617 lines
15 KiB
C
617 lines
15 KiB
C
/*
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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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* 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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#define DIO_WAIT 0x00000010
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#define DIO_METADATA 0x00000020
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#define DIO_ALL 0x00000100
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struct gfs2_log_operations;
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struct gfs2_log_element;
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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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typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret);
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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_log_element *le);
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void (*lo_incore_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
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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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struct gfs2_log_element {
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struct list_head le_list;
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const struct gfs2_log_operations *le_ops;
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};
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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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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 list_head rd_list; /* Link with superblock */
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struct list_head rd_list_mru;
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struct list_head rd_recent; /* Recently used rgrps */
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struct gfs2_glock *rd_gl; /* Glock for this rgrp */
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struct gfs2_rindex_host rd_ri;
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struct gfs2_rgrp_host rd_rg;
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u64 rd_rg_vn;
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struct gfs2_bitmap *rd_bits;
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unsigned int rd_bh_count;
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struct mutex rd_mutex;
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u32 rd_free_clone;
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struct gfs2_log_element rd_le;
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u32 rd_last_alloc_data;
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u32 rd_last_alloc_meta;
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struct gfs2_sbd *rd_sbd;
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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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};
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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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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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struct list_head bd_list_tr;
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struct gfs2_log_element bd_le;
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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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struct gfs2_glock_operations {
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void (*go_xmote_th) (struct gfs2_glock *gl);
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void (*go_xmote_bh) (struct gfs2_glock *gl);
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void (*go_drop_th) (struct gfs2_glock *gl);
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void (*go_inval) (struct gfs2_glock *gl, int flags);
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int (*go_demote_ok) (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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const int go_type;
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};
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enum {
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/* Actions */
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HIF_MUTEX = 0,
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HIF_PROMOTE = 1,
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/* States */
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HIF_HOLDER = 6,
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HIF_FIRST = 7,
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HIF_ABORTED = 9,
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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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pid_t 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;
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unsigned long gh_ip;
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};
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enum {
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GLF_LOCK = 1,
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GLF_STICKY = 2,
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GLF_DEMOTE = 3,
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GLF_DIRTY = 5,
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};
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struct gfs2_glock {
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struct hlist_node gl_list;
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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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unsigned int gl_state;
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unsigned int gl_hash;
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unsigned int gl_demote_state; /* state requested by remote node */
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unsigned long gl_demote_time; /* time of first demote request */
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pid_t gl_owner_pid;
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unsigned long gl_ip;
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struct list_head gl_holders;
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struct list_head gl_waiters1; /* HIF_MUTEX */
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struct list_head gl_waiters3; /* HIF_PROMOTE */
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const struct gfs2_glock_operations *gl_ops;
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struct gfs2_holder *gl_req_gh;
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gfs2_glop_bh_t gl_req_bh;
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void *gl_lock;
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char *gl_lvb;
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atomic_t gl_lvb_count;
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u64 gl_vn;
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unsigned long gl_stamp;
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void *gl_object;
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struct list_head gl_reclaim;
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struct gfs2_sbd *gl_sbd;
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struct inode *gl_aspace;
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struct gfs2_log_element gl_le;
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struct list_head gl_ail_list;
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atomic_t gl_ail_count;
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};
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struct gfs2_alloc {
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/* Quota stuff */
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struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
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struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
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unsigned int al_qd_num;
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u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
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u32 al_alloced; /* Filled in by gfs2_alloc_*() */
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/* Filled in by gfs2_inplace_reserve() */
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unsigned int al_line;
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char *al_file;
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struct gfs2_holder al_ri_gh;
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struct gfs2_holder al_rgd_gh;
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struct gfs2_rgrpd *al_rgd;
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};
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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_PAGED = 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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struct gfs2_inum_host i_num;
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unsigned long i_flags; /* GIF_... */
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struct gfs2_dinode_host i_di; /* To be replaced by ref to block */
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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_alloc i_alloc;
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u64 i_last_rg_alloc;
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spinlock_t i_spin;
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struct rw_semaphore i_rw_mutex;
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unsigned long i_last_pfault;
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struct buffer_head *i_cache[GFS2_MAX_META_HEIGHT];
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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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/* To be removed? */
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static inline struct gfs2_sbd *GFS2_SB(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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enum {
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GFF_DID_DIRECT_ALLOC = 0,
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GFF_EXLOCK = 1,
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};
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struct gfs2_file {
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unsigned long f_flags; /* GFF_... */
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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 {
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struct gfs2_log_element rv_le;
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u64 rv_blkno;
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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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};
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struct gfs2_quota_lvb {
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__be32 qb_magic;
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u32 __pad;
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__be64 qb_limit; /* Hard limit of # blocks to alloc */
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__be64 qb_warn; /* Warn user when alloc is above this # */
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__be64 qb_value; /* Current # blocks allocated */
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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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unsigned int 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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unsigned long qd_last_touched;
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};
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struct gfs2_log_buf {
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struct list_head lb_list;
