Merge branches 'x86/prototypes', 'x86/x2apic' and 'x86/debug' into x86/core
[linux-2.6] / fs / xfs / linux-2.6 / xfs_fs_subr.c
1 /*
2  * Copyright (c) 2000-2002,2005-2006 Silicon Graphics, Inc.
3  * All Rights Reserved.
4  *
5  * This program is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU General Public License as
7  * published by the Free Software Foundation.
8  *
9  * This program is distributed in the hope that it would be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program; if not, write the Free Software Foundation,
16  * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
17  */
18 #include "xfs.h"
19 #include "xfs_vnodeops.h"
20 #include "xfs_bmap_btree.h"
21 #include "xfs_inode.h"
22
23 int  fs_noerr(void) { return 0; }
24 int  fs_nosys(void) { return ENOSYS; }
25 void fs_noval(void) { return; }
26
27 void
28 xfs_tosspages(
29         xfs_inode_t     *ip,
30         xfs_off_t       first,
31         xfs_off_t       last,
32         int             fiopt)
33 {
34         struct address_space *mapping = VFS_I(ip)->i_mapping;
35
36         if (mapping->nrpages)
37                 truncate_inode_pages(mapping, first);
38 }
39
40 int
41 xfs_flushinval_pages(
42         xfs_inode_t     *ip,
43         xfs_off_t       first,
44         xfs_off_t       last,
45         int             fiopt)
46 {
47         struct address_space *mapping = VFS_I(ip)->i_mapping;
48         int             ret = 0;
49
50         if (mapping->nrpages) {
51                 xfs_iflags_clear(ip, XFS_ITRUNCATED);
52                 ret = filemap_write_and_wait(mapping);
53                 if (!ret)
54                         truncate_inode_pages(mapping, first);
55         }
56         return ret;
57 }
58
59 int
60 xfs_flush_pages(
61         xfs_inode_t     *ip,
62         xfs_off_t       first,
63         xfs_off_t       last,
64         uint64_t        flags,
65         int             fiopt)
66 {
67         struct address_space *mapping = VFS_I(ip)->i_mapping;
68         int             ret = 0;
69         int             ret2;
70
71         if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) {
72                 xfs_iflags_clear(ip, XFS_ITRUNCATED);
73                 ret = filemap_fdatawrite(mapping);
74                 if (flags & XFS_B_ASYNC)
75                         return ret;
76                 ret2 = filemap_fdatawait(mapping);
77                 if (!ret)
78                         ret = ret2;
79         }
80         return ret;
81 }