bcachefs: Use x-macros for btree node flags

This is for adding an array of strings for btree node flag names.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>

fs/bcachefs/btree_cache.c

@@ -13,6 +13,13 @@
 #include <linux/prefetch.h>
 #include <linux/sched/mm.h>
 
+const char * const bch2_btree_node_flags[] = {
+#define x(f)	#f,
+	BTREE_FLAGS()
+#undef x
+	NULL
+};
+
 void bch2_recalc_btree_reserve(struct bch_fs *c)
 {
 	unsigned i, reserve = 16;
@@ -413,7 +420,7 @@ void bch2_fs_btree_cache_exit(struct bch_fs *c)
 
 		if (btree_node_dirty(b))
 			bch2_btree_complete_write(c, b, btree_current_write(b));
-		clear_btree_node_dirty(c, b);
+		clear_btree_node_dirty_acct(c, b);
 
 		btree_node_data_free(c, b);
 	}

fs/bcachefs/btree_cache.h

@@ -5,6 +5,8 @@
 #include "bcachefs.h"
 #include "btree_types.h"
 
+extern const char * const bch2_btree_node_flags[];
+
 struct btree_iter;
 
 void bch2_recalc_btree_reserve(struct bch_fs *);

fs/bcachefs/btree_io.h

@@ -15,18 +15,13 @@ struct btree;
 struct btree_iter;
 struct btree_node_read_all;
 
-static inline bool btree_node_dirty(struct btree *b)
-{
-	return test_bit(BTREE_NODE_dirty, &b->flags);
-}
-
-static inline void set_btree_node_dirty(struct bch_fs *c, struct btree *b)
+static inline void set_btree_node_dirty_acct(struct bch_fs *c, struct btree *b)
 {
 	if (!test_and_set_bit(BTREE_NODE_dirty, &b->flags))
 		atomic_inc(&c->btree_cache.dirty);
 }
 
-static inline void clear_btree_node_dirty(struct bch_fs *c, struct btree *b)
+static inline void clear_btree_node_dirty_acct(struct bch_fs *c, struct btree *b)
 {
 	if (test_and_clear_bit(BTREE_NODE_dirty, &b->flags))
 		atomic_dec(&c->btree_cache.dirty);

fs/bcachefs/btree_types.h

@@ -429,7 +429,29 @@ struct btree_trans {
 	struct replicas_delta_list *fs_usage_deltas;
 };
 
-#define BTREE_FLAG(flag)						\
+#define BTREE_FLAGS()							\
+	x(read_in_flight)						\
+	x(read_error)							\
+	x(dirty)							\
+	x(need_write)							\
+	x(noevict)							\
+	x(write_idx)							\
+	x(accessed)							\
+	x(write_in_flight)						\
+	x(write_in_flight_inner)					\
+	x(just_written)							\
+	x(dying)							\
+	x(fake)								\
+	x(need_rewrite)							\
+	x(never_write)
+
+enum btree_flags {
+#define x(flag)	BTREE_NODE_##flag,
+	BTREE_FLAGS()
+#undef x
+};
+
+#define x(flag)								\
 static inline bool btree_node_ ## flag(struct btree *b)			\
 {	return test_bit(BTREE_NODE_ ## flag, &b->flags); }		\
 									\
@@ -439,36 +461,8 @@ static inline void set_btree_node_ ## flag(struct btree *b)		\
 static inline void clear_btree_node_ ## flag(struct btree *b)		\
 {	clear_bit(BTREE_NODE_ ## flag, &b->flags); }
 
-enum btree_flags {
-	BTREE_NODE_read_in_flight,
-	BTREE_NODE_read_error,
-	BTREE_NODE_dirty,
-	BTREE_NODE_need_write,
-	BTREE_NODE_noevict,
-	BTREE_NODE_write_idx,
-	BTREE_NODE_accessed,
-	BTREE_NODE_write_in_flight,
-	BTREE_NODE_write_in_flight_inner,
-	BTREE_NODE_just_written,
-	BTREE_NODE_dying,
-	BTREE_NODE_fake,
-	BTREE_NODE_need_rewrite,
-	BTREE_NODE_never_write,
-};
-
-BTREE_FLAG(read_in_flight);
-BTREE_FLAG(read_error);
-BTREE_FLAG(need_write);
-BTREE_FLAG(noevict);
-BTREE_FLAG(write_idx);
-BTREE_FLAG(accessed);
-BTREE_FLAG(write_in_flight);
-BTREE_FLAG(write_in_flight_inner);
-BTREE_FLAG(just_written);
-BTREE_FLAG(dying);
-BTREE_FLAG(fake);
-BTREE_FLAG(need_rewrite);
-BTREE_FLAG(never_write);
+BTREE_FLAGS()
+#undef x
 
 static inline struct btree_write *btree_current_write(struct btree *b)
 {

fs/bcachefs/btree_update_interior.c

@@ -271,7 +271,7 @@ static struct btree *bch2_btree_node_alloc(struct btree_update *as, unsigned lev
 	six_lock_write(&b->c.lock, NULL, NULL);
 
 	set_btree_node_accessed(b);
-	set_btree_node_dirty(c, b);
+	set_btree_node_dirty_acct(c, b);
 	set_btree_node_need_write(b);
 
 	bch2_bset_init_first(b, &b->data->keys);
@@ -868,7 +868,7 @@ static void bch2_btree_interior_update_will_free_node(struct btree_update *as,
 		closure_wake_up(&c->btree_interior_update_wait);
 	}
 
-	clear_btree_node_dirty(c, b);
+	clear_btree_node_dirty_acct(c, b);
 	clear_btree_node_need_write(b);
 
 	/*
@@ -1172,7 +1172,7 @@ static void bch2_insert_fixup_btree_ptr(struct btree_update *as,
 		bch2_btree_node_iter_advance(node_iter, b);
 
 	bch2_btree_bset_insert_key(trans, path, b, node_iter, insert);
-	set_btree_node_dirty(c, b);
+	set_btree_node_dirty_acct(c, b);
 	set_btree_node_need_write(b);
 }
 

fs/bcachefs/btree_update_leaf.c

@@ -221,7 +221,7 @@ static bool btree_insert_key_leaf(struct btree_trans *trans,
 	bch2_btree_add_journal_pin(c, b, trans->journal_res.seq);
 
 	if (unlikely(!btree_node_dirty(b)))
-		set_btree_node_dirty(c, b);
+		set_btree_node_dirty_acct(c, b);
 
 	live_u64s_added = (int) b->nr.live_u64s - old_live_u64s;
 	u64s_added = (int) bset_u64s(t) - old_u64s;