• C
    block: remove REQ_HARDBARRIER · 02e031cb
    Christoph Hellwig 提交于
    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: NChristoph Hellwig <hch@lst.de>
    Signed-off-by: NJens Axboe <jaxboe@fusionio.com>
    02e031cb
blkdev.h 37.7 KB