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-rw-r--r--mm/page_io.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/page_io.c b/mm/page_io.c
index 3b97f685027..065c4480eaf 100644
--- a/mm/page_io.c
+++ b/mm/page_io.c
@@ -126,7 +126,7 @@ int swap_readpage(struct file *file, struct page *page)
int ret = 0;
BUG_ON(!PageLocked(page));
- ClearPageUptodate(page);
+ BUG_ON(PageUptodate(page));
bio = get_swap_bio(GFP_KERNEL, page_private(page), page,
end_swap_bio_read);
if (bio == NULL) {