D31672.id94167.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>
	@@ -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);