diff options
Diffstat (limited to 'mm/vmalloc.c')
| -rw-r--r-- | mm/vmalloc.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 712ae47af0bf..65ae576030da 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c | |||
| @@ -17,7 +17,6 @@ | |||
| 17 | #include <linux/interrupt.h> | 17 | #include <linux/interrupt.h> |
| 18 | #include <linux/seq_file.h> | 18 | #include <linux/seq_file.h> |
| 19 | #include <linux/debugobjects.h> | 19 | #include <linux/debugobjects.h> |
| 20 | #include <linux/vmalloc.h> | ||
| 21 | #include <linux/kallsyms.h> | 20 | #include <linux/kallsyms.h> |
| 22 | #include <linux/list.h> | 21 | #include <linux/list.h> |
| 23 | #include <linux/rbtree.h> | 22 | #include <linux/rbtree.h> |
| @@ -175,6 +174,21 @@ static int vmap_page_range(unsigned long addr, unsigned long end, | |||
| 175 | return nr; | 174 | return nr; |
| 176 | } | 175 | } |
| 177 | 176 | ||
| 177 | static inline int is_vmalloc_or_module_addr(const void *x) | ||
| 178 | { | ||
| 179 | /* | ||
| 180 | * x86-64 and sparc64 put modules in a special place, | ||
| 181 | * and fall back on vmalloc() if that fails. Others | ||
| 182 | * just put it in the vmalloc space. | ||
| 183 | */ | ||
| 184 | #if defined(CONFIG_MODULES) && defined(MODULES_VADDR) | ||
| 185 | unsigned long addr = (unsigned long)x; | ||
| 186 | if (addr >= MODULES_VADDR && addr < MODULES_END) | ||
| 187 | return 1; | ||
| 188 | #endif | ||
| 189 | return is_vmalloc_addr(x); | ||
| 190 | } | ||
| 191 | |||
| 178 | /* | 192 | /* |
| 179 | * Walk a vmap address to the struct page it maps. | 193 | * Walk a vmap address to the struct page it maps. |
| 180 | */ | 194 | */ |
| @@ -188,8 +202,7 @@ struct page *vmalloc_to_page(const void *vmalloc_addr) | |||
| 188 | * XXX we might need to change this if we add VIRTUAL_BUG_ON for | 202 | * XXX we might need to change this if we add VIRTUAL_BUG_ON for |
| 189 | * architectures that do not vmalloc module space | 203 | * architectures that do not vmalloc module space |
| 190 | */ | 204 | */ |
| 191 | VIRTUAL_BUG_ON(!is_vmalloc_addr(vmalloc_addr) && | 205 | VIRTUAL_BUG_ON(!is_vmalloc_or_module_addr(vmalloc_addr)); |
| 192 | !is_module_address(addr)); | ||
| 193 | 206 | ||
| 194 | if (!pgd_none(*pgd)) { | 207 | if (!pgd_none(*pgd)) { |
| 195 | pud_t *pud = pud_offset(pgd, addr); | 208 | pud_t *pud = pud_offset(pgd, addr); |
