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-rw-r--r--include/linux/res_counter.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/res_counter.h b/include/linux/res_counter.h
index 61363ce896d5..8cb1ecd420a9 100644
--- 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));