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From: Hannes Reinecke <hare@suse.de>
To: Dmitry Monakhov <dmonakhov@openvz.org>,
	linux-kernel@vger.kernel.org, linux-block@vger.kernel.org,
	martin.petersen@oracle.com
Subject: Re: [PATCH 8/9] bio: add bvec_iter rewind API
Date: Wed, 5 Apr 2017 08:39:59 +0200	[thread overview]
Message-ID: <40f06650-15bd-a4d0-57d2-f3fba12271c1@suse.de> (raw)
In-Reply-To: <1491332201-26926-9-git-send-email-dmonakhov@openvz.org>

On 04/04/2017 08:56 PM, Dmitry Monakhov wrote:
> Some ->bi_end_io handlers (for example: pi_verify or decrypt handlers)
> need to know original data vector, but after bio traverse io-stack it may
> be advanced, splited and relocated many times so it is hard to guess
> original iterator. Let's add 'bi_done' conter which accounts number
> of bytes iterator was advanced during it's evolution. Later end_io handler
> may easily restore original iterator by rewinding iterator to
> iter->bi_done.
> 
> Note: this change makes sizeof (struct bvec_iter) multiple to 8
> Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
> ---
>  include/linux/bio.h  | 21 +++++++++++++++++++--
>  include/linux/bvec.h | 26 ++++++++++++++++++++++++++
>  2 files changed, 45 insertions(+), 2 deletions(-)
> 
Reviewed-by: Hannes Reinecke <hare@suse.com>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		   Teamlead Storage & Networking
hare@suse.de			               +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 N�rnberg
GF: F. Imend�rffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton
HRB 21284 (AG N�rnberg)

WARNING: multiple messages have this Message-ID (diff)
From: Hannes Reinecke <hare@suse.de>
To: Dmitry Monakhov <dmonakhov@openvz.org>,
	linux-kernel@vger.kernel.org, linux-block@vger.kernel.org,
	martin.petersen@oracle.com
Subject: Re: [PATCH 8/9] bio: add bvec_iter rewind API
Date: Wed, 5 Apr 2017 08:39:59 +0200	[thread overview]
Message-ID: <40f06650-15bd-a4d0-57d2-f3fba12271c1@suse.de> (raw)
In-Reply-To: <1491332201-26926-9-git-send-email-dmonakhov@openvz.org>

On 04/04/2017 08:56 PM, Dmitry Monakhov wrote:
> Some ->bi_end_io handlers (for example: pi_verify or decrypt handlers)
> need to know original data vector, but after bio traverse io-stack it may
> be advanced, splited and relocated many times so it is hard to guess
> original iterator. Let's add 'bi_done' conter which accounts number
> of bytes iterator was advanced during it's evolution. Later end_io handler
> may easily restore original iterator by rewinding iterator to
> iter->bi_done.
> 
> Note: this change makes sizeof (struct bvec_iter) multiple to 8
> Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
> ---
>  include/linux/bio.h  | 21 +++++++++++++++++++--
>  include/linux/bvec.h | 26 ++++++++++++++++++++++++++
>  2 files changed, 45 insertions(+), 2 deletions(-)
> 
Reviewed-by: Hannes Reinecke <hare@suse.com>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke		   Teamlead Storage & Networking
hare@suse.de			               +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton
HRB 21284 (AG Nürnberg)

  reply	other threads:[~2017-04-05  6:40 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-04-04 18:56 [PATCH 0/9] block: T10/DIF Fixes and cleanups v3 Dmitry Monakhov
2017-04-04 18:56 ` [PATCH 1/9] bio-integrity: Do not allocate integrity context for bio w/o data Dmitry Monakhov
2017-04-05  6:32   ` Hannes Reinecke
2017-04-05  6:32     ` Hannes Reinecke
2017-04-20  2:34   ` Martin K. Petersen
2017-04-04 18:56 ` [PATCH 2/9] bio-integrity: bio_trim should truncate integrity vector accordingly Dmitry Monakhov
2017-04-05  6:32   ` Hannes Reinecke
2017-04-05  6:32     ` Hannes Reinecke
2017-04-20  2:34   ` Martin K. Petersen
2017-04-04 18:56 ` [PATCH 3/9] bio-integrity: bio_integrity_advance must update integrity seed Dmitry Monakhov
2017-04-05  6:34   ` Hannes Reinecke
2017-04-05  6:34     ` Hannes Reinecke
2017-04-06 11:35   ` Christoph Hellwig
2017-04-20  2:36   ` Martin K. Petersen
2017-05-03 16:06     ` Dmitry Monakhov
2017-05-03 16:10       ` Martin K. Petersen
2017-04-04 18:56 ` [PATCH 4/9] bio-integrity: fix interface for bio_integrity_trim v2 Dmitry Monakhov
2017-04-05  6:36   ` Hannes Reinecke
2017-04-05  6:36     ` Hannes Reinecke
2017-04-06 11:36   ` Christoph Hellwig
2017-04-20  2:38   ` Martin K. Petersen
2017-04-04 18:56 ` [PATCH 5/9] bio-integrity: fold bio_integrity_enabled to bio_integrity_prep Dmitry Monakhov
2017-04-05  6:37   ` Hannes Reinecke
2017-04-05  6:37     ` Hannes Reinecke
2017-04-06 11:43   ` Christoph Hellwig
2017-04-20  2:40   ` Martin K. Petersen
2017-04-04 18:56 ` [PATCH 6/9] T10: Move opencoded contants to common header Dmitry Monakhov
2017-04-05  6:37   ` Hannes Reinecke
2017-04-05  6:37     ` Hannes Reinecke
2017-04-06 11:44   ` Christoph Hellwig
2017-04-20  2:44   ` Martin K. Petersen
2017-04-04 18:56 ` [PATCH 7/9] Guard bvec iteration logic v3 Dmitry Monakhov
2017-04-05  6:39   ` Hannes Reinecke
2017-04-05  6:39     ` Hannes Reinecke
2017-04-06 11:46   ` Christoph Hellwig
2017-04-04 18:56 ` [PATCH 8/9] bio: add bvec_iter rewind API Dmitry Monakhov
2017-04-05  6:39   ` Hannes Reinecke [this message]
2017-04-05  6:39     ` Hannes Reinecke
2017-04-06 11:49   ` Christoph Hellwig
2017-04-20  2:51   ` Martin K. Petersen
2017-04-04 18:56 ` [PATCH 9/9] bio-integrity: Restore original iterator on verify stage Dmitry Monakhov
2017-04-05  6:41   ` Hannes Reinecke
2017-04-05  6:41     ` Hannes Reinecke
2017-04-06 11:49   ` Christoph Hellwig
2017-05-02  7:31 ` [PATCH 0/9] block: T10/DIF Fixes and cleanups v3 Christoph Hellwig
2017-05-10 15:28   ` Dmitry Monakhov
2017-05-10 15:20 [PATCH 0/9] block: T10/DIF Fixes and cleanups v4 Dmitry Monakhov
2017-05-10 15:20 ` [PATCH 8/9] bio: add bvec_iter rewind API Dmitry Monakhov

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