mm/memblock.c: call kmemleak directly from memblock_(alloc|free)

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

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 64635f5278ff2d41525fe1ca3ebcf5314c95e3e4..e60837dc785c4ce35f579374527587c77665ecce 100644 (file)
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -5,6 +5,8 @@
  *  the COPYING file in the top-level directory.
  */
 
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
 #include <linux/mm.h>
 #include <linux/sched.h>
 #include <linux/highmem.h>
@@ -151,8 +153,7 @@ static int start_khugepaged(void)
                        khugepaged_thread = kthread_run(khugepaged, NULL,
                                                        "khugepaged");
                if (unlikely(IS_ERR(khugepaged_thread))) {
-                       printk(KERN_ERR
-                              "khugepaged: kthread_run(khugepaged) failed\n");
+                       pr_err("khugepaged: kthread_run(khugepaged) failed\n");
                        err = PTR_ERR(khugepaged_thread);
                        khugepaged_thread = NULL;
                }
@@ -584,19 +585,19 @@ static int __init hugepage_init_sysfs(struct kobject **hugepage_kobj)
 
        *hugepage_kobj = kobject_create_and_add("transparent_hugepage", mm_kobj);
        if (unlikely(!*hugepage_kobj)) {
-               printk(KERN_ERR "hugepage: failed to create transparent hugepage kobject\n");
+               pr_err("failed to create transparent hugepage kobject\n");
                return -ENOMEM;
        }
 
        err = sysfs_create_group(*hugepage_kobj, &hugepage_attr_group);
        if (err) {
-               printk(KERN_ERR "hugepage: failed to register transparent hugepage group\n");
+               pr_err("failed to register transparent hugepage group\n");
                goto delete_obj;
        }
 
        err = sysfs_create_group(*hugepage_kobj, &khugepaged_attr_group);
        if (err) {
-               printk(KERN_ERR "hugepage: failed to register transparent hugepage group\n");
+               pr_err("failed to register transparent hugepage group\n");
                goto remove_hp_group;
        }
 
@@ -689,8 +690,7 @@ static int __init setup_transparent_hugepage(char *str)
        }
 out:
        if (!ret)
-               printk(KERN_WARNING
-                      "transparent_hugepage= cannot parse, ignored\n");
+               pr_warn("transparent_hugepage= cannot parse, ignored\n");
        return ret;
 }
 __setup("transparent_hugepage=", setup_transparent_hugepage);
@@ -1536,16 +1536,23 @@ pmd_t *page_check_address_pmd(struct page *page,
                              enum page_check_address_pmd_flag flag,
                              spinlock_t **ptl)
 {
+       pgd_t *pgd;
+       pud_t *pud;
        pmd_t *pmd;
 
        if (address & ~HPAGE_PMD_MASK)
                return NULL;
 
-       pmd = mm_find_pmd(mm, address);
-       if (!pmd)
+       pgd = pgd_offset(mm, address);
+       if (!pgd_present(*pgd))
+               return NULL;
+       pud = pud_offset(pgd, address);
+       if (!pud_present(*pud))
                return NULL;
+       pmd = pmd_offset(pud, address);
+
        *ptl = pmd_lock(mm, pmd);
-       if (pmd_none(*pmd))
+       if (!pmd_present(*pmd))
                goto unlock;
        if (pmd_page(*pmd) != page)
                goto unlock;
@@ -1823,10 +1830,11 @@ static void __split_huge_page(struct page *page,
         * the newly established pmd of the child later during the
         * walk, to be able to set it as pmd_trans_splitting too.
         */
-       if (mapcount != page_mapcount(page))
-               printk(KERN_ERR "mapcount %d page_mapcount %d\n",
-                      mapcount, page_mapcount(page));
-       BUG_ON(mapcount != page_mapcount(page));
+       if (mapcount != page_mapcount(page)) {
+               pr_err("mapcount %d page_mapcount %d\n",
+                       mapcount, page_mapcount(page));
+               BUG();
+       }
 
        __split_huge_page_refcount(page, list);
 
@@ -1837,10 +1845,11 @@ static void __split_huge_page(struct page *page,
                BUG_ON(is_vma_temporary_stack(vma));
                mapcount2 += __split_huge_page_map(page, vma, addr);
        }
-       if (mapcount != mapcount2)
-               printk(KERN_ERR "mapcount %d mapcount2 %d page_mapcount %d\n",
-                      mapcount, mapcount2, page_mapcount(page));
-       BUG_ON(mapcount != mapcount2);
+       if (mapcount != mapcount2) {
+               pr_err("mapcount %d mapcount2 %d page_mapcount %d\n",
+                       mapcount, mapcount2, page_mapcount(page));
+               BUG();
+       }
 }
 
 /*
@@ -2733,7 +2742,7 @@ static int khugepaged(void *none)
        struct mm_slot *mm_slot;
 
        set_freezable();
-       set_user_nice(current, 19);
+       set_user_nice(current, MAX_NICE);
 
        while (!kthread_should_stop()) {
                khugepaged_do_scan();