Путеводитель по Руководству Linux
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   madvise    ( 2 )

дать совет по использованию памяти (give advice about use of memory)
  Name  |  Synopsis  |  Description  |  Return value  |  Error  |  Versions  |    Conforming to    |  Note  |  See also  |

Стандарты (Conforming to)

madvise() is not specified by any standards. Versions of this system call, implementing a wide variety of advice values, exist on many other implementations. Other implementations typically implement at least the flags listed above under Conventional advice flags, albeit with some variation in semantics.

POSIX.1-2001 describes posix_madvise(3) with constants POSIX_MADV_NORMAL, POSIX_MADV_RANDOM, POSIX_MADV_SEQUENTIAL, POSIX_MADV_WILLNEED, and POSIX_MADV_DONTNEED, and so on, with behavior close to the similarly named flags listed above.