diff options
| -rw-r--r-- | fs/fuse/file.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 944acc096752..6fb9425c23c6 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -1618,14 +1618,17 @@ static void fuse_vma_close(struct vm_area_struct *vma) static int fuse_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) { struct page *page = vmf->page; - /* - * Don't use page->mapping as it may become NULL from a - * concurrent truncate. - */ - struct inode *inode = vma->vm_file->f_mapping->host; + struct inode *inode = file_inode(vma->vm_file); + + file_update_time(vma->vm_file); + lock_page(page); + if (page->mapping != inode->i_mapping) { + unlock_page(page); + return VM_FAULT_NOPAGE; + } fuse_wait_on_page_writeback(inode, page->index); - return 0; + return VM_FAULT_LOCKED; } static const struct vm_operations_struct fuse_file_vm_ops = { |