[lkml]   [2008]   [Jul]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH 1/2] Export get_user_pages_fast
On Wed, 30 Jul 2008 20:18:45 +0300 Adrian Bunk <> wrote:

> > > The export would still only be available on x86 since no other arch
> > >
> >
> > That's presently true in Linus mainline. The powerpc implementation is
> > in -mm, but apprarently needs a bit more work.
> I still don't get the advantage of your suggestion.
> With the powerpc implementation included your suggestion doesn't change
> the fact that the export is available only on x86 and powerpc, and if a
> driver author mistakenly uses it and only tests it's driver on x86 it
> will still break on architectures other than x86 or powerpc.

On non-CONFIG_HAVE_GET_USER_PAGES_FAST architectures a
get_user_pages_fast() call will in fact call get_user_pages().

On CONFIG_HAVE_GET_USER_PAGES_FAST architectures, get_user_pages_fast()
is a real function. All architectures which implement that function
should export it to modules. Hence it should be exported from within
generic code.

 \ /
  Last update: 2008-07-30 19:31    [W:0.127 / U:0.072 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site