Add another flag to the vmalloc subsystem to mark virtual compound pages. Signed-off-by: Christoph Lameter --- include/linux/vmalloc.h | 1 + mm/vmalloc.c | 3 +++ 2 files changed, 4 insertions(+) Index: linux-2.6.25-rc5-mm1/include/linux/vmalloc.h =================================================================== --- linux-2.6.25-rc5-mm1.orig/include/linux/vmalloc.h 2008-03-19 18:17:42.093443900 -0700 +++ linux-2.6.25-rc5-mm1/include/linux/vmalloc.h 2008-03-19 18:27:20.150422445 -0700 @@ -12,6 +12,7 @@ struct vm_area_struct; #define VM_MAP 0x00000004 /* vmap()ed pages */ #define VM_USERMAP 0x00000008 /* suitable for remap_vmalloc_range */ #define VM_VPAGES 0x00000010 /* buffer for pages was vmalloc'ed */ +#define VM_VCOMPOUND 0x00000020 /* Page allocator fallback */ /* bits [20..32] reserved for arch specific ioremap internals */ /* Index: linux-2.6.25-rc5-mm1/mm/vmalloc.c =================================================================== --- linux-2.6.25-rc5-mm1.orig/mm/vmalloc.c 2008-03-19 18:18:02.689633934 -0700 +++ linux-2.6.25-rc5-mm1/mm/vmalloc.c 2008-03-19 18:27:20.150422445 -0700 @@ -974,6 +974,9 @@ static int s_show(struct seq_file *m, vo if (v->flags & VM_VPAGES) seq_printf(m, " vpages"); + if (v->flags & VM_VCOMPOUND) + seq_printf(m, " vcompound"); + seq_putc(m, '\n'); return 0; } -- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/