aboutsummaryrefslogtreecommitdiffstats
path: root/include
diff options
context:
space:
mode:
authorJ. Bruce Fields <bfields@citi.umich.edu>2008-04-07 15:59:05 -0400
committerJonathan Corbet <corbet@lwn.net>2008-04-11 15:17:46 -0400
commitdc07e721a26ec7e0adb66340f1763d220cfbbd0c (patch)
treeb31b5d9d826c4b2e161a0f3e833dab95abb5f6c1 /include
parentb40b5162ac4e5b94d16cd9fb0a87168b1633c7dd (diff)
Spell out behavior of atomic_dec_and_lock() in kerneldoc
A little more detail here wouldn't hurt. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/spinlock.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h
index 576a5f77d3bd..1129ee0a7180 100644
--- a/include/linux/spinlock.h
+++ b/include/linux/spinlock.h
@@ -341,6 +341,9 @@ static inline void double_spin_unlock(spinlock_t *l1, spinlock_t *l2,
341 * atomic_dec_and_lock - lock on reaching reference count zero 341 * atomic_dec_and_lock - lock on reaching reference count zero
342 * @atomic: the atomic counter 342 * @atomic: the atomic counter
343 * @lock: the spinlock in question 343 * @lock: the spinlock in question
344 *
345 * Decrements @atomic by 1. If the result is 0, returns true and locks
346 * @lock. Returns false for all other cases.
344 */ 347 */
345extern int _atomic_dec_and_lock(atomic_t *atomic, spinlock_t *lock); 348extern int _atomic_dec_and_lock(atomic_t *atomic, spinlock_t *lock);
346#define atomic_dec_and_lock(atomic, lock) \ 349#define atomic_dec_and_lock(atomic, lock) \