From: Sagi Grimberg <sagig@mellanox.com>
Date: Wed, 1 Oct 2014 11:02:09 +0000 (+0300)
Subject: IB/iser: Use single CQ for RX and TX
X-Git-Tag: fixes-against-v3.18-rc2~36^2^3~15
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6aabfa76f5e5281e5db128a34420d8f33b8574f7;p=pandora-kernel.git

IB/iser: Use single CQ for RX and TX

This will solve a possible condition where we might miss TX completion
(flush error) during session teardown.  Since we are using a single
CQ, we don't need to actively drain the TX CQ, instead just wait for
flush_completion (when counters reach zero) and remove iser_poll_for_flush_errors().

This patch might introduce a minor performance regression on its own,
but the next patches will enhance performance using a single CQ for RX
and TX.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
---

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