bcachefs: KEY_TYPE_alloc_v4

This introduces a new alloc key which doesn't use varints. Soon we'll be
adding backpointers and storing them in alloc keys, which means our
pack/unpack workflow for alloc keys won't really work - we'll need to be
mutating alloc keys in place.

Instead of bch2_alloc_unpack(), we now have bch2_alloc_to_v4() that
converts older types of alloc keys to v4 if needed.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/bcachefs/buckets_types.h b/fs/bcachefs/buckets_types.h
index 2c73dc60b838..4f7018398385 100644
--- a/fs/bcachefs/buckets_types.h
+++ b/fs/bcachefs/buckets_types.h
@@ -111,7 +111,7 @@ struct copygc_heap_entry {
 	u8			dev;
 	u8			gen;
 	u8			replicas;
-	u16			fragmentation;
+	u32			fragmentation;
 	u32			sectors;
 	u64			offset;
 };