From patchwork Wed Jun 1 20:44:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gabriel Krisman Bertazi X-Patchwork-Id: 12867209 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 7629EC43334 for ; Wed, 1 Jun 2022 20:48:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230417AbiFAUsl (ORCPT ); Wed, 1 Jun 2022 16:48:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44698 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230118AbiFAUsE (ORCPT ); Wed, 1 Jun 2022 16:48:04 -0400 Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [46.235.227.227]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B38FB27D0FC; Wed, 1 Jun 2022 13:45:02 -0700 (PDT) Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: krisman) with ESMTPSA id 452BA1F4394C DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1654116299; bh=QTM2y9smEdZYIXwJ+bdg4VmJ/jF3wm5qE0XMmetiWjI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=h49m/n59xKW6nHMlGcysHhGPofAz4PIP4jPDzNTN5t/SXgwxQzoXD+JA4xeKsdIcF rj91KVJ2PHVbc7qaUMJlIkNSzvUondrn5ruu7RjUJmi0U+gUGXTnGqMCSUOPdXusQw 4YISWMPtAnr2tBjDtxZ4wzwW6lwxqntdoLwGikCm6F7jCPJfSy8Iq86u7RsH3hIBy1 QfVXz9rdefOGp/+pVNlVXkgLYqY6w9mbp54ylf5yvT66uV7QgY/QFNmaglf8gbUyzp t5YNb6ZaP+86W6bU6Udke+DIAggSSWXaf27AN9sER6taAVcuH8uKbvQG4ajbIFSfKH iXElV95hPBWFg== From: Gabriel Krisman Bertazi To: viro@zeniv.linux.org.uk, tytso@mit.edu, jaegeuk@kernel.org Cc: ebiggers@kernel.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, Gabriel Krisman Bertazi , kernel@collabora.com Subject: [PATCH RFC 5/7] libfs: Merge encrypted_ci_dentry_ops and ci_dentry_ops Date: Wed, 1 Jun 2022 16:44:35 -0400 Message-Id: <20220601204437.676872-6-krisman@collabora.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220601204437.676872-1-krisman@collabora.com> References: <20220601204437.676872-1-krisman@collabora.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Now that casefold needs d_revalidate and calls fscrypt_d_revalidate itself, generic_encrypt_ci_dentry_ops and generic_ci_dentry_ops are now equivalent. Merge them together and simplify the setup code. Signed-off-by: Gabriel Krisman Bertazi --- fs/libfs.c | 44 +++++++++++++------------------------------- 1 file changed, 13 insertions(+), 31 deletions(-) diff --git a/fs/libfs.c b/fs/libfs.c index fe22738291e4..9d91f471203a 100644 --- a/fs/libfs.c +++ b/fs/libfs.c @@ -1477,7 +1477,7 @@ static inline int generic_ci_d_revalidate(struct dentry *dentry, return fscrypt_d_revalidate(dentry, flags); } -static const struct dentry_operations generic_ci_dentry_ops = { +static const struct dentry_operations generic_encrypted_ci_dentry_ops = { .d_hash = generic_ci_d_hash, .d_compare = generic_ci_d_compare, .d_revalidate_name = generic_ci_d_revalidate, @@ -1490,26 +1490,20 @@ static const struct dentry_operations generic_encrypted_dentry_ops = { }; #endif -#if defined(CONFIG_FS_ENCRYPTION) && IS_ENABLED(CONFIG_UNICODE) -static const struct dentry_operations generic_encrypted_ci_dentry_ops = { - .d_hash = generic_ci_d_hash, - .d_compare = generic_ci_d_compare, - .d_revalidate_name = generic_ci_d_revalidate, -}; -#endif - /** * generic_set_encrypted_ci_d_ops - helper for setting d_ops for given dentry * @dentry: dentry to set ops on * - * Casefolded directories need d_hash and d_compare set, so that the dentries - * contained in them are handled case-insensitively. Note that these operations - * are needed on the parent directory rather than on the dentries in it, and - * while the casefolding flag can be toggled on and off on an empty directory, - * dentry_operations can't be changed later. As a result, if the filesystem has - * casefolding support enabled at all, we have to give all dentries the - * casefolding operations even if their inode doesn't have the casefolding flag - * currently (and thus the casefolding ops would be no-ops for now). + * Casefolded directories need d_hash, d_compare and d_revalidate set, so + * that the dentries contained in them are handled case-insensitively, + * but implement support for fs_encryption. Note that these operations + * are needed on the parent directory rather than on the dentries in it, + * and while the casefolding flag can be toggled on and off on an empty + * directory, dentry_operations can't be changed later. As a result, if + * the filesystem has casefolding support enabled at all, we have to + * give all dentries the casefolding operations even if their inode + * doesn't have the casefolding flag currently (and thus the casefolding + * ops would be no-ops for now). * * Encryption works differently in that the only dentry operation it needs is * d_revalidate, which it only needs on dentries that have the no-key name flag. @@ -1522,29 +1516,17 @@ static const struct dentry_operations generic_encrypted_ci_dentry_ops = { */ void generic_set_encrypted_ci_d_ops(struct dentry *dentry) { -#ifdef CONFIG_FS_ENCRYPTION - bool needs_encrypt_ops = dentry->d_flags & DCACHE_NOKEY_NAME; -#endif #if IS_ENABLED(CONFIG_UNICODE) - bool needs_ci_ops = dentry->d_sb->s_encoding; -#endif -#if defined(CONFIG_FS_ENCRYPTION) && IS_ENABLED(CONFIG_UNICODE) - if (needs_encrypt_ops && needs_ci_ops) { + if (dentry->d_sb->s_encoding) { d_set_d_op(dentry, &generic_encrypted_ci_dentry_ops); return; } #endif #ifdef CONFIG_FS_ENCRYPTION - if (needs_encrypt_ops) { + if (dentry->d_flags & DCACHE_NOKEY_NAME) { d_set_d_op(dentry, &generic_encrypted_dentry_ops); return; } #endif -#if IS_ENABLED(CONFIG_UNICODE) - if (needs_ci_ops) { - d_set_d_op(dentry, &generic_ci_dentry_ops); - return; - } -#endif } EXPORT_SYMBOL(generic_set_encrypted_ci_d_ops);