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 24 static 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 36 static 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 42 static 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 51 static 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 } 62 extern void gfs2_ordered_del_inode(struct gfs2_inode *ip); 63 extern unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct, 64 unsigned int ssize); 65 66 extern void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks); 67 extern int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks); 68 extern void gfs2_write_log_header(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd, 69 u64 seq, u32 tail, u32 flags, int op_flags); 70 extern void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl, 71 u32 type); 72 extern void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans); 73 extern void gfs2_remove_from_ail(struct gfs2_bufdata *bd); 74 extern void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc); 75 76 extern void gfs2_log_shutdown(struct gfs2_sbd *sdp); 77 extern int gfs2_logd(void *data); 78 extern void gfs2_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd); 79 extern void gfs2_write_revokes(struct gfs2_sbd *sdp); 80 81 #endif /* __LOG_DOT_H__ */ 82