);  in __sm_ll_dec_overflow()
777 	r = btree_get_overwrite_leaf(&ll->ref_count_info, ll->ref_count_root,  in __sm_ll_dec_overflow()
778 				     b, &index, &ll->ref_count_root, &ic->overflow_leaf);  in __sm_ll_dec_overflow()
794 		return __sm_ll_del_overflow(ll, b, ic);  in __sm_ll_dec_overflow()
802 static int sm_ll_dec_overflow(struct ll_disk *ll, dm_block_t b,  in sm_ll_dec_overflow()  argument
826 				return __sm_ll_del_overflow(ll, b, ic);  in sm_ll_dec_overflow()
832 	return __sm_ll_dec_overflow(ll, b, ic, old_rc);  in sm_ll_dec_overflow()
838 static inline int sm_ll_dec_bitmap(struct ll_disk *ll, dm_block_t b,  in sm_ll_dec_bitmap()  argument
852 		r = ensure_bitmap(ll, ic);  in sm_ll_dec_bitmap()
866 			ll->nr_allocated--;  in sm_ll_dec_bitmap()
878 			r = sm_ll_dec_overflow(ll, b, ic, &old);  in sm_ll_dec_bitmap()
883 				r = ensure_bitmap(ll, ic);  in sm_ll_dec_bitmap()
897 static int __sm_ll_dec(struct ll_disk *ll, dm_block_t b, dm_block_t e,  in __sm_ll_dec()  argument
907 	bit = do_div(index, ll->entries_per_block);  in __sm_ll_dec()
908 	r = ll->load_ie(ll, index, &ic.ie_disk);  in __sm_ll_dec()
912 	r = shadow_bitmap(ll, &ic);  in __sm_ll_dec()
916 	bit_end = min(bit + (e - b), (dm_block_t) ll->entries_per_block);  in __sm_ll_dec()
917 	r = sm_ll_dec_bitmap(ll, b, bit, bit_end, &ic, nr_allocations, new_b);  in __sm_ll_dec()
918 	exit_inc_context(ll, &ic);  in __sm_ll_dec()
923 	return ll->save_ie(ll, index, &ic.ie_disk);  in __sm_ll_dec()
926 int sm_ll_dec(struct ll_disk *ll, dm_block_t b, dm_block_t e,  in sm_ll_dec()  argument
931 		int r = __sm_ll_dec(ll, b, e, nr_allocations, &b);  in sm_ll_dec()
941 int sm_ll_commit(struct ll_disk *ll)  in sm_ll_commit()  argument
945 	if (ll->bitmap_index_changed) {  in sm_ll_commit()
946 		r = ll->commit(ll);  in sm_ll_commit()
948 			ll->bitmap_index_changed = false;  in sm_ll_commit()
956 static int metadata_ll_load_ie(struct ll_disk *ll, dm_block_t index,  in metadata_ll_load_ie()  argument
959 	memcpy(ie, ll->mi_le.index + index, sizeof(*ie));  in metadata_ll_load_ie()
963 static int metadata_ll_save_ie(struct ll_disk *ll, dm_block_t index,  in metadata_ll_save_ie()  argument
966 	ll->bitmap_index_changed = true;  in metadata_ll_save_ie()
967 	memcpy(ll->mi_le.index + index, ie, sizeof(*ie));  in metadata_ll_save_ie()
971 static int metadata_ll_init_index(struct ll_disk *ll)  in metadata_ll_init_index()  argument
976 	r = dm_tm_new_block(ll->tm, &index_validator, &b);  in metadata_ll_init_index()
980 	ll->bitmap_root = dm_block_location(b);  in metadata_ll_init_index()
982 	dm_tm_unlock(ll->tm, b);  in metadata_ll_init_index()
987 static int metadata_ll_open(struct ll_disk *ll)  in metadata_ll_open()  argument
992 	r = dm_tm_read_lock(ll->tm, ll->bitmap_root,  in metadata_ll_open()
