bcachefs: Allocator prefers not to expand mi.btree_allocated bitmap
We now have a small bitmap in the member info section of the superblock
for "regions that have btree nodes", so that if we ever have to scan for
btree nodes in repair we don't have to scan the whole device(s).
This tweaks the allocator to prefer allocating from regions that are
already marked in this bitmap.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
diff --git a/fs/bcachefs/bcachefs.h b/fs/bcachefs/bcachefs.h
index ab415f0..ab2dc2c 100644
--- a/fs/bcachefs/bcachefs.h
+++ b/fs/bcachefs/bcachefs.h
@@ -587,7 +587,7 @@ struct bch_dev {
/* Allocator: */
u64 new_fs_bucket_idx;
- u64 alloc_cursor;
+ u64 alloc_cursor[3];
unsigned nr_open_buckets;
unsigned nr_btree_reserve;
