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Re: Aw: Re: Aw: Re: Setting mtime doesn't work after copying a file with mmap
On Wed, 9 Dec 2015, Carsten Kunze wrote:
> christos%astron.com@localhost (Christos Zoulas) wrote:
> > How often should it be updated?
> Only once on munmap? If it is updated at an unpredictable time it makes something like utime(2) senseless (since it is changed anyway). Always use msync is a performance issue for e.g. "cp -p ..." (so I think cp(1) doesn't use mmap for copying).
Is the file descriptor still open at the time of the munmap?
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