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-rw-r--r--fs/bcachefs/bcachefs_format.h6
-rw-r--r--fs/bcachefs/recovery.c3
2 files changed, 9 insertions, 0 deletions
diff --git a/fs/bcachefs/bcachefs_format.h b/fs/bcachefs/bcachefs_format.h
index 1bebba881d89..d801e19cb489 100644
--- a/fs/bcachefs/bcachefs_format.h
+++ b/fs/bcachefs/bcachefs_format.h
@@ -1555,6 +1555,12 @@ enum btree_id {
BTREE_ID_NR
};
+/*
+ * Maximum number of btrees that we will _ever_ have under the current scheme,
+ * where we refer to them with bitfields
+ */
+#define BTREE_ID_NR_MAX 64
+
static inline bool btree_id_is_alloc(enum btree_id id)
{
switch (id) {
diff --git a/fs/bcachefs/recovery.c b/fs/bcachefs/recovery.c
index 1266916ac03f..63f990f5c63a 100644
--- a/fs/bcachefs/recovery.c
+++ b/fs/bcachefs/recovery.c
@@ -35,6 +35,9 @@
void bch2_btree_lost_data(struct bch_fs *c, enum btree_id btree)
{
+ if (btree >= BTREE_ID_NR_MAX)
+ return;
+
u64 b = BIT_ULL(btree);
if (!(c->sb.btrees_lost_data & b)) {