Commit-ID: 0c3a775e1e0b069bf765f8355b723ce0d18dcc6c Gitweb: http://git.kernel.org/tip/0c3a775e1e0b069bf765f8355b723ce0d18dcc6c Author: Mel Gorman <mgor...@suse.de> AuthorDate: Mon, 7 Oct 2013 11:28:42 +0100 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Wed, 9 Oct 2013 12:39:40 +0200
mm: numa: Do not account for a hinting fault if we raced If another task handled a hinting fault in parallel then do not double account for it. Signed-off-by: Mel Gorman <mgor...@suse.de> Reviewed-by: Rik van Riel <r...@redhat.com> Cc: Andrea Arcangeli <aarca...@redhat.com> Cc: Johannes Weiner <han...@cmpxchg.org> Cc: Srikar Dronamraju <sri...@linux.vnet.ibm.com> Signed-off-by: Peter Zijlstra <pet...@infradead.org> Link: http://lkml.kernel.org/r/1381141781-10992-5-git-send-email-mgor...@suse.de Signed-off-by: Ingo Molnar <mi...@kernel.org> --- mm/huge_memory.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 19dbb08..dab2bab 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1325,8 +1325,11 @@ int do_huge_pmd_numa_page(struct mm_struct *mm, struct vm_area_struct *vma, check_same: spin_lock(&mm->page_table_lock); - if (unlikely(!pmd_same(pmd, *pmdp))) + if (unlikely(!pmd_same(pmd, *pmdp))) { + /* Someone else took our fault */ + current_nid = -1; goto out_unlock; + } clear_pmdnuma: pmd = pmd_mknonnuma(pmd); set_pmd_at(mm, haddr, pmdp, pmd); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
