From: Mike Christie <michaelc@cs.wisc.edu>
Date: Tue, 30 May 2006 05:37:28 +0000 (-0500)
Subject: [SCSI] iscsi: fix writepsace race
X-Git-Tag: v2.6.18-rc1~1092^2~25
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3219e5294150aee7d389e19029f49b44fb6b5c9f;p=pandora-kernel.git

[SCSI] iscsi: fix writepsace race

We can race and misset the suspend bit if iscsi_write_space is
called then iscsi_send returns with a failure indicating
there is no space.

To handle this this patch returns a error upwards allowing xmitworker
to decide if we need to try and transmit again. For the no
write space case xmitworker will not retry, and instead
let iscsi_write_space queue it back up if needed (this relies
on the work queue code to properly requeue us if needed).

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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