vm_page_flash man page on FreeBSD

vm_page_flash man page on FreeBSD

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VM_PAGE_BUSY(9)		 BSD Kernel Developer's Manual	       VM_PAGE_BUSY(9)

NAME
     vm_page_busy, vm_page_flash, vm_page_wakeup — handle the busying and
     unbusying of a page

SYNOPSIS
     #include <sys/param.h>
     #include <vm/vm.h>
     #include <vm/vm_page.h>

     void
     vm_page_busy(vm_page_t m);

     void
     vm_page_flash(vm_page_t m);

     void
     vm_page_wakeup(vm_page_t m);

DESCRIPTION
     These functions handle the busying, unbusying and notification of the
     unbusying of a page.

     vm_page_busy() sets the VPO_BUSY flag in the page.

     vm_page_flash() checks to see if there is anybody waiting on the page
     (VPO_WANTED will be set), and if so, clears the VPO_WANTED flag and noti‐
     fies whoever is waiting via wakeup().

     vm_page_wakeup() clears the VPO_BUSY flag on the page, and calls
     vm_page_flash() in case somebody has been waiting for it.

SEE ALSO
     vm_page_sleep_if_busy(9), wakeup(9)

AUTHORS
     This manual page was written by Chad David ⟨davidc@acns.ab.ca⟩.

BSD				 July 14, 2001				   BSD

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