diff options
| -rw-r--r-- | mm/memory-failure.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c index db08af92c6fc..fabe55046c1d 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -938,6 +938,16 @@ static int hwpoison_user_mappings(struct page *p, unsigned long pfn, BUG_ON(!PageHWPoison(p)); return SWAP_FAIL; } + /* + * We pinned the head page for hwpoison handling, + * now we split the thp and we are interested in + * the hwpoisoned raw page, so move the refcount + * to it. + */ + if (hpage != p) { + put_page(hpage); + get_page(p); + } /* THP is split, so ppage should be the real poisoned page. */ ppage = p; } |