git.sesse.net Git - bcachefs-tools-debian/blob - libbcachefs/reflink.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _BCACHEFS_REFLINK_H
   3 #define _BCACHEFS_REFLINK_H
   4
   5 enum bkey_invalid_flags;
   6
   7 int bch2_reflink_p_invalid(const struct bch_fs *, struct bkey_s_c,
   8                            enum bkey_invalid_flags, struct printbuf *);
   9 void bch2_reflink_p_to_text(struct printbuf *, struct bch_fs *,
  10                             struct bkey_s_c);
  11 bool bch2_reflink_p_merge(struct bch_fs *, struct bkey_s, struct bkey_s_c);
  12
  13 #define bch2_bkey_ops_reflink_p ((struct bkey_ops) {            \
  14         .key_invalid    = bch2_reflink_p_invalid,               \
  15         .val_to_text    = bch2_reflink_p_to_text,               \
  16         .key_merge      = bch2_reflink_p_merge,                 \
  17         .trans_trigger  = bch2_trans_mark_reflink_p,            \
  18         .atomic_trigger = bch2_mark_reflink_p,                  \
  19         .min_val_size   = 16,                                   \
  20 })
  21
  22 int bch2_reflink_v_invalid(const struct bch_fs *, struct bkey_s_c,
  23                            enum bkey_invalid_flags, struct printbuf *);
  24 void bch2_reflink_v_to_text(struct printbuf *, struct bch_fs *,
  25                             struct bkey_s_c);
  26 int bch2_trans_mark_reflink_v(struct btree_trans *, enum btree_id, unsigned,
  27                               struct bkey_s_c, struct bkey_i *, unsigned);
  28
  29 #define bch2_bkey_ops_reflink_v ((struct bkey_ops) {            \
  30         .key_invalid    = bch2_reflink_v_invalid,               \
  31         .val_to_text    = bch2_reflink_v_to_text,               \
  32         .swab           = bch2_ptr_swab,                        \
  33         .trans_trigger  = bch2_trans_mark_reflink_v,            \
  34         .atomic_trigger = bch2_mark_extent,                     \
  35         .min_val_size   = 8,                                    \
  36 })
  37
  38 int bch2_indirect_inline_data_invalid(const struct bch_fs *, struct bkey_s_c,
  39                                       enum bkey_invalid_flags, struct printbuf *);
  40 void bch2_indirect_inline_data_to_text(struct printbuf *,
  41                                 struct bch_fs *, struct bkey_s_c);
  42 int bch2_trans_mark_indirect_inline_data(struct btree_trans *,
  43                                          enum btree_id, unsigned,
  44                               struct bkey_s_c, struct bkey_i *,
  45                               unsigned);
  46
  47 #define bch2_bkey_ops_indirect_inline_data ((struct bkey_ops) { \
  48         .key_invalid    = bch2_indirect_inline_data_invalid,    \
  49         .val_to_text    = bch2_indirect_inline_data_to_text,    \
  50         .trans_trigger  = bch2_trans_mark_indirect_inline_data, \
  51         .min_val_size   = 8,                                    \
  52 })
  53
  54 static inline const __le64 *bkey_refcount_c(struct bkey_s_c k)
  55 {
  56         switch (k.k->type) {
  57         case KEY_TYPE_reflink_v:
  58                 return &bkey_s_c_to_reflink_v(k).v->refcount;
  59         case KEY_TYPE_indirect_inline_data:
  60                 return &bkey_s_c_to_indirect_inline_data(k).v->refcount;
  61         default:
  62                 return NULL;
  63         }
  64 }
  65
  66 static inline __le64 *bkey_refcount(struct bkey_i *k)
  67 {
  68         switch (k->k.type) {
  69         case KEY_TYPE_reflink_v:
  70                 return &bkey_i_to_reflink_v(k)->v.refcount;
  71         case KEY_TYPE_indirect_inline_data:
  72                 return &bkey_i_to_indirect_inline_data(k)->v.refcount;
  73         default:
  74                 return NULL;
  75         }
  76 }
  77
  78 s64 bch2_remap_range(struct bch_fs *, subvol_inum, u64,
  79                      subvol_inum, u64, u64, u64, s64 *);
  80
  81 #endif /* _BCACHEFS_REFLINK_H */