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 	b = do_div(index, ll->entries_per_block);  in sm_ll_lookup_bitmap()
287 	r = ll->load_ie(ll, index, &ie_disk);  in sm_ll_lookup_bitmap()
291 	r = dm_tm_read_lock(ll->tm, le64_to_cpu(ie_disk.blocknr),  in sm_ll_lookup_bitmap()
298 	dm_tm_unlock(ll->tm, blk);  in sm_ll_lookup_bitmap()
303 static int sm_ll_lookup_big_ref_count(struct ll_disk *ll, dm_block_t b,  in sm_ll_lookup_big_ref_count()  argument
309 	r = dm_btree_lookup(&ll->ref_count_info, ll->ref_count_root, &b, &le_rc);  in sm_ll_lookup_big_ref_count()
318 int sm_ll_lookup(struct ll_disk *ll, dm_block_t b, uint32_t *result)  in sm_ll_lookup()  argument
320 	int r = sm_ll_lookup_bitmap(ll, b, result);  in sm_ll_lookup()
328 	return sm_ll_lookup_big_ref_count(ll, b, result);  in sm_ll_lookup()
331 int sm_ll_find_free_block(struct ll_disk *ll, dm_block_t begin,  in sm_ll_find_free_block()  argument
337 	dm_block_t index_end = dm_sector_div_up(end, ll->entries_per_block);  in sm_ll_find_free_block()
342 	begin = do_div(index_begin, ll->entries_per_block);  in sm_ll_find_free_block()
343 	end = do_div(end, ll->entries_per_block);  in sm_ll_find_free_block()
345 		end = ll->entries_per_block;  in sm_ll_find_free_block()
352 		r = ll->load_ie(ll, i, &ie_disk);  in sm_ll_find_free_block()
359 		r = dm_tm_read_lock(ll->tm, le64_to_cpu(ie_disk.blocknr),  in sm_ll_find_free_block()
364 		bit_end = (i == index_end - 1) ?  end : ll->entries_per_block;  in sm_ll_find_free_block()
374 			dm_tm_unlock(ll->tm, blk);  in sm_ll_find_free_block()
378 		dm_tm_unlock(ll->tm, blk);  in sm_ll_find_free_block()
380 		*result = i * ll->entries_per_block + (dm_block_t) position;  in sm_ll_find_free_block()
416 int sm_ll_insert(struct ll_disk *ll, dm_block_t b,  in sm_ll_insert()  argument
427 	bit = do_div(index, ll->entries_per_block);  in sm_ll_insert()
428 	r = ll->load_ie(ll, index, &ie_disk);  in sm_ll_insert()
432 	r = dm_tm_shadow_block(ll->tm, le64_to_cpu(ie_disk.blocknr),  in sm_ll_insert()
443 		r = sm_ll_lookup_big_ref_count(ll, b, &old);  in sm_ll_insert()
445 			dm_tm_unlock(ll->tm, nb);  in sm_ll_insert()
451 		dm_tm_unlock(ll->tm, nb);  in sm_ll_insert()
457 		dm_tm_unlock(ll->tm, nb);  in sm_ll_insert()
460 			r = dm_btree_remove(&ll->ref_count_info,  in sm_ll_insert()
461 					    ll->ref_count_root,  in sm_ll_insert()
462 					    &b, &ll->ref_count_root);  in sm_ll_insert()
471 		dm_tm_unlock(ll->tm, nb);  in sm_ll_insert()
474 		r = dm_btree_insert(&ll->ref_count_info, ll->ref_count_root,  in sm_ll_insert()
475 				    &b, &le_rc, &ll->ref_count_root);  in sm_ll_insert()
484 		ll->nr_allocated++;  in sm_ll_insert()
491 		ll->nr_allocated--;  in sm_ll_insert()
497 	return ll->save_ie(ll, index, &ie_disk);  in sm_ll_insert()
521 static inline void exit_inc_context(struct ll_disk *ll, struct inc_context *ic)  in exit_inc_context()  argument
