From nobody Sun Oct 5 03:40:29 2025 Received: from todd.t-8ch.de (todd.t-8ch.de [159.69.126.157]) (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 842462D879E for ; Mon, 11 Aug 2025 09:13:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.69.126.157 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754903628; cv=none; b=Tb2ALXS2Ti3jDAFrEL04WXQdAOyzMfS8qGRXGPuD/EHpWVnCtAoFAmiJedPe3BRLCC3JUKrT9wNKzNRkDNUPjQQsXYxtJWWaxyPodtvV9Rl/xIxZQrICm+rROb39E1awpzcsrYKFlYxSIbp6VcgUypbMHf/BafsFtKAwwL3SFUk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754903628; c=relaxed/simple; bh=iekIAGW0UsF8//RNDamHUGyAsZiPy7PMaYbRRyQjG8I=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=bnHFpEIoOJmB9onCeE08bI99WM4bRUN0bVg+VWihytifqGLxIlDSXQ+x8On/YB0sx9VO29fQmrVHrCAcDn956gF0CGafiv82C1l2WqqcVcopcTfAvflBjmKFry/oDvSl5yZg7G/dIFwQ14R54mTPAXZcMkbvaqwECT6Yn2WvQq8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net; spf=pass smtp.mailfrom=weissschuh.net; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b=MRFRao6O; arc=none smtp.client-ip=159.69.126.157 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b="MRFRao6O" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=weissschuh.net; s=mail; t=1754903617; bh=iekIAGW0UsF8//RNDamHUGyAsZiPy7PMaYbRRyQjG8I=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=MRFRao6OLGbicVc72fOl0dSSCdye2Vkm0mQJX1Tyth7LUDzpIgeJge6Bo62dNNN5M iwTrQMjm6s5S68fJav9h/oCNGKVuODxFYxBkhYcZnYK33yQ/g6brAsM5qlDZUaG48f b20Z+PxgPTOsCYvuqDzSHKRqsCK1TrRr89LYp5n4= From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Date: Mon, 11 Aug 2025 11:13:35 +0200 Subject: [PATCH v4 1/2] sysfs: remove bin_attribute::read_new/write_new() Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250811-sysfs-const-bin_attr-final-v4-1-7b6053fd58bb@weissschuh.net> References: <20250811-sysfs-const-bin_attr-final-v4-0-7b6053fd58bb@weissschuh.net> In-Reply-To: <20250811-sysfs-const-bin_attr-final-v4-0-7b6053fd58bb@weissschuh.net> To: Greg Kroah-Hartman , "Rafael J. Wysocki" , Danilo Krummrich Cc: linux-kernel@vger.kernel.org, =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1754903617; l=2955; i=linux@weissschuh.net; s=20221212; h=from:subject:message-id; bh=iekIAGW0UsF8//RNDamHUGyAsZiPy7PMaYbRRyQjG8I=; b=pYn+gxuLAitr+XHITanarGf978dAzViQ+LQcoKLNvGdwVZ/TYlh+yLZ5ystP+xOtGh4iezQIs O3wLNxG6CX1A6rUZV+BgnebEccbqz7ZrhtyR+LhBOJTeBqIeytLhs6/ X-Developer-Key: i=linux@weissschuh.net; a=ed25519; pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw= These transitional fields are now unused and unnecessary. Remove them and their logic in the sysfs core. Signed-off-by: Thomas Wei=C3=9Fschuh --- fs/sysfs/file.c | 22 +++++----------------- include/linux/sysfs.h | 4 ---- 2 files changed, 5 insertions(+), 21 deletions(-) diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c index 1ca143d2f22ad2d6b0b74b261514f8bc3cb5153c..3825e780cc580df4a1a511d12b3= ee3fa2e6bdb37 100644 --- a/fs/sysfs/file.c +++ b/fs/sysfs/file.c @@ -97,12 +97,9 @@ static ssize_t sysfs_kf_bin_read(struct kernfs_open_file= *of, char *buf, count =3D size - pos; } =20 - if (!battr->read && !battr->read_new) + if (!battr->read) return -EIO; =20 - if (battr->read_new) - return battr->read_new(of->file, kobj, battr, buf, pos, count); - return battr->read(of->file, kobj, battr, buf, pos, count); } =20 @@ -161,12 +158,9 @@ static ssize_t sysfs_kf_bin_write(struct kernfs_open_f= ile *of, char *buf, if (!count) return 0; =20 - if (!battr->write && !battr->write_new) + if (!battr->write) return -EIO; =20 - if (battr->write_new) - return battr->write_new(of->file, kobj, battr, buf, pos, count); - return battr->write(of->file, kobj, battr, buf, pos, count); } =20 @@ -335,19 +329,13 @@ int sysfs_add_bin_file_mode_ns(struct kernfs_node *pa= rent, const struct kernfs_ops *ops; struct kernfs_node *kn; =20 - if (battr->read && battr->read_new) - return -EINVAL; - - if (battr->write && battr->write_new) - return -EINVAL; - if (battr->mmap) ops =3D &sysfs_bin_kfops_mmap; - else if ((battr->read || battr->read_new) && (battr->write || battr->writ= e_new)) + else if (battr->read && battr->write) ops =3D &sysfs_bin_kfops_rw; - else if (battr->read || battr->read_new) + else if (battr->read) ops =3D &sysfs_bin_kfops_ro; - else if (battr->write || battr->write_new) + else if (battr->write) ops =3D &sysfs_bin_kfops_wo; else ops =3D &sysfs_file_kfops_empty; diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h index f418aae4f1134f8126783d9e8eb575ba4278e927..7544f6d81c05982b5d168624f37= 6cd647127ab51 100644 --- a/include/linux/sysfs.h +++ b/include/linux/sysfs.h @@ -308,12 +308,8 @@ struct bin_attribute { struct address_space *(*f_mapping)(void); ssize_t (*read)(struct file *, struct kobject *, const struct bin_attribu= te *, char *, loff_t, size_t); - ssize_t (*read_new)(struct file *, struct kobject *, const struct bin_att= ribute *, - char *, loff_t, size_t); ssize_t (*write)(struct file *, struct kobject *, const struct bin_attrib= ute *, char *, loff_t, size_t); - ssize_t (*write_new)(struct file *, struct kobject *, - const struct bin_attribute *, char *, loff_t, size_t); loff_t (*llseek)(struct file *, struct kobject *, const struct bin_attrib= ute *, loff_t, int); int (*mmap)(struct file *, struct kobject *, const struct bin_attribute *= attr, --=20 2.50.1