[PATCH v4 1/8] staging: zcache: introduce zero-filled pages handler

Introduce zero-filled pages handler to capture and handle zero pages. Acked-by: Dan Magenheimer Signed-off-by: Wanpeng Li --- drivers/staging/zcache/zcache-main.c | 26 ++ 1 files changed, 26 insertions(+), 0 deletions(-) diff --git a/drivers/staging/zcache/zcache

[PATCH v4 2/8] staging: zcache: zero-filled pages awareness

, we fill the page frame with zero. Acked-by: Dan Magenheimer Reviewed-by: Konrad Rzeszutek Wilk Signed-off-by: Wanpeng Li --- drivers/staging/zcache/zcache-main.c | 80 - 1 files changed, 68 insertions(+), 12 deletions(-) diff --git a/drivers/staging/zcache

[PATCH v4 0/8] staging: zcache: Support zero-filled pages more efficiently

- zcache_[eph|pers]_zbytes) * 100 / (zcache_[eph|pers]_pageframes * PAGE_SIZE) - memory zcache occupy = zcache_[eph|pers]_zbytes Result: without zero-filled awareness: - fragmentation level: 98% - memory zcache occupy: 238MB with zero-filled awareness: - fragmentation level: 0% - memory zcache occu

[PATCH v4 8/8] staging: zcache: clean TODO list

Cleanup TODO list since support zero-filled pages more efficiently has already done by this patchset. Acked-by: Dan Magenheimer Signed-off-by: Wanpeng Li --- drivers/staging/zcache/TODO |3 +-- 1 files changed, 1 insertions(+), 2 deletions(-) diff --git a/drivers/staging/zcache/TODO b

[PATCH v4 5/8] staging: zcache: fix zcache writeback in debugfs

ttenback_pages seperately, however, corresponding .val = &zcache_zcache_outstanding_writeback_pages and .val = &zcache_zcache_writtenback_pages, which are not correct. Signed-off-by: Wanpeng Li --- drivers/staging/zcache/debug.c |4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-)

[PATCH v4 7/8] staging: zcache: introduce zero-filled page stat count

Introduce zero-filled page statistics to monitor the number of zero-filled pages. Acked-by: Dan Magenheimer Signed-off-by: Wanpeng Li --- drivers/staging/zcache/debug.h | 15 +++ drivers/staging/zcache/zcache-main.c |5 + 2 files changed, 20 insertions(+), 0

[PATCH v4 3/8] staging: zcache: handle zcache_[eph|pers]_zpages for zero-filled page

frames for storage. So the zpages counter should be increased but the pageframes counter should not. [Dan Magenheimer : patch description] Acked-by: Dan Magenheimer Reviewed-by: Konrad Rzeszutek Wilk Signed-off-by: Wanpeng Li --- drivers/staging/zcache/zcache-main.c |7 ++- 1 files

[PATCH v4 6/8] staging: zcache: fix static variables defined in debug.h but used in mutiple C files

eated as shared variables. Signed-off-by: Wanpeng Li --- drivers/staging/zcache/debug.h | 62 +- drivers/staging/zcache/zcache-main.c | 31 + 2 files changed, 62 insertions(+), 31 deletions(-) diff --git a/drivers/staging/zcache/debug.h b/

[PATCH v4 4/8] staging: zcache: fix pers_pageframes|_max aren't exported in debugfs

Before commit 9c0ad59ef ("zcache/debug: Use an array to initialize/use debugfs attributes"), pers_pageframes|_max are exported in debugfs, but this commit forgot use array export pers_pageframes|_max. This patch add pers_pageframes|_max back. Signed-off-by: Wanpeng Li --- drive

[PATCH v6 1/3] staging: zcache: fix static variables defined in debug.h but used in mutiple C files

t be treated as shared variables. Signed-off-by: Wanpeng Li --- drivers/staging/zcache/debug.c | 32 drivers/staging/zcache/debug.h | 62 2 files changed, 63 insertions(+), 31 deletions(-) diff --git a/drivers/staging/zcache/debug.c b/

[PATCH v2 3/3] staging: zcache: clean TODO list

Cleanup TODO list since support zero-filled pages more efficiently has already done by this patchset. Acked-by: Dan Magenheimer Signed-off-by: Wanpeng Li --- drivers/staging/zcache/TODO |3 +-- 1 files changed, 1 insertions(+), 2 deletions(-) diff --git a/drivers/staging/zcache/TODO b

[PATCH part2 v6 0/3] staging: zcache: Support zero-filled pages more efficiently

areness: - fragmentation level: 98% - memory zcache occupy: 238MB with zero-filled awareness: - fragmentation level: 0% - memory zcache occupy: 0MB Wanpeng Li (3): staging: zcache: fix static variables defined in debug.h but used in mutiple C files staging: zcache: introduce zero-filled page

