On 2/8/19 6:34 PM, Jens Axboe wrote:
Add a separate io_submit_state structure, to cache some of the things we need for IO submission. One such example is file reference batching. io_submit_state. We get as many references as the number of sqes we are submitting, and drop unused ones if we end up switching files. The assumption here is that we're usually only dealing with one fd, and if there are multiple, hopefuly they are at least somewhat ordered. Could trivially be extended to cover multiple fds, if needed. On the completion side we do the same thing, except this is trivially done just locally in io_iopoll_reap(). Signed-off-by: Jens Axboe <axboe@xxxxxxxxx> --- fs/io_uring.c | 142 ++++++++++++++++++++++++++++++++++++++++++-------- 1 file changed, 121 insertions(+), 21 deletions(-)
Reviewed-by: Hannes Reinecke <hare@xxxxxxxx> Cheers, Hannes
