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Commit 3496343d authored by Mike Christie's avatar Mike Christie Committed by James Bottomley
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[SCSI] lpfc: block target when port queueing limit is hit 



Instead of blocking the entire host when the port's
queueing limit is hit, we should only block the port's
target. This will allow IO to other ports to execute.

Signed-off-by: default avatarMike Christie <michaelc@cs.wisc.edu>
Acked-by: default avatarJames Smart <james.smart@emulex.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@suse.de>
parent f55ca84d

drivers/scsi/lpfc/lpfc_scsi.c

+4 −1
Original line number Diff line number Diff line
@@ -3062,7 +3062,7 @@ lpfc_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) 
		goto out_fail_command;

	}

	if (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth)

		goto out_host_busy;

		goto out_tgt_busy;



	lpfc_cmd = lpfc_get_scsi_buf(phba, ndlp);

	if (lpfc_cmd == NULL) {
@@ -3179,6 +3179,9 @@ lpfc_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) 
 out_host_busy:

	return SCSI_MLQUEUE_HOST_BUSY;



 out_tgt_busy:

	return SCSI_MLQUEUE_TARGET_BUSY;



 out_fail_command:

	done(cmnd);

	return 0;