[PATCH v6 2/3] staging: zcache: introduce zero-filled page stat count

Introduce zero-filled page statistics to monitor the number of zero-filled pages. Acked-by: Dan Magenheimer Signed-off-by: Wanpeng Li --- drivers/staging/zcache/debug.c |3 +++ drivers/staging/zcache/debug.h | 17 + drivers/staging/zcache/zcache-main.c |4

[PATCH 5/6] mm/hugetlb: remove redundant hugetlb_prefault

hugetlb_prefault is not used by any users. This patch remove redundant hugetlb_prefault. Signed-off-by: Wanpeng Li --- include/linux/hugetlb.h |2 -- 1 file changed, 2 deletions(-) diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index b7e4106..813b265 100644 --- a/include

[PATCH 4/6] mm/hugetlb: use already exist huge_page_order() instead of h->order

Use already exist interface huge_page_order() instead of h->order to get huge page order. Signed-off-by: Wanpeng Li --- mm/hugetlb.c | 36 +++- 1 file changed, 19 insertions(+), 17 deletions(-) diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 328f140..0cae

[PATCH 3/6] mm/hugetlb: enable gigantic hugetlb page pools shrinking

Enable gigantic hugetlb page pools shrinking. Signed-off-by: Wanpeng Li --- mm/hugetlb.c |7 --- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/mm/hugetlb.c b/mm/hugetlb.c index eeaf6f2..328f140 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -1416,7 +1416,8 @@ static

[PATCH 2/6] mm/hugetlb: update_and_free_page gigantic pages awareness

order >= MAX_ORDER pages can't be freed to buddy system directly, this patch destroy the gigantic hugetlb page to normal order-0 pages and free them one by one. Signed-off-by: Wanpeng Li --- mm/hugetlb.c| 39 +-- mm/internal.h |

[PATCH 6/6] mm/hugetlb: use already exist interface huge_page_shift

Use already exist interface huge_page_shift instead of h->order + PAGE_SHIFT. Signed-off-by: Wanpeng Li --- mm/hugetlb.c |2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 0cae950..750ed8a 100644 --- a/mm/hugetlb.c +++ b/mm/hugetl

[PATCH 1/6] mm/hugetlb: introduce new sysctl knob which control gigantic page pools shrinking

m any more. Signed-off-by: Wanpeng Li --- Documentation/sysctl/vm.txt | 13 + include/linux/hugetlb.h |3 +++ kernel/sysctl.c |7 +++ mm/hugetlb.c|9 + 4 files changed, 32 insertions(+) diff --git a/Documentation/sysct

[PATCH 0/6] mm/hugetlb: gigantic hugetlb page pools shrink supporting

35972 Swap: 35999 0 35999 Wanpeng Li (6): introduce new sysctl knob which control gigantic page pools shrinking update_and_free_page gigantic pages awareness enable gigantic hugetlb page pools shrinking use already exist huge_page_order() instead of h->order re

[PATCH 1/4] zcache: introduce zero-filled pages handler

Introduce zero-filled pages handler to capture and handle zero pages. Signed-off-by: Wanpeng Li --- drivers/staging/zcache/zcache-main.c | 26 ++ 1 files changed, 26 insertions(+), 0 deletions(-) diff --git a/drivers/staging/zcache/zcache-main.c b/drivers/staging

[PATCH 3/4] zcache: introduce zero-filled pages stat count

Introduce zero-filled page statistics to monitor the number of zero-filled pages. Signed-off-by: Wanpeng Li --- drivers/staging/zcache/zcache-main.c |7 +++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/drivers/staging/zcache/zcache-main.c b/drivers/staging/zcache

[PATCH 2/4] zcache: zero-filled pages awareness

, we fill the page frame with zero. Signed-off-by: Wanpeng Li --- drivers/staging/zcache/tmem.c|4 +- drivers/staging/zcache/tmem.h|5 ++ drivers/staging/zcache/zcache-main.c | 87 ++ 3 files changed, 85 insertions(+), 11 deletions(-) diff

[PATCH 4/4] zcache: add pageframes count once compress zero-filled pages twice

Since zbudpage consist of two zpages, two zero-filled pages compression contribute to one [eph|pers]pageframe count accumulated. Signed-off-by: Wanpeng Li --- drivers/staging/zcache/zcache-main.c | 25 +++-- 1 files changed, 23 insertions(+), 2 deletions(-) diff --git a

[PATCH] zram: fix zram_bvec_read duplicate dump failure message and stat accumulation

When zram decompress fails, the code unnecessarily dumps failure messages and does stat accumulation in function zram_decompress_page(), this work is already done in function zram_decompress_page, the patch skips the redundant work. Signed-off-by: Wanpeng Li --- drivers/staging/zram/zram_drv.c

[PATCH 0/4] zcache: Support zero-filled pages more efficiently

illed awareness: - fragmentation level: 0% - memory zcache occupy: 0MB Wanpeng Li (4): introduce zero-filled pages handler zero-filled pages awareness introduce zero-filled pages stat count add pageframes count once compress zero-filled pages twice drivers/staging/zcache/tmem.c|4 +-

