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authorChristoph Hellwig <hch@infradead.org>2010-06-23 04:11:15 -0400
committerAlex Elder <aelder@sgi.com>2010-07-26 14:16:33 -0400
commit288699fecaffa1ef8f75f92020cbb593a772e487 (patch)
tree0b8dff3cff671a429739e1b30c8dcfedc40c19a7 /fs/xfs/xfs_dmapi.h
parentb37fa16e78d6f9790462b3181602a26b5af36260 (diff)
xfs: drop dmapi hooks
Dmapi support was never merged upstream, but we still have a lot of hooks bloating XFS for it, all over the fast pathes of the filesystem. This patch drops over 700 lines of dmapi overhead. If we'll ever get HSM support in mainline at least the namespace events can be done much saner in the VFS instead of the individual filesystem, so it's not like this is much help for future work. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com>
Diffstat (limited to 'fs/xfs/xfs_dmapi.h')
-rw-r--r--fs/xfs/xfs_dmapi.h170
1 files changed, 0 insertions, 170 deletions
diff --git a/fs/xfs/xfs_dmapi.h b/fs/xfs/xfs_dmapi.h
deleted file mode 100644
index 2813cdd72375..000000000000
--- a/fs/xfs/xfs_dmapi.h
+++ /dev/null
@@ -1,170 +0,0 @@
1/*
2 * Copyright (c) 2000-2005 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#ifndef __XFS_DMAPI_H__
19#define __XFS_DMAPI_H__
20
21/* Values used to define the on-disk version of dm_attrname_t. All
22 * on-disk attribute names start with the 8-byte string "SGI_DMI_".
23 *
24 * In the on-disk inode, DMAPI attribute names consist of the user-provided
25 * name with the DMATTR_PREFIXSTRING pre-pended. This string must NEVER be
26 * changed.
27 */
28
29#define DMATTR_PREFIXLEN 8
30#define DMATTR_PREFIXSTRING "SGI_DMI_"
31
32typedef enum {
33 DM_EVENT_INVALID = -1,
34 DM_EVENT_CANCEL = 0, /* not supported */
35 DM_EVENT_MOUNT = 1,
36 DM_EVENT_PREUNMOUNT = 2,
37 DM_EVENT_UNMOUNT = 3,
38 DM_EVENT_DEBUT = 4, /* not supported */
39 DM_EVENT_CREATE = 5,
40 DM_EVENT_CLOSE = 6, /* not supported */
41 DM_EVENT_POSTCREATE = 7,
42 DM_EVENT_REMOVE = 8,
43 DM_EVENT_POSTREMOVE = 9,
44 DM_EVENT_RENAME = 10,
45 DM_EVENT_POSTRENAME = 11,
46 DM_EVENT_LINK = 12,
47 DM_EVENT_POSTLINK = 13,
48 DM_EVENT_SYMLINK = 14,
49 DM_EVENT_POSTSYMLINK = 15,
50 DM_EVENT_READ = 16,
51 DM_EVENT_WRITE = 17,
52 DM_EVENT_TRUNCATE = 18,
53 DM_EVENT_ATTRIBUTE = 19,
54 DM_EVENT_DESTROY = 20,
55 DM_EVENT_NOSPACE = 21,
56 DM_EVENT_USER = 22,
57 DM_EVENT_MAX = 23
58} dm_eventtype_t;
59#define HAVE_DM_EVENTTYPE_T
60
61typedef enum {
62 DM_RIGHT_NULL,
63 DM_RIGHT_SHARED,
64 DM_RIGHT_EXCL
65} dm_right_t;
66#define HAVE_DM_RIGHT_T
67
68/* Defines for determining if an event message should be sent. */
69#ifdef HAVE_DMAPI
70#define DM_EVENT_ENABLED(ip, event) ( \
71 unlikely ((ip)->i_mount->m_flags & XFS_MOUNT_DMAPI) && \
72 ( ((ip)->i_d.di_dmevmask & (1 << event)) || \
73 ((ip)->i_mount->m_dmevmask & (1 << event)) ) \
74 )
75#else
76#define DM_EVENT_ENABLED(ip, event) (0)
77#endif
78
79#define DM_XFS_VALID_FS_EVENTS ( \
80 (1 << DM_EVENT_PREUNMOUNT) | \
81 (1 << DM_EVENT_UNMOUNT) | \
82 (1 << DM_EVENT_NOSPACE) | \
83 (1 << DM_EVENT_DEBUT) | \
84 (1 << DM_EVENT_CREATE) | \
85 (1 << DM_EVENT_POSTCREATE) | \
86 (1 << DM_EVENT_REMOVE) | \
87 (1 << DM_EVENT_POSTREMOVE) | \
88 (1 << DM_EVENT_RENAME) | \
89 (1 << DM_EVENT_POSTRENAME) | \
90 (1 << DM_EVENT_LINK) | \
91 (1 << DM_EVENT_POSTLINK) | \
92 (1 << DM_EVENT_SYMLINK) | \
93 (1 << DM_EVENT_POSTSYMLINK) | \
94 (1 << DM_EVENT_ATTRIBUTE) | \
95 (1 << DM_EVENT_DESTROY) )
96
97/* Events valid in dm_set_eventlist() when called with a file handle for
98 a regular file or a symlink. These events are persistent.
