#define VM_NOHUGEPAGE 0x40000000 /* MADV_NOHUGEPAGE marked this vma */
#define VM_MERGEABLE 0x80000000 /* KSM may merge identical pages */
+#ifdef CONFIG_ARCH_USES_HIGH_VMA_FLAGS
+#define VM_HIGH_ARCH_BIT_0 32 /* bit only usable on 64-bit architectures */
+#define VM_HIGH_ARCH_BIT_1 33 /* bit only usable on 64-bit architectures */
+#define VM_HIGH_ARCH_BIT_2 34 /* bit only usable on 64-bit architectures */
+#define VM_HIGH_ARCH_BIT_3 35 /* bit only usable on 64-bit architectures */
+#define VM_HIGH_ARCH_0 BIT(VM_HIGH_ARCH_BIT_0)
+#define VM_HIGH_ARCH_1 BIT(VM_HIGH_ARCH_BIT_1)
+#define VM_HIGH_ARCH_2 BIT(VM_HIGH_ARCH_BIT_2)
+#define VM_HIGH_ARCH_3 BIT(VM_HIGH_ARCH_BIT_3)
+#endif /* CONFIG_ARCH_USES_HIGH_VMA_FLAGS */
+
#if defined(CONFIG_X86)
# define VM_PAT VM_ARCH_1 /* PAT reserves whole VMA at once (x86) */
#elif defined(CONFIG_PPC)
unsigned long start, unsigned long nr_pages,
unsigned int foll_flags, struct page **pages,
struct vm_area_struct **vmas, int *nonblocking);
-long get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
- unsigned long start, unsigned long nr_pages,
- int write, int force, struct page **pages,
- struct vm_area_struct **vmas);
-long get_user_pages_locked(struct task_struct *tsk, struct mm_struct *mm,
- unsigned long start, unsigned long nr_pages,
- int write, int force, struct page **pages,
- int *locked);
+long get_user_pages_remote(struct task_struct *tsk, struct mm_struct *mm,
+ unsigned long start, unsigned long nr_pages,
+ int write, int force, struct page **pages,
+ struct vm_area_struct **vmas);
+long get_user_pages6(unsigned long start, unsigned long nr_pages,
+ int write, int force, struct page **pages,
+ struct vm_area_struct **vmas);
+long get_user_pages_locked6(unsigned long start, unsigned long nr_pages,
+ int write, int force, struct page **pages, int *locked);
long __get_user_pages_unlocked(struct task_struct *tsk, struct mm_struct *mm,
unsigned long start, unsigned long nr_pages,
int write, int force, struct page **pages,
unsigned int gup_flags);
-long get_user_pages_unlocked(struct task_struct *tsk, struct mm_struct *mm,
- unsigned long start, unsigned long nr_pages,
+long get_user_pages_unlocked5(unsigned long start, unsigned long nr_pages,
int write, int force, struct page **pages);
int get_user_pages_fast(unsigned long start, int nr_pages, int write,
struct page **pages);
+/* suppress warnings from use in EXPORT_SYMBOL() */
+#ifndef __DISABLE_GUP_DEPRECATED
+#define __gup_deprecated __deprecated
+#else
+#define __gup_deprecated
+#endif
+/*
+ * These macros provide backward-compatibility with the old
+ * get_user_pages() variants which took tsk/mm. These
+ * functions/macros provide both compile-time __deprecated so we
+ * can catch old-style use and not break the build. The actual
+ * functions also have WARN_ON()s to let us know at runtime if
+ * the get_user_pages() should have been the "remote" variant.
+ *
+ * These are hideous, but temporary.
+ *
+ * If you run into one of these __deprecated warnings, look
+ * at how you are calling get_user_pages(). If you are calling
+ * it with current/current->mm as the first two arguments,
+ * simply remove those arguments. The behavior will be the same
+ * as it is now. If you are calling it on another task, use
+ * get_user_pages_remote() instead.
+ *
+ * Any questions? Ask Dave Hansen <dave@sr71.net>
+ */
+long
+__gup_deprecated
+get_user_pages8(struct task_struct *tsk, struct mm_struct *mm,
+ unsigned long start, unsigned long nr_pages,
+ int write, int force, struct page **pages,
+ struct vm_area_struct **vmas);
+#define GUP_MACRO(_1, _2, _3, _4, _5, _6, _7, _8, get_user_pages, ...) \
+ get_user_pages
+#define get_user_pages(...) GUP_MACRO(__VA_ARGS__, \
+ get_user_pages8, x, \
+ get_user_pages6, x, x, x, x, x)(__VA_ARGS__)
+
+__gup_deprecated
+long get_user_pages_locked8(struct task_struct *tsk, struct mm_struct *mm,
+ unsigned long start, unsigned long nr_pages,
+ int write, int force, struct page **pages,
+ int *locked);
+#define GUPL_MACRO(_1, _2, _3, _4, _5, _6, _7, _8, get_user_pages_locked, ...) \
+ get_user_pages_locked
+#define get_user_pages_locked(...) GUPL_MACRO(__VA_ARGS__, \
+ get_user_pages_locked8, x, \
+ get_user_pages_locked6, x, x, x, x)(__VA_ARGS__)
+
+__gup_deprecated
+long get_user_pages_unlocked7(struct task_struct *tsk, struct mm_struct *mm,
+ unsigned long start, unsigned long nr_pages,
+ int write, int force, struct page **pages);
+#define GUPU_MACRO(_1, _2, _3, _4, _5, _6, _7, get_user_pages_unlocked, ...) \
+ get_user_pages_unlocked
+#define get_user_pages_unlocked(...) GUPU_MACRO(__VA_ARGS__, \
+ get_user_pages_unlocked7, x, \
+ get_user_pages_unlocked5, x, x, x, x)(__VA_ARGS__)
+
/* Container for pinned pfns / pages */
struct frame_vector {
unsigned int nr_allocated; /* Number of frames we have space for */
int vm_insert_page(struct vm_area_struct *, unsigned long addr, struct page *);
int vm_insert_pfn(struct vm_area_struct *vma, unsigned long addr,
unsigned long pfn);
+int vm_insert_pfn_prot(struct vm_area_struct *vma, unsigned long addr,
+ unsigned long pfn, pgprot_t pgprot);
int vm_insert_mixed(struct vm_area_struct *vma, unsigned long addr,
pfn_t pfn);
int vm_iomap_memory(struct vm_area_struct *vma, phys_addr_t start, unsigned long len);
#define FOLL_MIGRATION 0x400 /* wait for page to replace migration entry */
#define FOLL_TRIED 0x800 /* a retry, previous pass started an IO */
#define FOLL_MLOCK 0x1000 /* lock present pages */
+#define FOLL_REMOTE 0x2000 /* we are working on non-current tsk/mm */
typedef int (*pte_fn_t)(pte_t *pte, pgtable_t token, unsigned long addr,
void *data);
projects / cascardo / linux.git / blobdiff