Messages in this thread | | | From | "Michael Kerrisk (man-pages)" <> | Date | Mon, 25 Sep 2017 14:40:59 +0200 | Subject | Re: [patch v2] mremap.2: Add description of old_size == 0 functionality |
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On 25 September 2017 at 14:36, Michal Hocko <mhocko@kernel.org> wrote: > On Wed 20-09-17 09:25:42, Michael Kerrisk wrote: > [...] >> BUGS >> Before Linux 4.14, if old_size was zero and the mapping referred >> to by old_address was a private mapping (mmap(2) MAP_PRIVATE), >> mremap() created a new private mapping unrelated to the original >> mapping. This behavior was unintended and probably unexpected in >> user-space applications (since the intention of mremap() is to >> create a new mapping based on the original mapping). Since Linux >> 4.14, mremap() fails with the error EINVAL in this scenario. >> >> Does that seem okay? > > sorry to be late but yes this wording makes perfect sense to me.
Thanks, Michal.
Cheers,
Michael
-- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/
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