#define MMF_HAS_UPROBES 19 /* has uprobes */
#define MMF_RECALC_UPROBES 20 /* MMF_HAS_UPROBES can be wrong */
-#define MMF_OOM_REAPED 21 /* mm has been already reaped */
-#define MMF_OOM_NOT_REAPABLE 22 /* mm couldn't be reaped */
+#define MMF_OOM_SKIP 21 /* mm is of no interest for the OOM killer */
#define MMF_INIT_MASK (MMF_DUMPABLE_MASK | MMF_DUMP_FILTER_MASK)
atomic_t sigcnt;
atomic_t live;
int nr_threads;
- atomic_t oom_victims; /* # of TIF_MEDIE threads in this thread group */
struct list_head thread_head;
wait_queue_head_t wait_chldexit; /* for wait4() */
short oom_score_adj; /* OOM kill score adjustment */
short oom_score_adj_min; /* OOM kill score adjustment min value.
* Only settable by CAP_SYS_RESOURCE. */
+ struct mm_struct *oom_mm; /* recorded mm when the thread group got
+ * killed by the oom killer */
struct mutex cred_guard_mutex; /* guard against foreign influences on
* credential calculations
__mmdrop(mm);
}
+static inline void mmdrop_async_fn(struct work_struct *work)
+{
+ struct mm_struct *mm = container_of(work, struct mm_struct, async_put_work);
+ __mmdrop(mm);
+}
+
+static inline void mmdrop_async(struct mm_struct *mm)
+{
+ if (unlikely(atomic_dec_and_test(&mm->mm_count))) {
+ INIT_WORK(&mm->async_put_work, mmdrop_async_fn);
+ schedule_work(&mm->async_put_work);
+ }
+}
+
static inline bool mmget_not_zero(struct mm_struct *mm)
{
return atomic_inc_not_zero(&mm->mm_users);