From f58c9df78c0360f0eb3852b9cc3a61e689bc2dd1 Mon Sep 17 00:00:00 2001
From: Huang Ying <ying.huang@intel.com>
Date: Sun, 30 Jan 2011 11:15:49 +0800
Subject: [PATCH] mm: remove is_hwpoison_address
Unused.
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
---
include/linux/mm.h | 8 --------
mm/memory-failure.c | 32 --------------------------------
2 files changed, 40 deletions(-)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index a77c82c56e05..78219887308e 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1625,14 +1625,6 @@ extern int sysctl_memory_failure_recovery;
extern void shake_page(struct page *p, int access);
extern atomic_long_t mce_bad_pages;
extern int soft_offline_page(struct page *page, int flags);
-#ifdef CONFIG_MEMORY_FAILURE
-int is_hwpoison_address(unsigned long addr);
-#else
-static inline int is_hwpoison_address(unsigned long addr)
-{
- return 0;
-}
-#endif
extern void dump_page(struct page *page);
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 0207c2f6f8bd..99ccb4472623 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1487,35 +1487,3 @@ done:
/* keep elevated page count for bad page */
return ret;
}
-
-/*
- * The caller must hold current->mm->mmap_sem in read mode.
- */
-int is_hwpoison_address(unsigned long addr)
-{
- pgd_t *pgdp;
- pud_t pud, *pudp;
- pmd_t pmd, *pmdp;
- pte_t pte, *ptep;
- swp_entry_t entry;
-
- pgdp = pgd_offset(current->mm, addr);
- if (!pgd_present(*pgdp))
- return 0;
- pudp = pud_offset(pgdp, addr);
- pud = *pudp;
- if (!pud_present(pud) || pud_large(pud))
- return 0;
- pmdp = pmd_offset(pudp, addr);
- pmd = *pmdp;
- if (!pmd_present(pmd) || pmd_large(pmd))
- return 0;
- ptep = pte_offset_map(pmdp, addr);
- pte = *ptep;
- pte_unmap(ptep);
- if (!is_swap_pte(pte))
- return 0;
- entry = pte_to_swp_entry(pte);
- return is_hwpoison_entry(entry);
-}
-EXPORT_SYMBOL_GPL(is_hwpoison_address);
--
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