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| author | Naoya Horiguchi | 2010-09-08 03:19:37 +0200 |
|---|---|---|
| committer | Andi Kleen | 2010-10-08 09:32:45 +0200 |
| commit | a9869b837c098732bad84939015c0eb391b23e41 (patch) | |
| tree | 00ba63997470724e2704c9b7c995c91672b53c7b /mm/msync.c | |
| parent | HWPOISON, hugetlb: add free check to dequeue_hwpoison_huge_page() (diff) | |
| download | kernel-qcow2-linux-a9869b837c098732bad84939015c0eb391b23e41.tar.gz kernel-qcow2-linux-a9869b837c098732bad84939015c0eb391b23e41.tar.xz kernel-qcow2-linux-a9869b837c098732bad84939015c0eb391b23e41.zip | |
hugetlb: move refcounting in hugepage allocation inside hugetlb_lock
Currently alloc_huge_page() raises page refcount outside hugetlb_lock.
but it causes race when dequeue_hwpoison_huge_page() runs concurrently
with alloc_huge_page().
To avoid it, this patch moves set_page_refcounted() in hugetlb_lock.
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Reviewed-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Diffstat (limited to 'mm/msync.c')
0 files changed, 0 insertions, 0 deletions