1 files changed, 3 insertions, 14 deletions
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 108af913ab3c..7ba4d54aec17 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -102,21 +102,10 @@ int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src)
 void exit_thread(struct task_struct *tsk)
 {
 	struct thread_struct *t = &tsk->thread;
-	struct io_bitmap *iobm = t->io_bitmap;
 	struct fpu *fpu = &t->fpu;
-	struct tss_struct *tss;
-
-	if (iobm) {
-		preempt_disable();
-		tss = this_cpu_ptr(&cpu_tss_rw);
-
-		t->io_bitmap = NULL;
-		clear_thread_flag(TIF_IO_BITMAP);
-		/* Invalidate the io bitmap base in the TSS */
-		tss->x86_tss.io_bitmap_base = IO_BITMAP_OFFSET_INVALID;
-		preempt_enable();
-		kfree(iobm);
-	}
+
+	if (test_thread_flag(TIF_IO_BITMAP))
+		io_bitmap_exit();
 
 	free_vm86(t);