[PATCH] ext2: fsid for statvfs
[linux-2.6.git] / fs / gfs2 / lops.h
1 /*
2  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
3  * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
4  *
5  * This copyrighted material is made available to anyone wishing to use,
6  * modify, copy, or redistribute it subject to the terms and conditions
7  * of the GNU General Public License version 2.
8  */
9
10 #ifndef __LOPS_DOT_H__
11 #define __LOPS_DOT_H__
12
13 #include <linux/list.h>
14 #include "incore.h"
15
16 extern const struct gfs2_log_operations gfs2_glock_lops;
17 extern const struct gfs2_log_operations gfs2_buf_lops;
18 extern const struct gfs2_log_operations gfs2_revoke_lops;
19 extern const struct gfs2_log_operations gfs2_rg_lops;
20 extern const struct gfs2_log_operations gfs2_databuf_lops;
21
22 extern const struct gfs2_log_operations *gfs2_log_ops[];
23
24 static inline void lops_init_le(struct gfs2_log_element *le,
25                                 const struct gfs2_log_operations *lops)
26 {
27         INIT_LIST_HEAD(&le->le_list);
28         le->le_ops = lops;
29 }
30
31 static inline void lops_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
32 {
33         if (le->le_ops->lo_add)
34                 le->le_ops->lo_add(sdp, le);
35 }
36
37 static inline void lops_incore_commit(struct gfs2_sbd *sdp,
38                                       struct gfs2_trans *tr)
39 {
40         int x;
41         for (x = 0; gfs2_log_ops[x]; x++)
42                 if (gfs2_log_ops[x]->lo_incore_commit)
43                         gfs2_log_ops[x]->lo_incore_commit(sdp, tr);
44 }
45
46 static inline void lops_before_commit(struct gfs2_sbd *sdp)
47 {
48         int x;
49         for (x = 0; gfs2_log_ops[x]; x++)
50                 if (gfs2_log_ops[x]->lo_before_commit)
51                         gfs2_log_ops[x]->lo_before_commit(sdp);
52 }
53
54 static inline void lops_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
55 {
56         int x;
57         for (x = 0; gfs2_log_ops[x]; x++)
58                 if (gfs2_log_ops[x]->lo_after_commit)
59                         gfs2_log_ops[x]->lo_after_commit(sdp, ai);
60 }
61
62 static inline void lops_before_scan(struct gfs2_jdesc *jd,
63                                     struct gfs2_log_header *head,
64                                     unsigned int pass)
65 {
66         int x;
67         for (x = 0; gfs2_log_ops[x]; x++)
68                 if (gfs2_log_ops[x]->lo_before_scan)
69                         gfs2_log_ops[x]->lo_before_scan(jd, head, pass);
70 }
71
72 static inline int lops_scan_elements(struct gfs2_jdesc *jd, unsigned int start,
73                                      struct gfs2_log_descriptor *ld,
74                                      __be64 *ptr,
75                                      unsigned int pass)
76 {
77         int x, error;
78         for (x = 0; gfs2_log_ops[x]; x++)
79                 if (gfs2_log_ops[x]->lo_scan_elements) {
80                         error = gfs2_log_ops[x]->lo_scan_elements(jd, start,
81                                                                   ld, ptr, pass);
82                         if (error)
83                                 return error;
84                 }
85
86         return 0;
87 }
88
89 static inline void lops_after_scan(struct gfs2_jdesc *jd, int error,
90                                    unsigned int pass)
91 {
92         int x;
93         for (x = 0; gfs2_log_ops[x]; x++)
94                 if (gfs2_log_ops[x]->lo_before_scan)
95                         gfs2_log_ops[x]->lo_after_scan(jd, error, pass);
96 }
97
98 #endif /* __LOPS_DOT_H__ */
99