xfs_fs_subr.c
2.33 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
/*
* Copyright (c) 2000-2002,2005-2006 Silicon Graphics, Inc.
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "xfs.h"
#include "xfs_vnodeops.h"
#include "xfs_bmap_btree.h"
#include "xfs_inode.h"
#include "xfs_trace.h"
/*
* note: all filemap functions return negative error codes. These
* need to be inverted before returning to the xfs core functions.
*/
void
xfs_tosspages(
xfs_inode_t *ip,
xfs_off_t first,
xfs_off_t last,
int fiopt)
{
/* can't toss partial tail pages, so mask them out */
last &= ~(PAGE_SIZE - 1);
truncate_inode_pages_range(VFS_I(ip)->i_mapping, first, last - 1);
}
int
xfs_flushinval_pages(
xfs_inode_t *ip,
xfs_off_t first,
xfs_off_t last,
int fiopt)
{
struct address_space *mapping = VFS_I(ip)->i_mapping;
int ret = 0;
trace_xfs_pagecache_inval(ip, first, last);
xfs_iflags_clear(ip, XFS_ITRUNCATED);
ret = filemap_write_and_wait_range(mapping, first,
last == -1 ? LLONG_MAX : last);
if (!ret)
truncate_inode_pages_range(mapping, first, last);
return -ret;
}
int
xfs_flush_pages(
xfs_inode_t *ip,
xfs_off_t first,
xfs_off_t last,
uint64_t flags,
int fiopt)
{
struct address_space *mapping = VFS_I(ip)->i_mapping;
int ret = 0;
int ret2;
xfs_iflags_clear(ip, XFS_ITRUNCATED);
ret = -filemap_fdatawrite_range(mapping, first,
last == -1 ? LLONG_MAX : last);
if (flags & XBF_ASYNC)
return ret;
ret2 = xfs_wait_on_pages(ip, first, last);
if (!ret)
ret = ret2;
return ret;
}
int
xfs_wait_on_pages(
xfs_inode_t *ip,
xfs_off_t first,
xfs_off_t last)
{
struct address_space *mapping = VFS_I(ip)->i_mapping;
if (mapping_tagged(mapping, PAGECACHE_TAG_WRITEBACK)) {
return -filemap_fdatawait_range(mapping, first,
last == -1 ? ip->i_size - 1 : last);
}
return 0;
}