On Wed, 9 Dec 2015, Carsten Kunze wrote: > [email protected] (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
