score: add prototypes for wrapped syscalls

[pandora-kernel.git] / mm / page_cgroup.c

diff --git a/mm/page_cgroup.c b/mm/page_cgroup.c
index 4f31c9b..f22b4eb 100644 (file)
--- a/mm/page_cgroup.c
+++ b/mm/page_cgroup.c
@@ -99,6 +99,8 @@ struct page_cgroup *lookup_page_cgroup(struct page *page)
        unsigned long pfn = page_to_pfn(page);
        struct mem_section *section = __pfn_to_section(pfn);
 
+       if (!section->page_cgroup)
+               return NULL;
        return section->page_cgroup + pfn;
 }
 
@@ -309,8 +311,6 @@ static int swap_cgroup_prepare(int type)
        struct swap_cgroup_ctrl *ctrl;
        unsigned long idx, max;
 
-       if (!do_swap_account)
-               return 0;
        ctrl = &swap_cgroup_ctrl[type];
 
        for (idx = 0; idx < ctrl->length; idx++) {
@@ -347,9 +347,6 @@ unsigned short swap_cgroup_record(swp_entry_t ent, unsigned short id)
        struct swap_cgroup *sc;
        unsigned short old;
 
-       if (!do_swap_account)
-               return 0;
-
        ctrl = &swap_cgroup_ctrl[type];
 
        mappage = ctrl->map[idx];
@@ -378,9 +375,6 @@ unsigned short lookup_swap_cgroup(swp_entry_t ent)
        struct swap_cgroup *sc;
        unsigned short ret;
 
-       if (!do_swap_account)
-               return 0;
-
        ctrl = &swap_cgroup_ctrl[type];
        mappage = ctrl->map[idx];
        sc = page_address(mappage);