524 		dm_tm_unlock(ll->tm, ic->bitmap_block);  in exit_inc_context()
526 		dm_tm_unlock(ll->tm, ic->overflow_leaf);  in exit_inc_context()
529 static inline void reset_inc_context(struct ll_disk *ll, struct inc_context *ic)  in reset_inc_context()  argument
531 	exit_inc_context(ll, ic);  in reset_inc_context()
545 static int __sm_ll_inc_overflow(struct ll_disk *ll, dm_block_t b, struct inc_context *ic)  in __sm_ll_inc_overflow()  argument
557 	reset_inc_context(ll, ic);  in __sm_ll_inc_overflow()
559 	r = btree_get_overwrite_leaf(&ll->ref_count_info, ll->ref_count_root,  in __sm_ll_inc_overflow()
560 				     b, &index, &ll->ref_count_root, &ic->overflow_leaf);  in __sm_ll_inc_overflow()
578 static int sm_ll_inc_overflow(struct ll_disk *ll, dm_block_t b, struct inc_context *ic)  in sm_ll_inc_overflow()  argument
600 	return __sm_ll_inc_overflow(ll, b, ic);  in sm_ll_inc_overflow()
603 static inline int shadow_bitmap(struct ll_disk *ll, struct inc_context *ic)  in shadow_bitmap()  argument
606 	r = dm_tm_shadow_block(ll->tm, le64_to_cpu(ic->ie_disk.blocknr),  in shadow_bitmap()
622 static inline int ensure_bitmap(struct ll_disk *ll, struct inc_context *ic)  in ensure_bitmap()  argument
625 		int r = dm_bm_write_lock(dm_tm_get_bm(ll->tm), le64_to_cpu(ic->ie_disk.blocknr),  in ensure_bitmap()
640 static inline int sm_ll_inc_bitmap(struct ll_disk *ll, dm_block_t b,  in sm_ll_inc_bitmap()  argument
655 		r = ensure_bitmap(ll, ic);  in sm_ll_inc_bitmap()
665 			ll->nr_allocated++;  in sm_ll_inc_bitmap()
679 			reset_inc_context(ll, ic);  in sm_ll_inc_bitmap()
683 			r = dm_btree_insert(&ll->ref_count_info, ll->ref_count_root,  in sm_ll_inc_bitmap()
684 					    &b, &le_rc, &ll->ref_count_root);  in sm_ll_inc_bitmap()
695 			r = sm_ll_inc_overflow(ll, b, ic);  in sm_ll_inc_bitmap()
709 static int __sm_ll_inc(struct ll_disk *ll, dm_block_t b, dm_block_t e,  in __sm_ll_inc()  argument
719 	bit = do_div(index, ll->entries_per_block);  in __sm_ll_inc()
720 	r = ll->load_ie(ll, index, &ic.ie_disk);  in __sm_ll_inc()
724 	r = shadow_bitmap(ll, &ic);  in __sm_ll_inc()
728 	bit_end = min(bit + (e - b), (dm_block_t) ll->entries_per_block);  in __sm_ll_inc()
729 	r = sm_ll_inc_bitmap(ll, b, bit, bit_end, nr_allocations, new_b, &ic);  in __sm_ll_inc()
731 	exit_inc_context(ll, &ic);  in __sm_ll_inc()
736 	return ll->save_ie(ll, index, &ic.ie_disk);  in __sm_ll_inc()
739 int sm_ll_inc(struct ll_disk *ll, dm_block_t b, dm_block_t e,  in sm_ll_inc()  argument
744 		int r = __sm_ll_inc(ll, b, e, nr_allocations, &b);  in sm_ll_inc()
754 static int __sm_ll_del_overflow(struct ll_disk *ll, dm_block_t b,  in __sm_ll_del_overflow()  argument
757 	reset_inc_context(ll, ic);  in __sm_ll_del_overflow()
758 	return dm_btree_remove(&ll->ref_count_info, ll->ref_count_root,  in __sm_ll_del_overflow()
759 			       &b, &ll->ref_count_root);  in __sm_ll_del_overflow()
