After "mm: oom: let oom_reap_task and exit_mmap to run concurrently",
mmput_async() is no longer used. Remove it.
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Signed-off-by: David Rientjes <rientjes@xxxxxxxxxx>
---
include/linux/sched/mm.h | 6 ------
kernel/fork.c | 16 ----------------
2 files changed, 22 deletions(-)
diff --git a/include/linux/sched/mm.h b/include/linux/sched/mm.h
--- a/include/linux/sched/mm.h
+++ b/include/linux/sched/mm.h
@@ -84,12 +84,6 @@ static inline bool mmget_not_zero(struct mm_struct *mm)
/* mmput gets rid of the mappings and all user-space */
extern void mmput(struct mm_struct *);
-#ifdef CONFIG_MMU
-/* same as above but performs the slow path from the async context. Can
- * be called from the atomic context as well
- */
-extern void mmput_async(struct mm_struct *);
-#endif
/* Grab a reference to a task's mm, if it is not already going away */
extern struct mm_struct *get_task_mm(struct task_struct *task);
diff --git a/kernel/fork.c b/kernel/fork.c
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -925,22 +925,6 @@ void mmput(struct mm_struct *mm)
}
EXPORT_SYMBOL_GPL(mmput);
-#ifdef CONFIG_MMU
-static void mmput_async_fn(struct work_struct *work)
-{
- struct mm_struct *mm = container_of(work, struct mm_struct, async_put_work);
- __mmput(mm);
-}
-
-void mmput_async(struct mm_struct *mm)
-{
- if (atomic_dec_and_test(&mm->mm_users)) {
- INIT_WORK(&mm->async_put_work, mmput_async_fn);
- schedule_work(&mm->async_put_work);
- }
-}
-#endif
-
/**
* set_mm_exe_file - change a reference to the mm's executable file
*
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