From: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
To: James Bottomley
<James.Bottomley-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
Cc: Sagi Grimberg <sagi-NQWnxTmZq1alnMjI0IkVqw@public.gmane.org>,
Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>,
linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-scsi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH 2/2] IB/iser: set max_segment_size
Date: Tue, 12 Apr 2016 17:27:58 +0200 [thread overview]
Message-ID: <20160412152758.GA7896@lst.de> (raw)
In-Reply-To: <1460471256.2338.5.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
On Tue, Apr 12, 2016 at 07:27:36AM -0700, James Bottomley wrote:
> > In iser we sorta rely on 4k pages so we avoid
> > PAGE_SIZE but rather set SIZE_4K for these sort
> > of things (like we did in the virt_boundary).
>
> So you still want only 4k segments even on PPC where the PAGE_SIZE is
> 16k?
I'll leave the high level question to Sagi and friends, but if virt_boundary
and the MR page size are set to 4k we need to set the segment size
to the same, so this patch needs to be SIZE_4K indeed unless the
other two are changed.
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next prev parent reply other threads:[~2016-04-12 15:27 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-11 22:47 fix large I/O regression with iSER in 4.4+ Christoph Hellwig
[not found] ` <1460414846-29540-1-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2016-04-11 22:47 ` [PATCH 1/2] scsi: add a max_segment_size limitation to struct Scsi_Host Christoph Hellwig
2016-04-11 23:22 ` Laurence Oberman
2016-04-11 23:32 ` Bart Van Assche
[not found] ` <570C3400.9080503-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
2016-04-11 23:35 ` Christoph Hellwig
2016-04-11 23:44 ` Laurence Oberman
[not found] ` <1317640777.28365032.1460418264272.JavaMail.zimbra-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-04-12 12:23 ` Laurence Oberman
2016-04-11 22:47 ` [PATCH 2/2] IB/iser: set max_segment_size Christoph Hellwig
2016-04-12 10:48 ` Sagi Grimberg
[not found] ` <570CD26E.70502-NQWnxTmZq1alnMjI0IkVqw@public.gmane.org>
2016-04-12 14:27 ` James Bottomley
[not found] ` <1460471256.2338.5.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2016-04-12 15:27 ` Christoph Hellwig [this message]
2016-04-13 8:01 ` Sagi Grimberg
-- strict thread matches above, loose matches on Subject: below --
2016-04-12 14:13 fix large I/O regression with iSER in 4.4+ V2 Christoph Hellwig
[not found] ` <1460470405-11673-1-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2016-04-12 14:13 ` [PATCH 2/2] IB/iser: set max_segment_size Christoph Hellwig
2016-04-12 15:34 ` Bart Van Assche
2016-04-12 16:51 ` Christoph Hellwig
[not found] ` <20160412165130.GB9568-jcswGhMUV9g@public.gmane.org>
2016-04-12 18:13 ` Bart Van Assche
[not found] ` <570D3AE0.4040104-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
2016-04-12 18:43 ` Christoph Hellwig
[not found] ` <20160412184309.GA3333-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2016-04-13 14:07 ` Christoph Hellwig
2016-04-13 9:39 ` Sagi Grimberg
[not found] ` <1460470405-11673-3-git-send-email-hch-jcswGhMUV9g@public.gmane.org>
2016-04-28 7:40 ` Or Gerlitz
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