[PATCH 4/4] mm: memory-failure: add PageOffline() check

From: Miaohe Lin
Date: Fri Jul 14 2023 - 23:17:43 EST


Memory failure is not interested in logically offlined page. Skip this
type of pages.

Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
---
mm/memory-failure.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 42e63b0ab5f7..ed79b69837de 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1559,7 +1559,7 @@ static bool hwpoison_user_mappings(struct page *p, unsigned long pfn,
* Here we are interested only in user-mapped pages, so skip any
* other types of pages.
*/
- if (PageReserved(p) || PageSlab(p) || PageTable(p))
+ if (PageReserved(p) || PageSlab(p) || PageTable(p) || PageOffline(p))
return true;
if (!(PageLRU(hpage) || PageHuge(p)))
return true;
@@ -2513,7 +2513,8 @@ int unpoison_memory(unsigned long pfn)
goto unlock_mutex;
}

- if (folio_test_slab(folio) || PageTable(&folio->page) || folio_test_reserved(folio))
+ if (folio_test_slab(folio) || PageTable(&folio->page) ||
+ folio_test_reserved(folio) || PageOffline(&folio->page))
goto unlock_mutex;

/*
--
2.33.0