aboutsummaryrefslogtreecommitdiffstats
path: root/mm
diff options
context:
space:
mode:
Diffstat (limited to 'mm')
-rw-r--r--mm/madvise.c1
-rw-r--r--mm/memory-failure.c8
2 files changed, 4 insertions, 5 deletions
diff --git a/mm/madvise.c b/mm/madvise.c
index 35b1479b7c9d..18970aec0d2f 100644
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -238,7 +238,6 @@ static int madvise_hwpoison(unsigned long start, unsigned long end)
238 page_to_pfn(p), start); 238 page_to_pfn(p), start);
239 /* Ignore return value for now */ 239 /* Ignore return value for now */
240 __memory_failure(page_to_pfn(p), 0, 1); 240 __memory_failure(page_to_pfn(p), 0, 1);
241 put_page(p);
242 } 241 }
243 return ret; 242 return ret;
244} 243}
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 275f4e2df8ac..4253e14fa709 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -627,7 +627,7 @@ static void action_result(unsigned long pfn, char *msg, int result)
627} 627}
628 628
629static int page_action(struct page_state *ps, struct page *p, 629static int page_action(struct page_state *ps, struct page *p,
630 unsigned long pfn, int ref) 630 unsigned long pfn)
631{ 631{
632 int result; 632 int result;
633 int count; 633 int count;
@@ -635,7 +635,7 @@ static int page_action(struct page_state *ps, struct page *p,
635 result = ps->action(p, pfn); 635 result = ps->action(p, pfn);
636 action_result(pfn, ps->msg, result); 636 action_result(pfn, ps->msg, result);
637 637
638 count = page_count(p) - 1 - ref; 638 count = page_count(p) - 1;
639 if (count != 0) 639 if (count != 0)
640 printk(KERN_ERR 640 printk(KERN_ERR
641 "MCE %#lx: %s page still referenced by %d users\n", 641 "MCE %#lx: %s page still referenced by %d users\n",
@@ -773,7 +773,7 @@ int __memory_failure(unsigned long pfn, int trapno, int ref)
773 * In fact it's dangerous to directly bump up page count from 0, 773 * In fact it's dangerous to directly bump up page count from 0,
774 * that may make page_freeze_refs()/page_unfreeze_refs() mismatch. 774 * that may make page_freeze_refs()/page_unfreeze_refs() mismatch.
775 */ 775 */
776 if (!get_page_unless_zero(compound_head(p))) { 776 if (!ref && !get_page_unless_zero(compound_head(p))) {
777 action_result(pfn, "free or high order kernel", IGNORED); 777 action_result(pfn, "free or high order kernel", IGNORED);
778 return PageBuddy(compound_head(p)) ? 0 : -EBUSY; 778 return PageBuddy(compound_head(p)) ? 0 : -EBUSY;
779 } 779 }
@@ -821,7 +821,7 @@ int __memory_failure(unsigned long pfn, int trapno, int ref)
821 res = -EBUSY; 821 res = -EBUSY;
822 for (ps = error_states;; ps++) { 822 for (ps = error_states;; ps++) {
823 if (((p->flags | lru_flag)& ps->mask) == ps->res) { 823 if (((p->flags | lru_flag)& ps->mask) == ps->res) {
824 res = page_action(ps, p, pfn, ref); 824 res = page_action(ps, p, pfn);
825 break; 825 break;
826 } 826 }
827 } 827 }