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 extern void gfs2_drain_revokes(struct gfs2_sbd *sdp); 24 static inline unsigned int buf_limit(struct gfs2_sbd *sdp) 25 { 26 return sdp->sd_ldptrs; 27 } 28 29 static inline unsigned int databuf_limit(struct gfs2_sbd *sdp) 30 { 31 return sdp->sd_ldptrs / 2; 32 } 33 34 static inline void lops_before_commit(struct gfs2_sbd *sdp, 35 struct gfs2_trans *tr) 36 { 37 int x; 38 for (x = 0; gfs2_log_ops[x]; x++) 39 if (gfs2_log_ops[x]->lo_before_commit) 40 gfs2_log_ops[x]->lo_before_commit(sdp, tr); 41 } 42 43 static inline void lops_after_commit(struct gfs2_sbd *sdp, 44 struct gfs2_trans *tr) 45 { 46 int x; 47 for (x = 0; gfs2_log_ops[x]; x++) 48 if (gfs2_log_ops[x]->lo_after_commit) 49 gfs2_log_ops[x]->lo_after_commit(sdp, tr); 50 } 51 52 static inline void lops_before_scan(struct gfs2_jdesc *jd, 53 struct gfs2_log_header_host *head, 54 unsigned int pass) 55 { 56 int x; 57 for (x = 0; gfs2_log_ops[x]; x++) 58 if (gfs2_log_ops[x]->lo_before_scan) 59 gfs2_log_ops[x]->lo_before_scan(jd, head, pass); 60 } 61 62 static inline int lops_scan_elements(struct gfs2_jdesc *jd, u32 start, 63 struct gfs2_log_descriptor *ld, 64 __be64 *ptr, 65 unsigned int pass) 66 { 67 int x, error; 68 for (x = 0; gfs2_log_ops[x]; x++) 69 if (gfs2_log_ops[x]->lo_scan_elements) { 70 error = gfs2_log_ops[x]->lo_scan_elements(jd, start, 71 ld, ptr, pass); 72 if (error) 73 return error; 74 } 75 76 return 0; 77 } 78 79 static inline void lops_after_scan(struct gfs2_jdesc *jd, int error, 80 unsigned int pass) 81 { 82 int x; 83 for (x = 0; gfs2_log_ops[x]; x++) 84 if (gfs2_log_ops[x]->lo_before_scan) 85 gfs2_log_ops[x]->lo_after_scan(jd, error, pass); 86 } 87 88 #endif /* __LOPS_DOT_H__ */ 89 90