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