fuse: export fuse_end_request()

task #28910367
commit 04ec5af0776e9baefed59891f12adbcb5fa71a23 upstream

virtio-fs will need to complete requests from outside fs/fuse/dev.c.
Make the symbol visible.
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: NLiu Bo <bo.liu@linux.alibaba.com>
Reviewed-by: NJoseph Qi <joseph.qi@linux.alibaba.com>

fs/fuse/dev.c

@@ -380,7 +380,7 @@ static void flush_bg_queue(struct fuse_conn *fc)
  * the 'end' callback is called if given, else the reference to the
  * request is released
  */
-static void request_end(struct fuse_conn *fc, struct fuse_req *req)
+void fuse_request_end(struct fuse_conn *fc, struct fuse_req *req)
 {
 	struct fuse_iqueue *fiq = &fc->iq;
 
@@ -424,6 +424,7 @@ static void request_end(struct fuse_conn *fc, struct fuse_req *req)
 put_request:
 	fuse_put_request(fc, req);
 }
+EXPORT_SYMBOL_GPL(fuse_request_end);
 
 static void queue_interrupt(struct fuse_iqueue *fiq, struct fuse_req *req)
 {
@@ -497,13 +498,15 @@ static void __fuse_request_send(struct fuse_conn *fc, struct fuse_req *req)
 	} else {
 		req->in.h.unique = fuse_get_unique(fiq);
 		queue_request(fiq, req);
-		/* acquire extra reference, since request is still needed
-		   after request_end() */
+		/*
+		 * acquire extra reference, since request is still
+		 * needed after fuse_request_end()
+		 */
 		__fuse_get_request(req);
 		spin_unlock(&fiq->lock);
 
 		request_wait_answer(fc, req);
-		/* Pairs with smp_wmb() in request_end() */
+		/* Pairs with smp_wmb() in fuse_request_end() */
 		smp_rmb();
 	}
 }
@@ -1236,7 +1239,7 @@ __releases(fiq->lock)
  * the pending list and copies request data to userspace buffer.  If
  * no reply is needed (FORGET) or request has been aborted or there
  * was an error during the copying then it's finished by calling
- * request_end().  Otherwise add it to the processing list, and set
+ * fuse_request_end().  Otherwise add it to the processing list, and set
  * the 'sent' flag.
  */
 static ssize_t fuse_dev_do_read(struct fuse_dev *fud, struct file *file,
@@ -1298,7 +1301,7 @@ static ssize_t fuse_dev_do_read(struct fuse_dev *fud, struct file *file,
 		/* SETXATTR is special, since it may contain too large data */
 		if (in->h.opcode == FUSE_SETXATTR)
 			req->out.h.error = -E2BIG;
-		request_end(fc, req);
+		fuse_request_end(fc, req);
 		goto restart;
 	}
 	spin_lock(&fpq->lock);
@@ -1340,7 +1343,7 @@ static ssize_t fuse_dev_do_read(struct fuse_dev *fud, struct file *file,
 	if (!test_bit(FR_PRIVATE, &req->flags))
 		list_del_init(&req->list);
 	spin_unlock(&fpq->lock);
-	request_end(fc, req);
+	fuse_request_end(fc, req);
 	return err;
 
  err_unlock:
@@ -1847,7 +1850,7 @@ static int copy_out_args(struct fuse_copy_state *cs, struct fuse_out *out,
  * the write buffer.  The request is then searched on the processing
  * list by the unique ID found in the header.  If found, then remove
  * it from the list and copy the rest of the buffer to the request.
- * The request is finished by calling request_end()
+ * The request is finished by calling fuse_request_end().
  */
 static ssize_t fuse_dev_do_write(struct fuse_dev *fud,
 				 struct fuse_copy_state *cs, size_t nbytes)
@@ -1934,7 +1937,7 @@ static ssize_t fuse_dev_do_write(struct fuse_dev *fud,
 		list_del_init(&req->list);
 	spin_unlock(&fpq->lock);
 
-	request_end(fc, req);
+	fuse_request_end(fc, req);
 
 	return err ? err : nbytes;
 
@@ -2080,7 +2083,7 @@ static void end_requests(struct fuse_conn *fc, struct list_head *head)
 		req->out.h.error = -ECONNABORTED;
 		clear_bit(FR_SENT, &req->flags);
 		list_del_init(&req->list);
-		request_end(fc, req);
+		fuse_request_end(fc, req);
 	}
 }
 

fs/fuse/fuse_i.h

@@ -879,6 +879,11 @@ void fuse_request_send_background(struct fuse_conn *fc, struct fuse_req *req);
 void fuse_request_send_background_locked(struct fuse_conn *fc,
 					 struct fuse_req *req);
 
+/**
+ * End a finished request
+ */
+void fuse_request_end(struct fuse_conn *fc, struct fuse_req *req);
+
 /* Abort all requests */
 void fuse_abort_conn(struct fuse_conn *fc, bool is_abort);
 void fuse_wait_aborted(struct fuse_conn *fc);