[PATCH] mm/hugetlb: fix total hugetlbfs pages count when memory overcommit accouting

case: boot: hugepagesz=1G hugepages=1 before patch: egrep 'CommitLimit' /proc/meminfo CommitLimit: 55434168 kB after patch: egrep 'CommitLimit' /proc/meminfo CommitLimit: 54909880 kB Signed-off-by: Wanpeng Li --- mm/hugetlb.c | 7 +-- 1 file changed, 5 insertions(+), 2

[PATCH v2 0/4] zcache: Support zero-filled pages more efficiently

|pers]_zbytes) * 100 / (zcache_[eph|pers]_pageframes * PAGE_SIZE) - memory zcache occupy = zcache_[eph|pers]_zbytes Result: without zero-filled awareness: - fragmentation level: 98% - memory zcache occupy: 238MB with zero-filled awareness: - fragmentation level: 0% - memory zcache occupy: 0MB Wanp

[PATCH v2 4/4] clean TODO list

Cleanup TODO list since support zero-filled pages more efficiently has already done by this patchset. Acked-by: Dan Magenheimer Signed-off-by: Wanpeng Li --- drivers/staging/zcache/TODO |3 +-- 1 files changed, 1 insertions(+), 2 deletions(-) diff --git a/drivers/staging/zcache/TODO b

[PATCH v2 3/4] introduce zero-filled page stat count

Introduce zero-filled page statistics to monitor the number of zero-filled pages. Acked-by: Dan Magenheimer Signed-off-by: Wanpeng Li --- drivers/staging/zcache/zcache-main.c |7 +++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/drivers/staging/zcache/zcache-main.c b

[PATCH v2 2/4] zero-filled pages awareness

, we fill the page frame with zero. Acked-by: Dan Magenheimer Signed-off-by: Wanpeng Li --- drivers/staging/zcache/zcache-main.c | 86 +++-- 1 files changed, 80 insertions(+), 6 deletions(-) diff --git a/drivers/staging/zcache/zcache-main.c b/drivers/staging/zcache

[PATCH v2 1/4] introduce zero filled pages handler

Introduce zero-filled pages handler to capture and handle zero pages. Acked-by: Dan Magenheimer Signed-off-by: Wanpeng Li --- drivers/staging/zcache/zcache-main.c | 26 ++ 1 files changed, 26 insertions(+), 0 deletions(-) diff --git a/drivers/staging/zcache/zcache

[PATCH v2] mm/hugetlb: fix total hugetlbfs pages count when memory overcommit accouting

esz=1G hugepages=1 before patch: egrep 'CommitLimit' /proc/meminfo CommitLimit: 55434168 kB after patch: egrep 'CommitLimit' /proc/meminfo CommitLimit: 54909880 kB Signed-off-by: Wanpeng Li --- mm/hugetlb.c | 7 +-- 1 file changed, 5 insertions(+), 2 deleti

[PATCH v3] mm/hugetlb: fix total hugetlbfs pages count when memory overcommit accouting

tio is 50 before patch: egrep 'CommitLimit' /proc/meminfo CommitLimit: 55434168 kB after patch: egrep 'CommitLimit' /proc/meminfo CommitLimit: 54909880 kB Signed-off-by: Wanpeng Li --- mm/hugetlb.c | 7 +-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git

[PATCH v3 1/5] introduce zero filled pages handler

Introduce zero-filled pages handler to capture and handle zero pages. Acked-by: Dan Magenheimer Signed-off-by: Wanpeng Li --- drivers/staging/zcache/zcache-main.c | 26 ++ 1 files changed, 26 insertions(+), 0 deletions(-) diff --git a/drivers/staging/zcache/zcache

[PATCH v3 5/5] clean TODO list

Cleanup TODO list since support zero-filled pages more efficiently has already done by this patchset. Acked-by: Dan Magenheimer Signed-off-by: Wanpeng Li --- drivers/staging/zcache/TODO |3 +-- 1 files changed, 1 insertions(+), 2 deletions(-) diff --git a/drivers/staging/zcache/TODO b

[PATCH v3 4/5] introduce zero-filled page stat count

Introduce zero-filled page statistics to monitor the number of zero-filled pages. Acked-by: Dan Magenheimer Signed-off-by: Wanpeng Li --- drivers/staging/zcache/zcache-main.c |7 +++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/drivers/staging/zcache/zcache-main.c b

[PATCH v3 3/5] handle zcache_[eph|pers]_zpages for zero-filled page

frames for storage. So the zpages counter should be increased but the pageframes counter should not. [Dan Magenheimer : patch description] Acked-by: Dan Magenheimer Signed-off-by: Wanpeng Li --- drivers/staging/zcache/zcache-main.c |7 ++- 1 files changed, 6 insertions(+), 1 deletion

[PATCH v3 2/5] zero-filled pages awareness

, we fill the page frame with zero. Acked-by: Dan Magenheimer Signed-off-by: Wanpeng Li --- drivers/staging/zcache/zcache-main.c | 81 +++--- 1 files changed, 75 insertions(+), 6 deletions(-) diff --git a/drivers/staging/zcache/zcache-main.c b/drivers/staging/zcache

