[01/17] Vmalloc: Move vmalloc_to_page to mm/vmalloc.
We already have page table manipulation for vmalloc in vmalloc.c. Move the
vmalloc_to_page() function there as well.
Move the definitions for vmalloc related functions in mm.h to before the
functions dealing with compound pages because they will soon need to use
them.
Signed-off-by: Christoph Lameter [EMAIL PROTECTED]
---
include/linux/mm.h |5 +++--
mm/memory.c| 40
mm/vmalloc.c | 38 ++
3 files changed, 41 insertions(+), 42 deletions(-)
Index: linux-2.6/mm/memory.c
===
--- linux-2.6.orig/mm/memory.c 2007-09-24 16:55:28.0 -0700
+++ linux-2.6/mm/memory.c 2007-09-24 16:55:32.0 -0700
@@ -2727,46 +2727,6 @@ int make_pages_present(unsigned long add
return ret == len ? 0 : -1;
}
-/*
- * Map a vmalloc()-space virtual address to the physical page.
- */
-struct page * vmalloc_to_page(void * vmalloc_addr)
-{
- unsigned long addr = (unsigned long) vmalloc_addr;
- struct page *page = NULL;
- pgd_t *pgd = pgd_offset_k(addr);
- pud_t *pud;
- pmd_t *pmd;
- pte_t *ptep, pte;
-
- if (!pgd_none(*pgd)) {
- pud = pud_offset(pgd, addr);
- if (!pud_none(*pud)) {
- pmd = pmd_offset(pud, addr);
- if (!pmd_none(*pmd)) {
- ptep = pte_offset_map(pmd, addr);
- pte = *ptep;
- if (pte_present(pte))
- page = pte_page(pte);
- pte_unmap(ptep);
- }
- }
- }
- return page;
-}
-
-EXPORT_SYMBOL(vmalloc_to_page);
-
-/*
- * Map a vmalloc()-space virtual address to the physical page frame number.
- */
-unsigned long vmalloc_to_pfn(void * vmalloc_addr)
-{
- return page_to_pfn(vmalloc_to_page(vmalloc_addr));
-}
-
-EXPORT_SYMBOL(vmalloc_to_pfn);
-
#if !defined(__HAVE_ARCH_GATE_AREA)
#if defined(AT_SYSINFO_EHDR)
Index: linux-2.6/mm/vmalloc.c
===
--- linux-2.6.orig/mm/vmalloc.c 2007-09-24 16:55:28.0 -0700
+++ linux-2.6/mm/vmalloc.c 2007-09-24 16:55:32.0 -0700
@@ -166,6 +166,44 @@ int map_vm_area(struct vm_struct *area,
}
EXPORT_SYMBOL_GPL(map_vm_area);
+/*
+ * Map a vmalloc()-space virtual address to the physical page.
+ */
+struct page *vmalloc_to_page(void *vmalloc_addr)
+{
+ unsigned long addr = (unsigned long) vmalloc_addr;
+ struct page *page = NULL;
+ pgd_t *pgd = pgd_offset_k(addr);
+ pud_t *pud;
+ pmd_t *pmd;
+ pte_t *ptep, pte;
+
+ if (!pgd_none(*pgd)) {
+ pud = pud_offset(pgd, addr);
+ if (!pud_none(*pud)) {
+ pmd = pmd_offset(pud, addr);
+ if (!pmd_none(*pmd)) {
+ ptep = pte_offset_map(pmd, addr);
+ pte = *ptep;
+ if (pte_present(pte))
+ page = pte_page(pte);
+ pte_unmap(ptep);
+ }
+ }
+ }
+ return page;
+}
+EXPORT_SYMBOL(vmalloc_to_page);
+
+/*
+ * Map a vmalloc()-space virtual address to the physical page frame number.
+ */
+unsigned long vmalloc_to_pfn(void *vmalloc_addr)
+{
+ return page_to_pfn(vmalloc_to_page(vmalloc_addr));
+}
+EXPORT_SYMBOL(vmalloc_to_pfn);
+
static struct vm_struct *__get_vm_area_node(unsigned long size, unsigned long
flags,
unsigned long start, unsigned long
end,
int node, gfp_t gfp_mask)
Index: linux-2.6/include/linux/mm.h
===
--- linux-2.6.orig/include/linux/mm.h 2007-09-24 16:55:28.0 -0700
+++ linux-2.6/include/linux/mm.h2007-09-24 16:57:23.0 -0700
@@ -294,6 +294,9 @@ static inline int get_page_unless_zero(s
return atomic_inc_not_zero(page-_count);
}
+struct page *vmalloc_to_page(void *addr);
+unsigned long vmalloc_to_pfn(void *addr);
+
static inline struct page *compound_head(struct page *page)
{
if (unlikely(PageTail(page)))
@@ -1160,8 +1163,6 @@ static inline unsigned long vma_pages(st
pgprot_t vm_get_page_prot(unsigned long vm_flags);
struct vm_area_struct *find_extend_vma(struct mm_struct *, unsigned long addr);
-struct page *vmalloc_to_page(void *addr);
-unsigned long vmalloc_to_pfn(void *addr);
int remap_pfn_range(struct vm_area_struct *, unsigned long addr,
unsigned long pfn, unsigned long size, pgprot_t);
int vm_insert_page(struct vm_area_struct *, unsigned long addr, struct page *);
--
-
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[01/17] Vmalloc: Move vmalloc_to_page to mm/vmalloc.
