дать совет по использованию памяти (give advice about use of memory)
Ошибки (Error)
EACCES advice is MADV_REMOVE, but the specified address range is
not a shared writable mapping.
EAGAIN A kernel resource was temporarily unavailable.
EBADF The map exists, but the area maps something that isn't a
file.
EINVAL addr is not page-aligned or length is negative.
EINVAL advice is not a valid.
EINVAL advice is MADV_DONTNEED or MADV_REMOVE and the specified
address range includes locked, Huge TLB pages, or
VM_PFNMAP pages.
EINVAL advice is MADV_MERGEABLE or MADV_UNMERGEABLE, but the
kernel was not configured with CONFIG_KSM.
EINVAL advice is MADV_FREE or MADV_WIPEONFORK but the specified
address range includes file, Huge TLB, MAP_SHARED, or
VM_PFNMAP ranges.
EIO (for MADV_WILLNEED) Paging in this area would exceed the
process's maximum resident set size.
ENOMEM (for MADV_WILLNEED) Not enough memory: paging in failed.
ENOMEM Addresses in the specified range are not currently mapped,
or are outside the address space of the process.
EPERM advice is MADV_HWPOISON, but the caller does not have the
CAP_SYS_ADMIN capability.
