bcachefs: Clamp replicas_required to replicas

This prevents going emergency read only when the user has specified
replicas_required > replicas.

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

1 files changed, 12 insertions, 0 deletions

diff --git a/fs/bcachefs/bcachefs.h b/fs/bcachefs/bcachefs.h
index b80c6c9efd8c..69d0d60d50e3 100644
--- a/fs/bcachefs/bcachefs.h
+++ b/fs/bcachefs/bcachefs.h
@@ -1249,6 +1249,18 @@ static inline struct stdio_redirect *bch2_fs_stdio_redirect(struct bch_fs *c)
 	return stdio;
 }
 
+static inline unsigned metadata_replicas_required(struct bch_fs *c)
+{
+	return min(c->opts.metadata_replicas,
+		   c->opts.metadata_replicas_required);
+}
+
+static inline unsigned data_replicas_required(struct bch_fs *c)
+{
+	return min(c->opts.data_replicas,
+		   c->opts.data_replicas_required);
+}
+
 #define BKEY_PADDED_ONSTACK(key, pad)				\
 	struct { struct bkey_i key; __u64 key ## _pad[pad]; }