#include <linux/mempolicy.h>
#include <linux/shm.h>
#include <asm/tlbflush.h>
+#include <asm/hugetlb.h>
struct ctl_table;
return vma->vm_flags & VM_HUGETLB;
}
+void reset_vma_resv_huge_pages(struct vm_area_struct *vma);
int hugetlb_sysctl_handler(struct ctl_table *, int, struct file *, void __user *, size_t *, loff_t *);
+int hugetlb_overcommit_handler(struct ctl_table *, int, struct file *, void __user *, size_t *, loff_t *);
int hugetlb_treat_movable_handler(struct ctl_table *, int, struct file *, void __user *, size_t *, loff_t *);
int copy_hugetlb_page_range(struct mm_struct *, struct mm_struct *, struct vm_area_struct *);
-int follow_hugetlb_page(struct mm_struct *, struct vm_area_struct *, struct page **, struct vm_area_struct **, unsigned long *, int *, int);
+int follow_hugetlb_page(struct mm_struct *, struct vm_area_struct *, struct page **, struct vm_area_struct **, unsigned long *, int *, int, int);
void unmap_hugepage_range(struct vm_area_struct *, unsigned long, unsigned long);
void __unmap_hugepage_range(struct vm_area_struct *, unsigned long, unsigned long);
int hugetlb_prefault(struct address_space *, struct vm_area_struct *);
unsigned long hugetlb_total_pages(void);
int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma,
unsigned long address, int write_access);
-int hugetlb_reserve_pages(struct inode *inode, long from, long to);
+int hugetlb_reserve_pages(struct inode *inode, long from, long to,
+ struct vm_area_struct *vma);
void hugetlb_unreserve_pages(struct inode *inode, long offset, long freed);
extern unsigned long max_huge_pages;
+extern unsigned long sysctl_overcommit_huge_pages;
extern unsigned long hugepages_treat_as_movable;
extern const unsigned long hugetlb_zero, hugetlb_infinity;
extern int sysctl_hugetlb_shm_group;
void hugetlb_change_protection(struct vm_area_struct *vma,
unsigned long address, unsigned long end, pgprot_t newprot);
-#ifndef ARCH_HAS_HUGEPAGE_ONLY_RANGE
-#define is_hugepage_only_range(mm, addr, len) 0
-#endif
-
-#ifndef ARCH_HAS_HUGETLB_FREE_PGD_RANGE
-#define hugetlb_free_pgd_range free_pgd_range
-#else
-void hugetlb_free_pgd_range(struct mmu_gather **tlb, unsigned long addr,
- unsigned long end, unsigned long floor,
- unsigned long ceiling);
-#endif
+#else /* !CONFIG_HUGETLB_PAGE */
-#ifndef ARCH_HAS_PREPARE_HUGEPAGE_RANGE
-/*
- * If the arch doesn't supply something else, assume that hugepage
- * size aligned regions are ok without further preparation.
- */
-static inline int prepare_hugepage_range(unsigned long addr, unsigned long len,
- pgoff_t pgoff)
+static inline int is_vm_hugetlb_page(struct vm_area_struct *vma)
{
- if (pgoff & (~HPAGE_MASK >> PAGE_SHIFT))
- return -EINVAL;
- if (len & ~HPAGE_MASK)
- return -EINVAL;
- if (addr & ~HPAGE_MASK)
- return -EINVAL;
return 0;
}
-#else
-int prepare_hugepage_range(unsigned long addr, unsigned long len,
- pgoff_t pgoff);
-#endif
-
-#ifndef ARCH_HAS_SETCLEAR_HUGE_PTE
-#define set_huge_pte_at(mm, addr, ptep, pte) set_pte_at(mm, addr, ptep, pte)
-#define huge_ptep_get_and_clear(mm, addr, ptep) ptep_get_and_clear(mm, addr, ptep)
-#else
-void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
- pte_t *ptep, pte_t pte);
-pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
- pte_t *ptep);
-#endif
-#ifndef ARCH_HAS_HUGETLB_PREFAULT_HOOK
-#define hugetlb_prefault_arch_hook(mm) do { } while (0)
-#else
-void hugetlb_prefault_arch_hook(struct mm_struct *mm);
-#endif
-
-#else /* !CONFIG_HUGETLB_PAGE */
-
-static inline int is_vm_hugetlb_page(struct vm_area_struct *vma)
+static inline void reset_vma_resv_huge_pages(struct vm_area_struct *vma)
{
- return 0;
}
+
static inline unsigned long hugetlb_total_pages(void)
{
return 0;
}
-#define follow_hugetlb_page(m,v,p,vs,a,b,i) ({ BUG(); 0; })
+#define follow_hugetlb_page(m,v,p,vs,a,b,i,w) ({ BUG(); 0; })
#define follow_huge_addr(mm, addr, write) ERR_PTR(-EINVAL)
#define copy_hugetlb_page_range(src, dst, vma) ({ BUG(); 0; })
#define hugetlb_prefault(mapping, vma) ({ BUG(); 0; })
#define hugetlb_report_meminfo(buf) 0
#define hugetlb_report_node_meminfo(n, buf) 0
#define follow_huge_pmd(mm, addr, pmd, write) NULL
-#define prepare_hugepage_range(addr,len,pgoff) (-EINVAL)
+#define prepare_hugepage_range(addr,len) (-EINVAL)
#define pmd_huge(x) 0
#define is_hugepage_only_range(mm, addr, len) 0
#define hugetlb_free_pgd_range(tlb, addr, end, floor, ceiling) ({BUG(); 0; })
extern const struct file_operations hugetlbfs_file_operations;
extern struct vm_operations_struct hugetlb_vm_ops;
struct file *hugetlb_file_setup(const char *name, size_t);
-int hugetlb_get_quota(struct address_space *mapping);
-void hugetlb_put_quota(struct address_space *mapping);
+int hugetlb_get_quota(struct address_space *mapping, long delta);
+void hugetlb_put_quota(struct address_space *mapping, long delta);
+
+#define BLOCKS_PER_HUGEPAGE (HPAGE_SIZE / 512)
static inline int is_file_hugepages(struct file *file)
{