[PATCH v3 0/5] zcache: Support zero-filled pages more efficiently

zcache_[eph|pers]_zbytes Result: without zero-filled awareness: - fragmentation level: 98% - memory zcache occupy: 238MB with zero-filled awareness: - fragmentation level: 0% - memory zcache occupy: 0MB Wanpeng Li (5): introduce zero-filled pages handler zero-filled pages awareness handle zcache

[PATCH v3 6/8] mm/hwpoison: drop forward reference declarations __soft_offline_page()

Drop forward reference declarations __soft_offline_page. Reviewed-by: Naoya Horiguchi Signed-off-by: Wanpeng Li --- mm/memory-failure.c | 128 ++-- 1 file changed, 63 insertions(+), 65 deletions(-) diff --git a/mm/memory-failure.c b/mm/memory

[PATCH v3 3/8] mm/hwpoison: fix race against poison thp

ck page if (!PageHWPoison(p)) unlock page and return hwpoison_user_mappings if (PageTransHuge(hpage)) split_huge_page(hpage); Suggested-by: Naoya Horiguchi Signed-off-by: Wanpeng Li --- mm/memory-failure.c | 10 ++ 1 file changed, 10 insertions(+) di

[PATCH v3 5/8] mm/hwpoison: don't set migration type twice to avoid hold heavy contend zone->lock

s MIGRATE_ISOLATE. There are other two parts can change MIGRATE_ISOLATE except hwpoison. One is memory hoplug, however, we hold lock_memory_hotplug() which avoid race. The second is CMA which umovable page allocation requst can't fallback to. So it's safe here. Signed-off-by: Wanpeng L

[PATCH v3 8/8] mm/hwpoison: fix memory failure still hold reference count after unpoison empty zero page

ory [ 117.256163] MCE: Page was already unpoisoned 0x19d0 [ 117.256167] pfn 0x19d0, page count = 1 after unpoison memory [ 117.917772] MCE: Page was already unpoisoned 0x19d0 [ 117.91] pfn 0x19d0, page count = 1 after unpoison memory Signed-off-by: Wanpeng Li --- mm/memory-failure.c

[PATCH v3 7/8] mm/hwpoison: add '#' to madvise_hwpoison

n LRU page recovery: Ignored Reviewed-by: Naoya Horiguchi Signed-off-by: Wanpeng Li --- mm/madvise.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/madvise.c b/mm/madvise.c index 95795df..588bb19 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -353,14 +353,14 @@

[PATCH v3 2/8] mm/hwpoison: don't need to hold compound lock for hugetlbfs page

bpage will be poisoned. There is unnecessary to hold compound lock for hugetlbfs page. This patch replace compound_trans_order by compond_order in the place where the page is hugetlbfs page. Reviewed-by: Naoya Horiguchi Signed-off-by: Wanpeng Li --- include/linux/mm.h | 14 -- mm/mem

[PATCH v3 1/8] mm/hwpoison: fix lose PG_dirty flag for errors on mlocked pages

lure for page 91cdd3 at 7f9f5b0e6000 [ 163.603852] MCE 0x91cdd3: dirty mlocked LRU page recovery: Recovered [ 163.610305] MCE 0x91cdd3: dirty mlocked LRU page still referenced by 1 users Reviewed-by: Naoya Horiguchi Signed-off-by: Wanpeng Li --- mm/memory-failure.c | 3 +++ 1 file changed, 3 inserti

[PATCH v3 4/8] mm/hwpoison: replacing atomic_long_sub() with atomic_long_dec()

Repalce atomic_long_sub() with atomic_long_dec() since the page is normal page instead of hugetlbfs page or thp. Reviewed-by: Naoya Horiguchi Signed-off-by: Wanpeng Li --- mm/memory-failure.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/memory-failure.c b/mm/memory

[PATCH v4 2/10] mm/hwpoison: don't need to hold compound lock for hugetlbfs page

bpage will be poisoned. There is unnecessary to hold compound lock for hugetlbfs page. This patch replace compound_trans_order by compond_order in the place where the page is hugetlbfs page. Reviewed-by: Naoya Horiguchi Signed-off-by: Wanpeng Li --- include/linux/mm.h | 14 -- mm/mem

[PATCH v4 8/10] mm/hwpoison: fix memory failure still hold reference count after unpoison empty zero page

ory [ 117.256163] MCE: Page was already unpoisoned 0x19d0 [ 117.256167] pfn 0x19d0, page count = 1 after unpoison memory [ 117.917772] MCE: Page was already unpoisoned 0x19d0 [ 117.91] pfn 0x19d0, page count = 1 after unpoison memory Signed-off-by: Wanpeng Li --- mm/memory-failure.c

[PATCH v4 6/10] mm/hwpoison: drop forward reference declarations __soft_offline_page()

