| /* |
| * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
| * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved. |
| * |
| * This copyrighted material is made available to anyone wishing to use, |
| * modify, copy, or redistribute it subject to the terms and conditions |
| * of the GNU General Public License version 2. |
| */ |
| |
| #ifndef __INCORE_DOT_H__ |
| #define __INCORE_DOT_H__ |
| |
| #include <linux/fs.h> |
| #include <linux/workqueue.h> |
| |
| #define DIO_WAIT 0x00000010 |
| #define DIO_METADATA 0x00000020 |
| #define DIO_ALL 0x00000100 |
| |
| struct gfs2_log_operations; |
| struct gfs2_log_element; |
| struct gfs2_holder; |
| struct gfs2_glock; |
| struct gfs2_quota_data; |
| struct gfs2_trans; |
| struct gfs2_ail; |
| struct gfs2_jdesc; |
| struct gfs2_sbd; |
| |
| typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret); |
| |
| struct gfs2_log_header_host { |
| u64 lh_sequence; /* Sequence number of this transaction */ |
| u32 lh_flags; /* GFS2_LOG_HEAD_... */ |
| u32 lh_tail; /* Block number of log tail */ |
| u32 lh_blkno; |
| u32 lh_hash; |
| }; |
| |
| /* |
| * Structure of operations that are associated with each |
| * type of element in the log. |
| */ |
| |
| struct gfs2_log_operations { |
| void (*lo_add) (struct gfs2_sbd *sdp, struct gfs2_log_element *le); |
| void (*lo_before_commit) (struct gfs2_sbd *sdp); |
| void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_ail *ai); |
| void (*lo_before_scan) (struct gfs2_jdesc *jd, |
| struct gfs2_log_header_host *head, int pass); |
| int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start, |
| struct gfs2_log_descriptor *ld, __be64 *ptr, |
| int pass); |
| void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass); |
| const char *lo_name; |
| }; |
| |
| struct gfs2_log_element { |
| struct list_head le_list; |
| const struct gfs2_log_operations *le_ops; |
| }; |
| |
| struct gfs2_bitmap { |
| struct buffer_head *bi_bh; |
| char *bi_clone; |
| u32 bi_offset; |
| u32 bi_start; |
| u32 bi_len; |
| }; |
| |
| struct gfs2_rgrp_host { |
| u32 rg_free; |
| u32 rg_dinodes; |
| u64 rg_igeneration; |
| }; |
| |
| struct gfs2_rgrpd { |
| struct list_head rd_list; /* Link with superblock */ |
| struct list_head rd_list_mru; |
| struct list_head rd_recent; /* Recently used rgrps */ |
| struct gfs2_glock *rd_gl; /* Glock for this rgrp */ |
| u64 rd_addr; /* grp block disk address */ |
| u64 rd_data0; /* first data location */ |
| u32 rd_length; /* length of rgrp header in fs blocks */ |
| u32 rd_data; /* num of data blocks in rgrp */ |
| u32 rd_bitbytes; /* number of bytes in data bitmaps */ |
| struct gfs2_rgrp_host rd_rg; |
| struct gfs2_bitmap *rd_bits; |
| unsigned int rd_bh_count; |
| struct mutex rd_mutex; |
| u32 rd_free_clone; |
| struct gfs2_log_element rd_le; |
| u32 rd_last_alloc; |
| struct gfs2_sbd *rd_sbd; |
| unsigned char rd_flags; |
| #define GFS2_RDF_CHECK 0x01 /* Need to check for unlinked inodes */ |
| #define GFS2_RDF_NOALLOC 0x02 /* rg prohibits allocation */ |
| #define GFS2_RDF_UPTODATE 0x04 /* rg is up to date */ |
| }; |
| |
| enum gfs2_state_bits { |
| BH_Pinned = BH_PrivateStart, |
| BH_Escaped = BH_PrivateStart + 1, |
| }; |
| |
| BUFFER_FNS(Pinned, pinned) |
| TAS_BUFFER_FNS(Pinned, pinned) |
| BUFFER_FNS(Escaped, escaped) |
| TAS_BUFFER_FNS(Escaped, escaped) |
| |
| struct gfs2_bufdata { |
| struct buffer_head *bd_bh; |
| struct gfs2_glock *bd_gl; |
| |
| union { |
| struct list_head list_tr; |
| u64 blkno; |
| } u; |
| #define bd_list_tr u.list_tr |
| #define bd_blkno u.blkno |
| |
| struct gfs2_log_element bd_le; |
| |
| struct gfs2_ail *bd_ail; |
| struct list_head bd_ail_st_list; |
| struct list_head bd_ail_gl_list; |
| }; |
| |
| struct gfs2_glock_operations { |
| void (*go_xmote_th) (struct gfs2_glock *gl); |
| void (*go_xmote_bh) (struct gfs2_glock *gl); |
| void (*go_inval) (struct gfs2_glock *gl, int flags); |
| int (*go_demote_ok) (struct gfs2_glock *gl); |
