* lib/kernel_lock.c
*
* This is the traditional BKL - big kernel lock. Largely
- * relegated to obsolescense, but used by various less
+ * relegated to obsolescence, but used by various less
* important (or lazy) subsystems.
*/
#include <linux/smp_lock.h>
* The 'big kernel semaphore'
*
* This mutex is taken and released recursively by lock_kernel()
- * and unlock_kernel(). It is transparently dropped and reaquired
+ * and unlock_kernel(). It is transparently dropped and reacquired
* over schedule(). It is used to protect legacy code that hasn't
* been migrated to a proper locking design yet.
*
* The 'big kernel lock'
*
* This spinlock is taken and released recursively by lock_kernel()
- * and unlock_kernel(). It is transparently dropped and reaquired
+ * and unlock_kernel(). It is transparently dropped and reacquired
* over schedule(). It is used to protect legacy code that hasn't
* been migrated to a proper locking design yet.
*
static inline void __unlock_kernel(void)
{
- spin_unlock(&kernel_flag);
+ /*
+ * the BKL is not covered by lockdep, so we open-code the
+ * unlocking sequence (and thus avoid the dep-chain ops):
+ */
+ _raw_spin_unlock(&kernel_flag);
+ preempt_enable();
}
/*