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 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_before_commit(struct gfs2_sbd *sdp, 48 struct gfs2_trans *tr) 49 { 50 int x; 51 for (x = 0; gfs2_log_ops[x]; x++) 52 if (gfs2_log_ops[x]->lo_before_commit) 53 gfs2_log_ops[x]->lo_before_commit(sdp, tr); 54 } 55 56 static inline void lops_after_commit(struct gfs2_sbd *sdp, 57 struct gfs2_trans *tr) 58 { 59 int x; 60 for (x = 0; gfs2_log_ops[x]; x++) 61 if (gfs2_log_ops[x]->lo_after_commit) 62 gfs2_log_ops[x]->lo_after_commit(sdp, tr); 63 } 64 65 static inline void lops_before_scan(struct gfs2_jdesc *jd, 66 struct gfs2_log_header_host *head, 67 unsigned int pass) 68 { 69 int x; 70 for (x = 0; gfs2_log_ops[x]; x++) 71 if (gfs2_log_ops[x]->lo_before_scan) 72 gfs2_log_ops[x]->lo_before_scan(jd, head, pass); 73 } 74 75 static inline int lops_scan_elements(struct gfs2_jdesc *jd, u32 start, 76 struct gfs2_log_descriptor *ld, 77 __be64 *ptr, 78 unsigned int pass) 79 { 80 int x, error; 81 for (x = 0; gfs2_log_ops[x]; x++) 82 if (gfs2_log_ops[x]->lo_scan_elements) { 83 error = gfs2_log_ops[x]->lo_scan_elements(jd, start, 84 ld, ptr, pass); 85 if (error) 86 return error; 87 } 88 89 return 0; 90 } 91 92 static inline void lops_after_scan(struct gfs2_jdesc *jd, int error, 93 unsigned int pass) 94 { 95 int x; 96 for (x = 0; gfs2_log_ops[x]; x++) 97 if (gfs2_log_ops[x]->lo_before_scan) 98 gfs2_log_ops[x]->lo_after_scan(jd, error, pass); 99 } 100 101 #endif /* __LOPS_DOT_H__ */ 102 103