The patch titled
Subject: mm/hwpoison: introduce num_poisoned_pages wrappers
has been removed from the -mm tree. Its filename was
mm-hwpoison-introduce-num_poisoned_pages-wrappers.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Subject: mm/hwpoison: introduce num_poisoned_pages wrappers
num_poisoned_pages counter will be changed outside mm/memory-failure.c by a
subsequent patch, so this patch prepares wrappers to manipulate it.
Signed-off-by: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Tested-by: Wanpeng Li <wanpeng.li@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/swapops.h | 23 +++++++++++++++++++++++
mm/memory-failure.c | 30 ++++++++++++++----------------
2 files changed, 37 insertions(+), 16 deletions(-)
diff -puN include/linux/swapops.h~mm-hwpoison-introduce-num_poisoned_pages-wrappers include/linux/swapops.h
--- a/include/linux/swapops.h~mm-hwpoison-introduce-num_poisoned_pages-wrappers
+++ a/include/linux/swapops.h
@@ -164,6 +164,9 @@ static inline int is_write_migration_ent
#endif
#ifdef CONFIG_MEMORY_FAILURE
+
+extern atomic_long_t num_poisoned_pages __read_mostly;
+
/*
* Support for hardware poisoned pages
*/
@@ -177,6 +180,26 @@ static inline int is_hwpoison_entry(swp_
{
return swp_type(entry) == SWP_HWPOISON;
}
+
+static inline void num_poisoned_pages_inc(void)
+{
+ atomic_long_inc(&num_poisoned_pages);
+}
+
+static inline void num_poisoned_pages_dec(void)
+{
+ atomic_long_dec(&num_poisoned_pages);
+}
+
+static inline void num_poisoned_pages_add(long num)
+{
+ atomic_long_add(num, &num_poisoned_pages);
+}
+
+static inline void num_poisoned_pages_sub(long num)
+{
+ atomic_long_sub(num, &num_poisoned_pages);
+}
#else
static inline swp_entry_t make_hwpoison_entry(struct page *page)
diff -puN mm/memory-failure.c~mm-hwpoison-introduce-num_poisoned_pages-wrappers mm/memory-failure.c
--- a/mm/memory-failure.c~mm-hwpoison-introduce-num_poisoned_pages-wrappers
+++ a/mm/memory-failure.c
@@ -1121,7 +1121,7 @@ int memory_failure(unsigned long pfn, in
nr_pages = 1 << compound_order(hpage);
else /* normal page or thp */
nr_pages = 1;
- atomic_long_add(nr_pages, &num_poisoned_pages);
+ num_poisoned_pages_add(nr_pages);
/*
* We need/can do nothing about count=0 pages.
@@ -1149,7 +1149,7 @@ int memory_failure(unsigned long pfn, in
if (PageHWPoison(hpage)) {
if ((hwpoison_filter(p) && TestClearPageHWPoison(p))
|| (p != hpage && TestSetPageHWPoison(hpage))) {
- atomic_long_sub(nr_pages, &num_poisoned_pages);
+ num_poisoned_pages_sub(nr_pages);
unlock_page(hpage);
return 0;
}
@@ -1173,7 +1173,7 @@ int memory_failure(unsigned long pfn, in
else
pr_err("MCE: %#lx: thp split failed\n", pfn);
if (TestClearPageHWPoison(p))
- atomic_long_sub(nr_pages, &num_poisoned_pages);
+ num_poisoned_pages_sub(nr_pages);
put_hwpoison_page(p);
return -EBUSY;
}
@@ -1233,14 +1233,14 @@ int memory_failure(unsigned long pfn, in
*/
if (!PageHWPoison(p)) {
printk(KERN_ERR "MCE %#lx: just unpoisoned\n", pfn);
