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git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - fs/gfs2/log.h
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
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 v.2.
14 * gfs2_log_lock - acquire the right to mess with the log manager
15 * @sdp: the filesystem
19 static inline void gfs2_log_lock(struct gfs2_sbd
*sdp
)
21 spin_lock(&sdp
->sd_log_lock
);
25 * gfs2_log_unlock - release the right to mess with the log manager
26 * @sdp: the filesystem
30 static inline void gfs2_log_unlock(struct gfs2_sbd
*sdp
)
32 spin_unlock(&sdp
->sd_log_lock
);
35 static inline void gfs2_log_pointers_init(struct gfs2_sbd
*sdp
,
38 if (++value
== sdp
->sd_jdesc
->jd_blocks
) {
42 sdp
->sd_log_head
= sdp
->sd_log_tail
= value
;
45 void gfs2_lock_for_flush(struct gfs2_sbd
*sdp
);
46 void gfs2_unlock_from_flush(struct gfs2_sbd
*sdp
);
48 unsigned int gfs2_struct2blk(struct gfs2_sbd
*sdp
, unsigned int nstruct
,
51 void gfs2_ail1_start(struct gfs2_sbd
*sdp
, int flags
);
52 int gfs2_ail1_empty(struct gfs2_sbd
*sdp
, int flags
);
54 int gfs2_log_reserve(struct gfs2_sbd
*sdp
, unsigned int blks
);
55 void gfs2_log_release(struct gfs2_sbd
*sdp
, unsigned int blks
);
57 struct buffer_head
*gfs2_log_get_buf(struct gfs2_sbd
*sdp
);
58 struct buffer_head
*gfs2_log_fake_buf(struct gfs2_sbd
*sdp
,
59 struct buffer_head
*real
);
61 #define gfs2_log_flush(sdp) gfs2_log_flush_i((sdp), NULL)
62 #define gfs2_log_flush_glock(gl) gfs2_log_flush_i((gl)->gl_sbd, (gl))
63 void gfs2_log_flush_i(struct gfs2_sbd
*sdp
, struct gfs2_glock
*gl
);
64 void gfs2_log_commit(struct gfs2_sbd
*sdp
, struct gfs2_trans
*trans
);
66 void gfs2_log_shutdown(struct gfs2_sbd
*sdp
);
68 #endif /* __LOG_DOT_H__ */