linux-kernel - Re: [RFC 07/10] fscrypt: move to generic async completion

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Message-ID: <20170511040442.GB2936@zzz>
Date:   Wed, 10 May 2017 21:04:42 -0700
From:   Eric Biggers <ebiggers3@...il.com>
To:     Gilad Ben-Yossef <gilad@...yossef.com>
Cc:     Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Jonathan Corbet <corbet@....net>,
        David Howells <dhowells@...hat.com>,
        Alasdair Kergon <agk@...hat.com>,
        Mike Snitzer <snitzer@...hat.com>, dm-devel@...hat.com,
        Shaohua Li <shli@...nel.org>, Steve French <sfrench@...ba.org>,
        "Theodore Y. Ts'o" <tytso@....edu>,
        Jaegeuk Kim <jaegeuk@...nel.org>,
        Mimi Zohar <zohar@...ux.vnet.ibm.com>,
        Dmitry Kasatkin <dmitry.kasatkin@...il.com>,
        James Morris <james.l.morris@...cle.com>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        Ofir Drang <ofir.drang@....com>,
        Gilad Ben-Yossef <gilad.benyossef@....com>,
        linux-crypto@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, keyrings@...r.kernel.org,
        linux-raid@...r.kernel.org, linux-cifs@...r.kernel.org,
        samba-technical@...ts.samba.org, linux-fsdevel@...r.kernel.org,
        linux-ima-devel@...ts.sourceforge.net,
        linux-ima-user@...ts.sourceforge.net,
        linux-security-module@...r.kernel.org
Subject: Re: [RFC 07/10] fscrypt: move to generic async completion

Hi Gilad,

On Sat, May 06, 2017 at 03:59:56PM +0300, Gilad Ben-Yossef wrote:
>  int fscrypt_do_page_crypto(const struct inode *inode, fscrypt_direction_t rw,
>  			   u64 lblk_num, struct page *src_page,
>  			   struct page *dest_page, unsigned int len,
> @@ -150,7 +135,7 @@ int fscrypt_do_page_crypto(const struct inode *inode, fscrypt_direction_t rw,
>  		u8 padding[FS_XTS_TWEAK_SIZE - sizeof(__le64)];
>  	} xts_tweak;
>  	struct skcipher_request *req = NULL;
> -	DECLARE_FS_COMPLETION_RESULT(ecr);
> +	DECLARE_CRYPTO_WAIT(ecr);
>  	struct scatterlist dst, src;
>  	struct fscrypt_info *ci = inode->i_crypt_info;
>  	struct crypto_skcipher *tfm = ci->ci_ctfm;
> @@ -168,7 +153,7 @@ int fscrypt_do_page_crypto(const struct inode *inode, fscrypt_direction_t rw,
[...]

This patch looks good --- thanks for doing this!  I suggest also renaming 'ecr'
to 'wait' in the places being updated to use crypto_wait, since the name is
obsolete (and was already; it originally stood for "ext4 completion result").

- Eric