On Tue, Mar 09, 2021 at 04:53:48PM +0100, Christoph Hellwig wrote:
> Just use the generic anon_inode file system.
>
> Signed-off-by: Christoph Hellwig
Acked-by: Minchan Kim
___
Virtualization mailing list
Virtualization@lists.linux-found
On Tue, Mar 09, 2021 at 04:53:40PM +0100, Christoph Hellwig wrote:
> Rename alloc_inode to free the name for a new variant that does not
> need boilerplate to create a super_block first.
>
> Signed-off-by: Christoph Hellwig
> ---
> arch/powerpc/platforms/pseries/cmm.c | 2 +-
> drivers/dma-buf/d
On Fri, Oct 16, 2020 at 05:38:26PM +0200, Vlastimil Babka wrote:
> On 10/13/20 10:09 AM, Mike Rapoport wrote:
> > > We are not complaining about TCP using too much memory, but how do
> > > we know that TCP uses a lot of memory. When I firstly face this problem,
> > > I do not know who uses the 25GB
uot;mm: balloon: use general non-lru movable page feature")
> Signed-off-by: Yisheng Xie
Thanks for the fixing!
Acked-by: Minchan Kim
___
Virtualization mailing list
Virtualization@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/virtualization
On Thu, Jun 30, 2016 at 11:26:45AM +0530, Anshuman Khandual wrote:
> >> Did you get a chance to test the driver out ? I am still concerned about
> >> how to
> >> handle the struct address_space override problem within the struct page.
> >
> > Hi Anshuman,
> >
> > Slow but I am working on that
On Mon, Jun 27, 2016 at 11:21:01AM +0530, Anshuman Khandual wrote:
> On 06/16/2016 11:07 AM, Minchan Kim wrote:
> > On Thu, Jun 16, 2016 at 09:12:07AM +0530, Anshuman Khandual wrote:
> >> On 06/16/2016 05:56 AM, Minchan Kim wrote:
> >>> On Wed, Jun 15, 2016 at 12:15
On Thu, Jun 16, 2016 at 05:42:11PM +0900, Sergey Senozhatsky wrote:
> On (06/16/16 15:47), Minchan Kim wrote:
> > > [..]
> > > > > this is what I'm getting with the [zsmalloc: keep first object offset
> > > > > in struct page]
> > > > &g
On Thu, Jun 16, 2016 at 02:22:09PM +0900, Sergey Senozhatsky wrote:
> On (06/16/16 13:47), Minchan Kim wrote:
> [..]
> > > this is what I'm getting with the [zsmalloc: keep first object offset in
> > > struct page]
> > > applied: "count:0 mapcount:
On Thu, Jun 16, 2016 at 09:12:07AM +0530, Anshuman Khandual wrote:
> On 06/16/2016 05:56 AM, Minchan Kim wrote:
> > On Wed, Jun 15, 2016 at 12:15:04PM +0530, Anshuman Khandual wrote:
> >> On 06/15/2016 08:02 AM, Minchan Kim wrote:
> >>> Hi,
> >>>
>
On Thu, Jun 16, 2016 at 01:23:43PM +0900, Sergey Senozhatsky wrote:
> On (06/16/16 11:58), Minchan Kim wrote:
> [..]
> > RAX: 2065676162726166 so rax is totally garbage, I think.
