From: Christoph Hellwig <hch-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
To: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Cc: Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Or Gerlitz <ogerlitz-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
Eli Cohen <eli-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
Oren Duer <oren-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
Sagi Grimberg
<sagig-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
Subject: Re: [PATCH 0/5] Indirect memory registration feature
Date: Mon, 8 Jun 2015 06:22:54 -0700 [thread overview]
Message-ID: <20150608132254.GA14773@infradead.org> (raw)
In-Reply-To: <1433769339-949-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
On Mon, Jun 08, 2015 at 04:15:34PM +0300, Sagi Grimberg wrote:
> There are couple of possible (sub-optimal) solutions to handle this limitation:
There is another one: Set the block level SG_GAPS flags to ensure
the block layer never generates these SG lists.
Right now drivers tat set these would always fail SG_IO ioctls using
iovecs, but that can be fixed much more easily by doing high level
bounce buffering compared to these horrible workarounds deep down in the
stack.
--
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next prev parent reply other threads:[~2015-06-08 13:22 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-08 13:15 [PATCH 0/5] Indirect memory registration feature Sagi Grimberg
[not found] ` <1433769339-949-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2015-06-08 13:15 ` [PATCH 1/5] IB/core: Introduce Fast Indirect Memory Registration verbs API Sagi Grimberg
[not found] ` <1433769339-949-2-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2015-06-08 20:49 ` Hefty, Sean
[not found] ` <1828884A29C6694DAF28B7E6B8A82373A8FE5C7C-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-06-30 11:47 ` Sagi Grimberg
[not found] ` <559281B4.6010807-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-06-30 12:10 ` Christoph Hellwig
[not found] ` <20150630121002.GA24169-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2015-06-30 12:59 ` Sagi Grimberg
[not found] ` <559292CE.9010303-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-07-01 7:23 ` Christoph Hellwig
2015-06-08 13:15 ` [PATCH 2/5] IB/mlx5: Implement Fast Indirect Memory Registration Feature Sagi Grimberg
2015-06-08 13:15 ` [PATCH 3/5] IB/iser: Pass iser device to registration routines Sagi Grimberg
2015-06-08 13:15 ` [PATCH 4/5] IB/iser: Add indirect registration support Sagi Grimberg
2015-06-08 13:15 ` [PATCH 5/5] IB/iser: Add debug prints to the various memory registration methods Sagi Grimberg
2015-06-08 13:22 ` Christoph Hellwig [this message]
[not found] ` <20150608132254.GA14773-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2015-06-08 13:39 ` [PATCH 0/5] Indirect memory registration feature Sagi Grimberg
[not found] ` <55759B0B.8050805-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2015-06-08 13:51 ` Christoph Hellwig
[not found] ` <20150608135151.GA14021-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2015-06-08 14:42 ` Sagi Grimberg
[not found] ` <5575A9C7.7000409-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-06-09 6:20 ` Christoph Hellwig
[not found] ` <20150609062054.GA13011-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2015-06-09 8:44 ` Sagi Grimberg
[not found] ` <5576A760.4090004-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-06-09 11:14 ` Christoph Hellwig
2015-06-09 15:06 ` Chuck Lever
2015-06-09 7:41 ` Christoph Hellwig
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