github.com/afumu/libc@v0.0.6/musl/src/mman/posix_madvise.c (about)

     1  #define _GNU_SOURCE
     2  #include <sys/mman.h>
     3  #include "syscall.h"
     4  
     5  int posix_madvise(void *addr, size_t len, int advice)
     6  {
     7  	if (advice == MADV_DONTNEED) return 0;
     8  	return -__syscall(SYS_madvise, addr, len, advice);
     9  }