Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6
[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
20 int  fs_noerr(void) { return 0; }
21 int  fs_nosys(void) { return ENOSYS; }
22 void fs_noval(void) { return; }
23
24 void
25 fs_tosspages(
26         bhv_desc_t      *bdp,
27         xfs_off_t       first,
28         xfs_off_t       last,
29         int             fiopt)
30 {
31         bhv_vnode_t     *vp = BHV_TO_VNODE(bdp);
32         struct inode    *ip = vn_to_inode(vp);
33
34         if (VN_CACHED(vp))
35                 truncate_inode_pages(ip->i_mapping, first);
36 }
37
38 void
39 fs_flushinval_pages(
40         bhv_desc_t      *bdp,
41         xfs_off_t       first,
42         xfs_off_t       last,
43         int             fiopt)
44 {
45         bhv_vnode_t     *vp = BHV_TO_VNODE(bdp);
46         struct inode    *ip = vn_to_inode(vp);
47
48         if (VN_CACHED(vp)) {
49                 if (VN_TRUNC(vp))
50                         VUNTRUNCATE(vp);
51                 filemap_write_and_wait(ip->i_mapping);
52                 truncate_inode_pages(ip->i_mapping, first);
53         }
54 }
55
56 int
57 fs_flush_pages(
58         bhv_desc_t      *bdp,
59         xfs_off_t       first,
60         xfs_off_t       last,
61         uint64_t        flags,
62         int             fiopt)
63 {
64         bhv_vnode_t     *vp = BHV_TO_VNODE(bdp);
65         struct inode    *ip = vn_to_inode(vp);
66
67         if (VN_DIRTY(vp)) {
68                 if (VN_TRUNC(vp))
69                         VUNTRUNCATE(vp);
70                 filemap_fdatawrite(ip->i_mapping);
71                 if (flags & XFS_B_ASYNC)
72                         return 0;
73                 filemap_fdatawait(ip->i_mapping);
74         }
75         return 0;
76 }