export use_mm and unuse_mm for filesystem modules.

required for btrfs directio worker threads.

---
mm/mmu_context.c | 3 +++

1 files changed, 3 insertions(+), 0 deletions(-)

index ded9081..daabf4d 100644
@@ -3,6 +3,7 @@
 * See ../COPYING for licensing terms.
 */
 
+#include <linux/module.h>

#include <linux/mm.h>
#include <linux/mmu_context.h>
#include <linux/sched.h>
@@ -37,6 +38,7 @@ void use_mm(struct mm_struct *mm)

	if (active_mm != mm)
		mmdrop(active_mm);
}

+EXPORT_SYMBOL_GPL(use_mm);

/*
* unuse_mm
@@ -56,3 +58,4 @@ void unuse_mm(struct mm_struct *mm)

	enter_lazy_tlb(mm, tsk);
	task_unlock(tsk);
}

+EXPORT_SYMBOL_GPL(unuse_mm);

1.5.6.3

Careful. It's very easy to fsck up on biarch architectures with that stuff.

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