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| author | Kent Overstreet <kent.overstreet@linux.dev> | 2023-04-29 20:24:18 +0300 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2023-10-23 00:10:00 +0300 |
| commit | 174f930b8e1cad3915819a46bb20da214f68f2b5 (patch) | |
| tree | 413eb321e97d3184f68716c8df8a4eef9c1e5b44 /fs/bcachefs/subvolume.h | |
| parent | ab158fce47220df20f0fe2360767227328f6765b (diff) | |
| download | linux-174f930b8e1cad3915819a46bb20da214f68f2b5.tar.xz | |
bcachefs: bkey_ops.min_val_size
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>
Diffstat (limited to 'fs/bcachefs/subvolume.h')
| -rw-r--r-- | fs/bcachefs/subvolume.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/bcachefs/subvolume.h b/fs/bcachefs/subvolume.h index df6657952e2f..1f6f7862e48f 100644 --- a/fs/bcachefs/subvolume.h +++ b/fs/bcachefs/subvolume.h @@ -15,6 +15,7 @@ int bch2_mark_snapshot(struct btree_trans *, enum btree_id, unsigned, .key_invalid = bch2_snapshot_invalid, \ .val_to_text = bch2_snapshot_to_text, \ .atomic_trigger = bch2_mark_snapshot, \ + .min_val_size = 24, \ }) static inline struct snapshot_t *snapshot_t(struct bch_fs *c, u32 id) @@ -119,6 +120,7 @@ void bch2_subvolume_to_text(struct printbuf *, struct bch_fs *, struct bkey_s_c) #define bch2_bkey_ops_subvolume ((struct bkey_ops) { \ .key_invalid = bch2_subvolume_invalid, \ .val_to_text = bch2_subvolume_to_text, \ + .min_val_size = 16, \ }) int bch2_subvolume_get(struct btree_trans *, unsigned, |