[PATCH 4/5] fs/locks: split out __locks_wake_one()

[NeilBrown <neilb@xxxxxxxx>]

This functionality will be useful in the next patch, so
split it out from __locks_wake_up_blocks().

Signed-off-by: NeilBrown <neilb@xxxxxxxx>
---
 fs/locks.c |   15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/fs/locks.c b/fs/locks.c
index d06658b2dc7a..fc64016d01ee 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -710,6 +710,15 @@ static void __locks_delete_block(struct file_lock *waiter)
 	waiter->fl_blocker = NULL;
 }
 
+static void __locks_wake_one(struct file_lock *waiter)
+{
+	__locks_delete_block(waiter);
+	if (waiter->fl_lmops && waiter->fl_lmops->lm_notify)
+		waiter->fl_lmops->lm_notify(waiter);
+	else
+		wake_up(&waiter->fl_wait);
+}
+
 static void __locks_wake_up_blocks(struct file_lock *blocker)
 {
 	while (!list_empty(&blocker->fl_blocked)) {
@@ -717,11 +726,7 @@ static void __locks_wake_up_blocks(struct file_lock *blocker)
 
 		waiter = list_first_entry(&blocker->fl_blocked,
 				struct file_lock, fl_block);
-		__locks_delete_block(waiter);
-		if (waiter->fl_lmops && waiter->fl_lmops->lm_notify)
-			waiter->fl_lmops->lm_notify(waiter);
-		else
-			wake_up(&waiter->fl_wait);
+		__locks_wake_one(waiter);
 	}
 }