Re: [PATCH] MM: implement MADV_FREE lazy freeing of anonymous memory

Rik van Riel
2007-05-07T04:46:13Z

Ulrich Drepper wrote:
> Rik van Riel wrote:
>> I think that maybe for 2.6.22 we should just alias MADV_FREE
>> to run with the MADV_DONTNEED functionality, so that the glibc
>> people can make the change on their side while we figure out
>> what will be the best thing to do on the kernel side.
>
> No need for that. We can later extend glibc to use MADV_FREE and fall
> back on MADV_DONTNEED.

It's trivial to merge the MADV_FREE #defines into the kernel
though, and aliasing MADV_FREE to MADV_DONTNEED for the time
being is a one-liner - just an extra constant into the big
switch statement in sys_madvise().