nfsd: track last inode only in use_wgather case

[safe/jmp/linux-2.6] / kernel / srcu.c

diff --git a/kernel/srcu.c b/kernel/srcu.c
index 7e1979f..b0aeeaf 100644 (file)
--- a/kernel/srcu.c
+++ b/kernel/srcu.c
@@ -42,11 +42,12 @@
  * to any other function.  Each srcu_struct represents a separate domain
  * of SRCU protection.
  */
-void init_srcu_struct(struct srcu_struct *sp)
+int init_srcu_struct(struct srcu_struct *sp)
 {
        sp->completed = 0;
-       sp->per_cpu_ref = alloc_percpu(struct srcu_struct_array);
        mutex_init(&sp->mutex);
+       sp->per_cpu_ref = alloc_percpu(struct srcu_struct_array);
+       return (sp->per_cpu_ref ? 0 : -ENOMEM);
 }
 
 /*
@@ -73,7 +74,7 @@ static int srcu_readers_active_idx(struct srcu_struct *sp, int idx)
  * severe errors when invoked on an active srcu_struct.  That said, it
  * can be useful as an error check at cleanup time.
  */
-int srcu_readers_active(struct srcu_struct *sp)
+static int srcu_readers_active(struct srcu_struct *sp)
 {
        return srcu_readers_active_idx(sp, 0) + srcu_readers_active_idx(sp, 1);
 }
@@ -254,4 +255,3 @@ EXPORT_SYMBOL_GPL(srcu_read_lock);
 EXPORT_SYMBOL_GPL(srcu_read_unlock);
 EXPORT_SYMBOL_GPL(synchronize_srcu);
 EXPORT_SYMBOL_GPL(srcu_batches_completed);
-EXPORT_SYMBOL_GPL(srcu_readers_active);