Messages in this thread |  | | | Date | Mon, 18 May 2009 11:03:59 +0100 | | From | Alan Cox <> | | Subject | Re: [PATCH 2/2] Perform check in iov_iter_fault_in_readable() by check_readable_bytes() |
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> On MMUless you wouldn't use page protection as a GC technique :-) > Is EFAULT really optional on systems with page protection?
Yes.
It's also not guaranteed under Linux although pretty much all our I/O paths do bother to report -EFAULT
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