net: xen-netback: hash.c: Use built-in RCU list checking (f3265971) · Commits · 戴 / test

list_for_each_entry_rcu has built-in RCU and lock checking. Pass cond argument to list_for_each_entry_rcu. Signed-off-by:

drivers/net/xen-netback/hash.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -51,7 +51,8 @@ static void xenvif_add_hash(struct xenvif vif, const u8 tag,

		found = false;
		oldest = NULL;
		list_for_each_entry_rcu(entry, &vif->hash.cache.list, link) {
		list_for_each_entry_rcu(entry, &vif->hash.cache.list, link,
		lockdep_is_held(&vif->hash.cache.lock)) {
		/* Make sure we don't add duplicate entries */
		if (entry->len == len &&
		memcmp(entry->tag, tag, len) == 0)
		@@ -102,7 +103,8 @@ static void xenvif_flush_hash(struct xenvif *vif)

		spin_lock_irqsave(&vif->hash.cache.lock, flags);

		list_for_each_entry_rcu(entry, &vif->hash.cache.list, link) {
		list_for_each_entry_rcu(entry, &vif->hash.cache.list, link,
		lockdep_is_held(&vif->hash.cache.lock)) {
		list_del_rcu(&entry->link);
		vif->hash.cache.count--;
		kfree_rcu(entry, rcu);