88 				    struct extent_buffer *leaf,
386 	struct extent_buffer *leaf;  in caching_thread()  local
427 	leaf = path->nodes[0];  in caching_thread()
428 	nritems = btrfs_header_nritems(leaf);  in caching_thread()
437 			btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);  in caching_thread()
458 			leaf = path->nodes[0];  in caching_thread()
459 			nritems = btrfs_header_nritems(leaf);  in caching_thread()
751 	struct extent_buffer *leaf;  in btrfs_lookup_extent_info()  local
802 		leaf = path->nodes[0];  in btrfs_lookup_extent_info()
803 		item_size = btrfs_item_size_nr(leaf, path->slots[0]);  in btrfs_lookup_extent_info()
805 			ei = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_lookup_extent_info()
807 			num_refs = btrfs_extent_refs(leaf, ei);  in btrfs_lookup_extent_info()
808 			extent_flags = btrfs_extent_flags(leaf, ei);  in btrfs_lookup_extent_info()
813 			ei0 = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_lookup_extent_info()
815 			num_refs = btrfs_extent_refs_v0(leaf, ei0);  in btrfs_lookup_extent_info()
989 	struct extent_buffer *leaf;  in convert_extent_item_v0()  local
996 	leaf = path->nodes[0];  in convert_extent_item_v0()
997 	BUG_ON(btrfs_item_size_nr(leaf, path->slots[0]) != sizeof(*ei0));  in convert_extent_item_v0()
999 	btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);  in convert_extent_item_v0()
1000 	ei0 = btrfs_item_ptr(leaf, path->slots[0],  in convert_extent_item_v0()
1002 	refs = btrfs_extent_refs_v0(leaf, ei0);  in convert_extent_item_v0()
1006 			if (path->slots[0] >= btrfs_header_nritems(leaf)) {  in convert_extent_item_v0()
1011 				leaf = path->nodes[0];  in convert_extent_item_v0()
1013 			btrfs_item_key_to_cpu(leaf, &found_key,  in convert_extent_item_v0()
1020 			ref0 = btrfs_item_ptr(leaf, path->slots[0],  in convert_extent_item_v0()
1022 			owner = btrfs_ref_objectid_v0(leaf, ref0);  in convert_extent_item_v0()
1040 	leaf = path->nodes[0];  in convert_extent_item_v0()
1041 	item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_extent_item);  in convert_extent_item_v0()
1042 	btrfs_set_extent_refs(leaf, item, refs);  in convert_extent_item_v0()
1044 	btrfs_set_extent_generation(leaf, item, 0);  in convert_extent_item_v0()
1046 		btrfs_set_extent_flags(leaf, item,  in convert_extent_item_v0()
1051 		memset_extent_buffer(leaf, 0, (unsigned long)bi, sizeof(*bi));  in convert_extent_item_v0()
1052 		btrfs_set_tree_block_level(leaf, bi, (int)owner);  in convert_extent_item_v0()
1054 		btrfs_set_extent_flags(leaf, item, BTRFS_EXTENT_FLAG_DATA);  in convert_extent_item_v0()
1056 	btrfs_mark_buffer_dirty(leaf);  in convert_extent_item_v0()
1077 static u64 hash_extent_data_ref_item(struct extent_buffer *leaf,  in hash_extent_data_ref_item()  argument
1080 	return hash_extent_data_ref(btrfs_extent_data_ref_root(leaf, ref),  in hash_extent_data_ref_item()
1081 				    btrfs_extent_data_ref_objectid(leaf, ref),  in hash_extent_data_ref_item()
1082 				    btrfs_extent_data_ref_offset(leaf, ref));  in hash_extent_data_ref_item()
1085 static int match_extent_data_ref(struct extent_buffer *leaf,  in match_extent_data_ref()  argument
1089 	if (btrfs_extent_data_ref_root(leaf, ref) != root_objectid ||  in match_extent_data_ref()
1090 	    btrfs_extent_data_ref_objectid(leaf, ref) != owner ||  in match_extent_data_ref()
1091 	    btrfs_extent_data_ref_offset(leaf, ref) != offset)  in match_extent_data_ref()
1105 	struct extent_buffer *leaf;  in lookup_extent_data_ref()  local
1145 	leaf = path->nodes[0];  in lookup_extent_data_ref()
1146 	nritems = btrfs_header_nritems(leaf);  in lookup_extent_data_ref()
1155 			leaf = path->nodes[0];  in lookup_extent_data_ref()
