e2fsck: Fix directory i_size handling

If a directory's i_size is bigger than the number of blocks, don't try
to allocate extra empty blocks to the end of the directory; there's no
real point to do that.  Also, if a directory's i_size is not a
multiple of the blocksize, flag that as a mistake so it can be fixed.

This more elegantly addresses the problem which was found on Bas van
Schaik's filesystem.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
3 files changed