io_uring]
Link: http://lkml.kernel.org/r/20200423145215.72666-1-minc...@kernel.org
[a...@linux-foundation.org: fix it for upstream changes]
[a...@linux-foundation.org: whoops]
[rdun...@infradead.org: add missing includes]
Link: http://lkml.kernel.org/r/20200302193630.68771-2-minc...@kernel.org
Sign
process_madvise syscall needs pidfd_get_pid function to translate pidfd to
pid so this patch move the function to kernel/pid.c.
Link: http://lkml.kernel.org/r/20200302193630.68771-5-minc...@kernel.org
Signed-off-by: Minchan Kim
Reviewed-by: Suren Baghdasaryan
Suggested-by: Alexander Duyck
* fix syscall number - SeongJae
* use get_pid_task - Kirill Tkhai
* extend API to support pid as well as pidfd - Kirill Tkhai
Minchan Kim (4):
mm/madvise: pass task and mm to do_madvise
pid: move pidfd_get_pid() to pid.c
mm/madvise: introduce process_madvise() syscall: an external memory
On Fri, Jun 12, 2020 at 04:03:41PM +0900, Jaewon Kim wrote:
>
>
> On 2020년 06월 12일 15:55, Minchan Kim wrote:
> > On Thu, Jun 11, 2020 at 05:54:12PM +0900, Jaewon Kim wrote:
> >>
> >> On 2020년 06월 10일 10:21, Minchan Kim wrote:
> >>> Hi Jaewon,
> &g
On Thu, Jun 11, 2020 at 05:54:12PM +0900, Jaewon Kim wrote:
>
>
> On 2020년 06월 10일 10:21, Minchan Kim wrote:
> > Hi Jaewon,
> >
> > On Tue, Jun 09, 2020 at 06:51:28PM +0900, Jaewon Kim wrote:
> >> zone_watermark_fast was introduced by commit 48ee5f3696f6 (&quo
Hi Jaewon,
On Tue, Jun 09, 2020 at 06:51:28PM +0900, Jaewon Kim wrote:
> zone_watermark_fast was introduced by commit 48ee5f3696f6 ("mm,
> page_alloc: shortcut watermark checks for order-0 pages"). The commit
> simply checks if free pages is bigger than watermark without additional
> calculation
On non RT
> kernels this maps to preempt_disable() as before, i.e. no functional
> change.
>
> [bigeasy: Use local_lock(), description, drop reordering]
>
> Cc: Minchan Kim
> Cc: Nitin Gupta
> Cc: Sergey Senozhatsky
> Signed-off-by: Mike Galbraith
> Signed-off-by: Sebastian Andrzej Siewior
Acked-by: Minchan Kim
nd a pointer dereference. This also simplifies the
> addition of a local_lock to struct zcomp_strm.
>
> Allocate zcomp::stream directly as per-CPU memory.
>
> Cc: Minchan Kim
> Cc: Nitin Gupta
> Cc: Sergey Senozhatsky
> Signed-off-by: Sebastian Andrzej Siewior
Acked-by: Minchan Kim
Looks good to me.
On Tue, May 19, 2020 at 09:19:56AM -0700, Minchan Kim wrote:
> Hi Christian,
>
> On Tue, May 19, 2020 at 09:45:18AM +0200, Christian Brauner wrote:
> > On Fri, May 15, 2020 at 06:20:55PM -0700, Minchan Kim wrote:
> > > Based on discussion[1], people didn't feel we need t
Hi Christian,
On Tue, May 19, 2020 at 09:45:18AM +0200, Christian Brauner wrote:
> On Fri, May 15, 2020 at 06:20:55PM -0700, Minchan Kim wrote:
> > Based on discussion[1], people didn't feel we need to support both
> > pid and pidfd for every new coming API[2] so this patch keeps
Hi Andrew,
On Mon, May 18, 2020 at 04:06:56PM -0700, Andrew Morton wrote:
> On Mon, 18 May 2020 14:13:50 -0700 Minchan Kim wrote:
>
> > Andrew, I sent this patch without folding into previous syscall introducing
> > patches because it could be arguable. If you want to
On Mon, May 18, 2020 at 12:22:56PM -0700, Suren Baghdasaryan wrote:
> On Fri, May 15, 2020 at 6:21 PM Minchan Kim wrote:
> >
> > Based on discussion[1], people didn't feel we need to support both
> > pid and pidfd for every new coming API[2] so this patch keeps only
>
-3359-c4ab-fbec-859e8186c...@virtuozzo.com/
Signed-off-by: Minchan Kim
---
mm/madvise.c | 42 +-
1 file changed, 13 insertions(+), 29 deletions(-)
diff --git a/mm/madvise.c b/mm/madvise.c
index d3fbbe52d230..35c9b220146a 100644
--- a/mm/madvise.c
+++ b/mm
Hi Christian,
On Sat, May 09, 2020 at 02:48:17PM +0200, Christian Brauner wrote:
> On Fri, May 08, 2020 at 04:04:15PM -0700, Andrew Morton wrote:
> > On Fri, 8 May 2020 11:36:53 -0700 Minchan Kim wrote:
> >
> > >
> > > ...
