The following build error was reported by the 0-day build checker.
>> arch/arm/mm/context.c:51:18: error: 'tlb_flush_pending' redeclared as
>> different kind of symbol
include/linux/mm_types.h:477:91: note: previous definition of
'tlb_flush_pending' was here
This patch renames tlb_flush_pending to
mm_tlb_flush_pending. This is a fix for the -mm patch
mm-fix-tlb-flush-race-between-migration-and-change_protection_range.patch
Note that when slotted into place that it will cause a conflict with
mm-numa-defer-tlb-flush-for-thp-migration-as-long-as-possible.patch . The
resolution is to delete the call from huge_memory.c and make sure the
tlb_flush_pending call in mm/migrate.c is renamed appropriately.
Signed-off-by: Mel Gorman <mgor...@suse.de>
---
arch/x86/include/asm/pgtable.h | 2 +-
include/linux/mm_types.h | 4 ++--
mm/huge_memory.c | 2 +-
3 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index 48cab4c..bbc8b12 100644
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -458,7 +458,7 @@ static inline bool pte_accessible(struct mm_struct *mm,
pte_t a)
return true;
if ((pte_flags(a) & (_PAGE_PROTNONE | _PAGE_NUMA)) &&
- tlb_flush_pending(mm))
+ mm_tlb_flush_pending(mm))
return true;
return false;
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index c122bb1..e5c49c3 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -474,7 +474,7 @@ static inline cpumask_t *mm_cpumask(struct mm_struct *mm)
* The barriers below prevent the compiler from re-ordering the instructions
* around the memory barriers that are already present in the code.
*/
-static inline bool tlb_flush_pending(struct mm_struct *mm)
+static inline bool mm_tlb_flush_pending(struct mm_struct *mm)
{
barrier();
return mm->tlb_flush_pending;
@@ -491,7 +491,7 @@ static inline void clear_tlb_flush_pending(struct mm_struct
*mm)
mm->tlb_flush_pending = false;
}
#else
-static inline bool tlb_flush_pending(struct mm_struct *mm)
+static inline bool mm_tlb_flush_pending(struct mm_struct *mm)
{
return false;
}
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index e3a5ee2..317a8ff 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -1380,7 +1380,7 @@ int do_huge_pmd_numa_page(struct mm_struct *mm, struct
vm_area_struct *vma,
* The page_table_lock above provides a memory barrier
* with change_protection_range.
*/
- if (tlb_flush_pending(mm))
+ if (mm_tlb_flush_pending(mm))
flush_tlb_range(vma, haddr, haddr + HPAGE_PMD_SIZE);
/*
--
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