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| author | Miaohe Lin <linmiaohe@huawei.com> | 2022-03-22 22:44:35 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-03-22 23:57:07 +0100 |
| commit | a581865ecd0a5a0b8464d6f1e668ae6681c1572f (patch) | |
| tree | 6048c1370fdd028d364da3997ad30c7b1f584994 | |
| parent | mm/memory-failure.c: remove unnecessary PageTransTail check (diff) | |
| download | linux-a581865ecd0a5a0b8464d6f1e668ae6681c1572f.tar.xz linux-a581865ecd0a5a0b8464d6f1e668ae6681c1572f.zip | |
mm/hwpoison-inject: support injecting hwpoison to free page
memory_failure() can handle free buddy page. Support injecting hwpoison
to free page by adding is_free_buddy_page check when hwpoison filter is
disabled.
[akpm@linux-foundation.org: export is_free_buddy_page() to modules]
Link: https://lkml.kernel.org/r/20220218092052.3853-1-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Naoya Horiguchi <naoya.horiguchi@nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/hwpoison-inject.c | 4 | ||||
| -rw-r--r-- | mm/page_alloc.c | 1 |
2 files changed, 3 insertions, 2 deletions
diff --git a/mm/hwpoison-inject.c b/mm/hwpoison-inject.c index aff4d27ec235..f74552977649 100644 --- a/mm/hwpoison-inject.c +++ b/mm/hwpoison-inject.c @@ -32,9 +32,9 @@ static int hwpoison_inject(void *data, u64 val) shake_page(hpage); /* - * This implies unable to support non-LRU pages. + * This implies unable to support non-LRU pages except free page. */ - if (!PageLRU(hpage) && !PageHuge(p)) + if (!PageLRU(hpage) && !PageHuge(p) && !is_free_buddy_page(p)) return 0; /* diff --git a/mm/page_alloc.c b/mm/page_alloc.c index e36d7631a64c..a573aa9f5160 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -9417,6 +9417,7 @@ bool is_free_buddy_page(struct page *page) return order < MAX_ORDER; } +EXPORT_SYMBOL(is_free_buddy_page); #ifdef CONFIG_MEMORY_FAILURE /* |