> > >
> > > P
On Tue, Mar 10, 2020 at 05:42:51PM -0700, Minchan Kim wrote:
> On Fri, Mar 06, 2020 at 12:14:19PM +0100, Vlastimil Babka wrote:
> > On 3/2/20 8:36 PM, Minchan Kim wrote:
> > > There is a demand[1] to support pid as well pidfd for process_madvise
> > > to reduce unnec
On Thu, Mar 12, 2020 at 01:23:39PM -0700, Minchan Kim wrote:
> On Thu, Mar 12, 2020 at 01:40:26PM +0100, Vlastimil Babka wrote:
> > On 3/10/20 11:20 PM, Minchan Kim wrote:
> > > On Thu, Mar 05, 2020 at 07:15:10PM +0100, Vlastimil Babka wrote:
> > >> On 3/2
On Thu, Mar 05, 2020 at 04:48:12PM +0100, Vlastimil Babka wrote:
> On 3/2/20 8:36 PM, Minchan Kim wrote:
> > In upcoming patches, do_madvise will be called from external process
> > context so we shouldn't asssume "current" is always hinted process's
> > task_st
CALL_DEFINEx'
>66 | COMPAT_SYSCALL_DEFINEx(6, _##name, __VA_ARGS__)
> | ^~
> mm/madvise.c:1314:1: note: in expansion of macro 'COMPAT_SYSCALL_DEFINE6'
> 1314 | COMPAT_SYSCALL_DEFINE6(process_madvise, int, which, compat_pid_t,
> upid,
> | ^~~~~~
> make[2]: *** [sc
On Tue, Oct 15, 2019 at 09:39:35AM +0200, Vitaly Wool wrote:
> Hi Minchan,
>
> On Mon, Oct 14, 2019 at 6:41 PM Minchan Kim wrote:
> >
> > On Thu, Oct 10, 2019 at 11:04:14PM +0300, Vitaly Wool wrote:
> > > The coming patchset is a new take on the old issue: ZRAM can
On Thu, Oct 10, 2019 at 11:04:14PM +0300, Vitaly Wool wrote:
> The coming patchset is a new take on the old issue: ZRAM can currently be
> used only with zsmalloc even though this may not be the optimal combination
> for some configurations. The previous (unsuccessful) attempt dates back to
>
On Thu, Oct 10, 2019 at 03:17:47PM -0400, Johannes Weiner wrote:
> On Thu, Oct 10, 2019 at 08:21:34AM -0700, Minchan Kim wrote:
> > From: Minchan Kim
> >
> > If block device supports rw_page operation, it doesn't submit bio
> > so annotation in submit_bio for
From: Minchan Kim
If block device supports rw_page operation, it doesn't submit bio
so annotation in submit_bio for refault stall doesn't work.
It happens with zram in android, especially swap read path which
could consume CPU cycle for decompress. It is also a problem for
zswap which uses
On Wed, Oct 09, 2019 at 03:25:10PM -0700, Shakeel Butt wrote:
> On Wed, Oct 9, 2019 at 2:19 PM Minchan Kim wrote:
> >
> > From: Minchan Kim
> >
> > If block device supports rw_page operation, it doesn't submit bio
> > so annotation in submit_bio for refault s
From: Minchan Kim
If block device supports rw_page operation, it doesn't submit bio
so annotation in submit_bio for refault stall doesn't work.
It happens with zram in android, especially swap read path which
could consume CPU cycle for decompress.
