tree 280af3a27eff695bdf9275bb4e69aa474638c6b8
parent 7b8da4c7f0777489f8690115b5fd7704ac0abb8f
author Andrea Arcangeli <aarcange@redhat.com> 1463788704 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1463792310 -0700

mm: thp: microoptimize compound_mapcount()

compound_mapcount() is only called after PageCompound() has already been
checked by the caller, so there's no point to check it again.  Gcc may
optimize it away too because it's inline but this will remove the
runtime check for sure and add it'll add an assert instead.

Link: http://lkml.kernel.org/r/1462547040-1737-3-git-send-email-aarcange@redhat.com
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>