Test handling of private file mappings in the kernel. Check that
writes of only one thread / process are seen in each page and that
none of these make it into the original file.
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Eryu Guan <eguan@redhat.com>
Jan Kara