mm,hwpoison: kill put_hwpoison_page

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 <osalvador@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Aristeu Rozanski <aris@ruivo.org>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Dmitry Yakunin <zeil@yandex-team.ru>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Oscar Salvador <osalvador@suse.com>
Cc: Qian Cai <cai@lca.pw>
Cc: Tony Luck <tony.luck@intel.com>
Link: https://lkml.kernel.org/r/20200922135650.1634-7-osalvador@suse.de
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 1977c09..ab038a3 100644 (file)
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -3025,7 +3025,6 @@ 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 a/mm/memory-failure.c b/mm/memory-failure.c
index 95d5d8f..4a9f8dc 100644 (file)
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1143,7 +1143,7 @@ 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;
        }
 
@@ -1335,7 +1335,7 @@ 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);
@@ -1388,14 +1388,14 @@ 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;
        }
 
@@ -1629,9 +1629,9 @@ 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;
 }
@@ -1692,7 +1692,7 @@ 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);
 
                /*
@@ -1701,7 +1701,7 @@ 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;
@@ -1724,7 +1724,7 @@ 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;
        }
@@ -1735,7 +1735,7 @@ 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;
@@ -1784,7 +1784,7 @@ 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;
        }
@@ -1799,7 +1799,7 @@ 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();
@@ -1819,7 +1819,7 @@ 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);
                /*
@@ -1863,7 +1863,7 @@ 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);
@@ -1936,7 +1936,7 @@ 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;
        }