From: Oscar Salvador <osalva...@suse.de>

After commit 4e41a30c6d50 ("mm: hwpoison: adjust for new thp refcounting"),
put_hwpoison_page got reduced to a put_page.
Let us just use put_page instead.

Signed-off-by: Oscar Salvador <osalva...@suse.de>
Signed-off-by: Naoya Horiguchi <naoya.horigu...@nec.com>
---
 include/linux/mm.h  |  1 -
 mm/memory-failure.c | 30 +++++++++++++++---------------
 2 files changed, 15 insertions(+), 16 deletions(-)

diff --git v5.8-rc7-mmotm-2020-07-27-18-18/include/linux/mm.h 
v5.8-rc7-mmotm-2020-07-27-18-18_patched/include/linux/mm.h
index 8f742373a46a..371970dfffc4 100644
--- v5.8-rc7-mmotm-2020-07-27-18-18/include/linux/mm.h
+++ v5.8-rc7-mmotm-2020-07-27-18-18_patched/include/linux/mm.h
@@ -2985,7 +2985,6 @@ extern int memory_failure(unsigned long pfn, int flags);
 extern void memory_failure_queue(unsigned long pfn, int flags);
 extern void memory_failure_queue_kick(int cpu);
 extern int unpoison_memory(unsigned long pfn);
-#define put_hwpoison_page(page)        put_page(page)
 extern int sysctl_memory_failure_early_kill;
 extern int sysctl_memory_failure_recovery;
 extern void shake_page(struct page *p, int access);
diff --git v5.8-rc7-mmotm-2020-07-27-18-18/mm/memory-failure.c 
v5.8-rc7-mmotm-2020-07-27-18-18_patched/mm/memory-failure.c
index 405c9bef6ffb..6853bf3a253d 100644
--- v5.8-rc7-mmotm-2020-07-27-18-18/mm/memory-failure.c
+++ v5.8-rc7-mmotm-2020-07-27-18-18_patched/mm/memory-failure.c
@@ -1144,7 +1144,7 @@ static int memory_failure_hugetlb(unsigned long pfn, int 
flags)
                pr_err("Memory failure: %#lx: just unpoisoned\n", pfn);
                num_poisoned_pages_dec();
                unlock_page(head);
-               put_hwpoison_page(head);
+               put_page(head);
                return 0;
        }
 
@@ -1336,7 +1336,7 @@ int memory_failure(unsigned long pfn, int flags)
                                        pfn);
                        if (TestClearPageHWPoison(p))
                                num_poisoned_pages_dec();
-                       put_hwpoison_page(p);
+                       put_page(p);
                        return -EBUSY;
                }
                unlock_page(p);
@@ -1389,14 +1389,14 @@ int memory_failure(unsigned long pfn, int flags)
                pr_err("Memory failure: %#lx: just unpoisoned\n", pfn);
                num_poisoned_pages_dec();
                unlock_page(p);
-               put_hwpoison_page(p);
+               put_page(p);
                return 0;
        }
        if (hwpoison_filter(p)) {
                if (TestClearPageHWPoison(p))
                        num_poisoned_pages_dec();
                unlock_page(p);
-               put_hwpoison_page(p);
+               put_page(p);
                return 0;
        }
 
@@ -1630,9 +1630,9 @@ int unpoison_memory(unsigned long pfn)
        }
        unlock_page(page);
 
-       put_hwpoison_page(page);
+       put_page(page);
        if (freeit && !(pfn == my_zero_pfn(0) && page_count(p) == 1))
-               put_hwpoison_page(page);
+               put_page(page);
 
        return 0;
 }
@@ -1683,7 +1683,7 @@ static int get_any_page(struct page *page, unsigned long 
pfn, int flags)
                /*
                 * Try to free it.
                 */
-               put_hwpoison_page(page);
+               put_page(page);
                shake_page(page, 1);
 
                /*
@@ -1692,7 +1692,7 @@ static int get_any_page(struct page *page, unsigned long 
pfn, int flags)
                ret = __get_any_page(page, pfn, 0);
                if (ret == 1 && !PageLRU(page)) {
                        /* Drop page reference which is from __get_any_page() */
-                       put_hwpoison_page(page);
+                       put_page(page);
                        pr_info("soft_offline: %#lx: unknown non LRU page type 
%lx (%pGp)\n",
                                pfn, page->flags, &page->flags);
                        return -EIO;
@@ -1715,7 +1715,7 @@ static int soft_offline_huge_page(struct page *page, int 
flags)
        lock_page(hpage);
        if (PageHWPoison(hpage)) {
                unlock_page(hpage);
-               put_hwpoison_page(hpage);
+               put_page(hpage);
                pr_info("soft offline: %#lx hugepage already poisoned\n", pfn);
                return -EBUSY;
        }
@@ -1726,7 +1726,7 @@ static int soft_offline_huge_page(struct page *page, int 
flags)
         * get_any_page() and isolate_huge_page() takes a refcount each,
         * so need to drop one here.
         */
-       put_hwpoison_page(hpage);
+       put_page(hpage);
        if (!ret) {
                pr_info("soft offline: %#lx hugepage failed to isolate\n", pfn);
                return -EBUSY;
@@ -1779,7 +1779,7 @@ static int __soft_offline_page(struct page *page, int 
flags)
        wait_on_page_writeback(page);
        if (PageHWPoison(page)) {
                unlock_page(page);
-               put_hwpoison_page(page);
+               put_page(page);
                pr_info("soft offline: %#lx page already poisoned\n", pfn);
                return -EBUSY;
        }
@@ -1794,7 +1794,7 @@ static int __soft_offline_page(struct page *page, int 
flags)
         * would need to fix isolation locking first.
         */
        if (ret == 1) {
-               put_hwpoison_page(page);
+               put_page(page);
                pr_info("soft_offline: %#lx: invalidated\n", pfn);
                SetPageHWPoison(page);
                num_poisoned_pages_inc();
@@ -1814,7 +1814,7 @@ static int __soft_offline_page(struct page *page, int 
flags)
         * Drop page reference which is came from get_any_page()
         * successful isolate_lru_page() already took another one.
         */
-       put_hwpoison_page(page);
+       put_page(page);
        if (!ret) {
                LIST_HEAD(pagelist);
                /*
@@ -1858,7 +1858,7 @@ static int soft_offline_in_use_page(struct page *page, 
int flags)
                                pr_info("soft offline: %#lx: non anonymous 
thp\n", page_to_pfn(page));
                        else
                                pr_info("soft offline: %#lx: thp split 
failed\n", page_to_pfn(page));
-                       put_hwpoison_page(page);
+                       put_page(page);
                        return -EBUSY;
                }
                unlock_page(page);
@@ -1931,7 +1931,7 @@ int soft_offline_page(unsigned long pfn, int flags)
        if (PageHWPoison(page)) {
                pr_info("soft offline: %#lx page already poisoned\n", pfn);
                if (flags & MF_COUNT_INCREASED)
-                       put_hwpoison_page(page);
+                       put_page(page);
                return -EBUSY;
        }
 
-- 
2.17.1

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