diff options
| -rw-r--r-- | include/linux/res_counter.h | 5 | ||||
| -rw-r--r-- | kernel/res_counter.c | 5 |
2 files changed, 9 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)); diff --git a/kernel/res_counter.c b/kernel/res_counter.c index a508c2769463..70587657dda3 100644 --- a/kernel/res_counter.c +++ b/kernel/res_counter.c @@ -93,6 +93,11 @@ ssize_t res_counter_read(struct res_counter *counter, int member, pos, buf, s - buf); } +u64 res_counter_read_u64(struct res_counter *counter, int member) +{ + return *res_counter_member(counter, member); +} + ssize_t res_counter_write(struct res_counter *counter, int member, const char __user *userbuf, size_t nbytes, loff_t *pos, int (*write_strategy)(char *st_buf, unsigned long long *val)) |