e2fsck: improve the inline directory detector

Strengthen the checks that guess if the inode we're looking at is an
inline directory.  The current check sweeps up any inline inode if
its length is a multiple of four; now we'll at least try to see if
there's the beginning of a valid directory entry.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
7 files changed