From: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Wed, 30 Nov 2011 09:25:21 +0000 (-0800)
Subject: target: Drop se_device TCQ queue_depth usage from I/O path
X-Git-Tag: v3.3-rc1~7^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=65586d51e0986be574118286c3d0007e903a2add;p=pandora-kernel.git

target: Drop se_device TCQ queue_depth usage from I/O path

Historically, pSCSI devices have been the ones that required target-core
to enforce a per se_device->depth_left.  This patch changes target-core
to no longer (by default) enforce a per se_device->depth_left or sleep in
transport_tcq_window_closed() when we out of queue slots for all backend
export cases.

Cc: Christoph Hellwig <hch@lst.de>
Cc: Roland Dreier <roland@purestorage.com>
Cc: Joern Engel <joern@logfs.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
---

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