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-rw-r--r--mm/Makefile6
-rw-r--r--mm/backing-dev.c3
-rw-r--r--mm/bootmem.c31
-rw-r--r--mm/bounce.c1
-rw-r--r--mm/failslab.c1
-rw-r--r--mm/filemap.c2
-rw-r--r--mm/filemap_xip.c1
-rw-r--r--mm/hugetlb.c2
-rw-r--r--mm/kmemleak.c1
-rw-r--r--mm/ksm.c2
-rw-r--r--mm/memcontrol.c68
-rw-r--r--mm/memory-failure.c1
-rw-r--r--mm/memory.c3
-rw-r--r--mm/mempolicy.c51
-rw-r--r--mm/migrate.c1
-rw-r--r--mm/mincore.c2
-rw-r--r--mm/mmu_context.c1
-rw-r--r--mm/mmu_notifier.c1
-rw-r--r--mm/mprotect.c1
-rw-r--r--mm/mremap.c1
-rw-r--r--mm/nommu.c13
-rw-r--r--mm/oom_kill.c1
-rw-r--r--mm/page_io.c1
-rw-r--r--mm/pagewalk.c47
-rw-r--r--mm/percpu.c26
-rw-r--r--mm/percpu_up.c30
-rw-r--r--mm/quicklist.c1
-rw-r--r--mm/readahead.c3
-rw-r--r--mm/rmap.c1
-rw-r--r--mm/slab.c13
-rw-r--r--mm/slub.c3
-rw-r--r--mm/sparse-vmemmap.c1
-rw-r--r--mm/sparse.c1
-rw-r--r--mm/swap.c1
-rw-r--r--mm/swap_state.c1
-rw-r--r--mm/truncate.c1
-rw-r--r--mm/util.c21
-rw-r--r--mm/vmscan.c25
-rw-r--r--mm/vmstat.c1
39 files changed, 249 insertions, 122 deletions
diff --git a/mm/Makefile b/mm/Makefile
index 7a68d2a..6c2a73a 100644
--- a/mm/Makefile
+++ b/mm/Makefile
@@ -33,7 +33,11 @@ obj-$(CONFIG_FAILSLAB) += failslab.o
obj-$(CONFIG_MEMORY_HOTPLUG) += memory_hotplug.o
obj-$(CONFIG_FS_XIP) += filemap_xip.o
obj-$(CONFIG_MIGRATION) += migrate.o
-obj-$(CONFIG_SMP) += percpu.o
+ifdef CONFIG_SMP
+obj-y += percpu.o
+else
+obj-y += percpu_up.o
+endif
obj-$(CONFIG_QUICKLIST) += quicklist.o
obj-$(CONFIG_CGROUP_MEM_RES_CTLR) += memcontrol.o page_cgroup.o
obj-$(CONFIG_MEMORY_FAILURE) += memory-failure.o
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 0e8ca03..f13e067 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -227,6 +227,9 @@ static struct device_attribute bdi_dev_attrs[] = {
static __init int bdi_class_init(void)
{
bdi_class = class_create(THIS_MODULE, "bdi");
+ if (IS_ERR(bdi_class))
+ return PTR_ERR(bdi_class);
+
bdi_class->dev_attrs = bdi_dev_attrs;
bdi_debug_init();
return 0;
diff --git a/mm/bootmem.c b/mm/bootmem.c
index d7c791e..58c66cc 100644
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -10,6 +10,7 @@
*/
#include <linux/init.h>
#include <linux/pfn.h>
+#include <linux/slab.h>
#include <linux/bootmem.h>
#include <linux/module.h>
#include <linux/kmemleak.h>
@@ -180,19 +181,12 @@ static void __init __free_pages_memory(unsigned long start, unsigned long end)
end_aligned = end & ~(BITS_PER_LONG - 1);
if (end_aligned <= start_aligned) {
-#if 1
- printk(KERN_DEBUG " %lx - %lx\n", start, end);
-#endif
for (i = start; i < end; i++)
__free_pages_bootmem(pfn_to_page(i), 0);
return;
}
-#if 1
- printk(KERN_DEBUG " %lx %lx - %lx %lx\n",
- start, start_aligned, end_aligned, end);
-#endif
for (i = start; i < start_aligned; i++)
