diff options
Diffstat (limited to 'mm/shmem.c')
-rw-r--r-- | mm/shmem.c | 29 |
1 files changed, 10 insertions, 19 deletions
diff --git a/mm/shmem.c b/mm/shmem.c index 6b44440f1b2..0a555af8733 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -1309,29 +1309,21 @@ failed: return error; } -static struct page *shmem_fault(struct vm_area_struct *vma, - struct fault_data *fdata) +static int shmem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) { struct inode *inode = vma->vm_file->f_path.dentry->d_inode; - struct page *page = NULL; int error; + int ret; - BUG_ON(!(vma->vm_flags & VM_CAN_INVALIDATE)); + if (((loff_t)vmf->pgoff << PAGE_CACHE_SHIFT) >= i_size_read(inode)) + return VM_FAULT_SIGBUS; - if (((loff_t)fdata->pgoff << PAGE_CACHE_SHIFT) >= i_size_read(inode)) { - fdata->type = VM_FAULT_SIGBUS; - return NULL; - } - - error = shmem_getpage(inode, fdata->pgoff, &page, - SGP_FAULT, &fdata->type); - if (error) { - fdata->type = ((error == -ENOMEM)?VM_FAULT_OOM:VM_FAULT_SIGBUS); - return NULL; - } + error = shmem_getpage(inode, vmf->pgoff, &vmf->page, SGP_FAULT, &ret); + if (error) + return ((error == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS); - mark_page_accessed(page); - return page; + mark_page_accessed(vmf->page); + return ret | FAULT_RET_LOCKED; } #ifdef CONFIG_NUMA @@ -1378,7 +1370,7 @@ static int shmem_mmap(struct file *file, struct vm_area_struct *vma) { file_accessed(file); vma->vm_ops = &shmem_vm_ops; - vma->vm_flags |= VM_CAN_INVALIDATE | VM_CAN_NONLINEAR; + vma->vm_flags |= VM_CAN_NONLINEAR; return 0; } @@ -2560,6 +2552,5 @@ int shmem_zero_setup(struct vm_area_struct *vma) fput(vma->vm_file); vma->vm_file = file; vma->vm_ops = &shmem_vm_ops; - vma->vm_flags |= VM_CAN_INVALIDATE; return 0; } |