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, 42 deletions

diff --git a/include/linux/key.h b/include/linux/key.h
deleted file mode 100644
index cc6859a9..00000000
--- a/include/linux/key.h
+++ /dev/null
@@ -1,42 +0,0 @@
-#ifndef _LINUX_KEY_H
-#define _LINUX_KEY_H
-
-#include <linux/types.h>
-#include <linux/atomic.h>
-#include <keyutils.h>
-
-struct user_key_payload {
-	size_t		datalen;	/* length of this data */
-	char		data[0];	/* actual data */
-};
-
-struct key {
-	atomic_t		usage;		/* number of references */
-	key_serial_t		serial;		/* key serial number */
-	struct rw_semaphore	sem;		/* change vs change sem */
-	struct user_key_payload	payload;
-};
-
-static inline const struct user_key_payload *user_key_payload(const struct key *key)
-{
-	return &key->payload;
-}
-
-static inline void key_put(struct key *key)
-{
-	if (atomic_dec_and_test(&key->usage))
-		free(key);
-}
-
-static inline struct key *__key_get(struct key *key)
-{
-	atomic_inc(&key->usage);
-	return key;
-}
-
-static inline struct key *key_get(struct key *key)
-{
-	return key ? __key_get(key) : key;
-}
-
-#endif /* _LINUX_KEY_H */