684 	struct extent_buffer *leaf;  in __btrfs_drop_extents()  local
721 			leaf = path->nodes[0];  in __btrfs_drop_extents()
722 			btrfs_item_key_to_cpu(leaf, &key, path->slots[0] - 1);  in __btrfs_drop_extents()
730 		leaf = path->nodes[0];  in __btrfs_drop_extents()
731 		if (path->slots[0] >= btrfs_header_nritems(leaf)) {  in __btrfs_drop_extents()
741 			leaf = path->nodes[0];  in __btrfs_drop_extents()
745 		btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);  in __btrfs_drop_extents()
758 		fi = btrfs_item_ptr(leaf, path->slots[0],  in __btrfs_drop_extents()
760 		extent_type = btrfs_file_extent_type(leaf, fi);  in __btrfs_drop_extents()
764 			disk_bytenr = btrfs_file_extent_disk_bytenr(leaf, fi);  in __btrfs_drop_extents()
765 			num_bytes = btrfs_file_extent_disk_num_bytes(leaf, fi);  in __btrfs_drop_extents()
766 			extent_offset = btrfs_file_extent_offset(leaf, fi);  in __btrfs_drop_extents()
768 				btrfs_file_extent_num_bytes(leaf, fi);  in __btrfs_drop_extents()
771 				btrfs_file_extent_ram_bytes(leaf, fi);  in __btrfs_drop_extents()
826 			leaf = path->nodes[0];  in __btrfs_drop_extents()
827 			fi = btrfs_item_ptr(leaf, path->slots[0] - 1,  in __btrfs_drop_extents()
829 			btrfs_set_file_extent_num_bytes(leaf, fi,  in __btrfs_drop_extents()
832 			fi = btrfs_item_ptr(leaf, path->slots[0],  in __btrfs_drop_extents()
836 			btrfs_set_file_extent_offset(leaf, fi, extent_offset);  in __btrfs_drop_extents()
837 			btrfs_set_file_extent_num_bytes(leaf, fi,  in __btrfs_drop_extents()
839 			btrfs_mark_buffer_dirty(leaf);  in __btrfs_drop_extents()
875 			btrfs_set_file_extent_offset(leaf, fi, extent_offset);  in __btrfs_drop_extents()
876 			btrfs_set_file_extent_num_bytes(leaf, fi,  in __btrfs_drop_extents()
878 			btrfs_mark_buffer_dirty(leaf);  in __btrfs_drop_extents()
896 			btrfs_set_file_extent_num_bytes(leaf, fi,  in __btrfs_drop_extents()
898 			btrfs_mark_buffer_dirty(leaf);  in __btrfs_drop_extents()
945 			if (path->slots[0] + 1 < btrfs_header_nritems(leaf)) {  in __btrfs_drop_extents()
980 	leaf = path->nodes[0];  in __btrfs_drop_extents()
989 	    btrfs_leaf_free_space(leaf) >=  in __btrfs_drop_extents()
995 		if (!del_nr && path->slots[0] < btrfs_header_nritems(leaf)) {  in __btrfs_drop_extents()
998 			btrfs_item_key_to_cpu(leaf, &slot_key, path->slots[0]);  in __btrfs_drop_extents()
1029 static int extent_mergeable(struct extent_buffer *leaf, int slot,  in extent_mergeable()  argument
1037 	if (slot < 0 || slot >= btrfs_header_nritems(leaf))  in extent_mergeable()
1040 	btrfs_item_key_to_cpu(leaf, &key, slot);  in extent_mergeable()
1044 	fi = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item);  in extent_mergeable()
1045 	if (btrfs_file_extent_type(leaf, fi) != BTRFS_FILE_EXTENT_REG ||  in extent_mergeable()
1046 	    btrfs_file_extent_disk_bytenr(leaf, fi) != bytenr ||  in extent_mergeable()
1047 	    btrfs_file_extent_offset(leaf, fi) != key.offset - orig_offset ||  in extent_mergeable()
1048 	    btrfs_file_extent_compression(leaf, fi) ||  in extent_mergeable()
1049 	    btrfs_file_extent_encryption(leaf, fi) ||  in extent_mergeable()
1050 	    btrfs_file_extent_other_encoding(leaf, fi))  in extent_mergeable()
