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From: Or Gerlitz <ogerlitz-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
To: Sagi Grimberg
	<sagig-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>,
	Bart Van Assche <bvanassche-HInyCGIudOg@public.gmane.org>,
	Or Gerlitz <or.gerlitz-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	Roland Dreier <roland-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	Hefty Sean <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
	Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Cc: linux-rdma <linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	Mike Christie <michaelc-hcNo3dDEHLuVc3sceRu5cw@public.gmane.org>,
	Oren Duer <oren-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Subject: Re: linux rdma 3.14 merge plans
Date: Wed, 29 Jan 2014 18:34:34 +0200	[thread overview]
Message-ID: <52E92D9A.70402@mellanox.com> (raw)
In-Reply-To: <52E91906.70802-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>

On 29/01/2014 17:06, Sagi Grimberg wrote:
> Non-contiguous buffers are a well known problem/challenge for RDMA 
> transports, each handles them differently: iSER uses bounce buffers, 
> SRP registers multiple contiguous regions.

To be precise, we do it only on very special cases, normally the payload 
**each** SCSI command of size > PAGE_SIZE is scattered between random 
set of pages allocated by the kernel buffer cache and this set is mapped 
through fast-reg or fmr mechanism to one RDMA virtual address.

Or.
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  parent reply	other threads:[~2014-01-29 16:34 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-01-07 21:02 linux rdma 3.14 merge plans Or Gerlitz
     [not found] ` <CAJZOPZ+4yQ-sT=ks7+eiJjkxOjy5w=BmG16JVcUPiuVsof7qEA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-01-08  0:51   ` Roland Dreier
     [not found]     ` <CAG4TOxOMmvFWnkU3DBn33rscEKh2_YfbUCKY=iY8PCVN3+nEsA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-01-08  8:52       ` Sagi Grimberg
2014-01-08  9:15       ` Or Gerlitz
2014-01-08  9:37       ` Or Gerlitz
     [not found]         ` <52CD1C68.4050406-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2014-01-13 20:32           ` Nicholas A. Bellinger
     [not found]             ` <1389645171.5567.459.camel-XoQW25Eq2zviZyQQd+hFbcojREIfoBdhmpATvIKMPHk@public.gmane.org>
2014-01-15 21:15               ` Nicholas A. Bellinger
     [not found]                 ` <CAG4TOxNa32sLxifPx_f8sW04B_qSh01WWfWjRvam6fjvFLDXSQ@mail.gmail.com>
     [not found]                   ` <CAG4TOxNa32sLxifPx_f8sW04B_qSh01WWfWjRvam6fjvFLDXSQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-01-16 21:14                     ` Nicholas A. Bellinger
     [not found]                       ` <1389906852.5567.668.camel-XoQW25Eq2zviZyQQd+hFbcojREIfoBdhmpATvIKMPHk@public.gmane.org>
2014-01-16 21:37                         ` Greg Kroah-Hartman
     [not found]                           ` <20140116213717.GA24718-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2014-01-16 21:42                             ` Or Gerlitz
     [not found]                               ` <CAJZOPZ+75yOyxrcu4s=dSxv4Ya27UyotbRWLqwC3bbh3wieihg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-01-16 21:58                                 ` Greg Kroah-Hartman
2014-01-16 22:06                                 ` Nicholas A. Bellinger
2014-01-17 22:02                         ` Martin K. Petersen
2014-01-18 21:42                         ` Roland Dreier
2014-01-19  3:42                           ` Nicholas A. Bellinger
2014-01-19 11:20                             ` sagi grimberg
     [not found]                               ` <52DBB4F1.4020400-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2014-01-20 13:56                                 ` Or Gerlitz
2014-01-21 22:00                                   ` Or Gerlitz
     [not found]                                     ` <CAJZOPZLuz-Z59agBd0Q9J2=sSG-F+Y8MrJkoGbtiF5M+CnKU1g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-01-22  0:43                                       ` Roland Dreier
2014-01-22  0:43                                         ` Roland Dreier
2014-01-22  4:10                                         ` Or Gerlitz
     [not found]                                         ` <CAG4TOxPLEfyWsUDf4_371u=_=tOgW2v5J4zSz8xx73DfziZOZg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-01-22  7:27                                           ` Nicholas A. Bellinger
2014-01-22  7:27                                             ` Nicholas A. Bellinger
2014-02-07  0:02                                             ` Nicholas A. Bellinger
2014-02-07  0:04                                               ` Roland Dreier
2014-02-25 21:10                                                 ` Or Gerlitz
2014-03-05  9:54                                                 ` Nicholas A. Bellinger
     [not found]                                                   ` <1394013249.19539.17.camel-XoQW25Eq2zviZyQQd+hFbcojREIfoBdhmpATvIKMPHk@public.gmane.org>
2014-03-05 15:18                                                     ` Roland Dreier
2014-03-05 15:18                                                       ` Roland Dreier
     [not found]                                                       ` <CAG4TOxNRkAUH5Jsd67--ydWtUJqE1=pnVSuorgn4vNQiuYx1wg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-03-05 15:38                                                         ` Or Gerlitz
2014-03-05 15:38                                                           ` Or Gerlitz
2014-03-05 19:03                                                       ` Nicholas A. Bellinger
     [not found]                                                         ` <1394046218.20601.12.camel-XoQW25Eq2zviZyQQd+hFbcojREIfoBdhmpATvIKMPHk@public.gmane.org>
2014-03-07  5:07                                                           ` Devesh Sharma
2014-03-07  5:07                                                             ` Devesh Sharma
     [not found]                                                             ` <EE7902D3F51F404C82415C4803930ACD3FDDD50E-DWYeeINJQrxExQ8dmkPuX0M9+F4ksjoh@public.gmane.org>
2014-03-07 19:31                                                               ` Roland Dreier
2014-03-07 19:31                                                                 ` Roland Dreier
     [not found]                                                                 ` <CAL1RGDXRCZafDcFsbiG823VQ7_AVZeZqxY8JEaj=oCYRteAw_A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-03-10  9:00                                                                   ` Devesh Sharma
2014-03-10  9:00                                                                     ` Devesh Sharma
2014-04-01 21:31                                           ` Or Gerlitz
2014-01-22  9:48                                         ` Sagi Grimberg
     [not found]                                           ` <52DF93D3.6030509-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2014-01-28 21:02                                             ` Or Gerlitz
2014-01-28 21:02                                               ` Or Gerlitz
     [not found]                                               ` <CAJZOPZLBECYXrpp0GY0uUvyf+XbiLHhXdVukniPXD4AWZObymg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-01-29 14:13                                                 ` Bart Van Assche
     [not found]                                                   ` <52E90C81.9040800-HInyCGIudOg@public.gmane.org>
2014-01-29 15:06                                                     ` Sagi Grimberg
     [not found]                                                       ` <52E91906.70802-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2014-01-29 16:34                                                         ` Or Gerlitz [this message]
2014-01-29 17:56                                                         ` Bart Van Assche
     [not found]                                                           ` <52E940B2.3070901-HInyCGIudOg@public.gmane.org>
2014-01-30  8:19                                                             ` Or Gerlitz
     [not found]                                                               ` <52EA0AFA.40100-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2014-01-30 10:07                                                                 ` Bart Van Assche
     [not found]                                                                   ` <52EA2465.8010907-HInyCGIudOg@public.gmane.org>
2014-01-30 10:38                                                                     ` Or Gerlitz
2014-01-20 12:40       ` Bart Van Assche

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