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 #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 23 extern const struct gfs2_log_operations gfs2_glock_lops; 24 extern const struct gfs2_log_operations gfs2_buf_lops; 25 extern const struct gfs2_log_operations gfs2_revoke_lops; 26 extern const struct gfs2_log_operations gfs2_rg_lops; 27 extern const struct gfs2_log_operations gfs2_databuf_lops; 28 29 extern const struct gfs2_log_operations *gfs2_log_ops[]; 30 31 static 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 39 static 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 47 static 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 54 static 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 60 static inline void lops_incore_commit(struct gfs2_sbd *sdp, 61 struct gfs2_trans *tr) 62 { 63 int x; 64 for (x = 0; gfs2_log_ops[x]; x++) 65 if (gfs2_log_ops[x]->lo_incore_commit) 66 gfs2_log_ops[x]->lo_incore_commit(sdp, tr); 67 } 68 69 static inline void lops_before_commit(struct gfs2_sbd *sdp) 70 { 71 int x; 72 for (x = 0; gfs2_log_ops[x]; x++) 73 if (gfs2_log_ops[x]->lo_before_commit) 74 gfs2_log_ops[x]->lo_before_commit(sdp); 75 } 76 77 static inline void lops_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) 78 { 79 int x; 80 for (x = 0; gfs2_log_ops[x]; x++) 81 if (gfs2_log_ops[x]->lo_after_commit) 82 gfs2_log_ops[x]->lo_after_commit(sdp, ai); 83 } 84 85 static inline void lops_before_scan(struct gfs2_jdesc *jd, 86 struct gfs2_log_header_host *head, 87 unsigned int pass) 88 { 89 int x; 90 for (x = 0; gfs2_log_ops[x]; x++) 91 if (gfs2_log_ops[x]->lo_before_scan) 92 gfs2_log_ops[x]->lo_before_scan(jd, head, pass); 93 } 94 95 static inline int lops_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 96 struct gfs2_log_descriptor *ld, 97 __be64 *ptr, 98 unsigned int pass) 99 { 100 int x, error; 101 for (x = 0; gfs2_log_ops[x]; x++) 102 if (gfs2_log_ops[x]->lo_scan_elements) { 103 error = gfs2_log_ops[x]->lo_scan_elements(jd, start, 104 ld, ptr, pass); 105 if (error) 106 return error; 107 } 108 109 return 0; 110 } 111 112 static inline void lops_after_scan(struct gfs2_jdesc *jd, int error, 113 unsigned int pass) 114 { 115 int x; 116 for (x = 0; gfs2_log_ops[x]; x++) 117 if (gfs2_log_ops[x]->lo_before_scan) 118 gfs2_log_ops[x]->lo_after_scan(jd, error, pass); 119 } 120 121 #endif /* __LOPS_DOT_H__ */ 122 123