tree 44236fd9f2eb40d5622cadb126e9f2672b129486
parent 040515f53c09047c76ad074dc6a280984dc84b04
author Mike Christie <michaelc@cs.wisc.edu> 1148967448 -0500
committer James Bottomley <jejb@mulgrave.il.steeleye.com> 1149549145 -0400

[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>