997 	memcpy(&ll->mi_le, dm_block_data(block), sizeof(ll->mi_le));  in metadata_ll_open()
998 	dm_tm_unlock(ll->tm, block);  in metadata_ll_open()
1003 static dm_block_t metadata_ll_max_entries(struct ll_disk *ll)  in metadata_ll_max_entries()  argument
1008 static int metadata_ll_commit(struct ll_disk *ll)  in metadata_ll_commit()  argument
1013 	r = dm_tm_shadow_block(ll->tm, ll->bitmap_root, &index_validator, &b, &inc);  in metadata_ll_commit()
1017 	memcpy(dm_block_data(b), &ll->mi_le, sizeof(ll->mi_le));  in metadata_ll_commit()
1018 	ll->bitmap_root = dm_block_location(b);  in metadata_ll_commit()
1020 	dm_tm_unlock(ll->tm, b);  in metadata_ll_commit()
1025 int sm_ll_new_metadata(struct ll_disk *ll, struct dm_transaction_manager *tm)  in sm_ll_new_metadata()  argument
1029 	r = sm_ll_init(ll, tm);  in sm_ll_new_metadata()
1033 	ll->load_ie = metadata_ll_load_ie;  in sm_ll_new_metadata()
1034 	ll->save_ie = metadata_ll_save_ie;  in sm_ll_new_metadata()
1035 	ll->init_index = metadata_ll_init_index;  in sm_ll_new_metadata()
1036 	ll->open_index = metadata_ll_open;  in sm_ll_new_metadata()
1037 	ll->max_entries = metadata_ll_max_entries;  in sm_ll_new_metadata()
1038 	ll->commit = metadata_ll_commit;  in sm_ll_new_metadata()
1040 	ll->nr_blocks = 0;  in sm_ll_new_metadata()
1041 	ll->nr_allocated = 0;  in sm_ll_new_metadata()
1043 	r = ll->init_index(ll);  in sm_ll_new_metadata()
1047 	r = dm_btree_empty(&ll->ref_count_info, &ll->ref_count_root);  in sm_ll_new_metadata()
1054 int sm_ll_open_metadata(struct ll_disk *ll, struct dm_transaction_manager *tm,  in sm_ll_open_metadata()  argument
1071 	r = sm_ll_init(ll, tm);  in sm_ll_open_metadata()
1075 	ll->load_ie = metadata_ll_load_ie;  in sm_ll_open_metadata()
1076 	ll->save_ie = metadata_ll_save_ie;  in sm_ll_open_metadata()
1077 	ll->init_index = metadata_ll_init_index;  in sm_ll_open_metadata()
1078 	ll->open_index = metadata_ll_open;  in sm_ll_open_metadata()
1079 	ll->max_entries = metadata_ll_max_entries;  in sm_ll_open_metadata()
1080 	ll->commit = metadata_ll_commit;  in sm_ll_open_metadata()
1082 	ll->nr_blocks = le64_to_cpu(smr.nr_blocks);  in sm_ll_open_metadata()
1083 	ll->nr_allocated = le64_to_cpu(smr.nr_allocated);  in sm_ll_open_metadata()
1084 	ll->bitmap_root = le64_to_cpu(smr.bitmap_root);  in sm_ll_open_metadata()
1085 	ll->ref_count_root = le64_to_cpu(smr.ref_count_root);  in sm_ll_open_metadata()
1087 	return ll->open_index(ll);  in sm_ll_open_metadata()
1092 static inline int ie_cache_writeback(struct ll_disk *ll, struct ie_cache *iec)  in ie_cache_writeback()  argument
1096 	return dm_btree_insert(&ll->bitmap_info, ll->bitmap_root,  in ie_cache_writeback()
1097 			       &iec->index, &iec->ie, &ll->bitmap_root);  in ie_cache_writeback()
1105 static int disk_ll_load_ie(struct ll_disk *ll, dm_block_t index,  in disk_ll_load_ie()  argument