> > It means obj_to_head returns garbage because get_first_obj_offset is
> > utter crab b
On Thu, Jun 16, 2016 at 11:48:27AM +0900, Sergey Senozhatsky wrote:
> Hi,
>
> On (06/16/16 08:12), Minchan Kim wrote:
> > > [ 315.146533] kasan: CONFIG_KASAN_INLINE enabled
> > > [ 315.146538] kasan: GPF could be caused by NULL-ptr deref or user
> > > memory
On Wed, Jun 15, 2016 at 12:15:04PM +0530, Anshuman Khandual wrote:
> On 06/15/2016 08:02 AM, Minchan Kim wrote:
> > Hi,
> >
> > On Mon, Jun 13, 2016 at 03:08:19PM +0530, Anshuman Khandual wrote:
> >> > On 05/31/2016 05:31 AM, Minchan Kim wrote:
> &g
Hi Sergey,
On Wed, Jun 15, 2016 at 04:59:09PM +0900, Sergey Senozhatsky wrote:
> Hello Minchan,
>
> -next 4.7.0-rc3-next-20160614
>
>
> [ 315.146533] kasan: CONFIG_KASAN_INLINE enabled
> [ 315.146538] kasan: GPF could be caused by NULL-ptr deref or user memory
> access
> [ 315.146546] gener
Hi,
On Mon, Jun 13, 2016 at 03:08:19PM +0530, Anshuman Khandual wrote:
> On 05/31/2016 05:31 AM, Minchan Kim wrote:
> > @@ -791,6 +921,7 @@ static int __unmap_and_move(struct page *page, struct
> > page *newpage,
> > int rc = -EAGAIN;
> > int page_was_mapped =
On Wed, Jun 01, 2016 at 02:41:51PM -0700, Andrew Morton wrote:
> On Wed, 1 Jun 2016 08:21:09 +0900 Minchan Kim wrote:
>
> > Recently, I got many reports about perfermance degradation in embedded
> > system(Android mobile phone, webOS TV and so on) and easy fork fail.
> &
x-foundation.org
Cc: Jonathan Corbet
Cc: John Einar Reitan
Cc: dri-de...@lists.freedesktop.org
Cc: Sergey Senozhatsky
Acked-by: Vlastimil Babka
Signed-off-by: Gioh Kim
Signed-off-by: Minchan Kim
---
Documentation/filesystems/Locking | 4 +
Documentation/filesystems/vfs.txt | 11 +++
Docume
eral
migration functions and make balloon compaction simple.
Cc: virtualization@lists.linux-foundation.org
Cc: Rafael Aquini
Cc: Konstantin Khlebnikov
Acked-by: Vlastimil Babka
Signed-off-by: Gioh Kim
Signed-off-by: Minchan Kim
---
drivers/virtio/virtio_balloon.c| 54 +++---
c: Joonsoo Kim
Cc: Konstantin Khlebnikov
Cc: Mel Gorman
Cc: Naoya Horiguchi
Cc: Rafael Aquini
Cc: Rik van Riel
Cc: Sergey Senozhatsky
Cc: virtualization@lists.linux-foundation.org
Cc: Gioh Kim
Cc: Chan Gyun Jeong
Cc: Sangseok Lee
Cc: Kyeongdon Kim
Cc: Chulmin Kim
Minchan Kim (12):
mm: us
On Tue, May 31, 2016 at 09:52:48AM +0200, Vlastimil Babka wrote:
> On 05/31/2016 02:01 AM, Minchan Kim wrote:
> >Per Vlastimi's review comment.
> >
> >Thanks for the detail review, Vlastimi!
> >If you have another concern, feel free to say.
>
> I don't f
Per Vlastimi's review comment.
Thanks for the detail review, Vlastimi!
If you have another concern, feel free to say.
After I resolve all thing, I will send v7 rebased on recent mmotm.
>From b14aab2d3ac0702c7b2eec36409d74406d43 Mon Sep 17 00:00:00 2001
From: Minchan Kim
Date: Fr
On Mon, May 30, 2016 at 11:36:07AM +0200, Vlastimil Babka wrote:
> On 05/30/2016 03:39 AM, Minchan Kim wrote:
> >After isolation, VM calls migratepage of driver with isolated page.
> >The function of migratepage is to move content of the old page to new page
> >and set up
Per Vlastimil's review comment,
Vlastimil, I updated based on your comment. Please review this.
If everything is done, I will send v7 rebased on recent mmotm.
Thanks for the review!
>From ad4157e98651a2d18fd0a4ae90d1d9f609aab314 Mon Sep 17 00:00:00 2001
From: Minchan Kim
Date: Fri, 8
On Fri, May 27, 2016 at 04:26:21PM +0200, Vlastimil Babka wrote:
> On 05/20/2016 04:23 PM, Minchan Kim wrote:
> >We have allowed migration for only LRU pages until now and it was
> >enough to make high-order pages. But recently, embedded system(e.g.,
> >webOS, android) use
eral
migration functions and make balloon compaction simple.
