diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memory.c | 3 | ||||
| -rw-r--r-- | mm/migrate.c | 2 | ||||
| -rw-r--r-- | mm/page_alloc.c | 2 | ||||
| -rw-r--r-- | mm/shmem.c | 1 | ||||
| -rw-r--r-- | mm/swap_state.c | 3 |
5 files changed, 11 insertions, 0 deletions
diff --git a/mm/memory.c b/mm/memory.c index 1002f473f497..7512933dcc10 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -1888,6 +1888,7 @@ gotten: ptep_clear_flush_notify(vma, address, page_table); set_pte_at(mm, address, page_table, entry); update_mmu_cache(vma, address, entry); + SetPageSwapBacked(new_page); lru_cache_add_active(new_page); page_add_new_anon_rmap(new_page, vma, address); @@ -2382,6 +2383,7 @@ static int do_anonymous_page(struct mm_struct *mm, struct vm_area_struct *vma, if (!pte_none(*page_table)) goto release; inc_mm_counter(mm, anon_rss); + SetPageSwapBacked(page); lru_cache_add_active(page); page_add_new_anon_rmap(page, vma, address); set_pte_at(mm, address, page_table, entry); @@ -2523,6 +2525,7 @@ static int __do_fault(struct mm_struct *mm, struct vm_area_struct *vma, set_pte_at(mm, address, page_table, entry); if (anon) { inc_mm_counter(mm, anon_rss); + SetPageSwapBacked(page); lru_cache_add_active(page); page_add_new_anon_rmap(page, vma, address); } else { diff --git a/mm/migrate.c b/mm/migrate.c index ad15b5ef2599..c07327487111 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -572,6 +572,8 @@ static int move_to_new_page(struct page *newpage, struct page *page) /* Prepare mapping for the new page.*/ newpage->index = page->index; newpage->mapping = page->mapping; + if (PageSwapBacked(page)) + SetPageSwapBacked(newpage); mapping = page_mapping(page); if (!mapping) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index ee7a96ef40dc..2099904d6cc4 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -462,6 +462,8 @@ static inline int free_pages_check(struct page *page) bad_page(page); if (PageDirty(page)) __ClearPageDirty(page); + if (PageSwapBacked(page)) + __ClearPageSwapBacked(page); /* * For now, we report if PG_reserved was found set, but do not * clear it, and do not free the page. But we shall soon need diff --git a/mm/shmem.c b/mm/shmem.c index d87958a5f03e..fd421ed703ed 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -1367,6 +1367,7 @@ repeat: error = -ENOMEM; goto failed; } + SetPageSwapBacked(filepage); /* Precharge page while we can wait, compensate after */ error = mem_cgroup_cache_charge(filepage, current->mm, diff --git a/mm/swap_state.c b/mm/swap_state.c index 797c3831cbec..7a3ece0b5a3b 100644 --- a/mm/swap_state.c +++ b/mm/swap_state.c @@ -75,6 +75,7 @@ int add_to_swap_cache(struct page *page, swp_entry_t entry, gfp_t gfp_mask) BUG_ON(!PageLocked(page)); BUG_ON(PageSwapCache(page)); BUG_ON(PagePrivate(page)); + BUG_ON(!PageSwapBacked(page)); error = radix_tree_preload(gfp_mask); if (!error) { page_cache_get(page); @@ -303,6 +304,7 @@ struct page *read_swap_cache_async(swp_entry_t entry, gfp_t gfp_mask, * May fail (-ENOMEM) if radix-tree node allocation failed. */ set_page_locked(new_page); + SetPageSwapBacked(new_page); err = add_to_swap_cache(new_page, entry, gfp_mask & GFP_KERNEL); if (likely(!err)) { /* @@ -312,6 +314,7 @@ struct page *read_swap_cache_async(swp_entry_t entry, gfp_t gfp_mask, swap_readpage(NULL, new_page); return new_page; } + ClearPageSwapBacked(new_page); clear_page_locked(new_page); swap_free(entry); } while (err != -ENOMEM); |