From nobody Thu Apr 9 17:59:13 2026 Received: from mail.ilvokhin.com (mail.ilvokhin.com [178.62.254.231]) (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 84B353ECBFF for ; Fri, 6 Mar 2026 16:06:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=178.62.254.231 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772813191; cv=none; b=sQtRFXWMh8RX9tNU7lFe03MSOUs9PogJoPYem4YiTHXiNi7iFUsV9hozHbdZWXFRtk98eoZqZReHzz6QjwcGfnWwiIaQEXUPV1PIhle/O/WUjjGfzm/BVF5dZaFZUDNEuTJJrpBaxuR0Hv5C9O1I9aqoKCm8GlOKm8oDbxHSJqs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772813191; c=relaxed/simple; bh=1yUiUsKIOG9ab5xdXoZavPxUcpD9suELoBvAzpipGCU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=nfmPszwnAYRrPplR01FqonwzjBC2LB8aEw0SU6qCC/f5jxQBI/DI+TNTtXicYY6n//pI4/U00C8pnBo5O/36TJgQ8KrtzEqaG9jvRM2Bxrj7ni2bt9uaiMsvsE5mRDSbyrcYYqtHdsPQN8KTpLfwwOkDgK5P8DbyiFtYULyhbRs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=ilvokhin.com; spf=pass smtp.mailfrom=ilvokhin.com; dkim=pass (1024-bit key) header.d=ilvokhin.com header.i=@ilvokhin.com header.b=TmVIOGiv; arc=none smtp.client-ip=178.62.254.231 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=ilvokhin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ilvokhin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ilvokhin.com header.i=@ilvokhin.com header.b="TmVIOGiv" Received: from localhost.localdomain (shell.ilvokhin.com [138.68.190.75]) (Authenticated sender: d@ilvokhin.com) by mail.ilvokhin.com (Postfix) with ESMTPSA id 60685B3455; Fri, 06 Mar 2026 16:06:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ilvokhin.com; s=mail; t=1772813186; bh=1V1/Uxk3C2b3bmWZW0aYP3fQUiU0/LLNtlQCW3eW0iw=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=TmVIOGivH45S62A2GhBBGobf6V3PhxrFmTuo47eRyaYhCBjTLIcvP/JoSpnhfTY+1 PWjTK7mJQSK8f+EpQ9cgd17HyRNqZsjLYRuIHqTBc1ndR46t3MDo8EJqcSJaPAQXBb F3P4BEEX/CdDEWMEbpZoecQ2jmolWzPmaeGHM8DM= From: Dmitry Ilvokhin To: Andrew Morton , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Brendan Jackman , Johannes Weiner , Zi Yan Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, kernel-team@meta.com, Dmitry Ilvokhin , Steven Rostedt Subject: [PATCH 8/8] mm: use zone lock guard in __offline_isolated_pages() Date: Fri, 6 Mar 2026 16:05:42 +0000 Message-ID: X-Mailer: git-send-email 2.53.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Use zone_lock_irqsave lock guard in __offline_isolated_pages() to replace the explicit lock/unlock pattern with automatic scope-based cleanup. Suggested-by: Steven Rostedt Signed-off-by: Dmitry Ilvokhin --- mm/page_alloc.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 2759e02340fa..6f7420e4431f 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -7380,7 +7380,7 @@ void zone_pcp_reset(struct zone *zone) unsigned long __offline_isolated_pages(unsigned long start_pfn, unsigned long end_pfn) { - unsigned long already_offline =3D 0, flags; + unsigned long already_offline =3D 0; unsigned long pfn =3D start_pfn; struct page *page; struct zone *zone; @@ -7388,7 +7388,7 @@ unsigned long __offline_isolated_pages(unsigned long = start_pfn, =20 offline_mem_sections(pfn, end_pfn); zone =3D page_zone(pfn_to_page(pfn)); - zone_lock_irqsave(zone, flags); + guard(zone_lock_irqsave)(zone); while (pfn < end_pfn) { page =3D pfn_to_page(pfn); /* @@ -7418,7 +7418,6 @@ unsigned long __offline_isolated_pages(unsigned long = start_pfn, del_page_from_free_list(page, zone, order, MIGRATE_ISOLATE); pfn +=3D (1 << order); } - zone_unlock_irqrestore(zone, flags); =20 return end_pfn - start_pfn - already_offline; } --=20 2.47.3