From nobody Tue Sep 16 00:48:31 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3CF3BC54EBD for ; Mon, 9 Jan 2023 17:08:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237185AbjAIRIN (ORCPT ); Mon, 9 Jan 2023 12:08:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33748 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237154AbjAIRHj (ORCPT ); Mon, 9 Jan 2023 12:07:39 -0500 Received: from mail-wr1-x435.google.com (mail-wr1-x435.google.com [IPv6:2a00:1450:4864:20::435]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D2F2C3FA32; Mon, 9 Jan 2023 09:06:47 -0800 (PST) Received: by mail-wr1-x435.google.com with SMTP id m7so8875972wrn.10; Mon, 09 Jan 2023 09:06:47 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=gCW9hGwXYkgWMlftGJTpxYD0tpe8j+WfiIQir4l86co=; b=H9k0NCEKDeLmIFuil7aYpf60LDUgsnUVBOLLoaNJ21ah+wWWV2hFJVeakPLokoZ5Yx m6LIOG6Resh3isUjn1ToryFtTe7VB08C5+rTVU9Fax2p1a0PsEEbI5VX74JzWouTcurK TdrrNyMOyZp7VRoIU14Lv3rZvpvceTJrs+Zi3EMhSnnC+rPBdfVA2DnrnnEyhrKJcUze w1Fbz6A5u+xzSuop9r2Jt2DfJwSX/2fRurS7PTghwuFY1TW4SsvUUVuHII3B4nhR/Ncp BD4dRUjleM8hEQ3FnPSwbrNhaoGUju0gM7I/fYtG6VGPC/YlmLpLnmqH3r0rzF0k6cN4 ibTw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=gCW9hGwXYkgWMlftGJTpxYD0tpe8j+WfiIQir4l86co=; b=Lu9RZ/2KX/9m8UhmROyaM0OmTwSQuMXdCl3sEXa4VQNDYe3vvFqzn/0IOg56+R21Uh MFI6tmvkOjFi1s+i6miJxzX3YxTzEyUbxLl2QGaOWXV21/9epcGNCIYPB5wNmrxalklJ Z/niwx5pM4ygb4DKwg94X8tp125tt3U1Qr+FpdfuzYdJSeALS38GMQG3em/pXkKULXy1 rBWl7omk7cvadLWmeMDab7jp0Y+FbQ62ITMpQkzHMOGcpQgsdrqK5DIugDy9PW58uZuR eptqyWc00j8Eo+fSktcqQwjrq0p/xsCDTjmnl2AZJud36W4XpBo5TvhGhWTP72S0QEf+ eRjw== X-Gm-Message-State: AFqh2kpoyuC/ANg94GsPGP1FvbUSRSsyG+ulTsDeLMWoZVlQU+o+TTxa nyCDocCk2WTKM6LXSCMXRZvTdUG9M+c= X-Google-Smtp-Source: AMrXdXu5BSPvAB5e/ZwoDfluSG7dU+KPKdwuQwSPOAO9sr2BLgggyL5bW6C2rusTF3Fwc7mp2vjhOQ== X-Received: by 2002:a5d:4402:0:b0:2bb:f46f:c136 with SMTP id z2-20020a5d4402000000b002bbf46fc136mr3283198wrq.23.1673284006435; Mon, 09 Jan 2023 09:06:46 -0800 (PST) Received: from localhost.localdomain (host-79-13-98-249.retail.telecomitalia.it. [79.13.98.249]) by smtp.gmail.com with ESMTPSA id n10-20020a5d6b8a000000b002425787c5easm8954527wrx.96.2023.01.09.09.06.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 Jan 2023 09:06:45 -0800 (PST) From: "Fabio M. De Francesco" To: Christoph Hellwig , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Al Viro , Ira Weiny Cc: "Fabio M. De Francesco" Subject: [PATCH v2 1/4] fs/sysv: Use the offset_in_page() helper Date: Mon, 9 Jan 2023 18:06:36 +0100 Message-Id: <20230109170639.19757-2-fmdefrancesco@gmail.com> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230109170639.19757-1-fmdefrancesco@gmail.com> References: <20230109170639.19757-1-fmdefrancesco@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Use the offset_in_page() helper because it is more suitable than doing explicit subtractions between pointers to directory entries and kernel virtual addresses of mapped pages. Cc: Ira Weiny Suggested-by: Al Viro Signed-off-by: Fabio M. De Francesco --- No changes from v1. fs/sysv/dir.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/fs/sysv/dir.c b/fs/sysv/dir.c index 88e38cd8f5c9..685379bc9d64 100644 --- a/fs/sysv/dir.c +++ b/fs/sysv/dir.c @@ -206,8 +206,7 @@ int sysv_add_link(struct dentry *dentry, struct inode *= inode) return -EINVAL; =20 got_it: - pos =3D page_offset(page) + - (char*)de - (char*)page_address(page); + pos =3D page_offset(page) + offset_in_page(de); lock_page(page); err =3D sysv_prepare_chunk(page, pos, SYSV_DIRSIZE); if (err) @@ -230,8 +229,7 @@ int sysv_add_link(struct dentry *dentry, struct inode *= inode) int sysv_delete_entry(struct sysv_dir_entry *de, struct page *page) { struct inode *inode =3D page->mapping->host; - char *kaddr =3D (char*)page_address(page); - loff_t pos =3D page_offset(page) + (char *)de - kaddr; + loff_t pos =3D page_offset(page) + offset_in_page(de); int err; =20 lock_page(page); @@ -328,8 +326,7 @@ void sysv_set_link(struct sysv_dir_entry *de, struct pa= ge *page, struct inode *inode) { struct inode *dir =3D page->mapping->host; - loff_t pos =3D page_offset(page) + - (char *)de-(char*)page_address(page); + loff_t pos =3D page_offset(page) + offset_in_page(de); int err; =20 lock_page(page); --=20 2.39.0