From: Andreas Gruenbacher <agruen@suse.de>
Date: Wed, 28 Jul 2010 14:18:38 +0000 (-0400)
Subject: fsnotify: Exchange list heads instead of moving elements
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=8778abb9a88fc4a74d8776ffaadf7214cf33c61e;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

fsnotify: Exchange list heads instead of moving elements

Instead of moving list elements from destroy_list to &private_destroy_list,
exchange the list heads.

Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Signed-off-by: Eric Paris <eparis@redhat.com>
---

diff --git a/fs/notify/mark.c b/fs/notify/mark.c
index 41f3990f900b..236f29b066ed 100644
--- a/fs/notify/mark.c
+++ b/fs/notify/mark.c
@@ -349,10 +349,8 @@ static int fsnotify_mark_destroy(void *ignored)
 
 	for (;;) {
 		spin_lock(&destroy_lock);
-		list_for_each_entry_safe(mark, next, &destroy_list, destroy_list) {
-			list_del(&mark->destroy_list);
-			list_add(&mark->destroy_list, &private_destroy_list);
-		}
+		/* exchange the list head */
+		list_replace_init(&destroy_list, &private_destroy_list);
 		spin_unlock(&destroy_lock);
 
 		synchronize_srcu(&fsnotify_mark_srcu);