We already have page table manipulation for vmalloc in vmalloc.c. Move the
vmalloc_to_page() function there as well. Also move the related definitions
from include/linux/mm.h.
Signed-off-by: Christoph Lameter [EMAIL PROTECTED]
---
include/linux/mm.h |2 --
include/linux/vmalloc.h |4
mm/memory.c | 40
mm/vmalloc.c| 38 ++
4 files changed, 42 insertions(+), 42 deletions(-)
Index: linux-2.6/mm/memory.c
===
--- linux-2.6.orig/mm/memory.c 2007-09-18 18:33:56.0 -0700
+++ linux-2.6/mm/memory.c 2007-09-18 18:34:06.0 -0700
@@ -2727,46 +2727,6 @@ int make_pages_present(unsigned long add
return ret == len ? 0 : -1;
}
-/*
- * Map a vmalloc()-space virtual address to the physical page.
- */
-struct page * vmalloc_to_page(void * vmalloc_addr)
-{
- unsigned long addr = (unsigned long) vmalloc_addr;
- struct page *page = NULL;
- pgd_t *pgd = pgd_offset_k(addr);
- pud_t *pud;
- pmd_t *pmd;
- pte_t *ptep, pte;
-
- if (!pgd_none(*pgd)) {
- pud = pud_offset(pgd, addr);
- if (!pud_none(*pud)) {
- pmd = pmd_offset(pud, addr);
- if (!pmd_none(*pmd)) {
- ptep = pte_offset_map(pmd, addr);
- pte = *ptep;
- if (pte_present(pte))
- page = pte_page(pte);
- pte_unmap(ptep);
- }
- }
- }
- return page;
-}
-
-EXPORT_SYMBOL(vmalloc_to_page);
-
-/*
- * Map a vmalloc()-space virtual address to the physical page frame number.
- */
-unsigned long vmalloc_to_pfn(void * vmalloc_addr)
-{
- return page_to_pfn(vmalloc_to_page(vmalloc_addr));
-}
-
-EXPORT_SYMBOL(vmalloc_to_pfn);
-
#if !defined(__HAVE_ARCH_GATE_AREA)
#if defined(AT_SYSINFO_EHDR)
Index: linux-2.6/mm/vmalloc.c
===
--- linux-2.6.orig/mm/vmalloc.c 2007-09-18 18:33:56.0 -0700
+++ linux-2.6/mm/vmalloc.c 2007-09-18 18:34:06.0 -0700
@@ -166,6 +166,44 @@ int map_vm_area(struct vm_struct *area,
}
EXPORT_SYMBOL_GPL(map_vm_area);
+/*
+ * Map a vmalloc()-space virtual address to the physical page.
+ */
+struct page *vmalloc_to_page(void *vmalloc_addr)
+{
+ unsigned long addr = (unsigned long) vmalloc_addr;
+ struct page *page = NULL;
+ pgd_t *pgd = pgd_offset_k(addr);
+ pud_t *pud;
+ pmd_t *pmd;
+ pte_t *ptep, pte;
+
+ if (!pgd_none(*pgd)) {
+ pud = pud_offset(pgd, addr);
+ if (!pud_none(*pud)) {
+ pmd = pmd_offset(pud, addr);
+ if (!pmd_none(*pmd)) {
+ ptep = pte_offset_map(pmd, addr);
+ pte = *ptep;
+ if (pte_present(pte))
+ page = pte_page(pte);
+ pte_unmap(ptep);
+ }
+ }
+ }
+ return page;
+}
+EXPORT_SYMBOL(vmalloc_to_page);
+
+/*
+ * Map a vmalloc()-space virtual address to the physical page frame number.
+ */
+unsigned long vmalloc_to_pfn(void *vmalloc_addr)
+{
+ return page_to_pfn(vmalloc_to_page(vmalloc_addr));
+}
+EXPORT_SYMBOL(vmalloc_to_pfn);
+
static struct vm_struct *__get_vm_area_node(unsigned long size, unsigned long
flags,
unsigned long start, unsigned long
end,
int node, gfp_t gfp_mask)
Index: linux-2.6/include/linux/mm.h
===
--- linux-2.6.orig/include/linux/mm.h 2007-09-18 18:33:56.0 -0700
+++ linux-2.6/include/linux/mm.h2007-09-18 18:34:06.0 -0700
@@ -1160,8 +1160,6 @@ static inline unsigned long vma_pages(st
pgprot_t vm_get_page_prot(unsigned long vm_flags);
struct vm_area_struct *find_extend_vma(struct mm_struct *, unsigned long addr);
-struct page *vmalloc_to_page(void *addr);
-unsigned long vmalloc_to_pfn(void *addr);
int remap_pfn_range(struct vm_area_struct *, unsigned long addr,
unsigned long pfn, unsigned long size, pgprot_t);
int vm_insert_page(struct vm_area_struct *, unsigned long addr, struct page *);
Index: linux-2.6/include/linux/vmalloc.h
===
--- linux-2.6.orig/include/linux/vmalloc.h 2007-09-18 18:33:57.0
-0700
+++ linux-2.6/include/linux/vmalloc.h 2007-09-18 18:34:24.0 -0700
@@ -81,6 +81,10 @@ extern void unmap_kernel_range(unsigned
extern struct vm_struct *alloc_vm_area(size_t size);
extern void
