275 	if (fi->ext.len == 0) {  in lookup_extent_info()
282 	start_fofs = fi->ext.fofs;  in lookup_extent_info()
283 	end_fofs = fi->ext.fofs + fi->ext.len - 1;  in lookup_extent_info()
284 	start_blkaddr = fi->ext.blk;  in lookup_extent_info()
287 		*ei = fi->ext;  in lookup_extent_info()
306 	start_fofs = fi->ext.fofs;  in update_extent_info()
307 	end_fofs = fi->ext.fofs + fi->ext.len - 1;  in update_extent_info()
308 	start_blkaddr = fi->ext.blk;  in update_extent_info()
309 	end_blkaddr = fi->ext.blk + fi->ext.len - 1;  in update_extent_info()
312 	if (fi->ext.len == 1 && fofs == start_fofs)  in update_extent_info()
313 		fi->ext.len = 0;  in update_extent_info()
316 	if (fi->ext.len == 0) {  in update_extent_info()
318 			fi->ext.fofs = fofs;  in update_extent_info()
319 			fi->ext.blk = blkaddr;  in update_extent_info()
320 			fi->ext.len = 1;  in update_extent_info()
327 		fi->ext.fofs--;  in update_extent_info()
328 		fi->ext.blk--;  in update_extent_info()
329 		fi->ext.len++;  in update_extent_info()
335 		fi->ext.len++;  in update_extent_info()
340 	if (fi->ext.len > 1 &&  in update_extent_info()
342 		if ((end_fofs - fofs) < (fi->ext.len >> 1)) {  in update_extent_info()
343 			fi->ext.len = fofs - start_fofs;  in update_extent_info()
345 			fi->ext.fofs = fofs + 1;  in update_extent_info()
346 			fi->ext.blk = start_blkaddr + fofs - start_fofs + 1;  in update_extent_info()
347 			fi->ext.len -= fofs - start_fofs + 1;  in update_extent_info()
354 	if (fi->ext.len < F2FS_MIN_EXTENT_LEN) {  in update_extent_info()
355 		fi->ext.len = 0;  in update_extent_info()
723 	struct extent_info *ext = &F2FS_I(inode)->ext;  in f2fs_preserve_extent_tree()  local
731 		if (ext->len) {  in f2fs_preserve_extent_tree()
732 			ext->len = 0;  in f2fs_preserve_extent_tree()
752 		if (__is_extent_same(ext, &en->ei))  in f2fs_preserve_extent_tree()
755 		*ext = en->ei;  in f2fs_preserve_extent_tree()
757 	} else if (ext->len) {  in f2fs_preserve_extent_tree()
758 		ext->len = 0;  in f2fs_preserve_extent_tree()
871 	get_extent_info(&F2FS_I(inode)->ext, *i_ext);  in f2fs_init_extent_cache()