From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: with ECARTIS (v1.0.0; list xfs); Wed, 07 Feb 2007 04:52:30 -0800 (PST) Received: from larry.melbourne.sgi.com (larry.melbourne.sgi.com [134.14.52.130]) by oss.sgi.com (8.12.10/8.12.10/SuSE Linux 0.7) with SMTP id l17CqKm7031228 for ; Wed, 7 Feb 2007 04:52:21 -0800 Date: Wed, 7 Feb 2007 23:52:14 +1100 From: David Chinner Subject: [PATCH 1 of 2] Implement XFS ->page_mkwrite() callout Message-ID: <20070207125214.GL44411608@melbourne.sgi.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Sender: xfs-bounce@oss.sgi.com Errors-to: xfs-bounce@oss.sgi.com List-Id: xfs To: xfs@oss.sgi.com Cc: linux-fsdevel@vger.kernel.org, linux-mm@kvack.org Use the generic block_page_mkrite() to implement the XFS ->page_mkwrite() callout. Signed-Off-By: Dave Chinner --- fs/xfs/linux-2.6/xfs_file.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) Index: 2.6.x-xfs-new/fs/xfs/linux-2.6/xfs_file.c =================================================================== --- 2.6.x-xfs-new.orig/fs/xfs/linux-2.6/xfs_file.c 2007-02-07 23:00:10.000000000 +1100 +++ 2.6.x-xfs-new/fs/xfs/linux-2.6/xfs_file.c 2007-02-07 23:15:20.170880823 +1100 @@ -446,6 +446,20 @@ 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, @@ -503,12 +517,14 @@ const struct file_operations xfs_dir_fil static struct vm_operations_struct xfs_file_vm_ops = { .nopage = filemap_nopage, .populate = filemap_populate, + .page_mkwrite = xfs_vm_page_mkwrite, }; #ifdef HAVE_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