699 	struct extent_buffer *leaf;  in __btrfs_drop_extents()  local
734 			leaf = path->nodes[0];  in __btrfs_drop_extents()
735 			btrfs_item_key_to_cpu(leaf, &key, path->slots[0] - 1);  in __btrfs_drop_extents()
743 		leaf = path->nodes[0];  in __btrfs_drop_extents()
744 		if (path->slots[0] >= btrfs_header_nritems(leaf)) {  in __btrfs_drop_extents()
754 			leaf = path->nodes[0];  in __btrfs_drop_extents()
758 		btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);  in __btrfs_drop_extents()
771 		fi = btrfs_item_ptr(leaf, path->slots[0],  in __btrfs_drop_extents()
773 		extent_type = btrfs_file_extent_type(leaf, fi);  in __btrfs_drop_extents()
777 			disk_bytenr = btrfs_file_extent_disk_bytenr(leaf, fi);  in __btrfs_drop_extents()
778 			num_bytes = btrfs_file_extent_disk_num_bytes(leaf, fi);  in __btrfs_drop_extents()
779 			extent_offset = btrfs_file_extent_offset(leaf, fi);  in __btrfs_drop_extents()
781 				btrfs_file_extent_num_bytes(leaf, fi);  in __btrfs_drop_extents()
784 				btrfs_file_extent_inline_len(leaf,  in __btrfs_drop_extents()
838 			leaf = path->nodes[0];  in __btrfs_drop_extents()
839 			fi = btrfs_item_ptr(leaf, path->slots[0] - 1,  in __btrfs_drop_extents()
841 			btrfs_set_file_extent_num_bytes(leaf, fi,  in __btrfs_drop_extents()
844 			fi = btrfs_item_ptr(leaf, path->slots[0],  in __btrfs_drop_extents()
848 			btrfs_set_file_extent_offset(leaf, fi, extent_offset);  in __btrfs_drop_extents()
849 			btrfs_set_file_extent_num_bytes(leaf, fi,  in __btrfs_drop_extents()
851 			btrfs_mark_buffer_dirty(leaf);  in __btrfs_drop_extents()
878 			btrfs_set_file_extent_offset(leaf, fi, extent_offset);  in __btrfs_drop_extents()
879 			btrfs_set_file_extent_num_bytes(leaf, fi,  in __btrfs_drop_extents()
881 			btrfs_mark_buffer_dirty(leaf);  in __btrfs_drop_extents()
899 			btrfs_set_file_extent_num_bytes(leaf, fi,  in __btrfs_drop_extents()
901 			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(root, 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()
1033 static int extent_mergeable(struct extent_buffer *leaf, int slot,  in extent_mergeable()  argument
1041 	if (slot < 0 || slot >= btrfs_header_nritems(leaf))  in extent_mergeable()
1044 	btrfs_item_key_to_cpu(leaf, &key, slot);  in extent_mergeable()
1048 	fi = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item);  in extent_mergeable()
1049 	if (btrfs_file_extent_type(leaf, fi) != BTRFS_FILE_EXTENT_REG ||  in extent_mergeable()
1050 	    btrfs_file_extent_disk_bytenr(leaf, fi) != bytenr ||  in extent_mergeable()
1051 	    btrfs_file_extent_offset(leaf, fi) != key.offset - orig_offset ||  in extent_mergeable()
1052 	    btrfs_file_extent_compression(leaf, fi) ||  in extent_mergeable()
1053 	    btrfs_file_extent_encryption(leaf, fi) ||  in extent_mergeable()
1054 	    btrfs_file_extent_other_encoding(leaf, fi))  in extent_mergeable()
1057 	extent_end = key.offset + btrfs_file_extent_num_bytes(leaf, fi);  in extent_mergeable()
1077 	struct extent_buffer *leaf;  in btrfs_mark_extent_written()  local
1111 	leaf = path->nodes[0];  in btrfs_mark_extent_written()
1112 	btrfs_item_key_to_cpu(leaf, &key, path->slots[0]);  in btrfs_mark_extent_written()
1114 	fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1116 	BUG_ON(btrfs_file_extent_type(leaf, fi) !=  in btrfs_mark_extent_written()
1118 	extent_end = key.offset + btrfs_file_extent_num_bytes(leaf, fi);  in btrfs_mark_extent_written()
1121 	bytenr = btrfs_file_extent_disk_bytenr(leaf, fi);  in btrfs_mark_extent_written()
1122 	num_bytes = btrfs_file_extent_disk_num_bytes(leaf, fi);  in btrfs_mark_extent_written()
1123 	orig_offset = key.offset - btrfs_file_extent_offset(leaf, fi);  in btrfs_mark_extent_written()
1129 		if (extent_mergeable(leaf, path->slots[0] - 1,  in btrfs_mark_extent_written()
1134 			fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1136 			btrfs_set_file_extent_generation(leaf, fi,  in btrfs_mark_extent_written()
1138 			btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1140 			btrfs_set_file_extent_offset(leaf, fi,  in btrfs_mark_extent_written()
1142 			fi = btrfs_item_ptr(leaf, path->slots[0] - 1,  in btrfs_mark_extent_written()
