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 +-
>
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
uot;mm: balloon: use general non-lru movable page feature")
> Signed-off-by: Yisheng Xie <xieyishe...@huawei.com>
Thanks for the fixing!
Acked-by: Minchan Kim <minc...@kernel.org>
___
Virtualization mailing list
Virtual
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
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]
> > > > > ap
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:-127&
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]
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 <minc...@kernel.org> wrote:
>
> > Recently, I got many reports about perfermance degradation in embedded
> > system(Android mobile phone, webOS TV and s
astimil Babka <vba...@suse.cz>
Signed-off-by: Gioh Kim <gi-oh@profitbricks.com>
Signed-off-by: Minchan Kim <minc...@kernel.org>
---
Documentation/filesystems/Locking | 4 +
Documentation/filesystems/vfs.txt | 11 +++
Documentation/vm/page_migration | 107 +++
migration functions and make balloon compaction simple.
Cc: virtualization@lists.linux-foundation.org
Cc: Rafael Aquini <aqu...@redhat.com>
Cc: Konstantin Khlebnikov <koc...@gmail.com>
Acked-by: Vlastimil Babka <vba...@suse.cz>
Signed-off-by: Gioh Kim <gi-oh@profitbricks.com>
..@lge.com>
Cc: Kyeongdon Kim <kyeongdon@lge.com>
Cc: Chulmin Kim <cmlaika@samsung.com>
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: use general non-lru movable page featur
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 for now :)
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 <minc...@kern
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 <minc...@kern
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
migration functions and make balloon compaction simple.
Cc: virtualization@lists.linux-foundation.org
Cc: Rafael Aquini <aqu...@redhat.com>
Cc: Konstantin Khlebnikov <koc...@gmail.com>
Signed-off-by: Gioh Kim <gi-oh@profitbricks.com>
Signed-off-by: Minchan Kim <minc...@k
u...@google.com>
Cc: Rafael Aquini <aqu...@redhat.com>
Cc: virtualization@lists.linux-foundation.org
Cc: Jonathan Corbet <cor...@lwn.net>
Cc: John Einar Reitan <john.rei...@foss.arm.com>
Cc: dri-de...@lists.freedesktop.org
Cc: Sergey Senozhatsky <sergey.senozhat...
gmail.com>
Cc: virtualization@lists.linux-foundation.org
Cc: Gioh Kim <gi-oh@profitbricks.com>
Cc: Chan Gyun Jeong <chan.je...@lge.com>
Cc: Sangseok Lee <sangseok@lge.com>
Cc: Kyeongdon Kim <kyeongdon@lge.com>
Cc: Chulmin Kim <cmlaika@samsung.com>
Minchan Kim
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
> >
> &
: Hugh Dickins <hu...@google.com>
Cc: Rafael Aquini <aqu...@redhat.com>
Cc: virtualization@lists.linux-foundation.org
Cc: Jonathan Corbet <cor...@lwn.net>
Cc: John Einar Reitan <john.rei...@foss.arm.com>
Cc: dri-de...@lists.freedesktop.org
Cc: Sergey Senozhatsky <sergey.senoz
t.com>
Cc: Rik van Riel <r...@redhat.com>
Cc: Sergey Senozhatsky <sergey.senozhat...@gmail.com>
Cc: virtualization@lists.linux-foundation.org
Cc: Gioh Kim <gi-oh@profitbricks.com>
Cc: Chan Gyun Jeong <chan.je...@lge.com>
Cc: Sangseok Lee <sangseok@lge.com>
Cc:
migration functions and make balloon compaction simple.
Cc: virtualization@lists.linux-foundation.org
Cc: Rafael Aquini <aqu...@redhat.com>
Cc: Konstantin Khlebnikov <koc...@gmail.com>
Signed-off-by: Gioh Kim <gi-oh@profitbricks.com>
Signed-off-by: Minchan Kim <minc...@k
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 <minc...@kernel.org> wrote:
>
> > Recently, I got many reports about perfermance degradation in embedded
> > system(Android mobile phone, webO
om>
Cc: Sangseok Lee <sangseok@lge.com>
Cc: Kyeongdon Kim <kyeongdon@lge.com>
Cc: Chulmin Kim <cmlaika@samsung.com>
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: use
: Hugh Dickins <hu...@google.com>
Cc: Rafael Aquini <aqu...@redhat.com>
Cc: virtualization@lists.linux-foundation.org
Cc: Jonathan Corbet <cor...@lwn.net>
Cc: John Einar Reitan <john.rei...@foss.arm.com>
Cc: dri-de...@lists.freedesktop.org
Cc: Sergey Senozhatsky <sergey.senoz
migration functions and make balloon compaction simple.
