diff options
author | Kent Overstreet <kent.overstreet@linux.dev> | 2024-01-16 17:00:02 -0500 |
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committer | Kent Overstreet <kent.overstreet@linux.dev> | 2024-01-16 17:17:23 -0500 |
commit | b5fd066153c40a70a29caa1ea7987723ab687763 (patch) | |
tree | 6d43a8b0a90d549a54c65565ac96c92b3e84b594 /libbcachefs/nocow_locking.h | |
parent | 06ff8b55b70fda44d91b31b5511fafd1680a8934 (diff) |
Move c_src dirs back to toplevel
We just wanted c sourcefiles out of the top level, not c source
directories.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'libbcachefs/nocow_locking.h')
-rw-r--r-- | libbcachefs/nocow_locking.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/libbcachefs/nocow_locking.h b/libbcachefs/nocow_locking.h new file mode 100644 index 00000000..f9d6a426 --- /dev/null +++ b/libbcachefs/nocow_locking.h @@ -0,0 +1,50 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _BCACHEFS_NOCOW_LOCKING_H +#define _BCACHEFS_NOCOW_LOCKING_H + +#include "bcachefs.h" +#include "alloc_background.h" +#include "nocow_locking_types.h" + +#include <linux/hash.h> + +static inline struct nocow_lock_bucket *bucket_nocow_lock(struct bucket_nocow_lock_table *t, + u64 dev_bucket) +{ + unsigned h = hash_64(dev_bucket, BUCKET_NOCOW_LOCKS_BITS); + + return t->l + (h & (BUCKET_NOCOW_LOCKS - 1)); +} + +#define BUCKET_NOCOW_LOCK_UPDATE (1 << 0) + +bool bch2_bucket_nocow_is_locked(struct bucket_nocow_lock_table *, struct bpos); +void bch2_bucket_nocow_unlock(struct bucket_nocow_lock_table *, struct bpos, int); +bool __bch2_bucket_nocow_trylock(struct nocow_lock_bucket *, u64, int); +void __bch2_bucket_nocow_lock(struct bucket_nocow_lock_table *, + struct nocow_lock_bucket *, u64, int); + +static inline void bch2_bucket_nocow_lock(struct bucket_nocow_lock_table *t, + struct bpos bucket, int flags) +{ + u64 dev_bucket = bucket_to_u64(bucket); + struct nocow_lock_bucket *l = bucket_nocow_lock(t, dev_bucket); + + __bch2_bucket_nocow_lock(t, l, dev_bucket, flags); +} + +static inline bool bch2_bucket_nocow_trylock(struct bucket_nocow_lock_table *t, + struct bpos bucket, int flags) +{ + u64 dev_bucket = bucket_to_u64(bucket); + struct nocow_lock_bucket *l = bucket_nocow_lock(t, dev_bucket); + + return __bch2_bucket_nocow_trylock(l, dev_bucket, flags); +} + +void bch2_nocow_locks_to_text(struct printbuf *, struct bucket_nocow_lock_table *); + +void bch2_fs_nocow_locking_exit(struct bch_fs *); +int bch2_fs_nocow_locking_init(struct bch_fs *); + +#endif /* _BCACHEFS_NOCOW_LOCKING_H */ |