From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Brown Subject: Re: [PATCH 0/2] Introduce the request handling for dm-crypt Date: Thu, 12 Nov 2015 10:04:22 +0000 Message-ID: <20151112100422.GM12392@sirena.org.uk> References: <20151111181813.GD12236@redhat.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="Zl+NncWK+U5aSfTo" Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org To: Baolin Wang Cc: Mike Snitzer , axboe@kernel.dk, Alasdair G Kergon , dm-devel@redhat.com, neilb@suse.com, linux-raid@vger.kernel.org, jack@suse.cz, Arnd Bergmann , LKML , keith.busch@intel.com, jmoyer@redhat.com, tj@kernel.org, bart.vanassche@sandisk.com, "Garg, Dinesh" List-Id: linux-raid.ids --Zl+NncWK+U5aSfTo Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Thu, Nov 12, 2015 at 04:20:41PM +0800, Baolin Wang wrote: > 3. perforamence data > It is just a simple dd test result, and will provide the formal report > in future. But from the simple test, we can see the improvement. It's probably also worth pointing out that Qualcomm have been shipping an out of tree implementation of this as a separate module in their BSP (originally written by Danesh Garg who's on this thread): https://android.googlesource.com/kernel/msm/+/android-msm-dory-3.10-kitkat-wear/drivers/md/dm-req-crypt.c Android now wants to encrypt phones and tablets by default and have been seeing substantial performance hits as a result, we can try to get people to share performance data from productionish systems but it might be difficult. --Zl+NncWK+U5aSfTo Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAEBCAAGBQJWRGQlAAoJECTWi3JdVIfQ7ZoH/i6/2JElYTetwRMdire3tBjM 7O0w4z0tAp6MYlwhwam8u8KZV3b9VBkxaG5e4EqSqz04KbbKsfcMSQyMGB1Gig9W fpCdMr8qJdlFi3g98jTFzuJkXncD1SKD3Pm58faDHF5z5GFFh2ySH8NxN6Oki+Ih 43AvuAYhiFI6kSJ/kqHBtiVy39bm/TUW0UR/+F4g4YgGfM/LIN6s88rvOcn+JRva KcFKDKiK8s5l14fdn1iKl6owLs3gUfdjgXhYCa+dWEG5KB82SkBN/Z3kf53GU8YR CGx7+LtzTmehB5NRhFUAD6gx6cZxiRuuPgTIVJkQ8x7A2yFGUlKvZaksh8TiXh4= =EaTi -----END PGP SIGNATURE----- --Zl+NncWK+U5aSfTo--