__free_pages_bootmem(pfn_to_page(i), 0);
@@ -310,9 +304,22 @@ unsigned long __init free_all_bootmem_node(pg_data_t *pgdat)
unsigned long __init free_all_bootmem(void)
{
#ifdef CONFIG_NO_BOOTMEM
- return free_all_memory_core_early(NODE_DATA(0)->node_id);
+ /*
+ * We need to use MAX_NUMNODES instead of NODE_DATA(0)->node_id
+ * because in some case like Node0 doesnt have RAM installed
+ * low ram will be on Node1
+ * Use MAX_NUMNODES will make sure all ranges in early_node_map[]
+ * will be used instead of only Node0 related
+ */
+ return free_all_memory_core_early(MAX_NUMNODES);
#else
- return free_all_bootmem_core(NODE_DATA(0)->bdata);
+ unsigned long total_pages = 0;
+ bootmem_data_t *bdata;
+
+ list_for_each_entry(bdata, &bdata_list, list)
+ total_pages += free_all_bootmem_core(bdata);
+
+ return total_pages;
#endif
}
@@ -428,9 +435,6 @@ void __init free_bootmem_node(pg_data_t *pgdat, unsigned long physaddr,
{
#ifdef CONFIG_NO_BOOTMEM
free_early(physaddr, physaddr + size);
-#if 0
- printk(KERN_DEBUG "free %lx %lx\n", physaddr, size);
-#endif
#else
unsigned long start, end;
@@ -456,9 +460,6 @@ void __init free_bootmem(unsigned long addr, unsigned long size)
{
#ifdef CONFIG_NO_BOOTMEM
free_early(addr, addr + size);
-#if 0
- printk(KERN_DEBUG "free %lx %lx\n", addr, size);
-#endif
#else
unsigned long start, end;
diff --git a/mm/bounce.c b/mm/bounce.c
index a2b76a5..13b6dad 100644
--- a/mm/bounce.c
+++ b/mm/bounce.c
@@ -6,6 +6,7 @@
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/swap.h>
+#include <linux/gfp.h>
#include <linux/bio.h>
#include <linux/pagemap.h>
#include <linux/mempool.h>
diff --git a/mm/failslab.c b/mm/failslab.c
index bb41f98..c5f88f2 100644
--- a/mm/failslab.c
+++ b/mm/failslab.c
@@ -1,5 +1,4 @@
#include <linux/fault-inject.h>
-#include <linux/gfp.h>
#include <linux/slab.h>
static struct {
diff --git a/mm/filemap.c b/mm/filemap.c
index 045b31c..140ebda 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -10,13 +10,13 @@
* the NFS filesystem used to do this differently, for example)
*/
#include <linux/module.h>
-#include <linux/slab.h>
#include <linux/compiler.h>
#include <linux/fs.h>
#include <linux/uaccess.h>
#include <linux/aio.h>
#include <linux/capability.h>
#include <linux/kernel_stat.h>
+#include <linux/gfp.h>
#include <linux/mm.h>
#include <linux/swap.h>
#include <linux/mman.h>
diff --git a/mm/filemap_xip.c b/mm/filemap_xip.c
index 78b94f0..83364df 100644
--- a/mm/filemap_xip.c
+++ b/mm/filemap_xip.c
@@ -17,6 +17,7 @@
#include <linux/sched.h>
#include <linux/seqlock.h>
#include <linux/mutex.h>
+#include <linux/gfp.h>
#include <asm/tlbflush.h>
#include <asm/io.h>
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 3a5aeb3..6034dc9 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2,7 +2,6 @@
* Generic hugetlb support.
