diff options
Diffstat (limited to 'include/linux/mm.h')
| -rw-r--r-- | include/linux/mm.h | 50 |
1 files changed, 27 insertions, 23 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 21115933b9b8..011f43605807 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -432,8 +432,7 @@ extern unsigned int kobjsize(const void *objp); extern pgprot_t protection_map[16]; /** - * Fault flag definitions. - * + * enum fault_flag - Fault flag definitions. * @FAULT_FLAG_WRITE: Fault was a write fault. * @FAULT_FLAG_MKWRITE: Fault was mkwrite of existing PTE. * @FAULT_FLAG_ALLOW_RETRY: Allow to retry the fault if blocked. @@ -464,16 +463,18 @@ extern pgprot_t protection_map[16]; * signals before a retry to make sure the continuous page faults can still be * interrupted if necessary. */ -#define FAULT_FLAG_WRITE 0x01 -#define FAULT_FLAG_MKWRITE 0x02 -#define FAULT_FLAG_ALLOW_RETRY 0x04 -#define FAULT_FLAG_RETRY_NOWAIT 0x08 -#define FAULT_FLAG_KILLABLE 0x10 -#define FAULT_FLAG_TRIED 0x20 -#define FAULT_FLAG_USER 0x40 -#define FAULT_FLAG_REMOTE 0x80 -#define FAULT_FLAG_INSTRUCTION 0x100 -#define FAULT_FLAG_INTERRUPTIBLE 0x200 +enum fault_flag { + FAULT_FLAG_WRITE = 1 << 0, + FAULT_FLAG_MKWRITE = 1 << 1, + FAULT_FLAG_ALLOW_RETRY = 1 << 2, + FAULT_FLAG_RETRY_NOWAIT = 1 << 3, + FAULT_FLAG_KILLABLE = 1 << 4, + FAULT_FLAG_TRIED = 1 << 5, + FAULT_FLAG_USER = 1 << 6, + FAULT_FLAG_REMOTE = 1 << 7, + FAULT_FLAG_INSTRUCTION = 1 << 8, + FAULT_FLAG_INTERRUPTIBLE = 1 << 9, +}; /* * The default fault flags that should be used by most of the @@ -485,6 +486,7 @@ extern pgprot_t protection_map[16]; /** * fault_flag_allow_retry_first - check ALLOW_RETRY the first time + * @flags: Fault flags. * * This is mostly used for places where we want to try to avoid taking * the mmap_lock for too long a time when waiting for another condition @@ -495,7 +497,7 @@ extern pgprot_t protection_map[16]; * Return: true if the page fault allows retry and this is the first * attempt of the fault handling; false otherwise. */ -static inline bool fault_flag_allow_retry_first(unsigned int flags) +static inline bool fault_flag_allow_retry_first(enum fault_flag flags) { return (flags & FAULT_FLAG_ALLOW_RETRY) && (!(flags & FAULT_FLAG_TRIED)); @@ -530,7 +532,7 @@ struct vm_fault { pgoff_t pgoff; /* Logical page offset based on vma */ unsigned long address; /* Faulting virtual address */ }; - unsigned int flags; /* FAULT_FLAG_xxx flags + enum fault_flag flags; /* FAULT_FLAG_xxx flags * XXX: should really be 'const' */ pmd_t *pmd; /* Pointer to pmd entry matching * the 'address' */ @@ -580,7 +582,7 @@ struct vm_operations_struct { void (*close)(struct vm_area_struct * area); /* Called any time before splitting to check if it's allowed */ int (*may_split)(struct vm_area_struct *area, unsigned long addr); - int (*mremap)(struct vm_area_struct *area, unsigned long flags); + int (*mremap)(struct vm_area_struct *area); /* * Called by mprotect() to make driver-specific permission * checks before mprotect() is finalised. The VMA must not @@ -1265,13 +1267,16 @@ static inline void put_page(struct page *page) void unpin_user_page(struct page *page); void unpin_user_pages_dirty_lock(struct page **pages, unsigned long npages, bool make_dirty); +void unpin_user_page_range_dirty_lock(struct page *page, unsigned long npages, + bool make_dirty); void unpin_user_pages(struct page **pages, unsigned long npages); /** - * page_maybe_dma_pinned() - report if a page is pinned for DMA. + * page_maybe_dma_pinned - Report if a page is pinned for DMA. + * @page: The page. * * This function checks if a page has been pinned via a call to - * pin_user_pages*(). + * a function in the pin_user_pages() family. * * For non-huge pages, the return value is partially fuzzy: false is not fuzzy, * because it means "definitely not pinned for DMA", but true means "probably @@ -1289,9 +1294,8 @@ void unpin_user_pages(struct page **pages, unsigned long npages); * * For more information, please see Documentation/core-api/pin_user_pages.rst. * - * @page: pointer to page to be queried. - * @Return: True, if it is likely that the page has been "dma-pinned". - * False, if the page is definitely not dma-pinned. + * Return: True, if it is likely that the page has been "dma-pinned". + * False, if the page is definitely not dma-pinned. */ static inline bool page_maybe_dma_pinned(struct page *page) { @@ -1629,7 +1633,6 @@ static inline pgoff_t page_index(struct page *page) bool page_mapped(struct page *page); struct address_space *page_mapping(struct page *page); -struct address_space *page_mapping_file(struct page *page); /* * Return true only if the page has been allocated with @@ -2357,7 +2360,7 @@ extern unsigned long free_reserved_area(void *start, void *end, int poison, const char *s); extern void adjust_managed_page_count(struct page *page, long count); -extern void mem_init_print_info(const char *str); +extern void mem_init_print_info(void); extern void reserve_bootmem_region(phys_addr_t start, phys_addr_t end); @@ -2731,6 +2734,8 @@ unsigned long change_prot_numa(struct vm_area_struct *vma, struct vm_area_struct *find_extend_vma(struct mm_struct *, unsigned long addr); int remap_pfn_range(struct vm_area_struct *, unsigned long addr, unsigned long pfn, unsigned long size, pgprot_t); +int remap_pfn_range_notrack(struct vm_area_struct *vma, unsigned long addr, + unsigned long pfn, unsigned long size, pgprot_t prot); int vm_insert_page(struct vm_area_struct *, unsigned long addr, struct page *); int vm_insert_pages(struct vm_area_struct *vma, unsigned long addr, struct page **pages, unsigned long *num); @@ -2790,7 +2795,6 @@ struct page *follow_page(struct vm_area_struct *vma, unsigned long address, #define FOLL_NOWAIT 0x20 /* if a disk transfer is needed, start the IO * and return without waiting upon it */ #define FOLL_POPULATE 0x40 /* fault in page */ -#define FOLL_SPLIT 0x80 /* don't return transhuge pages, split them */ #define FOLL_HWPOISON 0x100 /* check page is hwpoisoned */ #define FOLL_NUMA 0x200 /* force NUMA hinting page fault */ #define FOLL_MIGRATION 0x400 /* wait for page to replace migration entry */ |