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TOMOYO Linux Cross Reference
Linux/fs/gfs2/log.h

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  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 enum gfs2_flush_type {
 69         NORMAL_FLUSH = 0,
 70         SYNC_FLUSH,
 71         SHUTDOWN_FLUSH,
 72         FREEZE_FLUSH
 73 };
 74 extern void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl,
 75                            enum gfs2_flush_type type);
 76 extern void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans);
 77 extern void gfs2_remove_from_ail(struct gfs2_bufdata *bd);
 78 extern void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc);
 79 
 80 extern void gfs2_log_shutdown(struct gfs2_sbd *sdp);
 81 extern int gfs2_logd(void *data);
 82 extern void gfs2_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd);
 83 extern void gfs2_write_revokes(struct gfs2_sbd *sdp);
 84 
 85 #endif /* __LOG_DOT_H__ */
 86 

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