[PATCH v1 1/1] mm/page_alloc: Mark has_unaccepted_memory() with __maybe_unused

[Andy Shevchenko <andriy.shevchenko@linux.intel.com>]

When has_unaccepted_memory() is unused, it prevents kernel builds
with clang, `make W=1` and CONFIG_WERROR=y:

mm/page_alloc.c:7036:20: error: unused function 'has_unaccepted_memory' [-Werror,-Wunused-function]
 7036 | static inline bool has_unaccepted_memory(void)
      |                    ^~~~~~~~~~~~~~~~~~~~~

Fix this by marking it with __maybe_unused (all cases for the sake of
symmetry).

See also commit 6863f5643dd7 ("kbuild: allow Clang to find unused static
inline functions for W=1 build").

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 mm/page_alloc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index c565de8f48e9..3b47f1b17ae5 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6990,7 +6990,7 @@ static bool cond_accept_memory(struct zone *zone, unsigned int order)
 	return ret;
 }
 
-static inline bool has_unaccepted_memory(void)
+static inline __maybe_unused bool has_unaccepted_memory(void)
 {
 	return static_branch_unlikely(&zones_with_unaccepted_pages);
 }
@@ -7033,7 +7033,7 @@ static bool cond_accept_memory(struct zone *zone, unsigned int order)
 	return false;
 }
 
-static inline bool has_unaccepted_memory(void)
+static inline __maybe_unused bool has_unaccepted_memory(void)
 {
 	return false;
 }
-- 
2.43.0.rc1.1336.g36b5255a03ac