在 2021/12/9 下午11:59, Jens Axboe 写道:
If we have someone potentially waiting for tracked requests to finish,
ensure that we check in_idle and wake them up appropriately.
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
---
Hi Jens,
I saw every/several( in batching cases) io_clean_op() followed by an
io_put_task() which does the same thing
as this patch, so it seems this one is not neccessary? Correct me if I'm
wrong since I haven't touch this code for
a long time.
Regards,
Hao
fs/io_uring.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index c4f217613f56..b4d5b8d168bf 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -6640,6 +6640,8 @@ static void io_clean_op(struct io_kiocb *req)
struct io_uring_task *tctx = req->task->io_uring;
atomic_dec(&tctx->inflight_tracked);
+ if (unlikely(atomic_read(&tctx->in_idle)))
+ wake_up(&tctx->wait);
}
if (req->flags & REQ_F_CREDS)
put_cred(req->creds);