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struct buffer_head *lb_bh;
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struct buffer_head *lb_real;
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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;
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unsigned int tr_num_buf_new;
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unsigned int tr_num_buf_rm;
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struct list_head tr_list_buf;
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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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u64 ai_sync_gen;
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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 inode *jd_inode;
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unsigned int jd_jid;
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int jd_dirty;
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unsigned int jd_blocks;
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};
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#define GFS2_GLOCKD_DEFAULT 1
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#define GFS2_GLOCKD_MAX 16
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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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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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int ar_spectator; /* Don't get a journal because we're always RO */
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int ar_ignore_local_fs; /* Don't optimize even if local_fs is 1 */
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int ar_localflocks; /* Let the VFS do flock|fcntl locks for us */
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int ar_localcaching; /* Local-style caching (dangerous on multihost) */
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int ar_debug; /* Oops on errors instead of trying to be graceful */
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int ar_upgrade; /* Upgrade ondisk/multihost format */
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unsigned int ar_num_glockd; /* Number of glockd threads */
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int ar_posix_acl; /* Enable posix acls */
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int ar_quota; /* off/account/on */
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int ar_suiddir; /* suiddir support */
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int ar_data; /* ordered/writeback */
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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_ilimit;
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unsigned int gt_ilimit_tries;
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unsigned int gt_ilimit_min;
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unsigned int gt_demote_secs; /* Cache retention for unheld glock */
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unsigned int gt_incore_log_blocks;
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unsigned int gt_log_flush_secs;
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unsigned int gt_jindex_refresh_secs; /* Check for new journal index */
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unsigned int gt_scand_secs;
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unsigned int gt_recoverd_secs;
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unsigned int gt_logd_secs;
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unsigned int gt_quotad_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_cache_secs;
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unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
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unsigned int gt_atime_quantum; /* Min secs between atime updates */
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unsigned int gt_new_files_jdata;
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unsigned int gt_new_files_directio;
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unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
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unsigned int gt_lockdump_size;
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unsigned int gt_stall_secs; /* Detects trouble! */
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unsigned int gt_complain_secs;
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unsigned int gt_reclaim_limit; /* Max num of glocks in reclaim list */
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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_NOATIME = 3,
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};
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#define GFS2_FSNAME_LEN 256
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struct gfs2_sbd {
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struct super_block *sd_vfs;
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struct super_block *sd_vfs_meta;
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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_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];
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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];
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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 list_head sd_reclaim_list;
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spinlock_t sd_reclaim_lock;
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wait_queue_head_t sd_reclaim_wq;
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atomic_t sd_reclaim_count;
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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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/* Inode Stuff */
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struct inode *sd_master_dir;
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struct inode *sd_jindex;
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struct inode *sd_inum_inode;
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struct inode *sd_statfs_inode;
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struct inode *sd_ir_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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/* Inum stuff */
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struct mutex sd_inum_mutex;
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/* StatFS stuff */
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spinlock_t sd_statfs_spin;
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struct mutex sd_statfs_mutex;
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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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unsigned long sd_statfs_sync_time;
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/* Resource group stuff */
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u64 sd_rindex_vn;
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spinlock_t sd_rindex_spin;
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struct mutex sd_rindex_mutex;
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struct list_head sd_rindex_list;
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struct list_head sd_rindex_mru_list;
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struct list_head sd_rindex_recent_list;
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struct gfs2_rgrpd *sd_rindex_forward;
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unsigned int sd_rgrps;
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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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unsigned long sd_jindex_refresh_time;
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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_ir_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_scand_process;
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struct task_struct *sd_recoverd_process;
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struct task_struct *sd_logd_process;
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struct task_struct *sd_quotad_process;
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struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
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unsigned int sd_glockd_num;
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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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spinlock_t sd_quota_spin;
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struct mutex sd_quota_mutex;
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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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unsigned long sd_quota_sync_time;
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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_revoke;
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unsigned int sd_log_num_gl;
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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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unsigned int sd_log_num_jdata;
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unsigned int sd_log_num_hdrs;
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|
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struct list_head sd_log_le_gl;
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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_rg;
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struct list_head sd_log_le_databuf;
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|
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unsigned int sd_log_blks_free;
|
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struct mutex sd_log_reserve_mutex;
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|
|
u64 sd_log_sequence;
|
|
unsigned int sd_log_head;
|
|
unsigned int sd_log_tail;
|
|
int sd_log_idle;
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|
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unsigned long sd_log_flush_time;
|
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struct rw_semaphore sd_log_flush_lock;
|
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struct list_head sd_log_flush_list;
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|
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unsigned int sd_log_flush_head;
|
|
u64 sd_log_flush_wrapped;
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|
|
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struct list_head sd_ail1_list;
|
|
struct list_head sd_ail2_list;
|
|
u64 sd_ail_sync_gen;
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|
|
|
/* Replay stuff */
|
|
|
|
struct list_head sd_revoke_list;
|
|
unsigned int sd_replay_tail;
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|
|
|
unsigned int sd_found_blocks;
|
|
unsigned int sd_found_revokes;
|
|
unsigned int sd_replayed_blocks;
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|
|
|
/* For quiescing the filesystem */
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|
|
|
struct gfs2_holder sd_freeze_gh;
|
|
struct mutex sd_freeze_lock;
|
|
unsigned int sd_freeze_count;
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|
|
|
/* Counters */
|
|
|
|
atomic_t sd_glock_count;
|
|
atomic_t sd_glock_held_count;
|
|
atomic_t sd_inode_count;
|
|
atomic_t sd_reclaimed;
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|
|
|
char sd_fsname[GFS2_FSNAME_LEN];
|
|
char sd_table_name[GFS2_FSNAME_LEN];
|
|
char sd_proto_name[GFS2_FSNAME_LEN];
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|
|
|
/* Debugging crud */
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|
|
|
unsigned long sd_last_warning;
|
|
struct vfsmount *sd_gfs2mnt;
|
|
struct dentry *debugfs_dentry; /* for debugfs */
|
|
};
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#endif /* __INCORE_DOT_H__ */
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