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41 lines
1.3 KiB
C
41 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BCACHEFS_NOCOW_LOCKING_H
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#define _BCACHEFS_NOCOW_LOCKING_H
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#include "bcachefs.h"
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#include "alloc/background.h"
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#include "nocow_locking_types.h"
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#include <linux/hash.h>
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static inline struct nocow_lock_bucket *bucket_nocow_lock(struct bucket_nocow_lock_table *t,
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u64 dev_bucket)
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{
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unsigned h = hash_64(dev_bucket, BUCKET_NOCOW_LOCKS_BITS);
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return t->l + (h & (BUCKET_NOCOW_LOCKS - 1));
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}
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#define BUCKET_NOCOW_LOCK_UPDATE (1 << 0)
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bool bch2_bucket_nocow_is_locked(struct bucket_nocow_lock_table *, struct bpos);
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void __bch2_bucket_nocow_unlock(struct bucket_nocow_lock_table *, u64, int);
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static inline void bch2_bucket_nocow_unlock(struct bucket_nocow_lock_table *t, struct bpos bucket,
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int flags)
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{
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__bch2_bucket_nocow_unlock(t, bucket_to_u64(bucket), flags);
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}
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void bch2_bkey_nocow_unlock(struct bch_fs *, struct bkey_s_c, int);
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bool bch2_bkey_nocow_trylock(struct bch_fs *, struct bkey_ptrs_c, int);
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void bch2_bkey_nocow_lock(struct bch_fs *, struct bkey_ptrs_c, int);
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void bch2_nocow_locks_to_text(struct printbuf *, struct bucket_nocow_lock_table *);
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void bch2_fs_nocow_locking_exit(struct bch_fs *);
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void bch2_fs_nocow_locking_init_early(struct bch_fs *);
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#endif /* _BCACHEFS_NOCOW_LOCKING_H */
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