Cc: virtualization@lists.linux-foundation.org
Cc: Rafael Aquini
Cc: Konstantin Khlebnikov
Signed-off-by: Gioh Kim
Signed-off-by: Minchan Kim
---
drivers/virtio/virtio_balloon.c| 54 +++---
include/linux/balloon_com
oundation.org
Cc: Jonathan Corbet
Cc: John Einar Reitan
Cc: dri-de...@lists.freedesktop.org
Cc: Sergey Senozhatsky
Signed-off-by: Gioh Kim
Signed-off-by: Minchan Kim
---
Documentation/filesystems/Locking | 4 +
Documentation/filesystems/vfs.txt | 11 +++
Documentation/vm/page_migration
ey Senozhatsky
Cc: virtualization@lists.linux-foundation.org
Cc: Gioh Kim
Cc: Chan Gyun Jeong
Cc: Sangseok Lee
Cc: Kyeongdon Kim
Cc: Chulmin Kim
Minchan Kim (12):
mm: use put_page to free page instead of putback_lru_page
mm: migrate: support non-lru movable page migration
mm: balloon: u
On Mon, May 16, 2016 at 04:17:51PM +0900, Sergey Senozhatsky wrote:
> On (05/09/16 11:20), Minchan Kim wrote:
> [..]
> > +++ b/include/linux/migrate.h
> > @@ -32,11 +32,16 @@ extern char *migrate_reason_names[MR_TYPES];
> >
> > #ifdef CONFIG_MIGRATION
> >
On Mon, May 16, 2016 at 04:04:55PM +0900, Sergey Senozhatsky wrote:
> On (05/09/16 11:20), Minchan Kim wrote:
> > +++ b/include/linux/migrate.h
> > @@ -32,11 +32,16 @@ extern char *migrate_reason_names[MR_TYPES];
> >
> > #ifdef CONFIG_MIGRATION
> >
> &
virtualization@lists.linux-foundation.org
Cc: Jonathan Corbet
Cc: John Einar Reitan
Cc: dri-de...@lists.freedesktop.org
Cc: Sergey Senozhatsky
Signed-off-by: Gioh Kim
Signed-off-by: Minchan Kim
---
Documentation/filesystems/Locking | 4 +
Documentation/filesystems/vfs.txt | 11 ++
Documentation/vm/pag
stantin Khlebnikov
Cc: Mel Gorman
Cc: Naoya Horiguchi
Cc: Rafael Aquini
Cc: Rik van Riel
Cc: Sergey Senozhatsky
Cc: virtualization@lists.linux-foundation.org
Cc: Gioh Kim
Cc: Chan Gyun Jeong
Cc: Sangseok Lee
Cc: Kyeongdon Kim
Cc: Chulmin Kim
Minchan Kim (12):
mm: use put_page to fr
eral
migration functions and make balloon compaction simple.
Cc: virtualization@lists.linux-foundation.org
Cc: Rafael Aquini
Cc: Konstantin Khlebnikov
Signed-off-by: Gioh Kim
Signed-off-by: Minchan Kim
---
drivers/virtio/virtio_balloon.c| 52 +++--
include/linux/balloon_com
Hello Andrew,
On Wed, Apr 27, 2016 at 01:20:35PM -0700, Andrew Morton wrote:
> On Wed, 27 Apr 2016 16:48:13 +0900 Minchan Kim wrote:
>
> > Recently, I got many reports about perfermance degradation in embedded
> > system(Android mobile phone, webOS TV and so on) and easy fork
n Einar Reitan
Cc: Jonathan Corbet
Cc: Joonsoo Kim
Cc: Konstantin Khlebnikov
Cc: Mel Gorman
Cc: Naoya Horiguchi
Cc: Rafael Aquini
Cc: Rik van Riel
Cc: Sergey Senozhatsky
Cc: virtualization@lists.linux-foundation.org
Cc: Gioh Kim
Cc: Chan Gyun Jeong
Cc: Sangseok Lee
Cc: Kyeongdon Kim
Cc: Chulmin
virtualization@lists.linux-foundation.org
Cc: Jonathan Corbet
Cc: John Einar Reitan
Cc: dri-de...@lists.freedesktop.org
Cc: Sergey Senozhatsky
Signed-off-by: Gioh Kim
Signed-off-by: Minchan Kim
---
Documentation/filesystems/Locking | 4 +
Documentation/filesystems/vfs.txt | 11 ++
Documentation/vm/pag
eral
migration functions and make balloon compaction simple.
