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-rw-r--r--fs/bcachefs/btree_update.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/bcachefs/btree_update.c b/fs/bcachefs/btree_update.c
index 192c1e5e3ed9..5d5394db3965 100644
--- a/fs/bcachefs/btree_update.c
+++ b/fs/bcachefs/btree_update.c
@@ -566,7 +566,7 @@ void *__bch2_trans_subbuf_alloc(struct btree_trans *trans,
if (buf->u64s)
memcpy(n,
btree_trans_subbuf_base(trans, buf),
- buf->size * sizeof(u64));
+ buf->u64s * sizeof(u64));
buf->base = (u64 *) n - (u64 *) trans->mem;
buf->size = new_size;