io_uring: cache poll/double-poll state with a request flag

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With commit "io_uring: cache req->apoll->events in req->cflags" applied,
we now have just io_poll_remove_entries() dipping into req->apoll when
it isn't strictly necessary.

Mark poll and double-poll with a flag, so we know if we need to look
at apoll->double_poll. This avoids pulling in those cachelines if we
don't need them. The common case is that the poll wake handler already
removed these entries while hot off the completion path.

Signed-off-by: Jens Axboe <axboe@kernel.dk>

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This commit is contained in:

Jens Axboe 2022-03-16 16:59:10 -06:00

parent 81459350d5

commit 91eac1c69c

1 changed files with 19 additions and 5 deletions

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fs/io_uring.c

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