vm_page_sleep_busy(9)
wait for a busy page to become unbusy
SYNOPSIS
In sys/param.h
In vm/vm.h
In vm/vm_page.h
Ft int
Fn vm_page_sleep_busy vm_page_t m int also_m_busy const char *wmesg
DESCRIPTION
The
Fn vm_page_sleep_busy
function waits until the
PG_BUSY
flag is cleared.
If
Fa also_m_busy
is non-zero, it also waits for
Fa m->busy
to become zero.
RETURN VALUES
If
Fn vm_page_sleep_busy
finds the page busy it returns
TRUE
If not, it returns
FALSE
Returning
TRUE
does not necessary mean that
Fn vm_page_sleep_busy
slept, but only that
Fn splvm
was called.
