[PATCH] remove set_page_count() outside mm/
[linux-2.6/verdex.git] / fs / ramfs / file-mmu.c
blob2115383dcc8defec38df0c03917c68725f4ad1d7
1 /* file-mmu.c: ramfs MMU-based file operations
3 * Resizable simple ram filesystem for Linux.
5 * Copyright (C) 2000 Linus Torvalds.
6 * 2000 Transmeta Corp.
8 * Usage limits added by David Gibson, Linuxcare Australia.
9 * This file is released under the GPL.
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.
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.
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.
27 #include <linux/module.h>
28 #include <linux/fs.h>
29 #include <linux/pagemap.h>
30 #include <linux/highmem.h>
31 #include <linux/init.h>
32 #include <linux/string.h>
33 #include <linux/smp_lock.h>
34 #include <linux/backing-dev.h>
35 #include <linux/ramfs.h>
37 #include <asm/uaccess.h>
38 #include "internal.h"
40 struct address_space_operations ramfs_aops = {
41 .readpage = simple_readpage,
42 .prepare_write = simple_prepare_write,
43 .commit_write = simple_commit_write
46 struct file_operations ramfs_file_operations = {
47 .read = generic_file_read,
48 .write = generic_file_write,
49 .mmap = generic_file_mmap,
50 .fsync = simple_sync_file,
51 .sendfile = generic_file_sendfile,
52 .llseek = generic_file_llseek,
55 struct inode_operations ramfs_file_inode_operations = {
56 .getattr = simple_getattr,