X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Fkernel_lock.c;h=e0fdfddb406ec3975673f150f46bd3302bc08599;hb=b361735043e3001eadb1d40916fd1a4fca1a9363;hp=cb5490ec00f20f4fea3640275192f20d942a7fba;hpb=ddbf9ef385bfbef897210733abfb73cb9b94ecec;p=linux-2.6

diff --git a/lib/kernel_lock.c b/lib/kernel_lock.c
index cb5490ec00..e0fdfddb40 100644
--- a/lib/kernel_lock.c
+++ b/lib/kernel_lock.c
@@ -14,7 +14,7 @@
  * 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.
  *
@@ -92,7 +92,7 @@ void __lockfunc unlock_kernel(void)
  * 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.
  *
@@ -177,7 +177,12 @@ static inline void __lock_kernel(void)
 
 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();
 }
 
 /*