Cc: virtualization@lists.linux-foundation.org
Cc: Rafael Aquini
Cc: Konstantin Khlebnikov
Signed-off-by: Gioh Kim
Signed-off-by: Minchan Kim
---
drivers/virtio/virtio_balloon.c| 52 +++--
include/linux/balloon_com
Hi Sergey,
On Mon, Apr 18, 2016 at 10:04:08AM +0900, Sergey Senozhatsky wrote:
> Hello Minchan,
>
> On (03/30/16 16:12), Minchan Kim wrote:
> [..]
> > @@ -1835,23 +1827,31 @@ static void __zs_compact(struct zs_pool *pool,
> > struct size_class *class)
> >
On Mon, Apr 18, 2016 at 09:33:05AM +0900, Sergey Senozhatsky wrote:
> Hello,
>
> On (03/30/16 16:12), Minchan Kim wrote:
> > @@ -1421,7 +1434,6 @@ static unsigned long obj_malloc(struct size_class
> > *class,
> > unsigned long m_offset;
> >
On Mon, Apr 18, 2016 at 12:56:21AM +0900, Sergey Senozhatsky wrote:
> Hello,
>
> On (03/30/16 16:12), Minchan Kim wrote:
> [..]
> > +static void objidx_to_page_and_offset(struct size_class *class,
> > + struct page *first_page,
> > +
On Mon, Apr 18, 2016 at 12:08:04AM +0900, Sergey Senozhatsky wrote:
> Hello,
>
> On (03/30/16 16:12), Minchan Kim wrote:
> [..]
> > +static int get_zspage_inuse(struct page *first_page)
> > +{
> > + struct zs_meta *m;
> > +
> > + VM_BUG_ON_P
On Mon, Apr 04, 2016 at 03:17:18PM +0200, John Einar Reitan wrote:
> On Wed, Mar 30, 2016 at 04:11:59PM +0900, Minchan Kim wrote:
> > Recently, I got many reports about perfermance degradation
> > in embedded system(Android mobile phone, webOS TV and so on)
> > and
On Tue, Apr 05, 2016 at 02:03:05PM +0200, Vlastimil Babka wrote:
> On 03/30/2016 09:12 AM, Minchan Kim wrote:
> >Now, VM has a feature to migrate non-lru movable pages so
> >balloon doesn't need custom migration hooks in migrate.c
> >and compact.c. Instead, this patc
On Mon, Apr 04, 2016 at 03:24:34PM +0200, Vlastimil Babka wrote:
> On 04/04/2016 07:12 AM, Minchan Kim wrote:
> >On Fri, Apr 01, 2016 at 11:29:14PM +0200, Vlastimil Babka wrote:
> >>Might have been better as a separate migration patch and then a
> >>compaction patch.
On Mon, Apr 04, 2016 at 03:09:22PM +0200, Vlastimil Babka wrote:
> On 04/04/2016 04:25 AM, Minchan Kim wrote:
> >>
> >>Ah, I see, so it's designed with page lock to handle the concurrent
> >>isolations etc.
> >>
> >>In http://marc.info/?l=li
On Mon, Apr 04, 2016 at 03:53:59PM +1000, Balbir Singh wrote:
>
>
> On 30/03/16 18:12, Minchan Kim wrote:
> > Procedure of page migration is as follows:
> >
> > First of all, it should isolate a page from LRU and try to
> > migrate the page. If it is success
Forking new thread,
Hello Naoya,
On Mon, Apr 04, 2016 at 04:45:12AM +, Naoya Horiguchi wrote:
> On Mon, Apr 04, 2016 at 10:39:17AM +0900, Minchan Kim wrote:
> > On Fri, Apr 01, 2016 at 02:58:21PM +0200, Vlastimil Babka wrote:
> > > On 03/30/2016 09:12 AM, Minchan Kim wrote
27;s a good idea
to separate compaction and migration part.
I will just resend to change the tile from "mm/compaction" to
"mm/migration".
>
> On 03/30/2016 09:12 AM, Minchan Kim wrote:
> >We have allowed migration for only LRU pages until now and it was
> >enough to
On Fri, Apr 01, 2016 at 04:38:34PM +0200, Vlastimil Babka wrote:
> On 03/30/2016 09:12 AM, Minchan Kim wrote:
> >This patch describes what a subsystem should do for non-lru movable
> >page supporting.
>
> Intentionally reading this first without studying the code to bette
On Fri, Apr 01, 2016 at 02:58:21PM +0200, Vlastimil Babka wrote:
> On 03/30/2016 09:12 AM, Minchan Kim wrote:
> >Procedure of page migration is as follows:
> >
> >First of all, it should isolate a page from LRU and try to
> >migrate the page. If it is successful,
On Thu, Mar 31, 2016 at 09:29:32AM +0900, Sergey Senozhatsky wrote:
> On (03/30/16 16:11), Andrew Morton wrote:
> [..]
> > > For details, please read description in
> > > "mm/compaction: support non-lru movable page migration".
> >
> > OK, I grabbed all these.
> >
> > I wonder about testing cover
On Wed, Mar 30, 2016 at 04:11:41PM -0700, Andrew Morton wrote:
> On Wed, 30 Mar 2016 16:11:59 +0900 Minchan Kim wrote:
>
> > Recently, I got many reports about perfermance degradation
> > in embedded system(Android mobile phone, webOS TV and so on)
> > and failed to f
ocated objects in the zspage with pinning tag so
user cannot free using object. With those functions, this patch
redesign compaction.
Those functions will be used for implementing zspage runtime
migrations, too.
Signed-off-by: Minchan Kim
---
mm/zsmalloc.c
, too right
before calling ->migratepage so such race doesn't exist any more.
Signed-off-by: Minchan Kim
---
include/uapi/linux/magic.h | 1 +
mm/zsmalloc.c | 332 +++--
2 files changed, 318 insertions(+), 15 deletions(-)
diff --git a
ode 0, zone DMA214 66 87 29 10 3 0 0
0 0 0
Node 0, zoneDMA32 1612 3139 3154 2469 1745990384 94
7 0 0
As you can see, compaction made so many high-order pages. Yay!
Reviewed-by: Sergey Senozhatsky
Zsmalloc stores first free object's position into first_page->freelist
in each zspage. If we change it with object index from first_page
instead of location, we could squeeze it into page->mapping because
the number of bit we need to store offset is at most 11bit.
Signed-off-by:
this feature and realworkload overhead(i.e.,
most overhead comes from compression).
Signed-off-by: Minchan Kim
---
mm/zsmalloc.c | 129 +++---
1 file changed, 114 insertions(+), 15 deletions(-)
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index
could squeeze inuse object count to page->mapping.
Signed-off-by: Minchan Kim
---
mm/zsmalloc.c | 103 --
1 file changed, 71 insertions(+), 32 deletions(-)
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 8649d0243e6c..4dd72a803568 100644
d-off-by: Minchan Kim
---
mm/zsmalloc.c | 80 ++-
1 file changed, 46 insertions(+), 34 deletions(-)
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index d4d33a819832..14bcc741eead 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -981,7 +
be replaced in run-time calculation.
So, this patch change page->lru list for chaining with singly
linked list via page->freelist squeeze and introduces
get_first_obj_ofs to get first object offset in a page.
With that, it could maintain page chaining without using
page->lru.
Signed
zspage migration.
Signed-off-by: Minchan Kim
---
mm/zsmalloc.c | 46 +++---
1 file changed, 23 insertions(+), 23 deletions(-)
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 14bcc741eead..b11dcd718502 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -949,7
nctions and make balloon compaction simple.
