vfs: fix data corruption when blocksize < pagesize for mmaped data

[platform/adaptation/renesas_rcar/renesas_kernel.git] / mm / page_alloc.c

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 62e400d..ff0f6b1 100644 (file)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1869,7 +1869,7 @@ static void __paginginit init_zone_allows_reclaim(int nid)
 {
        int i;
 
-       for_each_online_node(i)
+       for_each_node_state(i, N_MEMORY)
                if (node_distance(nid, i) <= RECLAIM_DISTANCE)
                        node_set(i, NODE_DATA(nid)->reclaim_nodes);
                else
@@ -2736,7 +2736,7 @@ __alloc_pages_nodemask(gfp_t gfp_mask, unsigned int order,
                return NULL;
 
 retry_cpuset:
-       cpuset_mems_cookie = get_mems_allowed();
+       cpuset_mems_cookie = read_mems_allowed_begin();
 
        /* The preferred zone is used for statistics later */
        first_zones_zonelist(zonelist, high_zoneidx,
@@ -2791,7 +2791,7 @@ out:
         * the mask is being updated. If a page allocation is about to fail,
         * check if the cpuset changed during allocation and if so, retry.
         */
-       if (unlikely(!put_mems_allowed(cpuset_mems_cookie) && !page))
+       if (unlikely(!page && read_mems_allowed_retry(cpuset_mems_cookie)))
                goto retry_cpuset;
 
        memcg_kmem_commit_charge(page, memcg, order);
@@ -3059,9 +3059,9 @@ bool skip_free_areas_node(unsigned int flags, int nid)
                goto out;
 
        do {
-               cpuset_mems_cookie = get_mems_allowed();
+               cpuset_mems_cookie = read_mems_allowed_begin();
                ret = !node_isset(nid, cpuset_current_mems_allowed);
-       } while (!put_mems_allowed(cpuset_mems_cookie));
+       } while (read_mems_allowed_retry(cpuset_mems_cookie));
 out:
        return ret;
 }
@@ -4933,7 +4933,8 @@ void __paginginit free_area_init_node(int nid, unsigned long *zones_size,
 
        pgdat->node_id = nid;
        pgdat->node_start_pfn = node_start_pfn;
-       init_zone_allows_reclaim(nid);
+       if (node_state(nid, N_MEMORY))
+               init_zone_allows_reclaim(nid);
 #ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
        get_pfn_range_for_nid(nid, &start_pfn, &end_pfn);
 #endif