diff -Nupr src.orig/fs/aio.c src/fs/aio.c

--- src.orig/fs/aio.c	2016-12-15 19:55:38.992000000 +0000

+++ src/fs/aio.c	2016-12-15 19:56:52.588000000 +0000

@@ -271,9 +271,16 @@ static int __init aio_setup(void)

 }

 __initcall(aio_setup);

+void kpatch_aio_foo(void)

+{

+	if (!jiffies)

+		printk("kpatch aio foo\n");

+}

+

 static void put_aio_ring_file(struct kioctx *ctx)

 {

 	struct file *aio_ring_file = ctx->aio_ring_file;

+	kpatch_aio_foo();

 	if (aio_ring_file) {

 		truncate_setsize(aio_ring_file->f_inode, 0);