Drop forward reference declarations __soft_offline_page. Reviewed-by: Naoya Horiguchi Signed-off-by: Wanpeng Li --- mm/memory-failure.c | 128 ++-- 1 file changed, 63 insertions(+), 65 deletions(-) diff --git a/mm/memory-failure.c b/mm/memory

[PATCH v4 10/10] mm/hwpoison: fix bug triggered by unpoison empty zero page

buddy system which is not correct since empty zero page has PG_reserved flag. This patch fix it by don't reduce the page reference count under 1 against empty zero page. Signed-off-by: Wanpeng Li --- mm/memory-failure.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a

[PATCH v4 5/10] mm/hwpoison: don't set migration type twice to avoid hold heavy contend zone->lock

s MIGRATE_ISOLATE. There are other two parts can change MIGRATE_ISOLATE except hwpoison. One is memory hoplug, however, we hold lock_memory_hotplug() which avoid race. The second is CMA which umovable page allocation requst can't fallback to. So it's safe here. Signed-off-by: Wanpeng L

[PATCH v4 3/10] mm/hwpoison: fix race against poison thp

turn hwpoison_user_mappings if (PageTransHuge(hpage)) split_huge_page(hpage); Suggested-by: Naoya Horiguchi Signed-off-by: Wanpeng Li --- mm/memory-failure.c | 10 ++ 1 file changed, 10 insertions(+) diff --git a/mm/memory-failure.c b/mm/memory-failure.c ind

[PATCH v4 9/10] mm/hwpoison: change permission of corrupt-pfn/unpoison-pfn to 0400

n-pfn: Permission denied This patch change the permission of corrupt-pfn/unpoison-pfn to 0400. Signed-off-by: Wanpeng Li --- mm/hwpoison-inject.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/hwpoison-inject.c b/mm/hwpoison-inject.c index 3a61efc..8b77bfd 100644 --- a/mm/hwp

[PATCH v4 7/10] mm/hwpoison: add '#' to madvise_hwpoison

n LRU page recovery: Ignored Reviewed-by: Naoya Horiguchi Signed-off-by: Wanpeng Li --- mm/madvise.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/madvise.c b/mm/madvise.c index 95795df..588bb19 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -353,14 +353,14 @@

[PATCH v4 1/10] mm/hwpoison: fix lose PG_dirty flag for errors on mlocked pages

lure for page 91cdd3 at 7f9f5b0e6000 [ 163.603852] MCE 0x91cdd3: dirty mlocked LRU page recovery: Recovered [ 163.610305] MCE 0x91cdd3: dirty mlocked LRU page still referenced by 1 users Reviewed-by: Naoya Horiguchi Signed-off-by: Wanpeng Li --- mm/memory-failure.c | 3 +++ 1 file changed, 3 inserti

[PATCH v4 4/10] mm/hwpoison: replacing atomic_long_sub() with atomic_long_dec()

Repalce atomic_long_sub() with atomic_long_dec() since the page is normal page instead of hugetlbfs page or thp. Reviewed-by: Naoya Horiguchi Signed-off-by: Wanpeng Li --- mm/memory-failure.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/memory-failure.c b/mm/memory

[PATCH 3/3] mm/hwpoison: fix bug triggered by unpoison empty zero page

which is not correct since empty zero page has PG_reserved flag. This patch fix it by don't reduce the page reference count under 1 against empty zero page. Signed-off-by: Wanpeng Li --- mm/memory-failure.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/memory-fail

[PATCH 1/3] mm/hwpoison: fix memory failure still hold reference count after unpoison empty zero page

failure for page 0x19d0 at 0xb77da000 [ 93.076224] MCE 0x19d0: already hardware poisoned [ 93.076225] pfn 0x19d0, page count = 3 after memory failure Suggested-by: Naoya Horiguchi Signed-off-by: Wanpeng Li --- mm/madvise.c | 4 1 file changed, 4 insertions(+) diff --git a/mm/madvise.c b/mm

[PATCH 2/3] mm/hwpoison: change permission of corrupt-pfn/unpoison-pfn to 0200

ssion denied This patch change the permission of corrupt-pfn/unpoison-pfn to 0200. Reviewed-by: Naoya Horiguchi Signed-off-by: Wanpeng Li --- mm/hwpoison-inject.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/hwpoison-inject.c b/mm/hwpoison-inject.c index 3a

[PATCH v2 1/3] mm/hwpoison: fix bug triggered by unpoison empty zero page

the last page reference count and free empty zero page to buddy system which is not correct since empty zero page has PG_reserved flag. This patch fix it by ignore empty zero page for madvise_hwpoison directly. Suggested-by: Naoya Horiguchi Signed-off-by: Wanpeng Li --- mm/madvise.c|

[PATCH v2 2/3] mm/hwpoison: change permission of corrupt-pfn/unpoison-pfn to 0200

ssion denied This patch change the permission of corrupt-pfn/unpoison-pfn to 0200. Reviewed-by: Naoya Horiguchi Signed-off-by: Wanpeng Li --- mm/hwpoison-inject.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/hwpoison-inject.c b/mm/hwpoison-inject.c index 3a

