Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > linux.kernel > #1318745

Re: [PATCH v2 04/10] crypto/compress: add asynchronous compression support

From "Li, Weigang" <weigang.li@intel.com>
Newsgroups linux.kernel
Subject Re: [PATCH v2 04/10] crypto/compress: add asynchronous compression support
Date 2016-01-27 09:30 +0100
Message-ID <qVtEd-DF-1@gated-at.bofh.it> (permalink)
References (1 earlier) <qV711-1ma-27@gated-at.bofh.it> <qVt1w-7Z-13@gated-at.bofh.it> <qVtbd-cl-13@gated-at.bofh.it> <qVtkR-wF-9@gated-at.bofh.it> <qVtkS-wF-17@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw


On 1/27/2016 4:09 PM, Herbert Xu wrote:
> On Wed, Jan 27, 2016 at 04:03:55PM +0800, Herbert Xu wrote:
>> On Wed, Jan 27, 2016 at 03:59:05PM +0800, Li, Weigang wrote:
>>>
>>> The acomp is also SG-based, while scomp only accepts flat buffer.
>>
>> Right, but do we need a pointer-based scomp at all? IPComp would
>> certainly be better off with an SG-based interface.  Any other
>> users of compression are presumably dealing with large amounts
>> of data where an SG interface would make more sense.
>>
>> A pointer interface makes sense for shash because you may be hashing
>> 16 bytes at a time.  Nobody sane is going to be compressing 16 bytes,
>> or are they?
>
> Note that I'm fine with keeping an scomp interface underneath
> for those algorithms where the best way to handle SG input is
> to linearise things.  But I would prefer that this interface is
> not exposed to kernel users unless it is absolutely required.
>
> Cheers,
>
Thanks for your comments, Herbert. I Agree, SG-list based compression 
API makes more sense. Maybe Joonsoo can comment on this.

Back to linux.kernel | Previous | NextPrevious in thread | Next in thread | Find similar | Unroll thread


Thread

[PATCH v2 00/10] Introduce new async/sync compression APIs Joonsoo Kim <js1304@gmail.com> - 2016-01-26 09:20 +0100
  [PATCH v2 02/10] crypto: add algorithm type specific flag, CRYPTO_ALG_PRIVATE Joonsoo Kim <js1304@gmail.com> - 2016-01-26 09:20 +0100
  [PATCH v2 06/10] crypto/lz4: support new compression APIs Joonsoo Kim <js1304@gmail.com> - 2016-01-26 09:20 +0100
  [PATCH v2 04/10] crypto/compress: add asynchronous compression support Joonsoo Kim <js1304@gmail.com> - 2016-01-26 09:20 +0100
    Re: [PATCH v2 04/10] crypto/compress: add asynchronous compression  support Herbert Xu <herbert@gondor.apana.org.au> - 2016-01-27 08:50 +0100
      Re: [PATCH v2 04/10] crypto/compress: add asynchronous compression  support "Li, Weigang" <weigang.li@intel.com> - 2016-01-27 09:00 +0100
        Re: [PATCH v2 04/10] crypto/compress: add asynchronous compression  support Herbert Xu <herbert@gondor.apana.org.au> - 2016-01-27 09:10 +0100
          Re: [PATCH v2 04/10] crypto/compress: add asynchronous compression  support Herbert Xu <herbert@gondor.apana.org.au> - 2016-01-27 09:10 +0100
            Re: [PATCH v2 04/10] crypto/compress: add asynchronous compression  support "Li, Weigang" <weigang.li@intel.com> - 2016-01-27 09:30 +0100
  [PATCH v2 03/10] crypto/compress: introduce sychronuous compression API Joonsoo Kim <js1304@gmail.com> - 2016-01-26 09:20 +0100

csiph-web