path: root/mm/hugetlb.c
diff options
authorNaoya Horiguchi <n-horiguchi@ah.jp.nec.com>2010-05-28 00:29:20 (GMT)
committerAndi Kleen <ak@linux.intel.com>2010-08-11 07:22:46 (GMT)
commit93f70f900da36fbc19c13c2aa04b2e468c8d00fb (patch)
tree7868f891bca0ed18c9806771a68feac0b4010517 /mm/hugetlb.c
parentc9fbdd5f131440981b124883656ea21fb12cde4a (diff)
HWPOISON, hugetlb: isolate corrupted hugepage
If error hugepage is not in-use, we can fully recovery from error by dequeuing it from freelist, so return RECOVERY. Otherwise whether or not we can recovery depends on user processes, so return DELAYED. Dependency: "HWPOISON, hugetlb: enable error handling path for hugepage" Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Andrew Morton <akpm@linux-foundation.org> Acked-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Andi Kleen <ak@linux.intel.com>
Diffstat (limited to 'mm/hugetlb.c')
1 files changed, 16 insertions, 0 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index aa3c517..8c163f6 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2825,3 +2825,19 @@ void hugetlb_unreserve_pages(struct inode *inode, long offset, long freed)
hugetlb_put_quota(inode->i_mapping, (chg - freed));
hugetlb_acct_memory(h, -(chg - freed));
+ * This function is called from memory failure code.
+ * Assume the caller holds page lock of the head page.
+ */
+void __isolate_hwpoisoned_huge_page(struct page *hpage)
+ struct hstate *h = page_hstate(hpage);
+ int nid = page_to_nid(hpage);
+ spin_lock(&hugetlb_lock);
+ list_del(&hpage->lru);
+ h->free_huge_pages--;
+ h->free_huge_pages_node[nid]--;
+ spin_unlock(&hugetlb_lock);

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