centos man page for gethugepagesize

GETHUGEPAGESIZE(3)					     Library Functions Manual						GETHUGEPAGESIZE(3)

NAME
       gethugepagesize - Get the default huge page size

SYNOPSIS
       #include <hugetlbfs.h>

       long gethugepagesize(void)

DESCRIPTION
       The gethugepagesize() function returns the default huge page size used by libhugetlbfs.	This will be either the system default, or a valid
       value set by the environment variable HUGETLB_DEFAULT_PAGE_SIZE.

       If the system does not support any huge page sizes an error is returned.

RETURN VALUE
       On success, the default huge page size is returned.  On failure, -1 is returned and errno is set appropriately.

ERRORS
       ENOSYS The system does not support huge pages.

SEE ALSO
       libhugetlbfs(7)

AUTHORS
       libhugetlbfs was written by various people on the libhugetlbfs-devel mailing list.

								   March 7, 2012						GETHUGEPAGESIZE(3)