The patch titled
Subject: mm/memory-failure: fix comment of get_hwpoison_page()
has been added to the -mm mm-unstable branch. Its filename is
mm-memory-failure-fix-comment-of-get_hwpoison_page.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-memory-failure-fix-comment-of-get_hwpoison_page.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Subject: mm/memory-failure: fix comment of get_hwpoison_page()
Date: Wed, 12 Jun 2024 15:18:33 +0800
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@xxxxxxxxxx
Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Cc: Borislav Petkov (AMD) <bp@xxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: kernel test robot <lkp@xxxxxxxxx>
Cc: Naoya Horiguchi <nao.horiguchi@xxxxxxxxx>
Cc: Tony Luck <tony.luck@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory-failure.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/memory-failure.c~mm-memory-failure-fix-comment-of-get_hwpoison_page
+++ a/mm/memory-failure.c
@@ -1525,7 +1525,7 @@ static int __get_unpoison_page(struct pa
* 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
_
Patches currently in -mm which might be from linmiaohe@xxxxxxxxxx are
mm-memory-failure-simplify-put_ref_page.patch
mm-memory-failure-remove-mf_msg_slab.patch
mm-memory-failure-add-macro-get_page_max_retry_num.patch
mm-memory-failure-save-some-page_folio-calls.patch
mm-memory-failure-remove-unneeded-empty-string.patch
mm-memory-failure-remove-confusing-initialization-to-count.patch
mm-memory-failure-dont-export-hwpoison_filter-when-config_hwpoison_inject.patch
mm-memory-failure-use-helper-macro-task_pid_nr.patch
mm-memory-failure-remove-obsolete-comment-in-unpoison_memory.patch
mm-memory-failure-move-some-function-declarations-into-internalh.patch
mm-memory-failure-fix-comment-of-get_hwpoison_page.patch
mm-memory-failure-remove-obsolete-comment-in-kill_proc.patch
mm-memory-failure-correct-comment-in-me_swapcache_dirty.patch