Cc: virtualization@lists.linux-foundation.org
Cc: Rafael Aquini
Cc: Konstantin Khlebnikov
Signed-off-by: Gioh Kim
Signed-off-by: Minchan Kim
---
drivers/virtio/virtio_balloon.c| 53 ---
include/linux/balloon_compact
For supporting migration from VM, we need to have address_space
on every page so zsmalloc shouldn't use page->mapping. So,
this patch moves zs_meta from mapping to freelist.
Signed-off-by: Minchan Kim
---
mm/zsmalloc.c | 22 +++---
1 file changed, 11 insertions(+), 11 d
We don't use page->_mapcount any more so no need to reset.
Signed-off-by: Minchan Kim
---
mm/zsmalloc.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 4dd72a803568..0f6cce9b9119 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -922,7 +922,6 @
dri-de...@lists.freedesktop.org
Cc: virtualization@lists.linux-foundation.org
Signed-off-by: Gioh Kim
Signed-off-by: Minchan Kim
---
Documentation/filesystems/Locking | 4 +
Documentation/filesystems/vfs.txt | 5 +
fs/proc/page.c | 3 +
include/linu
This patch describes what a subsystem should do for non-lru movable
page supporting.
Cc: Jonathan Corbet
Signed-off-by: Minchan Kim
---
Documentation/filesystems/vfs.txt | 11 ++-
Documentation/vm/page_migration | 69 ++-
2 files changed, 78 insertions
Every zspage in a size_class has same number of max objects so
we could move it to a size_class.
Signed-off-by: Minchan Kim
---
mm/zsmalloc.c | 32 +++-
1 file changed, 15 insertions(+), 17 deletions(-)
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index a0890e9003e2
quot;Yeah, and compaction (perhaps also other migration users) has to drain
the lru pvec... Getting rid of this stuff is worth even by itself."
Cc: Mel Gorman
Cc: Hugh Dickins
Cc: Naoya Horiguchi
Acked-by: Vlastimil Babka
Signed-off-by: Minchan Kim
---
mm/migrate.c | 50 +++
2016-03-17-15-04
* reordering patches to merge clean-up patches first
* add Acked-by/Reviewed-by from Vlastimil and Sergey
* use each own mount model instead of reusing anon_inode_fs - Al Viro
* small changes - YiPing, Gioh
Minchan Kim (16):
mm: use put_page to free page instead of putba
Hello Andrew,
On Mon, Mar 21, 2016 at 03:30:49PM +0900, Minchan Kim wrote:
> Recently, I got many reports about perfermance degradation
> in embedded system(Android mobile phone, webOS TV and so on)
> and failed to fork easily.
>
> The problem was fragmentation caused by zram
On Thu, Mar 24, 2016 at 05:26:50AM +0900, Gioh Kim wrote:
>Hmmm... But, in failure case, is it safe to call putback_lru_page() for
>them?
>And, PageIsolated() would be left. Is it okay? It's not symmetric that
>isolated page can be freed by decreasing ref count without calling
>
On Wed, Mar 23, 2016 at 02:05:11PM +0900, Joonsoo Kim wrote:
> On Tue, Mar 22, 2016 at 11:55:45PM +0900, Minchan Kim wrote:
> > On Tue, Mar 22, 2016 at 02:50:37PM +0900, Joonsoo Kim wrote:
> > > On Mon, Mar 21, 2016 at 03:31:02PM +0900, Minchan Kim wrote:
> > > > We h
On Tue, Mar 22, 2016 at 02:50:37PM +0900, Joonsoo Kim wrote:
> On Mon, Mar 21, 2016 at 03:31:02PM +0900, Minchan Kim wrote:
> > We have allowed migration for only LRU pages until now and it was
> > enough to make high-order pages. But recently, embedded system(e.g.,
> > webO
On Mon, Mar 21, 2016 at 05:48:25PM +0800, kbuild test robot wrote:
> mm/zsmalloc.c:1103:2-3: Unneeded semicolon
>
>
> Remove unneeded semicolon.
