Merge branch 'cpus4096-for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'cpus4096-for-linus-3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (77 commits)
  x86: setup_per_cpu_areas() cleanup
  cpumask: fix compile error when CONFIG_NR_CPUS is not defined
  cpumask: use alloc_cpumask_var_node where appropriate
  cpumask: convert shared_cpu_map in acpi_processor* structs to cpumask_var_t
  x86: use cpumask_var_t in acpi/boot.c
  x86: cleanup some remaining usages of NR_CPUS where s/b nr_cpu_ids
  sched: put back some stack hog changes that were undone in kernel/sched.c
  x86: enable cpus display of kernel_max and offlined cpus
  ia64: cpumask fix for is_affinity_mask_valid()
  cpumask: convert RCU implementations, fix
  xtensa: define __fls
  mn10300: define __fls
  m32r: define __fls
  h8300: define __fls
  frv: define __fls
  cris: define __fls
  cpumask: CONFIG_DISABLE_OBSOLETE_CPUMASK_FUNCTIONS
  cpumask: zero extra bits in alloc_cpumask_var_node
  cpumask: replace for_each_cpu_mask_nr with for_each_cpu in kernel/time/
  cpumask: convert mm/
  ...

1 files changed, 13 insertions, 3 deletions

diff --git a/mm/pdflush.c b/mm/pdflush.c
index a0a14c4..15de509 100644
--- a/mm/pdflush.c
+++ b/mm/pdflush.c
@@ -172,7 +172,16 @@ static int __pdflush(struct pdflush_work *my_work)
 static int pdflush(void *dummy)
 {
 	struct pdflush_work my_work;
-	cpumask_t cpus_allowed;
+	cpumask_var_t cpus_allowed;
+
+	/*
+	 * Since the caller doesn't even check kthread_run() worked, let's not
+	 * freak out too much if this fails.
+	 */
+	if (!alloc_cpumask_var(&cpus_allowed, GFP_KERNEL)) {
+		printk(KERN_WARNING "pdflush failed to allocate cpumask\n");
+		return 0;
+	}
 
 	/*
 	 * pdflush can spend a lot of time doing encryption via dm-crypt.  We
@@ -187,8 +196,9 @@ static int pdflush(void *dummy)
 	 * This is needed as pdflush's are dynamically created and destroyed.
 	 * The boottime pdflush's are easily placed w/o these 2 lines.
 	 */
-	cpuset_cpus_allowed(current, &cpus_allowed);
-	set_cpus_allowed_ptr(current, &cpus_allowed);
+	cpuset_cpus_allowed(current, cpus_allowed);
+	set_cpus_allowed_ptr(current, cpus_allowed);
+	free_cpumask_var(cpus_allowed);
 
 	return __pdflush(&my_work);
 }