diff options
Diffstat (limited to 'include/linux/highmem-internal.h')
| -rw-r--r-- | include/linux/highmem-internal.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/highmem-internal.h b/include/linux/highmem-internal.h index dd100e849f5e..9a7683d79a4b 100644 --- a/include/linux/highmem-internal.h +++ b/include/linux/highmem-internal.h @@ -73,6 +73,14 @@ static inline void *kmap_local_page(struct page *page) return __kmap_local_page_prot(page, kmap_prot); } +static inline void *kmap_local_page_try_from_panic(struct page *page) +{ + if (!PageHighMem(page)) + return page_address(page); + /* If the page is in HighMem, it's not safe to kmap it.*/ + return NULL; +} + static inline void *kmap_local_folio(struct folio *folio, size_t offset) { struct page *page = folio_page(folio, offset / PAGE_SIZE); @@ -180,6 +188,11 @@ static inline void *kmap_local_page(struct page *page) return page_address(page); } +static inline void *kmap_local_page_try_from_panic(struct page *page) +{ + return page_address(page); +} + static inline void *kmap_local_folio(struct folio *folio, size_t offset) { return page_address(&folio->page) + offset; |