Commit 6e94da94 authored by Andrew Morton's avatar Andrew Morton
Browse files

mm/page_alloc: fix build with CONFIG_UNACCEPTED_MEMORY=n 

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 it by removeing the CONFIG_UNACCEPTED_MEMORY=n stub.

Link: https://lkml.kernel.org/r/20240905142220.49d93337a0abce5690e515d9@linux-foundation.org


Reported-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Closes: https://lkml.kernel.org/r/20240905171553.275054-1-andriy.shevchenko@linux.intel.com


Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent cfc81938

mm/page_alloc.c

+5 −11
Original line number Diff line number Diff line
@@ -287,7 +287,6 @@ EXPORT_SYMBOL(nr_online_nodes); 


static bool page_contains_unaccepted(struct page *page, unsigned int order);

static bool cond_accept_memory(struct zone *zone, unsigned int order);

static inline bool has_unaccepted_memory(void);

static bool __free_unaccepted(struct page *page);



int page_group_by_mobility_disabled __read_mostly;
@@ -7061,6 +7060,11 @@ static bool try_to_accept_memory_one(struct zone *zone) 
	return true;

}



static inline bool has_unaccepted_memory(void)

{

	return static_branch_unlikely(&zones_with_unaccepted_pages);

}



static bool cond_accept_memory(struct zone *zone, unsigned int order)

{

	long to_accept;
@@ -7088,11 +7092,6 @@ static bool cond_accept_memory(struct zone *zone, unsigned int order) 
	return ret;

}



static inline bool has_unaccepted_memory(void)

{

	return static_branch_unlikely(&zones_with_unaccepted_pages);

}



static bool __free_unaccepted(struct page *page)

{

	struct zone *zone = page_zone(page);
@@ -7128,11 +7127,6 @@ static bool cond_accept_memory(struct zone *zone, unsigned int order) 
	return false;

}



static inline bool has_unaccepted_memory(void)

{

	return false;

}



static bool __free_unaccepted(struct page *page)

{

	BUILD_BUG();