[03/14] vmallocinfo: Support display of vcompound for a virtual compound page

[Christoph Lameter]

Add another flag to the vmalloc subsystem to mark virtual compound pages.

Signed-off-by: Christoph Lameter <clameter@xxxxxxx>

---
 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;
 }

-- 
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