* [PATCH] mm: Do not allocate duplicate stack variables in shrink_page_list()
@ 2019-01-31 15:37 Kirill Tkhai
2019-01-31 16:52 ` Daniel Jordan
2019-02-01 11:26 ` Michal Hocko
0 siblings, 2 replies; 4+ messages in thread
From: Kirill Tkhai @ 2019-01-31 15:37 UTC (permalink / raw)
To: akpm, mhocko, hannes, ktkhai, linux-mm, linux-kernel
On path shrink_inactive_list() ---> shrink_page_list()
we allocate stack variables for the statistics twice.
This is completely useless, and this just consumes stack
much more, then we really need.
The patch kills duplicate stack variables from shrink_page_list(),
and this reduce stack usage and object file size significantly:
Stack usage:
Before: vmscan.c:1122:22:shrink_page_list 648 static
After: vmscan.c:1122:22:shrink_page_list 616 static
Size of vmscan.o:
text data bss dec hex filename
Before: 56866 4720 128 61714 f112 mm/vmscan.o
After: 56770 4720 128 61618 f0b2 mm/vmscan.o
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
---
mm/vmscan.c | 44 ++++++++++++++------------------------------
1 file changed, 14 insertions(+), 30 deletions(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index dd9554f5d788..54a389fd91e2 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1128,16 +1128,9 @@ static unsigned long shrink_page_list(struct list_head *page_list,
{
LIST_HEAD(ret_pages);
LIST_HEAD(free_pages);
- int pgactivate = 0;
- unsigned nr_unqueued_dirty = 0;
- unsigned nr_dirty = 0;
- unsigned nr_congested = 0;
unsigned nr_reclaimed = 0;
- unsigned nr_writeback = 0;
- unsigned nr_immediate = 0;
- unsigned nr_ref_keep = 0;
- unsigned nr_unmap_fail = 0;
+ memset(stat, 0, sizeof(*stat));
cond_resched();
while (!list_empty(page_list)) {
@@ -1181,10 +1174,10 @@ static unsigned long shrink_page_list(struct list_head *page_list,
*/
page_check_dirty_writeback(page, &dirty, &writeback);
if (dirty || writeback)
- nr_dirty++;
+ stat->nr_dirty++;
if (dirty && !writeback)
- nr_unqueued_dirty++;
+ stat->nr_unqueued_dirty++;
/*
* Treat this page as congested if the underlying BDI is or if
@@ -1196,7 +1189,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
if (((dirty || writeback) && mapping &&
inode_write_congested(mapping->host)) ||
(writeback && PageReclaim(page)))
- nr_congested++;
+ stat->nr_congested++;
/*
* If a page at the tail of the LRU is under writeback, there
@@ -1245,7 +1238,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
if (current_is_kswapd() &&
PageReclaim(page) &&
test_bit(PGDAT_WRITEBACK, &pgdat->flags)) {
- nr_immediate++;
+ stat->nr_immediate++;
goto activate_locked;
/* Case 2 above */
@@ -1263,7 +1256,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
* and it's also appropriate in global reclaim.
