• Christoph Hellwig's avatar
    block: remove the bi_phys_segments field in struct bio · 14ccb66b
    Christoph Hellwig authored
    We only need the number of segments in the blk-mq submission path.
    Remove the field from struct bio, and return it from a variant of
    blk_queue_split instead of that it can passed as an argument to
    those functions that need the value.
    This also means we stop recounting segments except for cloning
    and partial segments.
    To keep the number of arguments in this how path down remove
    pointless struct request_queue arguments from any of the functions
    that had it and grew a nr_segs argument.
    Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
    Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>