1156 			nritems = btrfs_header_nritems(leaf);  in lookup_extent_data_ref()
1160 		btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);  in lookup_extent_data_ref()
1165 		ref = btrfs_item_ptr(leaf, path->slots[0],  in lookup_extent_data_ref()
1168 		if (match_extent_data_ref(leaf, ref, root_objectid,  in lookup_extent_data_ref()
1191 	struct extent_buffer *leaf;  in insert_extent_data_ref()  local
1212 	leaf = path->nodes[0];  in insert_extent_data_ref()
1215 		ref = btrfs_item_ptr(leaf, path->slots[0],  in insert_extent_data_ref()
1218 			btrfs_set_shared_data_ref_count(leaf, ref, refs_to_add);  in insert_extent_data_ref()
1220 			num_refs = btrfs_shared_data_ref_count(leaf, ref);  in insert_extent_data_ref()
1222 			btrfs_set_shared_data_ref_count(leaf, ref, num_refs);  in insert_extent_data_ref()
1227 			ref = btrfs_item_ptr(leaf, path->slots[0],  in insert_extent_data_ref()
1229 			if (match_extent_data_ref(leaf, ref, root_objectid,  in insert_extent_data_ref()
1239 			leaf = path->nodes[0];  in insert_extent_data_ref()
1241 		ref = btrfs_item_ptr(leaf, path->slots[0],  in insert_extent_data_ref()
1244 			btrfs_set_extent_data_ref_root(leaf, ref,  in insert_extent_data_ref()
1246 			btrfs_set_extent_data_ref_objectid(leaf, ref, owner);  in insert_extent_data_ref()
1247 			btrfs_set_extent_data_ref_offset(leaf, ref, offset);  in insert_extent_data_ref()
1248 			btrfs_set_extent_data_ref_count(leaf, ref, refs_to_add);  in insert_extent_data_ref()
1250 			num_refs = btrfs_extent_data_ref_count(leaf, ref);  in insert_extent_data_ref()
1252 			btrfs_set_extent_data_ref_count(leaf, ref, num_refs);  in insert_extent_data_ref()
1255 	btrfs_mark_buffer_dirty(leaf);  in insert_extent_data_ref()
1270 	struct extent_buffer *leaf;  in remove_extent_data_ref()  local
1274 	leaf = path->nodes[0];  in remove_extent_data_ref()
1275 	btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);  in remove_extent_data_ref()
1278 		ref1 = btrfs_item_ptr(leaf, path->slots[0],  in remove_extent_data_ref()
1280 		num_refs = btrfs_extent_data_ref_count(leaf, ref1);  in remove_extent_data_ref()
1282 		ref2 = btrfs_item_ptr(leaf, path->slots[0],  in remove_extent_data_ref()
1284 		num_refs = btrfs_shared_data_ref_count(leaf, ref2);  in remove_extent_data_ref()
1288 		ref0 = btrfs_item_ptr(leaf, path->slots[0],  in remove_extent_data_ref()
1290 		num_refs = btrfs_ref_count_v0(leaf, ref0);  in remove_extent_data_ref()
1304 			btrfs_set_extent_data_ref_count(leaf, ref1, num_refs);  in remove_extent_data_ref()
1306 			btrfs_set_shared_data_ref_count(leaf, ref2, num_refs);  in remove_extent_data_ref()
1310 			ref0 = btrfs_item_ptr(leaf, path->slots[0],  in remove_extent_data_ref()
1312 			btrfs_set_ref_count_v0(leaf, ref0, num_refs);  in remove_extent_data_ref()
1315 		btrfs_mark_buffer_dirty(leaf);  in remove_extent_data_ref()
1325 	struct extent_buffer *leaf;  in extent_data_ref_count()  local
1330 	leaf = path->nodes[0];  in extent_data_ref_count()
1331 	btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);  in extent_data_ref_count()
1333 		if (btrfs_extent_inline_ref_type(leaf, iref) ==  in extent_data_ref_count()
1336 			num_refs = btrfs_extent_data_ref_count(leaf, ref1);  in extent_data_ref_count()
1339 			num_refs = btrfs_shared_data_ref_count(leaf, ref2);  in extent_data_ref_count()
1342 		ref1 = btrfs_item_ptr(leaf, path->slots[0],  in extent_data_ref_count()
1344 		num_refs = btrfs_extent_data_ref_count(leaf, ref1);  in extent_data_ref_count()
1346 		ref2 = btrfs_item_ptr(leaf, path->slots[0],  in extent_data_ref_count()
1348 		num_refs = btrfs_shared_data_ref_count(leaf, ref2);  in extent_data_ref_count()
