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Fri, 26 Jul 2019 22:46:07 +0000 Received: from sol.localdomain (c-24-5-143-220.hsd1.ca.comcast.net [24.5.143.220]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8DD1822CBD; Fri, 26 Jul 2019 22:45:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1564181157; bh=p4b6lbT/vXeFl+ohiAaEXRqD9wNsZb1Lt4uv7EKQyOw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MM4D5gPH69GqpF3b8koFKDX+wIjuAy9mAzlqBgU4GxwWONYReUxJpZMjDuHqN9sX7 KFar2HJkjx/eselAi4+v1u3xS4T25z4juBkm2/lgPh1KAYsPHa2e7NsUlZ/Vn8w2X4 962saN8QDBZExRtmNSRMceMrLT2+JyxT3Nc/B2ek= From: Eric Biggers To: linux-fscrypt@vger.kernel.org Date: Fri, 26 Jul 2019 15:41:29 -0700 Message-Id: <20190726224141.14044-5-ebiggers@kernel.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190726224141.14044-1-ebiggers@kernel.org> References: <20190726224141.14044-1-ebiggers@kernel.org> MIME-Version: 1.0 X-Headers-End: 1hr8yR-000WrY-F7 Subject: [f2fs-dev] [PATCH v7 04/16] fscrypt: add ->ci_inode to fscrypt_info X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Satya Tangirala , linux-api@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, keyrings@vger.kernel.org, linux-mtd@lists.infradead.org, linux-crypto@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, Paul Crowley Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net From: Eric Biggers Add an inode back-pointer to 'struct fscrypt_info', such that inode->i_crypt_info->ci_inode == inode. This will be useful for: 1. Evicting the inodes when a fscrypt key is removed, since we'll track the inodes using a given key by linking their fscrypt_infos together, rather than the inodes directly. This avoids bloating 'struct inode' with a new list_head. 2. Simplifying the per-file key setup, since the inode pointer won't have to be passed around everywhere just in case something goes wrong and it's needed for fscrypt_warn(). Signed-off-by: Eric Biggers --- fs/crypto/fscrypt_private.h | 3 +++ fs/crypto/keyinfo.c | 2 ++ 2 files changed, 5 insertions(+) diff --git a/fs/crypto/fscrypt_private.h b/fs/crypto/fscrypt_private.h index fae411b2f78dc..d345a7d28df8c 100644 --- a/fs/crypto/fscrypt_private.h +++ b/fs/crypto/fscrypt_private.h @@ -73,6 +73,9 @@ struct fscrypt_info { */ struct fscrypt_mode *ci_mode; + /* Back-pointer to the inode */ + struct inode *ci_inode; + /* * If non-NULL, then this inode uses a master key directly rather than a * derived key, and ci_ctfm will equal ci_master_key->mk_ctfm. diff --git a/fs/crypto/keyinfo.c b/fs/crypto/keyinfo.c index 22345ddede119..2d45a86f09db2 100644 --- a/fs/crypto/keyinfo.c +++ b/fs/crypto/keyinfo.c @@ -556,6 +556,8 @@ int fscrypt_get_encryption_info(struct inode *inode) if (!crypt_info) return -ENOMEM; + crypt_info->ci_inode = inode; + crypt_info->ci_flags = ctx.flags; crypt_info->ci_data_mode = ctx.contents_encryption_mode; crypt_info->ci_filename_mode = ctx.filenames_encryption_mode; -- 2.22.0 _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel