From: Or Gerlitz <ogerlitz@voltaire.com>
Date: Mon, 8 Feb 2010 13:23:11 +0000 (+0000)
Subject: IB/iser: Remove redundant locking from iser scsi command response flow
X-Git-Tag: v2.6.34-rc1~225^2~4^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=88ec415772144f4fc4a50b123bb6200de686898d;p=pandora-kernel.git

IB/iser: Remove redundant locking from iser scsi command response flow

Currently the iSER receive completion flow takes the session lock
twice.  Optimize it to avoid the first one by letting
iser_task_rdma_finalize() be called only from the cleanup_task
callback invoked by iscsi_free_task, thus reducing the contention on
the session lock between the scsi command submission to the scsi
command completion flows.

Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
---

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