Annotate bdev_read_page() to account
On Mon, Sep 09, 2019 at 10:40:29AM +0200, Michal Hocko wrote:
> On Thu 05-09-19 01:44:12, sunqiuyang wrote:
> > >
> > >
> > > From: Michal Hocko [mho...@kernel.org]
> > > Sent: Wednesday, September 04, 2019 20:52
> > > To: sunqiuyang
> > > Cc:
On Tue, Sep 03, 2019 at 04:27:46PM +0800, sunqiuyang wrote:
> From: Qiuyang Sun
>
> Currently, after a page is migrated, it
> 1) has its PG_isolated flag cleared in move_to_new_page(), and
> 2) is deleted from its LRU list (cc->migratepages) in unmap_and_move().
> However, between steps 1) and
On Tue, Aug 06, 2019 at 10:04:15AM +0200, Michal Hocko wrote:
> On Tue 06-08-19 15:05:47, kernel test robot wrote:
> > Greeting,
> >
> > FYI, we noticed a -4.1% regression of will-it-scale.per_process_ops due to
> > commit:
>
> I have to confess I cannot make much sense from numbers because
On Wed, Jul 31, 2019 at 09:21:01AM +0200, Michal Hocko wrote:
> On Wed 31-07-19 14:44:47, Minchan Kim wrote:
> > On Tue, Jul 30, 2019 at 02:57:51PM +0200, Michal Hocko wrote:
> > > [Cc Nick - the email thread starts
> > > http://lkml.kernel.org/r/20190729071037.
On Mon, Aug 05, 2019 at 10:34:41AM -0700, Henry Burns wrote:
> On Sun, Aug 4, 2019 at 9:28 PM Minchan Kim wrote:
> >
> > Hi Henry,
> >
> > On Thu, Aug 01, 2019 at 06:53:32PM -0700, Henry Burns wrote:
> > > In zs_destroy_pool() we call flush_work(>free_wor
Hi Henry,
On Thu, Aug 01, 2019 at 06:53:32PM -0700, Henry Burns wrote:
> In zs_destroy_pool() we call flush_work(>free_work). However, we
> have no guarantee that migration isn't happening in the background
> at that time.
>
> Since migration can't directly free pages, it relies on free_work
>
the
> sequence to a new putback_zspage_deferred() function which both
> zs_page_migrate() and zs_page_putback() call.
>
> Signed-off-by: Henry Burns
Cc: [4.8+]
Acked-by: Minchan Kim
Below a just trivial:
> ---
> mm/zsmalloc.c | 30 --
> 1
37c60
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1564585460
>
> The bug was bisected to:
>
> commit 06a833a1167e9cbb43a9a4317ec24585c6ec85cb
> Author: Minchan Kim
> Date: Sat Jul 27 05:12:38 2019 +
>
> mm: introduce MADV_PAGEOUT
>
On Wed, Jul 31, 2019 at 02:18:00PM -0400, Qian Cai wrote:
> On Wed, 2019-07-31 at 12:09 -0400, Qian Cai wrote:
> > On Wed, 2019-07-31 at 14:34 +0900, Minchan Kim wrote:
> > > On Tue, Jul 30, 2019 at 12:25:28PM -0400, Qian Cai wrote:
> > > > OOM workloads with
On Tue, Jul 30, 2019 at 12:42:07PM -0700, Andrew Morton wrote:
> On Mon, 29 Jul 2019 17:20:52 +0900 Minchan Kim wrote:
>
> > > > @@ -1022,7 +1023,16 @@ static unsigned long zap_pte_range(struct
> > > > mmu_gather *tlb,
> > >
e still need it and why
> SetPageReferenced cannot be used instead. More below.]
>
> On Tue 30-07-19 21:39:35, Minchan Kim wrote:
> > On Tue, Jul 30, 2019 at 02:32:37PM +0200, Michal Hocko wrote:
> > > On Tue 30-07-19 21:11:10, Minchan Kim wrote:
> > > > On Mon, Jul
t+0x18/0x38
Thanks for the testing! No surprise the patch make some bugs because
it's rather tricky.
Could you test this patch?
>From b31667210dd747f4d8aeb7bdc1f5c14f1f00bff5 Mon Sep 17 00:00:00 2001
From: Minchan Kim
Date: Wed, 31 Jul 2019 14:18:01 +0900
Subject: [PATCH] mm: decrease NR_ISOALTED
On Tue, Jul 30, 2019 at 02:32:37PM +0200, Michal Hocko wrote:
> On Tue 30-07-19 21:11:10, Minchan Kim wrote:
> > On Mon, Jul 29, 2019 at 10:35:15AM +0200, Michal Hocko wrote:
> > > On Mon 29-07-19 17:20:52, Minchan Kim wrote:
> > > > On Mon, Jul 29, 2019 at 09:45:
On Mon, Jul 29, 2019 at 10:35:15AM +0200, Michal Hocko wrote:
> On Mon 29-07-19 17:20:52, Minchan Kim wrote:
> > On Mon, Jul 29, 2019 at 09:45:23AM +0200, Michal Hocko wrote:
> > > On Mon 29-07-19 16:10:37, Minchan Kim wrote:
> > > > In our testing(carmera re
On Mon, Jul 29, 2019 at 09:45:23AM +0200, Michal Hocko wrote:
> On Mon 29-07-19 16:10:37, Minchan Kim wrote:
> > In our testing(carmera recording), Miguel and Wei found unmap_page_range
> > takes above 6ms with preemption disabled easily. When I see that, the
> > reason i
in the time because it could make frame drop or glitch audio problem.
