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Code Pull requests 5 Wiki Activity

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

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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>
This commit is contained in:
Jens Axboe 2022-12-17 13:40:17 -07:00
parent 44a84da452
commit 6434ec0186
1 changed files with 1 additions and 2 deletions
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3
io_uring/io_uring.h
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@ -266,8 +266,7 @@ 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)