I use a Gentoo Linux, and I'm currently moving my
/usr/portage (portage's database, containing thousands of small ebuild files),
/var/tmp/portage (portage's compiling directory), and
/var/tmp/ccache (compiler cache directory) to reiserfs. These directories are performance sensitive and thousands of small files are accessed and written when portage is calculating package dependencies and compiling packages.
What is the fastest way of redirecting the directories into the new filesystem? Is there a huge performance loss from using a symlink since the system parse a symlink as a text? Is mount bind going to be better?