]> Git Repo - linux.git/commitdiff
xenbus: prefer list_for_each()
authorJan Beulich <[email protected]>
Mon, 24 Oct 2016 15:03:49 +0000 (09:03 -0600)
committerDavid Vrabel <[email protected]>
Mon, 24 Oct 2016 15:08:04 +0000 (16:08 +0100)
This is more efficient than list_for_each_safe() when list modification
is accompanied by breaking out of the loop.

Signed-off-by: Jan Beulich <[email protected]>
Reviewed-by: Juergen Gross <[email protected]>
Signed-off-by: David Vrabel <[email protected]>
drivers/xen/xenbus/xenbus_dev_frontend.c

index 7487971f9f788b12a637216c29cc853bb933c1ca..fe60b12de92043575a0893b5c139e850472efdda 100644 (file)
@@ -364,7 +364,7 @@ out:
 
 static int xenbus_write_watch(unsigned msg_type, struct xenbus_file_priv *u)
 {
-       struct watch_adapter *watch, *tmp_watch;
+       struct watch_adapter *watch;
        char *path, *token;
        int err, rc;
        LIST_HEAD(staging_q);
@@ -399,7 +399,7 @@ static int xenbus_write_watch(unsigned msg_type, struct xenbus_file_priv *u)
                }
                list_add(&watch->list, &u->watches);
        } else {
-               list_for_each_entry_safe(watch, tmp_watch, &u->watches, list) {
+               list_for_each_entry(watch, &u->watches, list) {
                        if (!strcmp(watch->token, token) &&
                            !strcmp(watch->watch.node, path)) {
                                unregister_xenbus_watch(&watch->watch);
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