[PARISC] More useful readwrite lock helpers
spinlock.c needs _can_lock helpers. Rewrite _is_locked helpers to be
_can_lock helpers.
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
diff --git a/include/asm-parisc/spinlock.h b/include/asm-parisc/spinlock.h
index 16c2ac0..a93960e 100644
--- a/include/asm-parisc/spinlock.h
+++ b/include/asm-parisc/spinlock.h
@@ -134,14 +134,22 @@
return 1;
}
-static __inline__ int __raw_is_read_locked(raw_rwlock_t *rw)
+/*
+ * read_can_lock - would read_trylock() succeed?
+ * @lock: the rwlock in question.
+ */
+static __inline__ int __raw_read_can_lock(raw_rwlock_t *rw)
{
- return rw->counter > 0;
+ return rw->counter >= 0;
}
-static __inline__ int __raw_is_write_locked(raw_rwlock_t *rw)
+/*
+ * write_can_lock - would write_trylock() succeed?
+ * @lock: the rwlock in question.
+ */
+static __inline__ int __raw_write_can_lock(raw_rwlock_t *rw)
{
- return rw->counter < 0;
+ return !rw->counter;
}
#endif /* __ASM_SPINLOCK_H */