1144 			btrfs_set_file_extent_generation(leaf, fi,  in btrfs_mark_extent_written()
1146 			btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1148 			btrfs_mark_buffer_dirty(leaf);  in btrfs_mark_extent_written()
1156 		if (extent_mergeable(leaf, path->slots[0] + 1,  in btrfs_mark_extent_written()
1159 			fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1161 			btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1163 			btrfs_set_file_extent_generation(leaf, fi,  in btrfs_mark_extent_written()
1169 			fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1171 			btrfs_set_file_extent_generation(leaf, fi,  in btrfs_mark_extent_written()
1173 			btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1175 			btrfs_set_file_extent_offset(leaf, fi,  in btrfs_mark_extent_written()
1177 			btrfs_mark_buffer_dirty(leaf);  in btrfs_mark_extent_written()
1197 		leaf = path->nodes[0];  in btrfs_mark_extent_written()
1198 		fi = btrfs_item_ptr(leaf, path->slots[0] - 1,  in btrfs_mark_extent_written()
1200 		btrfs_set_file_extent_generation(leaf, fi, trans->transid);  in btrfs_mark_extent_written()
1201 		btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1204 		fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1207 		btrfs_set_file_extent_generation(leaf, fi, trans->transid);  in btrfs_mark_extent_written()
1208 		btrfs_set_file_extent_offset(leaf, fi, split - orig_offset);  in btrfs_mark_extent_written()
1209 		btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1211 		btrfs_mark_buffer_dirty(leaf);  in btrfs_mark_extent_written()
1230 	if (extent_mergeable(leaf, path->slots[0] + 1,  in btrfs_mark_extent_written()
1247 	if (extent_mergeable(leaf, path->slots[0] - 1,  in btrfs_mark_extent_written()
1263 		fi = btrfs_item_ptr(leaf, path->slots[0],  in btrfs_mark_extent_written()
1265 		btrfs_set_file_extent_type(leaf, fi,  in btrfs_mark_extent_written()
1267 		btrfs_set_file_extent_generation(leaf, fi, trans->transid);  in btrfs_mark_extent_written()
1268 		btrfs_mark_buffer_dirty(leaf);  in btrfs_mark_extent_written()
1270 		fi = btrfs_item_ptr(leaf, del_slot - 1,  in btrfs_mark_extent_written()
1272 		btrfs_set_file_extent_type(leaf, fi,  in btrfs_mark_extent_written()
1274 		btrfs_set_file_extent_generation(leaf, fi, trans->transid);  in btrfs_mark_extent_written()
1275 		btrfs_set_file_extent_num_bytes(leaf, fi,  in btrfs_mark_extent_written()
1277 		btrfs_mark_buffer_dirty(leaf);  in btrfs_mark_extent_written()
2099 static int hole_mergeable(struct inode *inode, struct extent_buffer *leaf,  in hole_mergeable()  argument
2105 	if (slot < 0 || slot >= btrfs_header_nritems(leaf))  in hole_mergeable()
2108 	btrfs_item_key_to_cpu(leaf, &key, slot);  in hole_mergeable()
2113 	fi = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item);  in hole_mergeable()
2115 	if (btrfs_file_extent_type(leaf, fi) != BTRFS_FILE_EXTENT_REG)  in hole_mergeable()
2118 	if (btrfs_file_extent_disk_bytenr(leaf, fi))  in hole_mergeable()
2123 	if (key.offset + btrfs_file_extent_num_bytes(leaf, fi) == start)  in hole_mergeable()
2132 	struct extent_buffer *leaf;  in fill_holes()  local
2151 	leaf = path->nodes[0];  in fill_holes()
2152 	if (hole_mergeable(inode, leaf, path->slots[0]-1, offset, end)) {  in fill_holes()
2156 		fi = btrfs_item_ptr(leaf, path->slots[0],  in fill_holes()
2158 		num_bytes = btrfs_file_extent_num_bytes(leaf, fi) +  in fill_holes()
2160 		btrfs_set_file_extent_num_bytes(leaf, fi, num_bytes);  in fill_holes()
2161 		btrfs_set_file_extent_ram_bytes(leaf, fi, num_bytes);  in fill_holes()
2162 		btrfs_set_file_extent_offset(leaf, fi, 0);  in fill_holes()
2163 		btrfs_mark_buffer_dirty(leaf);  in fill_holes()
2167 	if (hole_mergeable(inode, leaf, path->slots[0], offset, end)) {  in fill_holes()
2172 		fi = btrfs_item_ptr(leaf, path->slots[0],  in fill_holes()
2174 		num_bytes = btrfs_file_extent_num_bytes(leaf, fi) + end -  in fill_holes()
2176 		btrfs_set_file_extent_num_bytes(leaf, fi, num_bytes);  in fill_holes()
2177 		btrfs_set_file_extent_ram_bytes(leaf, fi, num_bytes);  in fill_holes()
2178 		btrfs_set_file_extent_offset(leaf, fi, 0);  in fill_holes()
2179 		btrfs_mark_buffer_dirty(leaf);  in fill_holes()