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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-12 21:27:05 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-12 21:27:05 +0300 |
| commit | 165d05d88c27697fe444a6eae4f3882834ef8826 (patch) | |
| tree | 95f60ef99cec11882f5ee9579a6de28eb9fc77c9 /include | |
| parent | 7bf3142625c193db2dfbd7df2176b7cd910d9e4f (diff) | |
| parent | e5480572706da1b2c2dc2c6484eab64f92b9263b (diff) | |
| download | linux-165d05d88c27697fe444a6eae4f3882834ef8826.tar.xz | |
Merge tag 'locking_urgent_for_v5.15_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fixes from Borislav Petkov:
- Fix the futex PI requeue machinery to not return to userspace in
inconsistent state
- Avoid a potential null pointer dereference in the ww_mutex deadlock
check
- Other smaller cleanups and optimizations
* tag 'locking_urgent_for_v5.15_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/rtmutex: Fix ww_mutex deadlock check
futex: Remove unused variable 'vpid' in futex_proxy_trylock_atomic()
futex: Avoid redundant task lookup
futex: Clarify comment for requeue_pi_wake_futex()
futex: Prevent inconsistent state and exit race
futex: Return error code instead of assigning it without effect
locking/rwsem: Add missing __init_rwsem() for PREEMPT_RT
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/rwsem.h | 12 |
1 files changed, 2 insertions, 10 deletions
diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h index 426e98e0b675..352c6127cb90 100644 --- a/include/linux/rwsem.h +++ b/include/linux/rwsem.h @@ -142,22 +142,14 @@ struct rw_semaphore { #define DECLARE_RWSEM(lockname) \ struct rw_semaphore lockname = __RWSEM_INITIALIZER(lockname) -#ifdef CONFIG_DEBUG_LOCK_ALLOC -extern void __rwsem_init(struct rw_semaphore *rwsem, const char *name, +extern void __init_rwsem(struct rw_semaphore *rwsem, const char *name, struct lock_class_key *key); -#else -static inline void __rwsem_init(struct rw_semaphore *rwsem, const char *name, - struct lock_class_key *key) -{ -} -#endif #define init_rwsem(sem) \ do { \ static struct lock_class_key __key; \ \ - init_rwbase_rt(&(sem)->rwbase); \ - __rwsem_init((sem), #sem, &__key); \ + __init_rwsem((sem), #sem, &__key); \ } while (0) static __always_inline int rwsem_is_locked(struct rw_semaphore *sem) |