K 10
svn:author
V 7
attilio
K 8
svn:date
V 27
2013-07-20T08:38:34.216133Z
K 7
svn:log
V 522
Rework vm_page_sleep_if_busy() and vm_page_grab() to be possibly
called with the object lock in read-mode.
With the object lock held in read-mode the busy operation must be
time-invariant, which means VM_ALLOC_NOBUSY cannot be really passed.
Also, in the vm_page_sleep_if_busy() the VM_ALLOC_* flags don't make
much sense, maybe these 2 interfaces should grow their own set of
flags (and vm_page_grab() internally can play with VM_ALLOC_* flags
as appropriate).

Sponsored by:	EMC / Isilon storage division
Tested by:	pho

END