diff options
Diffstat (limited to 'fs/gfs2/log.h')
-rw-r--r-- | fs/gfs2/log.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/fs/gfs2/log.h b/fs/gfs2/log.h new file mode 100644 index 000000000..015766cd1 --- /dev/null +++ b/fs/gfs2/log.h @@ -0,0 +1,86 @@ +/* + * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. + * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. + * + * This copyrighted material is made available to anyone wishing to use, + * modify, copy, or redistribute it subject to the terms and conditions + * of the GNU General Public License version 2. + */ + +#ifndef __LOG_DOT_H__ +#define __LOG_DOT_H__ + +#include <linux/list.h> +#include <linux/spinlock.h> +#include <linux/writeback.h> +#include "incore.h" +#include "inode.h" + +/** + * gfs2_log_lock - acquire the right to mess with the log manager + * @sdp: the filesystem + * + */ + +static inline void gfs2_log_lock(struct gfs2_sbd *sdp) +__acquires(&sdp->sd_log_lock) +{ + spin_lock(&sdp->sd_log_lock); +} + +/** + * gfs2_log_unlock - release the right to mess with the log manager + * @sdp: the filesystem + * + */ + +static inline void gfs2_log_unlock(struct gfs2_sbd *sdp) +__releases(&sdp->sd_log_lock) +{ + spin_unlock(&sdp->sd_log_lock); +} + +static inline void gfs2_log_pointers_init(struct gfs2_sbd *sdp, + unsigned int value) +{ + if (++value == sdp->sd_jdesc->jd_blocks) { + value = 0; + } + sdp->sd_log_head = sdp->sd_log_tail = value; +} + +static inline void gfs2_ordered_add_inode(struct gfs2_inode *ip) +{ + struct gfs2_sbd *sdp; + + if (!gfs2_is_ordered(ip)) + return; + + sdp = GFS2_SB(&ip->i_inode); + if (!test_bit(GIF_ORDERED, &ip->i_flags)) { + spin_lock(&sdp->sd_ordered_lock); + if (!test_and_set_bit(GIF_ORDERED, &ip->i_flags)) + list_add(&ip->i_ordered, &sdp->sd_log_le_ordered); + spin_unlock(&sdp->sd_ordered_lock); + } +} +extern void gfs2_ordered_del_inode(struct gfs2_inode *ip); +extern unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct, + unsigned int ssize); + +extern void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks); +extern int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks); +extern void gfs2_write_log_header(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd, + u64 seq, u32 tail, u32 flags, int op_flags); +extern void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl, + u32 type); +extern void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans); +extern void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc); + +extern void gfs2_log_shutdown(struct gfs2_sbd *sdp); +extern int gfs2_logd(void *data); +extern void gfs2_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd); +extern void gfs2_glock_remove_revoke(struct gfs2_glock *gl); +extern void gfs2_write_revokes(struct gfs2_sbd *sdp); + +#endif /* __LOG_DOT_H__ */ |