ia64/linux-2.6.18-xen.hg

view fs/ramfs/file-mmu.c @ 524:7f8b544237bf

netfront: Allow netfront in domain 0.

This is useful if your physical network device is in a utility domain.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
author Keir Fraser <keir.fraser@citrix.com>
date Tue Apr 15 15:18:58 2008 +0100 (2008-04-15)
parents 831230e53067
children
line source
1 /* file-mmu.c: ramfs MMU-based file operations
2 *
3 * Resizable simple ram filesystem for Linux.
4 *
5 * Copyright (C) 2000 Linus Torvalds.
6 * 2000 Transmeta Corp.
7 *
8 * Usage limits added by David Gibson, Linuxcare Australia.
9 * This file is released under the GPL.
10 */
12 /*
13 * NOTE! This filesystem is probably most useful
14 * not as a real filesystem, but as an example of
15 * how virtual filesystems can be written.
16 *
17 * It doesn't get much simpler than this. Consider
18 * that this file implements the full semantics of
19 * a POSIX-compliant read-write filesystem.
20 *
21 * Note in particular how the filesystem does not
22 * need to implement any data structures of its own
23 * to keep track of the virtual data: using the VFS
24 * caches is sufficient.
25 */
27 #include <linux/fs.h>
29 const struct address_space_operations ramfs_aops = {
30 .readpage = simple_readpage,
31 .prepare_write = simple_prepare_write,
32 .commit_write = simple_commit_write
33 };
35 const struct file_operations ramfs_file_operations = {
36 .read = generic_file_read,
37 .write = generic_file_write,
38 .mmap = generic_file_mmap,
39 .fsync = simple_sync_file,
40 .sendfile = generic_file_sendfile,
41 .llseek = generic_file_llseek,
42 };
44 struct inode_operations ramfs_file_inode_operations = {
45 .getattr = simple_getattr,
46 };