2918 	u64 cur = start;  in __do_readpage()  local
2958 	while (cur <= end) {  in __do_readpage()
2962 		if (cur >= last_byte) {  in __do_readpage()
2971 			set_extent_uptodate(tree, cur, cur + iosize - 1,  in __do_readpage()
2974 				unlock_extent_cached(tree, cur,  in __do_readpage()
2975 						     cur + iosize - 1,  in __do_readpage()
2979 		em = __get_extent_map(inode, page, pg_offset, cur,  in __do_readpage()
2980 				      end - cur + 1, get_extent, em_cached);  in __do_readpage()
2984 				unlock_extent(tree, cur, end);  in __do_readpage()
2987 		extent_offset = cur - em->start;  in __do_readpage()
2988 		BUG_ON(extent_map_end(em) <= cur);  in __do_readpage()
2989 		BUG_ON(end < cur);  in __do_readpage()
2997 		iosize = min(extent_map_end(em) - cur, end - cur + 1);  in __do_readpage()
3067 			set_extent_uptodate(tree, cur, cur + iosize - 1,  in __do_readpage()
3069 			unlock_extent_cached(tree, cur, cur + iosize - 1,  in __do_readpage()
3071 			cur = cur + iosize;  in __do_readpage()
3076 		if (test_range_bit(tree, cur, cur_end,  in __do_readpage()
3080 				unlock_extent(tree, cur, cur + iosize - 1);  in __do_readpage()
3081 			cur = cur + iosize;  in __do_readpage()
3091 				unlock_extent(tree, cur, cur + iosize - 1);  in __do_readpage()
3092 			cur = cur + iosize;  in __do_readpage()
3111 				unlock_extent(tree, cur, cur + iosize - 1);  in __do_readpage()
3113 		cur = cur + iosize;  in __do_readpage()
3375 	u64 cur = start;  in __extent_writepage_io()  local
3422 	while (cur <= end) {  in __extent_writepage_io()
3424 		if (cur >= i_size) {  in __extent_writepage_io()
3426 				tree->ops->writepage_end_io_hook(page, cur,  in __extent_writepage_io()
3430 		em = epd->get_extent(inode, page, pg_offset, cur,  in __extent_writepage_io()
3431 				     end - cur + 1, 1);  in __extent_writepage_io()
3438 		extent_offset = cur - em->start;  in __extent_writepage_io()
3440 		BUG_ON(em_end <= cur);  in __extent_writepage_io()
3441 		BUG_ON(end < cur);  in __extent_writepage_io()
3442 		iosize = min(em_end - cur, end - cur + 1);  in __extent_writepage_io()
3463 				tree->ops->writepage_end_io_hook(page, cur,  in __extent_writepage_io()
3464 							 cur + iosize - 1,  in __extent_writepage_io()
3474 			cur += iosize;  in __extent_writepage_io()
3480 			ret = tree->ops->writepage_io_hook(page, cur,  in __extent_writepage_io()
3481 						cur + iosize - 1);  in __extent_writepage_io()
3490 			set_range_writeback(tree, cur, cur + iosize - 1);  in __extent_writepage_io()
3494 				       page->index, cur, end);  in __extent_writepage_io()
3505 		cur = cur + iosize;  in __extent_writepage_io()
5294 	size_t cur;  in read_extent_buffer()  local
5310 		cur = min(len, (PAGE_CACHE_SIZE - offset));  in read_extent_buffer()
5312 		memcpy(dst, kaddr + offset, cur);  in read_extent_buffer()
5314 		dst += cur;  in read_extent_buffer()
5315 		len -= cur;  in read_extent_buffer()
5325 	size_t cur;  in read_extent_buffer_to_user()  local
5342 		cur = min(len, (PAGE_CACHE_SIZE - offset));  in read_extent_buffer_to_user()
5344 		if (copy_to_user(dst, kaddr + offset, cur)) {  in read_extent_buffer_to_user()
5349 		dst += cur;  in read_extent_buffer_to_user()
5350 		len -= cur;  in read_extent_buffer_to_user()
5400 	size_t cur;  in memcmp_extent_buffer()  local
5417 		cur = min(len, (PAGE_CACHE_SIZE - offset));  in memcmp_extent_buffer()
5420 		ret = memcmp(ptr, kaddr + offset, cur);  in memcmp_extent_buffer()
5424 		ptr += cur;  in memcmp_extent_buffer()
5425 		len -= cur;  in memcmp_extent_buffer()
5435 	size_t cur;  in write_extent_buffer()  local
5452 		cur = min(len, PAGE_CACHE_SIZE - offset);  in write_extent_buffer()
5454 		memcpy(kaddr + offset, src, cur);  in write_extent_buffer()
5456 		src += cur;  in write_extent_buffer()
5457 		len -= cur;  in write_extent_buffer()
5466 	size_t cur;  in memset_extent_buffer()  local
5482 		cur = min(len, PAGE_CACHE_SIZE - offset);  in memset_extent_buffer()
5484 		memset(kaddr + offset, c, cur);  in memset_extent_buffer()
5486 		len -= cur;  in memset_extent_buffer()
5497 	size_t cur;  in copy_extent_buffer()  local
5513 		cur = min(len, (unsigned long)(PAGE_CACHE_SIZE - offset));  in copy_extent_buffer()
5516 		read_extent_buffer(src, kaddr + offset, src_offset, cur);  in copy_extent_buffer()
5518 		src_offset += cur;  in copy_extent_buffer()
5519 		len -= cur;  in copy_extent_buffer()
5556 	size_t cur;  in memcpy_extent_buffer()  local
5583 		cur = min(len, (unsigned long)(PAGE_CACHE_SIZE -  in memcpy_extent_buffer()
5585 		cur = min_t(unsigned long, cur,  in memcpy_extent_buffer()
5589 			   dst_off_in_page, src_off_in_page, cur);  in memcpy_extent_buffer()
5591 		src_offset += cur;  in memcpy_extent_buffer()
5592 		dst_offset += cur;  in memcpy_extent_buffer()
5593 		len -= cur;  in memcpy_extent_buffer()
5600 	size_t cur;  in memmove_extent_buffer()  local
5632 		cur = min_t(unsigned long, len, src_off_in_page + 1);  in memmove_extent_buffer()
5633 		cur = min(cur, dst_off_in_page + 1);  in memmove_extent_buffer()
5635 			   dst_off_in_page - cur + 1,  in memmove_extent_buffer()
5636 			   src_off_in_page - cur + 1, cur);  in memmove_extent_buffer()
5638 		dst_end -= cur;  in memmove_extent_buffer()
5639 		src_end -= cur;  in memmove_extent_buffer()
5640 		len -= cur;  in memmove_extent_buffer()