1053 	extent_end = key.offset + btrfs_file_extent_num_bytes(leaf, fi);  in extent_mergeable()
1074 	struct extent_buffer *leaf;  in btrfs_mark_extent_written()  local
1109 	leaf = path->nodes[0];  in btrfs_mark_extent_written()
1110 	btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);  in btrfs_mark_extent_written()
1117 	fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1119 	if (btrfs_file_extent_type(leaf, fi) != BTRFS_FILE_EXTENT_PREALLOC) {  in btrfs_mark_extent_written()
1124 	extent_end = key.offset + btrfs_file_extent_num_bytes(leaf, fi);  in btrfs_mark_extent_written()
1131 	bytenr = btrfs_file_extent_disk_bytenr(leaf, fi);  in btrfs_mark_extent_written()
1132 	num_bytes = btrfs_file_extent_disk_num_bytes(leaf, fi);  in btrfs_mark_extent_written()
1133 	orig_offset = key.offset - btrfs_file_extent_offset(leaf, fi);  in btrfs_mark_extent_written()
1139 		if (extent_mergeable(leaf, path->slots[0] - 1,  in btrfs_mark_extent_written()
1144 			fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1146 			btrfs_set_file_extent_generation(leaf, fi,  in btrfs_mark_extent_written()
1148 			btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1150 			btrfs_set_file_extent_offset(leaf, fi,  in btrfs_mark_extent_written()
1152 			fi = btrfs_item_ptr(leaf, path->slots[0] - 1,  in btrfs_mark_extent_written()
1154 			btrfs_set_file_extent_generation(leaf, fi,  in btrfs_mark_extent_written()
1156 			btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1158 			btrfs_mark_buffer_dirty(leaf);  in btrfs_mark_extent_written()
1166 		if (extent_mergeable(leaf, path->slots[0] + 1,  in btrfs_mark_extent_written()
1169 			fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1171 			btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1173 			btrfs_set_file_extent_generation(leaf, fi,  in btrfs_mark_extent_written()
1179 			fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1181 			btrfs_set_file_extent_generation(leaf, fi,  in btrfs_mark_extent_written()
1183 			btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1185 			btrfs_set_file_extent_offset(leaf, fi,  in btrfs_mark_extent_written()
1187 			btrfs_mark_buffer_dirty(leaf);  in btrfs_mark_extent_written()
1207 		leaf = path->nodes[0];  in btrfs_mark_extent_written()
1208 		fi = btrfs_item_ptr(leaf, path->slots[0] - 1,  in btrfs_mark_extent_written()
1210 		btrfs_set_file_extent_generation(leaf, fi, trans->transid);  in btrfs_mark_extent_written()
1211 		btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1214 		fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1217 		btrfs_set_file_extent_generation(leaf, fi, trans->transid);  in btrfs_mark_extent_written()
1218 		btrfs_set_file_extent_offset(leaf, fi, split - orig_offset);  in btrfs_mark_extent_written()
1219 		btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1221 		btrfs_mark_buffer_dirty(leaf);  in btrfs_mark_extent_written()
1252 	if (extent_mergeable(leaf, path->slots[0] + 1,  in btrfs_mark_extent_written()
1270 	if (extent_mergeable(leaf, path->slots[0] - 1,  in btrfs_mark_extent_written()
1287 		fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1289 		btrfs_set_file_extent_type(leaf, fi,  in btrfs_mark_extent_written()
