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Linux/fs/bcachefs/nocow_locking.h

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Diff markup

Differences between /fs/bcachefs/nocow_locking.h (Architecture mips) and /fs/bcachefs/nocow_locking.h (Architecture alpha)


  1 /* SPDX-License-Identifier: GPL-2.0 */              1 /* SPDX-License-Identifier: GPL-2.0 */
  2 #ifndef _BCACHEFS_NOCOW_LOCKING_H                   2 #ifndef _BCACHEFS_NOCOW_LOCKING_H
  3 #define _BCACHEFS_NOCOW_LOCKING_H                   3 #define _BCACHEFS_NOCOW_LOCKING_H
  4                                                     4 
  5 #include "bcachefs.h"                               5 #include "bcachefs.h"
  6 #include "alloc_background.h"                       6 #include "alloc_background.h"
  7 #include "nocow_locking_types.h"                    7 #include "nocow_locking_types.h"
  8                                                     8 
  9 #include <linux/hash.h>                             9 #include <linux/hash.h>
 10                                                    10 
 11 static inline struct nocow_lock_bucket *bucket     11 static inline struct nocow_lock_bucket *bucket_nocow_lock(struct bucket_nocow_lock_table *t,
 12                                                    12                                                           u64 dev_bucket)
 13 {                                                  13 {
 14         unsigned h = hash_64(dev_bucket, BUCKE     14         unsigned h = hash_64(dev_bucket, BUCKET_NOCOW_LOCKS_BITS);
 15                                                    15 
 16         return t->l + (h & (BUCKET_NOCOW_LOCKS     16         return t->l + (h & (BUCKET_NOCOW_LOCKS - 1));
 17 }                                                  17 }
 18                                                    18 
 19 #define BUCKET_NOCOW_LOCK_UPDATE        (1 <<      19 #define BUCKET_NOCOW_LOCK_UPDATE        (1 << 0)
 20                                                    20 
 21 bool bch2_bucket_nocow_is_locked(struct bucket     21 bool bch2_bucket_nocow_is_locked(struct bucket_nocow_lock_table *, struct bpos);
 22 void bch2_bucket_nocow_unlock(struct bucket_no     22 void bch2_bucket_nocow_unlock(struct bucket_nocow_lock_table *, struct bpos, int);
 23 bool __bch2_bucket_nocow_trylock(struct nocow_     23 bool __bch2_bucket_nocow_trylock(struct nocow_lock_bucket *, u64, int);
 24 void __bch2_bucket_nocow_lock(struct bucket_no     24 void __bch2_bucket_nocow_lock(struct bucket_nocow_lock_table *,
 25                               struct nocow_loc     25                               struct nocow_lock_bucket *, u64, int);
 26                                                    26 
 27 static inline void bch2_bucket_nocow_lock(stru     27 static inline void bch2_bucket_nocow_lock(struct bucket_nocow_lock_table *t,
 28                                           stru     28                                           struct bpos bucket, int flags)
 29 {                                                  29 {
 30         u64 dev_bucket = bucket_to_u64(bucket)     30         u64 dev_bucket = bucket_to_u64(bucket);
 31         struct nocow_lock_bucket *l = bucket_n     31         struct nocow_lock_bucket *l = bucket_nocow_lock(t, dev_bucket);
 32                                                    32 
 33         __bch2_bucket_nocow_lock(t, l, dev_buc     33         __bch2_bucket_nocow_lock(t, l, dev_bucket, flags);
 34 }                                                  34 }
 35                                                    35 
 36 static inline bool bch2_bucket_nocow_trylock(s     36 static inline bool bch2_bucket_nocow_trylock(struct bucket_nocow_lock_table *t,
 37                                           stru     37                                           struct bpos bucket, int flags)
 38 {                                                  38 {
 39         u64 dev_bucket = bucket_to_u64(bucket)     39         u64 dev_bucket = bucket_to_u64(bucket);
 40         struct nocow_lock_bucket *l = bucket_n     40         struct nocow_lock_bucket *l = bucket_nocow_lock(t, dev_bucket);
 41                                                    41 
 42         return __bch2_bucket_nocow_trylock(l,      42         return __bch2_bucket_nocow_trylock(l, dev_bucket, flags);
 43 }                                                  43 }
 44                                                    44 
 45 void bch2_nocow_locks_to_text(struct printbuf      45 void bch2_nocow_locks_to_text(struct printbuf *, struct bucket_nocow_lock_table *);
 46                                                    46 
 47 void bch2_fs_nocow_locking_exit(struct bch_fs      47 void bch2_fs_nocow_locking_exit(struct bch_fs *);
 48 int bch2_fs_nocow_locking_init(struct bch_fs *     48 int bch2_fs_nocow_locking_init(struct bch_fs *);
 49                                                    49 
 50 #endif /* _BCACHEFS_NOCOW_LOCKING_H */             50 #endif /* _BCACHEFS_NOCOW_LOCKING_H */
 51                                                    51 

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