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io_uring: don't enter poll loop if we have CQEs pending
authorJens Axboe <axboe@kernel.dk>
Tue, 20 Aug 2019 17:03:11 +0000 (11:03 -0600)
committerJens Axboe <axboe@kernel.dk>
Tue, 20 Aug 2019 17:03:11 +0000 (11:03 -0600)
commita3a0e43fd77013819e4b6f55e37e0efe8e35d805
treeee2773bfcdb36cbd4f721a2e79d325f4b5605c72tree
parentcb32de1b7e2591f844f18a5513fde8e2bd49bce0commit | diff
io_uring: don't enter poll loop if we have CQEs pending

We need to check if we have CQEs pending before starting a poll loop,
as those could be the events we will be spinning for (and hence we'll
find none). This can happen if a CQE triggers an error, or if it is
found by eg an IRQ before we get a chance to find it through polling.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
fs/io_uring.c diff | blob | history
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