diff options
| -rw-r--r-- | include/linux/hugetlb.h | 3 | ||||
| -rw-r--r-- | mm/hugetlb.c | 14 | ||||
| -rw-r--r-- | mm/mempolicy.c | 4 |
3 files changed, 20 insertions, 1 deletions
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index bc8d8370cd0d..d1db00790a84 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -265,6 +265,8 @@ struct huge_bootmem_page { }; struct page *alloc_huge_page_node(struct hstate *h, int nid); +struct page *alloc_huge_page_noerr(struct vm_area_struct *vma, + unsigned long addr, int avoid_reserve); /* arch callback */ int __init alloc_bootmem_huge_page(struct hstate *h); @@ -378,6 +380,7 @@ static inline pgoff_t basepage_index(struct page *page) #else /* CONFIG_HUGETLB_PAGE */ struct hstate {}; #define alloc_huge_page_node(h, nid) NULL +#define alloc_huge_page_noerr(v, a, r) NULL #define alloc_bootmem_huge_page(h) NULL #define hstate_file(f) NULL #define hstate_sizelog(s) NULL diff --git a/mm/hugetlb.c b/mm/hugetlb.c index e51723866fb1..d37b3b95c439 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -1207,6 +1207,20 @@ static struct page *alloc_huge_page(struct vm_area_struct *vma, return page; } +/* + * alloc_huge_page()'s wrapper which simply returns the page if allocation + * succeeds, otherwise NULL. This function is called from new_vma_page(), + * where no ERR_VALUE is expected to be returned. + */ +struct page *alloc_huge_page_noerr(struct vm_area_struct *vma, + unsigned long addr, int avoid_reserve) +{ + struct page *page = alloc_huge_page(vma, addr, avoid_reserve); + if (IS_ERR(page)) + page = NULL; + return page; +} + int __weak alloc_bootmem_huge_page(struct hstate *h) { struct huge_bootmem_page *m; diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 4626be621e74..c7c359213ae1 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -1192,6 +1192,8 @@ static struct page *new_vma_page(struct page *page, unsigned long private, int * vma = vma->vm_next; } + if (PageHuge(page)) + return alloc_huge_page_noerr(vma, address, 1); /* * if !vma, alloc_page_vma() will use task or system default policy */ @@ -1302,7 +1304,7 @@ static long do_mbind(unsigned long start, unsigned long len, (unsigned long)vma, MIGRATE_SYNC, MR_MEMPOLICY_MBIND); if (nr_failed) - putback_lru_pages(&pagelist); + putback_movable_pages(&pagelist); } if (nr_failed && (flags & MPOL_MF_STRICT)) |