fs/bcachefs/reflink.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _BCACHEFS_REFLINK_H
   3 #define _BCACHEFS_REFLINK_H
   4
   5 int bch2_reflink_p_validate(struct bch_fs *, struct bkey_s_c,
   6                             struct bkey_validate_context);
   7 void bch2_reflink_p_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
   8 bool bch2_reflink_p_merge(struct bch_fs *, struct bkey_s, struct bkey_s_c);
   9 int bch2_trigger_reflink_p(struct btree_trans *, enum btree_id, unsigned,
  10                            struct bkey_s_c, struct bkey_s,
  11                            enum btree_iter_update_trigger_flags);
  12
  13 #define bch2_bkey_ops_reflink_p ((struct bkey_ops) {            \
  14         .key_validate   = bch2_reflink_p_validate,              \
  15         .val_to_text    = bch2_reflink_p_to_text,               \
  16         .key_merge      = bch2_reflink_p_merge,                 \
  17         .trigger        = bch2_trigger_reflink_p,               \
  18         .min_val_size   = 16,                                   \
  19 })
  20
  21 int bch2_reflink_v_validate(struct bch_fs *, struct bkey_s_c,
  22                             struct bkey_validate_context);
  23 void bch2_reflink_v_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c);
  24 int bch2_trigger_reflink_v(struct btree_trans *, enum btree_id, unsigned,
  25                            struct bkey_s_c, struct bkey_s,
  26                            enum btree_iter_update_trigger_flags);
  27
  28 #define bch2_bkey_ops_reflink_v ((struct bkey_ops) {            \
  29         .key_validate   = bch2_reflink_v_validate,              \
  30         .val_to_text    = bch2_reflink_v_to_text,               \
  31         .swab           = bch2_ptr_swab,                        \
  32         .trigger        = bch2_trigger_reflink_v,               \
  33         .min_val_size   = 8,                                    \
  34 })
  35
  36 int bch2_indirect_inline_data_validate(struct bch_fs *, struct bkey_s_c,
  37                                        struct bkey_validate_context);
  38 void bch2_indirect_inline_data_to_text(struct printbuf *,
  39                                 struct bch_fs *, struct bkey_s_c);
  40 int bch2_trigger_indirect_inline_data(struct btree_trans *,
  41                                          enum btree_id, unsigned,
  42                               struct bkey_s_c, struct bkey_s,
  43                               enum btree_iter_update_trigger_flags);
  44
  45 #define bch2_bkey_ops_indirect_inline_data ((struct bkey_ops) { \
  46         .key_validate   = bch2_indirect_inline_data_validate,   \
  47         .val_to_text    = bch2_indirect_inline_data_to_text,    \
  48         .trigger        = bch2_trigger_indirect_inline_data,    \
  49         .min_val_size   = 8,                                    \
  50 })
  51
  52 static inline const __le64 *bkey_refcount_c(struct bkey_s_c k)
  53 {
  54         switch (k.k->type) {
  55         case KEY_TYPE_reflink_v:
  56                 return &bkey_s_c_to_reflink_v(k).v->refcount;
  57         case KEY_TYPE_indirect_inline_data:
  58                 return &bkey_s_c_to_indirect_inline_data(k).v->refcount;
  59         default:
  60                 return NULL;
  61         }
  62 }
  63
  64 static inline __le64 *bkey_refcount(struct bkey_s k)
  65 {
  66         switch (k.k->type) {
  67         case KEY_TYPE_reflink_v:
  68                 return &bkey_s_to_reflink_v(k).v->refcount;
  69         case KEY_TYPE_indirect_inline_data:
  70                 return &bkey_s_to_indirect_inline_data(k).v->refcount;
  71         default:
  72                 return NULL;
  73         }
  74 }
  75
  76 struct bkey_s_c bch2_lookup_indirect_extent(struct btree_trans *, struct btree_iter *,
  77                                             s64 *, struct bkey_s_c_reflink_p,
  78                                             bool, unsigned);
  79
  80 s64 bch2_remap_range(struct bch_fs *, subvol_inum, u64,
  81                      subvol_inum, u64, u64, u64, s64 *,
  82                      bool);
  83
  84 int bch2_gc_reflink_done(struct bch_fs *);
  85 int bch2_gc_reflink_start(struct bch_fs *);
  86
  87 #endif /* _BCACHEFS_REFLINK_H */