794 lines
21 KiB
C
794 lines
21 KiB
C
/*
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* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
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* Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU General Public License version 2.
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*/
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#ifndef __INCORE_DOT_H__
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#define __INCORE_DOT_H__
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#include <linux/fs.h>
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#include <linux/kobject.h>
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#include <linux/workqueue.h>
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#include <linux/dlm.h>
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#include <linux/buffer_head.h>
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#include <linux/rcupdate.h>
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#include <linux/rculist_bl.h>
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#include <linux/completion.h>
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#include <linux/rbtree.h>
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#include <linux/ktime.h>
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#include <linux/percpu.h>
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#define DIO_WAIT 0x00000010
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#define DIO_METADATA 0x00000020
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struct gfs2_log_operations;
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struct gfs2_bufdata;
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struct gfs2_holder;
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struct gfs2_glock;
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struct gfs2_quota_data;
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struct gfs2_trans;
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struct gfs2_ail;
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struct gfs2_jdesc;
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struct gfs2_sbd;
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struct lm_lockops;
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typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret);
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struct gfs2_log_header_host {
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u64 lh_sequence; /* Sequence number of this transaction */
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u32 lh_flags; /* GFS2_LOG_HEAD_... */
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u32 lh_tail; /* Block number of log tail */
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u32 lh_blkno;
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u32 lh_hash;
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};
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/*
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* Structure of operations that are associated with each
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* type of element in the log.
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*/
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struct gfs2_log_operations {
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void (*lo_add) (struct gfs2_sbd *sdp, struct gfs2_bufdata *bd);
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void (*lo_before_commit) (struct gfs2_sbd *sdp);
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void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_ail *ai);
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void (*lo_before_scan) (struct gfs2_jdesc *jd,
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struct gfs2_log_header_host *head, int pass);
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int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start,
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struct gfs2_log_descriptor *ld, __be64 *ptr,
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int pass);
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void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass);
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const char *lo_name;
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};
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#define GBF_FULL 1
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struct gfs2_bitmap {
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struct buffer_head *bi_bh;
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char *bi_clone;
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unsigned long bi_flags;
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u32 bi_offset;
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u32 bi_start;
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u32 bi_len;
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};
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struct gfs2_rgrpd {
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struct rb_node rd_node; /* Link with superblock */
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struct gfs2_glock *rd_gl; /* Glock for this rgrp */
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u64 rd_addr; /* grp block disk address */
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u64 rd_data0; /* first data location */
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u32 rd_length; /* length of rgrp header in fs blocks */
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u32 rd_data; /* num of data blocks in rgrp */
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u32 rd_bitbytes; /* number of bytes in data bitmaps */
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u32 rd_free;
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u32 rd_reserved; /* number of blocks reserved */
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u32 rd_free_clone;
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u32 rd_dinodes;
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u64 rd_igeneration;
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struct gfs2_bitmap *rd_bits;
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struct gfs2_sbd *rd_sbd;
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struct gfs2_rgrp_lvb *rd_rgl;
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u32 rd_last_alloc;
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u32 rd_flags;
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#define GFS2_RDF_CHECK 0x10000000 /* check for unlinked inodes */
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#define GFS2_RDF_UPTODATE 0x20000000 /* rg is up to date */
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#define GFS2_RDF_ERROR 0x40000000 /* error in rg */
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#define GFS2_RDF_MASK 0xf0000000 /* mask for internal flags */
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spinlock_t rd_rsspin; /* protects reservation related vars */
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struct rb_root rd_rstree; /* multi-block reservation tree */
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};
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struct gfs2_rbm {
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struct gfs2_rgrpd *rgd;
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struct gfs2_bitmap *bi; /* Bitmap must belong to the rgd */
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u32 offset; /* The offset is bitmap relative */
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};
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static inline u64 gfs2_rbm_to_block(const struct gfs2_rbm *rbm)
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{
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return rbm->rgd->rd_data0 + (rbm->bi->bi_start * GFS2_NBBY) + rbm->offset;
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}
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static inline bool gfs2_rbm_eq(const struct gfs2_rbm *rbm1,
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const struct gfs2_rbm *rbm2)
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{
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return (rbm1->rgd == rbm2->rgd) && (rbm1->bi == rbm2->bi) &&
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(rbm1->offset == rbm2->offset);
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}
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enum gfs2_state_bits {
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BH_Pinned = BH_PrivateStart,
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BH_Escaped = BH_PrivateStart + 1,
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BH_Zeronew = BH_PrivateStart + 2,
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};
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BUFFER_FNS(Pinned, pinned)
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TAS_BUFFER_FNS(Pinned, pinned)
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BUFFER_FNS(Escaped, escaped)
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TAS_BUFFER_FNS(Escaped, escaped)
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BUFFER_FNS(Zeronew, zeronew)
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TAS_BUFFER_FNS(Zeronew, zeronew)
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struct gfs2_bufdata {
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struct buffer_head *bd_bh;
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struct gfs2_glock *bd_gl;
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u64 bd_blkno;
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struct list_head bd_list;
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const struct gfs2_log_operations *bd_ops;
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struct gfs2_ail *bd_ail;
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struct list_head bd_ail_st_list;
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struct list_head bd_ail_gl_list;
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};
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/*
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* Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a
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* prefix of lock_dlm_ gets awkward.
