385 static noinline int btrfs_copy_from_user(loff_t pos, size_t write_bytes,  in btrfs_copy_from_user()  argument
394 	while (write_bytes > 0) {  in btrfs_copy_from_user()
396 				     PAGE_SIZE - offset, write_bytes);  in btrfs_copy_from_user()
419 		write_bytes -= copied;  in btrfs_copy_from_user()
464 		      size_t num_pages, loff_t pos, size_t write_bytes,  in btrfs_dirty_pages()  argument
473 	u64 end_pos = pos + write_bytes;  in btrfs_dirty_pages()
478 	num_bytes = round_up(write_bytes + pos - start_pos,  in btrfs_dirty_pages()
1347 				  size_t write_bytes, bool force_uptodate)  in prepare_pages()  argument
1370 						    pos + write_bytes, false);  in prepare_pages()
1407 				size_t write_bytes,  in lock_and_cleanup_extent_if_need()  argument
1418 	last_pos = round_up(pos + write_bytes, fs_info->sectorsize) - 1;  in lock_and_cleanup_extent_if_need()
1471 			   size_t *write_bytes, bool nowait)  in check_can_nocow()  argument
1486 	lockend = round_up(pos + *write_bytes,  in check_can_nocow()
1515 		*write_bytes = min_t(size_t, *write_bytes ,  in check_can_nocow()
1525 			      size_t *write_bytes)  in check_nocow_nolock()  argument
1527 	return check_can_nocow(inode, pos, write_bytes, true);  in check_nocow_nolock()
1550 			   size_t *write_bytes)  in btrfs_check_nocow_lock()  argument
1552 	return check_can_nocow(inode, pos, write_bytes, false);  in btrfs_check_nocow_lock()
1590 		size_t write_bytes = min(iov_iter_count(i),  in btrfs_buffered_write()  local
1593 		size_t num_pages = DIV_ROUND_UP(write_bytes + offset,  in btrfs_buffered_write()
1608 		if (unlikely(iov_iter_fault_in_readable(i, write_bytes))) {  in btrfs_buffered_write()
1615 		reserve_bytes = round_up(write_bytes + sector_offset,  in btrfs_buffered_write()
1621 						  write_bytes);  in btrfs_buffered_write()
1624 						   &write_bytes) > 0) {  in btrfs_buffered_write()
1634 				num_pages = DIV_ROUND_UP(write_bytes + offset,  in btrfs_buffered_write()
1636 				reserve_bytes = round_up(write_bytes +  in btrfs_buffered_write()
1651 						write_bytes);  in btrfs_buffered_write()
1665 				    pos, write_bytes,  in btrfs_buffered_write()
1675 				num_pages, pos, write_bytes, &lockstart,  in btrfs_buffered_write()
1686 		copied = btrfs_copy_from_user(pos, write_bytes, pages, i);  in btrfs_buffered_write()
1697 		if (copied < write_bytes)  in btrfs_buffered_write()