/* * 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_rg_lops; extern const struct gfs2_log_operations gfs2_databuf_lops; extern const struct gfs2_log_operations *gfs2_log_ops[]; extern void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page); extern void gfs2_log_flush_bio(struct gfs2_sbd *sdp, int rw); 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_init_le(struct gfs2_log_element *le, const struct gfs2_log_operations *lops) { INIT_LIST_HEAD(&le->le_list); le->le_ops = lops; } static inline void lops_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) { if (le->le_ops->lo_add) le->le_ops->lo_add(sdp, le); } static inline void lops_before_commit(struct gfs2_sbd *sdp) { 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); } static inline void lops_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) { 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, ai); } 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__ */