c066055957
Before this change a copy operation with cp(1) would not update the file access times. According to the POSIX mmap(2) documentation: the st_atime field of the mapped file may be marked for update at any time between the mmap() call and the corresponding munmap() call. The initial read or write reference to a mapped region shall cause the file's st_atime field to be marked for update if it has not already been marked for update.