| /* |
| * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
| * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved. |
| * |
| * This copyrighted material is made available to anyone wishing to use, |
| * modify, copy, or redistribute it subject to the terms and conditions |
| * of the GNU General Public License version 2. |
| */ |
| |
| #ifndef __LOPS_DOT_H__ |
| #define __LOPS_DOT_H__ |
| |
| #include <linux/list.h> |
| #include "incore.h" |
| |
| #define BUF_OFFSET \ |
| ((sizeof(struct gfs2_log_descriptor) + sizeof(__be64) - 1) & \ |
| ~(sizeof(__be64) - 1)) |
| #define DATABUF_OFFSET \ |
| ((sizeof(struct gfs2_log_descriptor) + (2 * sizeof(__be64) - 1)) & \ |
| ~(2 * sizeof(__be64) - 1)) |
| |
| extern const struct gfs2_log_operations gfs2_glock_lops; |
| extern const struct gfs2_log_operations gfs2_buf_lops; |
| extern const struct gfs2_log_operations gfs2_revoke_lops; |
| extern const struct gfs2_log_operations gfs2_databuf_lops; |
| |
| extern const struct gfs2_log_operations *gfs2_log_ops[]; |
| extern u64 gfs2_log_bmap(struct gfs2_sbd *sdp); |
| extern void gfs2_log_write(struct gfs2_sbd *sdp, struct page *page, |
| unsigned size, unsigned offset, u64 blkno); |
| extern void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page); |
| extern void gfs2_log_submit_bio(struct bio **biop, int opf); |
| extern void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh); |
| extern int gfs2_find_jhead(struct gfs2_jdesc *jd, |
| struct gfs2_log_header_host *head); |
| |
| static inline unsigned int buf_limit(struct gfs2_sbd *sdp) |
| { |
| unsigned int limit; |
| |
| limit = (sdp->sd_sb.sb_bsize - BUF_OFFSET) / sizeof(__be64); |
| return limit; |
| } |
| |
| static inline unsigned int databuf_limit(struct gfs2_sbd *sdp) |
| { |
| unsigned int limit; |
| |
| limit = (sdp->sd_sb.sb_bsize - DATABUF_OFFSET) / (2 * sizeof(__be64)); |
| return limit; |
| } |
| |
| static inline void lops_before_commit(struct gfs2_sbd *sdp, |
| struct gfs2_trans *tr) |
| { |
| int x; |
| for (x = 0; gfs2_log_ops[x]; x++) |
| if (gfs2_log_ops[x]->lo_before_commit) |
| gfs2_log_ops[x]->lo_before_commit(sdp, tr); |
| } |
| |
| static inline void lops_after_commit(struct gfs2_sbd *sdp, |
| struct gfs2_trans *tr) |
| { |
| int x; |
| for (x = 0; gfs2_log_ops[x]; x++) |
| if (gfs2_log_ops[x]->lo_after_commit) |
| gfs2_log_ops[x]->lo_after_commit(sdp, tr); |
| } |
| |
| static inline void lops_before_scan(struct gfs2_jdesc *jd, |
| struct gfs2_log_header_host *head, |
| unsigned int pass) |
| { |
| int x; |
| for (x = 0; gfs2_log_ops[x]; x++) |
| if (gfs2_log_ops[x]->lo_before_scan) |
| gfs2_log_ops[x]->lo_before_scan(jd, head, pass); |
| } |
| |
| static inline int lops_scan_elements(struct gfs2_jdesc *jd, unsigned int start, |
| struct gfs2_log_descriptor *ld, |
| __be64 *ptr, |
| unsigned int pass) |
| { |
| int x, error; |
| for (x = 0; gfs2_log_ops[x]; x++) |
| if (gfs2_log_ops[x]->lo_scan_elements) { |
| error = gfs2_log_ops[x]->lo_scan_elements(jd, start, |
| ld, ptr, pass); |
| if (error) |
| return error; |
| } |
| |
| return 0; |
| } |
| |
| static inline void lops_after_scan(struct gfs2_jdesc *jd, int error, |
| unsigned int pass) |
| { |
| int x; |
| for (x = 0; gfs2_log_ops[x]; x++) |
| if (gfs2_log_ops[x]->lo_before_scan) |
| gfs2_log_ops[x]->lo_after_scan(jd, error, pass); |
| } |
| |
| #endif /* __LOPS_DOT_H__ */ |
| |