>
> Generated by: scripts/coccinelle/misc/semicolon.cocci
>
> CC: Minchan Kim
> Signed-off-by: Fengguang Wu
> ---
&
e system]
>
> url:
> https://github.com/0day-ci/linux/commits/Minchan-Kim/Support-non-lru-page-migration/20160321-143339
> config: x86_64-randconfig-x000-201612 (attached as .config)
> reproduce:
> # save the attached .config to linux build tree
> make ARCH=x8
, too right
before calling ->migratepage so such race doesn't exist any more.
Signed-off-by: Minchan Kim
---
include/uapi/linux/magic.h | 1 +
mm/zsmalloc.c | 329 +++--
2 files changed, 317 insertions(+), 13 deletions(-)
diff --git a
nctions and make balloon compaction simple.
Cc: virtualization@lists.linux-foundation.org
Cc: Rafael Aquini
Cc: Konstantin Khlebnikov
Signed-off-by: Gioh Kim
Signed-off-by: Minchan Kim
---
drivers/virtio/virtio_balloon.c| 45 -
include/linux/balloon_compact
this feature and realworkload overhead(i.e.,
most overhead comes from compression).
Signed-off-by: Minchan Kim
---
mm/zsmalloc.c | 131 +++---
1 file changed, 115 insertions(+), 16 deletions(-)
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index
4. If migration fails, putback function of subsystem should
clear PG_isolated via ClearPageIsolated.
Cc: Vlastimil Babka
Cc: Mel Gorman
Cc: Hugh Dickins
Cc: dri-de...@lists.freedesktop.org
Cc: virtualization@lists.linux-foundation.org
Signed-off-by: Gioh Kim
Signed-off-by: Minch
ode 0, zone DMA214 66 87 29 10 3 0 0
0 0 0
Node 0, zoneDMA32 1612 3139 3154 2469 1745990384 94
7 0 0
As you can see, compaction made so many high-order pages. Yay!
Reviewed-by: Sergey Senozhatsky
ocated objects in the zspage with pinning tag so
user cannot free using object. With those functions, this patch
redesign compaction.
Those functions will be used for implementing zspage runtime
migrations, too.
Signed-off-by: Minchan Kim
---
mm/zsmalloc.c
be replaced in run-time calculation.
So, this patch change page->lru list for chaining with singly
linked list via page->freelist squeeze and introduces
get_first_obj_ofs to get first object offset in a page.
With that, it could maintain page chaining without using
page->lru.
Signed
d-off-by: Minchan Kim
---
mm/zsmalloc.c | 80 ++-
1 file changed, 46 insertions(+), 34 deletions(-)
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 958f27a9079d..833da8f4ffc9 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -982,7 +
zspage migration.
Signed-off-by: Minchan Kim
---
mm/zsmalloc.c | 46 +++---
1 file changed, 23 insertions(+), 23 deletions(-)
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 833da8f4ffc9..9c0ab1e92e9b 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -950,7
For supporting migration from VM, we need to have address_space
on every page so zsmalloc shouldn't use page->mapping. So,
this patch moves zs_meta from mapping to freelist.
Signed-off-by: Minchan Kim
---
mm/zsmalloc.c | 23 ---
1 file changed, 12 insertions(+), 11 d
could squeeze inuse object count to page->mapping.
Signed-off-by: Minchan Kim
---
mm/zsmalloc.c | 103 --
1 file changed, 71 insertions(+), 32 deletions(-)
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 8649d0243e6c..4dd72a803568 100644
Zsmalloc stores first free object's position into first_page->freelist
in each zspage. If we change it with object index from first_page
instead of location, we could squeeze it into page->mapping because
the number of bit we need to store offset is at most 11bit.
Signed-off-by:
Every zspage in a size_class has same number of max objects so
we could move it to a size_class.
Signed-off-by: Minchan Kim
---
mm/zsmalloc.c | 32 +++-
1 file changed, 15 insertions(+), 17 deletions(-)
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index a0890e9003e2
tions so higher functions
can rely on the assertion in the primitive function.