762 static int __sm_ll_dec_overflow(struct ll_disk *ll, dm_block_t b,  in __sm_ll_dec_overflow()  argument
771 	reset_inc_context(ll, ic);  in __sm_ll_dec_overflow()
772 	r = btree_get_overwrite_leaf(&ll->ref_count_info, ll->ref_count_root,  in __sm_ll_dec_overflow()
773 				     b, &index, &ll->ref_count_root, &ic->overflow_leaf);  in __sm_ll_dec_overflow()
789 		return __sm_ll_del_overflow(ll, b, ic);  in __sm_ll_dec_overflow()
797 static int sm_ll_dec_overflow(struct ll_disk *ll, dm_block_t b,  in sm_ll_dec_overflow()  argument
821 				return __sm_ll_del_overflow(ll, b, ic);  in sm_ll_dec_overflow()
827 	return __sm_ll_dec_overflow(ll, b, ic, old_rc);  in sm_ll_dec_overflow()
833 static inline int sm_ll_dec_bitmap(struct ll_disk *ll, dm_block_t b,  in sm_ll_dec_bitmap()  argument
847 		r = ensure_bitmap(ll, ic);  in sm_ll_dec_bitmap()
861 			ll->nr_allocated--;  in sm_ll_dec_bitmap()
873 			r = sm_ll_dec_overflow(ll, b, ic, &old);  in sm_ll_dec_bitmap()
878 				r = ensure_bitmap(ll, ic);  in sm_ll_dec_bitmap()
892 static int __sm_ll_dec(struct ll_disk *ll, dm_block_t b, dm_block_t e,  in __sm_ll_dec()  argument
902 	bit = do_div(index, ll->entries_per_block);  in __sm_ll_dec()
903 	r = ll->load_ie(ll, index, &ic.ie_disk);  in __sm_ll_dec()
907 	r = shadow_bitmap(ll, &ic);  in __sm_ll_dec()
911 	bit_end = min(bit + (e - b), (dm_block_t) ll->entries_per_block);  in __sm_ll_dec()
912 	r = sm_ll_dec_bitmap(ll, b, bit, bit_end, &ic, nr_allocations, new_b);  in __sm_ll_dec()
913 	exit_inc_context(ll, &ic);  in __sm_ll_dec()
918 	return ll->save_ie(ll, index, &ic.ie_disk);  in __sm_ll_dec()
921 int sm_ll_dec(struct ll_disk *ll, dm_block_t b, dm_block_t e,  in sm_ll_dec()  argument
926 		int r = __sm_ll_dec(ll, b, e, nr_allocations, &b);  in sm_ll_dec()
936 int sm_ll_commit(struct ll_disk *ll)  in sm_ll_commit()  argument
940 	if (ll->bitmap_index_changed) {  in sm_ll_commit()
941 		r = ll->commit(ll);  in sm_ll_commit()
943 			ll->bitmap_index_changed = false;  in sm_ll_commit()
951 static int metadata_ll_load_ie(struct ll_disk *ll, dm_block_t index,  in metadata_ll_load_ie()  argument
954 	memcpy(ie, ll->mi_le.index + index, sizeof(*ie));  in metadata_ll_load_ie()
958 static int metadata_ll_save_ie(struct ll_disk *ll, dm_block_t index,  in metadata_ll_save_ie()  argument
961 	ll->bitmap_index_changed = true;  in metadata_ll_save_ie()
962 	memcpy(ll->mi_le.index + index, ie, sizeof(*ie));  in metadata_ll_save_ie()
966 static int metadata_ll_init_index(struct ll_disk *ll)  in metadata_ll_init_index()  argument
971 	r = dm_tm_new_block(ll->tm, &index_validator, &b);  in metadata_ll_init_index()
975 	ll->bitmap_root = dm_block_location(b);  in metadata_ll_init_index()
977 	dm_tm_unlock(ll->tm, b);  in metadata_ll_init_index()
982 static int metadata_ll_open(struct ll_disk *ll)  in metadata_ll_open()  argument