*/
SetPageReclaim(page);
- nr_writeback++;
+ stat->nr_writeback++;
goto activate_locked;
/* Case 3 above */
@@ -1283,7 +1276,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
case PAGEREF_ACTIVATE:
goto activate_locked;
case PAGEREF_KEEP:
- nr_ref_keep++;
+ stat->nr_ref_keep++;
goto keep_locked;
case PAGEREF_RECLAIM:
case PAGEREF_RECLAIM_CLEAN:
@@ -1348,7 +1341,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
if (unlikely(PageTransHuge(page)))
flags |= TTU_SPLIT_HUGE_PMD;
if (!try_to_unmap(page, flags)) {
- nr_unmap_fail++;
+ stat->nr_unmap_fail++;
goto activate_locked;
}
}
@@ -1496,7 +1489,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
VM_BUG_ON_PAGE(PageActive(page), page);
if (!PageMlocked(page)) {
SetPageActive(page);
- pgactivate++;
+ stat->nr_activate++;
count_memcg_page_event(page, PGACTIVATE);
}
keep_locked:
@@ -1511,18 +1504,8 @@ static unsigned long shrink_page_list(struct list_head *page_list,
free_unref_page_list(&free_pages);
list_splice(&ret_pages, page_list);
- count_vm_events(PGACTIVATE, pgactivate);
-
- if (stat) {
- stat->nr_dirty = nr_dirty;
- stat->nr_congested = nr_congested;
- stat->nr_unqueued_dirty = nr_unqueued_dirty;
- stat->nr_writeback = nr_writeback;
- stat->nr_immediate = nr_immediate;
- stat->nr_activate = pgactivate;
- stat->nr_ref_keep = nr_ref_keep;
- stat->nr_unmap_fail = nr_unmap_fail;
- }
+ count_vm_events(PGACTIVATE, stat->nr_activate);
+
return nr_reclaimed;
}
@@ -1534,6 +1517,7 @@ unsigned long reclaim_clean_pages_from_list(struct zone *zone,
.priority = DEF_PRIORITY,
.may_unmap = 1,
};
+ struct reclaim_stat dummy_stat;
unsigned long ret;
struct page *page, *next;
LIST_HEAD(clean_pages);
@@ -1547,7 +1531,7 @@ unsigned long reclaim_clean_pages_from_list(struct zone *zone,
}
ret = shrink_page_list(&clean_pages, zone->zone_pgdat, &sc,
- TTU_IGNORE_ACCESS, NULL, true);
+ TTU_IGNORE_ACCESS, &dummy_stat, true);
list_splice(&clean_pages, page_list);
mod_node_page_state(zone->zone_pgdat, NR_ISOLATED_FILE, -ret);
return ret;
@@ -1922,7 +1906,7 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec,
unsigned long nr_scanned;
unsigned long nr_reclaimed = 0;
unsigned long nr_taken;
- struct reclaim_stat stat = {};
+ struct reclaim_stat stat;
int file = is_file_lru(lru);
struct pglist_data *pgdat = lruvec_pgdat(lruvec);
struct zone_reclaim_stat *reclaim_stat = &lruvec->reclaim_stat;
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] mm: Do not allocate duplicate stack variables in shrink_page_list()
2019-01-31 15:37 [PATCH] mm: Do not allocate duplicate stack variables in shrink_page_list() Kirill Tkhai
@ 2019-01-31 16:52 ` Daniel Jordan
2019-02-01 11:26 ` Michal Hocko
1 sibling, 0 replies; 4+ messages in thread
From: Daniel Jordan @ 2019-01-31 16:52 UTC (permalink / raw)
To: Kirill Tkhai; +Cc: akpm, mhocko, hannes, linux-mm, linux-kernel
On Thu, Jan 31, 2019 at 06:37:02PM +0300, Kirill Tkhai wrote:
> On path shrink_inactive_list() ---> shrink_page_list()
> we allocate stack variables for the statistics twice.
> This is completely useless, and this just consumes stack
> much more, then we really need.
