madvise man page on 4.4BSD

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MADVISE(2)		    BSD System Calls Manual		    MADVISE(2)

NAME
     madvise — give advise about use of memory

SYNOPSIS
     madvise(caddr_t addr, int len, int behav);

DESCRIPTION
     The madvise() system call allows a process that has knowledge of its mem‐
     ory behavior to describe it to the system.	 The known behaviors are given
     in <sys/mman.h>:

     #define MADV_NORMAL     0	     /* no further special treatment */
     #define MADV_RANDOM     1	     /* expect random page references */
     #define MADV_SEQUENTIAL 2	     /* expect sequential references */
     #define MADV_WILLNEED   3	     /* will need these pages */
     #define MADV_DONTNEED   4	     /* don't need these pages */
     #define MADV_SPACEAVAIL 5	     /* insure that resources are reserved */

SEE ALSO
     msync(2), munmap(2), mprotect(2), mincore(2)

HISTORY
     The madvise function first appeared in 4.4BSD.

BSD				 June 9, 1993				   BSD
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