[PATCH] nfsd4: remove utf8 checking

RFC3530 says NFSv4 filenames are in UTF-8, and that servers "should" reject
filenames that aren't valid UTF-8.  Currently we do some incomplete UTF-8
checking, but this turns out to be more of a hindrance than a help--if we
export a filesystem with non-UTF8 names, things break.  We might be able to
help things if we had some idea of the exported filesystem's charset and could
do some translation.  For now, though, the simplest solution by far seems to
be just to remove the UTF-8 checks, making NFSv4's behaviour just like
NFSv2/v3's.

Similar problems exist with usernames.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

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