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io_uring/iopoll: fix unexpected returns

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We may propagate a positive return value of io_run_task_work() out of
io_iopoll_check(), which breaks our tests. io_run_task_work() doesn't
return anything useful for us, ignore the return value.

Fixes: c0e0d6ba25 ("io_uring: add IORING_SETUP_DEFER_TASKRUN")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Reviewed-by: Dylan Yudaken <dylany@fb.com>
Link: https://lore.kernel.org/r/c442bb87f79cea10b3f857cbd4b9a4f0a0493fa3.1662652536.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2022-09-08 16:56:54 +01:00 committed by Jens Axboe
parent 6567506b68
commit 9d54bd6a3b
1 changed files with 1 additions and 4 deletions
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5
io_uring/io_uring.c
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@ -1435,12 +1435,9 @@ static int io_iopoll_check(struct io_ring_ctx *ctx, long min)
u32 tail = ctx->cached_cq_tail;
mutex_unlock(&ctx->uring_lock);
ret = io_run_task_work();
io_run_task_work();
mutex_lock(&ctx->uring_lock);
if (ret < 0)
break;
/* some requests don't go through iopoll_list */
if (tail != ctx->cached_cq_tail ||
wq_list_empty(&ctx->iopoll_list))