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 #define BUF_OFFSET \ 14 ((sizeof(struct gfs2_log_descriptor) + sizeof(__be64) - 1) & \ 15 ~(sizeof(__be64) - 1)) 16 #define DATABUF_OFFSET \ 17 ((sizeof(struct gfs2_log_descriptor) + (2 * sizeof(__be64) - 1)) & \ 18 ~(2 * sizeof(__be64) - 1)) 19 20 extern const struct gfs2_log_operations *gfs2_log_ops[]; 21 extern void gfs2_log_incr_head(struct gfs2_sbd *sdp); 22 extern u64 gfs2_log_bmap(struct gfs2_jdesc *jd, unsigned int lbn); 23 extern void gfs2_log_write(struct gfs2_sbd *sdp, struct page *page, 24 unsigned size, unsigned offset, u64 blkno); 25 extern void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page); 26 extern void gfs2_log_submit_bio(struct bio **biop, int opf); 27 extern void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh); 28 extern int gfs2_find_jhead(struct gfs2_jdesc *jd, 29 struct gfs2_log_header_host *head, bool keep_cache); 30 extern void gfs2_meta_sync(struct gfs2_glock *gl); 31 32 static inline unsigned int buf_limit(struct gfs2_sbd *sdp) 33 { 34 unsigned int limit; 35 36 limit = (sdp->sd_sb.sb_bsize - BUF_OFFSET) / sizeof(__be64); 37 return limit; 38 } 39 40 static inline unsigned int databuf_limit(struct gfs2_sbd *sdp) 41 { 42 unsigned int limit; 43 44 limit = (sdp->sd_sb.sb_bsize - DATABUF_OFFSET) / (2 * sizeof(__be64)); 45 return limit; 46 } 47 48 static inline void lops_before_commit(struct gfs2_sbd *sdp, 49 struct gfs2_trans *tr) 50 { 51 int x; 52 for (x = 0; gfs2_log_ops[x]; x++) 53 if (gfs2_log_ops[x]->lo_before_commit) 54 gfs2_log_ops[x]->lo_before_commit(sdp, tr); 55 } 56 57 static inline void lops_after_commit(struct gfs2_sbd *sdp, 58 struct gfs2_trans *tr) 59 { 60 int x; 61 for (x = 0; gfs2_log_ops[x]; x++) 62 if (gfs2_log_ops[x]->lo_after_commit) 63 gfs2_log_ops[x]->lo_after_commit(sdp, tr); 64 } 65 66 static inline void lops_before_scan(struct gfs2_jdesc *jd, 67 struct gfs2_log_header_host *head, 68 unsigned int pass) 69 { 70 int x; 71 for (x = 0; gfs2_log_ops[x]; x++) 72 if (gfs2_log_ops[x]->lo_before_scan) 73 gfs2_log_ops[x]->lo_before_scan(jd, head, pass); 74 } 75 76 static inline int lops_scan_elements(struct gfs2_jdesc *jd, u32 start, 77 struct gfs2_log_descriptor *ld, 78 __be64 *ptr, 79 unsigned int pass) 80 { 81 int x, error; 82 for (x = 0; gfs2_log_ops[x]; x++) 83 if (gfs2_log_ops[x]->lo_scan_elements) { 84 error = gfs2_log_ops[x]->lo_scan_elements(jd, start, 85 ld, ptr, pass); 86 if (error) 87 return error; 88 } 89 90 return 0; 91 } 92 93 static inline void lops_after_scan(struct gfs2_jdesc *jd, int error, 94 unsigned int pass) 95 { 96 int x; 97 for (x = 0; gfs2_log_ops[x]; x++) 98 if (gfs2_log_ops[x]->lo_before_scan) 99 gfs2_log_ops[x]->lo_after_scan(jd, error, pass); 100 } 101 102 #endif /* __LOPS_DOT_H__ */ 103 104