[PATCH 3/6] io_uring/iopoll: fix unexpected returns

Pavel Begunkov
2022-09-08T15:59:06Z

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: dacbb30102689 ("io_uring: add IORING_SETUP_DEFER_TASKRUN")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
io_uring/io_uring.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index 7f60d384e917..8233a375e8c9 100644
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -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))
--
2.37.2