ocfs2: NFS hangs in __ocfs2_cluster_lock due to race with ocfs2_unblock_lock

[pandora-kernel.git] / fs / ioprio.c

diff --git a/fs/ioprio.c b/fs/ioprio.c
index f79dab8..5b55511 100644 (file)
--- a/fs/ioprio.c
+++ b/fs/ioprio.c
@@ -169,14 +169,16 @@ out:
 
 int ioprio_best(unsigned short aprio, unsigned short bprio)
 {
-       unsigned short aclass = IOPRIO_PRIO_CLASS(aprio);
-       unsigned short bclass = IOPRIO_PRIO_CLASS(bprio);
+       unsigned short aclass;
+       unsigned short bclass;
 
-       if (aclass == IOPRIO_CLASS_NONE)
-               aclass = IOPRIO_CLASS_BE;
-       if (bclass == IOPRIO_CLASS_NONE)
-               bclass = IOPRIO_CLASS_BE;
+       if (!ioprio_valid(aprio))
+               aprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, IOPRIO_NORM);
+       if (!ioprio_valid(bprio))
+               bprio = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, IOPRIO_NORM);
 
+       aclass = IOPRIO_PRIO_CLASS(aprio);
+       bclass = IOPRIO_PRIO_CLASS(bprio);
        if (aclass == bclass)
                return min(aprio, bprio);
        if (aclass > bclass)