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

From: Andy Shevchenko
Date: Thu Sep 05 2024 - 13:16:09 EST


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@xxxxxxxxxxxxxxx>
---
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