diff options
| author | Kent Overstreet <kent.overstreet@linux.dev> | 2023-06-27 18:01:09 -0400 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2023-10-22 17:10:05 -0400 |
| commit | 4e1430a728499ce8088e1bdd0dd6467ce3447ca0 (patch) | |
| tree | cfb6f3a72d2e1b904553d9c4766b190197587515 /fs/bcachefs | |
| parent | e4eb661d3a5764273cb854d7c441819943692971 (diff) | |
bcachefs: Expand BTREE_NODE_ID
We now have 20 bits for the btree ID in the on disk format - sufficient
for 1 million distinct btrees.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'fs/bcachefs')
| -rw-r--r-- | fs/bcachefs/bcachefs_format.h | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/fs/bcachefs/bcachefs_format.h b/fs/bcachefs/bcachefs_format.h index ad87cdff8544..a73f1de8e872 100644 --- a/fs/bcachefs/bcachefs_format.h +++ b/fs/bcachefs/bcachefs_format.h @@ -2195,13 +2195,25 @@ struct btree_node { }; } __packed __aligned(8); -LE64_BITMASK(BTREE_NODE_ID, struct btree_node, flags, 0, 4); +LE64_BITMASK(BTREE_NODE_ID_LO, struct btree_node, flags, 0, 4); LE64_BITMASK(BTREE_NODE_LEVEL, struct btree_node, flags, 4, 8); LE64_BITMASK(BTREE_NODE_NEW_EXTENT_OVERWRITE, struct btree_node, flags, 8, 9); -/* 9-32 unused */ +LE64_BITMASK(BTREE_NODE_ID_HI, struct btree_node, flags, 9, 25); +/* 25-32 unused */ LE64_BITMASK(BTREE_NODE_SEQ, struct btree_node, flags, 32, 64); +static inline __u64 BTREE_NODE_ID(struct btree_node *n) +{ + return BTREE_NODE_ID_LO(n) | (BTREE_NODE_ID_HI(n) << 4); +} + +static inline void SET_BTREE_NODE_ID(struct btree_node *n, u64 v) +{ + SET_BTREE_NODE_ID_LO(n, v); + SET_BTREE_NODE_ID_HI(n, v >> 4); +} + struct btree_node_entry { struct bch_csum csum; @@ -2211,7 +2223,6 @@ struct btree_node_entry { __u8 pad[22]; __le16 u64s; __u64 _data[0]; - }; }; } __packed __aligned(8); |