[PATCH 4/4] Revert "mm/page_alloc: make should_fail_alloc_page() static"

[Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>]

From: Matteo Croce <mcroce@xxxxxxxxxxxxx>

This reverts commit f7173090033c70886d925995e9dfdfb76dbb2441.

Fix an unresolved symbol error when CONFIG_DEBUG_INFO_BTF=y:

  LD      vmlinux
  BTFIDS  vmlinux
FAILED unresolved symbol should_fail_alloc_page
make: *** [Makefile:1199: vmlinux] Error 255
make: *** Deleting file 'vmlinux'

Fixes: f7173090033c ("mm/page_alloc: make should_fail_alloc_page() static")
Signed-off-by: Matteo Croce <mcroce@xxxxxxxxxxxxx>
Acked-by: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20210708191128.153796-1-mcroce@xxxxxxxxxxxxxxxxxxx
---
 mm/page_alloc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index c66f1e6204c2..3e97e68aef7a 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3820,7 +3820,7 @@ static inline bool __should_fail_alloc_page(gfp_t gfp_mask, unsigned int order)
 
 #endif /* CONFIG_FAIL_PAGE_ALLOC */
 
-static noinline bool should_fail_alloc_page(gfp_t gfp_mask, unsigned int order)
+noinline bool should_fail_alloc_page(gfp_t gfp_mask, unsigned int order)
 {
 	return __should_fail_alloc_page(gfp_mask, order);
 }
-- 
2.26.2