D31672.id94185.diff
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	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>
	@@ -1538,6 +1539,7 @@
	ldev = filp->f_cdev;
	if (ldev != NULL)
	linux_cdev_deref(ldev);
	+ linux_synchronize_rcu(RCU_TYPE_REGULAR);
	kfree(filp);

	return (error);