On 24.05.24 11:13, Miaohe Lin wrote:
> Since commit 130d4df57390 ("mm/sl[au]b: rearrange struct slab fields to
> allow larger rcu_head"), folio->_mapcount is not overloaded with SLAB.
> Update corresponding comment.
>
> Signed-off-by: Miaohe Lin <[email protected]>
> ---
> mm/memory-failure.c | 4 ----
> 1 file changed, 4 deletions(-)
>
> diff --git a/mm/memory-failure.c b/mm/memory-failure.c
> index 19d338e83e43..e4252f297d41 100644
> --- a/mm/memory-failure.c
> +++ b/mm/memory-failure.c
> @@ -2610,10 +2610,6 @@ int unpoison_memory(unsigned long pfn)
> folio_test_reserved(folio) || folio_test_offline(folio))
> goto unlock_mutex;
>
> - /*
> - * Note that folio->_mapcount is overloaded in SLAB, so the simple test
> - * in folio_mapped() has to be done after folio_test_slab() is checked.
> - */
> if (folio_mapped(folio)) {
> unpoison_pr_info("Unpoison: Someone maps the hwpoison page %#lx\n",
> pfn, &unpoison_rs);
Reviewed-by: David Hildenbrand <[email protected]>
--
Cheers,
David / dhildenb