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    Subject[PATCH-tip v2 03/10] locking/rwsem: Move rwsem internal function declarations to rwsem-xadd.h
    Date
    We don't need to expose rwsem internal functions which are not supposed
    to be called directly from other kernel code.

    Signed-off-by: Waiman Long <longman@redhat.com>
    ---
    include/linux/rwsem.h | 7 -------
    kernel/locking/rwsem.h | 7 +++++++
    2 files changed, 7 insertions(+), 7 deletions(-)

    diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h
    index 0fc4106..b44e533 100644
    --- a/include/linux/rwsem.h
    +++ b/include/linux/rwsem.h
    @@ -46,13 +46,6 @@ struct rw_semaphore {
    */
    #define RWSEM_OWNER_UNKNOWN ((struct task_struct *)-2L)

    -extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem);
    -extern struct rw_semaphore *rwsem_down_read_failed_killable(struct rw_semaphore *sem);
    -extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem);
    -extern struct rw_semaphore *rwsem_down_write_failed_killable(struct rw_semaphore *sem);
    -extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *);
    -extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem);
    -
    /* In all implementations count != 0 means locked */
    static inline int rwsem_is_locked(struct rw_semaphore *sem)
    {
    diff --git a/kernel/locking/rwsem.h b/kernel/locking/rwsem.h
    index ee24c4f..19997c8 100644
    --- a/kernel/locking/rwsem.h
    +++ b/kernel/locking/rwsem.h
    @@ -153,6 +153,13 @@ static inline void rwsem_clear_reader_owned(struct rw_semaphore *sem)
    }
    #endif

    +extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem);
    +extern struct rw_semaphore *rwsem_down_read_failed_killable(struct rw_semaphore *sem);
    +extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem);
    +extern struct rw_semaphore *rwsem_down_write_failed_killable(struct rw_semaphore *sem);
    +extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem);
    +extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem);
    +
    /*
    * lock for reading
    */
    --
    1.8.3.1
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