X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=Documentation%2Fspinlocks.txt;h=619699dde5938b64c6d63e1059cf0ed702c128af;hb=32382492eb18e8e20be382a1743d0c08469d1e84;hp=471e75389778eb0583be31eed6cce9d6babf67fa;hpb=017f021c7e5fe3f82ccc5cbb7b1750e66e00f527;p=safe%2Fjmp%2Flinux-2.6

diff --git a/Documentation/spinlocks.txt b/Documentation/spinlocks.txt
index 471e753..619699d 100644
--- a/Documentation/spinlocks.txt
+++ b/Documentation/spinlocks.txt
@@ -5,6 +5,28 @@ Please use DEFINE_SPINLOCK()/DEFINE_RWLOCK() or
 __SPIN_LOCK_UNLOCKED()/__RW_LOCK_UNLOCKED() as appropriate for static
 initialization.
 
+Most of the time, you can simply turn:
+
+	static spinlock_t xxx_lock = SPIN_LOCK_UNLOCKED;
+
+into:
+
+	static DEFINE_SPINLOCK(xxx_lock);
+
+Static structure member variables go from:
+
+	struct foo bar {
+		.lock	=	SPIN_LOCK_UNLOCKED;
+	};
+
+to:
+
+	struct foo bar {
+		.lock	=	__SPIN_LOCK_UNLOCKED(bar.lock);
+	};
+
+Declaration of static rw_locks undergo a similar transformation.
+
 Dynamic initialization, when necessary, may be performed as
 demonstrated below.