Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  Add UNPLUG traces to all appropriate places
  block: fix requeue handling in blk_queue_invalidate_tags()
  mmc: Fix sg helper copy-and-paste error
  pktcdvd: fix BUG caused by sysfs module reference semantics change
  ioprio: allow sys_ioprio_set() value of 0 to reset ioprio setting
  cfq_idle_class_timer: add paranoid checks for jiffies overflow
  cfq: fix IOPRIO_CLASS_IDLE delays
  cfq: fix IOPRIO_CLASS_IDLE accounting

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/ioprio.c b/fs/ioprio.c
index d6ff77e8e7ec..e4e01bc7f338 100644
--- a/fs/ioprio.c
+++ b/fs/ioprio.c
@@ -78,6 +78,10 @@ asmlinkage long sys_ioprio_set(int which, int who, int ioprio)
                         if (!capable(CAP_SYS_ADMIN))
                                 return -EPERM;
                         break;
+                case IOPRIO_CLASS_NONE:
+                        if (data)
+                                return -EINVAL;
+                        break;
                 default:
                         return -EINVAL;
         }