bcachefs: Fix BTREE_FOREGROUND_MERGE_HYSTERESIS

We were multiplying instead of dividing - oops.

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

diff --git a/fs/bcachefs/btree_cache.h b/fs/bcachefs/btree_cache.h
index aa8fe4a1b04b9d06d017db61be239631054384c0..4791c3b64452d915486a2a5754210fcc1098f0ab 100644 (file)
--- a/fs/bcachefs/btree_cache.h
+++ b/fs/bcachefs/btree_cache.h
@@ -89,7 +89,7 @@ static inline unsigned btree_blocks(struct bch_fs *c)
 #define BTREE_FOREGROUND_MERGE_THRESHOLD(c)    (btree_max_u64s(c) * 1 / 3)
 #define BTREE_FOREGROUND_MERGE_HYSTERESIS(c)                   \
        (BTREE_FOREGROUND_MERGE_THRESHOLD(c) +                  \
-        (BTREE_FOREGROUND_MERGE_THRESHOLD(c) << 2))
+        (BTREE_FOREGROUND_MERGE_THRESHOLD(c) >> 2))
 
 #define btree_node_root(_c, _b)        ((_c)->btree_roots[(_b)->c.btree_id].b)