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[PATCH] numa_maps: Fix potential crash on non IA64 platforms 

numa_maps should not scan over huge vmas in order not to cause problems for
non IA64 platforms that may have pte entries pointing to huge pages in a
variety of ways in their page tables.  Add a simple check to ignore vmas
containing huge pages.

Signed-off-by: Christoph Lameter <clameter@engr.sgi.com>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Christoph Lameter 2006-03-02 02:54:37 -08:00 committed by Linus Torvalds
parent 685db65e42
commit a57ebfdb2c
1 changed files with 2 additions and 1 deletions
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3
mm/mempolicy.c
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@ -1793,7 +1793,8 @@ int show_numa_map(struct seq_file *m, void *v)
if (!md)
return 0;
check_pgd_range(vma, vma->vm_start, vma->vm_end,
if (!is_vm_hugetlb_page(vma))
check_pgd_range(vma, vma->vm_start, vma->vm_end,
&node_online_map, MPOL_MF_STATS, md);
if (md->pages) {