xref: /linux/fs/gfs2/lops.h (revision 0ea5c948cb64bab5bc7a5516774eb8536f05aa0d)
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
4  * Copyright (C) 2004-2008 Red Hat, Inc.  All rights reserved.
5  */
6 
7 #ifndef __LOPS_DOT_H__
8 #define __LOPS_DOT_H__
9 
10 #include <linux/list.h>
11 #include "incore.h"
12 
13 extern const struct gfs2_log_operations *gfs2_log_ops[];
14 
15 void gfs2_log_incr_head(struct gfs2_sbd *sdp);
16 u64 gfs2_log_bmap(struct gfs2_jdesc *jd, unsigned int lbn);
17 void gfs2_log_write(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd,
18 		    struct page *page, unsigned size, unsigned offset,
19 		    u64 blkno);
20 void gfs2_log_submit_bio(struct bio **biop, blk_opf_t opf);
21 void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh);
22 int gfs2_find_jhead(struct gfs2_jdesc *jd,
23 		    struct gfs2_log_header_host *head, bool keep_cache);
24 void gfs2_drain_revokes(struct gfs2_sbd *sdp);
25 
buf_limit(struct gfs2_sbd * sdp)26 static inline unsigned int buf_limit(struct gfs2_sbd *sdp)
27 {
28 	return sdp->sd_ldptrs;
29 }
30 
databuf_limit(struct gfs2_sbd * sdp)31 static inline unsigned int databuf_limit(struct gfs2_sbd *sdp)
32 {
33 	return sdp->sd_ldptrs / 2;
34 }
35 
lops_before_commit(struct gfs2_sbd * sdp,struct gfs2_trans * tr)36 static inline void lops_before_commit(struct gfs2_sbd *sdp,
37 				      struct gfs2_trans *tr)
38 {
39 	int x;
40 	for (x = 0; gfs2_log_ops[x]; x++)
41 		if (gfs2_log_ops[x]->lo_before_commit)
42 			gfs2_log_ops[x]->lo_before_commit(sdp, tr);
43 }
44 
lops_after_commit(struct gfs2_sbd * sdp,struct gfs2_trans * tr)45 static inline void lops_after_commit(struct gfs2_sbd *sdp,
46 				     struct gfs2_trans *tr)
47 {
48 	int x;
49 	for (x = 0; gfs2_log_ops[x]; x++)
50 		if (gfs2_log_ops[x]->lo_after_commit)
51 			gfs2_log_ops[x]->lo_after_commit(sdp, tr);
52 }
53 
lops_before_scan(struct gfs2_jdesc * jd,struct gfs2_log_header_host * head,unsigned int pass)54 static inline void lops_before_scan(struct gfs2_jdesc *jd,
55 				    struct gfs2_log_header_host *head,
56 				    unsigned int pass)
57 {
58 	int x;
59 	for (x = 0; gfs2_log_ops[x]; x++)
60 		if (gfs2_log_ops[x]->lo_before_scan)
61 			gfs2_log_ops[x]->lo_before_scan(jd, head, pass);
62 }
63 
lops_scan_elements(struct gfs2_jdesc * jd,u32 start,struct gfs2_log_descriptor * ld,__be64 * ptr,unsigned int pass)64 static inline int lops_scan_elements(struct gfs2_jdesc *jd, u32 start,
65 				     struct gfs2_log_descriptor *ld,
66 				     __be64 *ptr,
67 				     unsigned int pass)
68 {
69 	int x, error;
70 	for (x = 0; gfs2_log_ops[x]; x++)
71 		if (gfs2_log_ops[x]->lo_scan_elements) {
72 			error = gfs2_log_ops[x]->lo_scan_elements(jd, start,
73 								  ld, ptr, pass);
74 			if (error)
75 				return error;
76 		}
77 
78 	return 0;
79 }
80 
lops_after_scan(struct gfs2_jdesc * jd,int error,unsigned int pass)81 static inline void lops_after_scan(struct gfs2_jdesc *jd, int error,
82 				   unsigned int pass)
83 {
84 	int x;
85 	for (x = 0; gfs2_log_ops[x]; x++)
86 		if (gfs2_log_ops[x]->lo_before_scan)
87 			gfs2_log_ops[x]->lo_after_scan(jd, error, pass);
88 }
89 
90 #endif /* __LOPS_DOT_H__ */
91 
92