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xenbus: prefer list_for_each()

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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 <jbeulich@suse.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
This commit is contained in:
Jan Beulich 2016-10-24 09:03:49 -06:00 committed by David Vrabel
parent cb5f7e7c1d
commit e1e5b3ff41
1 changed files with 2 additions and 2 deletions
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4
drivers/xen/xenbus/xenbus_dev_frontend.c
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@ -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);