396 static noinline int btrfs_copy_from_user(loff_t pos, size_t write_bytes,  in btrfs_copy_from_user()  argument
405 	while (write_bytes > 0) {  in btrfs_copy_from_user()
407 				     PAGE_SIZE - offset, write_bytes);  in btrfs_copy_from_user()
430 		write_bytes -= copied;  in btrfs_copy_from_user()
516 		      size_t num_pages, loff_t pos, size_t write_bytes,  in btrfs_dirty_pages()  argument
525 	u64 end_pos = pos + write_bytes;  in btrfs_dirty_pages()
530 	num_bytes = round_up(write_bytes + pos - start_pos,  in btrfs_dirty_pages()
1423 				  size_t write_bytes, bool force_uptodate)  in prepare_pages()  argument
1446 						    pos + write_bytes, false);  in prepare_pages()
1483 				size_t write_bytes,  in lock_and_cleanup_extent_if_need()  argument
1495 		+ round_up(pos + write_bytes - start_pos,  in lock_and_cleanup_extent_if_need()
1550 				    size_t *write_bytes)  in check_can_nocow()  argument
1563 	lockend = round_up(pos + *write_bytes,  in check_can_nocow()
1576 		*write_bytes = min_t(size_t, *write_bytes ,  in check_can_nocow()
1616 		size_t write_bytes = min(iov_iter_count(i),  in btrfs_buffered_write()  local
1619 		size_t num_pages = DIV_ROUND_UP(write_bytes + offset,  in btrfs_buffered_write()
1634 		if (unlikely(iov_iter_fault_in_readable(i, write_bytes))) {  in btrfs_buffered_write()
1641 		reserve_bytes = round_up(write_bytes + sector_offset,  in btrfs_buffered_write()
1646 						  write_bytes);  in btrfs_buffered_write()
1651 					&write_bytes) > 0) {  in btrfs_buffered_write()
1661 				num_pages = DIV_ROUND_UP(write_bytes + offset,  in btrfs_buffered_write()
1663 				reserve_bytes = round_up(write_bytes +  in btrfs_buffered_write()
1678 						write_bytes);  in btrfs_buffered_write()
1692 				    pos, write_bytes,  in btrfs_buffered_write()
1702 				num_pages, pos, write_bytes, &lockstart,  in btrfs_buffered_write()
1713 		copied = btrfs_copy_from_user(pos, write_bytes, pages, i);  in btrfs_buffered_write()
1724 		if (copied < write_bytes)  in btrfs_buffered_write()