vmalloc: add const to void* parameters
Make vmalloc functions work the same way as kfree() and friends that
take a const void * argument.
[akpm@linux-foundation.org: fix consts, coding-style]
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 1961056..a862a96 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -232,8 +232,8 @@
}
/* Support for virtually mapped pages */
-struct page *vmalloc_to_page(void *addr);
-unsigned long vmalloc_to_pfn(void *addr);
+struct page *vmalloc_to_page(const void *addr);
+unsigned long vmalloc_to_pfn(const void *addr);
static inline struct page *compound_head(struct page *page)
{
diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index 89338b4..ce8e7da 100644
--- a/include/linux/vmalloc.h
+++ b/include/linux/vmalloc.h
@@ -45,11 +45,11 @@
extern void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot);
extern void *__vmalloc_area(struct vm_struct *area, gfp_t gfp_mask,
pgprot_t prot);
-extern void vfree(void *addr);
+extern void vfree(const void *addr);
extern void *vmap(struct page **pages, unsigned int count,
unsigned long flags, pgprot_t prot);
-extern void vunmap(void *addr);
+extern void vunmap(const void *addr);
extern int remap_vmalloc_range(struct vm_area_struct *vma, void *addr,
unsigned long pgoff);
@@ -71,7 +71,7 @@
extern struct vm_struct *get_vm_area_node(unsigned long size,
unsigned long flags, int node,
gfp_t gfp_mask);
-extern struct vm_struct *remove_vm_area(void *addr);
+extern struct vm_struct *remove_vm_area(const void *addr);
extern int map_vm_area(struct vm_struct *area, pgprot_t prot,
struct page ***pages);
diff --git a/mm/nommu.c b/mm/nommu.c
index b989cb9..f3bfd01 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -167,7 +167,7 @@
DEFINE_RWLOCK(vmlist_lock);
struct vm_struct *vmlist;
-void vfree(void *addr)
+void vfree(const void *addr)
{
kfree(addr);
}
@@ -183,13 +183,13 @@
}
EXPORT_SYMBOL(__vmalloc);
-struct page * vmalloc_to_page(void *addr)
+struct page *vmalloc_to_page(const void *addr)
{
return virt_to_page(addr);
}
EXPORT_SYMBOL(vmalloc_to_page);
-unsigned long vmalloc_to_pfn(void *addr)
+unsigned long vmalloc_to_pfn(const void *addr)
{
return page_to_pfn(virt_to_page(addr));
}
@@ -267,7 +267,7 @@
}
EXPORT_SYMBOL(vmap);
-void vunmap(void *addr)
+void vunmap(const void *addr)
{
BUG();
}
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index e4c59a3..21abac2 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -169,7 +169,7 @@
/*
* Map a vmalloc()-space virtual address to the physical page.
*/
-struct page *vmalloc_to_page(void *vmalloc_addr)
+struct page *vmalloc_to_page(const void *vmalloc_addr)
{
unsigned long addr = (unsigned long) vmalloc_addr;
struct page *page = NULL;
@@ -198,7 +198,7 @@
/*
* Map a vmalloc()-space virtual address to the physical page frame number.
*/
-unsigned long vmalloc_to_pfn(void *vmalloc_addr)
+unsigned long vmalloc_to_pfn(const void *vmalloc_addr)
{
return page_to_pfn(vmalloc_to_page(vmalloc_addr));
}
@@ -306,7 +306,7 @@
}
/* Caller must hold vmlist_lock */
-static struct vm_struct *__find_vm_area(void *addr)
+static struct vm_struct *__find_vm_area(const void *addr)
{
struct vm_struct *tmp;
@@ -319,7 +319,7 @@
}
/* Caller must hold vmlist_lock */
-static struct vm_struct *__remove_vm_area(void *addr)
+static struct vm_struct *__remove_vm_area(const void *addr)
{
struct vm_struct **p, *tmp;
@@ -348,7 +348,7 @@
* This function returns the found VM area, but using it is NOT safe
* on SMP machines, except for its size or flags.
*/
-struct vm_struct *remove_vm_area(void *addr)
+struct vm_struct *remove_vm_area(const void *addr)
{
struct vm_struct *v;
write_lock(&vmlist_lock);
@@ -357,7 +357,7 @@
return v;
}
-static void __vunmap(void *addr, int deallocate_pages)
+static void __vunmap(const void *addr, int deallocate_pages)
{
struct vm_struct *area;
@@ -408,7 +408,7 @@
*
* Must not be called in interrupt context.
*/
-void vfree(void *addr)
+void vfree(const void *addr)
{
BUG_ON(in_interrupt());
__vunmap(addr, 1);
@@ -424,7 +424,7 @@
*
* Must not be called in interrupt context.
*/
-void vunmap(void *addr)
+void vunmap(const void *addr)
{
BUG_ON(in_interrupt());
__vunmap(addr, 0);