NAND FLASH 4KB page support

[sasin at solomon-systech.com]

Sorry to resend (reply bounces) - Forgot to add, I'm using linux
2.6.20.1 for ARM926.

Trying to boot off CRAMFS on a 4KB page NAND FLASH (new device), I ran
into the "wrong magic" issue.  MTD's nand_read
(drivers/mtd/nand/nand_base.c) is returning the right data.
Cramfs_fill_supper call cramfs_read (fs/cramfs/inode.c) which reads 4
pages and the 1st page of data gets corrupted.  If I set
BLKS_PER_BUF_SHIFT in this file to 0 or 1 instead of 2, so that only 1
or 2 pages are read, the data is uncorrupted and the magic value matches
but it crashes later (comments say that this values should be 2 or
higher, so this is not surprising).  So is 4KB page size supported by
the rest of Linux outside MTD?  Is there some size limit in some inode
related structure?