dequeue_hwpoisoned_huge_page() is no longer used, so let's remove it.
Signed-off-by: Naoya Horiguchi <[email protected]>
---
include/linux/hugetlb.h | 6 ------
mm/hugetlb.c | 34 ----------------------------------
mm/memory-failure.c | 11 -----------
3 files changed, 51 deletions(-)
diff --git v4.12-rc3/include/linux/hugetlb.h
v4.12-rc3_patched/include/linux/hugetlb.h
index 89afe40..b81931b 100644
--- v4.12-rc3/include/linux/hugetlb.h
+++ v4.12-rc3_patched/include/linux/hugetlb.h
@@ -92,7 +92,6 @@ int hugetlb_reserve_pages(struct inode *inode, long from,
long to,
vm_flags_t vm_flags);
long hugetlb_unreserve_pages(struct inode *inode, long start, long end,
long freed);
-int dequeue_hwpoisoned_huge_page(struct page *page);
bool isolate_huge_page(struct page *page, struct list_head *list);
void putback_active_hugepage(struct page *page);
void free_huge_page(struct page *page);
@@ -158,11 +157,6 @@ static inline void hugetlb_show_meminfo(void)
#define hugetlb_mcopy_atomic_pte(dst_mm, dst_pte, dst_vma, dst_addr, \
src_addr, pagep) ({ BUG(); 0; })
#define huge_pte_offset(mm, address) 0
-static inline int dequeue_hwpoisoned_huge_page(struct page *page)
-{
- return 0;
-}
-
static inline bool isolate_huge_page(struct page *page, struct list_head *list)
{
return false;
diff --git v4.12-rc3/mm/hugetlb.c v4.12-rc3_patched/mm/hugetlb.c
index 41c37ed..17f5f0f 100644
--- v4.12-rc3/mm/hugetlb.c
+++ v4.12-rc3_patched/mm/hugetlb.c
@@ -4701,40 +4701,6 @@ follow_huge_pud(struct mm_struct *mm, unsigned long
address,
return pte_page(*(pte_t *)pud) + ((address & ~PUD_MASK) >> PAGE_SHIFT);
}
-#ifdef CONFIG_MEMORY_FAILURE
-
-/*
- * This function is called from memory failure code.
- */
-int dequeue_hwpoisoned_huge_page(struct page *hpage)
-{
- struct hstate *h = page_hstate(hpage);
- int nid = page_to_nid(hpage);
- int ret = -EBUSY;
-
- spin_lock(&hugetlb_lock);
- /*
- * Just checking !page_huge_active is not enough, because that could be
- * an isolated/hwpoisoned hugepage (which have >0 refcount).
- */
- if (!page_huge_active(hpage) && !page_count(hpage)) {
- /*
- * Hwpoisoned hugepage isn't linked to activelist or freelist,
- * but dangling hpage->lru can trigger list-debug warnings
- * (this happens when we call unpoison_memory() on it),
- * so let it point to itself with list_del_init().
- */
- list_del_init(&hpage->lru);
- set_page_refcounted(hpage);
- h->free_huge_pages--;
- h->free_huge_pages_node[nid]--;
- ret = 0;
- }
- spin_unlock(&hugetlb_lock);
- return ret;
-}
-#endif
-
bool isolate_huge_page(struct page *page, struct list_head *list)
{
bool ret = true;
diff --git v4.12-rc3/mm/memory-failure.c v4.12-rc3_patched/mm/memory-failure.c
index 047867b..85009ead 100644
--- v4.12-rc3/mm/memory-failure.c
+++ v4.12-rc3_patched/mm/memory-failure.c
@@ -1458,17 +1458,6 @@ int unpoison_memory(unsigned long pfn)
}
if (!get_hwpoison_page(p)) {
- /*
- * Since HWPoisoned hugepage should have non-zero refcount,
- * race between memory failure and unpoison seems to happen.
- * In such case unpoison fails and memory failure runs
- * to the end.
- */
- if (PageHuge(page)) {
- unpoison_pr_info("Unpoison: Memory failure is now
running on free hugepage %#lx\n",
- pfn, &unpoison_rs);
- return 0;
- }
if (TestClearPageHWPoison(p))
num_poisoned_pages_dec();
unpoison_pr_info("Unpoison: Software-unpoisoned free page
%#lx\n",
--
2.7.0