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*/
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#define GDLM_STRNAME_BYTES 25
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#define GDLM_LVB_SIZE 32
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/*
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* ls_recover_flags:
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*
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* DFL_BLOCK_LOCKS: dlm is in recovery and will grant locks that had been
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* held by failed nodes whose journals need recovery. Those locks should
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* only be used for journal recovery until the journal recovery is done.
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* This is set by the dlm recover_prep callback and cleared by the
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* gfs2_control thread when journal recovery is complete. To avoid
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* races between recover_prep setting and gfs2_control clearing, recover_spin
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* is held while changing this bit and reading/writing recover_block
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* and recover_start.
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*
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* DFL_NO_DLM_OPS: dlm lockspace ops/callbacks are not being used.
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*
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* DFL_FIRST_MOUNT: this node is the first to mount this fs and is doing
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* recovery of all journals before allowing other nodes to mount the fs.
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* This is cleared when FIRST_MOUNT_DONE is set.
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*
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* DFL_FIRST_MOUNT_DONE: this node was the first mounter, and has finished
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* recovery of all journals, and now allows other nodes to mount the fs.
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*
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* DFL_MOUNT_DONE: gdlm_mount has completed successfully and cleared
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* BLOCK_LOCKS for the first time. The gfs2_control thread should now
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* control clearing BLOCK_LOCKS for further recoveries.
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*
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* DFL_UNMOUNT: gdlm_unmount sets to keep sdp off gfs2_control_wq.
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*
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* DFL_DLM_RECOVERY: set while dlm is in recovery, between recover_prep()
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* and recover_done(), i.e. set while recover_block == recover_start.
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*/
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enum {
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DFL_BLOCK_LOCKS = 0,
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DFL_NO_DLM_OPS = 1,
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DFL_FIRST_MOUNT = 2,
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DFL_FIRST_MOUNT_DONE = 3,
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DFL_MOUNT_DONE = 4,
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DFL_UNMOUNT = 5,
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DFL_DLM_RECOVERY = 6,
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};
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struct lm_lockname {
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u64 ln_number;
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unsigned int ln_type;
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};
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#define lm_name_equal(name1, name2) \
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(((name1)->ln_number == (name2)->ln_number) && \
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((name1)->ln_type == (name2)->ln_type))
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struct gfs2_glock_operations {
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void (*go_sync) (struct gfs2_glock *gl);
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int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh);
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void (*go_inval) (struct gfs2_glock *gl, int flags);
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int (*go_demote_ok) (const struct gfs2_glock *gl);
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int (*go_lock) (struct gfs2_holder *gh);
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void (*go_unlock) (struct gfs2_holder *gh);
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int (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl);
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void (*go_callback) (struct gfs2_glock *gl);
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const int go_type;
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const unsigned long go_flags;
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#define GLOF_ASPACE 1
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#define GLOF_LVB 2
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};
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enum {
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GFS2_LKS_SRTT = 0, /* Non blocking smoothed round trip time */
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GFS2_LKS_SRTTVAR = 1, /* Non blocking smoothed variance */
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GFS2_LKS_SRTTB = 2, /* Blocking smoothed round trip time */
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GFS2_LKS_SRTTVARB = 3, /* Blocking smoothed variance */
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GFS2_LKS_SIRT = 4, /* Smoothed Inter-request time */
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GFS2_LKS_SIRTVAR = 5, /* Smoothed Inter-request variance */
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GFS2_LKS_DCOUNT = 6, /* Count of dlm requests */
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GFS2_LKS_QCOUNT = 7, /* Count of gfs2_holder queues */
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GFS2_NR_LKSTATS
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};
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struct gfs2_lkstats {
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s64 stats[GFS2_NR_LKSTATS];
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};
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enum {
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/* States */
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HIF_HOLDER = 6, /* Set for gh that "holds" the glock */
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HIF_FIRST = 7,
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HIF_WAIT = 10,
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};
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struct gfs2_holder {
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struct list_head gh_list;
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struct gfs2_glock *gh_gl;
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struct pid *gh_owner_pid;
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unsigned int gh_state;
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unsigned gh_flags;
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int gh_error;
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unsigned long gh_iflags; /* HIF_... */
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unsigned long gh_ip;
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};
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/* Resource group multi-block reservation, in order of appearance:
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Step 1. Function prepares to write, allocates a mb, sets the size hint.
