vm_page: move tailq validation to grab_pagesHEADmain

Function vm_page_acquire_unlocked both looks up pages and validates
them.  Much of it serves the needs of only one caller,
vm_page_grab_pages_unlocked, by checking the validity of checking
tailq links. Extract from that function the parts that serve only
vm_page_grab_pages_unlocked, and move them into that function.

Reviewed by:	kib
Differential Revision:	https://reviews.freebsd.org/D47001

0 files changed, 0 insertions, 0 deletions