xref: /linux/fs/bcachefs/reflink.h (revision be239684b18e1cdcafcf8c7face4a2f562c745ad)
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(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 int bch2_trigger_reflink_p(struct btree_trans *, enum btree_id, unsigned,
13 			   struct bkey_s_c, struct bkey_s, unsigned);
14 
15 #define bch2_bkey_ops_reflink_p ((struct bkey_ops) {		\
16 	.key_invalid	= bch2_reflink_p_invalid,		\
17 	.val_to_text	= bch2_reflink_p_to_text,		\
18 	.key_merge	= bch2_reflink_p_merge,			\
19 	.trigger	= bch2_trigger_reflink_p,		\
20 	.min_val_size	= 16,					\
21 })
22 
23 int bch2_reflink_v_invalid(struct bch_fs *, struct bkey_s_c,
24 			   enum bkey_invalid_flags, struct printbuf *);
25 void bch2_reflink_v_to_text(struct printbuf *, struct bch_fs *,
26 			    struct bkey_s_c);
27 int bch2_trigger_reflink_v(struct btree_trans *, enum btree_id, unsigned,
28 			      struct bkey_s_c, struct bkey_s, unsigned);
29 
30 #define bch2_bkey_ops_reflink_v ((struct bkey_ops) {		\
31 	.key_invalid	= bch2_reflink_v_invalid,		\
32 	.val_to_text	= bch2_reflink_v_to_text,		\
33 	.swab		= bch2_ptr_swab,			\
34 	.trigger	= bch2_trigger_reflink_v,		\
35 	.min_val_size	= 8,					\
36 })
37 
38 int bch2_indirect_inline_data_invalid(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_trigger_indirect_inline_data(struct btree_trans *,
43 					 enum btree_id, unsigned,
44 			      struct bkey_s_c, struct bkey_s,
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 	.trigger	= bch2_trigger_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_s k)
67 {
68 	switch (k.k->type) {
69 	case KEY_TYPE_reflink_v:
70 		return &bkey_s_to_reflink_v(k).v->refcount;
71 	case KEY_TYPE_indirect_inline_data:
72 		return &bkey_s_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 */
82