linux-kernel - [122/262] /proc/self/numa_maps: restore "huge" tag for hugetlb vmas

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Date:	Wed, 09 Nov 2011 13:27:24 -0800
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Hugh Dickins <hughd@...gle.com>,
	David Rientjes <rientjes@...gle.com>,
	Lee Schermerhorn <lee.schermerhorn@...com>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Christoph Lameter <cl@...ux-foundation.org>
Subject: [122/262] /proc/self/numa_maps: restore "huge" tag for hugetlb vmas

3.0-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Andrew Morton <akpm@...ux-foundation.org>

commit fc360bd9cdcf875639a77f07fafec26699c546f3 upstream.

The display of the "huge" tag was accidentally removed in 29ea2f698 ("mm:
use walk_page_range() instead of custom page table walking code").

Reported-by: Stephen Hemminger <shemminger@...tta.com>
Tested-by: Stephen Hemminger <shemminger@...tta.com>
Reviewed-by: Stephen Wilson <wilsons@...rt.ca>
Cc: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc: Hugh Dickins <hughd@...gle.com>
Acked-by: David Rientjes <rientjes@...gle.com>
Cc: Lee Schermerhorn <lee.schermerhorn@...com>
Cc: Alexey Dobriyan <adobriyan@...il.com>
Cc: Christoph Lameter <cl@...ux-foundation.org>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 fs/proc/task_mmu.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -1039,6 +1039,9 @@ static int show_numa_map(struct seq_file
 		seq_printf(m, " stack");
 	}
 
+	if (is_vm_hugetlb_page(vma))
+		seq_printf(m, " huge");
+
 	walk_page_range(vma->vm_start, vma->vm_end, &walk);
 
 	if (!md->pages)


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