395 static noinline int btrfs_copy_from_user(loff_t pos, size_t write_bytes,  in btrfs_copy_from_user()  argument
404 	while (write_bytes > 0) {  in btrfs_copy_from_user()
406 				     PAGE_SIZE - offset, write_bytes);  in btrfs_copy_from_user()
429 		write_bytes -= copied;  in btrfs_copy_from_user()
515 		      size_t num_pages, loff_t pos, size_t write_bytes,  in btrfs_dirty_pages()  argument
524 	u64 end_pos = pos + write_bytes;  in btrfs_dirty_pages()
529 	num_bytes = round_up(write_bytes + pos - start_pos,  in btrfs_dirty_pages()
1405 				  size_t write_bytes, bool force_uptodate)  in prepare_pages()  argument
1428 						    pos + write_bytes, false);  in prepare_pages()
1465 				size_t write_bytes,  in lock_and_cleanup_extent_if_need()  argument
1477 		+ round_up(pos + write_bytes - start_pos,  in lock_and_cleanup_extent_if_need()
1523 				    size_t *write_bytes)  in check_can_nocow()  argument
1537 	lockend = round_up(pos + *write_bytes,  in check_can_nocow()
1559 		*write_bytes = min_t(size_t, *write_bytes ,  in check_can_nocow()
1599 		size_t write_bytes = min(iov_iter_count(i),  in btrfs_buffered_write()  local
1602 		size_t num_pages = DIV_ROUND_UP(write_bytes + offset,  in btrfs_buffered_write()
1617 		if (unlikely(iov_iter_fault_in_readable(i, write_bytes))) {  in btrfs_buffered_write()
1623 		reserve_bytes = round_up(write_bytes + sector_offset,  in btrfs_buffered_write()
1628 						  write_bytes);  in btrfs_buffered_write()
1633 					&write_bytes) > 0) {  in btrfs_buffered_write()
1643 				num_pages = DIV_ROUND_UP(write_bytes + offset,  in btrfs_buffered_write()
1645 				reserve_bytes = round_up(write_bytes +  in btrfs_buffered_write()
1660 						write_bytes);  in btrfs_buffered_write()
1674 				    pos, write_bytes,  in btrfs_buffered_write()
1684 				num_pages, pos, write_bytes, &lockstart,  in btrfs_buffered_write()
1695 		copied = btrfs_copy_from_user(pos, write_bytes, pages, i);  in btrfs_buffered_write()
1706 		if (copied < write_bytes)  in btrfs_buffered_write()