1/* 2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 3 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. 4 * 5 * This copyrighted material is made available to anyone wishing to use, 6 * modify, copy, or redistribute it subject to the terms and conditions 7 * of the GNU General Public License version 2. 8 */ 9 10#ifndef __LOG_DOT_H__ 11#define __LOG_DOT_H__ 12 13#include <linux/list.h> 14#include <linux/spinlock.h> 15#include <linux/writeback.h> 16#include "incore.h" 17 18/** 19 * gfs2_log_lock - acquire the right to mess with the log manager 20 * @sdp: the filesystem 21 * 22 */ 23 24static inline void gfs2_log_lock(struct gfs2_sbd *sdp) 25__acquires(&sdp->sd_log_lock) 26{ 27 spin_lock(&sdp->sd_log_lock); 28} 29 30/** 31 * gfs2_log_unlock - release the right to mess with the log manager 32 * @sdp: the filesystem 33 * 34 */ 35 36static inline void gfs2_log_unlock(struct gfs2_sbd *sdp) 37__releases(&sdp->sd_log_lock) 38{ 39 spin_unlock(&sdp->sd_log_lock); 40} 41 42static inline void gfs2_log_pointers_init(struct gfs2_sbd *sdp, 43 unsigned int value) 44{ 45 if (++value == sdp->sd_jdesc->jd_blocks) { 46 value = 0; 47 } 48 sdp->sd_log_head = sdp->sd_log_tail = value; 49} 50 51static inline void gfs2_ordered_add_inode(struct gfs2_inode *ip) 52{ 53 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); 54 55 if (!test_bit(GIF_ORDERED, &ip->i_flags)) { 56 spin_lock(&sdp->sd_ordered_lock); 57 if (!test_and_set_bit(GIF_ORDERED, &ip->i_flags)) 58 list_add(&ip->i_ordered, &sdp->sd_log_le_ordered); 59 spin_unlock(&sdp->sd_ordered_lock); 60 } 61} 62extern void gfs2_ordered_del_inode(struct gfs2_inode *ip); 63extern unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct, 64 unsigned int ssize); 65 66extern void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks); 67extern int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks); 68enum gfs2_flush_type { 69 NORMAL_FLUSH = 0, 70 SYNC_FLUSH, 71 SHUTDOWN_FLUSH, 72 FREEZE_FLUSH 73}; 74extern void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl, 75 enum gfs2_flush_type type); 76extern void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans); 77extern void gfs2_remove_from_ail(struct gfs2_bufdata *bd); 78extern void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc); 79 80extern void gfs2_log_shutdown(struct gfs2_sbd *sdp); 81extern int gfs2_logd(void *data); 82extern void gfs2_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd); 83extern void gfs2_write_revokes(struct gfs2_sbd *sdp); 84 85#endif /* __LOG_DOT_H__ */ 86