1/* 2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 3 * Copyright (C) 2004-2008 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#define BUF_OFFSET \ 17 ((sizeof(struct gfs2_log_descriptor) + sizeof(__be64) - 1) & \ 18 ~(sizeof(__be64) - 1)) 19#define DATABUF_OFFSET \ 20 ((sizeof(struct gfs2_log_descriptor) + (2 * sizeof(__be64) - 1)) & \ 21 ~(2 * sizeof(__be64) - 1)) 22 23extern const struct gfs2_log_operations gfs2_glock_lops; 24extern const struct gfs2_log_operations gfs2_buf_lops; 25extern const struct gfs2_log_operations gfs2_revoke_lops; 26extern const struct gfs2_log_operations gfs2_rg_lops; 27extern const struct gfs2_log_operations gfs2_databuf_lops; 28 29extern const struct gfs2_log_operations *gfs2_log_ops[]; 30 31static inline unsigned int buf_limit(struct gfs2_sbd *sdp) 32{ 33 unsigned int limit; 34 35 limit = (sdp->sd_sb.sb_bsize - BUF_OFFSET) / sizeof(__be64); 36 return limit; 37} 38 39static inline unsigned int databuf_limit(struct gfs2_sbd *sdp) 40{ 41 unsigned int limit; 42 43 limit = (sdp->sd_sb.sb_bsize - DATABUF_OFFSET) / (2 * sizeof(__be64)); 44 return limit; 45} 46 47static inline void lops_init_le(struct gfs2_log_element *le, 48 const struct gfs2_log_operations *lops) 49{ 50 INIT_LIST_HEAD(&le->le_list); 51 le->le_ops = lops; 52} 53 54static inline void lops_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) 55{ 56 if (le->le_ops->lo_add) 57 le->le_ops->lo_add(sdp, le); 58} 59 60static inline void lops_before_commit(struct gfs2_sbd *sdp) 61{ 62 int x; 63 for (x = 0; gfs2_log_ops[x]; x++) 64 if (gfs2_log_ops[x]->lo_before_commit) 65 gfs2_log_ops[x]->lo_before_commit(sdp); 66} 67 68static inline void lops_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) 69{ 70 int x; 71 for (x = 0; gfs2_log_ops[x]; x++) 72 if (gfs2_log_ops[x]->lo_after_commit) 73 gfs2_log_ops[x]->lo_after_commit(sdp, ai); 74} 75 76static inline void lops_before_scan(struct gfs2_jdesc *jd, 77 struct gfs2_log_header_host *head, 78 unsigned int pass) 79{ 80 int x; 81 for (x = 0; gfs2_log_ops[x]; x++) 82 if (gfs2_log_ops[x]->lo_before_scan) 83 gfs2_log_ops[x]->lo_before_scan(jd, head, pass); 84} 85 86static inline int lops_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 87 struct gfs2_log_descriptor *ld, 88 __be64 *ptr, 89 unsigned int pass) 90{ 91 int x, error; 92 for (x = 0; gfs2_log_ops[x]; x++) 93 if (gfs2_log_ops[x]->lo_scan_elements) { 94 error = gfs2_log_ops[x]->lo_scan_elements(jd, start, 95 ld, ptr, pass); 96 if (error) 97 return error; 98 } 99 100 return 0; 101} 102 103static inline void lops_after_scan(struct gfs2_jdesc *jd, int error, 104 unsigned int pass) 105{ 106 int x; 107 for (x = 0; gfs2_log_ops[x]; x++) 108 if (gfs2_log_ops[x]->lo_before_scan) 109 gfs2_log_ops[x]->lo_after_scan(jd, error, pass); 110} 111 112#endif /* __LOPS_DOT_H__ */ 113