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authorNaoya Horiguchi <naoya.horiguchi@nec.com>2022-07-14 07:24:16 +0300
committerAndrew Morton <akpm@linux-foundation.org>2022-08-09 04:06:44 +0300
commitac5fcde0a96a18773f06b7c00c5ea081bbdc64b3 (patch)
treed43c1dcc17a8412deb8de67f3a29b692141d2287 /include
parent161df60e9e89651c9aa3ae0edc9aae3a8a2d21e7 (diff)
downloadlinux-ac5fcde0a96a18773f06b7c00c5ea081bbdc64b3.tar.xz
mm, hwpoison: make unpoison aware of raw error info in hwpoisoned hugepage
Raw error info list needs to be removed when hwpoisoned hugetlb is unpoisoned. And unpoison handler needs to know how many errors there are in the target hugepage. So add them. HPageVmemmapOptimized(hpage) and HPageRawHwpUnreliable(hpage)) sometimes can't be unpoisoned, so skip them. Link: https://lkml.kernel.org/r/20220714042420.1847125-5-naoya.horiguchi@linux.dev Signed-off-by: Naoya Horiguchi <naoya.horiguchi@nec.com> Reported-by: kernel test robot <lkp@intel.com> Reviewed-by: Miaohe Lin <linmiaohe@huawei.com> Cc: David Hildenbrand <david@redhat.com> Cc: Liu Shixin <liushixin2@huawei.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Muchun Song <songmuchun@bytedance.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Yang Shi <shy828301@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/swapops.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/swapops.h b/include/linux/swapops.h
index bb7afd03a324..a3d435bf9f97 100644
--- a/include/linux/swapops.h
+++ b/include/linux/swapops.h
@@ -490,6 +490,11 @@ static inline void num_poisoned_pages_dec(void)
atomic_long_dec(&num_poisoned_pages);
}
+static inline void num_poisoned_pages_sub(long i)
+{
+ atomic_long_sub(i, &num_poisoned_pages);
+}
+
#else
static inline swp_entry_t make_hwpoison_entry(struct page *page)
@@ -505,6 +510,10 @@ static inline int is_hwpoison_entry(swp_entry_t swp)
static inline void num_poisoned_pages_inc(void)
{
}
+
+static inline void num_poisoned_pages_sub(long i)
+{
+}
#endif
static inline int non_swap_entry(swp_entry_t entry)