262 	map_bh(bh_result, sb, ei->blk + pgofs - ei->fofs);  in f2fs_map_bh()
263 	mapped_size = (ei->fofs + ei->len - pgofs) << blkbits;  in f2fs_map_bh()
282 	start_fofs = fi->ext.fofs;  in lookup_extent_info()
283 	end_fofs = fi->ext.fofs + fi->ext.len - 1;  in lookup_extent_info()
296 static bool update_extent_info(struct inode *inode, pgoff_t fofs,  in update_extent_info()  argument
306 	start_fofs = fi->ext.fofs;  in update_extent_info()
307 	end_fofs = fi->ext.fofs + fi->ext.len - 1;  in update_extent_info()
312 	if (fi->ext.len == 1 && fofs == start_fofs)  in update_extent_info()
318 			fi->ext.fofs = fofs;  in update_extent_info()
326 	if (fofs == start_fofs - 1 && blkaddr == start_blkaddr - 1) {  in update_extent_info()
327 		fi->ext.fofs--;  in update_extent_info()
334 	if (fofs == end_fofs + 1 && blkaddr == end_blkaddr + 1) {  in update_extent_info()
341 		fofs >= start_fofs && fofs <= end_fofs) {  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()
439 							unsigned int fofs)  in __lookup_extent_tree()  argument
447 		if (cei->fofs <= fofs && cei->fofs + cei->len > fofs)  in __lookup_extent_tree()
454 		if (fofs < en->ei.fofs) {  in __lookup_extent_tree()
456 		} else if (fofs >= en->ei.fofs + en->ei.len) {  in __lookup_extent_tree()
478 		en->ei.fofs = prev->ei.fofs;  in __try_back_merge()
518 		if (ei->fofs < en->ei.fofs) {  in __insert_extent_tree()
521 				en->ei.fofs = ei->fofs;  in __insert_extent_tree()
528 		} else if (ei->fofs >= en->ei.fofs + en->ei.len) {  in __insert_extent_tree()
590 	set_extent_info(&ei, le32_to_cpu(i_ext->fofs),  in f2fs_init_extent_tree()
638 static void f2fs_update_extent_tree(struct inode *inode, pgoff_t fofs,  in f2fs_update_extent_tree()  argument
648 	trace_f2fs_update_extent_tree(inode, fofs, blkaddr);  in f2fs_update_extent_tree()
655 	en = __lookup_extent_tree(et, fofs);  in f2fs_update_extent_tree()
665 		if (fofs - dei.fofs >= F2FS_MIN_EXTENT_LEN) {  in f2fs_update_extent_tree()
666 			set_extent_info(&ei, dei.fofs, dei.blk,  in f2fs_update_extent_tree()
667 							fofs - dei.fofs);  in f2fs_update_extent_tree()
672 		endofs = dei.fofs + dei.len - 1;  in f2fs_update_extent_tree()
673 		if (endofs - fofs >= F2FS_MIN_EXTENT_LEN) {  in f2fs_update_extent_tree()
674 			set_extent_info(&ei, fofs + 1,  in f2fs_update_extent_tree()
675 				fofs - dei.fofs + dei.blk, endofs - fofs);  in f2fs_update_extent_tree()
683 		set_extent_info(&ei, fofs, blkaddr, 1);  in f2fs_update_extent_tree()
890 	pgoff_t fofs;  in f2fs_update_extent_cache()  local
897 	fofs = start_bidx_of_node(ofs_of_node(dn->node_page), fi) +  in f2fs_update_extent_cache()
901 		return f2fs_update_extent_tree(dn->inode, fofs,  in f2fs_update_extent_cache()
904 	if (update_extent_info(dn->inode, fofs, dn->data_blkaddr))  in f2fs_update_extent_cache()
934 		dn.data_blkaddr = ei.blk + index - ei.fofs;  in find_data_page()
998 		dn.data_blkaddr = ei.blk + index - ei.fofs;  in get_lock_data_page()
1123 	pgoff_t fofs;  in __allocate_data_block()  local
1149 	fofs = start_bidx_of_node(ofs_of_node(dn->node_page), fi) +  in __allocate_data_block()
1151 	if (i_size_read(dn->inode) < ((fofs + 1) << PAGE_CACHE_SHIFT))  in __allocate_data_block()
1152 		i_size_write(dn->inode, ((fofs + 1) << PAGE_CACHE_SHIFT));  in __allocate_data_block()