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 15 void gfs2_log_incr_head(struct gfs2_sbd *sdp); 16 u64 gfs2_log_bmap(struct gfs2_jdesc *jd, unsigned int lbn); 17 void gfs2_log_write(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd, 18 struct page *page, unsigned size, unsigned offset, 19 u64 blkno); 20 void gfs2_log_submit_bio(struct bio **biop, blk_opf_t opf); 21 void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh); 22 int gfs2_find_jhead(struct gfs2_jdesc *jd, 23 struct gfs2_log_header_host *head, bool keep_cache); 24 void gfs2_drain_revokes(struct gfs2_sbd *sdp); 25 26 static inline unsigned int buf_limit(struct gfs2_sbd *sdp) 27 { 28 return sdp->sd_ldptrs; 29 } 30 31 static inline unsigned int databuf_limit(struct gfs2_sbd *sdp) 32 { 33 return sdp->sd_ldptrs / 2; 34 } 35 36 static inline void lops_before_commit(struct gfs2_sbd *sdp, 37 struct gfs2_trans *tr) 38 { 39 int x; 40 for (x = 0; gfs2_log_ops[x]; x++) 41 if (gfs2_log_ops[x]->lo_before_commit) 42 gfs2_log_ops[x]->lo_before_commit(sdp, tr); 43 } 44 45 static inline void lops_after_commit(struct gfs2_sbd *sdp, 46 struct gfs2_trans *tr) 47 { 48 int x; 49 for (x = 0; gfs2_log_ops[x]; x++) 50 if (gfs2_log_ops[x]->lo_after_commit) 51 gfs2_log_ops[x]->lo_after_commit(sdp, tr); 52 } 53 54 static inline void lops_before_scan(struct gfs2_jdesc *jd, 55 struct gfs2_log_header_host *head, 56 unsigned int pass) 57 { 58 int x; 59 for (x = 0; gfs2_log_ops[x]; x++) 60 if (gfs2_log_ops[x]->lo_before_scan) 61 gfs2_log_ops[x]->lo_before_scan(jd, head, pass); 62 } 63 64 static inline int lops_scan_elements(struct gfs2_jdesc *jd, u32 start, 65 struct gfs2_log_descriptor *ld, 66 __be64 *ptr, 67 unsigned int pass) 68 { 69 int x, error; 70 for (x = 0; gfs2_log_ops[x]; x++) 71 if (gfs2_log_ops[x]->lo_scan_elements) { 72 error = gfs2_log_ops[x]->lo_scan_elements(jd, start, 73 ld, ptr, pass); 74 if (error) 75 return error; 76 } 77 78 return 0; 79 } 80 81 static inline void lops_after_scan(struct gfs2_jdesc *jd, int error, 82 unsigned int pass) 83 { 84 int x; 85 for (x = 0; gfs2_log_ops[x]; x++) 86 if (gfs2_log_ops[x]->lo_before_scan) 87 gfs2_log_ops[x]->lo_after_scan(jd, error, pass); 88 } 89 90 #endif /* __LOPS_DOT_H__ */ 91 92