• Jens Axboe's avatar
    io_uring: stop using io_wq_work as an fd placeholder · 82733d16
    Jens Axboe authored
    There are two reasons why this isn't the best idea:
    
    - It's an odd area to grab a bit of storage space, hence it's an odd area
      to grab storage from.
    - It puts the 3rd io_kiocb cacheline into the hot path, where normal hot
      path just needs the first two.
    
    Use 'cflags' for joint fd/cflags storage. We only need fd until we
    successfully issue, and we only need cflags once a request is done and is
    completed.
    
    Fixes: 6bf9c47a ("io_uring: defer file assignment")
    Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
    82733d16
io-wq.h 5.12 KB