Add another flag to the vmalloc subsystem to mark vmalloc areas used for virtualized compound pages. Display vcompound in /proc/vmallocinfo. Signed-off-by: Christoph Lameter --- include/linux/vmalloc.h | 1 + mm/vmalloc.c | 3 +++ 2 files changed, 4 insertions(+) Index: linux-2.6.25-rc8-mm2/include/linux/vmalloc.h =================================================================== --- linux-2.6.25-rc8-mm2.orig/include/linux/vmalloc.h 2008-04-14 20:01:25.295741503 -0700 +++ linux-2.6.25-rc8-mm2/include/linux/vmalloc.h 2008-04-14 20:01:27.465740891 -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 /* Virtualized Compound Page */ /* bits [20..32] reserved for arch specific ioremap internals */ /* Index: linux-2.6.25-rc8-mm2/mm/vmalloc.c =================================================================== --- linux-2.6.25-rc8-mm2.orig/mm/vmalloc.c 2008-04-14 20:01:25.295741503 -0700 +++ linux-2.6.25-rc8-mm2/mm/vmalloc.c 2008-04-14 20:01:27.485750108 -0700 @@ -972,6 +972,9 @@ 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, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org