4. Don't use assertion if following instruction can trigger Oops
Reviewed-by: Sergey Senozhatsky
Signed-off-by: Minchan Kim
---
mm/zsmalloc.c | 42 +++---
1 file changed, 15
Let's remove unused pool param in obj_free
Reviewed-by: Sergey Senozhatsky
Signed-off-by: Minchan Kim
---
mm/zsmalloc.c | 7 +++
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 16556a6db628..a0890e9003e2 100644
--- a/mm/zsmalloc.c
+++
This patch cleans up function parameter "struct page".
Many functions of zsmalloc expects that page paramter is "first_page"
so use "first_page" rather than "page" for code readability.
Reviewed-by: Sergey Senozhatsky
Signed-off-
This patch cleans up function parameter ordering to order
higher data structure first.
Reviewed-by: Sergey Senozhatsky
Signed-off-by: Minchan Kim
---
mm/zsmalloc.c | 50 ++
1 file changed, 26 insertions(+), 24 deletions(-)
diff --git a/mm
gey
* use each own mount model instead of reusing anon_inode_fs - Al Viro
* small changes - YiPing, Gioh
Minchan Kim (18):
mm: use put_page to free page instead of putback_lru_page
zsmalloc: use first_page rather than page
zsmalloc: clean up many BUG_ON
zsmalloc: reordering function para
quot;Yeah, and compaction (perhaps also other migration users) has to drain
the lru pvec... Getting rid of this stuff is worth even by itself."
Cc: Mel Gorman
Cc: Hugh Dickins
Cc: Naoya Horiguchi
Acked-by: Vlastimil Babka
Signed-off-by: Minchan Kim
---
mm/migrate.c | 50 +++
On Thu, Mar 17, 2016 at 08:09:50PM +0800, YiPing Xu wrote:
>
>
> On 2016/3/15 14:51, Minchan Kim wrote:
> >On Tue, Mar 15, 2016 at 03:40:53PM +0900, Sergey Senozhatsky wrote:
> >>On (03/11/16 16:30), Minchan Kim wrote:
> >>>-static void *location_to_obj(stru
On Tue, Mar 15, 2016 at 03:40:53PM +0900, Sergey Senozhatsky wrote:
> On (03/11/16 16:30), Minchan Kim wrote:
> > -static void *location_to_obj(struct page *page, unsigned long obj_idx)
> > +static void objidx_to_page_and_ofs(struct size_class *class,
> > +
On Tue, Mar 15, 2016 at 03:28:24PM +0900, Sergey Senozhatsky wrote:
> On (03/11/16 16:30), Minchan Kim wrote:
> > Every zspage in a size_class has same number of max objects so
> > we could move it to a size_class.
> >
> > Signed-off-by: Minchan Kim
>
On Mon, Mar 14, 2016 at 09:48:33AM +0100, Vlastimil Babka wrote:
> On 03/11/2016 08:30 AM, Minchan Kim wrote:
> >Procedure of page migration is as follows:
> >
> >First of all, it should isolate a page from LRU and try to
> >migrate the page. If it is successful,
On Sat, Mar 12, 2016 at 11:09:36AM +0800, xuyiping wrote:
>
>
> On 2016/3/11 15:30, Minchan Kim wrote:
> >For migration, we need to create sub-page chain of zspage
> >dynamically so this patch factors it out from alloc_zspage.
> >
> >As a minor refactoring,
On Sat, Mar 12, 2016 at 09:44:48AM +0800, xuyiping wrote:
>
>
> On 2016/3/11 15:30, Minchan Kim wrote:
> >Every zspage in a size_class has same number of max objects so
> >we could move it to a size_class.
> >
> >Signed-off-by: Minchan Ki
;
> url:
> https://github.com/0day-ci/linux/commits/Minchan-Kim/Support-non-lru-page-migration/20160311-153649
> config: x86_64-nfsroot (attached as .config)
> reproduce:
> # save the attached .config to linux build tree
> make ARCH=x86_64
>
> All erro
this feature and realworkload overhead(i.e.,
most overhead comes from compression).
Signed-off-by: Minchan Kim
---
mm/zsmalloc.c | 131 +++---
1 file changed, 115 insertions(+), 16 deletions(-)
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index
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