tree c44705a17d4133a8d4a8d02dae9bb5487c3bc2a6
parent 4c76d9d1fb9b21fa10c9e4c1fab2875018a88aa1
author Andrea Arcangeli <aarcange@redhat.com> 1294962400 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1294968760 -0800

thp: special pmd_trans_* functions

These returns 0 at compile time when the config option is disabled, to
allow gcc to eliminate the transparent hugepage function calls at compile
time without additional #ifdefs (only the export of those functions have
to be visible to gcc but they won't be required at link time and
huge_memory.o can be not built at all).

_PAGE_BIT_UNUSED1 is never used for pmd, only on pte.

Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>