99*/
100
101#define DM_XFS_VALID_FILE_EVENTS ( \
102 (1 << DM_EVENT_ATTRIBUTE) | \
103 (1 << DM_EVENT_DESTROY) )
104
105/* Events valid in dm_set_eventlist() when called with a file handle for
106 a directory. These events are persistent.
107*/
108
109#define DM_XFS_VALID_DIRECTORY_EVENTS ( \
110 (1 << DM_EVENT_CREATE) | \
111 (1 << DM_EVENT_POSTCREATE) | \
112 (1 << DM_EVENT_REMOVE) | \
113 (1 << DM_EVENT_POSTREMOVE) | \
114 (1 << DM_EVENT_RENAME) | \
115 (1 << DM_EVENT_POSTRENAME) | \
116 (1 << DM_EVENT_LINK) | \
117 (1 << DM_EVENT_POSTLINK) | \
118 (1 << DM_EVENT_SYMLINK) | \
119 (1 << DM_EVENT_POSTSYMLINK) | \
120 (1 << DM_EVENT_ATTRIBUTE) | \
121 (1 << DM_EVENT_DESTROY) )
122
123/* Events supported by the XFS filesystem. */
124#define DM_XFS_SUPPORTED_EVENTS ( \
125 (1 << DM_EVENT_MOUNT) | \
126 (1 << DM_EVENT_PREUNMOUNT) | \
127 (1 << DM_EVENT_UNMOUNT) | \
128 (1 << DM_EVENT_NOSPACE) | \
129 (1 << DM_EVENT_CREATE) | \
130 (1 << DM_EVENT_POSTCREATE) | \
131 (1 << DM_EVENT_REMOVE) | \
132 (1 << DM_EVENT_POSTREMOVE) | \
133 (1 << DM_EVENT_RENAME) | \
134 (1 << DM_EVENT_POSTRENAME) | \
135 (1 << DM_EVENT_LINK) | \
136 (1 << DM_EVENT_POSTLINK) | \
137 (1 << DM_EVENT_SYMLINK) | \
138 (1 << DM_EVENT_POSTSYMLINK) | \
139 (1 << DM_EVENT_READ) | \
140 (1 << DM_EVENT_WRITE) | \
141 (1 << DM_EVENT_TRUNCATE) | \
142 (1 << DM_EVENT_ATTRIBUTE) | \
143 (1 << DM_EVENT_DESTROY) )
144
145
146/*
147 * Definitions used for the flags field on dm_send_*_event().
148 */
149
150#define DM_FLAGS_NDELAY 0x001 /* return EAGAIN after dm_pending() */
151#define DM_FLAGS_UNWANTED 0x002 /* event not in fsys dm_eventset_t */
152#define DM_FLAGS_IMUX 0x004 /* thread holds i_mutex */
153#define DM_FLAGS_IALLOCSEM_RD 0x010 /* thread holds i_alloc_sem rd */
154#define DM_FLAGS_IALLOCSEM_WR 0x020 /* thread holds i_alloc_sem wr */
155
156/*
157 * Pull in platform specific event flags defines
158 */
159#include "xfs_dmapi_priv.h"
160
161/*
162 * Macros to turn caller specified delay/block flags into
163 * dm_send_xxxx_event flag DM_FLAGS_NDELAY.
164 */
165
166#define FILP_DELAY_FLAG(filp) ((filp->f_flags&(O_NDELAY|O_NONBLOCK)) ? \
167 DM_FLAGS_NDELAY : 0)
168#define AT_DELAY_FLAG(f) ((f & XFS_ATTR_NONBLOCK) ? DM_FLAGS_NDELAY : 0)
169
170#endif /* __XFS_DMAPI_H__ */
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