diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/sched.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 61ec12b5b77a..054168543a45 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -638,6 +638,8 @@ static inline void mmdrop(struct mm_struct * mm) /* mmput gets rid of the mappings and all user-space */ extern void mmput(struct mm_struct *); +/* Grab a reference to the mm if its not already going away */ +extern struct mm_struct *mmgrab(struct mm_struct *); /* Remove the current tasks stale references to the old mm_struct */ extern void mm_release(struct task_struct *, struct mm_struct *); @@ -745,7 +747,7 @@ static inline struct mm_struct * get_task_mm(struct task_struct * task) task_lock(task); mm = task->mm; if (mm) - atomic_inc(&mm->mm_users); + mm = mmgrab(mm); task_unlock(task); return mm; |