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mm: export use_mm/unuse_mm to modules 

vhost net module wants to do copy to/from user from a kernel thread,
which needs use_mm. Export it to modules.

Acked-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael S. Tsirkin 2010-01-14 06:17:18 +00:00 committed by David S. Miller
parent 05c2828c72
commit 5da779c34c
1 changed files with 3 additions and 0 deletions
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3
mm/mmu_context.c
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@ -5,6 +5,7 @@
#include <linux/mm.h>
#include <linux/mmu_context.h>
#include <linux/module.h>
#include <linux/sched.h>
#include <asm/mmu_context.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);