bcachefs: Kill fs_usage_online

More dead code deletion.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

fs/bcachefs/buckets.c

@@ -37,16 +37,6 @@ static u64 reserve_factor(u64 r)
 	return r + (round_up(r, (1 << RESERVE_FACTOR)) >> RESERVE_FACTOR);
 }
 
-u64 bch2_fs_sectors_used(struct bch_fs *c, struct bch_fs_usage_online *fs_usage)
-{
-	return min(fs_usage->u.b.hidden +
-		   fs_usage->u.b.btree +
-		   fs_usage->u.b.data +
-		   reserve_factor(fs_usage->u.b.reserved +
-				  fs_usage->online_reserved),
-		   c->capacity);
-}
-
 static struct bch_fs_usage_short
 __bch2_fs_usage_read_short(struct bch_fs *c)
 {

fs/bcachefs/buckets.h

@@ -283,23 +283,11 @@ static inline unsigned fs_usage_u64s(struct bch_fs *c)
 	return __fs_usage_u64s(READ_ONCE(c->replicas.nr));
 }
 
-static inline unsigned __fs_usage_online_u64s(unsigned nr_replicas)
-{
-	return sizeof(struct bch_fs_usage_online) / sizeof(u64) + nr_replicas;
-}
-
-static inline unsigned fs_usage_online_u64s(struct bch_fs *c)
-{
-	return __fs_usage_online_u64s(READ_ONCE(c->replicas.nr));
-}
-
 static inline unsigned dev_usage_u64s(void)
 {
 	return sizeof(struct bch_dev_usage) / sizeof(u64);
 }
 
-u64 bch2_fs_sectors_used(struct bch_fs *, struct bch_fs_usage_online *);
-
 struct bch_fs_usage_short
 bch2_fs_usage_read_short(struct bch_fs *);
 

fs/bcachefs/buckets_types.h

@@ -64,11 +64,6 @@ struct bch_fs_usage {
 	u64			replicas[];
 };
 
-struct bch_fs_usage_online {
-	u64			online_reserved;
-	struct bch_fs_usage	u;
-};
-
 struct bch_fs_usage_short {
 	u64			capacity;
 	u64			used;