>
> The patch kills duplicate stack variables from shrink_page_list(),
> and this reduce stack usage and object file size significantly:
>
> Stack usage:
> Before: vmscan.c:1122:22:shrink_page_list 648 static
> After: vmscan.c:1122:22:shrink_page_list 616 static
>
> Size of vmscan.o:
> text data bss dec hex filename
> Before: 56866 4720 128 61714 f112 mm/vmscan.o
> After: 56770 4720 128 61618 f0b2 mm/vmscan.o
>
> Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
> ---
> mm/vmscan.c | 44 ++++++++++++++------------------------------
> 1 file changed, 14 insertions(+), 30 deletions(-)
> @@ -1534,6 +1517,7 @@ unsigned long reclaim_clean_pages_from_list(struct zone *zone,
> .priority = DEF_PRIORITY,
> .may_unmap = 1,
> };
> + struct reclaim_stat dummy_stat;
> unsigned long ret;
> struct page *page, *next;
> LIST_HEAD(clean_pages);
> @@ -1547,7 +1531,7 @@ unsigned long reclaim_clean_pages_from_list(struct zone *zone,
> }
>
> ret = shrink_page_list(&clean_pages, zone->zone_pgdat, &sc,
> - TTU_IGNORE_ACCESS, NULL, true);
> + TTU_IGNORE_ACCESS, &dummy_stat, true);
> list_splice(&clean_pages, page_list);
> mod_node_page_state(zone->zone_pgdat, NR_ISOLATED_FILE, -ret);
> return ret;
Stack usage stays the same coming from reclaim_clean_pages_from_list, with a
dummy variable added back after many were taken away in 3c710c1ad11b ("mm,
vmscan: extract shrink_page_list...").
But overall seems like a win to me. You can add
Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] mm: Do not allocate duplicate stack variables in shrink_page_list()
2019-01-31 15:37 [PATCH] mm: Do not allocate duplicate stack variables in shrink_page_list() Kirill Tkhai
2019-01-31 16:52 ` Daniel Jordan
@ 2019-02-01 11:26 ` Michal Hocko
2019-02-01 11:59 ` Kirill Tkhai
1 sibling, 1 reply; 4+ messages in thread
From: Michal Hocko @ 2019-02-01 11:26 UTC (permalink / raw)
To: Kirill Tkhai; +Cc: akpm, hannes, linux-mm, linux-kernel
On Thu 31-01-19 18:37:02, Kirill Tkhai wrote:
> On path shrink_inactive_list() ---> shrink_page_list()
> we allocate stack variables for the statistics twice.
> This is completely useless, and this just consumes stack
> much more, then we really need.
>
> The patch kills duplicate stack variables from shrink_page_list(),
> and this reduce stack usage and object file size significantly:
significantly is a bit of an overstatement for 32B saved...
> Stack usage:
> Before: vmscan.c:1122:22:shrink_page_list 648 static
> After: vmscan.c:1122:22:shrink_page_list 616 static
>
> Size of vmscan.o:
> text data bss dec hex filename
> Before: 56866 4720 128 61714 f112 mm/vmscan.o
> After: 56770 4720 128 61618 f0b2 mm/vmscan.o
>
> Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Michal Hocko <mhocko@suse.com>
> ---
> mm/vmscan.c | 44 ++++++++++++++------------------------------
> 1 file changed, 14 insertions(+), 30 deletions(-)
>
> diff --git a/mm/vmscan.c b/mm/vmscan.c
> index dd9554f5d788..54a389fd91e2 100644
> --- a/mm/vmscan.c
> +++ b/mm/vmscan.c
> @@ -1128,16 +1128,9 @@ static unsigned long shrink_page_list(struct list_head *page_list,
> {
> LIST_HEAD(ret_pages);
> LIST_HEAD(free_pages);
> - int pgactivate = 0;
> - unsigned nr_unqueued_dirty = 0;
> - unsigned nr_dirty = 0;
> - unsigned nr_congested = 0;
> unsigned nr_reclaimed = 0;
> - unsigned nr_writeback = 0;
> - unsigned nr_immediate = 0;
> - unsigned nr_ref_keep = 0;
> - unsigned nr_unmap_fail = 0;
>
> + memset(stat, 0, sizeof(*stat));
> cond_resched();
>
> while (!list_empty(page_list)) {
> @@ -1181,10 +1174,10 @@ static unsigned long shrink_page_list(struct list_head *page_list,
> */
> page_check_dirty_writeback(page, &dirty, &writeback);
> if (dirty || writeback)
> - nr_dirty++;
> + stat->nr_dirty++;
>
> if (dirty && !writeback)
> - nr_unqueued_dirty++;
> + stat->nr_unqueued_dirty++;
>
> /*
> * Treat this page as congested if the underlying BDI is or if
> @@ -1196,7 +1189,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
> if (((dirty || writeback) && mapping &&
> inode_write_congested(mapping->host)) ||
> (writeback && PageReclaim(page)))
> - nr_congested++;
> + stat->nr_congested++;
>
> /*
> * If a page at the tail of the LRU is under writeback, there
> @@ -1245,7 +1238,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
> if (current_is_kswapd() &&
> PageReclaim(page) &&
> test_bit(PGDAT_WRITEBACK, &pgdat->flags)) {
> - nr_immediate++;
> + stat->nr_immediate++;
> goto activate_locked;
>
> /* Case 2 above */
> @@ -1263,7 +1256,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
> * and it's also appropriate in global reclaim.
