[merged] mm-hwpoison-inject-support-injecting-hwpoison-to-free-page.patch removed from -mm tree

[merged] mm-hwpoison-inject-support-injecting-hwpoison-to-free-page.patch removed from -mm tree

[Andrew Morton]

The patch titled
     Subject: mm/hwpoison-inject: support injecting hwpoison to free page
has been removed from the -mm tree.  Its filename was
     mm-hwpoison-inject-support-injecting-hwpoison-to-free-page.patch

This patch was dropped because it was merged into mainline or a subsystem tree

------------------------------------------------------
From: Miaohe Lin <linmiaohe@huawei.com>
Subject: 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>
---

 mm/hwpoison-inject.c |    4 ++--
 mm/page_alloc.c      |    1 +
 2 files changed, 3 insertions(+), 2 deletions(-)

--- a/mm/hwpoison-inject.c~mm-hwpoison-inject-support-injecting-hwpoison-to-free-page
+++ a/mm/hwpoison-inject.c
@@ -32,9 +32,9 @@ static int hwpoison_inject(void *data, u
 
 	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;
 
 	/*
--- a/mm/page_alloc.c~mm-hwpoison-inject-support-injecting-hwpoison-to-free-page
+++ a/mm/page_alloc.c
@@ -9417,6 +9417,7 @@ bool is_free_buddy_page(struct page *pag
 
 	return order < MAX_ORDER;
 }
+EXPORT_SYMBOL(is_free_buddy_page);
 
 #ifdef CONFIG_MEMORY_FAILURE
 /*
_

Patches currently in -mm which might be from linmiaohe@huawei.com are

mm-huge_memory-make-is_transparent_hugepage-static.patch