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Step 2. User calls inplace_reserve to target an rgrp, sets the rgrp info
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Step 3. Function get_local_rgrp locks the rgrp, determines which bits to use
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Step 4. Bits are assigned from the rgrp based on either the reservation
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or wherever it can.
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*/
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struct gfs2_blkreserv {
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/* components used during write (step 1): */
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atomic_t rs_sizehint; /* hint of the write size */
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struct gfs2_holder rs_rgd_gh; /* Filled in by get_local_rgrp */
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struct rb_node rs_node; /* link to other block reservations */
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struct gfs2_rbm rs_rbm; /* Start of reservation */
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u32 rs_free; /* how many blocks are still free */
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u64 rs_inum; /* Inode number for reservation */
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/* ancillary quota stuff */
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struct gfs2_quota_data *rs_qa_qd[2 * MAXQUOTAS];
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struct gfs2_holder rs_qa_qd_ghs[2 * MAXQUOTAS];
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unsigned int rs_qa_qd_num;
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};
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enum {
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GLF_LOCK = 1,
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GLF_DEMOTE = 3,
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GLF_PENDING_DEMOTE = 4,
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GLF_DEMOTE_IN_PROGRESS = 5,
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GLF_DIRTY = 6,
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GLF_LFLUSH = 7,
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GLF_INVALIDATE_IN_PROGRESS = 8,
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GLF_REPLY_PENDING = 9,
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GLF_INITIAL = 10,
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GLF_FROZEN = 11,
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GLF_QUEUED = 12,
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GLF_LRU = 13,
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GLF_OBJECT = 14, /* Used only for tracing */
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GLF_BLOCKING = 15,
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};
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struct gfs2_glock {
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struct hlist_bl_node gl_list;
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struct gfs2_sbd *gl_sbd;
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unsigned long gl_flags; /* GLF_... */
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struct lm_lockname gl_name;
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atomic_t gl_ref;
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spinlock_t gl_spin;
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/* State fields protected by gl_spin */
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unsigned int gl_state:2, /* Current state */
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gl_target:2, /* Target state */
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gl_demote_state:2, /* State requested by remote node */
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gl_req:2, /* State in last dlm request */
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gl_reply:8; /* Last reply from the dlm */
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unsigned int gl_hash;
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unsigned long gl_demote_time; /* time of first demote request */
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long gl_hold_time;
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struct list_head gl_holders;
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const struct gfs2_glock_operations *gl_ops;
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ktime_t gl_dstamp;
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struct gfs2_lkstats gl_stats;
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struct dlm_lksb gl_lksb;
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unsigned long gl_tchange;
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void *gl_object;
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struct list_head gl_lru;
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struct list_head gl_ail_list;
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atomic_t gl_ail_count;
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atomic_t gl_revokes;
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struct delayed_work gl_work;
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struct work_struct gl_delete;
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struct rcu_head gl_rcu;
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};
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#define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */
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enum {
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GIF_INVALID = 0,
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GIF_QD_LOCKED = 1,
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GIF_ALLOC_FAILED = 2,
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GIF_SW_PAGED = 3,
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};
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struct gfs2_inode {
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struct inode i_inode;
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u64 i_no_addr;
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u64 i_no_formal_ino;
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u64 i_generation;
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u64 i_eattr;
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unsigned long i_flags; /* GIF_... */
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struct gfs2_glock *i_gl; /* Move into i_gh? */
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struct gfs2_holder i_iopen_gh;
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struct gfs2_holder i_gh; /* for prepare/commit_write only */
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struct gfs2_blkreserv *i_res; /* rgrp multi-block reservation */
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struct gfs2_rgrpd *i_rgd;
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u64 i_goal; /* goal block for allocations */
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struct rw_semaphore i_rw_mutex;
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struct list_head i_trunc_list;
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__be64 *i_hash_cache;
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u32 i_entries;
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u32 i_diskflags;
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u8 i_height;
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u8 i_depth;
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};
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/*
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* Since i_inode is the first element of struct gfs2_inode,
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* this is effectively a cast.
