diff options
Diffstat (limited to 'kernel/futex.c')
| -rw-r--r-- | kernel/futex.c | 14 |
1 files changed, 1 insertions, 13 deletions
diff --git a/kernel/futex.c b/kernel/futex.c index e14f7cd45dbd..3463c916605a 100644 --- a/kernel/futex.c +++ b/kernel/futex.c @@ -331,17 +331,6 @@ static void compat_exit_robust_list(struct task_struct *curr); static inline void compat_exit_robust_list(struct task_struct *curr) { } #endif -static inline void futex_get_mm(union futex_key *key) -{ - mmgrab(key->private.mm); - /* - * Ensure futex_get_mm() implies a full barrier such that - * get_futex_key() implies a full barrier. This is relied upon - * as smp_mb(); (B), see the ordering comment above. - */ - smp_mb__after_atomic(); -} - /* * Reflects a new waiter being added to the waitqueue. */ @@ -432,7 +421,7 @@ static void get_futex_key_refs(union futex_key *key) smp_mb(); /* explicit smp_mb(); (B) */ break; case FUT_OFF_MMSHARED: - futex_get_mm(key); /* implies smp_mb(); (B) */ + smp_mb(); /* explicit smp_mb(); (B) */ break; default: /* @@ -465,7 +454,6 @@ static void drop_futex_key_refs(union futex_key *key) case FUT_OFF_INODE: break; case FUT_OFF_MMSHARED: - mmdrop(key->private.mm); break; } } |