[PATCH v2 3/3] mm/hwpoison: fix return value of madvise_hwpoison

The return value outside for loop is always zero which means madvise_hwpoison return success, however, this is not truth for soft_offline_page w/ failure return value. Signed-off-by: Wanpeng Li --- mm/madvise.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/madvise.c b

[RESEND PATCH v5 2/4] mm/vmalloc: revert "mm/vmalloc.c: emit the failure message before return"

d-off-by: Wanpeng Li --- mm/vmalloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index d78d117..e3ec8b4 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -1635,7 +1635,7 @@ void *__vmalloc_node_range(unsigned long size, unsigned lo

[RESEND PATCH v5 3/4] mm/vmalloc: revert "mm/vmalloc.c: check VM_UNINITIALIZED flag in s_show instead of show_numa_info"

tch move the check just before show_numa_info in order that some messages still can be dumped via /proc/vmallocinfo. This patch revert commit d157a558 (mm/vmalloc.c: check VM_UNINITIALIZED flag in s_show instead of show_numa_info); Reviewed-by: Zhang Yanfei Signed-off-by: Wanpeng Li ---

[RESEND PATCH v5 1/4] mm/vmalloc: don't set area->caller twice

Changelog: *v1 -> v2: rebase against mmotm tree The caller address has already been set in set_vmalloc_vm(), there's no need to set it again in __vmalloc_area_node. Reviewed-by: Zhang Yanfei Signed-off-by: Wanpeng Li --- mm/vmalloc.c | 1 - 1 file changed, 1 deletion(-) diff --

[RESEND PATCH v5 4/4] mm/vmalloc: fix show vmap_area information race with vmap_area tear down

ce they are not possible for !VM_VM_AREA case. Suggested-by: Joonsoo Kim Signed-off-by: Wanpeng Li --- mm/vmalloc.c | 15 ++- 1 file changed, 6 insertions(+), 9 deletions(-) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 5368b17..9b75028 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c

[RESEND PATCH v2 1/4] mm/hwpoison: fix traverse hugetlbfs page to avoid printk flood

iewed-by: Naoya Horiguchi Signed-off-by: Wanpeng Li --- mm/madvise.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/mm/madvise.c b/mm/madvise.c index 6975bc8..539eeb9 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -343,10 +343,11 @@ static long madvise_remove(struct vm_a

[RESEND PATCH v2 4/4] mm/hwpoison: fix the lack of one reference count against poisoned page

patch: [ 94.710860] Injecting memory failure at pfn 215b68 [ 94.710885] MCE 0x215b68: dirty LRU page recovery: Recovered Reviewed-by: Naoya Horiguchi Signed-off-by: Wanpeng Li --- mm/hwpoison-inject.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/mm/hwpoison

[RESEND PATCH v2 3/4] mm/hwpoison: fix false report 2nd try page recovery

200010 [ 346.332189] MCE 0x200010: free buddy, 2nd try page recovery: Delayed After patch: [ 297.742600] Injecting memory failure at pfn 200010 [ 297.742941] MCE 0x200010: free buddy page recovery: Delayed Reviewed-by: Naoya Horiguchi Signed-off-by: Wanpeng Li --- mm/memory-failure.c |6

[RESEND PATCH v2 2/4] mm/hwpoison: fix miss catch transparent huge page

ecovery: Delayed [ 105.722303] MCE: Software-unpoisoned page 0x23a000 Reviewed-by: Naoya Horiguchi Signed-off-by: Wanpeng Li --- mm/memory-failure.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/memory-failure.c b/mm/memory-failure.c index e28ee77..b114570 100644 --- a/mm/memory

[PATCH v6 2/2] mm/vmalloc: drop "caller" argument of __vmalloc_area_node()

__vmalloc_area_node() no longer need "caller" argument. It can use area->caller instead. This patch drop "caller" argument of __vmalloc_area_node(). Signed-off-by: Wanpeng Li --- mm/vmalloc.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/mm/v

[PATCH v6 1/2] mm/vmalloc: fix show vmap_area information race with vmap_area tear down

ZY_FREE | VM_LAZY_FREEING) check since they are not possible for !VM_VM_AREA case. Suggested-by: Joonsoo Kim Acked-by: KOSAKI Motohiro Signed-off-by: Wanpeng Li --- mm/vmalloc.c | 15 ++- 1 file changed, 6 insertions(+), 9 deletions(-) diff --git a/mm/vmalloc.c b/mm/vmalloc.c in

[PATCH v3 1/4] mm/hwpoison: fix traverse hugetlbfs page to avoid printk flood

Naoya Horiguchi Acked-by: Andi Kleen Signed-off-by: Wanpeng Li --- mm/madvise.c |5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-) diff --git a/mm/madvise.c b/mm/madvise.c index 6975bc8..539eeb9 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -343,10 +343,11 @@ static long madvis