This patch adds preemption point like coyp_pte_range.
Reported-by: Miguel de Dios
Reported-by: Wei Wang
Cc: Michal Hocko
Cc: Johannes Weiner
Cc: Mel Gorman
Signed-off-by: Minchan Kim
---
mm/memory.c | 19 ---
1
Hi Andrew,
It's the resend with fixing build errors kbuildbot reported.
Please take it this version to get more test coverage.
Thanks.
On Fri, Jul 26, 2019 at 11:34:30AM +0900, Minchan Kim wrote:
> This patch is part of previous series:
> https://lore.kernel.org/lkml/20190531064313.19
rg
* v1 - http://lore.kernel.org/lkml/20190603053655.127730-1-minc...@kernel.org
Minchan Kim (5):
mm: introduce MADV_COLD
mm: change PAGEREF_RECLAIM_CLEAN with PAGE_REFRECLAIM
mm: account nr_isolated_xxx in [isolate|putback]_lru_page
mm: introduce MADV_PAGEOUT
mm: factor out common parts
There are many common parts between MADV_COLD and MADV_PAGEOUT.
This patch factor them out to save code duplication.
Suggested-by: Johannes Weiner
Acked-by: Michal Hocko
Signed-off-by: Minchan Kim
---
mm/madvise.c | 194 ---
1 file changed, 46
for next patch.
* RFCv1
* use ignore_referecnes as parameter name - hannes
Acked-by: Michal Hocko
Acked-by: Johannes Weiner
Signed-off-by: Minchan Kim
---
mm/vmscan.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 82e1e229eef21
] https://lore.kernel.org/lkml/20190710194719.gs29...@dhcp22.suse.cz/
Cc: linux-a...@vger.kernel.org
Cc: James E.J. Bottomley
Cc: Richard Henderson
Cc: Ralf Baechle
Cc: Chris Zankel
Reported-by: kbuild test robot
Acked-by: Michal Hocko
Signed-off-by: Minchan Kim
---
arch/alpha/include/uapi/asm
://lkml.kernel.org/r/20190531165927.ga20...@cmpxchg.org
Suggested-by: Johannes Weiner
Acked-by: Johannes Weiner
Acked-by: Michal Hocko
Signed-off-by: Minchan Kim
---
mm/compaction.c | 2 --
mm/gup.c| 7 +--
mm/khugepaged.c | 3 ---
mm/memory-failure.c | 3 ---
mm/memory_hotplug.c
Revise the description - surenb
* Renaming from MADV_WARM to MADV_COOL - surenb
Cc: linux-a...@vger.kernel.org
Cc: James E.J. Bottomley
Cc: Richard Henderson
Cc: Ralf Baechle
Cc: Chris Zankel
Reported-by: kbuild test robot
Acked-by: Michal Hocko
Acked-by: Johannes Weiner
Signed-off-by: Minch
Hi Andrew,
On Wed, Jul 24, 2019 at 07:32:49PM -0700, Andrew Morton wrote:
> On Tue, 16 Jul 2019 15:24:36 -0600 Yu Zhao wrote:
>
> > This is a cleanup patch that replaces two historical uses of
> > list_move_tail() with relatively recent add_page_to_lru_list_tail().
> >
>
> Looks OK to me.
>
://lkml.kernel.org/r/20190531165927.ga20...@cmpxchg.org
Suggested-by: Johannes Weiner
Acked-by: Johannes Weiner
Acked-by: Michal Hocko
Signed-off-by: Minchan Kim
---
mm/compaction.c | 2 --
mm/gup.c| 7 +--
mm/khugepaged.c | 3 ---
mm/memory-failure.c | 3 ---
mm/memory_hotplug.c
There are many common parts between MADV_COLD and MADV_PAGEOUT.
