981 	size_t iosize;  in btrfs_do_readpage()  local
996 			iosize = PAGE_SIZE - zero_offset;  in btrfs_do_readpage()
997 			memzero_page(page, zero_offset, iosize);  in btrfs_do_readpage()
1009 			iosize = PAGE_SIZE - pg_offset;  in btrfs_do_readpage()
1010 			memzero_page(page, pg_offset, iosize);  in btrfs_do_readpage()
1011 			unlock_extent(tree, cur, cur + iosize - 1, NULL);  in btrfs_do_readpage()
1012 			end_page_read(page, true, cur, iosize);  in btrfs_do_readpage()
1029 		iosize = min(extent_map_end(em) - cur, end - cur + 1);  in btrfs_do_readpage()
1030 		iosize = ALIGN(iosize, blocksize);  in btrfs_do_readpage()
1086 			memzero_page(page, pg_offset, iosize);  in btrfs_do_readpage()
1088 			unlock_extent(tree, cur, cur + iosize - 1, NULL);  in btrfs_do_readpage()
1089 			end_page_read(page, true, cur, iosize);  in btrfs_do_readpage()
1090 			cur = cur + iosize;  in btrfs_do_readpage()
1091 			pg_offset += iosize;  in btrfs_do_readpage()
1096 			unlock_extent(tree, cur, cur + iosize - 1, NULL);  in btrfs_do_readpage()
1097 			end_page_read(page, true, cur, iosize);  in btrfs_do_readpage()
1098 			cur = cur + iosize;  in btrfs_do_readpage()
1099 			pg_offset += iosize;  in btrfs_do_readpage()
1110 		submit_extent_page(bio_ctrl, disk_bytenr, page, iosize,  in btrfs_do_readpage()
1112 		cur = cur + iosize;  in btrfs_do_readpage()
1113 		pg_offset += iosize;  in btrfs_do_readpage()
1311 		u32 iosize;  in __extent_writepage_io()  local
1359 		iosize = min(min(em_end, end + 1), dirty_range_end) - cur;  in __extent_writepage_io()
1363 		btrfs_set_range_writeback(inode, cur, cur + iosize - 1);  in __extent_writepage_io()
1376 		btrfs_page_clear_dirty(fs_info, page, cur, iosize);  in __extent_writepage_io()
1378 		submit_extent_page(bio_ctrl, disk_bytenr, page, iosize,  in __extent_writepage_io()
1380 		cur += iosize;  in __extent_writepage_io()