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*/
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static inline struct gfs2_inode *GFS2_I(struct inode *inode)
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{
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return container_of(inode, struct gfs2_inode, i_inode);
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}
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static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode)
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{
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return inode->i_sb->s_fs_info;
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}
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struct gfs2_file {
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struct mutex f_fl_mutex;
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struct gfs2_holder f_fl_gh;
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};
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struct gfs2_revoke_replay {
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struct list_head rr_list;
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u64 rr_blkno;
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unsigned int rr_where;
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};
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enum {
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QDF_USER = 0,
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QDF_CHANGE = 1,
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QDF_LOCKED = 2,
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QDF_REFRESH = 3,
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};
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struct gfs2_quota_data {
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struct list_head qd_list;
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struct list_head qd_reclaim;
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atomic_t qd_count;
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u32 qd_id;
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unsigned long qd_flags; /* QDF_... */
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s64 qd_change;
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s64 qd_change_sync;
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unsigned int qd_slot;
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unsigned int qd_slot_count;
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struct buffer_head *qd_bh;
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struct gfs2_quota_change *qd_bh_qc;
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unsigned int qd_bh_count;
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struct gfs2_glock *qd_gl;
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struct gfs2_quota_lvb qd_qb;
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u64 qd_sync_gen;
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unsigned long qd_last_warn;
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};
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struct gfs2_trans {
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unsigned long tr_ip;
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unsigned int tr_blocks;
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unsigned int tr_revokes;
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unsigned int tr_reserved;
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struct gfs2_holder tr_t_gh;
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int tr_touched;
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unsigned int tr_num_buf_new;
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unsigned int tr_num_databuf_new;
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unsigned int tr_num_buf_rm;
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unsigned int tr_num_databuf_rm;
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unsigned int tr_num_revoke;
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unsigned int tr_num_revoke_rm;
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};
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struct gfs2_ail {
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struct list_head ai_list;
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unsigned int ai_first;
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struct list_head ai_ail1_list;
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struct list_head ai_ail2_list;
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};
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struct gfs2_journal_extent {
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struct list_head extent_list;
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unsigned int lblock; /* First logical block */
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u64 dblock; /* First disk block */
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u64 blocks;
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};
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struct gfs2_jdesc {
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struct list_head jd_list;
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struct list_head extent_list;
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struct work_struct jd_work;
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struct inode *jd_inode;
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unsigned long jd_flags;
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#define JDF_RECOVERY 1
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unsigned int jd_jid;
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unsigned int jd_blocks;
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int jd_recover_error;
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};
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struct gfs2_statfs_change_host {
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s64 sc_total;
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s64 sc_free;
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s64 sc_dinodes;
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};
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#define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
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#define GFS2_QUOTA_OFF 0
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#define GFS2_QUOTA_ACCOUNT 1
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#define GFS2_QUOTA_ON 2
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#define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
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#define GFS2_DATA_WRITEBACK 1
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#define GFS2_DATA_ORDERED 2
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#define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW
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#define GFS2_ERRORS_WITHDRAW 0
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#define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */
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#define GFS2_ERRORS_RO 2 /* place holder for future feature */
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#define GFS2_ERRORS_PANIC 3
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struct gfs2_args {
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char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
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char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
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char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
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unsigned int ar_spectator:1; /* Don't get a journal */
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unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */
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unsigned int ar_debug:1; /* Oops on errors */
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unsigned int ar_posix_acl:1; /* Enable posix acls */
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unsigned int ar_quota:2; /* off/account/on */
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unsigned int ar_suiddir:1; /* suiddir support */
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unsigned int ar_data:2; /* ordered/writeback */
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unsigned int ar_meta:1; /* mount metafs */
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unsigned int ar_discard:1; /* discard requests */
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unsigned int ar_errors:2; /* errors=withdraw | panic */
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unsigned int ar_nobarrier:1; /* do not send barriers */
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unsigned int ar_rgrplvb:1; /* use lvbs for rgrp info */
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int ar_commit; /* Commit interval */
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int ar_statfs_quantum; /* The fast statfs interval */
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int ar_quota_quantum; /* The quota interval */
