diff options
Diffstat (limited to 'include/linux/secretmem.h')
| -rw-r--r-- | include/linux/secretmem.h | 22 |
1 files changed, 2 insertions, 20 deletions
diff --git a/include/linux/secretmem.h b/include/linux/secretmem.h index 988528b5da43..e918f96881f5 100644 --- a/include/linux/secretmem.h +++ b/include/linux/secretmem.h @@ -6,26 +6,8 @@ extern const struct address_space_operations secretmem_aops; -static inline bool page_is_secretmem(struct page *page) +static inline bool secretmem_mapping(struct address_space *mapping) { - struct address_space *mapping; - - /* - * Using page_mapping() is quite slow because of the actual call - * instruction and repeated compound_head(page) inside the - * page_mapping() function. - * We know that secretmem pages are not compound and LRU so we can - * save a couple of cycles here. - */ - if (PageCompound(page) || !PageLRU(page)) - return false; - - mapping = (struct address_space *) - ((unsigned long)page->mapping & ~PAGE_MAPPING_FLAGS); - - if (!mapping || mapping != page->mapping) - return false; - return mapping->a_ops == &secretmem_aops; } @@ -39,7 +21,7 @@ static inline bool vma_is_secretmem(struct vm_area_struct *vma) return false; } -static inline bool page_is_secretmem(struct page *page) +static inline bool secretmem_mapping(struct address_space *mapping) { return false; } |