[PATCH v3 3/4] mm/hwpoison: fix false report 2nd try page recovery

200010 [ 346.332189] MCE 0x200010: free buddy, 2nd try page recovery: Delayed After patch: [ 297.742600] Injecting memory failure at pfn 200010 [ 297.742941] MCE 0x200010: free buddy page recovery: Delayed Reviewed-by: Naoya Horiguchi Acked-by: Andi Kleen Signed-off-by: Wanpeng Li --- mm/memory

[PATCH v3 4/4] mm/hwpoison: fix the lack of one reference count against poisoned page

: [ 94.710860] Injecting memory failure at pfn 215b68 [ 94.710885] MCE 0x215b68: dirty LRU page recovery: Recovered Reviewed-by: Naoya Horiguchi Acked-by: Andi Kleen Signed-off-by: Wanpeng Li --- mm/hwpoison-inject.c |5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-) diff

[PATCH v3 2/4] mm/hwpoison: fix miss catch transparent huge page

ecovery: Delayed [ 105.722303] MCE: Software-unpoisoned page 0x23a000 Reviewed-by: Naoya Horiguchi Acked-by: Andi Kleen Signed-off-by: Wanpeng Li --- mm/memory-failure.c |2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/mm/memory-failure.c b/mm/memory-failure.c index e28ee77..ed41

[PATCH 3/4] mm/hwpoison: fix false report 2nd try page recovery

200010 [ 346.332189] MCE 0x200010: free buddy, 2nd try page recovery: Delayed After patch: [ 297.742600] Injecting memory failure at pfn 200010 [ 297.742941] MCE 0x200010: free buddy page recovery: Delayed Signed-off-by: Wanpeng Li --- mm/memory-failure.c |6 -- 1 files changed, 4

[PATCH 4/4] mm/hwpoison: fix the lack of one reference count against poisoned page

patch: [ 94.710860] Injecting memory failure at pfn 215b68 [ 94.710885] MCE 0x215b68: dirty LRU page recovery: Recovered Signed-off-by: Wanpeng Li --- mm/hwpoison-inject.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/mm/hwpoison-inject.c b/mm/hwpoison-inject.c

[PATCH 2/4] mm/hwpoison: fix miss catch transparent huge page

3a200: huge page recovery: Delayed [ 140.355100] MCE: Memory failure is now running on 0x23a200 After patch: [ 94.290793] Injecting memory failure at pfn 23a000 [ 94.290800] MCE 0x23a000: huge page recovery: Delayed [ 105.722303] MCE: Software-unpoisoned page 0x23a000 Signed-off-by: Wanpe

[PATCH 1/4] mm/hwpoison: fix traverse hugetlbfs page to avoid printk flood

Signed-off-by: Wanpeng Li --- mm/madvise.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/mm/madvise.c b/mm/madvise.c index 6975bc8..539eeb9 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -343,10 +343,11 @@ static long madvise_remove(struct vm_area_struct *vma,

[PATCH 3/3] mm/vmalloc: move VM_UNINITIALIZED just before show_numa_info

that some messages still can be dumped via /proc/vmallocinfo. Signed-off-by: Wanpeng Li --- mm/vmalloc.c | 10 +- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index e3ec8b4..c4720cd 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -2590,11 +2590,6

[PATCH 1/3] mm/vmalloc: don't set area->caller twice

The caller address has already been set in set_vmalloc_vm(), there's no need to set it again in __vmalloc_area_node. Signed-off-by: Wanpeng Li --- mm/vmalloc.c | 1 - 1 file changed, 1 deletion(-) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 1074543..d78d117 100644 --- a/mm/vmalloc.c

[PATCH 2/3] mm/vmalloc: don't warning vmalloc allocation failure twice

Don't warning twice in __vmalloc_area_node and __vmalloc_node_range if __vmalloc_area_node allocation failure. Signed-off-by: Wanpeng Li --- mm/vmalloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index ee41cc6..e324d38 100644 ---

[PATCH v2 3/4] mm/hwpoison: fix false report 2nd try page recovery

200010 [ 346.332189] MCE 0x200010: free buddy, 2nd try page recovery: Delayed After patch: [ 297.742600] Injecting memory failure at pfn 200010 [ 297.742941] MCE 0x200010: free buddy page recovery: Delayed Reviewed-by: Naoya Horiguchi Signed-off-by: Wanpeng Li --- mm/memory-failure.c |6

[PATCH v2 4/4] mm/hwpoison: fix the lack of one reference count against poisoned page

patch: [ 94.710860] Injecting memory failure at pfn 215b68 [ 94.710885] MCE 0x215b68: dirty LRU page recovery: Recovered Reviewed-by: Naoya Horiguchi Signed-off-by: Wanpeng Li --- mm/hwpoison-inject.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/mm/hwpoison

[PATCH v2 1/4] mm/hwpoison: fix traverse hugetlbfs page to avoid printk flood

iewed-by: Naoya Horiguchi Signed-off-by: Wanpeng Li --- mm/madvise.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/mm/madvise.c b/mm/madvise.c index 6975bc8..539eeb9 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -343,10 +343,11 @@ static long madvise_remove(struct vm_a

