block: Use backing format driver during image creation

[qemu.git] / qemu-lock.h

diff --git a/qemu-lock.h b/qemu-lock.h
index 26661baae33f192f20329f88ec80c7fc5fc1b7b6..65ca0843265452297de9645025248365662cd52d 100644 (file)
--- a/qemu-lock.h
+++ b/qemu-lock.h
@@ -12,8 +12,7 @@
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA  02110-1301 USA
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>
  */
 
 /* Locking primitives.  Most of this code should be redundant -
@@ -24,7 +23,7 @@
    likely to release it soon.  In environments where you have more threads
    than physical CPUs (the extreme case being a single CPU host) a spinlock
    simply wastes CPU until the OS decides to preempt it.  */
-#if defined(USE_NPTL)
+#if defined(CONFIG_USE_NPTL)
 
 #include <pthread.h>
 #define spin_lock pthread_mutex_lock
@@ -225,11 +224,6 @@ static inline void spin_unlock(spinlock_t *lock)
 {
     resetlock(lock);
 }
-
-static inline int spin_trylock(spinlock_t *lock)
-{
-    return !testandset(lock);
-}
 #else
 static inline void spin_lock(spinlock_t *lock)
 {
@@ -238,11 +232,6 @@ static inline void spin_lock(spinlock_t *lock)
 static inline void spin_unlock(spinlock_t *lock)
 {
 }
-
-static inline int spin_trylock(spinlock_t *lock)
-{
-    return 1;
-}
 #endif
 
 #endif