mm/memory-failure: fix comment of get_hwpoison_page()

When return value is 0, it could also means the page is free hugetlb page
or free buddy page.  Fix the corresponding comment.

Link: https://lkml.kernel.org/r/20240612071835.157004-12-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Borislav Petkov (AMD) <bp@alien8.de>
Cc: David Hildenbrand <david@redhat.com>
Cc: kernel test robot <lkp@intel.com>
Cc: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Miaohe Lin 2024-06-12 15:18:33 +08:00 committed by Andrew Morton
parent 3a78f77fd1
commit b71340ef56

View File

@ -1525,7 +1525,7 @@ static int __get_unpoison_page(struct page *page)
* the given page has PG_hwpoison. So it's never reused for other page
* allocations, and __get_unpoison_page() never races with them.
*
* Return: 0 on failure,
* Return: 0 on failure or free buddy (hugetlb) page,
* 1 on success for in-use pages in a well-defined state,
* -EIO for pages on which we can not handle memory errors,
* -EBUSY when get_hwpoison_page() has raced with page lifecycle