io_uring: remove dead 'ctx' argument and move forward declaration

We don't use 'ctx' at all in io_sq_thread_drop_mm(), it just works
on the mm of the current task. Drop the argument.

Move io_file_put_work() to where we have the other forward declarations
of functions.

Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 7f2a2cb..3ce02a1 100644 (file)
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -902,6 +902,7 @@ static int io_file_get(struct io_submit_state *state, struct io_kiocb *req,
 static void __io_queue_sqe(struct io_kiocb *req,
                           const struct io_uring_sqe *sqe,
                           struct io_comp_state *cs);
+static void io_file_put_work(struct work_struct *work);
 
 static ssize_t io_import_iovec(int rw, struct io_kiocb *req,
                               struct iovec **iovec, struct iov_iter *iter,
@@ -942,7 +943,7 @@ static void __io_put_req_task(struct io_kiocb *req)
                put_task_struct(req->task);
 }
 
-static void io_sq_thread_drop_mm(struct io_ring_ctx *ctx)
+static void io_sq_thread_drop_mm(void)
 {
        struct mm_struct *mm = current->mm;
 
@@ -977,8 +978,6 @@ static inline void req_set_fail_links(struct io_kiocb *req)
                req->flags |= REQ_F_FAIL_LINK;
 }
 
-static void io_file_put_work(struct work_struct *work);
-
 /*
  * Note: must call io_req_init_async() for the first time you
  * touch any members of io_wq_work.
@@ -6339,7 +6338,7 @@ static int io_sq_thread(void *data)
                         * adding ourselves to the waitqueue, as the unuse/drop
                         * may sleep.
                         */
-                       io_sq_thread_drop_mm(ctx);
+                       io_sq_thread_drop_mm();
 
                        /*
                         * We're polling. If we're within the defined idle
@@ -6410,7 +6409,7 @@ static int io_sq_thread(void *data)
 
        io_run_task_work();
 
-       io_sq_thread_drop_mm(ctx);
+       io_sq_thread_drop_mm();
        revert_creds(old_cred);
 
        kthread_parkme();