btrfs: sysfs: check initialization state before updating features

If the mount phase is not finished, we can't update the sysfs files. Reported-by: Chris Mason <[email protected]> Signed-off-by: David Sterba <[email protected]> Signed-off-by: Chris Mason <[email protected]>
patjak · Jan 27, 2016 · bf60920 · bf60920
1 parent 80ad623
commit bf60920
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
@@ -804,6 +804,9 @@ void btrfs_sysfs_feature_update(struct btrfs_fs_info *fs_info,
 	fs_devs = fs_info->fs_devices;
 	fsid_kobj = &fs_devs->fsid_kobj;
 
+	if (!fsid_kobj->state_initialized)
+		return;
+
 	/*
 	 * FIXME: this is too heavy to update just one value, ideally we'd like
 	 * to use sysfs_update_group but some refactoring is needed first.