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    SubjectRe: [PATCH] Install kernel-page-flags.h
    On Wed, Mar 14, 2012 at 12:40:36PM +0200, Alexey Dobriyan wrote:
    > >> Programs using /proc/kpageflags need to know about the various flags. ??The
    > >> <linux/kernel-page-flags.h> provides them and the comments in the file
    > >> indicate that it is supposed to be used by user-level code. ??But the file
    > >> is not installed.
    > >>
    > >> The patch below installs the headers and marks the unstable flags as
    > >> out-of-bounds.
    > >
    > > I don't think this is a good idea at all. ??Let's shoot the person who
    > > added that braindead interface ASAP, and replace it with one printing
    > > the flags in ASCII format.
    > ASCII sucks.
    > This interface is not for humans.

    But we still can't lock down the page flags for a user interface - they
    are a very scare resource and we can't afford to keep them stable due
    to userspace poking into internals.

    I guess the best we can do is to have a translation table for kernel
    internal to external documented flags. Once you export the header with
    the meanings it's time to add that table, even if it starts out as a 1:1

     \ /
      Last update: 2012-03-19 12:35    [W:0.020 / U:4.688 seconds]
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