• Tejun Heo's avatar
    block: hide request sector and data_len · a2dec7b3
    Tejun Heo authored
    Block low level drivers for some reason have been pretty good at
    abusing block layer API.  Especially struct request's fields tend to
    get violated in all possible ways.  Make it clear that low level
    drivers MUST NOT access or manipulate rq->sector and rq->data_len
    directly by prefixing them with double underscores.
    This change is also necessary to break build of out-of-tree codes
    which assume the previous block API where internal fields can be
    manipulated and rq->data_len carries residual count on completion.
    [ Impact: hide internal fields, block API change ]
    Signed-off-by: default avatarTejun Heo <tj@kernel.org>
    Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
blk-merge.c 9.43 KB