We get 1 warning when building kernel with W=1:
drivers/staging/lustre/lustre/obdclass/cl_page.c:488:6: warning: no previous 
prototype for 'cl_page_disown0' [-Wmissing-prototypes]

In fact, this function is declared in
drivers/staging/lustre/lustre/obdclass/cl_io.c, but should be
removed in a header file. thus can be recognized in other file.

So this patch moves the declaration into
drivers/staging/lustre/lustre/include/cl_object.h.

Signed-off-by: Baoyou Xie <baoyou....@linaro.org>
---
 drivers/staging/lustre/lustre/include/cl_object.h | 2 ++
 drivers/staging/lustre/lustre/obdclass/cl_io.c    | 2 --
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/lustre/lustre/include/cl_object.h 
b/drivers/staging/lustre/lustre/include/cl_object.h
index 5e63a27..41e0801 100644
--- a/drivers/staging/lustre/lustre/include/cl_object.h
+++ b/drivers/staging/lustre/lustre/include/cl_object.h
@@ -2254,6 +2254,8 @@ void cl_page_unassume(const struct lu_env *env,
                      struct cl_io *io, struct cl_page *pg);
 void cl_page_disown(const struct lu_env *env,
                    struct cl_io *io, struct cl_page *page);
+void cl_page_disown0(const struct lu_env *env,
+                    struct cl_io *io, struct cl_page *pg);
 int cl_page_is_owned(const struct cl_page *pg, const struct cl_io *io);
 
 /** @} ownership */
diff --git a/drivers/staging/lustre/lustre/obdclass/cl_io.c 
b/drivers/staging/lustre/lustre/obdclass/cl_io.c
index 4516fff..6643e78 100644
--- a/drivers/staging/lustre/lustre/obdclass/cl_io.c
+++ b/drivers/staging/lustre/lustre/obdclass/cl_io.c
@@ -936,8 +936,6 @@ void cl_page_list_splice(struct cl_page_list *list, struct 
cl_page_list *head)
 }
 EXPORT_SYMBOL(cl_page_list_splice);
 
-void cl_page_disown0(const struct lu_env *env,
-                    struct cl_io *io, struct cl_page *pg);
 
 /**
  * Disowns pages in a queue.
-- 
2.7.4

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