From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Mon, 19 Mar 2007 10:31:13 +1100 From: David Chinner Subject: [PATCH 2 of 2] Make XFS use block_page_mkwrite() Message-ID: <20070318233113.GB32597093@melbourne.sgi.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Sender: owner-linux-mm@kvack.org Return-Path: To: lkml Cc: linux-mm , linux-fsdevel List-ID: Implement ->page_mkwrite in XFS. 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 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org