diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/hugetlb.c | 29 | ||||
| -rw-r--r-- | mm/memory-failure.c | 6 |
2 files changed, 29 insertions, 6 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 0fa9de8361bd..deb7bebefe68 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -2955,18 +2955,39 @@ void hugetlb_unreserve_pages(struct inode *inode, long offset, long freed) hugetlb_acct_memory(h, -(chg - freed)); } +/* Should be called in hugetlb_lock */ +static int is_hugepage_on_freelist(struct page *hpage) +{ + struct page *page; + struct page *tmp; + struct hstate *h = page_hstate(hpage); + int nid = page_to_nid(hpage); + + list_for_each_entry_safe(page, tmp, &h->hugepage_freelists[nid], lru) + if (page == hpage) + return 1; + return 0; +} + +#ifdef CONFIG_MEMORY_FAILURE /* * This function is called from memory failure code. * Assume the caller holds page lock of the head page. */ -void __isolate_hwpoisoned_huge_page(struct page *hpage) +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); - list_del(&hpage->lru); - h->free_huge_pages--; - h->free_huge_pages_node[nid]--; + if (is_hugepage_on_freelist(hpage)) { + list_del(&hpage->lru); + h->free_huge_pages--; + h->free_huge_pages_node[nid]--; + ret = 0; + } spin_unlock(&hugetlb_lock); + return ret; } +#endif diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 757f6b0accfe..5c7158a11592 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -698,6 +698,7 @@ static int me_swapcache_clean(struct page *p, unsigned long pfn) */ static int me_huge_page(struct page *p, unsigned long pfn) { + int res = 0; struct page *hpage = compound_head(p); /* * We can safely recover from error on free or reserved (i.e. @@ -710,8 +711,9 @@ static int me_huge_page(struct page *p, unsigned long pfn) * so there is no race between isolation and mapping/unmapping. */ if (!(page_mapping(hpage) || PageAnon(hpage))) { - __isolate_hwpoisoned_huge_page(hpage); - return RECOVERED; + res = dequeue_hwpoisoned_huge_page(hpage); + if (!res) + return RECOVERED; } return DELAYED; } |