> */
> SetPageReclaim(page);
> - nr_writeback++;
> + stat->nr_writeback++;
> goto activate_locked;
>
> /* Case 3 above */
> @@ -1283,7 +1276,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
> case PAGEREF_ACTIVATE:
> goto activate_locked;
> case PAGEREF_KEEP:
> - nr_ref_keep++;
> + stat->nr_ref_keep++;
> goto keep_locked;
> case PAGEREF_RECLAIM:
> case PAGEREF_RECLAIM_CLEAN:
> @@ -1348,7 +1341,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
> if (unlikely(PageTransHuge(page)))
> flags |= TTU_SPLIT_HUGE_PMD;
> if (!try_to_unmap(page, flags)) {
> - nr_unmap_fail++;
> + stat->nr_unmap_fail++;
> goto activate_locked;
> }
> }
> @@ -1496,7 +1489,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
> VM_BUG_ON_PAGE(PageActive(page), page);
> if (!PageMlocked(page)) {
> SetPageActive(page);
> - pgactivate++;
> + stat->nr_activate++;
> count_memcg_page_event(page, PGACTIVATE);
> }
> keep_locked:
> @@ -1511,18 +1504,8 @@ static unsigned long shrink_page_list(struct list_head *page_list,
> free_unref_page_list(&free_pages);
>
> list_splice(&ret_pages, page_list);
> - count_vm_events(PGACTIVATE, pgactivate);
> -
> - if (stat) {
> - stat->nr_dirty = nr_dirty;
> - stat->nr_congested = nr_congested;
> - stat->nr_unqueued_dirty = nr_unqueued_dirty;
> - stat->nr_writeback = nr_writeback;
> - stat->nr_immediate = nr_immediate;
> - stat->nr_activate = pgactivate;
> - stat->nr_ref_keep = nr_ref_keep;
> - stat->nr_unmap_fail = nr_unmap_fail;
> - }
> + count_vm_events(PGACTIVATE, stat->nr_activate);
> +
> return nr_reclaimed;
> }
>
> @@ -1534,6 +1517,7 @@ unsigned long reclaim_clean_pages_from_list(struct zone *zone,
> .priority = DEF_PRIORITY,
> .may_unmap = 1,
> };
> + struct reclaim_stat dummy_stat;
> unsigned long ret;
> struct page *page, *next;
> LIST_HEAD(clean_pages);
> @@ -1547,7 +1531,7 @@ unsigned long reclaim_clean_pages_from_list(struct zone *zone,
> }
>
> ret = shrink_page_list(&clean_pages, zone->zone_pgdat, &sc,
> - TTU_IGNORE_ACCESS, NULL, true);
> + TTU_IGNORE_ACCESS, &dummy_stat, true);
> list_splice(&clean_pages, page_list);
> mod_node_page_state(zone->zone_pgdat, NR_ISOLATED_FILE, -ret);
> return ret;
> @@ -1922,7 +1906,7 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec,
> unsigned long nr_scanned;
> unsigned long nr_reclaimed = 0;
> unsigned long nr_taken;
> - struct reclaim_stat stat = {};
> + struct reclaim_stat stat;
> int file = is_file_lru(lru);
> struct pglist_data *pgdat = lruvec_pgdat(lruvec);
> struct zone_reclaim_stat *reclaim_stat = &lruvec->reclaim_stat;
>
--
Michal Hocko
SUSE Labs
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] mm: Do not allocate duplicate stack variables in shrink_page_list()
2019-02-01 11:26 ` Michal Hocko
@ 2019-02-01 11:59 ` Kirill Tkhai
0 siblings, 0 replies; 4+ messages in thread
From: Kirill Tkhai @ 2019-02-01 11:59 UTC (permalink / raw)
To: Michal Hocko; +Cc: akpm, hannes, linux-mm, linux-kernel
On 01.02.2019 14:26, Michal Hocko wrote:
> On Thu 31-01-19 18:37:02, Kirill Tkhai wrote:
>> On path shrink_inactive_list() ---> shrink_page_list()
>> we allocate stack variables for the statistics twice.
