tree 369550d01b22fc9a68d07652513e532b97ec8975
parent b6b40c532a36f91df9c21caf9baba3b635e99d4e
author Martin Schwidefsky <schwidefsky@de.ibm.com> 1202226643 +0100
committer Martin Schwidefsky <schwidefsky@de.ibm.com> 1202226658 +0100

[S390] Cleanup & optimize bitops.

The bitops header is now a bit shorter and easier to understand since
it uses less inline assembly. It requires some tricks to persuade the
compiler to generate decent code. The ffz/ffs functions now use the
_zb_findmap/_sb_findmap table as well.
With this cleanup the new bitops for ext4 can be implemented with a
few lines, instead of another large inline assembly.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>