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 #include "inode.h" 18 19 /** 20 * gfs2_log_lock - acquire the right to mess with the log manager 21 * @sdp: the filesystem 22 * 23 */ 24 25 static inline void gfs2_log_lock(struct gfs2_sbd *sdp) 26 __acquires(&sdp->sd_log_lock) 27 { 28 spin_lock(&sdp->sd_log_lock); 29 } 30 31 /** 32 * gfs2_log_unlock - release the right to mess with the log manager 33 * @sdp: the filesystem 34 * 35 */ 36 37 static inline void gfs2_log_unlock(struct gfs2_sbd *sdp) 38 __releases(&sdp->sd_log_lock) 39 { 40 spin_unlock(&sdp->sd_log_lock); 41 } 42 43 static inline void gfs2_log_pointers_init(struct gfs2_sbd *sdp, 44 unsigned int value) 45 { 46 if (++value == sdp->sd_jdesc->jd_blocks) { 47 value = 0; 48 } 49 sdp->sd_log_head = sdp->sd_log_tail = value; 50 } 51 52 static inline void gfs2_ordered_add_inode(struct gfs2_inode *ip) 53 { 54 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); 55 56 if (gfs2_is_jdata(ip) || !gfs2_is_ordered(sdp)) 57 return; 58 59 if (!test_bit(GIF_ORDERED, &ip->i_flags)) { 60 spin_lock(&sdp->sd_ordered_lock); 61 if (!test_and_set_bit(GIF_ORDERED, &ip->i_flags)) 62 list_add(&ip->i_ordered, &sdp->sd_log_le_ordered); 63 spin_unlock(&sdp->sd_ordered_lock); 64 } 65 } 66 extern void gfs2_ordered_del_inode(struct gfs2_inode *ip); 67 extern unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct, 68 unsigned int ssize); 69 70 extern void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks); 71 extern int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks); 72 extern void gfs2_write_log_header(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd, 73 u64 seq, u32 tail, u32 flags, int op_flags); 74 extern void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl, 75 u32 type); 76 extern void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans); 77 extern void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc); 78 79 extern void gfs2_log_shutdown(struct gfs2_sbd *sdp); 80 extern int gfs2_logd(void *data); 81 extern void gfs2_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd); 82 extern void gfs2_write_revokes(struct gfs2_sbd *sdp); 83 84 #endif /* __LOG_DOT_H__ */ 85