diff options
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_file.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/fs/xfs/linux-2.6/xfs_file.c b/fs/xfs/linux-2.6/xfs_file.c index cbcd40c8c2a..b4c936485d1 100644 --- a/fs/xfs/linux-2.6/xfs_file.c +++ b/fs/xfs/linux-2.6/xfs_file.c @@ -413,6 +413,20 @@ xfs_file_open_exec( } #endif /* HAVE_FOP_OPEN_EXEC */ +/* + * mmap()d file has taken write protection fault and is being made + * writable. We can set the page state up correctly for a writable + * page, which means we can do correct delalloc accounting (ENOSPC + * checking!) and unwritten extent mapping. + */ +STATIC int +xfs_vm_page_mkwrite( + struct vm_area_struct *vma, + struct page *page) +{ + return block_page_mkwrite(vma, page, xfs_get_blocks); +} + const struct file_operations xfs_file_operations = { .llseek = generic_file_llseek, .read = do_sync_read, @@ -466,12 +480,14 @@ const struct file_operations xfs_dir_file_operations = { static struct vm_operations_struct xfs_file_vm_ops = { .nopage = filemap_nopage, .populate = filemap_populate, + .page_mkwrite = xfs_vm_page_mkwrite, }; #ifdef CONFIG_XFS_DMAPI static struct vm_operations_struct xfs_dmapi_file_vm_ops = { .nopage = xfs_vm_nopage, .populate = filemap_populate, + .page_mkwrite = xfs_vm_page_mkwrite, #ifdef HAVE_VMOP_MPROTECT .mprotect = xfs_vm_mprotect, #endif |