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97 lines
2.9 KiB
97 lines
2.9 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
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* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
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*/ |
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#ifndef __LOG_DOT_H__ |
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#define __LOG_DOT_H__ |
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#include <linux/list.h> |
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#include <linux/spinlock.h> |
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#include <linux/writeback.h> |
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#include "incore.h" |
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#include "inode.h" |
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/* |
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* The minimum amount of log space required for a log flush is one block for |
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* revokes and one block for the log header. Log flushes other than |
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* GFS2_LOG_HEAD_FLUSH_NORMAL may write one or two more log headers. |
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*/ |
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#define GFS2_LOG_FLUSH_MIN_BLOCKS 4 |
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/** |
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* gfs2_log_lock - acquire the right to mess with the log manager |
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* @sdp: the filesystem |
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* |
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*/ |
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static inline void gfs2_log_lock(struct gfs2_sbd *sdp) |
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__acquires(&sdp->sd_log_lock) |
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{ |
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spin_lock(&sdp->sd_log_lock); |
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} |
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/** |
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* gfs2_log_unlock - release the right to mess with the log manager |
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* @sdp: the filesystem |
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* |
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*/ |
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static inline void gfs2_log_unlock(struct gfs2_sbd *sdp) |
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__releases(&sdp->sd_log_lock) |
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{ |
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spin_unlock(&sdp->sd_log_lock); |
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} |
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static inline void gfs2_log_pointers_init(struct gfs2_sbd *sdp, |
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unsigned int value) |
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{ |
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if (++value == sdp->sd_jdesc->jd_blocks) { |
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value = 0; |
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} |
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sdp->sd_log_tail = value; |
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sdp->sd_log_flush_tail = value; |
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sdp->sd_log_head = value; |
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} |
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static inline void gfs2_ordered_add_inode(struct gfs2_inode *ip) |
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{ |
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struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
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if (gfs2_is_jdata(ip) || !gfs2_is_ordered(sdp)) |
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return; |
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if (list_empty(&ip->i_ordered)) { |
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spin_lock(&sdp->sd_ordered_lock); |
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if (list_empty(&ip->i_ordered)) |
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list_add(&ip->i_ordered, &sdp->sd_log_ordered); |
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spin_unlock(&sdp->sd_ordered_lock); |
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} |
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} |
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extern void gfs2_ordered_del_inode(struct gfs2_inode *ip); |
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extern unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct); |
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extern void gfs2_remove_from_ail(struct gfs2_bufdata *bd); |
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extern bool gfs2_log_is_empty(struct gfs2_sbd *sdp); |
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extern void gfs2_log_release_revokes(struct gfs2_sbd *sdp, unsigned int revokes); |
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extern void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks); |
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extern bool gfs2_log_try_reserve(struct gfs2_sbd *sdp, struct gfs2_trans *tr, |
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unsigned int *extra_revokes); |
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extern void gfs2_log_reserve(struct gfs2_sbd *sdp, struct gfs2_trans *tr, |
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unsigned int *extra_revokes); |
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extern void gfs2_write_log_header(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd, |
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u64 seq, u32 tail, u32 lblock, u32 flags, |
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int op_flags); |
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extern void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl, |
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u32 type); |
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extern void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans); |
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extern void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc); |
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extern void log_flush_wait(struct gfs2_sbd *sdp); |
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extern int gfs2_logd(void *data); |
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extern void gfs2_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd); |
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extern void gfs2_glock_remove_revoke(struct gfs2_glock *gl); |
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extern void gfs2_flush_revokes(struct gfs2_sbd *sdp); |
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#endif /* __LOG_DOT_H__ */
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