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
Since exp_parent can fail by returning an error (-EAGAIN) in addition to by returning NULL, we should check for that case in exp_rootfh. (TODO: we should check that userland handles these errors too.) Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>