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pmap_is_modified (9)
  • >> pmap_is_modified (9) ( FreeBSD man: Ядро )

  • BSD mandoc
     

    NAME

    
    
    pmap_is_modified
    
     
    pmap_ts_modified
    
     - return information about physical pages
    
     
    

    SYNOPSIS

       #include <sys/param.h>
       #include <vm/vm.h>
       #include <vm/pmap.h>
    boolean_t pmap_is_modified (vm_page_t m);
    int pmap_ts_referenced (vm_page_t m);
     

    DESCRIPTION

    The pmap_is_modified ();
    and pmap_ts_referenced ();
    functions return information about physical pages.  

    RETURN VALUES

    The pmap_is_modified ();
    function returns the status of the ``page modified'' bit for the physical page Fa m .

    The pmap_ts_referenced ();
    function returns a count of reference bits for a page Fa m , clearing those bits. It is not necessary for every reference bit to be cleared, but it is necessary that 0 only be returned when there are no remaining reference bits set on the page.  

    SEE ALSO

    pmap(9), pmap_clear_modify9, pmap_clear_reference9  

    AUTHORS

    This manual page was written by An Bruce M Simpson Aq bms@spc.org .


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    SEE ALSO
    AUTHORS


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