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From: "Stephan Müller" <smueller@chronox.de>
To: Herbert Xu <herbert@gondor.apana.org.au>
Cc: linux-crypto@vger.kernel.org
Subject: Re: [PATCH 1/2] crypto: aead AF_ALG - overhaul memory management
Date: Thu, 12 Jan 2017 17:19:57 +0100	[thread overview]
Message-ID: <5211147.RjDSfvrhhz@tauon.atsec.com> (raw)
In-Reply-To: <20170112161759.GC19732@gondor.apana.org.au>

Am Freitag, 13. Januar 2017, 00:17:59 CET schrieb Herbert Xu:

Hi Herbert,

> On Thu, Jan 12, 2017 at 05:10:14PM +0100, Stephan Müller wrote:
> > Each IOCB would transpire into an independent, separate recvmsg invocation
> > without an additional sendmsg/sendpage operation. Thus, in order to
> > support
> > multiple IOCBs, all data the multiple recvmsg invocations will operate on
> > must be injected into the kernel beforehand.
> 
> I don't understand, what's wrong with:
> 
> sendmsg(fd, ...)
> aio_read(iocb1)
> sendmsg(fd, ...)
> aio_read(iocb2)

Sure, that works. But here you limit yourself to one IOCB per aio_read. But 
aio_read supports multiple IOCBs in one invocation. And this is the issue I am 
considering.

Ciao
Stephan

  reply	other threads:[~2017-01-12 16:20 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-12-25 17:13 [PATCH 0/2] crypto: AF_ALG memory management fix Stephan Müller
2016-12-25 17:15 ` [PATCH 1/2] crypto: aead AF_ALG - overhaul memory management Stephan Müller
2017-01-12 15:51   ` Herbert Xu
2017-01-12 15:56     ` Stephan Müller
2017-01-12 16:05       ` Stephan Müller
2017-01-12 16:07         ` Herbert Xu
2017-01-12 16:10           ` Stephan Müller
2017-01-12 16:17             ` Herbert Xu
2017-01-12 16:19               ` Stephan Müller [this message]
2017-01-13 10:21                 ` Herbert Xu
2017-01-13 10:49                   ` Stephan Müller
2017-01-13 11:03                     ` Herbert Xu
2017-01-13 11:10                       ` Stephan Müller
2017-01-13 11:12                         ` Herbert Xu
2017-01-13 11:16                           ` Stephan Müller
2017-01-13 11:25                             ` Herbert Xu
2017-01-13 11:51                               ` Stephan Müller
2017-01-16 13:41                               ` Stephan Müller
2016-12-25 17:15 ` [PATCH 2/2] crypto: skcipher " Stephan Müller

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