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authorDarrick J. Wong <djwong@us.ibm.com>2007-01-11 14:14:55 -0800
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2007-01-13 16:12:39 -0600
commitb218a0d8e250e0ae8fd4d4e45bd66a588b380752 (patch)
tree6c60dc11ef8d064404eb2fd6a3b4f37529a2c72f /include/scsi
parentbf451207511d049189ddb0a4eae3acdb086a3c82 (diff)
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[SCSI] libsas: Don't give scsi_cmnds to the EH if they never made it to the SAS LLDD or have already returned
On a system with many SAS targets, it appears possible that a scsi_cmnd can time out without ever making it to the SAS LLDD or at the same time that a completion is occurring. In both of these cases, telling the LLDD to abort the sas_task makes no sense because the LLDD won't know about the sas_task; what we really want to do is to increase the timer. Note that this involves creating another sas_task bit to indicate whether or not the task has been sent to the LLDD; I could have implemented this by slightly redefining SAS_TASK_STATE_PENDING, but this way seems cleaner. This second version amends the aic94xx portion to set the TASK_AT_INITIATOR flag for all sas_tasks that were passed to lldd_execute_task. Signed-off-by: Darrick J. Wong <djwong@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'include/scsi')
-rw-r--r--include/scsi/libsas.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index 0c775fc..da96bcf 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -554,6 +554,7 @@ struct sas_task {
#define SAS_TASK_STATE_DONE 2
#define SAS_TASK_STATE_ABORTED 4
#define SAS_TASK_INITIATOR_ABORTED 8
+#define SAS_TASK_AT_INITIATOR 16
static inline struct sas_task *sas_alloc_task(gfp_t flags)
{
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