Re: [PATCH v3 0/3] mm: introduce fincore() v3

[Christoph Hellwig]

On Tue, Jul 08, 2014 at 09:27:55AM -0400, Naoya Horiguchi wrote:
> On Tue, Jul 08, 2014 at 05:16:18AM -0700, Christoph Hellwig wrote:
> > Still a hard NAK for exposing page flags in a syscall ABI.  These are
> > way to volatile to go into an application interface.
> 
> Is there any specific reason that exporting via syscall ABI is more
> volatile than exporting via procfs as /proc/kpageflags alreadly does?

An optional proc debug output is very different from an actual system
call.

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