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io_uring: don't use TIF_NOTIFY_SIGNAL to test for availability of task_work

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[ Upstream commit 6434ec0186b80c734aa7a2acf95f75f5c6dd943b ]

Use task_work_pending() as a better test for whether we have task_work
or not, TIF_NOTIFY_SIGNAL is only valid if the any of the task_work
items had been queued with TWA_SIGNAL as the notification mechanism.
Hence task_work_pending() is a more reliable check.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
Stable-dep-of: 22537c9f7941 ("io_uring: use the right type for work_llist empty check")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jens Axboe 2022-12-17 13:40:17 -07:00 committed by Greg Kroah-Hartman
parent 007a23d38a
commit 0c9ce8f239
1 changed files with 1 additions and 2 deletions
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io_uring/io_uring.h
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@ -275,8 +275,7 @@ static inline int io_run_task_work(void)
static inline bool io_task_work_pending(struct io_ring_ctx *ctx)
{
return test_thread_flag(TIF_NOTIFY_SIGNAL) ||
!wq_list_empty(&ctx->work_llist);
return task_work_pending(current) || !wq_list_empty(&ctx->work_llist);
}
static inline int io_run_task_work_ctx(struct io_ring_ctx *ctx)