| Message ID | 741fe19ee895393f54d01b8f7d25242e7fa27120.1612466514.git.asml.silence@gmail.com |
|---|---|
| State | Accepted |
| Commit | aec18a57edad562d620f7d19016de1fc0cc2208c |
| Headers | show |
| Series | io_uring: drop mm/files between task_work_submit | expand |
On 2/4/21 12:22 PM, Pavel Begunkov wrote: > Since SQPOLL task can be shared and so task_work entries can be a mix of > them, we need to drop mm and files before trying to issue next request. Thanks, applied.
diff --git a/fs/io_uring.c b/fs/io_uring.c index 5d3348d66f06..1f68105a41ed 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -2205,6 +2205,9 @@ static void __io_req_task_submit(struct io_kiocb *req) else __io_req_task_cancel(req, -EFAULT); mutex_unlock(&ctx->uring_lock); + + if (ctx->flags & IORING_SETUP_SQPOLL) + io_sq_thread_drop_mm_files(); } static void io_req_task_submit(struct callback_head *cb)
Since SQPOLL task can be shared and so task_work entries can be a mix of them, we need to drop mm and files before trying to issue next request. Cc: stable@vger.kernel.org # 5.10+ Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> --- fs/io_uring.c | 3 +++ 1 file changed, 3 insertions(+)