Re: get_mempolicy(2) type mismatch

["Jörn Engel" <joern-BHEL68pLQRGGvPXPguhicg@public.gmane.org>]

[ Removed linux-fsdevel - shouldn't have been on Cc: ]

On Mon, May 02, 2016 at 05:58:21PM -0700, Jörn Engel wrote:
> The manpage seems to have the wrong type for "addr".
> 
> Manpage:
>        int get_mempolicy(int *mode, unsigned long *nodemask,
>                          unsigned long maxnode, unsigned long addr,
>                          unsigned long flags);
> 
> /usr/include/numaif.h:
> extern long get_mempolicy(int *policy, const unsigned long *nmask,
>                         unsigned long maxnode, void *addr, int flags);

Found another problem.

"is always rounded to a multiple of sizeof(unsigned long)"

I suspect the rounding should be done to a multiple of BITS_PER_LONG, or
"sizeof(unsigned long) * 8".

Jörn, wondering how many others actually care about NUMA

--
Debugging is twice as hard as writing the code in the first place.
Therefore, if you write the code as cleverly as possible, you are,
by definition, not smart enough to debug it.
-- Brian W. Kernighan
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