+static inline bool bch2_dev_list_has_dev(struct bch_devs_list devs,
+ unsigned dev)
+{
+ unsigned i;
+
+ for (i = 0; i < devs.nr; i++)
+ if (devs.devs[i] == dev)
+ return true;
+
+ return false;
+}
+
+static inline void bch2_dev_list_drop_dev(struct bch_devs_list *devs,
+ unsigned dev)
+{
+ unsigned i;
+
+ for (i = 0; i < devs->nr; i++)
+ if (devs->devs[i] == dev) {
+ array_remove_item(devs->devs, devs->nr, i);
+ return;
+ }
+}
+
+static inline void bch2_dev_list_add_dev(struct bch_devs_list *devs,
+ unsigned dev)
+{
+ BUG_ON(bch2_dev_list_has_dev(*devs, dev));
+ BUG_ON(devs->nr >= BCH_REPLICAS_MAX);
+ devs->devs[devs->nr++] = dev;
+}
+
+static inline struct bch_devs_list bch2_dev_list_single(unsigned dev)
+{
+ return (struct bch_devs_list) { .nr = 1, .devs[0] = dev };
+}
+