thp: mprotect: transparent huge page support
authorJohannes Weiner <hannes@cmpxchg.org>
Thu, 13 Jan 2011 23:47:04 +0000 (15:47 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 14 Jan 2011 01:32:44 +0000 (17:32 -0800)
commitcd7548ab360c462118568eebb8c6da3bc303b02e
tree44d145e6139c8753659ee773ae35810dc3d92d0b
parentb36f5b0710e9e3b92484de32920fddcb17278664
thp: mprotect: transparent huge page support

Natively handle huge pmds when changing page tables on behalf of
mprotect().

I left out update_mmu_cache() because we do not need it on x86 anyway but
more importantly the interface works on ptes, not pmds.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
include/linux/huge_mm.h
mm/huge_memory.c
mm/mprotect.c