1291 		btrfs_set_file_extent_generation(leaf, fi, trans->transid);  in btrfs_mark_extent_written()
1292 		btrfs_mark_buffer_dirty(leaf);  in btrfs_mark_extent_written()
1294 		fi = btrfs_item_ptr(leaf, del_slot - 1,  in btrfs_mark_extent_written()
1296 		btrfs_set_file_extent_type(leaf, fi,  in btrfs_mark_extent_written()
1298 		btrfs_set_file_extent_generation(leaf, fi, trans->transid);  in btrfs_mark_extent_written()
1299 		btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1301 		btrfs_mark_buffer_dirty(leaf);  in btrfs_mark_extent_written()
2314 static int hole_mergeable(struct btrfs_inode *inode, struct extent_buffer *leaf,  in hole_mergeable()  argument
2320 	if (slot < 0 || slot >= btrfs_header_nritems(leaf))  in hole_mergeable()
2323 	btrfs_item_key_to_cpu(leaf, &key, slot);  in hole_mergeable()
2328 	fi = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item);  in hole_mergeable()
2330 	if (btrfs_file_extent_type(leaf, fi) != BTRFS_FILE_EXTENT_REG)  in hole_mergeable()
2333 	if (btrfs_file_extent_disk_bytenr(leaf, fi))  in hole_mergeable()
2338 	if (key.offset + btrfs_file_extent_num_bytes(leaf, fi) == start)  in hole_mergeable()
2349 	struct extent_buffer *leaf;  in fill_holes()  local
2374 	leaf = path->nodes[0];  in fill_holes()
2375 	if (hole_mergeable(inode, leaf, path->slots[0] - 1, offset, end)) {  in fill_holes()
2379 		fi = btrfs_item_ptr(leaf, path->slots[0],  in fill_holes()
2381 		num_bytes = btrfs_file_extent_num_bytes(leaf, fi) +  in fill_holes()
2383 		btrfs_set_file_extent_num_bytes(leaf, fi, num_bytes);  in fill_holes()
2384 		btrfs_set_file_extent_ram_bytes(leaf, fi, num_bytes);  in fill_holes()
2385 		btrfs_set_file_extent_offset(leaf, fi, 0);  in fill_holes()
2386 		btrfs_mark_buffer_dirty(leaf);  in fill_holes()
2390 	if (hole_mergeable(inode, leaf, path->slots[0], offset, end)) {  in fill_holes()
2395 		fi = btrfs_item_ptr(leaf, path->slots[0],  in fill_holes()
2397 		num_bytes = btrfs_file_extent_num_bytes(leaf, fi) + end -  in fill_holes()
2399 		btrfs_set_file_extent_num_bytes(leaf, fi, num_bytes);  in fill_holes()
2400 		btrfs_set_file_extent_ram_bytes(leaf, fi, num_bytes);  in fill_holes()
2401 		btrfs_set_file_extent_offset(leaf, fi, 0);  in fill_holes()
2402 		btrfs_mark_buffer_dirty(leaf);  in fill_holes()
2526 	struct extent_buffer *leaf;  in btrfs_insert_replace_extent()  local
2546 	leaf = path->nodes[0];  in btrfs_insert_replace_extent()
2548 	write_extent_buffer(leaf, extent_info->extent_buf,  in btrfs_insert_replace_extent()
2549 			    btrfs_item_ptr_offset(leaf, slot),  in btrfs_insert_replace_extent()
2551 	extent = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item);  in btrfs_insert_replace_extent()
2552 	ASSERT(btrfs_file_extent_type(leaf, extent) != BTRFS_FILE_EXTENT_INLINE);  in btrfs_insert_replace_extent()
2553 	btrfs_set_file_extent_offset(leaf, extent, extent_info->data_offset);  in btrfs_insert_replace_extent()
2554 	btrfs_set_file_extent_num_bytes(leaf, extent, replace_len);  in btrfs_insert_replace_extent()
2556 		btrfs_set_file_extent_generation(leaf, extent, trans->transid);  in btrfs_insert_replace_extent()
2557 	btrfs_mark_buffer_dirty(leaf);  in btrfs_insert_replace_extent()