[PATCH v2 2/4] mm/hwpoison: fix miss catch transparent huge page

ecovery: Delayed [ 105.722303] MCE: Software-unpoisoned page 0x23a000 Signed-off-by: Wanpeng Li --- mm/memory-failure.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/memory-failure.c b/mm/memory-failure.c index e28ee77..b114570 100644 --- a/mm/memory-failure.c +++ b/mm/

[PATCH v2 2/3] mm/vmalloc: don't warning vmalloc allocation failure twice

Don't warning twice in __vmalloc_area_node and __vmalloc_node_range if __vmalloc_area_node allocation failure. Signed-off-by: Wanpeng Li --- mm/vmalloc.c |2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index d78d117..e3ec8b4 100644 ---

[PATCH v2 1/3] mm/vmalloc: don't set area->caller twice

Changelog: * rebase against mmotm tree The caller address has already been set in set_vmalloc_vm(), there's no need to set it again in __vmalloc_area_node. Signed-off-by: Wanpeng Li --- mm/vmalloc.c |1 - 1 files changed, 0 insertions(+), 1 deletions(-) diff --git a/mm/vmalloc.c

[PATCH v2 3/3] mm/vmalloc: move VM_UNINITIALIZED just before show_numa_info

some messages still can be dumped via /proc/vmallocinfo. Signed-off-by: Wanpeng Li --- mm/vmalloc.c | 10 +- 1 files changed, 5 insertions(+), 5 deletions(-) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index e3ec8b4..c4720cd 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -2590,11 +2590,6

[PATCH v3 2/3] mm/vmalloc: revert "mm/vmalloc.c: emit the failure message before return"

Changelog: *v2 -> v3: revert commit 46c001a2 directly Don't warning twice in __vmalloc_area_node and __vmalloc_node_range if __vmalloc_area_node allocation failure. This patch revert commit 46c001a2 (mm/vmalloc.c: emit the failure message before return). Signed-off-by: Wanpeng Li

[PATCH v3 3/3] mm/vmalloc: revert "mm/vmalloc.c: check VM_UNINITIALIZED flag in s_show instead of show_numa_info"

tch move the check just before show_numa_info in order that some messages still can be dumped via /proc/vmallocinfo. This patch revert commit d157a558 (mm/vmalloc.c: check VM_UNINITIALIZED flag in s_show instead of show_numa_info); Signed-off-by: Wanpeng Li --- mm/vmalloc.c | 10 +- 1 f

[PATCH v3 1/3] mm/vmalloc: don't set area->caller twice

Changelog: *v1 -> v2: rebase against mmotm tree The caller address has already been set in set_vmalloc_vm(), there's no need to set it again in __vmalloc_area_node. Reviewed-by: Zhang Yanfei Signed-off-by: Wanpeng Li --- mm/vmalloc.c | 1 - 1 file changed, 1 deletion(-) diff --

[PATCH v4 4/4] mm/vmalloc: don't assume vmap_area w/o VM_VM_AREA flag is vm_map_ram allocation

va->flags |= VM_LAZY_FREE The assumption is introduced by commit: d4033afd(mm, vmalloc: iterate vmap_area_list, instead of vmlist, in vmallocinfo()). This patch fix it by drop the assumption and keep not dump vm_map_ram allocation information as the logic before that

[PATCH v4 2/4] mm/vmalloc: revert "mm/vmalloc.c: emit the failure message before return"

Changelog: *v2 -> v3: revert commit 46c001a2 directly Don't warning twice in __vmalloc_area_node and __vmalloc_node_range if __vmalloc_area_node allocation failure. This patch revert commit 46c001a2 (mm/vmalloc.c: emit the failure message before return). Signed-off-by: Wanpeng Li

[PATCH v4 3/4] mm/vmalloc: revert "mm/vmalloc.c: check VM_UNINITIALIZED flag in s_show instead of show_numa_info"

tch move the check just before show_numa_info in order that some messages still can be dumped via /proc/vmallocinfo. This patch revert commit d157a558 (mm/vmalloc.c: check VM_UNINITIALIZED flag in s_show instead of show_numa_info); Signed-off-by: Wanpeng Li --- mm/vmalloc.c | 10 +- 1 f

[PATCH v4 1/4] mm/vmalloc: don't set area->caller twice

Changelog: *v1 -> v2: rebase against mmotm tree The caller address has already been set in set_vmalloc_vm(), there's no need to set it again in __vmalloc_area_node. Reviewed-by: Zhang Yanfei Signed-off-by: Wanpeng Li --- mm/vmalloc.c | 1 - 1 file changed, 1 deletion(-) diff --

[PATCH v5 2/4] mm/vmalloc: revert "mm/vmalloc.c: emit the failure message before return"

d-off-by: Wanpeng Li --- mm/vmalloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index d78d117..e3ec8b4 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -1635,7 +1635,7 @@ void *__vmalloc_node_range(unsigned long size, unsigned lo

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