This patch exports memory management functions that are useful to memory
managers, so that they can be used in memory management filesystems created
in kernel modules.
Signed-off-by: Bijan Tabatabai <btabatabai@xxxxxxxx>
---
arch/x86/include/asm/tlbflush.h | 2 --
arch/x86/mm/tlb.c | 1 +
mm/filemap.c | 2 ++
mm/memory.c | 1 +
mm/mmap.c | 2 ++
mm/pgtable-generic.c | 1 +
mm/rmap.c | 2 ++
7 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/arch/x86/include/asm/tlbflush.h b/arch/x86/include/asm/tlbflush.h
index 25726893c6f4..9877176d396f 100644
--- a/arch/x86/include/asm/tlbflush.h
+++ b/arch/x86/include/asm/tlbflush.h
@@ -57,7 +57,6 @@ static inline void cr4_clear_bits(unsigned long mask)
local_irq_restore(flags);
}
-#ifndef MODULE
/*
* 6 because 6 should be plenty and struct tlb_state will fit in two cache
* lines.
@@ -417,7 +416,6 @@ static inline void set_tlbstate_lam_mode(struct mm_struct *mm)
{
}
#endif
-#endif /* !MODULE */
static inline void __native_tlb_flush_global(unsigned long cr4)
{
diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index 44ac64f3a047..f054cee7bc7c 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -1036,6 +1036,7 @@ void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start,
put_cpu();
mmu_notifier_arch_invalidate_secondary_tlbs(mm, start, end);
}
+EXPORT_SYMBOL_GPL(flush_tlb_mm_range);
static void do_flush_tlb_all(void *info)
diff --git a/mm/filemap.c b/mm/filemap.c
index 657bcd887fdb..8532ddd37e7f 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -269,6 +269,7 @@ void filemap_remove_folio(struct folio *folio)
filemap_free_folio(mapping, folio);
}
+EXPORT_SYMBOL_GPL(filemap_remove_folio);
/*
* page_cache_delete_batch - delete several folios from page cache
@@ -955,6 +956,7 @@ noinline int __filemap_add_folio(struct address_space *mapping,
return xas_error(&xas);
}
ALLOW_ERROR_INJECTION(__filemap_add_folio, ERRNO);
+EXPORT_SYMBOL_GPL(__filemap_add_folio);
int filemap_add_folio(struct address_space *mapping, struct folio *folio,
pgoff_t index, gfp_t gfp)
diff --git a/mm/memory.c b/mm/memory.c
index fa2fe3ee0867..23e74a0397fa 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -448,6 +448,7 @@ int __pte_alloc(struct mm_struct *mm, pmd_t *pmd)
pte_free(mm, new);
return 0;
}
+EXPORT_SYMBOL_GPL(__pte_alloc);
int __pte_alloc_kernel(pmd_t *pmd)
{
diff --git a/mm/mmap.c b/mm/mmap.c
index d684d8bd218b..1090ef982929 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1780,6 +1780,7 @@ generic_get_unmapped_area(struct file *filp, unsigned long addr,
info.high_limit = mmap_end;
return vm_unmapped_area(&info);
}
+EXPORT_SYMBOL_GPL(generic_get_unmapped_area);
#ifndef HAVE_ARCH_UNMAPPED_AREA
unsigned long
@@ -1844,6 +1845,7 @@ generic_get_unmapped_area_topdown(struct file *filp, unsigned long addr,
return addr;
}
+EXPORT_SYMBOL_GPL(generic_get_unmapped_area_topdown);
#ifndef HAVE_ARCH_UNMAPPED_AREA_TOPDOWN
unsigned long
diff --git a/mm/pgtable-generic.c b/mm/pgtable-generic.c
index a78a4adf711a..1a3b4a86b005 100644
--- a/mm/pgtable-generic.c
+++ b/mm/pgtable-generic.c
@@ -304,6 +304,7 @@ pte_t *__pte_offset_map(pmd_t *pmd, unsigned long addr, pmd_t *pmdvalp)
rcu_read_unlock();
return NULL;
}
+EXPORT_SYMBOL_GPL(__pte_offset_map);
pte_t *pte_offset_map_nolock(struct mm_struct *mm, pmd_t *pmd,
unsigned long addr, spinlock_t **ptlp)
diff --git a/mm/rmap.c b/mm/rmap.c
index e8fc5ecb59b2..fdade910cc95 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -1468,6 +1468,7 @@ void folio_add_file_rmap_ptes(struct folio *folio, struct page *page,
{
__folio_add_file_rmap(folio, page, nr_pages, vma, RMAP_LEVEL_PTE);
}
+EXPORT_SYMBOL_GPL(folio_add_file_rmap_ptes);
/**
* folio_add_file_rmap_pmd - add a PMD mapping to a page range of a folio
@@ -1594,6 +1595,7 @@ void folio_remove_rmap_ptes(struct folio *folio, struct page *page,
{
__folio_remove_rmap(folio, page, nr_pages, vma, RMAP_LEVEL_PTE);
}
+EXPORT_SYMBOL_GPL(folio_remove_rmap_ptes);
/**
* folio_remove_rmap_pmd - remove a PMD mapping from a page range of a folio
--
2.34.1
