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authorChristoph Hellwig <hch@lst.de>2010-11-10 14:54:09 +0100
committerJens Axboe <jaxboe@fusionio.com>2010-11-10 14:54:09 +0100
commit02e031cbc843b010e72fcc05c76113c688b2860f (patch)
tree9f68559ec3acc39bcc4ce2ff87043a094eaa2e8f /drivers/scsi
parent00e375e7e962f938f6b3c93e4cd097a5e26cc788 (diff)
downloadlinux-02e031cbc843b010e72fcc05c76113c688b2860f.tar.bz2
block: remove REQ_HARDBARRIER
REQ_HARDBARRIER is dead now, so remove the leftovers. What's left at this point is: - various checks inside the block layer. - sanity checks in bio based drivers. - now unused bio_empty_barrier helper. - Xen blockfront use of BLKIF_OP_WRITE_BARRIER - it's dead for a while, but Xen really needs to sort out it's barrier situaton. - setting of ordered tags in uas - dead code copied from old scsi drivers. - scsi different retry for barriers - it's dead and should have been removed when flushes were converted to FS requests. - blktrace handling of barriers - removed. Someone who knows blktrace better should add support for REQ_FLUSH and REQ_FUA, though. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/scsi_error.c18
1 files changed, 5 insertions, 13 deletions
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 1de30eb83bb0..f3cf924a2cd9 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -320,19 +320,11 @@ static int scsi_check_sense(struct scsi_cmnd *scmd)
"changed. The Linux SCSI layer does not "
"automatically adjust these parameters.\n");
- if (scmd->request->cmd_flags & REQ_HARDBARRIER)
- /*
- * 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;
+ /*
+ * Pass the UA upwards for a determination in the completion
+ * functions.
+ */
+ return SUCCESS;
/* these three are not supported */
case COPY_ABORTED: