Messages in this thread | | | Date | Mon, 25 Sep 2017 14:36:21 +0200 | From | Michal Hocko <> | Subject | Re: [patch v2] mremap.2: Add description of old_size == 0 functionality |
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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. -- Michal Hocko SUSE Labs
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