Hi all,

I am writing a new filesystem driver for the filesystem used by the
Rio Karma (and, as it happens, ReplayTV).  See the attached patch and
my webpage here for more info: http://bobcopeland.com/karma/.  I have
a
couple of newbie questions:

1) The directory structure implements a hash table where each
directory has a fixed number of entries.  Each entry is a file that
has a pointer to another file in the hash chain and so there can be an
unlimited number of files in any hash chain.  What is the usual way to
implement readdir efficiently in this case?  With f_pos alone, I don't
have any idea which node I want along the hash chain without counting
up f_pos nodes in the tree.

2) Also, does there happen to be a way to use sb_bread to operate on
more than 4k at a time?  OMFS uses 8k blocks and a lot of the
complexity in my driver involves operating on 512-byte blocks, loading
new sectors when I hit a sector boundary, etc; reading 8k at a time
would clean things up a little.