>> This is completely useless, and this just consumes stack
>> much more, then we really need.
>>
>> The patch kills duplicate stack variables from shrink_page_list(),
>> and this reduce stack usage and object file size significantly:
>
> significantly is a bit of an overstatement for 32B saved...
32/648*100 = 4.93827160493827160400
Almost 5%. I think it's not so bad...
>> Stack usage:
>> Before: vmscan.c:1122:22:shrink_page_list 648 static
>> After: vmscan.c:1122:22:shrink_page_list 616 static
>>
>> Size of vmscan.o:
>> text data bss dec hex filename
>> Before: 56866 4720 128 61714 f112 mm/vmscan.o
>> After: 56770 4720 128 61618 f0b2 mm/vmscan.o
>>
>> Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
>
> Acked-by: Michal Hocko <mhocko@suse.com>
>
>> ---
>> mm/vmscan.c | 44 ++++++++++++++------------------------------
>> 1 file changed, 14 insertions(+), 30 deletions(-)
>>
>> diff --git a/mm/vmscan.c b/mm/vmscan.c
>> index dd9554f5d788..54a389fd91e2 100644
>> --- a/mm/vmscan.c
>> +++ b/mm/vmscan.c
>> @@ -1128,16 +1128,9 @@ static unsigned long shrink_page_list(struct list_head *page_list,
>> {
>> LIST_HEAD(ret_pages);
>> LIST_HEAD(free_pages);
>> - int pgactivate = 0;
>> - unsigned nr_unqueued_dirty = 0;
>> - unsigned nr_dirty = 0;
>> - unsigned nr_congested = 0;
>> unsigned nr_reclaimed = 0;
>> - unsigned nr_writeback = 0;
>> - unsigned nr_immediate = 0;
>> - unsigned nr_ref_keep = 0;
>> - unsigned nr_unmap_fail = 0;
>>
>> + memset(stat, 0, sizeof(*stat));
>> cond_resched();
>>
>> while (!list_empty(page_list)) {
>> @@ -1181,10 +1174,10 @@ static unsigned long shrink_page_list(struct list_head *page_list,
>> */
>> page_check_dirty_writeback(page, &dirty, &writeback);
>> if (dirty || writeback)
>> - nr_dirty++;
>> + stat->nr_dirty++;
>>
>> if (dirty && !writeback)
>> - nr_unqueued_dirty++;
>> + stat->nr_unqueued_dirty++;
>>
>> /*
>> * Treat this page as congested if the underlying BDI is or if
>> @@ -1196,7 +1189,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
>> if (((dirty || writeback) && mapping &&
>> inode_write_congested(mapping->host)) ||
>> (writeback && PageReclaim(page)))
>> - nr_congested++;
>> + stat->nr_congested++;
>>
>> /*
>> * If a page at the tail of the LRU is under writeback, there
>> @@ -1245,7 +1238,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
>> if (current_is_kswapd() &&
>> PageReclaim(page) &&
>> test_bit(PGDAT_WRITEBACK, &pgdat->flags)) {
>> - nr_immediate++;
>> + stat->nr_immediate++;
>> goto activate_locked;
>>
>> /* Case 2 above */
>> @@ -1263,7 +1256,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
>> * and it's also appropriate in global reclaim.