* (C) William Irwin, April 2004
*/
-#include <linux/gfp.h>
#include <linux/list.h>
#include <linux/init.h>
#include <linux/module.h>
@@ -18,6 +17,7 @@
#include <linux/mutex.h>
#include <linux/bootmem.h>
#include <linux/sysfs.h>
+#include <linux/slab.h>
#include <asm/page.h>
#include <asm/pgtable.h>
diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index 5b069e4..2c0d032 100644
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -72,7 +72,6 @@
#include <linux/module.h>
#include <linux/kthread.h>
#include <linux/prio_tree.h>
-#include <linux/gfp.h>
#include <linux/fs.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
diff --git a/mm/ksm.c b/mm/ksm.c
index a93f1b7..8cdfc2a 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -751,7 +751,7 @@ static int write_protect_page(struct vm_area_struct *vma, struct page *page,
* page
*/
if (page_mapcount(page) + 1 + swapped != page_count(page)) {
- set_pte_at_notify(mm, addr, ptep, entry);
+ set_pte_at(mm, addr, ptep, entry);
goto out_unlock;
}
entry = pte_wrprotect(entry);
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 7973b52..f4ede99 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1359,16 +1359,19 @@ void mem_cgroup_update_file_mapped(struct page *page, int val)
lock_page_cgroup(pc);
mem = pc->mem_cgroup;
- if (!mem)
- goto done;
-
- if (!PageCgroupUsed(pc))
+ if (!mem || !PageCgroupUsed(pc))
goto done;
/*
* Preemption is already disabled. We can use __this_cpu_xxx
*/
- __this_cpu_add(mem->stat->count[MEM_CGROUP_STAT_FILE_MAPPED], val);
+ if (val > 0) {
+ __this_cpu_inc(mem->stat->count[MEM_CGROUP_STAT_FILE_MAPPED]);
+ SetPageCgroupFileMapped(pc);
+ } else {
+ __this_cpu_dec(mem->stat->count[MEM_CGROUP_STAT_FILE_MAPPED]);
+ ClearPageCgroupFileMapped(pc);
+ }
done:
unlock_page_cgroup(pc);
@@ -1801,16 +1804,13 @@ static void __mem_cgroup_commit_charge(struct mem_cgroup *mem,
static void __mem_cgroup_move_account(struct page_cgroup *pc,
struct mem_cgroup *from, struct mem_cgroup *to, bool uncharge)
{
- struct page *page;
-
VM_BUG_ON(from == to);
VM_BUG_ON(PageLRU(pc->page));
VM_BUG_ON(!PageCgroupLocked(pc));
VM_BUG_ON(!PageCgroupUsed(pc));
VM_BUG_ON(pc->mem_cgroup != from);
- page = pc->page;
- if (page_mapped(page) && !PageAnon(page)) {
+ if (PageCgroupFileMapped(pc)) {
/* Update mapped_file data for mem_cgroup */
preempt_disable();
__this_cpu_dec(from->stat->count[MEM_CGROUP_STAT_FILE_MAPPED]);
@@ -3691,8 +3691,10 @@ static struct mem_cgroup *mem_cgroup_alloc(void)
else
mem = vmalloc(size);
- if (mem)
- memset(mem, 0, size);
+ if (!mem)
+ return NULL;
+
+ memset(mem, 0, size);
mem->stat = alloc_percpu(struct mem_cgroup_stat_cpu);
if (!mem->stat) {
if (size < PAGE_SIZE)
@@ -3946,28 +3948,6 @@ one_by_one:
}
return ret;
}
-#else /* !CONFIG_MMU */
-static int mem_cgroup_can_attach(struct cgroup_subsys *ss,
- struct cgroup *cgroup,
- struct task_struct *p,
- bool threadgroup)
-{
- return 0;
-}
-static void mem_cgroup_cancel_attach(struct cgroup_subsys *ss,
- struct cgroup *cgroup,
- struct task_struct *p,
- bool threadgroup)
-{
-}
-static void mem_cgroup_move_task(struct cgroup_subsys *ss,
- struct cgroup *cont,
- struct cgroup *old_cont,
- struct task_struct *p,
- bool threadgroup)
-{
-}
-#endif
/**
* is_target_pte_for_mc - check a pte whether it is valid for move charge
@@ -4330,6 +4310,28 @@ static void mem_cgroup_move_task(struct cgroup_subsys *ss,
}
mem_cgroup_clear_mc();
}
+#else /* !CONFIG_MMU */
+static int mem_cgroup_can_attach(struct cgroup_subsys *ss,
+ struct cgroup *cgroup,
+ struct task_struct *p,
+ bool threadgroup)
+{
+ return 0;
+}
+static void mem_cgroup_cancel_attach(struct cgroup_subsys *ss,
+ struct cgroup *cgroup,
+ struct task_struct *p,
+ bool threadgroup)
+{
+}
+static void mem_cgroup_move_task(struct cgroup_subsys *ss,
+ struct cgroup *cont,
+ struct cgroup *old_cont,
+ struct task_struct *p,
+ bool threadgroup)
+{
+}
+#endif
struct cgroup_subsys mem_cgroup_subsys = {
.name = "memory",
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index d1f3351..620b0b4 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -44,6 +44,7 @@
#include <linux/migrate.h>
#include <linux/page-isolation.h>
#include <linux/suspend.h>
+#include <linux/slab.h>
#include "internal.h"
int sysctl_memory_failure_early_kill __read_mostly = 0;
diff --git a/mm/memory.c b/mm/memory.c
index 5b7f200..833952d 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -56,6 +56,7 @@
#include <linux/kallsyms.h>
#include <linux/swapops.h>
#include <linux/elf.h>
+#include <linux/gfp.h>
#include <asm/io.h>
#include <asm/pgalloc.h>
@@ -124,7 +125,7 @@ core_initcall(init_zero_pfn);
#if defined(SPLIT_RSS_COUNTING)
-void __sync_task_rss_stat(struct task_struct *task, struct mm_struct *mm)
+static void __sync_task_rss_stat(struct task_struct *task, struct mm_struct *mm)
{
int i;
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 643f66e..08f40a2 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -73,7 +73,6 @@
#include <linux/sched.h>
#include <linux/nodemask.h>
#include <linux/cpuset.h>
-#include <linux/gfp.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/module.h>
@@ -806,9 +805,13 @@ static long do_get_mempolicy(int *policy, nodemask_t *nmask,
err = 0;
if (nmask) {
- task_lock(current);
- get_policy_nodemask(pol, nmask);
- task_unlock(current);
+ if (mpol_store_user_nodemask(pol)) {
+ *nmask = pol->w.user_nodemask;
+ } else {
+ task_lock(current);
+ get_policy_nodemask(pol, nmask);
+ task_unlock(current);
+ }
}
out:
@@ -2195,8 +2198,8 @@ int mpol_parse_str(char *str, struct mempolicy **mpol, int no_context)
char *rest = nodelist;
while (isdigit(*rest))
rest++;
- if (!*rest)
- err = 0;
+ if (*rest)
+ goto out;
}
break;
case MPOL_INTERLEAVE:
@@ -2205,7 +2208,6 @@ int mpol_parse_str(char *str, struct mempolicy **mpol, int no_context)
*/
if (!nodelist)
nodes = node_states[N_HIGH_MEMORY];
- err = 0;
break;
case MPOL_LOCAL:
/*
@@ -2215,11 +2217,19 @@ int mpol_parse_str(char *str, struct mempolicy **mpol, int no_context)
goto out;
mode = MPOL_PREFERRED;
break;
-
- /*
- * case MPOL_BIND: mpol_new() enforces non-empty nodemask.
- * case MPOL_DEFAULT: mpol_new() enforces empty nodemask, ignores flags.
- */
+ case MPOL_DEFAULT:
+ /*
+ * Insist on a empty nodelist
+ */
+ if (!nodelist)
+ err = 0;
+ goto out;
+ case MPOL_BIND:
+ /*
+ * Insist on a nodelist
+ */
+ if (!nodelist)
+ goto out;
}
mode_flags = 0;
@@ -2233,13 +2243,14 @@ int mpol_parse_str(char *str, struct mempolicy **mpol, int no_context)
else if (!strcmp(flags, "relative"))
mode_flags |= MPOL_F_RELATIVE_NODES;
else
- err = 1;
+ goto out;
}
new = mpol_new(mode, mode_flags, &nodes);
if (IS_ERR(new))
- err = 1;
- else {
+ goto out;
+
+ {
int ret;
NODEMASK_SCRATCH(scratch);
if (scratch) {
@@ -2250,13 +2261,15 @@ int mpol_parse_str(char *str, struct mempolicy **mpol, int no_context)
ret = -ENOMEM;
NODEMASK_SCRATCH_FREE(scratch);
if (ret) {
- err = 1;
mpol_put(new);
- } else if (no_context) {
- /* save for contextualization */
- new->w.user_nodemask = nodes;
+ goto out;
}
}
+ err = 0;
+ if (no_context) {
+ /* save for contextualization */
+ new->w.user_nodemask = nodes;
+ }
out:
/* Restore string for error message */
diff --git a/mm/migrate.c b/mm/migrate.c
index 88000b8..d3f3f7f 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -32,6 +32,7 @@
#include <linux/security.h>
#include <linux/memcontrol.h>
#include <linux/syscalls.h>
+#include <linux/gfp.h>
#include "internal.h"
diff --git a/mm/mincore.c b/mm/mincore.c
index 7a3436e..f77433c 100644
--- a/mm/mincore.c
+++ b/mm/mincore.c
@@ -7,8 +7,8 @@
/*
* The mincore() system call.
*/
-#include <linux/slab.h>
#include <linux/pagemap.h>
+#include <linux/gfp.h>
#include <linux/mm.h>
#include <linux/mman.h>
#include <linux/syscalls.h>
diff --git a/mm/mmu_context.c b/mm/mmu_context.c
index 0777654..9e82e93 100644
--- a/mm/mmu_context.c
+++ b/mm/mmu_context.c
@@ -53,6 +53,7 @@ void unuse_mm(struct mm_struct *mm)
struct task_struct *tsk = current;
task_lock(tsk);
+ sync_mm_rss(tsk, mm);
tsk->mm = NULL;
/* active_mm is still 'mm' */
enter_lazy_tlb(mm, tsk);
diff --git a/mm/mmu_notifier.c b/mm/mmu_notifier.c
index 7e33f2c..438951d 100644
--- a/mm/mmu_notifier.c
+++ b/mm/mmu_notifier.c
@@ -16,6 +16,7 @@
#include <linux/err.h>
#include <linux/rcupdate.h>
#include <linux/sched.h>
+#include <linux/slab.h>
/*
* This function can't run concurrently against mmu_notifier_register
diff --git a/mm/mprotect.c b/mm/mprotect.c
index 8bc969d..2d1bf7c 100644
--- a/mm/mprotect.c
+++ b/mm/mprotect.c
@@ -10,7 +10,6 @@
#include <linux/mm.h>
#include <linux/hugetlb.h>
-#include <linux/slab.h>
#include <linux/shm.h>
#include <linux/mman.h>
#include <linux/fs.h>
diff --git a/mm/mremap.c b/mm/mremap.c
index e9c75ef..cde56ee 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -9,7 +9,6 @@
#include <linux/mm.h>
#include <linux/hugetlb.h>
-#include <linux/slab.h>
#include <linux/shm.h>
#include <linux/ksm.h>
#include <linux/mman.h>
diff --git a/mm/nommu.c b/mm/nommu.c
index 605ace8..63fa17d 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -146,7 +146,7 @@ int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
(VM_MAYREAD | VM_MAYWRITE) : (VM_READ | VM_WRITE);
for (i = 0; i < nr_pages; i++) {
- vma = find_extend_vma(mm, start);
+ vma = find_vma(mm, start);
if (!vma)
goto finish_or_fault;
@@ -162,7 +162,7 @@ int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
}
if (vmas)
vmas[i] = vma;
- start += PAGE_SIZE;
+ start = (start + PAGE_SIZE) & PAGE_MASK;
}
return i;
@@ -764,7 +764,7 @@ EXPORT_SYMBOL(find_vma);
*/
struct vm_area_struct *find_extend_vma(struct mm_struct *mm, unsigned long addr)
{
- return find_vma(mm, addr & PAGE_MASK);
+ return find_vma(mm, addr);
}
/*
@@ -1040,10 +1040,9 @@ static int do_mmap_shared_file(struct vm_area_struct *vma)
if (ret != -ENOSYS)
return ret;
- /* getting an ENOSYS error indicates that direct mmap isn't
- * possible (as opposed to tried but failed) so we'll fall
- * through to making a private copy of the data and mapping
- * that if we can */
+ /* getting -ENOSYS indicates that direct mmap isn't possible (as
+ * opposed to tried but failed) so we can only give a suitable error as
+ * it's not possible to make a private copy if MAP_SHARED was given */
return -ENODEV;
}
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 9b223af..b68e802 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -18,6 +18,7 @@
#include <linux/oom.h>
#include <linux/mm.h>
#include <linux/err.h>
+#include <linux/gfp.h>
#include <linux/sched.h>
#include <linux/swap.h>
#include <linux/timex.h>
diff --git a/mm/page_io.c b/mm/page_io.c
index a19af95..31a3b96 100644
--- a/mm/page_io.c
+++ b/mm/page_io.c
@@ -12,6 +12,7 @@
#include <linux/mm.h>
#include <linux/kernel_stat.h>
+#include <linux/gfp.h>
#include <linux/pagemap.h>
#include <linux/swap.h>
#include <linux/bio.h>
diff --git a/mm/pagewalk.c b/mm/pagewalk.c
index 7b47a57..8b1a2ce 100644
--- a/mm/pagewalk.c
+++ b/mm/pagewalk.c
@@ -80,6 +80,37 @@ static int walk_pud_range(pgd_t *pgd, unsigned long addr, unsigned long end,
return err;
}
+#ifdef CONFIG_HUGETLB_PAGE
+static unsigned long hugetlb_entry_end(struct hstate *h, unsigned long addr,
+ unsigned long end)
+{
+ unsigned long boundary = (addr & huge_page_mask(h)) + huge_page_size(h);
+ return boundary < end ? boundary : end;
+}
+
+static int walk_hugetlb_range(struct vm_area_struct *vma,
+ unsigned long addr, unsigned long end,
+ struct mm_walk *walk)
+{
+ struct hstate *h = hstate_vma(vma);
+ unsigned long next;
+ unsigned long hmask = huge_page_mask(h);
+ pte_t *pte;
+ int err = 0;
+
+ do {
+ next = hugetlb_entry_end(h, addr, end);
+ pte = huge_pte_offset(walk->mm, addr & hmask);
+ if (pte && walk->hugetlb_entry)
+ err = walk->hugetlb_entry(pte, hmask, addr, next, walk);
+ if (err)
+ return err;
+ } while (addr = next, addr != end);
+
+ return 0;
+}
+#endif
+
/**
* walk_page_range - walk a memory map's page tables with a callback
* @mm: memory map to walk
@@ -128,20 +159,16 @@ int walk_page_range(unsigned long addr, unsigned long end,
vma = find_vma(walk->mm, addr);
#ifdef CONFIG_HUGETLB_PAGE
if (vma && is_vm_hugetlb_page(vma)) {
- pte_t *pte;
- struct hstate *hs;
-
if (vma->vm_end < next)
next = vma->vm_end;
- hs = hstate_vma(vma);
- pte = huge_pte_offset(walk->mm,
- addr & huge_page_mask(hs));
- if (pte && !huge_pte_none(huge_ptep_get(pte))
- && walk->hugetlb_entry)
- err = walk->hugetlb_entry(pte, addr,
- next, walk);
+ /*
+ * Hugepage is very tightly coupled with vma, so
+ * walk through hugetlb entries within a given vma.
+ */
+ err = walk_hugetlb_range(vma, addr, next, walk);
if (err)
break;
+ pgd = pgd_offset(walk->mm, next);
continue;
}
#endif
diff --git a/mm/percpu.c b/mm/percpu.c
index 768419d..6e09741 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -1304,6 +1304,32 @@ void free_percpu(void __percpu *ptr)
EXPORT_SYMBOL_GPL(free_percpu);
/**
+ * is_kernel_percpu_address - test whether address is from static percpu area
+ * @addr: address to test
+ *
+ * Test whether @addr belongs to in-kernel static percpu area. Module
+ * static percpu areas are not considered. For those, use
+ * is_module_percpu_address().
+ *
+ * RETURNS:
+ * %true if @addr is from in-kernel static percpu area, %false otherwise.
+ */
+bool is_kernel_percpu_address(unsigned long addr)
+{
+ const size_t static_size = __per_cpu_end - __per_cpu_start;
+ void __percpu *base = __addr_to_pcpu_ptr(pcpu_base_addr);
+ unsigned int cpu;
+
+ for_each_possible_cpu(cpu) {
+ void *start = per_cpu_ptr(base, cpu);
+
+ if ((void *)addr >= start && (void *)addr < start + static_size)
+ return true;
+ }
+ return false;
+}
+
+/**
* per_cpu_ptr_to_phys - convert translated percpu address to physical address
* @addr: the address to be converted to physical address
*
diff --git a/mm/percpu_up.c b/mm/percpu_up.c
new file mode 100644
index 0000000..c4351c7
--- /dev/null
+++ b/mm/percpu_up.c
@@ -0,0 +1,30 @@
+/*
+ * mm/percpu_up.c - dummy percpu memory allocator implementation for UP
+ */
+
+#include <linux/module.h>
+#include <linux/percpu.h>
+#include <linux/slab.h>
+
+void __percpu *__alloc_percpu(size_t size, size_t align)
+{
+ /*
+ * Can't easily make larger alignment work with kmalloc. WARN
+ * on it. Larger alignment should only be used for module
+ * percpu sections on SMP for which this path isn't used.
+ */
+ WARN_ON_ONCE(align > SMP_CACHE_BYTES);
+ return kzalloc(size, GFP_KERNEL);
+}
+EXPORT_SYMBOL_GPL(__alloc_percpu);
+
+void free_percpu(void __percpu *p)
+{
+ kfree(p);
+}
+EXPORT_SYMBOL_GPL(free_percpu);
+
+phys_addr_t per_cpu_ptr_to_phys(void *addr)
+{
+ return __pa(addr);
+}
diff --git a/mm/quicklist.c b/mm/quicklist.c
index 6633965..2876349 100644
--- a/mm/quicklist.c
+++ b/mm/quicklist.c
@@ -14,6 +14,7 @@
*/
#include <linux/kernel.h>
+#include <linux/gfp.h>
#include <linux/mm.h>
#include <linux/mmzone.h>
#include <linux/module.h>
diff --git a/mm/readahead.c b/mm/readahead.c
index 337b20e..dfa9a1a 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -9,6 +9,7 @@
#include <linux/kernel.h>
#include <linux/fs.h>
+#include <linux/gfp.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/blkdev.h>
@@ -502,7 +503,7 @@ void page_cache_sync_readahead(struct address_space *mapping,
return;
/* be dumb */
- if (filp->f_mode & FMODE_RANDOM) {
+ if (filp && (filp->f_mode & FMODE_RANDOM)) {
force_page_cache_readahead(mapping, filp, offset, req_size);
return;
}
diff --git a/mm/rmap.c b/mm/rmap.c
index fcd593c9..eaa7a09 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -232,6 +232,7 @@ int anon_vma_fork(struct vm_area_struct *vma, struct vm_area_struct *pvma)
out_error_free_anon_vma:
anon_vma_free(anon_vma);
out_error:
+ unlink_anon_vmas(vma);
return -ENOMEM;
}
diff --git a/mm/slab.c b/mm/slab.c
index a9f325b..bac0f4f 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -3602,21 +3602,10 @@ EXPORT_SYMBOL(kmem_cache_alloc_notrace);
*/
int kmem_ptr_validate(struct kmem_cache *cachep, const void *ptr)
{
- unsigned long addr = (unsigned long)ptr;
- unsigned long min_addr = PAGE_OFFSET;
- unsigned long align_mask = BYTES_PER_WORD - 1;
unsigned long size = cachep->buffer_size;
struct page *page;
- if (unlikely(addr < min_addr))
- goto out;
- if (unlikely(addr > (unsigned long)high_memory - size))
- goto out;
- if (unlikely(addr & align_mask))
- goto out;
- if (unlikely(!kern_addr_valid(addr)))
- goto out;
- if (unlikely(!kern_addr_valid(addr + size - 1)))
+ if (unlikely(!kern_ptr_validate(ptr, size)))
goto out;
page = virt_to_page(ptr);
if (unlikely(!PageSlab(page)))
diff --git a/mm/slub.c b/mm/slub.c
index b364844..7d6c8b1 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2386,6 +2386,9 @@ int kmem_ptr_validate(struct kmem_cache *s, const void *object)
{
struct page *page;
+ if (!kern_ptr_validate(object, s->size))
+ return 0;
+
page = get_object_page(object);
if (!page || s != page->slab)
diff --git a/mm/sparse-vmemmap.c b/mm/sparse-vmemmap.c
index 392b9bb..aa33fd6 100644
--- a/mm/sparse-vmemmap.c
+++ b/mm/sparse-vmemmap.c
@@ -22,6 +22,7 @@
#include <linux/bootmem.h>
#include <linux/highmem.h>
#include <linux/module.h>
+#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/vmalloc.h>
#include <linux/sched.h>
diff --git a/mm/sparse.c b/mm/sparse.c
index 22896d5..dc0cc4d 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -2,6 +2,7 @@
* sparse memory mappings.
