[PATCH 1/2] mm, fault-injection: declare should_fail_alloc_page()

[PATCH 1/2] mm, fault-injection: declare should_fail_alloc_page()

[Vlastimil Babka]

The mm/ directory can almost fully be built with W=1, which would help
in local development. One remaining issue is missing prototype for
should_fail_alloc_page(). Thus add it next to the should_failslab()
prototype.

Note the previous attempt by commit f7173090033c ("mm/page_alloc: make
should_fail_alloc_page() static") had to be reverted by commit
54aa386661fe as it caused an unresolved symbol error with
CONFIG_DEBUG_INFO_BTF=y

Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
---
 include/linux/fault-inject.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/fault-inject.h b/include/linux/fault-inject.h
index e525f6957c49..2d04f6448cde 100644
--- a/include/linux/fault-inject.h
+++ b/include/linux/fault-inject.h
@@ -64,6 +64,8 @@ static inline struct dentry *fault_create_debugfs_attr(const char *name,
 
 struct kmem_cache;
 
+bool should_fail_alloc_page(gfp_t gfp_mask, unsigned int order);
+
 int should_failslab(struct kmem_cache *s, gfp_t gfpflags);
 #ifdef CONFIG_FAILSLAB
 extern bool __should_failslab(struct kmem_cache *s, gfp_t gfpflags);
-- 
2.35.1

[PATCH 2/2] mm/early_ioremap: declare early_memremap_pgprot_adjust()

[Vlastimil Babka]

The mm/ directory can almost fully be built with W=1, which would help
in local development. One remaining issue is missing prototype for
early_memremap_pgprot_adjust().

Thus add a declaration for this function. Use mm/internal.h instead of
asm/early_ioremap.h to avoid missing type definitions and unnecessary
exposure.

Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
---
 mm/early_ioremap.c | 1 +
 mm/internal.h      | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/mm/early_ioremap.c b/mm/early_ioremap.c
index 74984c23a87e..9bc12e526ed0 100644
--- a/mm/early_ioremap.c
+++ b/mm/early_ioremap.c
@@ -17,6 +17,7 @@
 #include <linux/vmalloc.h>
 #include <asm/fixmap.h>
 #include <asm/early_ioremap.h>
+#include "internal.h"
 
 #ifdef CONFIG_MMU
 static int early_ioremap_debug __initdata;
diff --git a/mm/internal.h b/mm/internal.h
index d80300392a19..e3e2a3c5f655 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -154,6 +154,12 @@ extern unsigned long highest_memmap_pfn;
  */
 #define MAX_RECLAIM_RETRIES 16
 
+/*
+ * in mm/early_ioremap.c
+ */
+pgprot_t __init early_memremap_pgprot_adjust(resource_size_t phys_addr,
+					unsigned long size, pgprot_t prot);
+
 /*
  * in mm/vmscan.c:
  */
-- 
2.35.1