On Mon, Jul 23, 2012 at 11:33:32AM +0900, Minchan Kim wrote:
Look at memory-hotplug, offline_page calls has_unmovable_pages, scan_lru_pages
and do_migrate_range which calls isolate_lru_page. They consider only LRU
pages
to migratable ones.
As promised, I looked into those bits. Yes, they
On 07/22/2012 10:33 PM, Minchan Kim wrote:
IMHO, better approach is that after we can get complete free pageblocks
by compaction or reclaim, move balloon pages into that pageblocks and make
that blocks to unmovable. It can prevent fragmentation and it makes
current or future code don't need to
On 07/23/2012 02:19 PM, Rafael Aquini wrote:
In a glance, I believe this whole dance you're suggesting might just be too much
of an overcomplication, and the best approach would be simply teaching the
hotplug bits about the ballooned corner case just like it's being done to
On Mon, Jul 23, 2012 at 11:33:32AM +0900, Minchan Kim wrote:
Hi Rafael,
On Fri, Jul 20, 2012 at 04:48:59PM -0300, Rafael Aquini wrote:
Howdy Minchan,
Once again, thanks for raising such valuable feedback over here.
On Wed, Jul 18, 2012 at 02:48:24PM +0900, Minchan Kim wrote:
On Mon, Jul 23, 2012 at 11:33:32AM +0900, Minchan Kim wrote:
Hi Rafael,
On Fri, Jul 20, 2012 at 04:48:59PM -0300, Rafael Aquini wrote:
Howdy Minchan,
Once again, thanks for raising such valuable feedback over here.
On Wed, Jul 18, 2012 at 02:48:24PM +0900, Minchan Kim wrote:
Howdy Minchan,
Once again, thanks for raising such valuable feedback over here.
On Wed, Jul 18, 2012 at 02:48:24PM +0900, Minchan Kim wrote:
+/* __isolate_lru_page() counterpart for a ballooned page */
+static bool isolate_balloon_page(struct page *page)
+{
+ if
Hi Rafael,
On Tue, Jul 17, 2012 at 01:50:41PM -0300, Rafael Aquini wrote:
This patch introduces the helper functions as well as the necessary changes
to teach compaction and migration bits how to cope with pages which are
part of a guest memory balloon, in order to make them movable by memory
On Tue, 17 Jul 2012 13:50:41 -0300
Rafael Aquini aqu...@redhat.com wrote:
This patch introduces the helper functions as well as the necessary changes
to teach compaction and migration bits how to cope with pages which are
part of a guest memory balloon, in order to make them movable by memory
Howdy Andrew,
Thanks for taking the time to go through this work and provide me with such good
feedback.
On Wed, Jul 18, 2012 at 03:46:05PM -0700, Andrew Morton wrote:
On Tue, 17 Jul 2012 13:50:41 -0300
Rafael Aquini aqu...@redhat.com wrote:
This patch introduces the helper functions as
On Wed, 18 Jul 2012 20:07:07 -0300
Rafael Aquini aqu...@redhat.com wrote:
+}
+#else
+static inline bool is_balloon_page(struct page *page) { return
false; }
+static inline bool isolate_balloon_page(struct page *page) { return
false; }
+static inline bool
On Wed, Jul 18, 2012 at 04:12:39PM -0700, Andrew Morton wrote:
On Wed, 18 Jul 2012 20:07:07 -0300
Rafael Aquini aqu...@redhat.com wrote:
+}
+#else
+static inline bool is_balloon_page(struct page *page) { return
false; }
+static inline bool
On Wed, 18 Jul 2012 22:00:48 -0300 Rafael Aquini aqu...@redhat.com wrote:
So the function needs a better name - one which communicates that it is
a balloon page *for the purposes of processing by the compaction code*.
Making the function private to compaction.c would help with that, if
This patch introduces the helper functions as well as the necessary changes
to teach compaction and migration bits how to cope with pages which are
part of a guest memory balloon, in order to make them movable by memory
compaction procedures.
Signed-off-by: Rafael Aquini aqu...@redhat.com
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