there will be no entries in the cache for the kernel address
space for virtual addresses in the range 'start' to 'end-1'.
- The first of these two routines is invoked after map_vm_area()
+ The first of these two routines is invoked after map_kernel_range()
has installed the page table entries. The second is invoked
before unmap_kernel_range() deletes the page table entries.
extern struct vm_struct *remove_vm_area(const void *addr);
extern struct vm_struct *find_vm_area(const void *addr);
-extern int map_vm_area(struct vm_struct *area, pgprot_t prot,
- struct page **pages);
#ifdef CONFIG_MMU
extern int map_kernel_range_noflush(unsigned long start, unsigned long size,
pgprot_t prot, struct page **pages);
+int map_kernel_range(unsigned long start, unsigned long size, pgprot_t prot,
+ struct page **pages);
extern void unmap_kernel_range_noflush(unsigned long addr, unsigned long size);
extern void unmap_kernel_range(unsigned long addr, unsigned long size);
static inline void set_vm_flush_reset_perms(void *addr)
{
return size >> PAGE_SHIFT;
}
+#define map_kernel_range map_kernel_range_noflush
static inline void
unmap_kernel_range_noflush(unsigned long addr, unsigned long size)
{
}
-static inline void
-unmap_kernel_range(unsigned long addr, unsigned long size)
-{
-}
+#define unmap_kernel_range unmap_kernel_range_noflush
static inline void set_vm_flush_reset_perms(void *addr)
{
}
return 0;
}
-static int map_kernel_range(unsigned long start, unsigned long size,
- pgprot_t prot, struct page **pages)
+int map_kernel_range(unsigned long start, unsigned long size, pgprot_t prot,
+ struct page **pages)
{
int ret;
flush_tlb_kernel_range(addr, end);
}
-int map_vm_area(struct vm_struct *area, pgprot_t prot, struct page **pages)
-{
- unsigned long addr = (unsigned long)area->addr;
- int err;
-
- err = map_kernel_range(addr, get_vm_area_size(area), prot, pages);
-
- return err > 0 ? 0 : err;
-}
-
static inline void setup_vmalloc_vm_locked(struct vm_struct *vm,
struct vmap_area *va, unsigned long flags, const void *caller)
{
if (!area)
return NULL;
- if (map_vm_area(area, prot, pages)) {
+ if (map_kernel_range((unsigned long)area->addr, size, prot,
+ pages) < 0) {
vunmap(area->addr);
return NULL;
}
}
atomic_long_add(area->nr_pages, &nr_vmalloc_pages);
- if (map_vm_area(area, prot, pages))
+ if (map_kernel_range((unsigned long)area->addr, get_vm_area_size(area),
+ prot, pages) < 0)
goto fail;
+
return area->addr;
fail:
static inline void *__zs_map_object(struct mapping_area *area,
struct page *pages[2], int off, int size)
{
- BUG_ON(map_vm_area(area->vm, PAGE_KERNEL, pages));
+ unsigned long addr = (unsigned long)area->vm->addr;
+
+ BUG_ON(map_kernel_range(addr, PAGE_SIZE * 2, PAGE_KERNEL, pages) < 0);
area->vm_addr = area->vm->addr;
return area->vm_addr + off;
}
* kvmalloc() doesn't fall back to the vmalloc allocator unless flags are
* compatible with (a superset of) GFP_KERNEL. This is because while the
* actual pages are allocated with the specified flags, the page table pages
- * are always allocated with GFP_KERNEL. map_vm_area() doesn't even take
- * flags because GFP_KERNEL is hard-coded in {p4d,pud,pmd,pte}_alloc().
+ * are always allocated with GFP_KERNEL.
*
* ceph_kvmalloc() may be called with GFP_KERNEL, GFP_NOFS or GFP_NOIO.
*/