From nobody Mon Feb 9 04:29:10 2026 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 3F79D381BB for ; Wed, 20 Mar 2024 07:37:49 +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=1710920270; cv=none; b=eal3VOeypM6LpbZAD3R1NR9YPmMt5gkP8AchD6oo2aEvlEEYW+Lj+2JjcWOJ1jkykCp3hs55r8HRCVV5vg+oqEwWcUW0XFyIl3Kky0KjNQnAq6LUyhYyhEnjEd5MzSJjbeGFUvBzUvpMSNnpVVaX8XD9EaL4bDxbxAhlCmDqrpc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710920270; c=relaxed/simple; bh=o9GRn+UUdxaobJAptmjj5VgVz5sUBp61iu84lZ36vgk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=OOfAAm0y7Wfj3yp4qbvKMvIFNghtgmXmSTYuFeu+BcFxd3aN7eEE2wFvKsGKkxAE/+ibcMe9e+T6ZFbSd0/teTrKb7dgAKDeHt04eBxSyfqelosrPqJFvarjGSZInDFwEdo7WMNGhFAxUa6EQuK7zJWEm/elJzAsryadaorMlJo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=YI8Hv6Xm; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="YI8Hv6Xm" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5001CC43394; Wed, 20 Mar 2024 07:37:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1710920269; bh=o9GRn+UUdxaobJAptmjj5VgVz5sUBp61iu84lZ36vgk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YI8Hv6Xm0jtVWQtKp1cEyat0wmWHkY/j8Kn9DULx7rBhfbctCAntP1sNzBbd/Bgxf GKK43+qd3J6n4vPv1LSUBWx7F0jGccn4GAjoLM7vsPEws0j8wqHcpLDkSqObqPUuVx S00afiEWDkzZAspltpRvm6n9CzWLkZZD+sF6Yv437TNRj14g+lzb+lT9VmbZKVVdi0 S0FJt5H5PXEH4w1WFjdRasWZANKxZgTMKd0TGJwcL18EO4qG0Z+afEB0r2hCI/K5mL QKchWwWwSDnOFXDVHupER88Io9H7AnuzjlMcmemfsbxURM5CC2DJV+0FmKEL2WDgAX 1i5wfHTNMdfWA== From: alexs@kernel.org To: Izik Eidus , Matthew Wilcox , Andrea Arcangeli , Hugh Dickins , Chris Wright , kasong@tencent.com, Andrew Morton , linux-mm@kvack.org (open list:MEMORY MANAGEMENT), linux-kernel@vger.kernel.org (open list) Cc: linux-kernel@vger.kernel.org, "Alex Shi (tencent)" Subject: [PATCH 04/11] mm/ksm: use folio in stable_node_dup Date: Wed, 20 Mar 2024 15:40:40 +0800 Message-ID: <20240320074049.4130552-5-alexs@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240320074049.4130552-1-alexs@kernel.org> References: <20240320074049.4130552-1-alexs@kernel.org> 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" From: "Alex Shi (tencent)" Save 2 compound_head calls. Signed-off-by: Alex Shi (tencent) Cc: Izik Eidus Cc: Matthew Wilcox Cc: Andrea Arcangeli Cc: Hugh Dickins Cc: Chris Wright --- mm/ksm.c | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/mm/ksm.c b/mm/ksm.c index 9ea9b5ac44b4..f57817ef75bf 100644 --- a/mm/ksm.c +++ b/mm/ksm.c @@ -1617,14 +1617,14 @@ bool is_page_sharing_candidate(struct ksm_stable_no= de *stable_node) return __is_page_sharing_candidate(stable_node, 0); } =20 -static struct page *stable_node_dup(struct ksm_stable_node **_stable_node_= dup, - struct ksm_stable_node **_stable_node, - struct rb_root *root, - bool prune_stale_stable_nodes) +static void *stable_node_dup(struct ksm_stable_node **_stable_node_dup, + struct ksm_stable_node **_stable_node, + struct rb_root *root, + bool prune_stale_stable_nodes) { struct ksm_stable_node *dup, *found =3D NULL, *stable_node =3D *_stable_n= ode; struct hlist_node *hlist_safe; - struct page *_tree_page, *tree_page =3D NULL; + struct folio *folio, *tree_folio =3D NULL; int nr =3D 0; int found_rmap_hlist_len; =20 @@ -1649,18 +1649,18 @@ static struct page *stable_node_dup(struct ksm_stab= le_node **_stable_node_dup, * stable_node parameter itself will be freed from * under us if it returns NULL. */ - _tree_page =3D get_ksm_page(dup, GET_KSM_PAGE_NOLOCK); - if (!_tree_page) + folio =3D get_ksm_page(dup, GET_KSM_PAGE_NOLOCK); + if (!folio) continue; nr +=3D 1; if (is_page_sharing_candidate(dup)) { if (!found || dup->rmap_hlist_len > found_rmap_hlist_len) { if (found) - put_page(tree_page); + folio_put(tree_folio); found =3D dup; found_rmap_hlist_len =3D found->rmap_hlist_len; - tree_page =3D _tree_page; + tree_folio =3D folio; =20 /* skip put_page for found dup */ if (!prune_stale_stable_nodes) @@ -1668,7 +1668,7 @@ static struct page *stable_node_dup(struct ksm_stable= _node **_stable_node_dup, continue; } } - put_page(_tree_page); + folio_put(folio); } =20 if (found) { @@ -1733,7 +1733,7 @@ static struct page *stable_node_dup(struct ksm_stable= _node **_stable_node_dup, } =20 *_stable_node_dup =3D found; - return tree_page; + return tree_folio; } =20 static struct ksm_stable_node *stable_node_dup_any(struct ksm_stable_node = *stable_node, --=20 2.43.0