| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 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_glock_remove_revoke(struct gfs2_glock *gl); |
| 84 | extern void gfs2_write_revokes(struct gfs2_sbd *sdp); |
| 85 | |
| 86 | #endif /* __LOG_DOT_H__ */ |