CGroup API files: add res_counter_read_u64()

[safe/jmp/linux-2.6] / include / linux / res_counter.h

diff --git a/include/linux/res_counter.h b/include/linux/res_counter.h
index 61363ce..8cb1ecd 100644 (file)
--- a/include/linux/res_counter.h
+++ b/include/linux/res_counter.h
@@ -39,8 +39,9 @@ struct res_counter {
        spinlock_t lock;
 };
 
-/*
+/**
  * Helpers to interact with userspace
+ * res_counter_read_u64() - returns the value of the specified member.
  * res_counter_read/_write - put/get the specified fields from the
  * res_counter struct to/from the user
  *
@@ -51,6 +52,8 @@ struct res_counter {
  * @pos:     and the offset.
  */
 
+u64 res_counter_read_u64(struct res_counter *counter, int member);
+
 ssize_t res_counter_read(struct res_counter *counter, int member,
                const char __user *buf, size_t nbytes, loff_t *pos,
                int (*read_strategy)(unsigned long long val, char *s));