data journalling (j), secure deletion (s), no tail-merging (t),
undeletable (u), no atime updates (A), synchronous directory updates (D),
synchronous updates (S), and top of directory hierarchy (T).
data journalling (j), secure deletion (s), no tail-merging (t),
undeletable (u), no atime updates (A), synchronous directory updates (D),
synchronous updates (S), and top of directory hierarchy (T).