987 	r = dm_tm_read_lock(ll->tm, ll->bitmap_root,  in metadata_ll_open()
992 	memcpy(&ll->mi_le, dm_block_data(block), sizeof(ll->mi_le));  in metadata_ll_open()
993 	dm_tm_unlock(ll->tm, block);  in metadata_ll_open()
998 static dm_block_t metadata_ll_max_entries(struct ll_disk *ll)  in metadata_ll_max_entries()  argument
1003 static int metadata_ll_commit(struct ll_disk *ll)  in metadata_ll_commit()  argument
1008 	r = dm_tm_shadow_block(ll->tm, ll->bitmap_root, &index_validator, &b, &inc);  in metadata_ll_commit()
1012 	memcpy(dm_block_data(b), &ll->mi_le, sizeof(ll->mi_le));  in metadata_ll_commit()
1013 	ll->bitmap_root = dm_block_location(b);  in metadata_ll_commit()
1015 	dm_tm_unlock(ll->tm, b);  in metadata_ll_commit()
1020 int sm_ll_new_metadata(struct ll_disk *ll, struct dm_transaction_manager *tm)  in sm_ll_new_metadata()  argument
1024 	r = sm_ll_init(ll, tm);  in sm_ll_new_metadata()
1028 	ll->load_ie = metadata_ll_load_ie;  in sm_ll_new_metadata()
1029 	ll->save_ie = metadata_ll_save_ie;  in sm_ll_new_metadata()
1030 	ll->init_index = metadata_ll_init_index;  in sm_ll_new_metadata()
1031 	ll->open_index = metadata_ll_open;  in sm_ll_new_metadata()
1032 	ll->max_entries = metadata_ll_max_entries;  in sm_ll_new_metadata()
1033 	ll->commit = metadata_ll_commit;  in sm_ll_new_metadata()
1035 	ll->nr_blocks = 0;  in sm_ll_new_metadata()
1036 	ll->nr_allocated = 0;  in sm_ll_new_metadata()
1038 	r = ll->init_index(ll);  in sm_ll_new_metadata()
1042 	r = dm_btree_empty(&ll->ref_count_info, &ll->ref_count_root);  in sm_ll_new_metadata()
1049 int sm_ll_open_metadata(struct ll_disk *ll, struct dm_transaction_manager *tm,  in sm_ll_open_metadata()  argument
1066 	r = sm_ll_init(ll, tm);  in sm_ll_open_metadata()
1070 	ll->load_ie = metadata_ll_load_ie;  in sm_ll_open_metadata()
1071 	ll->save_ie = metadata_ll_save_ie;  in sm_ll_open_metadata()
1072 	ll->init_index = metadata_ll_init_index;  in sm_ll_open_metadata()
1073 	ll->open_index = metadata_ll_open;  in sm_ll_open_metadata()
1074 	ll->max_entries = metadata_ll_max_entries;  in sm_ll_open_metadata()
1075 	ll->commit = metadata_ll_commit;  in sm_ll_open_metadata()
1077 	ll->nr_blocks = le64_to_cpu(smr.nr_blocks);  in sm_ll_open_metadata()
1078 	ll->nr_allocated = le64_to_cpu(smr.nr_allocated);  in sm_ll_open_metadata()
1079 	ll->bitmap_root = le64_to_cpu(smr.bitmap_root);  in sm_ll_open_metadata()
1080 	ll->ref_count_root = le64_to_cpu(smr.ref_count_root);  in sm_ll_open_metadata()
1082 	return ll->open_index(ll);  in sm_ll_open_metadata()
1087 static inline int ie_cache_writeback(struct ll_disk *ll, struct ie_cache *iec)  in ie_cache_writeback()  argument
1091 	return dm_btree_insert(&ll->bitmap_info, ll->bitmap_root,  in ie_cache_writeback()
1092 			       &iec->index, &iec->ie, &ll->bitmap_root);  in ie_cache_writeback()
