| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [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 | #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; |
| 55 | |
| 56 | if (!gfs2_is_ordered(ip)) |
| 57 | return; |
| 58 | |
| 59 | sdp = GFS2_SB(&ip->i_inode); |
| 60 | if (!test_bit(GIF_ORDERED, &ip->i_flags)) { |
| 61 | spin_lock(&sdp->sd_ordered_lock); |
| 62 | if (!test_and_set_bit(GIF_ORDERED, &ip->i_flags)) |
| 63 | list_add(&ip->i_ordered, &sdp->sd_log_le_ordered); |
| 64 | spin_unlock(&sdp->sd_ordered_lock); |
| 65 | } |
| 66 | } |
| 67 | extern void gfs2_ordered_del_inode(struct gfs2_inode *ip); |
| 68 | extern unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct, |
| 69 | unsigned int ssize); |
| 70 | |
| 71 | extern void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks); |
| 72 | extern int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks); |
| 73 | extern void gfs2_write_log_header(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd, |
| 74 | u64 seq, u32 tail, u32 flags, int op_flags); |
| 75 | extern void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl, |
| 76 | u32 type); |
| 77 | extern void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans); |
| 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__ */ |