FM / features

/sys/fs/ext4/features

Name	Size	Mode	Actions
batched_discard	4096	0444	edit dl rm
lazy_itable_init	4096	0444	edit dl rm
metadata_csum_seed	4096	0444	edit dl rm
meta_bg_resize	4096	0444	edit dl rm

Edit: /sys/fs/ext4/features/batched_discard (4096B)

cmd: