Merge branch 'akpm' (Andrew's patch-bomb)

Merge misc fixes from Andrew Morton.

* emailed from Andrew Morton <akpm@linux-foundation.org>: (4 patches)
  frv: delete incorrect task prototypes causing compile fail
  slub: missing test for partial pages flush work in flush_all()
  fs, proc: fix ABBA deadlock in case of execution attempt of map_files/ entries
  drivers/rtc/rtc-pl031.c: configure correct wday for 2000-01-01

4 files changed, 27 insertions, 17 deletions

diff --git a/arch/frv/include/asm/processor.h b/arch/frv/include/asm/processor.h
index 81c2e271d620..9b1a92b73f60 100644
--- a/arch/frv/include/asm/processor.h
+++ b/arch/frv/include/asm/processor.h
@@ -135,10 +135,6 @@ unsigned long get_wchan(struct task_struct *p);
 #define KSTK_EIP(tsk)   ((tsk)->thread.frame0->pc)
 #define KSTK_ESP(tsk)   ((tsk)->thread.frame0->sp)
 
-/* Allocation and freeing of basic task resources. */
-extern struct task_struct *alloc_task_struct_node(int node);
-extern void free_task_struct(struct task_struct *p);
-
 #define cpu_relax()    barrier()
 
 /* data cache prefetch */
diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c
index 684ef4bbfce4..f027c063fb20 100644
--- a/drivers/rtc/rtc-pl031.c
+++ b/drivers/rtc/rtc-pl031.c
@@ -312,6 +312,7 @@ static int pl031_probe(struct amba_device *adev, const struct amba_id *id)
         int ret;
         struct pl031_local *ldata;
         struct rtc_class_ops *ops = id->data;
+        unsigned long time;
 
         ret = amba_request_regions(adev, NULL);
         if (ret)
@@ -343,6 +344,23 @@ static int pl031_probe(struct amba_device *adev, const struct amba_id *id)
                 writel(readl(ldata->base + RTC_CR) | RTC_CR_CWEN,
                        ldata->base + RTC_CR);
 
+        /*
+         * On ST PL031 variants, the RTC reset value does not provide correct
+         * weekday for 2000-01-01. Correct the erroneous sunday to saturday.
+         */
+        if (ldata->hw_designer == AMBA_VENDOR_ST) {
+                if (readl(ldata->base + RTC_YDR) == 0x2000) {
+                        time = readl(ldata->base + RTC_DR);
+                        if ((time &
+                             (RTC_MON_MASK | RTC_MDAY_MASK | RTC_WDAY_MASK))
+                            == 0x02120000) {
+                                time = time | (0x7 << RTC_WDAY_SHIFT);
+                                writel(0x2000, ldata->base + RTC_YLR);
+                                writel(time, ldata->base + RTC_LR);
+                        }
+                }
+        }
+
         ldata->rtc = rtc_device_register("pl031", &adev->dev, ops,
                                         THIS_MODULE);
         if (IS_ERR(ldata->rtc)) {
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 7d6ad98631f2..57b8159f26f3 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -2162,16 +2162,16 @@ static struct dentry *proc_map_files_lookup(struct inode *dir,
                 goto out;
 
         result = ERR_PTR(-EACCES);
-        if (lock_trace(task))
+        if (!ptrace_may_access(task, PTRACE_MODE_READ))
                 goto out_put_task;
 
         result = ERR_PTR(-ENOENT);
         if (dname_to_vma_addr(dentry, &vm_start, &vm_end))
-                goto out_unlock;
+                goto out_put_task;
 
         mm = get_task_mm(task);
         if (!mm)
-                goto out_unlock;
+                goto out_put_task;
 
         down_read(&mm->mmap_sem);
         vma = find_exact_vma(mm, vm_start, vm_end);
@@ -2183,8 +2183,6 @@ static struct dentry *proc_map_files_lookup(struct inode *dir,
 out_no_vma:
         up_read(&mm->mmap_sem);
         mmput(mm);
-out_unlock:
-        unlock_trace(task);
 out_put_task:
         put_task_struct(task);
 out:
@@ -2218,7 +2216,7 @@ proc_map_files_readdir(struct file *filp, void *dirent, filldir_t filldir)
                 goto out;
 
         ret = -EACCES;
-        if (lock_trace(task))
+        if (!ptrace_may_access(task, PTRACE_MODE_READ))
                 goto out_put_task;
 
         ret = 0;
@@ -2226,12 +2224,12 @@ proc_map_files_readdir(struct file *filp, void *dirent, filldir_t filldir)
         case 0:
                 ino = inode->i_ino;
                 if (filldir(dirent, ".", 1, 0, ino, DT_DIR) < 0)
-                        goto out_unlock;
+                        goto out_put_task;
                 filp->f_pos++;
         case 1:
                 ino = parent_ino(dentry);
                 if (filldir(dirent, "..", 2, 1, ino, DT_DIR) < 0)
-                        goto out_unlock;
+                        goto out_put_task;
                 filp->f_pos++;
         default:
         {
@@ -2242,7 +2240,7 @@ proc_map_files_readdir(struct file *filp, void *dirent, filldir_t filldir)
 
                 mm = get_task_mm(task);
                 if (!mm)
-                        goto out_unlock;
+                        goto out_put_task;
                 down_read(&mm->mmap_sem);
 
                 nr_files = 0;
@@ -2272,7 +2270,7 @@ proc_map_files_readdir(struct file *filp, void *dirent, filldir_t filldir)
                                         flex_array_free(fa);
                                 up_read(&mm->mmap_sem);
                                 mmput(mm);
-                                goto out_unlock;
+                                goto out_put_task;
                         }
                         for (i = 0, vma = mm->mmap, pos = 2; vma;
                                         vma = vma->vm_next) {
@@ -2317,8 +2315,6 @@ proc_map_files_readdir(struct file *filp, void *dirent, filldir_t filldir)
         }
         }
 
-out_unlock:
-        unlock_trace(task);
 out_put_task:
         put_task_struct(task);
 out:
diff --git a/mm/slub.c b/mm/slub.c
index ffe13fdf8144..80848cd3901c 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2040,7 +2040,7 @@ static bool has_cpu_slab(int cpu, void *info)
         struct kmem_cache *s = info;
         struct kmem_cache_cpu *c = per_cpu_ptr(s->cpu_slab, cpu);
 
-        return !!(c->page);
+        return c->page || c->partial;
 }
 
 static void flush_all(struct kmem_cache *s)