Re: Aw: Re: Aw: Re: Setting mtime doesn't work after copying a file with mmap

[Eduardo Horvath <eeh%NetBSD.org@localhost>]

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?

Eduardo