• Mike Christie's avatar
    [PATCH] ll_rw_blk: fix missing bounce in blk_rq_map_kern() · 821de3a2
    Mike Christie authored
    I think we might just need the blk_map_kern users now. For the async
    execute I added the bounce code already and the block SG_IO has it
    atleady. I think the blk_map_kern bounce code got dropped because we
    thought the correct gfp_t would be passed in. But I think all we need is
    the patch below and all the paths are take care of. The patch is not
    tested. Patch was made against scsi-misc.
    
    The last place that is sending non sg commands may just be md/dm-emc.c
    but that is is just waiting on alasdair to take some patches that fix
    that and a bunch of junk in there including adding bounce support. If
    the patch below is ok though and dm-emc finally gets converted then it
    will have sg and bonce buffer support.
    Signed-off-by: default avatarMike Christie <michaelc@cs.wisc.edu>
    Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
    821de3a2
ll_rw_blk.c 103 KB