1352 		ref0 = btrfs_item_ptr(leaf, path->slots[0],  in extent_data_ref_count()
1354 		num_refs = btrfs_ref_count_v0(leaf, ref0);  in extent_data_ref_count()
1479 	struct extent_buffer *leaf;  in lookup_inline_extent_backref()  local
1553 	leaf = path->nodes[0];  in lookup_inline_extent_backref()
1554 	item_size = btrfs_item_size_nr(leaf, path->slots[0]);  in lookup_inline_extent_backref()
1567 		leaf = path->nodes[0];  in lookup_inline_extent_backref()
1568 		item_size = btrfs_item_size_nr(leaf, path->slots[0]);  in lookup_inline_extent_backref()
1573 	ei = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_extent_item);  in lookup_inline_extent_backref()
1574 	flags = btrfs_extent_flags(leaf, ei);  in lookup_inline_extent_backref()
1591 		type = btrfs_extent_inline_ref_type(leaf, iref);  in lookup_inline_extent_backref()
1602 			if (match_extent_data_ref(leaf, dref, root_objectid,  in lookup_inline_extent_backref()
1607 			if (hash_extent_data_ref_item(leaf, dref) <  in lookup_inline_extent_backref()
1612 			ref_offset = btrfs_extent_inline_ref_offset(leaf, iref);  in lookup_inline_extent_backref()
1670 	struct extent_buffer *leaf;  in setup_inline_extent_backref()  local
1679 	leaf = path->nodes[0];  in setup_inline_extent_backref()
1680 	ei = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_extent_item);  in setup_inline_extent_backref()
1688 	ei = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_extent_item);  in setup_inline_extent_backref()
1689 	refs = btrfs_extent_refs(leaf, ei);  in setup_inline_extent_backref()
1691 	btrfs_set_extent_refs(leaf, ei, refs);  in setup_inline_extent_backref()
1693 		__run_delayed_extent_op(extent_op, leaf, ei);  in setup_inline_extent_backref()
1696 	end = (unsigned long)ei + btrfs_item_size_nr(leaf, path->slots[0]);  in setup_inline_extent_backref()
1698 		memmove_extent_buffer(leaf, ptr + size, ptr,  in setup_inline_extent_backref()
1702 	btrfs_set_extent_inline_ref_type(leaf, iref, type);  in setup_inline_extent_backref()
1706 		btrfs_set_extent_data_ref_root(leaf, dref, root_objectid);  in setup_inline_extent_backref()
1707 		btrfs_set_extent_data_ref_objectid(leaf, dref, owner);  in setup_inline_extent_backref()
1708 		btrfs_set_extent_data_ref_offset(leaf, dref, offset);  in setup_inline_extent_backref()
1709 		btrfs_set_extent_data_ref_count(leaf, dref, refs_to_add);  in setup_inline_extent_backref()
1713 		btrfs_set_shared_data_ref_count(leaf, sref, refs_to_add);  in setup_inline_extent_backref()
1714 		btrfs_set_extent_inline_ref_offset(leaf, iref, parent);  in setup_inline_extent_backref()
1716 		btrfs_set_extent_inline_ref_offset(leaf, iref, parent);  in setup_inline_extent_backref()
1718 		btrfs_set_extent_inline_ref_offset(leaf, iref, root_objectid);  in setup_inline_extent_backref()
1720 	btrfs_mark_buffer_dirty(leaf);  in setup_inline_extent_backref()
1762 	struct extent_buffer *leaf;  in update_inline_extent_backref()  local
1773 	leaf = path->nodes[0];  in update_inline_extent_backref()
1774 	ei = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_extent_item);  in update_inline_extent_backref()
1775 	refs = btrfs_extent_refs(leaf, ei);  in update_inline_extent_backref()
1778 	btrfs_set_extent_refs(leaf, ei, refs);  in update_inline_extent_backref()
1780 		__run_delayed_extent_op(extent_op, leaf, ei);  in update_inline_extent_backref()
1782 	type = btrfs_extent_inline_ref_type(leaf, iref);  in update_inline_extent_backref()
1786 		refs = btrfs_extent_data_ref_count(leaf, dref);  in update_inline_extent_backref()
1789 		refs = btrfs_shared_data_ref_count(leaf, sref);  in update_inline_extent_backref()
1800 			btrfs_set_extent_data_ref_count(leaf, dref, refs);  in update_inline_extent_backref()