This patch factor them out to save code duplication.
Suggested-by: Johannes Weiner
Acked-by: Michal Hocko
Signed-off-by: Minchan Kim
---
mm/madvise.c | 193 ---
1 file changed, 46
factoring out isolate logic - hannes
* RFCv1
* rename from MADV_COLD to MADV_PAGEOUT - hannes
* bail out if process is being killed - Hillf
* fix reclaim_pages bugs - Hillf
[1] https://lore.kernel.org/lkml/20190710194719.gs29...@dhcp22.suse.cz/
Acked-by: Michal Hocko
Signed-off-by: Minchan Kim
for next patch.
* RFCv1
* use ignore_referecnes as parameter name - hannes
Acked-by: Michal Hocko
Acked-by: Johannes Weiner
Signed-off-by: Minchan Kim
---
mm/vmscan.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index f4fd02ae233ef
- http://lore.kernel.org/lkml/20190711012528.176050-1-minc...@kernel.org
* v3 - http://lore.kernel.org/lkml/20190627115405.255259-1-minc...@kernel.org
* v2 - http://lore.kernel.org/lkml/20190610111252.239156-1-minc...@kernel.org
* v1 - http://lore.kernel.org/lkml/20190603053655.127730-1-minc...@kernel.org
Minchan
V_COOL to MADV_COLD - hannes
* internal review
* use clear_page_youn in deactivate_page - joelaf
* Revise the description - surenb
* Renaming from MADV_WARM to MADV_COOL - surenb
Acked-by: Michal Hocko
Acked-by: Johannes Weiner
Signed-off-by: Minchan Kim
---
include/linux/
Hi Joel,
On Mon, Jul 22, 2019 at 05:32:04PM -0400, Joel Fernandes (Google) wrote:
> The page_idle tracking feature currently requires looking up the pagemap
> for a process followed by interacting with /sys/kernel/mm/page_idle.
> This is quite cumbersome and can be error-prone too. If between
On Wed, Jul 17, 2019 at 03:14:57PM -0700, Suren Baghdasaryan wrote:
> Hi Minchan,
> Couple comments inline.
> Thanks!
>
> On Sun, Jul 14, 2019 at 4:34 PM Minchan Kim wrote:
> >
> > When a process expects no accesses to a certain memory range, it could
> > give a
://lkml.kernel.org/r/20190531165927.ga20...@cmpxchg.org
Suggested-by: Johannes Weiner
Acked-by: Johannes Weiner
Acked-by: Michal Hocko
Signed-off-by: Minchan Kim
---
mm/compaction.c | 2 --
mm/gup.c| 7 +--
mm/khugepaged.c | 3 ---
mm/memory-failure.c | 3 ---
mm/memory_hotplug.c
There are many common parts between MADV_COLD and MADV_PAGEOUT.
This patch factor them out to save code duplication.
Acked-by: Michal Hocko
Signed-off-by: Minchan Kim
---
mm/madvise.c | 193 ---
1 file changed, 46 insertions(+), 147 deletions
factoring out isolate logic - hannes
* RFCv1
* rename from MADV_COLD to MADV_PAGEOUT - hannes
* bail out if process is being killed - Hillf
* fix reclaim_pages bugs - Hillf
[1] https://lore.kernel.org/lkml/20190710194719.gs29...@dhcp22.suse.cz/
Acked-by: Michal Hocko
Signed-off-by: Minchan Kim
for next patch.
