xref: /openbmc/linux/fs/gfs2/lops.h (revision e868d61272caa648214046a096e5a6bfc068dc8c)
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_host *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 
100