- atomic_long_sub(nr_pages, &num_poisoned_pages);
+ num_poisoned_pages_sub(nr_pages);
unlock_page(hpage);
put_hwpoison_page(hpage);
return 0;
}
if (hwpoison_filter(p)) {
if (TestClearPageHWPoison(p))
- atomic_long_sub(nr_pages, &num_poisoned_pages);
+ num_poisoned_pages_sub(nr_pages);
unlock_page(hpage);
put_hwpoison_page(hpage);
return 0;
@@ -1469,7 +1469,7 @@ int unpoison_memory(unsigned long pfn)
return 0;
}
if (TestClearPageHWPoison(p))
- atomic_long_dec(&num_poisoned_pages);
+ num_poisoned_pages_dec();
pr_info("MCE: Software-unpoisoned free page %#lx\n", pfn);
return 0;
}
@@ -1483,7 +1483,7 @@ int unpoison_memory(unsigned long pfn)
*/
if (TestClearPageHWPoison(page)) {
pr_info("MCE: Software-unpoisoned page %#lx\n", pfn);
- atomic_long_sub(nr_pages, &num_poisoned_pages);
+ num_poisoned_pages_sub(nr_pages);
freeit = 1;
if (PageHuge(page))
clear_page_hwpoison_huge_page(page);
@@ -1619,11 +1619,10 @@ static int soft_offline_huge_page(struct
if (PageHuge(page)) {
set_page_hwpoison_huge_page(hpage);
dequeue_hwpoisoned_huge_page(hpage);
- atomic_long_add(1 << compound_order(hpage),
- &num_poisoned_pages);
+ num_poisoned_pages_add(1 << compound_order(hpage));
} else {
SetPageHWPoison(page);
- atomic_long_inc(&num_poisoned_pages);
+ num_poisoned_pages_inc();
}
}
return ret;
@@ -1662,7 +1661,7 @@ static int __soft_offline_page(struct pa
put_hwpoison_page(page);
pr_info("soft_offline: %#lx: invalidated\n", pfn);
SetPageHWPoison(page);
- atomic_long_inc(&num_poisoned_pages);
+ num_poisoned_pages_inc();
return 0;
}
@@ -1683,7 +1682,7 @@ static int __soft_offline_page(struct pa
page_is_file_cache(page));
list_add(&page->lru, &pagelist);
if (!TestSetPageHWPoison(page))
- atomic_long_inc(&num_poisoned_pages);
+ num_poisoned_pages_dec();
ret = migrate_pages(&pagelist, new_page, NULL, MPOL_MF_MOVE_ALL,
MIGRATE_SYNC, MR_MEMORY_FAILURE);
if (ret) {
@@ -1699,7 +1698,7 @@ static int __soft_offline_page(struct pa
if (ret > 0)
ret = -EIO;
if (TestClearPageHWPoison(page))
- atomic_long_dec(&num_poisoned_pages);
+ num_poisoned_pages_dec();
}
} else {
pr_info("soft offline: %#lx: isolation failed: %d, page count %d, type %lx\n",
@@ -1765,11 +1764,10 @@ int soft_offline_page(struct page *page,
if (PageHuge(page)) {
set_page_hwpoison_huge_page(hpage);
if (!dequeue_hwpoisoned_huge_page(hpage))
- atomic_long_add(1 << compound_order(hpage),
- &num_poisoned_pages);
+ num_poisoned_pages_add(1 << compound_order(hpage));
} else {
if (!TestSetPageHWPoison(page))
- atomic_long_inc(&num_poisoned_pages);
+ num_poisoned_pages_inc();
}
}
return ret;
_
Patches currently in -mm which might be from n-horiguchi@xxxxxxxxxxxxx are
mm-hugetlb-proc-add-hugetlbpages-field-to-proc-pid-smaps.patch
mm-hugetlb-proc-add-hugetlbpages-field-to-proc-pid-smaps-fix.patch
mm-hugetlb-proc-add-hugetlbpages-field-to-proc-pid-status.patch
mm-hugetlb-proc-add-hugetlbpages-field-to-proc-pid-status-v5.patch
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