1110 	struct ie_cache *iec = ll->ie_cache + h;  in disk_ll_load_ie()
1119 			r = ie_cache_writeback(ll, iec);  in disk_ll_load_ie()
1125 	r = dm_btree_lookup(&ll->bitmap_info, ll->bitmap_root, &index, ie);  in disk_ll_load_ie()
1136 static int disk_ll_save_ie(struct ll_disk *ll, dm_block_t index,  in disk_ll_save_ie()  argument
1141 	struct ie_cache *iec = ll->ie_cache + h;  in disk_ll_save_ie()
1143 	ll->bitmap_index_changed = true;  in disk_ll_save_ie()
1152 			r = ie_cache_writeback(ll, iec);  in disk_ll_save_ie()
1165 static int disk_ll_init_index(struct ll_disk *ll)  in disk_ll_init_index()  argument
1169 		struct ie_cache *iec = ll->ie_cache + i;  in disk_ll_init_index()
1173 	return dm_btree_empty(&ll->bitmap_info, &ll->bitmap_root);  in disk_ll_init_index()
1176 static int disk_ll_open(struct ll_disk *ll)  in disk_ll_open()  argument
1181 static dm_block_t disk_ll_max_entries(struct ll_disk *ll)  in disk_ll_max_entries()  argument
1186 static int disk_ll_commit(struct ll_disk *ll)  in disk_ll_commit()  argument
1192 		struct ie_cache *iec = ll->ie_cache + i;  in disk_ll_commit()
1194 			r = ie_cache_writeback(ll, iec);  in disk_ll_commit()
1200 int sm_ll_new_disk(struct ll_disk *ll, struct dm_transaction_manager *tm)  in sm_ll_new_disk()  argument
1204 	r = sm_ll_init(ll, tm);  in sm_ll_new_disk()
1208 	ll->load_ie = disk_ll_load_ie;  in sm_ll_new_disk()
1209 	ll->save_ie = disk_ll_save_ie;  in sm_ll_new_disk()
1210 	ll->init_index = disk_ll_init_index;  in sm_ll_new_disk()
1211 	ll->open_index = disk_ll_open;  in sm_ll_new_disk()
1212 	ll->max_entries = disk_ll_max_entries;  in sm_ll_new_disk()
1213 	ll->commit = disk_ll_commit;  in sm_ll_new_disk()
1215 	ll->nr_blocks = 0;  in sm_ll_new_disk()
1216 	ll->nr_allocated = 0;  in sm_ll_new_disk()
1218 	r = ll->init_index(ll);  in sm_ll_new_disk()
1222 	r = dm_btree_empty(&ll->ref_count_info, &ll->ref_count_root);  in sm_ll_new_disk()
1229 int sm_ll_open_disk(struct ll_disk *ll, struct dm_transaction_manager *tm,  in sm_ll_open_disk()  argument
1240 	r = sm_ll_init(ll, tm);  in sm_ll_open_disk()
1244 	ll->load_ie = disk_ll_load_ie;  in sm_ll_open_disk()
1245 	ll->save_ie = disk_ll_save_ie;  in sm_ll_open_disk()
1246 	ll->init_index = disk_ll_init_index;  in sm_ll_open_disk()
1247 	ll->open_index = disk_ll_open;  in sm_ll_open_disk()
1248 	ll->max_entries = disk_ll_max_entries;  in sm_ll_open_disk()
1249 	ll->commit = disk_ll_commit;  in sm_ll_open_disk()
1251 	ll->nr_blocks = le64_to_cpu(smr->nr_blocks);  in sm_ll_open_disk()
1252 	ll->nr_allocated = le64_to_cpu(smr->nr_allocated);  in sm_ll_open_disk()
1253 	ll->bitmap_root = le64_to_cpu(smr->bitmap_root);  in sm_ll_open_disk()
1254 	ll->ref_count_root = le64_to_cpu(smr->ref_count_root);  in sm_ll_open_disk()
1256 	return ll->open_index(ll);  in sm_ll_open_disk()