diff options
Diffstat (limited to 'fs/io_uring.c')
| -rw-r--r-- | fs/io_uring.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index e9b27cdaa735..af6811ddcfbd 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -1710,22 +1710,22 @@ static int io_req_task_work_add(struct io_kiocb *req, struct callback_head *cb) { struct task_struct *tsk = req->task; struct io_ring_ctx *ctx = req->ctx; - int ret, notify = TWA_RESUME; + int ret, notify; /* - * SQPOLL kernel thread doesn't need notification, just a wakeup. - * If we're not using an eventfd, then TWA_RESUME is always fine, - * as we won't have dependencies between request completions for - * other kernel wait conditions. + * SQPOLL kernel thread doesn't need notification, just a wakeup. For + * all other cases, use TWA_SIGNAL unconditionally to ensure we're + * processing task_work. There's no reliable way to tell if TWA_RESUME + * will do the job. */ - if (ctx->flags & IORING_SETUP_SQPOLL) - notify = 0; - else if (ctx->cq_ev_fd) + notify = 0; + if (!(ctx->flags & IORING_SETUP_SQPOLL)) notify = TWA_SIGNAL; ret = task_work_add(tsk, cb, notify); if (!ret) wake_up_process(tsk); + return ret; } |