bcachefs: Fix bch2_mark_extent()

If an extent only contained cached or erasure coded pointers, there
won't be any devices in the normal dirty replicas list or an entry to
update.

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

diff --git a/fs/bcachefs/buckets.c b/fs/bcachefs/buckets.c
index 5e0e699c679adace6bcadf49dad996d0a427d016..9beb4d4cf85da6f9f62bb32244721b440da509de 100644 (file)
--- a/fs/bcachefs/buckets.c
+++ b/fs/bcachefs/buckets.c
@@ -1063,7 +1063,8 @@ static int bch2_mark_extent(struct bch_fs *c, struct bkey_s_c k,
                }
        }
 
-       update_replicas(c, fs_usage, &r.e, dirty_sectors);
+       if (r.e.nr_devs)
+               update_replicas(c, fs_usage, &r.e, dirty_sectors);
 
        return 0;
 }