diff options
author | Thomas Bertschinger <tahbertschinger@gmail.com> | 2024-01-15 23:41:02 -0700 |
---|---|---|
committer | Kent Overstreet <kent.overstreet@linux.dev> | 2024-01-16 01:47:05 -0500 |
commit | f5baaf48e3e82b1caf9f5cd1207d4d6feba3a2e5 (patch) | |
tree | 59f7b0e4667df7a9d3d5a45725f2aaab3e79b4c5 /libbcachefs/two_state_shared_lock.h | |
parent | fb35dbfdc5a9446fbb856dae5542b23963e28b89 (diff) |
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>
Diffstat (limited to 'libbcachefs/two_state_shared_lock.h')
-rw-r--r-- | libbcachefs/two_state_shared_lock.h | 59 |
1 files changed, 0 insertions, 59 deletions
diff --git a/libbcachefs/two_state_shared_lock.h b/libbcachefs/two_state_shared_lock.h deleted file mode 100644 index 90580177..00000000 --- a/libbcachefs/two_state_shared_lock.h +++ /dev/null @@ -1,59 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _BCACHEFS_TWO_STATE_LOCK_H -#define _BCACHEFS_TWO_STATE_LOCK_H - -#include <linux/atomic.h> -#include <linux/sched.h> -#include <linux/wait.h> - -#include "util.h" - -/* - * Two-state lock - can be taken for add or block - both states are shared, - * like read side of rwsem, but conflict with other state: - */ -typedef struct { - atomic_long_t v; - wait_queue_head_t wait; -} two_state_lock_t; - -static inline void two_state_lock_init(two_state_lock_t *lock) -{ - atomic_long_set(&lock->v, 0); - init_waitqueue_head(&lock->wait); -} - -static inline void bch2_two_state_unlock(two_state_lock_t *lock, int s) -{ - long i = s ? 1 : -1; - - EBUG_ON(atomic_long_read(&lock->v) == 0); - - if (atomic_long_sub_return_release(i, &lock->v) == 0) - wake_up_all(&lock->wait); -} - -static inline bool bch2_two_state_trylock(two_state_lock_t *lock, int s) -{ - long i = s ? 1 : -1; - long v = atomic_long_read(&lock->v), old; - - do { - old = v; - - if (i > 0 ? v < 0 : v > 0) - return false; - } while ((v = atomic_long_cmpxchg_acquire(&lock->v, - old, old + i)) != old); - return true; -} - -void __bch2_two_state_lock(two_state_lock_t *, int); - -static inline void bch2_two_state_lock(two_state_lock_t *lock, int s) -{ - if (!bch2_two_state_trylock(lock, s)) - __bch2_two_state_lock(lock, s); -} - -#endif /* _BCACHEFS_TWO_STATE_LOCK_H */ |