1802 			btrfs_set_shared_data_ref_count(leaf, sref, refs);  in update_inline_extent_backref()
1806 		item_size = btrfs_item_size_nr(leaf, path->slots[0]);  in update_inline_extent_backref()
1810 			memmove_extent_buffer(leaf, ptr, ptr + size,  in update_inline_extent_backref()
1815 	btrfs_mark_buffer_dirty(leaf);  in update_inline_extent_backref()
1978 	struct extent_buffer *leaf;  in __btrfs_inc_extent_ref()  local
2007 		leaf = path->nodes[0];  in __btrfs_inc_extent_ref()
2008 		btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);  in __btrfs_inc_extent_ref()
2009 		item = btrfs_item_ptr(leaf, path->slots[0],  in __btrfs_inc_extent_ref()
2011 		if (btrfs_extent_refs(leaf, item) > (u64)refs_to_add)  in __btrfs_inc_extent_ref()
2025 	leaf = path->nodes[0];  in __btrfs_inc_extent_ref()
2026 	btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);  in __btrfs_inc_extent_ref()
2027 	item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_extent_item);  in __btrfs_inc_extent_ref()
2028 	refs = btrfs_extent_refs(leaf, item);  in __btrfs_inc_extent_ref()
2031 	btrfs_set_extent_refs(leaf, item, refs + refs_to_add);  in __btrfs_inc_extent_ref()
2033 		__run_delayed_extent_op(extent_op, leaf, item);  in __btrfs_inc_extent_ref()
2035 	btrfs_mark_buffer_dirty(leaf);  in __btrfs_inc_extent_ref()
2108 				    struct extent_buffer *leaf,  in __run_delayed_extent_op()  argument
2111 	u64 flags = btrfs_extent_flags(leaf, ei);  in __run_delayed_extent_op()
2114 		btrfs_set_extent_flags(leaf, ei, flags);  in __run_delayed_extent_op()
2121 		btrfs_set_tree_block_key(leaf, bi, &extent_op->key);  in __run_delayed_extent_op()
2133 	struct extent_buffer *leaf;  in run_delayed_extent_op()  local
2194 	leaf = path->nodes[0];  in run_delayed_extent_op()
2195 	item_size = btrfs_item_size_nr(leaf, path->slots[0]);  in run_delayed_extent_op()
2204 		leaf = path->nodes[0];  in run_delayed_extent_op()
2205 		item_size = btrfs_item_size_nr(leaf, path->slots[0]);  in run_delayed_extent_op()
2209 	ei = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_extent_item);  in run_delayed_extent_op()
2210 	__run_delayed_extent_op(extent_op, leaf, ei);  in run_delayed_extent_op()
2212 	btrfs_mark_buffer_dirty(leaf);  in run_delayed_extent_op()
2972 	struct extent_buffer *leaf;  in check_committed_ref()  local
2994 	leaf = path->nodes[0];  in check_committed_ref()
2995 	btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);  in check_committed_ref()
3001 	item_size = btrfs_item_size_nr(leaf, path->slots[0]);  in check_committed_ref()
3008 	ei = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_extent_item);  in check_committed_ref()
3014 	if (btrfs_extent_generation(leaf, ei) <=  in check_committed_ref()
3019 	if (btrfs_extent_inline_ref_type(leaf, iref) !=  in check_committed_ref()
3024 	if (btrfs_extent_refs(leaf, ei) !=  in check_committed_ref()
3025 	    btrfs_extent_data_ref_count(leaf, ref) ||  in check_committed_ref()
3026 	    btrfs_extent_data_ref_root(leaf, ref) !=  in check_committed_ref()
3028 	    btrfs_extent_data_ref_objectid(leaf, ref) != objectid ||  in check_committed_ref()
3029 	    btrfs_extent_data_ref_offset(leaf, ref) != offset)  in check_committed_ref()
3168 	struct extent_buffer *leaf;  in write_one_cache_group()  local
3177 	leaf = path->nodes[0];  in write_one_cache_group()
3178 	bi = btrfs_item_ptr_offset(leaf, path->slots[0]);  in write_one_cache_group()
3179 	write_extent_buffer(leaf, &cache->item, bi, sizeof(cache->item));  in write_one_cache_group()
3180 	btrfs_mark_buffer_dirty(leaf);  in write_one_cache_group()
6111 	struct extent_buffer *leaf;  in __btrfs_free_extent()  local
