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, 58 deletions

diff --git a/include/linux/percpu-rwsem.h b/include/linux/percpu-rwsem.h
deleted file mode 100644
index 153251c0..00000000
--- a/include/linux/percpu-rwsem.h
+++ /dev/null
@@ -1,58 +0,0 @@
-
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _LINUX_PERCPU_RWSEM_H
-#define _LINUX_PERCPU_RWSEM_H
-
-#include <pthread.h>
-#include <linux/preempt.h>
-
-struct percpu_rw_semaphore {
-	pthread_mutex_t		lock;
-};
-
-static inline void percpu_down_read_preempt_disable(struct percpu_rw_semaphore *sem)
-{
-	pthread_mutex_lock(&sem->lock);
-}
-
-static inline void percpu_down_read(struct percpu_rw_semaphore *sem)
-{
-	pthread_mutex_lock(&sem->lock);
-}
-
-static inline int percpu_down_read_trylock(struct percpu_rw_semaphore *sem)
-{
-	return !pthread_mutex_trylock(&sem->lock);
-}
-
-static inline void percpu_up_read_preempt_enable(struct percpu_rw_semaphore *sem)
-{
-	pthread_mutex_unlock(&sem->lock);
-}
-
-static inline void percpu_up_read(struct percpu_rw_semaphore *sem)
-{
-	pthread_mutex_unlock(&sem->lock);
-}
-
-static inline void percpu_down_write(struct percpu_rw_semaphore *sem)
-{
-	pthread_mutex_lock(&sem->lock);
-}
-
-static inline void percpu_up_write(struct percpu_rw_semaphore *sem)
-{
-	pthread_mutex_unlock(&sem->lock);
-}
-
-static inline void percpu_free_rwsem(struct percpu_rw_semaphore *sem) {}
-
-static inline int percpu_init_rwsem(struct percpu_rw_semaphore *sem)
-{
-	pthread_mutex_init(&sem->lock, NULL);
-	return 0;
-}
-
-#define percpu_rwsem_assert_held(sem)		do {} while (0)
-
-#endif