Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma

[firefly-linux-kernel-4.4.55.git] / mm / page_alloc.c

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index edb0ce1e7cf3b12b885994c7b8cb74d9203f4a8f..df542feaac3bb6ce749c408cca37623af9ad19bf 100644 (file)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -48,7 +48,6 @@
 #include <linux/backing-dev.h>
 #include <linux/fault-inject.h>
 #include <linux/page-isolation.h>
-#include <linux/page_cgroup.h>
 #include <linux/debugobjects.h>
 #include <linux/kmemleak.h>
 #include <linux/compaction.h>
@@ -641,8 +640,10 @@ static inline int free_pages_check(struct page *page)
                bad_reason = "PAGE_FLAGS_CHECK_AT_FREE flag(s) set";
                bad_flags = PAGE_FLAGS_CHECK_AT_FREE;
        }
-       if (unlikely(mem_cgroup_bad_page_check(page)))
-               bad_reason = "cgroup check failed";
+#ifdef CONFIG_MEMCG
+       if (unlikely(page->mem_cgroup))
+               bad_reason = "page still charged to cgroup";
+#endif
        if (unlikely(bad_reason)) {
                bad_page(page, bad_reason, bad_flags);
                return 1;
@@ -901,8 +902,10 @@ static inline int check_new_page(struct page *page)
                bad_reason = "PAGE_FLAGS_CHECK_AT_PREP flag set";
                bad_flags = PAGE_FLAGS_CHECK_AT_PREP;
        }
-       if (unlikely(mem_cgroup_bad_page_check(page)))
-               bad_reason = "cgroup check failed";
+#ifdef CONFIG_MEMCG
+       if (unlikely(page->mem_cgroup))
+               bad_reason = "page still charged to cgroup";
+#endif
        if (unlikely(bad_reason)) {
                bad_page(page, bad_reason, bad_flags);
                return 1;
@@ -1739,7 +1742,7 @@ static bool __zone_watermark_ok(struct zone *z, unsigned int order,
                        unsigned long mark, int classzone_idx, int alloc_flags,
                        long free_pages)
 {
-       /* free_pages my go negative - that's OK */
+       /* free_pages may go negative - that's OK */
        long min = mark;
        int o;
        long free_cma = 0;
@@ -1987,7 +1990,7 @@ zonelist_scan:
 
        /*
         * Scan zonelist, looking for a zone with enough free.
-        * See also __cpuset_node_allowed_softwall() comment in kernel/cpuset.c.
+        * See also __cpuset_node_allowed() comment in kernel/cpuset.c.
         */
        for_each_zone_zonelist_nodemask(zone, z, zonelist,
                                                high_zoneidx, nodemask) {
@@ -1998,7 +2001,7 @@ zonelist_scan:
                                continue;
                if (cpusets_enabled() &&
                        (alloc_flags & ALLOC_CPUSET) &&
-                       !cpuset_zone_allowed_softwall(zone, gfp_mask))
+                       !cpuset_zone_allowed(zone, gfp_mask))
                                continue;
                /*
                 * Distribute pages in proportion to the individual
@@ -2359,10 +2362,6 @@ __alloc_pages_direct_compact(gfp_t gfp_mask, unsigned int order,
         */
        count_vm_event(COMPACTSTALL);
 
-       /* Page migration frees to the PCP lists but we want merging */
-       drain_pages(get_cpu());
-       put_cpu();
-
        page = get_page_from_freelist(gfp_mask, nodemask,
                        order, zonelist, high_zoneidx,
                        alloc_flags & ~ALLOC_NO_WATERMARKS,
@@ -2530,7 +2529,7 @@ gfp_to_alloc_flags(gfp_t gfp_mask)
                        alloc_flags |= ALLOC_HARDER;
                /*
                 * Ignore cpuset mems for GFP_ATOMIC rather than fail, see the
-                * comment for __cpuset_node_allowed_softwall().
+                * comment for __cpuset_node_allowed().
                 */
                alloc_flags &= ~ALLOC_CPUSET;
        } else if (unlikely(rt_task(current)) && !in_interrupt())
@@ -4857,7 +4856,6 @@ static void __paginginit free_area_init_core(struct pglist_data *pgdat,
 #endif
        init_waitqueue_head(&pgdat->kswapd_wait);
        init_waitqueue_head(&pgdat->pfmemalloc_wait);
-       pgdat_page_cgroup_init(pgdat);
 
        for (j = 0; j < MAX_NR_ZONES; j++) {
                struct zone *zone = pgdat->node_zones + j;