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    io-wq: shrink io_wq_work a bit · e7680975
    Jens Axboe 提交于
    to #26323578
    
    commit 6206f0e180d4eddc0a178f57120ab1b913701f6e upstream.
    
    Currently we're using 40 bytes for the io_wq_work structure, and 16 of
    those is the doubly link list node. We don't need doubly linked lists,
    we always add to tail to keep things ordered, and any other use case
    is list traversal with deletion. For the deletion case, we can easily
    support any node deletion by keeping track of the previous entry.
    
    This shrinks io_wq_work to 32 bytes, and subsequently io_kiock from
    io_uring to 216 to 208 bytes.
    Signed-off-by: NJens Axboe <axboe@kernel.dk>
    Signed-off-by: NJoseph Qi <joseph.qi@linux.alibaba.com>
    Acked-by: NXiaoguang Wang <xiaoguang.wang@linux.alibaba.com>
    e7680975
io-wq.c 26.0 KB