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

  • BSD mandoc
     

    NAME

    
    
    vm_page_io_start
    
     
    vm_page_io_finish
    
     - ready or unready a page for I/O
    
     
    

    SYNOPSIS

       #include <sys/param.h>
       #include <vm/vm.h>
       #include <vm/vm_page.h>
    void vm_page_io_start (vm_page_t m);
    void vm_page_io_finish (vm_page_t m);
     

    DESCRIPTION

    The vm_page_io_start ();
    function prepares the page for I/O by incrementing its busy flag by one.

    The vm_page_io_finish ();
    function lowers the busy count on the page by one, if the resulting busy count is zero, a wakeup(9) will be issued if the page has been marked PG_WANTED A page is typically marked PG_WANTED by a thread to register its interest in the page to either complete I/O or becoming available for general use.  

    AUTHORS

    An -nosplit This manual page was written by An Chad David Aq [email protected] and An Alfred Perlstein Aq [email protected] .


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    AUTHORS


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