quoted

But be aware that pagefaulting inside kmap_atomic is bad - you can get
blocked and rescheduled, so touching user pages, etc is dangerous.

That's true in 2.4.  In 2.5 a copy_foo_user() inside kmap_atomic()
will just return a short copy while remaining atomic.

See mm/filemap.c:filemap_copy_from_user()

Cool - I didn't realise you fixed that up so generically - very nice.

M.

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