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io_uring: make io_fill_cqe_aux honour CQE32 

Don't let io_fill_cqe_aux() post 16B cqes for CQE32 rings, neither the
kernel nor the userspace expect this to happen.

Fixes: 76c68fbf1a ("io_uring: enable CQE32")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/64fae669fae1b7083aa15d0cd807f692b0880b9a.1655287457.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2022-06-15 11:23:07 +01:00 committed by Jens Axboe
parent cd94903d3b
commit c5595975b5
1 changed files with 5 additions and 0 deletions
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5
fs/io_uring.c
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@ -2518,6 +2518,11 @@ static noinline bool io_fill_cqe_aux(struct io_ring_ctx *ctx, u64 user_data,
WRITE_ONCE(cqe->user_data, user_data);
WRITE_ONCE(cqe->res, res);
WRITE_ONCE(cqe->flags, cflags);
if (ctx->flags & IORING_SETUP_CQE32) {
WRITE_ONCE(cqe->big_cqe[0], 0);
WRITE_ONCE(cqe->big_cqe[1], 0);
}
return true;
}
return io_cqring_event_overflow(ctx, user_data, res, cflags, 0, 0);