[PATCH 09/11] srcu: Fix SRCU read flavor macro comments

["Paul E. McKenney" <paulmck@kernel.org>]

The SRCU_READ_FLAVOR_FAST and SRCU_READ_FLAVOR_FAST_UPDOWN comments
need repair.  The former fails to not that SRCU-fast can be used in NMI
handlers, and the latter says that it goes with srcu_read_lock_fast()
when it really goes with srcu_read_lock_fast_updown().  This commit
therefore fixes both comments.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
 include/linux/srcu.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/srcu.h b/include/linux/srcu.h
index bb44a0bd76968..81b1938512d5d 100644
--- a/include/linux/srcu.h
+++ b/include/linux/srcu.h
@@ -69,8 +69,8 @@ int init_srcu_struct_fast_updown(struct srcu_struct *ssp);
 #define SRCU_READ_FLAVOR_NORMAL		0x1		// srcu_read_lock().
 #define SRCU_READ_FLAVOR_NMI		0x2		// srcu_read_lock_nmisafe().
 //					0x4		// SRCU-lite is no longer with us.
-#define SRCU_READ_FLAVOR_FAST		0x4		// srcu_read_lock_fast().
-#define SRCU_READ_FLAVOR_FAST_UPDOWN	0x8		// srcu_read_lock_fast().
+#define SRCU_READ_FLAVOR_FAST		0x4		// srcu_read_lock_fast(), also NMI-safe.
+#define SRCU_READ_FLAVOR_FAST_UPDOWN	0x8		// srcu_read_lock_fast_updown().
 #define SRCU_READ_FLAVOR_ALL		(SRCU_READ_FLAVOR_NORMAL | SRCU_READ_FLAVOR_NMI | \
 					 SRCU_READ_FLAVOR_FAST | SRCU_READ_FLAVOR_FAST_UPDOWN)
 						// All of the above.
-- 
2.40.1