• Omar Sandoval's avatar
    block: get rid of struct blk_issue_stat · 544ccc8d
    Omar Sandoval authored
    struct blk_issue_stat squashes three things into one u64:
    
    - The time the driver started working on a request
    - The original size of the request (for the io.low controller)
    - Flags for writeback throttling
    
    It turns out that on x86_64, we have a 4 byte hole in struct request
    which we can fill with the non-timestamp fields from blk_issue_stat,
    simplifying things quite a bit.
    Signed-off-by: default avatarOmar Sandoval <osandov@fb.com>
    Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
    544ccc8d