* RFCv1
* use ignore_referecnes as parameter name - hannes
Acked-by: Michal Hocko
Acked-by: Johannes Weiner
Signed-off-by: Minchan Kim
---
mm/vmscan.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index a0301edd8d03
rg/lkml/20190627115405.255259-1-minc...@kernel.org
* v2 - http://lore.kernel.org/lkml/20190610111252.239156-1-minc...@kernel.org
* v1 - http://lore.kernel.org/lkml/20190603053655.127730-1-minc...@kernel.org
Minchan Kim (5):
mm: introduce MADV_COLD
mm: change PAGEREF_RECLAIM_CLEAN with PAGE_REF
e_youn in deactivate_page - joelaf
* Revise the description - surenb
* Renaming from MADV_WARM to MADV_COOL - surenb
Acked-by: Michal Hocko
Acked-by: Johannes Weiner
Signed-off-by: Minchan Kim
---
include/linux/swap.h | 1 +
include/uapi/asm-generic/mman-common.h | 1
On Fri, Jul 12, 2019 at 09:58:09AM -0400, Johannes Weiner wrote:
> On Fri, Jul 12, 2019 at 02:18:28PM +0900, Minchan Kim wrote:
> > Hi Johannes,
> >
> > On Thu, Jul 11, 2019 at 02:42:23PM -0400, Johannes Weiner wrote:
> > > On Thu, Jul 11, 2019 at 10:25
Hi Johannes,
On Thu, Jul 11, 2019 at 02:42:23PM -0400, Johannes Weiner wrote:
> On Thu, Jul 11, 2019 at 10:25:28AM +0900, Minchan Kim wrote:
> > @@ -480,6 +482,198 @@ static long madvise_cold(struct vm_area_struct *vma,
> > return 0;
> > }
> >
> > +sta
to MADV_PAGEOUT - hannes
* bail out if process is being killed - Hillf
* fix reclaim_pages bugs - Hillf
[1] https://lore.kernel.org/lkml/20190710194719.gs29...@dhcp22.suse.cz/
Acked-by: Michal Hocko
Signed-off-by: Minchan Kim
---
include/linux/swap.h | 1 +
include/uapi/asm-generic
://lkml.kernel.org/r/20190531165927.ga20...@cmpxchg.org
Acked-by: Michal Hocko
Suggested-by: Johannes Weiner
Signed-off-by: Minchan Kim
---
mm/compaction.c | 2 --
mm/gup.c| 7 +--
mm/khugepaged.c | 3 ---
mm/memory-failure.c | 3 ---
mm/memory_hotplug.c | 4
mm/mempolicy.c
rg/lkml/20190610111252.239156-1-minc...@kernel.org
* v1 - http://lore.kernel.org/lkml/20190603053655.127730-1-minc...@kernel.org
Minchan Kim (4):
mm: introduce MADV_COLD
mm: change PAGEREF_RECLAIM_CLEAN with PAGE_REFRECLAIM
mm: account nr_isolated_xxx in [isolate|putback]_lru_page
mm: in
e_youn in deactivate_page - joelaf
* Revise the description - surenb
* Renaming from MADV_WARM to MADV_COOL - surenb
Acked-by: Michal Hocko
Signed-off-by: Minchan Kim
---
include/linux/swap.h | 1 +
include/uapi/asm-generic/mman-common.h | 1 +
mm/inte
for next patch.
* RFCv1
* use ignore_referecnes as parameter name - hannes
Acked-by: Michal Hocko
Acked-by: Johannes Weiner
Signed-off-by: Minchan Kim
---
mm/vmscan.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index a0301edd8d03
On Wed, Jul 10, 2019 at 09:47:19PM +0200, Michal Hocko wrote:
> On Wed 10-07-19 20:53:56, Minchan Kim wrote:
> > On Wed, Jul 10, 2019 at 01:16:22PM +0200, Michal Hocko wrote:
> > > On Wed 10-07-19 19:48:09, Minchan Kim wrote:
> > > > On Tue, Jul 09, 2019 at 11:55:
On Wed, Jul 10, 2019 at 01:16:22PM +0200, Michal Hocko wrote:
> On Wed 10-07-19 19:48:09, Minchan Kim wrote:
> > On Tue, Jul 09, 2019 at 11:55:19AM +0200, Michal Hocko wrote:
> [...]
> > > I am still not convinced about the SWAP_CLUSTER_MAX batching and the
> > > u
On Tue, Jul 09, 2019 at 04:10:19PM +0200, Michal Hocko wrote:
> On Thu 27-06-19 20:54:05, Minchan Kim wrote:
> > Now, there are common part among MADV_COLD|PAGEOUT|FREE to reset
> > access/dirty bit resetting or split the THP page to handle part
> > of subpages in the THP pa
On Tue, Jul 09, 2019 at 11:55:19AM +0200, Michal Hocko wrote:
> On Thu 27-06-19 20:54:04, Minchan Kim wrote:
> > When a process expects no accesses to a certain memory range
> > for a long time, it could hint kernel that the pages can be
> > reclaimed instantly but dat
m: get rid of 'vmalloc_info' from
> /proc/meminfo")), let's reuse it for showing the actual
> physical memory consumption of vmalloc().
>
> Signed-off-by: Roman Gushchin
> Acked-by: Johannes Weiner
> Acked-by: Vlastimil Babka
Acked-by: Minchan Kim
How it's going on?
Android
Hi Folks,
Do you guys have comments? I think it would be long enough to be
pending. If there is no further comments, I want to ask to merge.
