diff options
Diffstat (limited to 'mm/vmalloc.c')
-rw-r--r-- | mm/vmalloc.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 712ae47af0bf..0797589d51f8 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c | |||
@@ -175,6 +175,21 @@ static int vmap_page_range(unsigned long addr, unsigned long end, | |||
175 | return nr; | 175 | return nr; |
176 | } | 176 | } |
177 | 177 | ||
178 | static inline int is_vmalloc_or_module_addr(const void *x) | ||
179 | { | ||
180 | /* | ||
181 | * x86-64 and sparc64 put modules in a special place, | ||
182 | * and fall back on vmalloc() if that fails. Others | ||
183 | * just put it in the vmalloc space. | ||
184 | */ | ||
185 | #if defined(CONFIG_MODULES) && defined(MODULES_VADDR) | ||
186 | unsigned long addr = (unsigned long)x; | ||
187 | if (addr >= MODULES_VADDR && addr < MODULES_END) | ||
188 | return 1; | ||
189 | #endif | ||
190 | return is_vmalloc_addr(x); | ||
191 | } | ||
192 | |||
178 | /* | 193 | /* |
179 | * Walk a vmap address to the struct page it maps. | 194 | * Walk a vmap address to the struct page it maps. |
180 | */ | 195 | */ |
@@ -188,8 +203,7 @@ struct page *vmalloc_to_page(const void *vmalloc_addr) | |||
188 | * XXX we might need to change this if we add VIRTUAL_BUG_ON for | 203 | * XXX we might need to change this if we add VIRTUAL_BUG_ON for |
189 | * architectures that do not vmalloc module space | 204 | * architectures that do not vmalloc module space |
190 | */ | 205 | */ |
191 | VIRTUAL_BUG_ON(!is_vmalloc_addr(vmalloc_addr) && | 206 | VIRTUAL_BUG_ON(!is_vmalloc_or_module_addr(vmalloc_addr)); |
192 | !is_module_address(addr)); | ||
193 | 207 | ||
194 | if (!pgd_none(*pgd)) { | 208 | if (!pgd_none(*pgd)) { |
195 | pud_t *pud = pud_offset(pgd, addr); | 209 | pud_t *pud = pud_offset(pgd, addr); |