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 /c_src/libbcachefs/seqmutex.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 'c_src/libbcachefs/seqmutex.h')
-rw-r--r-- | c_src/libbcachefs/seqmutex.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/c_src/libbcachefs/seqmutex.h b/c_src/libbcachefs/seqmutex.h new file mode 100644 index 00000000..c1860d81 --- /dev/null +++ b/c_src/libbcachefs/seqmutex.h @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _BCACHEFS_SEQMUTEX_H +#define _BCACHEFS_SEQMUTEX_H + +#include <linux/mutex.h> + +struct seqmutex { + struct mutex lock; + u32 seq; +}; + +#define seqmutex_init(_lock) mutex_init(&(_lock)->lock) + +static inline bool seqmutex_trylock(struct seqmutex *lock) +{ + return mutex_trylock(&lock->lock); +} + +static inline void seqmutex_lock(struct seqmutex *lock) +{ + mutex_lock(&lock->lock); +} + +static inline void seqmutex_unlock(struct seqmutex *lock) +{ + lock->seq++; + mutex_unlock(&lock->lock); +} + +static inline u32 seqmutex_seq(struct seqmutex *lock) +{ + return lock->seq; +} + +static inline bool seqmutex_relock(struct seqmutex *lock, u32 seq) +{ + if (lock->seq != seq || !mutex_trylock(&lock->lock)) + return false; + + if (lock->seq != seq) { + mutex_unlock(&lock->lock); + return false; + } + + return true; +} + +#endif /* _BCACHEFS_SEQMUTEX_H */ |