On Wed, 29 Aug 2007, Mingming Cao wrote:

It's quite simple to support large block size in ext2/3/4, mostly just
enlarge the block size limit.  But it is NOT possible to have 64kB
blocksize on ext2/3/4 without some changes to the directory handling
code.  The reason is that an empty 64kB directory block would have a
rec_len == (__u16)2^16 == 0, and this would cause an error to be hit in
the filesystem.  The proposed solution is to put 2 empty records in such
a directory, or to special-case an impossible value like rec_len =
0xffff to handle this. 

Ahh. Good.

I could add the path to the large blocksize patchset?