Messages in this thread | | | From | Systemkennung Linux <> | Subject | Re: do_mmap() | Date | Mon, 18 Nov 1996 15:01:15 +0100 (MET) |
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> If the vm area is LOCKED in core e.g. for realtime purposes, it will touch > any of the pages by reading a byte from them. > IMHO, this is not strictly true, it should touch the pages by _writing_ , > as this makes a difference on zero pages: > imagine a realtime process that has malloced a large chunk (with a mmap > based malloc), mlocks it, and then uses it - if memory is tight, it will > nevertheless cause swapping activity, which is what it wanted to prevent > by mlocking it.
Writing isn't correct either in case of read-only pages. Solution is obvious.
Ralf
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