• Hugh Dickins's avatar
    ksm: identify PageKsm pages · 9a840895
    Hugh Dickins authored
    KSM will need to identify its kernel merged pages unambiguously, and
    /proc/kpageflags will probably like to do so too.
    Since KSM will only be substituting anonymous pages, statistics are best
    preserved by making a PageKsm page a special PageAnon page: one with no
    But KSM then needs its own page_add_ksm_rmap() - keep it in ksm.h near
    PageKsm; and do_wp_page() must COW them, unlike singly mapped PageAnons.
    Signed-off-by: default avatarHugh Dickins <hugh.dickins@tiscali.co.uk>
    Signed-off-by: default avatarChris Wright <chrisw@redhat.com>
    Signed-off-by: default avatarIzik Eidus <ieidus@redhat.com>
    Cc: Wu Fengguang <fengguang.wu@intel.com>
    Cc: Andrea Arcangeli <aarcange@redhat.com>
    Cc: Rik van Riel <riel@redhat.com>
    Cc: Wu Fengguang <fengguang.wu@intel.com>
    Cc: Balbir Singh <balbir@in.ibm.com>
    Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>
    Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
    Cc: Lee Schermerhorn <lee.schermerhorn@hp.com>
    Cc: Avi Kivity <avi@redhat.com>
    Cc: Nick Piggin <nickpiggin@yahoo.com.au>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
page.c 5.59 KB