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, 0 insertions, 45 deletions

diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
deleted file mode 100644
index d8a86b45..00000000
--- a/include/linux/backing-dev.h
+++ /dev/null
@@ -1,45 +0,0 @@
-#ifndef _LINUX_BACKING_DEV_H
-#define _LINUX_BACKING_DEV_H
-
-#include <linux/list.h>
-
-typedef int (congested_fn)(void *, int);
-
-enum wb_congested_state {
-	WB_async_congested,	/* The async (write) queue is getting full */
-	WB_sync_congested,	/* The sync queue is getting full */
-};
-
-struct backing_dev_info {
-	struct list_head bdi_list;
-	unsigned	ra_pages;
-	unsigned	capabilities;
-
-	congested_fn	*congested_fn;
-	void		*congested_data;
-};
-
-#define BDI_CAP_NO_ACCT_DIRTY	0x00000001
-#define BDI_CAP_NO_WRITEBACK	0x00000002
-#define BDI_CAP_NO_ACCT_WB	0x00000004
-#define BDI_CAP_STABLE_WRITES	0x00000008
-#define BDI_CAP_STRICTLIMIT	0x00000010
-#define BDI_CAP_CGROUP_WRITEBACK 0x00000020
-
-static inline int bdi_congested(struct backing_dev_info *bdi, int cong_bits)
-{
-	return 0;
-}
-
-static inline int __must_check bdi_setup_and_register(struct backing_dev_info *bdi,
-						      char *name)
-{
-	bdi->capabilities = 0;
-	return 0;
-}
-
-static inline void bdi_destroy(struct backing_dev_info *bdi) {}
-
-#define VM_MAX_READAHEAD	128	/* kbytes */
-
-#endif	/* _LINUX_BACKING_DEV_H */