mm/vmscan.c:__zone_reclaim(): replace max_t() with max()

[deliverable/linux.git] / mm / ksm.c

diff --git a/mm/ksm.c b/mm/ksm.c
index 82dfb4b5432100799c58750823b374a30b6dbf8e..e1f1f278075fc63fdde1b808c118c6dee2e88a64 100644 (file)
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -1590,13 +1590,7 @@ struct page *ksm_does_need_to_copy(struct page *page,
 
                SetPageDirty(new_page);
                __SetPageUptodate(new_page);
-               SetPageSwapBacked(new_page);
                __set_page_locked(new_page);
-
-               if (!mlocked_vma_newpage(vma, new_page))
-                       lru_cache_add_lru(new_page, LRU_ACTIVE_ANON);
-               else
-                       add_page_to_unevictable_list(new_page);
        }
 
        return new_page;
@@ -1624,7 +1618,7 @@ again:
                struct anon_vma_chain *vmac;
                struct vm_area_struct *vma;
 
-               anon_vma_lock_write(anon_vma);
+               anon_vma_lock_read(anon_vma);
                anon_vma_interval_tree_foreach(vmac, &anon_vma->rb_root,
                                               0, ULONG_MAX) {
                        vma = vmac->vma;
@@ -1648,7 +1642,7 @@ again:
                        if (!search_new_forks || !mapcount)
                                break;
                }
-               anon_vma_unlock(anon_vma);
+               anon_vma_unlock_read(anon_vma);
                if (!mapcount)
                        goto out;
        }
@@ -1678,7 +1672,7 @@ again:
                struct anon_vma_chain *vmac;
                struct vm_area_struct *vma;
 
-               anon_vma_lock_write(anon_vma);
+               anon_vma_lock_read(anon_vma);
                anon_vma_interval_tree_foreach(vmac, &anon_vma->rb_root,
                                               0, ULONG_MAX) {
                        vma = vmac->vma;
@@ -1697,11 +1691,11 @@ again:
                        ret = try_to_unmap_one(page, vma,
                                        rmap_item->address, flags);
                        if (ret != SWAP_AGAIN || !page_mapped(page)) {
-                               anon_vma_unlock(anon_vma);
+                               anon_vma_unlock_read(anon_vma);
                                goto out;
                        }
                }
-               anon_vma_unlock(anon_vma);
+               anon_vma_unlock_read(anon_vma);
        }
        if (!search_new_forks++)
                goto again;
@@ -1731,7 +1725,7 @@ again:
                struct anon_vma_chain *vmac;
                struct vm_area_struct *vma;
 
-               anon_vma_lock_write(anon_vma);
+               anon_vma_lock_read(anon_vma);
                anon_vma_interval_tree_foreach(vmac, &anon_vma->rb_root,
                                               0, ULONG_MAX) {
                        vma = vmac->vma;
@@ -1749,11 +1743,11 @@ again:
 
                        ret = rmap_one(page, vma, rmap_item->address, arg);
                        if (ret != SWAP_AGAIN) {
-                               anon_vma_unlock(anon_vma);
+                               anon_vma_unlock_read(anon_vma);
                                goto out;
                        }
                }
-               anon_vma_unlock(anon_vma);
+               anon_vma_unlock_read(anon_vma);
        }
        if (!search_new_forks++)
                goto again;