Thanks.
On Thu, Jun 27, 2019 at 08:54:00PM +0900, Minchan Kim wrote:
> This patch is part of previous series:
> https://lore.kernel.or
On Fri, Jun 28, 2019 at 08:56:18AM +0900, Minchan Kim wrote:
> On Thu, Jun 27, 2019 at 04:53:02PM +0200, Michal Hocko wrote:
> > On Thu 27-06-19 07:36:50, Dave Hansen wrote:
> > [...]
> > > For MADV_COLD, if we defined it like this, I think we could use it for
> > >
On Fri, Jun 28, 2019 at 10:32:01AM -0400, Johannes Weiner wrote:
> On Fri, Jun 28, 2019 at 07:16:27PM +0800, Kuo-Hsin Yang wrote:
> > When file refaults are detected and there are many inactive file pages,
> > the system never reclaim anonymous pages, the file pages are dropped
> > aggressively
On Fri, Jun 28, 2019 at 10:22:52AM -0400, Johannes Weiner wrote:
> Hi Minchan,
>
> On Fri, Jun 28, 2019 at 03:51:38PM +0900, Minchan Kim wrote:
> > On Thu, Jun 27, 2019 at 02:41:23PM -0400, Johannes Weiner wrote:
> > > On Wed, Jun 19, 2019 at 04:08:35PM +0800, Kuo-Hsin Y
Hi Kuo-Hsin,
On Wed, Jun 19, 2019 at 04:08:35PM +0800, Kuo-Hsin Yang wrote:
> When file refaults are detected and there are many inactive file pages,
> the system never reclaim anonymous pages, the file pages are dropped
> aggressively when there are still a lot of cold anonymous pages and
>
Hi Johannes,
On Thu, Jun 27, 2019 at 02:41:23PM -0400, Johannes Weiner wrote:
> On Wed, Jun 19, 2019 at 04:08:35PM +0800, Kuo-Hsin Yang wrote:
> > When file refaults are detected and there are many inactive file pages,
> > the system never reclaim anonymous pages, the file pages are dropped
> >
On Thu, Jun 27, 2019 at 04:53:02PM +0200, Michal Hocko wrote:
> On Thu 27-06-19 07:36:50, Dave Hansen wrote:
> [...]
> > For MADV_COLD, if we defined it like this, I think we could use it for
> > both purposes (demotion and LRU movement):
> >
> > Pages in the specified regions will be treated
On Thu, Jun 27, 2019 at 06:13:36AM -0700, Dave Hansen wrote:
> On 6/27/19 4:54 AM, Minchan Kim wrote:
> > This patch introduces the new MADV_COLD hint to madvise(2) syscall.
> > MADV_COLD can be used by a process to mark a memory range as not expected
> > to be used in the
On Thu, Jun 27, 2019 at 09:06:01PM +0300, Kirill A. Shutemov wrote:
> On Thu, Jun 27, 2019 at 08:54:00PM +0900, Minchan Kim wrote:
> > - Problem
> >
> > Naturally, cached apps were dominant consumers of memory on the system.
> > However, they were not significant co
for next patch.
* RFCv1
* use ignore_referecnes as parameter name - hannes
Acked-by: Michal Hocko
Acked-by: Johannes Weiner
Signed-off-by: Minchan Kim
---
mm/vmscan.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 9e3292ee5c7c
should be reclaimed immediately; MADV_COLD is similar to MADV_FREE in a way
that it hints the kernel that memory region is not currently needed and
should be reclaimed when memory pressure rises.
Minchan Kim (5):
mm: introduce MADV_COLD
mm: change PAGEREF_RECLAIM_CLEAN with PAGE_REFRECLA
Now, there are common part among MADV_COLD|PAGEOUT|FREE to reset
access/dirty bit resetting or split the THP page to handle part
of subpages in the THP page. This patch factor out the common part.
