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From: "boojin.kim" <boojin.kim@samsung.com>
To: <axboe@kernel.dk>, <linux-block@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>
Cc: "'Herbert Xu'" <herbert@gondor.apana.org.au>,
	"'David S. Miller'" <davem@davemloft.net>,
	"'Eric Biggers'" <ebiggers@kernel.org>,
	"'Theodore Y. Ts'o'" <tytso@mit.edu>,
	"'Chao Yu'" <chao@kernel.org>,
	"'Jaegeuk Kim'" <jaegeuk@kernel.org>,
	"'Andreas Dilger'" <adilger.kernel@dilger.ca>,
	"'Theodore Ts'o'" <tytso@mit.edu>, <dm-devel@redhat.com>,
	"'Mike Snitzer'" <snitzer@redhat.com>,
	"'Alasdair Kergon'" <agk@redhat.com>,
	"'Jens Axboe'" <axboe@kernel.dk>,
	"'Krzysztof Kozlowski'" <krzk@kernel.org>,
	"'Kukjin Kim'" <kgene@kernel.org>,
	"'Jaehoon Chung'" <jh80.chung@samsung.com>,
	"'Ulf Hansson'" <ulf.hansson@linaro.org>,
	<linux-crypto@vger.kernel.org>, <linux-fscrypt@vger.kernel.org>,
	<linux-mmc@vger.kernel.org>, <linux-samsung-soc@vger.kernel.org>,
	<linux-ext4@vger.kernel.org>,
	<linux-f2fs-devel@lists.sourceforge.net>,
	<linux-samsung-soc@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-fsdevel@vger.kernel.org>
Subject: Re: [PATCH 5/9] block: support diskcipher
Date: Thu, 22 Aug 2019 09:54:38 +0900	[thread overview]
Message-ID: <017901d55884$2cbc8f60$8635ae20$@samsung.com> (raw)
In-Reply-To: <CGME20190822005438epcas2p337aba06b328cdcdd1549395f0bbcfdbc@epcas2p3.samsung.com>

On 8/21/19 21:09 AM, Jens Axboe wrote:
> This isn't going to happen. With this, and the inline encryption
> proposed by Google, we'll bloat the bio even more. At least the Google
> approach didn't include bio iter changes as well.

> Please work it out between yourselves so we can have a single, clean
> abstraction that works for both.

I'm looking at inline encryption by Google. 
I will find compatibility with inline encryption to avoid conflicts
in BIO/F2FS.
And changing bio iter has a benefit for diskcipher.
Without changing bio iter, diskcipher should control(alloc/free) a buffer
to hold a 'bi_dun' variable for every bio.
But changing bio iter is difficult to accept for block layer,
I will modify the diskcipher.
And, as you mentioned, inline encryption by Google has this control.
So I might be able to use it.

Thanks.
Boojin Kim.


       reply	other threads:[~2019-08-22  0:54 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20190822005438epcas2p337aba06b328cdcdd1549395f0bbcfdbc@epcas2p3.samsung.com>
2019-08-22  0:54 ` boojin.kim [this message]
     [not found] <CGME20190828022055epcas2p25525077d0a5a3fa5a2027bac06a10bc1@epcas2p2.samsung.com>
2019-08-28  2:20 ` boojin.kim
     [not found] <CGME20190827083334epcas2p115d479190b9a72c886f66569add78203@epcas2p1.samsung.com>
2019-08-27  8:33 ` boojin.kim
2019-08-27 16:40   ` Theodore Y. Ts'o
     [not found] <CGME20190821064226epcas2p2835b8a9084988b79107e54abfc5e7dab@epcas2p2.samsung.com>
2019-08-21  6:42 ` boojin.kim
2019-08-21 12:09   ` Jens Axboe
2019-08-23  2:35     ` Satya Tangirala

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