NAME

     vm_page_sleep_if_busy — wait for a busy page to become unbusy

SYNOPSIS

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

     int
     vm_page_sleep_if_busy(vm_page_t m, int also_m_busy, const char *wmesg);

DESCRIPTION

     The vm_page_sleep_if_busy() function waits until the VPO_BUSY flag is cleared.  If
     also_m_busy is non-zero, it also waits for m->busy to become zero.

RETURN VALUES

     If vm_page_sleep_if_busy() finds the page busy it returns TRUE.  If not, it returns FALSE.
     Returning TRUE does not necessary mean that vm_page_sleep_if_busy() slept, but only that
     splvm() was called.

AUTHORS

     This manual page was written by Chad David <davidc@acns.ab.ca>.