Cc: virtualization@lists.linux-foundation.org
Cc: Rafael Aquini <aqu...@redhat.com>
Cc: Konstantin Khlebnikov <koc...@gmail.com>
Signed-off-by: Gioh Kim <gi-oh@profitbricks.com>
Signed-off-by: Minchan Kim <minc...@k
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 patch imp
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=linux-mm=
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
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
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 make high
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
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 succe
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
On Wed, Mar 30, 2016 at 04:11:41PM -0700, Andrew Morton wrote:
> On Wed, 30 Mar 2016 16:11:59 +0900 Minchan Kim <minc...@kernel.org> wrote:
>
> > Recently, I got many reports about perfermance degradation
> > in embedded system(Android mobile phone, webOS TV and so on
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 <minc...@kernel.org>
---
mm/zsma
, too right
before calling ->migratepage so such race doesn't exist any more.
Signed-off-by: Minchan Kim <minc...@kernel.org>
---
include/uapi/linux/magic.h | 1 +
mm/zsmalloc.c | 332 +++--
2 files changed, 318 insertions(+), 15
.senozhat...@gmail.com>
Signed-off-by: Minchan Kim <minc...@kernel.org>
---
drivers/block/zram/zram_drv.c | 3 ++-
mm/zsmalloc.c | 2 +-
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
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: Minchan Kim
of this feature and realworkload overhead(i.e.,
most overhead comes from compression).
Signed-off-by: Minchan Kim <minc...@kernel.org>
---
mm/zsmalloc.c | 129 +++---
1 file changed, 114 insertions(+), 15 deletions(-)
diff --git a/mm/zsmalloc.
could squeeze inuse object count to page->mapping.
Signed-off-by: Minchan Kim <minc...@kernel.org>
---
mm/zsmalloc.c | 103 --
1 file changed, 71 insertions(+), 32 deletions(-)
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
ind
-by: Minchan Kim <minc...@kernel.org>
---
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/zsma
placed 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-off-
zspage migration.
Signed-off-by: Minchan Kim <minc...@kernel.org>
---
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/m
ctions and make balloon compaction simple.
Cc: virtualization@lists.linux-foundation.org
Cc: Rafael Aquini <aqu...@redhat.com>
Cc: Konstantin Khlebnikov <koc...@gmail.com>
Signed-off-by: Gioh Kim <guru...@hanmail.net>
Signed-off-by: Minchan Kim <minc...@kernel.org>
---
d
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 <minc...@kernel.org>
---
mm/zsmalloc.c | 22 +++---
1 file ch
We don't use page->_mapcount any more so no need to reset.
Signed-off-by: Minchan Kim <minc...@kernel.org>
---
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
se.de>
Cc: Hugh Dickins <hu...@google.com>
Cc: dri-de...@lists.freedesktop.org
Cc: virtualization@lists.linux-foundation.org
Signed-off-by: Gioh Kim <guru...@hanmail.net>
Signed-off-by: Minchan Kim <minc...@kernel.org>
---
Documentation/filesystems/Locking | 4 +
Document
This patch describes what a subsystem should do for non-lru movable
page supporting.
Cc: Jonathan Corbet <cor...@lwn.net>
Signed-off-by: Minchan Kim <minc...@kernel.org>
---
Documentation/filesystems/vfs.txt | 11 ++-
Documentation/vm/page_migr
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 <minc...@kernel.org>
---
mm/zsmalloc.c | 32 +++-
1 file changed, 15 insertions(+), 17 deletions(-)
diff --git a/mm/zsmalloc.c b/mm/zsma
ction (perhaps also other migration users) has to drain
the lru pvec... Getting rid of this stuff is worth even by itself."