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int ar_statfs_percent; /* The % change to force sync */
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};
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struct gfs2_tune {
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spinlock_t gt_spin;
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unsigned int gt_logd_secs;
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unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
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unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
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unsigned int gt_quota_scale_num; /* Numerator */
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unsigned int gt_quota_scale_den; /* Denominator */
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unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
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unsigned int gt_new_files_jdata;
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unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
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unsigned int gt_complain_secs;
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unsigned int gt_statfs_quantum;
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unsigned int gt_statfs_slow;
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};
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enum {
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SDF_JOURNAL_CHECKED = 0,
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SDF_JOURNAL_LIVE = 1,
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SDF_SHUTDOWN = 2,
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SDF_NOBARRIERS = 3,
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SDF_NORECOVERY = 4,
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SDF_DEMOTE = 5,
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SDF_NOJOURNALID = 6,
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SDF_RORECOVERY = 7, /* read only recovery */
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SDF_SKIP_DLM_UNLOCK = 8,
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};
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#define GFS2_FSNAME_LEN 256
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struct gfs2_inum_host {
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u64 no_formal_ino;
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u64 no_addr;
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};
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struct gfs2_sb_host {
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u32 sb_magic;
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u32 sb_type;
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u32 sb_format;
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u32 sb_fs_format;
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u32 sb_multihost_format;
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u32 sb_bsize;
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u32 sb_bsize_shift;
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struct gfs2_inum_host sb_master_dir;
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struct gfs2_inum_host sb_root_dir;
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char sb_lockproto[GFS2_LOCKNAME_LEN];
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char sb_locktable[GFS2_LOCKNAME_LEN];
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};
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/*
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* lm_mount() return values
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*
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* ls_jid - the journal ID this node should use
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* ls_first - this node is the first to mount the file system
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* ls_lockspace - lock module's context for this file system
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* ls_ops - lock module's functions
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*/
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struct lm_lockstruct {
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int ls_jid;
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unsigned int ls_first;
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const struct lm_lockops *ls_ops;
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dlm_lockspace_t *ls_dlm;
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int ls_recover_jid_done; /* These two are deprecated, */
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int ls_recover_jid_status; /* used previously by gfs_controld */
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struct dlm_lksb ls_mounted_lksb; /* mounted_lock */
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struct dlm_lksb ls_control_lksb; /* control_lock */
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char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */
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struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */
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spinlock_t ls_recover_spin; /* protects following fields */
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unsigned long ls_recover_flags; /* DFL_ */
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uint32_t ls_recover_mount; /* gen in first recover_done cb */
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uint32_t ls_recover_start; /* gen in last recover_done cb */
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uint32_t ls_recover_block; /* copy recover_start in last recover_prep */
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uint32_t ls_recover_size; /* size of recover_submit, recover_result */
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uint32_t *ls_recover_submit; /* gen in last recover_slot cb per jid */
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uint32_t *ls_recover_result; /* result of last jid recovery */
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};
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struct gfs2_pcpu_lkstats {
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/* One struct for each glock type */
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struct gfs2_lkstats lkstats[10];
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};
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struct gfs2_sbd {
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struct super_block *sd_vfs;
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struct gfs2_pcpu_lkstats __percpu *sd_lkstats;
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struct kobject sd_kobj;
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unsigned long sd_flags; /* SDF_... */
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struct gfs2_sb_host sd_sb;
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/* Constants computed on mount */
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u32 sd_fsb2bb;
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u32 sd_fsb2bb_shift;
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u32 sd_diptrs; /* Number of pointers in a dinode */
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u32 sd_inptrs; /* Number of pointers in a indirect block */
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u32 sd_jbsize; /* Size of a journaled data block */
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u32 sd_hash_bsize; /* sizeof(exhash block) */
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u32 sd_hash_bsize_shift;
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u32 sd_hash_ptrs; /* Number of pointers in a hash block */
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u32 sd_qc_per_block;
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u32 sd_blocks_per_bitmap;
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u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
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u32 sd_max_height; /* Max height of a file's metadata tree */
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u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1];
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u32 sd_max_jheight; /* Max height of journaled file's meta tree */
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u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1];
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struct gfs2_args sd_args; /* Mount arguments */
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struct gfs2_tune sd_tune; /* Filesystem tuning structure */
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/* Lock Stuff */
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struct lm_lockstruct sd_lockstruct;
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struct gfs2_holder sd_live_gh;
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struct gfs2_glock *sd_rename_gl;
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struct gfs2_glock *sd_trans_gl;
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wait_queue_head_t sd_glock_wait;
