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Diffstat (limited to 'Documentation/locking/mutex-design.rst')
| -rw-r--r-- | Documentation/locking/mutex-design.rst | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/locking/mutex-design.rst b/Documentation/locking/mutex-design.rst index 78540cd7f54b..7572339b2f12 100644 --- a/Documentation/locking/mutex-design.rst +++ b/Documentation/locking/mutex-design.rst @@ -101,6 +101,12 @@ features that make lock debugging easier and faster: - Detects multi-task circular deadlocks and prints out all affected locks and tasks (and only those tasks). +Releasing a mutex is not an atomic operation: Once a mutex release operation +has begun, another context may be able to acquire the mutex before the release +operation has fully completed. The mutex user must ensure that the mutex is not +destroyed while a release operation is still in progress - in other words, +callers of mutex_unlock() must ensure that the mutex stays alive until +mutex_unlock() has returned. Interfaces ---------- |