Signed-off-by: Minchan Kim
---
include/linux/huge_mm.h | 3 -
mm/huge_memory.c| 74
://lkml.kernel.org/r/20190531165927.ga20...@cmpxchg.org
Suggested-by: Johannes Weiner
Signed-off-by: Minchan Kim
---
mm/compaction.c | 2 --
mm/gup.c| 7 +--
mm/khugepaged.c | 3 ---
mm/memory-failure.c | 3 ---
mm/memory_hotplug.c | 4
mm/mempolicy.c | 6 +-
mm
factoring out isolate logic - hannes
* RFCv1
* rename from MADV_COLD to MADV_PAGEOUT - hannes
* bail out if process is being killed - Hillf
* fix reclaim_pages bugs - Hillf
Signed-off-by: Minchan Kim
---
include/linux/swap.h | 1 +
include/uapi/asm-generic/mman-common.h | 1
RFCv1
* renaming from MADV_COOL to MADV_COLD - hannes
* internal review
* use clear_page_youn in deactivate_page - joelaf
* Revise the description - surenb
* Renaming from MADV_WARM to MADV_COOL - surenb
Signed-off-by: Minchan Kim
---
include/linux/swap.h | 1 +
includ
On Thu, Jun 20, 2019 at 11:22:09AM +0200, Michal Hocko wrote:
> On Thu 20-06-19 17:40:40, Minchan Kim wrote:
> > > > > Pushing out a shared page cache
> > > > > is possible even now but this interface gives a much easier tool to
> > > > > evict shar
On Thu, Jun 20, 2019 at 09:08:54AM +0200, Michal Hocko wrote:
> On Thu 20-06-19 09:06:51, Minchan Kim wrote:
> > On Wed, Jun 19, 2019 at 02:56:12PM +0200, Michal Hocko wrote:
> [...]
> > > Why cannot we reuse a large part of that code and differ essentially on
> >
On Thu, Jun 20, 2019 at 09:04:44AM +0200, Michal Hocko wrote:
> On Thu 20-06-19 13:16:20, Minchan Kim wrote:
> > On Wed, Jun 19, 2019 at 03:24:50PM +0200, Michal Hocko wrote:
> > > On Mon 10-06-19 20:12:51, Minchan Kim wrote:
> > > [...]
> > > > +static i
On Wed, Jun 19, 2019 at 01:13:40PM -0400, Joel Fernandes wrote:
< snip >
Ccing Vladimir
> > > > > > +static int madvise_cold_pte_range(pmd_t *pmd, unsigned long addr,
> > > > > > + unsigned long end, struct mm_walk *walk)
> > > > > > +{
> > > > > > + pte_t *orig_pte,
On Wed, Jun 19, 2019 at 03:24:50PM +0200, Michal Hocko wrote:
> On Mon 10-06-19 20:12:51, Minchan Kim wrote:
> [...]
> > +static int madvise_pageout_pte_range(pmd_t *pmd, unsigned long addr,
> > + unsigned long end, struct mm_walk *walk)
>
> Again
On Wed, Jun 19, 2019 at 02:56:12PM +0200, Michal Hocko wrote:
> On Mon 10-06-19 20:12:48, Minchan Kim wrote:
> > When a process expects no accesses to a certain memory range, it could
> > give a hint to kernel that the pages can be reclaimed when memory pressure
> > ha
On Wed, Jun 19, 2019 at 02:27:50PM +0200, Michal Hocko wrote:
> On Mon 10-06-19 20:12:47, Minchan Kim wrote:
> > This patch is part of previous series:
> > https://lore.kernel.org/lkml/20190531064313.193437-1-minc...@kernel.org/T/#u
> > Originally, it was created for ext
On Wed, Jun 12, 2019 at 01:21:04PM -0400, Joel Fernandes wrote:
> On Mon, Jun 10, 2019 at 07:09:04PM +0900, Minchan Kim wrote:
> > Hi Joel,
> >
> > On Tue, Jun 04, 2019 at 04:38:41PM -0400, Joel Fernandes wrote:
> > > On Mon, Jun 03, 2019 at 02:36:52PM +0900, M
On Mon, Jun 10, 2019 at 11:03:00AM -0700, Dave Hansen wrote:
> I'd really love to see the manpages for these new flags. The devil is
> in the details of our promises to userspace.
I'm waiting comments from reviewers since I have fixed what they point
out from the previous version.
I will add
On Mon, Jun 10, 2019 at 12:39:46PM +0200, Michal Hocko wrote:
> On Mon 10-06-19 18:42:22, Minchan Kim wrote:
> > On Tue, Jun 04, 2019 at 02:28:06PM +0200, Michal Hocko wrote:
> > > On Thu 30-05-19 11:42:29, Minchan Kim wrote:
> > > > On Tue, May 28, 2019 at 05:14:
Now, there are common part among MADV_COLD|PAGEOUT|FREE to reset
access/dirty bit resetting or split the THP page to handle part
of subpages in the THP page. This patch factor out the common part.
Cc: "Kirill A. Shutemov"
Cc: Christopher Lameter
Signed-off-by: Minchan Kim
---
inc
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