[PATCH v3 10/13] mm/memory-failure: move some function declarations into internal.h

[Miaohe Lin <linmiaohe@huawei.com>]

There are some functions only used inside mm. Move them into internal.h.
No functional change intended.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202405251049.hxjwX7zO-lkp@intel.com/
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
---
 include/linux/mm.h         |  7 -------
 include/linux/page-flags.h |  5 -----
 include/linux/rmap.h       |  2 --
 mm/internal.h              | 10 ++++++++++
 4 files changed, 10 insertions(+), 14 deletions(-)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 0bf0f22b32c8..587d34879865 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -3981,7 +3981,6 @@ extern int __get_huge_page_for_hwpoison(unsigned long pfn, int flags,
 					bool *migratable_cleared);
 void num_poisoned_pages_inc(unsigned long pfn);
 void num_poisoned_pages_sub(unsigned long pfn, long i);
-struct task_struct *task_early_kill(struct task_struct *tsk, int force_early);
 #else
 static inline void memory_failure_queue(unsigned long pfn, int flags)
 {
@@ -4002,12 +4001,6 @@ static inline void num_poisoned_pages_sub(unsigned long pfn, long i)
 }
 #endif
 
-#if defined(CONFIG_MEMORY_FAILURE) && defined(CONFIG_KSM)
-void add_to_kill_ksm(struct task_struct *tsk, struct page *p,
-		     struct vm_area_struct *vma, struct list_head *to_kill,
-		     unsigned long ksm_addr);
-#endif
-
 #if defined(CONFIG_MEMORY_FAILURE) && defined(CONFIG_MEMORY_HOTPLUG)
 extern void memblk_nr_poison_inc(unsigned long pfn);
 extern void memblk_nr_poison_sub(unsigned long pfn, long i);
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 0c9fd5250687..9a98b657ba07 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -611,11 +611,6 @@ PAGEFLAG_FALSE(Uncached, uncached)
 PAGEFLAG(HWPoison, hwpoison, PF_ANY)
 TESTSCFLAG(HWPoison, hwpoison, PF_ANY)
 #define __PG_HWPOISON (1UL << PG_hwpoison)
-#define MAGIC_HWPOISON	0x48575053U	/* HWPS */
-extern void SetPageHWPoisonTakenOff(struct page *page);
-extern void ClearPageHWPoisonTakenOff(struct page *page);
-extern bool take_page_off_buddy(struct page *page);
-extern bool put_page_back_buddy(struct page *page);
 #else
 PAGEFLAG_FALSE(HWPoison, hwpoison)
 #define __PG_HWPOISON 0
diff --git a/include/linux/rmap.h b/include/linux/rmap.h
index cae38a2a643d..b1bbe237ea4c 100644
--- a/include/linux/rmap.h
+++ b/include/linux/rmap.h
@@ -745,8 +745,6 @@ int pfn_mkclean_range(unsigned long pfn, unsigned long nr_pages, pgoff_t pgoff,
 
 void remove_migration_ptes(struct folio *src, struct folio *dst, bool locked);
 
-unsigned long page_mapped_in_vma(struct page *page, struct vm_area_struct *vma);
-
 /*
  * rmap_walk_control: To control rmap traversing for specific needs
  *
diff --git a/mm/internal.h b/mm/internal.h
index 14bab8a41baf..c9dc056a47a3 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -1078,6 +1078,16 @@ extern u64 hwpoison_filter_flags_mask;
 extern u64 hwpoison_filter_flags_value;
 extern u64 hwpoison_filter_memcg;
 extern u32 hwpoison_filter_enable;
+#define MAGIC_HWPOISON	0x48575053U	/* HWPS */
+void SetPageHWPoisonTakenOff(struct page *page);
+void ClearPageHWPoisonTakenOff(struct page *page);
+bool take_page_off_buddy(struct page *page);
+bool put_page_back_buddy(struct page *page);
+struct task_struct *task_early_kill(struct task_struct *tsk, int force_early);
+void add_to_kill_ksm(struct task_struct *tsk, struct page *p,
+		     struct vm_area_struct *vma, struct list_head *to_kill,
+		     unsigned long ksm_addr);
+unsigned long page_mapped_in_vma(struct page *page, struct vm_area_struct *vma);
 
 extern unsigned long  __must_check vm_mmap_pgoff(struct file *, unsigned long,
         unsigned long, unsigned long,
-- 
2.33.0