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 static inline unsigned int buf_limit(struct gfs2_sbd *sdp) 31 { 32 unsigned int limit; 33 34 limit = (sdp->sd_sb.sb_bsize - BUF_OFFSET) / sizeof(__be64); 35 return limit; 36 } 37 38 static inline unsigned int databuf_limit(struct gfs2_sbd *sdp) 39 { 40 unsigned int limit; 41 42 limit = (sdp->sd_sb.sb_bsize - DATABUF_OFFSET) / (2 * sizeof(__be64)); 43 return limit; 44 } 45 46 static inline void lops_before_commit(struct gfs2_sbd *sdp, 47 struct gfs2_trans *tr) 48 { 49 int x; 50 for (x = 0; gfs2_log_ops[x]; x++) 51 if (gfs2_log_ops[x]->lo_before_commit) 52 gfs2_log_ops[x]->lo_before_commit(sdp, tr); 53 } 54 55 static inline void lops_after_commit(struct gfs2_sbd *sdp, 56 struct gfs2_trans *tr) 57 { 58 int x; 59 for (x = 0; gfs2_log_ops[x]; x++) 60 if (gfs2_log_ops[x]->lo_after_commit) 61 gfs2_log_ops[x]->lo_after_commit(sdp, tr); 62 } 63 64 static inline void lops_before_scan(struct gfs2_jdesc *jd, 65 struct gfs2_log_header_host *head, 66 unsigned int pass) 67 { 68 int x; 69 for (x = 0; gfs2_log_ops[x]; x++) 70 if (gfs2_log_ops[x]->lo_before_scan) 71 gfs2_log_ops[x]->lo_before_scan(jd, head, pass); 72 } 73 74 static inline int lops_scan_elements(struct gfs2_jdesc *jd, u32 start, 75 struct gfs2_log_descriptor *ld, 76 __be64 *ptr, 77 unsigned int pass) 78 { 79 int x, error; 80 for (x = 0; gfs2_log_ops[x]; x++) 81 if (gfs2_log_ops[x]->lo_scan_elements) { 82 error = gfs2_log_ops[x]->lo_scan_elements(jd, start, 83 ld, ptr, pass); 84 if (error) 85 return error; 86 } 87 88 return 0; 89 } 90 91 static inline void lops_after_scan(struct gfs2_jdesc *jd, int error, 92 unsigned int pass) 93 { 94 int x; 95 for (x = 0; gfs2_log_ops[x]; x++) 96 if (gfs2_log_ops[x]->lo_before_scan) 97 gfs2_log_ops[x]->lo_after_scan(jd, error, pass); 98 } 99 100 #endif /* __LOPS_DOT_H__ */ 101 102