Index: sys/compat/linuxkpi/common/include/linux/fs.h
===================================================================
--- sys/compat/linuxkpi/common/include/linux/fs.h
+++ sys/compat/linuxkpi/common/include/linux/fs.h
@@ -254,6 +254,13 @@
 	return (f);
 }
 
+static inline bool
+get_file_rcu(struct linux_file *f)
+{
+	return (refcount_acquire_if_not_zero(
+	    f->_file == NULL ? &f->f_count : &f->_file->f_count));
+}
+
 static inline struct inode *
 igrab(struct inode *inode)
 {
Index: sys/compat/linuxkpi/common/src/linux_compat.c
===================================================================
--- sys/compat/linuxkpi/common/src/linux_compat.c
+++ sys/compat/linuxkpi/common/src/linux_compat.c
@@ -90,6 +90,7 @@
 #include <linux/poll.h>
 #include <linux/smp.h>
 #include <linux/wait_bit.h>
+#include <linux/rcupdate.h>
 
 #if defined(__i386__) || defined(__amd64__)
 #include <asm/smp.h>
@@ -1519,6 +1520,9 @@
 	if (td == NULL)
 		td = curthread;
 
+	linux_rcu_barrier(RCU_TYPE_REGULAR);
+	linux_rcu_barrier(RCU_TYPE_SLEEPABLE);
+
 	error = 0;
 	filp->f_flags = file->f_flag;
 	linux_set_current(td);