Hi Andrew, After merging the akpm tree, today's linux-next build (powerpc allyesconfig) failed like this: mm/page_alloc.c: In function 'dump_vma': mm/page_alloc.c:6742:46: error: request for member 'pgprot' in something not a structure or union vma->vm_prev, vma->vm_mm, vma->vm_page_prot.pgprot, ^ Caused by commit d1305f0fa17f ("mm: introduce dump_vma"). pgprot_t on PPC is normally (i.e. unless STRICT_MM_TYPECHECKS is explicitly defined) just an "unsigned long" (see arch/powerpc/include/asm/page.h). This is true for several other architectures as well. I added this fix patch for today: From: Stephen Rothwell Date: Mon, 8 Sep 2014 19:41:54 +1000 Subject: [PATCH] mm: introduce dump_vma fix 2 Signed-off-by: Stephen Rothwell --- mm/page_alloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index cb510c08073b..0de60769bcf6 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -6739,7 +6739,7 @@ void dump_vma(const struct vm_area_struct *vma) "prot %lx anon_vma %p vm_ops %p\n" "pgoff %lx file %p private_data %p\n", vma, (void *)vma->vm_start, (void *)vma->vm_end, vma->vm_next, - vma->vm_prev, vma->vm_mm, vma->vm_page_prot.pgprot, + vma->vm_prev, vma->vm_mm, pgprot_val(vma->vm_page_prot), vma->anon_vma, vma->vm_ops, vma->vm_pgoff, vma->vm_file, vma->vm_private_data); dump_flags(vma->vm_flags, vmaflags_names, ARRAY_SIZE(vmaflags_names)); -- 2.1.0 -- Cheers, Stephen Rothwell sfr@canb.auug.org.au