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atomic_t sd_glock_disposal;
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struct completion sd_locking_init;
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struct delayed_work sd_control_work;
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/* Inode Stuff */
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struct dentry *sd_master_dir;
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struct dentry *sd_root_dir;
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struct inode *sd_jindex;
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struct inode *sd_statfs_inode;
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struct inode *sd_sc_inode;
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struct inode *sd_qc_inode;
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struct inode *sd_rindex;
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struct inode *sd_quota_inode;
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/* StatFS stuff */
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spinlock_t sd_statfs_spin;
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struct gfs2_statfs_change_host sd_statfs_master;
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struct gfs2_statfs_change_host sd_statfs_local;
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int sd_statfs_force_sync;
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/* Resource group stuff */
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int sd_rindex_uptodate;
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spinlock_t sd_rindex_spin;
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struct rb_root sd_rindex_tree;
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unsigned int sd_rgrps;
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unsigned int sd_max_rg_data;
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/* Journal index stuff */
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struct list_head sd_jindex_list;
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spinlock_t sd_jindex_spin;
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struct mutex sd_jindex_mutex;
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unsigned int sd_journals;
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struct gfs2_jdesc *sd_jdesc;
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struct gfs2_holder sd_journal_gh;
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struct gfs2_holder sd_jinode_gh;
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struct gfs2_holder sd_sc_gh;
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struct gfs2_holder sd_qc_gh;
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/* Daemon stuff */
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struct task_struct *sd_logd_process;
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struct task_struct *sd_quotad_process;
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/* Quota stuff */
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struct list_head sd_quota_list;
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atomic_t sd_quota_count;
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struct mutex sd_quota_mutex;
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wait_queue_head_t sd_quota_wait;
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struct list_head sd_trunc_list;
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spinlock_t sd_trunc_lock;
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unsigned int sd_quota_slots;
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unsigned int sd_quota_chunks;
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unsigned char **sd_quota_bitmap;
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u64 sd_quota_sync_gen;
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/* Log stuff */
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spinlock_t sd_log_lock;
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unsigned int sd_log_blks_reserved;
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unsigned int sd_log_commited_buf;
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unsigned int sd_log_commited_databuf;
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int sd_log_commited_revoke;
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atomic_t sd_log_pinned;
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unsigned int sd_log_num_buf;
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unsigned int sd_log_num_revoke;
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unsigned int sd_log_num_rg;
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unsigned int sd_log_num_databuf;
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struct list_head sd_log_le_buf;
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struct list_head sd_log_le_revoke;
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struct list_head sd_log_le_databuf;
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struct list_head sd_log_le_ordered;
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atomic_t sd_log_thresh1;
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atomic_t sd_log_thresh2;
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atomic_t sd_log_blks_free;
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wait_queue_head_t sd_log_waitq;
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wait_queue_head_t sd_logd_waitq;
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u64 sd_log_sequence;
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unsigned int sd_log_head;
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unsigned int sd_log_tail;
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int sd_log_idle;
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struct rw_semaphore sd_log_flush_lock;
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atomic_t sd_log_in_flight;
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struct bio *sd_log_bio;
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wait_queue_head_t sd_log_flush_wait;
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int sd_log_error;
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unsigned int sd_log_flush_head;
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u64 sd_log_flush_wrapped;
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spinlock_t sd_ail_lock;
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struct list_head sd_ail1_list;
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struct list_head sd_ail2_list;
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/* Replay stuff */
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struct list_head sd_revoke_list;
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unsigned int sd_replay_tail;
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unsigned int sd_found_blocks;
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unsigned int sd_found_revokes;
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unsigned int sd_replayed_blocks;
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/* For quiescing the filesystem */
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struct gfs2_holder sd_freeze_gh;
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struct mutex sd_freeze_lock;
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unsigned int sd_freeze_count;
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char sd_fsname[GFS2_FSNAME_LEN];
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char sd_table_name[GFS2_FSNAME_LEN];
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char sd_proto_name[GFS2_FSNAME_LEN];
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/* Debugging crud */
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unsigned long sd_last_warning;
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struct dentry *debugfs_dir; /* debugfs directory */
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struct dentry *debugfs_dentry_glocks;
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struct dentry *debugfs_dentry_glstats;
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struct dentry *debugfs_dentry_sbstats;
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};
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static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which)
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{
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gl->gl_stats.stats[which]++;
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}
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static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which)
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{
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const struct gfs2_sbd *sdp = gl->gl_sbd;
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preempt_disable();
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this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++;
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preempt_enable();
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}
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#endif /* __INCORE_DOT_H__ */
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