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| author | Thomas Zimmermann <tzimmermann@suse.de> | 2026-04-27 11:26:49 +0300 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2026-04-27 11:26:49 +0300 |
| commit | 0fc8f6200d2313278fbf4539bbab74677c685531 (patch) | |
| tree | 35f839d8e2244e0575cbdf60e8505048b5424885 /include/linux/rwsem.h | |
| parent | d13e855ee923c2ae78307bf6c354305f1406b9e2 (diff) | |
| parent | 254f49634ee16a731174d2ae34bc50bd5f45e731 (diff) | |
| download | linux-0fc8f6200d2313278fbf4539bbab74677c685531.tar.xz | |
Merge drm/drm-fixes into drm-misc-fixes
Getting fixes and updates from v7.1-rc1.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Diffstat (limited to 'include/linux/rwsem.h')
| -rw-r--r-- | include/linux/rwsem.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h index 9bf1d93d3d7b..6a1a7bae5f81 100644 --- a/include/linux/rwsem.h +++ b/include/linux/rwsem.h @@ -57,7 +57,7 @@ context_lock_struct(rw_semaphore) { struct optimistic_spin_queue osq; /* spinner MCS lock */ #endif raw_spinlock_t wait_lock; - struct list_head wait_list; + struct rwsem_waiter *first_waiter __guarded_by(&wait_lock); #ifdef CONFIG_DEBUG_RWSEMS void *magic; #endif @@ -106,7 +106,7 @@ static inline void rwsem_assert_held_write_nolockdep(const struct rw_semaphore * .owner = ATOMIC_LONG_INIT(0), \ __RWSEM_OPT_INIT(name) \ .wait_lock = __RAW_SPIN_LOCK_UNLOCKED(name.wait_lock),\ - .wait_list = LIST_HEAD_INIT((name).wait_list), \ + .first_waiter = NULL, \ __RWSEM_DEBUG_INIT(name) \ __RWSEM_DEP_MAP_INIT(name) } @@ -129,9 +129,9 @@ do { \ * rwsem to see if somebody from an incompatible type is wanting access to the * lock. */ -static inline int rwsem_is_contended(struct rw_semaphore *sem) +static inline bool rwsem_is_contended(struct rw_semaphore *sem) { - return !list_empty(&sem->wait_list); + return data_race(sem->first_waiter != NULL); } #if defined(CONFIG_DEBUG_RWSEMS) || defined(CONFIG_DETECT_HUNG_TASK_BLOCKER) |