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 41f3990..236f29b 100644
--- a/fs/notify/mark.c
+++ b/fs/notify/mark.c
@@ -349,10 +349,8 @@
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);