>> */
>> SetPageReclaim(page);
>> - nr_writeback++;
>> + stat->nr_writeback++;
>> goto activate_locked;
>>
>> /* Case 3 above */
>> @@ -1283,7 +1276,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
>> case PAGEREF_ACTIVATE:
>> goto activate_locked;
>> case PAGEREF_KEEP:
>> - nr_ref_keep++;
>> + stat->nr_ref_keep++;
>> goto keep_locked;
>> case PAGEREF_RECLAIM:
>> case PAGEREF_RECLAIM_CLEAN:
>> @@ -1348,7 +1341,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
>> if (unlikely(PageTransHuge(page)))
>> flags |= TTU_SPLIT_HUGE_PMD;
>> if (!try_to_unmap(page, flags)) {
>> - nr_unmap_fail++;
>> + stat->nr_unmap_fail++;
>> goto activate_locked;
>> }
>> }
>> @@ -1496,7 +1489,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
>> VM_BUG_ON_PAGE(PageActive(page), page);
>> if (!PageMlocked(page)) {
>> SetPageActive(page);
>> - pgactivate++;
>> + stat->nr_activate++;
>> count_memcg_page_event(page, PGACTIVATE);
>> }
>> keep_locked:
>> @@ -1511,18 +1504,8 @@ static unsigned long shrink_page_list(struct list_head *page_list,
>> free_unref_page_list(&free_pages);
>>
>> list_splice(&ret_pages, page_list);
>> - count_vm_events(PGACTIVATE, pgactivate);
>> -
>> - if (stat) {
>> - stat->nr_dirty = nr_dirty;
>> - stat->nr_congested = nr_congested;
>> - stat->nr_unqueued_dirty = nr_unqueued_dirty;
>> - stat->nr_writeback = nr_writeback;
>> - stat->nr_immediate = nr_immediate;
>> - stat->nr_activate = pgactivate;
>> - stat->nr_ref_keep = nr_ref_keep;
>> - stat->nr_unmap_fail = nr_unmap_fail;
>> - }
>> + count_vm_events(PGACTIVATE, stat->nr_activate);
>> +
>> return nr_reclaimed;
>> }
>>
>> @@ -1534,6 +1517,7 @@ unsigned long reclaim_clean_pages_from_list(struct zone *zone,
>> .priority = DEF_PRIORITY,
>> .may_unmap = 1,
>> };
>> + struct reclaim_stat dummy_stat;
>> unsigned long ret;
>> struct page *page, *next;
>> LIST_HEAD(clean_pages);
>> @@ -1547,7 +1531,7 @@ unsigned long reclaim_clean_pages_from_list(struct zone *zone,
>> }
>>
>> ret = shrink_page_list(&clean_pages, zone->zone_pgdat, &sc,
>> - TTU_IGNORE_ACCESS, NULL, true);
>> + TTU_IGNORE_ACCESS, &dummy_stat, true);
>> list_splice(&clean_pages, page_list);
>> mod_node_page_state(zone->zone_pgdat, NR_ISOLATED_FILE, -ret);
>> return ret;
>> @@ -1922,7 +1906,7 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec,
>> unsigned long nr_scanned;
>> unsigned long nr_reclaimed = 0;
>> unsigned long nr_taken;
>> - struct reclaim_stat stat = {};
>> + struct reclaim_stat stat;
>> int file = is_file_lru(lru);
>> struct pglist_data *pgdat = lruvec_pgdat(lruvec);
>> struct zone_reclaim_stat *reclaim_stat = &lruvec->reclaim_stat;
>>
>
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2019-02-01 11:59 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-01-31 15:37 [PATCH] mm: Do not allocate duplicate stack variables in shrink_page_list() Kirill Tkhai
2019-01-31 16:52 ` Daniel Jordan
2019-02-01 11:26 ` Michal Hocko
2019-02-01 11:59 ` Kirill Tkhai
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