1100 static int disk_ll_load_ie(struct ll_disk *ll, dm_block_t index,  in disk_ll_load_ie()  argument
1105 	struct ie_cache *iec = ll->ie_cache + h;  in disk_ll_load_ie()
1114 			r = ie_cache_writeback(ll, iec);  in disk_ll_load_ie()
1120 	r = dm_btree_lookup(&ll->bitmap_info, ll->bitmap_root, &index, ie);  in disk_ll_load_ie()
1131 static int disk_ll_save_ie(struct ll_disk *ll, dm_block_t index,  in disk_ll_save_ie()  argument
1136 	struct ie_cache *iec = ll->ie_cache + h;  in disk_ll_save_ie()
1138 	ll->bitmap_index_changed = true;  in disk_ll_save_ie()
1147 			r = ie_cache_writeback(ll, iec);  in disk_ll_save_ie()
1160 static int disk_ll_init_index(struct ll_disk *ll)  in disk_ll_init_index()  argument
1164 		struct ie_cache *iec = ll->ie_cache + i;  in disk_ll_init_index()
1168 	return dm_btree_empty(&ll->bitmap_info, &ll->bitmap_root);  in disk_ll_init_index()
1171 static int disk_ll_open(struct ll_disk *ll)  in disk_ll_open()  argument
1176 static dm_block_t disk_ll_max_entries(struct ll_disk *ll)  in disk_ll_max_entries()  argument
1181 static int disk_ll_commit(struct ll_disk *ll)  in disk_ll_commit()  argument
1187 		struct ie_cache *iec = ll->ie_cache + i;  in disk_ll_commit()
1189 			r = ie_cache_writeback(ll, iec);  in disk_ll_commit()
1195 int sm_ll_new_disk(struct ll_disk *ll, struct dm_transaction_manager *tm)  in sm_ll_new_disk()  argument
1199 	r = sm_ll_init(ll, tm);  in sm_ll_new_disk()
1203 	ll->load_ie = disk_ll_load_ie;  in sm_ll_new_disk()
1204 	ll->save_ie = disk_ll_save_ie;  in sm_ll_new_disk()
1205 	ll->init_index = disk_ll_init_index;  in sm_ll_new_disk()
1206 	ll->open_index = disk_ll_open;  in sm_ll_new_disk()
1207 	ll->max_entries = disk_ll_max_entries;  in sm_ll_new_disk()
1208 	ll->commit = disk_ll_commit;  in sm_ll_new_disk()
1210 	ll->nr_blocks = 0;  in sm_ll_new_disk()
1211 	ll->nr_allocated = 0;  in sm_ll_new_disk()
1213 	r = ll->init_index(ll);  in sm_ll_new_disk()
1217 	r = dm_btree_empty(&ll->ref_count_info, &ll->ref_count_root);  in sm_ll_new_disk()
1224 int sm_ll_open_disk(struct ll_disk *ll, struct dm_transaction_manager *tm,  in sm_ll_open_disk()  argument
1235 	r = sm_ll_init(ll, tm);  in sm_ll_open_disk()
1239 	ll->load_ie = disk_ll_load_ie;  in sm_ll_open_disk()
1240 	ll->save_ie = disk_ll_save_ie;  in sm_ll_open_disk()
1241 	ll->init_index = disk_ll_init_index;  in sm_ll_open_disk()
1242 	ll->open_index = disk_ll_open;  in sm_ll_open_disk()
1243 	ll->max_entries = disk_ll_max_entries;  in sm_ll_open_disk()
1244 	ll->commit = disk_ll_commit;  in sm_ll_open_disk()
1246 	ll->nr_blocks = le64_to_cpu(smr->nr_blocks);  in sm_ll_open_disk()
1247 	ll->nr_allocated = le64_to_cpu(smr->nr_allocated);  in sm_ll_open_disk()
1248 	ll->bitmap_root = le64_to_cpu(smr->bitmap_root);  in sm_ll_open_disk()
1249 	ll->ref_count_root = le64_to_cpu(smr->ref_count_root);  in sm_ll_open_disk()
1251 	return ll->open_index(ll);  in sm_ll_open_disk()