*/
#include <linux/mm.h>
+#include <linux/slab.h>
#include <linux/mmzone.h>
#include <linux/bootmem.h>
#include <linux/highmem.h>
diff --git a/mm/swap.c b/mm/swap.c
index 9036b89..7cd60bf 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -30,6 +30,7 @@
#include <linux/notifier.h>
#include <linux/backing-dev.h>
#include <linux/memcontrol.h>
+#include <linux/gfp.h>
#include "internal.h"
diff --git a/mm/swap_state.c b/mm/swap_state.c
index 6d1daeb..e10f583 100644
--- a/mm/swap_state.c
+++ b/mm/swap_state.c
@@ -8,6 +8,7 @@
*/
#include <linux/module.h>
#include <linux/mm.h>
+#include <linux/gfp.h>
#include <linux/kernel_stat.h>
#include <linux/swap.h>
#include <linux/swapops.h>
diff --git a/mm/truncate.c b/mm/truncate.c
index e87e372..f42675a 100644
--- a/mm/truncate.c
+++ b/mm/truncate.c
@@ -9,6 +9,7 @@
#include <linux/kernel.h>
#include <linux/backing-dev.h>
+#include <linux/gfp.h>
#include <linux/mm.h>
#include <linux/swap.h>
#include <linux/module.h>
diff --git a/mm/util.c b/mm/util.c
index 834db7b..f5712e8 100644
--- a/mm/util.c
+++ b/mm/util.c
@@ -186,6 +186,27 @@ void kzfree(const void *p)
}
EXPORT_SYMBOL(kzfree);
+int kern_ptr_validate(const void *ptr, unsigned long size)
+{
+ unsigned long addr = (unsigned long)ptr;
+ unsigned long min_addr = PAGE_OFFSET;
+ unsigned long align_mask = sizeof(void *) - 1;
+
+ if (unlikely(addr < min_addr))
+ goto out;
+ if (unlikely(addr > (unsigned long)high_memory - size))
+ goto out;
+ if (unlikely(addr & align_mask))
+ goto out;
+ if (unlikely(!kern_addr_valid(addr)))
+ goto out;
+ if (unlikely(!kern_addr_valid(addr + size - 1)))
+ goto out;
+ return 1;
+out:
+ return 0;
+}
+
/*
* strndup_user - duplicate an existing string from user space
* @s: The string to duplicate
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 79c8098..3ff3311 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -13,7 +13,7 @@
#include <linux/mm.h>
#include <linux/module.h>
-#include <linux/slab.h>
+#include <linux/gfp.h>
#include <linux/kernel_stat.h>
#include <linux/swap.h>
#include <linux/pagemap.h>
@@ -1535,13 +1535,6 @@ static void get_scan_ratio(struct zone *zone, struct scan_control *sc,
unsigned long ap, fp;
struct zone_reclaim_stat *reclaim_stat = get_reclaim_stat(zone, sc);
- /* If we have no swap space, do not bother scanning anon pages. */
- if (!sc->may_swap || (nr_swap_pages <= 0)) {
- percent[0] = 0;
- percent[1] = 100;
- return;
- }
-
anon = zone_nr_lru_pages(zone, sc, LRU_ACTIVE_ANON) +
zone_nr_lru_pages(zone, sc, LRU_INACTIVE_ANON);
file = zone_nr_lru_pages(zone, sc, LRU_ACTIVE_FILE) +
@@ -1639,20 +1632,22 @@ static void shrink_zone(int priority, struct zone *zone,
unsigned long nr_reclaimed = sc->nr_reclaimed;
unsigned long nr_to_reclaim = sc->nr_to_reclaim;
struct zone_reclaim_stat *reclaim_stat = get_reclaim_stat(zone, sc);
+ int noswap = 0;
- get_scan_ratio(zone, sc, percent);
+ /* If we have no swap space, do not bother scanning anon pages. */
+ if (!sc->may_swap || (nr_swap_pages <= 0)) {
+ noswap = 1;
+ percent[0] = 0;
+ percent[1] = 100;
+ } else
+ get_scan_ratio(zone, sc, percent);
for_each_evictable_lru(l) {
int file = is_file_lru(l);
unsigned long scan;
- if (percent[file] == 0) {
- nr[l] = 0;
- continue;
- }
-
scan = zone_nr_lru_pages(zone, sc, l);
- if (priority) {
+ if (priority || noswap) {
scan >>= priority;
scan = (scan * percent[file]) / 100;
}
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 7f760cb..fa12ea3 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -12,6 +12,7 @@
#include <linux/mm.h>
#include <linux/err.h>
#include <linux/module.h>
+#include <linux/slab.h>
#include <linux/cpu.h>
#include <linux/vmstat.h>
#include <linux/sched.h>
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