• Jens Axboe's avatar
    block: add notion of a chunk size for request merging · 762380ad
    Jens Axboe authored
    Some drivers have different limits on what size a request should
    optimally be, depending on the offset of the request. Similar to
    dividing a device into chunks. Add a setting that allows the driver
    to inform the block layer of such a chunk size. The block layer will
    then prevent merging across the chunks.
    This is needed to optimally support NVMe with a non-zero stripe size.
    Signed-off-by: default avatarJens Axboe <axboe@fb.com>
bio.c 49.2 KB