move Rust sources to top level, C sources into c_src

This moves the Rust sources out of rust_src/ and into the top level.
Running the bcachefs executable out of the development tree is now:

$ ./target/release/bcachefs command
or
$ cargo run --profile release -- command

instead of "./bcachefs command".

Building and installing is still:

$ make && make install

Signed-off-by: Thomas Bertschinger <tahbertschinger@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

1 files changed, 37 insertions, 0 deletions

diff --git a/c_src/libbcachefs/rebalance_types.h b/c_src/libbcachefs/rebalance_types.h
new file mode 100644
index 00000000..0fffb536
--- /dev/null
+++ b/c_src/libbcachefs/rebalance_types.h
@@ -0,0 +1,37 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _BCACHEFS_REBALANCE_TYPES_H
+#define _BCACHEFS_REBALANCE_TYPES_H
+
+#include "bbpos_types.h"
+#include "move_types.h"
+
+#define BCH_REBALANCE_STATES()		\
+	x(waiting)			\
+	x(working)			\
+	x(scanning)
+
+enum bch_rebalance_states {
+#define x(t)	BCH_REBALANCE_##t,
+	BCH_REBALANCE_STATES()
+#undef x
+};
+
+struct bch_fs_rebalance {
+	struct task_struct __rcu	*thread;
+	struct bch_pd_controller pd;
+
+	enum bch_rebalance_states	state;
+	u64				wait_iotime_start;
+	u64				wait_iotime_end;
+	u64				wait_wallclock_start;
+
+	struct bch_move_stats		work_stats;
+
+	struct bbpos			scan_start;
+	struct bbpos			scan_end;
+	struct bch_move_stats		scan_stats;
+
+	unsigned			enabled:1;
+};
+
+#endif /* _BCACHEFS_REBALANCE_TYPES_H */