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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/block/xen-blkfront.c
parent00e375e7e962f938f6b3c93e4cd097a5e26cc788 (diff)
downloadop-kernel-dev-02e031cbc843b010e72fcc05c76113c688b2860f.zip
op-kernel-dev-02e031cbc843b010e72fcc05c76113c688b2860f.tar.gz
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/block/xen-blkfront.c')
-rw-r--r--drivers/block/xen-blkfront.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 06e2812..255035c 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -289,8 +289,6 @@ static int blkif_queue_request(struct request *req)
ring_req->operation = rq_data_dir(req) ?
BLKIF_OP_WRITE : BLKIF_OP_READ;
- if (req->cmd_flags & REQ_HARDBARRIER)
- ring_req->operation = BLKIF_OP_WRITE_BARRIER;
ring_req->nr_segments = blk_rq_map_sg(req->q, req, info->sg);
BUG_ON(ring_req->nr_segments > BLKIF_MAX_SEGMENTS_PER_REQUEST);
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