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bcachefs: bkey_ops.min_val_size

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This adds a new field to bkey_ops for the minimum size of the value,
which standardizes that check and also enforces the new rule (previously
done somewhat ad-hoc) that we can extend value types by adding new
fields on to the end.

To make that work we do _not_ initialize min_val_size with sizeof,
instead we initialize it to the size of the first version of those
values.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet
2023-04-29 13:24:18 -04:00
parent ab158fce47
commit 174f930b8e
23 changed files with 37 additions and 115 deletions
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3
fs/bcachefs/reflink.h
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@ -14,6 +14,7 @@ bool bch2_reflink_p_merge(struct bch_fs *, struct bkey_s, struct bkey_s_c);
.key_merge = bch2_reflink_p_merge, \
.trans_trigger = bch2_trans_mark_reflink_p, \
.atomic_trigger = bch2_mark_reflink_p, \
.min_val_size = 16, \
})
int bch2_reflink_v_invalid(const struct bch_fs *, struct bkey_s_c,
@ -29,6 +30,7 @@ int bch2_trans_mark_reflink_v(struct btree_trans *, enum btree_id, unsigned,
.swab = bch2_ptr_swab, \
.trans_trigger = bch2_trans_mark_reflink_v, \
.atomic_trigger = bch2_mark_extent, \
.min_val_size = 8, \
})
int bch2_indirect_inline_data_invalid(const struct bch_fs *, struct bkey_s_c,
@ -44,6 +46,7 @@ int bch2_trans_mark_indirect_inline_data(struct btree_trans *,
.key_invalid = bch2_indirect_inline_data_invalid, \
.val_to_text = bch2_indirect_inline_data_to_text, \
.trans_trigger = bch2_trans_mark_indirect_inline_data, \
.min_val_size = 8, \
})
static inline const __le64 *bkey_refcount_c(struct bkey_s_c k)