src/patches/suse-2.6.27.31/patches.fixes/scsi-initialize-max_targets_blocked

   1 From: Edward Goggin <egoggin@vmware.com>
   2 Date: Thu Apr 9 10:02:22 2009 -0700
   3 Subject: initialize max_target_blocked in scsi_alloc_target
   4 Patch-Mainline: Yes
   5 References: bnc#524347
   6
   7 This patch initializes the max_target_blocked field of a scsi target
   8 structure so that a queuecommand return value of
   9 SCSI_MLQUEUE_TARGET_BUSY will actually result in having the
  10 scsi_queue_insert blocking the device queue before requeuing the
  11 command and running the queue.  Otherwise, can and does cause livelock
  12 on single CPU configurations if/when open-iSCSI software initiator's
  13 command PDU window fills.
  14
  15 Signed-off-by: Ed Goggin <egoggin@vmware.com>
  16 Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
  17 Acked-by: Hannes Reinecke <hare@suse.de>
  18
  19 diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
  20 index 6f51ca4..e2b50d8 100644
  21 --- a/drivers/scsi/scsi_scan.c
  22 +++ b/drivers/scsi/scsi_scan.c
  23 @@ -425,6 +425,7 @@ static struct scsi_target *scsi_alloc_target(struct device *parent,
  24         INIT_LIST_HEAD(&starget->devices);
  25         starget->state = STARGET_CREATED;
  26         starget->scsi_level = SCSI_2;
  27 +       starget->max_target_blocked = SCSI_DEFAULT_TARGET_BLOCKED;
  28   retry:
  29         spin_lock_irqsave(shost->host_lock, flags);
  30