Cc: Mel Gorman <mgor...@suse.de>
Cc: Hugh Dickins <hu...@google.com>
Cc: Naoya Horiguchi <n-horigu...@ah.jp.nec.com>
Acked-by: Vlastimil Babka <vba...@suse
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 <minc...@kernel.org>
> Signe
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 <minc...@kernel.org>
---
include/uapi/linux/magic.h | 1 +
mm/zsmalloc.c | 329 +++--
2 files changed, 317 insertions(+), 13
ctions and make balloon compaction simple.
Cc: virtualization@lists.linux-foundation.org
Cc: Rafael Aquini <aqu...@redhat.com>
Cc: Konstantin Khlebnikov <koc...@gmail.com>
Signed-off-by: Gioh Kim <guru...@hanmail.net>
Signed-off-by: Minchan Kim <minc...@kernel.org>
---
d
of this feature and realworkload overhead(i.e.,
most overhead comes from compression).
Signed-off-by: Minchan Kim <minc...@kernel.org>
---
mm/zsmalloc.c | 131 +++---
1 file changed, 115 insertions(+), 16 deletions(-)
diff --git a/mm/zsmalloc.
oundation.org
Signed-off-by: Gioh Kim <guru...@hanmail.net>
Signed-off-by: Minchan Kim <minc...@kernel.org>
---
Documentation/filesystems/Locking | 4 +
Documentation/filesystems/vfs.txt | 5 ++
fs/proc/page.c | 3 +
include/linux/fs.h
.senozhat...@gmail.com>
Signed-off-by: Minchan Kim <minc...@kernel.org>
---
drivers/block/zram/zram_drv.c | 3 ++-
mm/zsmalloc.c | 2 +-
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
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 <minc...@kernel.org>
---
mm/zsma
placed 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-off-
-by: Minchan Kim <minc...@kernel.org>
---
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/zsma
zspage migration.
Signed-off-by: Minchan Kim <minc...@kernel.org>
---
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/m
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 <minc...@kernel.org>
---
mm/zsmalloc.c | 23 ---
1 file ch
could squeeze inuse object count to page->mapping.
Signed-off-by: Minchan Kim <minc...@kernel.org>
---
mm/zsmalloc.c | 103 --
1 file changed, 71 insertions(+), 32 deletions(-)
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
ind
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: Minchan Kim
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 <minc...@kernel.org>
---
mm/zsmalloc.c | 32 +++-
1 file changed, 15 insertions(+), 17 deletions(-)
diff --git a/mm/zsmalloc.c b/mm/zsma
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 <sergey.senozhat...@gmail.com>
Signed-off-by: Minchan Kim <minc...@kernel.org>
---
mm/zsm
Let's remove unused pool param in obj_free
Reviewed-by: Sergey Senozhatsky <sergey.senozhat...@gmail.com>
Signed-off-by: Minchan Kim <minc...@kernel.org>
---
mm/zsmalloc.c | 7 +++
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index
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 <sergey.senozhat...@gmail.com>
This patch cleans up function parameter ordering to order
higher data structure first.
Reviewed-by: Sergey Senozhatsky <sergey.senozhat...@gmail.com>
Signed-off-by: Minchan Kim <minc...@kernel.org>
---
mm/zsmalloc.c | 50 ++
1 file
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
ction (perhaps also other migration users) has to drain
the lru pvec... Getting rid of this stuff is worth even by itself."
Cc: Mel Gorman <mgor...@suse.de>
Cc: Hugh Dickins <hu...@google.com>
Cc: Naoya Horiguchi <n-horigu...@ah.jp.nec.com>
Acked-by: Vlastimil Babka <vba...@suse
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 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 succe
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 Kim <minc...@kernel
;
> 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
of this feature and realworkload overhead(i.e.,
most overhead comes from compression).
Signed-off-by: Minchan Kim <minc...@kernel.org>
---
mm/zsmalloc.c | 131 +++---
1 file changed, 115 insertions(+), 16 deletions(-)
diff --git a/mm/zsmalloc.
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 <minc...@kernel.org>
---
mm/zsma
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