6245 	leaf = path->nodes[0];  in __btrfs_free_extent()
6246 	item_size = btrfs_item_size_nr(leaf, extent_slot);  in __btrfs_free_extent()
6277 		leaf = path->nodes[0];  in __btrfs_free_extent()
6278 		item_size = btrfs_item_size_nr(leaf, extent_slot);  in __btrfs_free_extent()
6282 	ei = btrfs_item_ptr(leaf, extent_slot,  in __btrfs_free_extent()
6289 		WARN_ON(owner_objectid != btrfs_tree_block_level(leaf, bi));  in __btrfs_free_extent()
6292 	refs = btrfs_extent_refs(leaf, ei);  in __btrfs_free_extent()
6305 			__run_delayed_extent_op(extent_op, leaf, ei);  in __btrfs_free_extent()
6313 			btrfs_set_extent_refs(leaf, ei, refs);  in __btrfs_free_extent()
6314 			btrfs_mark_buffer_dirty(leaf);  in __btrfs_free_extent()
7262 	struct extent_buffer *leaf;  in alloc_reserved_file_extent()  local
7285 	leaf = path->nodes[0];  in alloc_reserved_file_extent()
7286 	extent_item = btrfs_item_ptr(leaf, path->slots[0],  in alloc_reserved_file_extent()
7288 	btrfs_set_extent_refs(leaf, extent_item, ref_mod);  in alloc_reserved_file_extent()
7289 	btrfs_set_extent_generation(leaf, extent_item, trans->transid);  in alloc_reserved_file_extent()
7290 	btrfs_set_extent_flags(leaf, extent_item,  in alloc_reserved_file_extent()
7294 	btrfs_set_extent_inline_ref_type(leaf, iref, type);  in alloc_reserved_file_extent()
7298 		btrfs_set_extent_inline_ref_offset(leaf, iref, parent);  in alloc_reserved_file_extent()
7299 		btrfs_set_shared_data_ref_count(leaf, ref, ref_mod);  in alloc_reserved_file_extent()
7303 		btrfs_set_extent_data_ref_root(leaf, ref, root_objectid);  in alloc_reserved_file_extent()
7304 		btrfs_set_extent_data_ref_objectid(leaf, ref, owner);  in alloc_reserved_file_extent()
7305 		btrfs_set_extent_data_ref_offset(leaf, ref, offset);  in alloc_reserved_file_extent()
7306 		btrfs_set_extent_data_ref_count(leaf, ref, ref_mod);  in alloc_reserved_file_extent()
7342 	struct extent_buffer *leaf;  in alloc_reserved_tree_block()  local
7368 	leaf = path->nodes[0];  in alloc_reserved_tree_block()
7369 	extent_item = btrfs_item_ptr(leaf, path->slots[0],  in alloc_reserved_tree_block()
7371 	btrfs_set_extent_refs(leaf, extent_item, 1);  in alloc_reserved_tree_block()
7372 	btrfs_set_extent_generation(leaf, extent_item, trans->transid);  in alloc_reserved_tree_block()
7373 	btrfs_set_extent_flags(leaf, extent_item,  in alloc_reserved_tree_block()
7381 		btrfs_set_tree_block_key(leaf, block_info, key);  in alloc_reserved_tree_block()
7382 		btrfs_set_tree_block_level(leaf, block_info, level);  in alloc_reserved_tree_block()
7388 		btrfs_set_extent_inline_ref_type(leaf, iref,  in alloc_reserved_tree_block()
7390 		btrfs_set_extent_inline_ref_offset(leaf, iref, parent);  in alloc_reserved_tree_block()
7392 		btrfs_set_extent_inline_ref_type(leaf, iref,  in alloc_reserved_tree_block()
7394 		btrfs_set_extent_inline_ref_offset(leaf, iref, root_objectid);  in alloc_reserved_tree_block()
7397 	btrfs_mark_buffer_dirty(leaf);  in alloc_reserved_tree_block()
9086 	struct extent_buffer *leaf;  in find_first_block_group()  local
9095 		leaf = path->nodes[0];  in find_first_block_group()
9096 		if (slot >= btrfs_header_nritems(leaf)) {  in find_first_block_group()
9104 		btrfs_item_key_to_cpu(leaf, &found_key, slot);  in find_first_block_group()
9331 	struct extent_buffer *leaf;  in btrfs_read_block_groups()  local
9358 		leaf = path->nodes[0];  in btrfs_read_block_groups()
9359 		btrfs_item_key_to_cpu(leaf, &found_key, path->slots[0]);  in btrfs_read_block_groups()
9383 		read_extent_buffer(leaf, &cache->item,  in btrfs_read_block_groups()
9384 				   btrfs_item_ptr_offset(leaf, path->slots[0]),  in btrfs_read_block_groups()