From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 683B6223710; Thu, 17 Apr 2025 18:11:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744913517; cv=none; b=FtFkpDj/icnh5KeGtFMoeyREk6oQhhNmsSB2pput2u4n6zvXYsS4u7GEzSBPK4/PJ6z/iV6w9Ys9MO0eb/dlWlk0a1G2KniPlyj9brN6acYCkEDlXd3BqB4J7ejpBmay/N37R8pyeqGYiEBwwqE9eoV9szKt25gudQq2wKM+FaE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744913517; c=relaxed/simple; bh=eFYZ97EzyIDwA1UUOUW1Hr//JfE/6+xDSh4+0Hsbwe0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=M/sqO5SkskUW2U3OWYuhT0vFFrspUhboWWb+33BnETTHjNYnLeWH/lk9VajG74niNOZs6ZqYKTYP/r3zrTFAdWTi+MqFbNcg0s0c29rSBs2YGy0ancfTejkvxVIoevinsv4V8lpQ1W6+5WpKU48uPJRAUq/OXXrfd217lrCxGxc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=j8QWRrRP; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="j8QWRrRP" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C2880C4CEE4; Thu, 17 Apr 2025 18:11:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1744913517; bh=eFYZ97EzyIDwA1UUOUW1Hr//JfE/6+xDSh4+0Hsbwe0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=j8QWRrRPlew5HqYfUMDA6rovP5PkBjRYhNLObdQDW5tT+WDmMMr0tO27NjybNAYej sigCI4ldsaVBblHknp8wtieNnR8ndZO1gKi1pRI3GZ3N5vc9vQwywF12PGQOYeAeem u22mHXizz+jru6W/CQYBuTogSDcw7NnAyvK7cNvo= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jinjiang Tu , Miaohe Lin , David Hildenbrand , Kefeng Wang , Nanyong Sun , Naoya Horiguchi , Andrew Morton Subject: [PATCH 6.14 366/449] mm/hwpoison: introduce folio_contain_hwpoisoned_page() helper Date: Thu, 17 Apr 2025 19:50:54 +0200 Message-ID: <20250417175132.970733146@linuxfoundation.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250417175117.964400335@linuxfoundation.org> References: <20250417175117.964400335@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Jinjiang Tu commit 5f5ee52d4f58605330b09851273d6e56aaadd29e upstream. Patch series "mm/vmscan: don't try to reclaim hwpoison folio". Fix a bug during memory reclaim if folio is hwpoisoned. This patch (of 2): Introduce helper folio_contain_hwpoisoned_page() to check if the entire folio is hwpoisoned or it contains hwpoisoned pages. Link: https://lkml.kernel.org/r/20250318083939.987651-1-tujinjiang@huawei.com Link: https://lkml.kernel.org/r/20250318083939.987651-2-tujinjiang@huawei.com Signed-off-by: Jinjiang Tu Acked-by: Miaohe Lin Cc: David Hildenbrand Cc: Kefeng Wang Cc: Nanyong Sun Cc: Naoya Horiguchi Cc: Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- include/linux/page-flags.h | 6 ++++++ mm/memory_hotplug.c | 3 +-- mm/shmem.c | 3 +-- 3 files changed, 8 insertions(+), 4 deletions(-) --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -1104,6 +1104,12 @@ static inline bool is_page_hwpoison(cons return folio_test_hugetlb(folio) && PageHWPoison(&folio->page); } +static inline bool folio_contain_hwpoisoned_page(struct folio *folio) +{ + return folio_test_hwpoison(folio) || + (folio_test_large(folio) && folio_test_has_hwpoisoned(folio)); +} + bool is_free_buddy_page(const struct page *page); PAGEFLAG(Isolated, isolated, PF_ANY); --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1828,8 +1828,7 @@ static void do_migrate_range(unsigned lo if (unlikely(page_folio(page) != folio)) goto put_folio; - if (folio_test_hwpoison(folio) || - (folio_test_large(folio) && folio_test_has_hwpoisoned(folio))) { + if (folio_contain_hwpoisoned_page(folio)) { if (WARN_ON(folio_test_lru(folio))) folio_isolate_lru(folio); if (folio_mapped(folio)) { --- a/mm/shmem.c +++ b/mm/shmem.c @@ -3302,8 +3302,7 @@ shmem_write_begin(struct file *file, str if (ret) return ret; - if (folio_test_hwpoison(folio) || - (folio_test_large(folio) && folio_test_has_hwpoisoned(folio))) { + if (folio_contain_hwpoisoned_page(folio)) { folio_unlock(folio); folio_put(folio); return -EIO;