Function rustix::io::madvise
pub unsafe fn madvise(addr: *mut c_void, len: usize, advice: Advice) -> io::Result<()>Documentation
posix_madvise(addr, len, advice)—Declares an expected access pattern
for a memory-mapped file.
Safety
addr must be a valid pointer to memory that is appropriate to
call posix_madvise on. Some forms of advice may mutate the memory
or evoke a variety of side-effects on the mapping and/or the file.