diff options
Diffstat (limited to 'mm/nommu.c')
| -rw-r--r-- | mm/nommu.c | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/mm/nommu.c b/mm/nommu.c index 48a2ecfaf059..605ace8982a8 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -146,7 +146,7 @@ int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm, (VM_MAYREAD | VM_MAYWRITE) : (VM_READ | VM_WRITE); for (i = 0; i < nr_pages; i++) { - vma = find_vma(mm, start); + vma = find_extend_vma(mm, start); if (!vma) goto finish_or_fault; @@ -764,7 +764,7 @@ EXPORT_SYMBOL(find_vma); */ struct vm_area_struct *find_extend_vma(struct mm_struct *mm, unsigned long addr) { - return find_vma(mm, addr); + return find_vma(mm, addr & PAGE_MASK); } /* @@ -1209,7 +1209,7 @@ unsigned long do_mmap_pgoff(struct file *file, region->vm_flags = vm_flags; region->vm_pgoff = pgoff; - INIT_LIST_HEAD(&vma->anon_vma_node); + INIT_LIST_HEAD(&vma->anon_vma_chain); vma->vm_flags = vm_flags; vma->vm_pgoff = pgoff; @@ -1428,6 +1428,30 @@ out: return retval; } +#ifdef __ARCH_WANT_SYS_OLD_MMAP +struct mmap_arg_struct { + unsigned long addr; + unsigned long len; + unsigned long prot; + unsigned long flags; + unsigned long fd; + unsigned long offset; +}; + +SYSCALL_DEFINE1(old_mmap, struct mmap_arg_struct __user *, arg) +{ + struct mmap_arg_struct a; + + if (copy_from_user(&a, arg, sizeof(a))) + return -EFAULT; + if (a.offset & ~PAGE_MASK) + return -EINVAL; + + return sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, + a.offset >> PAGE_SHIFT); +} +#endif /* __ARCH_WANT_SYS_OLD_MMAP */ + /* * split a vma into two pieces at address 'addr', a new vma is allocated either * for the first part or the tail. |