#ifndef _LINUX_HUGETLB_H
#define _LINUX_HUGETLB_H
+#include <linux/fs.h>
+
#ifdef CONFIG_HUGETLB_PAGE
#include <linux/mempolicy.h>
int hugetlb_sysctl_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 *);
extern unsigned long max_huge_pages;
extern unsigned long hugepages_treat_as_movable;
+extern unsigned long nr_overcommit_huge_pages;
extern const unsigned long hugetlb_zero, hugetlb_infinity;
extern int sysctl_hugetlb_shm_group;
* 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 prepare_hugepage_range(unsigned long addr, unsigned long len)
{
- if (pgoff & (~HPAGE_MASK >> PAGE_SHIFT))
- return -EINVAL;
if (len & ~HPAGE_MASK)
return -EINVAL;
if (addr & ~HPAGE_MASK)
return 0;
}
#else
-int prepare_hugepage_range(unsigned long addr, unsigned long len,
- pgoff_t pgoff);
+int prepare_hugepage_range(unsigned long addr, unsigned long len);
#endif
#ifndef ARCH_HAS_SETCLEAR_HUGE_PTE
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)
{