mm: balloon: use general non-lru movable page feature
authorMinchan Kim <minchan@kernel.org>
Tue, 26 Jul 2016 22:23:09 +0000 (15:23 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 26 Jul 2016 23:19:19 +0000 (16:19 -0700)
commitb1123ea6d3b3da25af5c8a9d843bd07ab63213f4
treea46ec204cbeb92fc168b92b870a1489081726388
parentbda807d4445414e8e77da704f116bb0880fe0c76
mm: balloon: use general non-lru movable page feature

Now, VM has a feature to migrate non-lru movable pages so balloon
doesn't need custom migration hooks in migrate.c and compaction.c.

Instead, this patch implements the page->mapping->a_ops->
{isolate|migrate|putback} functions.

With that, we could remove hooks for ballooning in general migration
functions and make balloon compaction simple.

[akpm@linux-foundation.org: compaction.h requires that the includer first include node.h]
Link: http://lkml.kernel.org/r/1464736881-24886-4-git-send-email-minchan@kernel.org
Signed-off-by: Gioh Kim <gi-oh.kim@profitbricks.com>
Signed-off-by: Minchan Kim <minchan@kernel.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Rafael Aquini <aquini@redhat.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/virtio/virtio_balloon.c
include/linux/balloon_compaction.h
include/uapi/linux/magic.h
mm/balloon_compaction.c
mm/compaction.c
mm/migrate.c
mm/vmscan.c