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authorLinus Torvalds <torvalds@linux-foundation.org>2010-05-09 18:35:53 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-09 18:35:53 -0700
commit93cb463141d50e4c6a574efc2c6e4d6d76ffed77 (patch)
tree3d15e3ba65a28bc2df08f388acaa02f1f4f09cce /drivers/scsi/scsi_error.c
parent1c6fe0364fa7bf28248488753ee0afb6b759cd04 (diff)
parent77a4229719e511a0d38d9c355317ae1469adeb54 (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: [SCSI] Retry commands with UNIT_ATTENTION sense codes to fix ext3/ext4 I/O error [SCSI] Enable retries for SYNCRONIZE_CACHE commands to fix I/O error [SCSI] scsi_debug: virtual_gb ignores sector_size [SCSI] libiscsi: regression: fix header digest errors [SCSI] fix locking around blk_abort_request() [SCSI] advansys: fix narrow board error path
Diffstat (limited to 'drivers/scsi/scsi_error.c')
-rw-r--r--drivers/scsi/scsi_error.c15
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index d45c69ca5737..7ad53fa42766 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -302,7 +302,20 @@ static int scsi_check_sense(struct scsi_cmnd *scmd)
if (scmd->device->allow_restart &&
(sshdr.asc == 0x04) && (sshdr.ascq == 0x02))
return FAILED;
- return SUCCESS;
+
+ if (blk_barrier_rq(scmd->request))
+ /*
+ * barrier requests should always retry on UA
+ * otherwise block will get a spurious error
+ */
+ return NEEDS_RETRY;
+ else
+ /*
+ * for normal (non barrier) commands, pass the
+ * UA upwards for a determination in the
+ * completion functions
+ */
+ return SUCCESS;
/* these three are not supported */
case COPY_ABORTED: