Scratch the fasync idea: fasync things will be correctly cleaned up at the
last fput() anyway. Similarly the ioctl's are protected already in 2.1.x
(not in 2.0.x if I remember correctly). As are all the normal socket
operations (sendmsg, listen etc etc).
So I'll just have to again ask for kernel dumps when the problem happens,
because I can't currently think of anything that would leak file
information across a close any more.. Maybe there is another type of
thread-related problem somewhere.
Linus
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