memory-failure: use num_poisoned_pages instead of mce_bad_pages

Since MCE is an x86 concept, and this code is in mm/, it would be better
to use the name num_poisoned_pages instead of mce_bad_pages.

[akpm@linux-foundation.org: fix mm/sparse.c]
Signed-off-by: Xishi Qiu <qiuxishi@huawei.com>
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Suggested-by: Borislav Petkov <bp@alien8.de>
Reviewed-by: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c
index 80e4645..c3dac61 100644 (file)
--- a/fs/proc/meminfo.c
+++ b/fs/proc/meminfo.c
@@ -158,7 +158,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
                vmi.used >> 10,
                vmi.largest_chunk >> 10
 #ifdef CONFIG_MEMORY_FAILURE
-               ,atomic_long_read(&mce_bad_pages) << (PAGE_SHIFT - 10)
+               ,atomic_long_read(&num_poisoned_pages) << (PAGE_SHIFT - 10)
 #endif
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
                ,K(global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) *

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 72a42c0..a114b8e 100644 (file)
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1753,7 +1753,7 @@ extern int unpoison_memory(unsigned long pfn);
 extern int sysctl_memory_failure_early_kill;
 extern int sysctl_memory_failure_recovery;
 extern void shake_page(struct page *p, int access);
-extern atomic_long_t mce_bad_pages;
+extern atomic_long_t num_poisoned_pages;
 extern int soft_offline_page(struct page *page, int flags);
 
 extern void dump_page(struct page *page);

diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index f4c9fa1..c95e19a 100644 (file)
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -61,7 +61,7 @@ int sysctl_memory_failure_early_kill __read_mostly = 0;
 
 int sysctl_memory_failure_recovery __read_mostly = 1;
 
-atomic_long_t mce_bad_pages __read_mostly = ATOMIC_LONG_INIT(0);
+atomic_long_t num_poisoned_pages __read_mostly = ATOMIC_LONG_INIT(0);
 
 #if defined(CONFIG_HWPOISON_INJECT) || defined(CONFIG_HWPOISON_INJECT_MODULE)
 
@@ -1040,7 +1040,7 @@ int memory_failure(unsigned long pfn, int trapno, int flags)
        }
 
        nr_pages = 1 << compound_trans_order(hpage);
-       atomic_long_add(nr_pages, &mce_bad_pages);
+       atomic_long_add(nr_pages, &num_poisoned_pages);
 
        /*
         * We need/can do nothing about count=0 pages.
@@ -1070,7 +1070,7 @@ int memory_failure(unsigned long pfn, int trapno, int flags)
                        if (!PageHWPoison(hpage)
                            || (hwpoison_filter(p) && TestClearPageHWPoison(p))
                            || (p != hpage && TestSetPageHWPoison(hpage))) {
-                               atomic_long_sub(nr_pages, &mce_bad_pages);
+                               atomic_long_sub(nr_pages, &num_poisoned_pages);
                                return 0;
                        }
                        set_page_hwpoison_huge_page(hpage);
@@ -1128,7 +1128,7 @@ int memory_failure(unsigned long pfn, int trapno, int flags)
        }
        if (hwpoison_filter(p)) {
                if (TestClearPageHWPoison(p))
-                       atomic_long_sub(nr_pages, &mce_bad_pages);
+                       atomic_long_sub(nr_pages, &num_poisoned_pages);
                unlock_page(hpage);
                put_page(hpage);
                return 0;
@@ -1323,7 +1323,7 @@ int unpoison_memory(unsigned long pfn)
                        return 0;
                }
                if (TestClearPageHWPoison(p))
-                       atomic_long_sub(nr_pages, &mce_bad_pages);
+                       atomic_long_sub(nr_pages, &num_poisoned_pages);
                pr_info("MCE: Software-unpoisoned free page %#lx\n", pfn);
                return 0;
        }
@@ -1337,7 +1337,7 @@ int unpoison_memory(unsigned long pfn)
         */
        if (TestClearPageHWPoison(page)) {
                pr_info("MCE: Software-unpoisoned page %#lx\n", pfn);
-               atomic_long_sub(nr_pages, &mce_bad_pages);
+               atomic_long_sub(nr_pages, &num_poisoned_pages);
                freeit = 1;
                if (PageHuge(page))
                        clear_page_hwpoison_huge_page(page);
@@ -1442,7 +1442,7 @@ static int soft_offline_huge_page(struct page *page, int flags)
        }
 done:
        /* keep elevated page count for bad page */
-       atomic_long_add(1 << compound_trans_order(hpage), &mce_bad_pages);
+       atomic_long_add(1 << compound_trans_order(hpage), &num_poisoned_pages);
        set_page_hwpoison_huge_page(hpage);
        dequeue_hwpoisoned_huge_page(hpage);
 out:
@@ -1585,7 +1585,7 @@ int soft_offline_page(struct page *page, int flags)
 
 done:
        /* keep elevated page count for bad page */
-       atomic_long_inc(&mce_bad_pages);
+       atomic_long_inc(&num_poisoned_pages);
        SetPageHWPoison(page);
 out:
        return ret;

diff --git a/mm/sparse.c b/mm/sparse.c
index cff9796..7ca6dc8 100644 (file)
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -783,7 +783,7 @@ static void clear_hwpoisoned_pages(struct page *memmap, int nr_pages)
 
        for (i = 0; i < PAGES_PER_SECTION; i++) {
                if (PageHWPoison(&memmap[i])) {
-                       atomic_long_sub(1, &mce_bad_pages);
+                       atomic_long_sub(1, &num_poisoned_pages);
                        ClearPageHWPoison(&memmap[i]);
                }
        }