| int (*go_lock) (struct gfs2_holder *gh); |
| void (*go_unlock) (struct gfs2_holder *gh); |
| const int go_type; |
| const unsigned long go_min_hold_time; |
| }; |
| |
| enum { |
| /* States */ |
| HIF_HOLDER = 6, |
| HIF_FIRST = 7, |
| HIF_ABORTED = 9, |
| HIF_WAIT = 10, |
| }; |
| |
| struct gfs2_holder { |
| struct list_head gh_list; |
| |
| struct gfs2_glock *gh_gl; |
| struct pid *gh_owner_pid; |
| unsigned int gh_state; |
| unsigned gh_flags; |
| |
| int gh_error; |
| unsigned long gh_iflags; |
| unsigned long gh_ip; |
| }; |
| |
| enum { |
| GLF_LOCK = 1, |
| GLF_STICKY = 2, |
| GLF_DEMOTE = 3, |
| GLF_PENDING_DEMOTE = 4, |
| GLF_DIRTY = 5, |
| GLF_DEMOTE_IN_PROGRESS = 6, |
| GLF_LFLUSH = 7, |
| GLF_WAITERS2 = 8, |
| GLF_CONV_DEADLK = 9, |
| }; |
| |
| struct gfs2_glock { |
| struct hlist_node gl_list; |
| unsigned long gl_flags; /* GLF_... */ |
| struct lm_lockname gl_name; |
| atomic_t gl_ref; |
| |
| spinlock_t gl_spin; |
| |
| unsigned int gl_state; |
| unsigned int gl_hash; |
| unsigned int gl_demote_state; /* state requested by remote node */ |
| unsigned long gl_demote_time; /* time of first demote request */ |
| struct pid *gl_owner_pid; |
| unsigned long gl_ip; |
| struct list_head gl_holders; |
| struct list_head gl_waiters1; /* HIF_MUTEX */ |
| struct list_head gl_waiters3; /* HIF_PROMOTE */ |
| |
| const struct gfs2_glock_operations *gl_ops; |
| |
| struct gfs2_holder *gl_req_gh; |
| |
| void *gl_lock; |
| char *gl_lvb; |
| atomic_t gl_lvb_count; |
| |
| unsigned long gl_stamp; |
| unsigned long gl_tchange; |
| void *gl_object; |
| |
| struct list_head gl_reclaim; |
| |
| struct gfs2_sbd *gl_sbd; |
| |
| struct inode *gl_aspace; |
| struct list_head gl_ail_list; |
| atomic_t gl_ail_count; |
| struct delayed_work gl_work; |
| }; |
| |
| #define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */ |
| |
| struct gfs2_alloc { |
| /* Quota stuff */ |
| |
| struct gfs2_quota_data *al_qd[2*MAXQUOTAS]; |
| struct gfs2_holder al_qd_ghs[2*MAXQUOTAS]; |
| unsigned int al_qd_num; |
| |
| u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */ |
| u32 al_alloced; /* Filled in by gfs2_alloc_*() */ |
| |
| /* Filled in by gfs2_inplace_reserve() */ |
| |
| unsigned int al_line; |
| char *al_file; |
| struct gfs2_holder al_ri_gh; |
| struct gfs2_holder al_rgd_gh; |
| struct gfs2_rgrpd *al_rgd; |
| |
| }; |
| |
| enum { |
| GIF_INVALID = 0, |
| GIF_QD_LOCKED = 1, |
| GIF_SW_PAGED = 3, |
| GIF_USER = 4, /* user inode, not metadata addr space */ |
| }; |
| |
| struct gfs2_dinode_host { |
| u64 di_size; /* number of bytes in file */ |
| u64 di_generation; /* generation number for NFS */ |
| u32 di_flags; /* GFS2_DIF_... */ |
| /* These only apply to directories */ |
| u32 di_entries; /* The number of entries in the directory */ |
| u64 di_eattr; /* extended attribute block number */ |
| }; |
| |
| struct gfs2_inode { |
| struct inode i_inode; |
| u64 i_no_addr; |
| u64 i_no_formal_ino; |
| unsigned long i_flags; /* GIF_... */ |
| |
| struct gfs2_dinode_host i_di; /* To be replaced by ref to block */ |
| |
| struct gfs2_glock *i_gl; /* Move into i_gh? */ |
| struct gfs2_holder i_iopen_gh; |
| struct gfs2_holder i_gh; /* for prepare/commit_write only */ |
| struct gfs2_alloc *i_alloc; |
| u64 i_goal; /* goal block for allocations */ |
| struct rw_semaphore i_rw_mutex; |
| u8 i_height; |
| u8 i_depth; |
| }; |
| |
| /* |
| * Since i_inode is the first element of struct gfs2_inode, |
| * this is effectively a cast. |
| */ |
| static inline struct gfs2_inode *GFS2_I(struct inode *inode) |
| { |
| return container_of(inode, struct gfs2_inode, i_inode); |
| } |
| |
| static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode) |
| { |
| return inode->i_sb->s_fs_info; |
| } |
| |
| struct gfs2_file { |
| struct mutex f_fl_mutex; |
| struct gfs2_holder f_fl_gh; |
| }; |
| |
| struct gfs2_revoke_replay { |
| struct list_head rr_list; |
| u64 rr_blkno; |
| unsigned int rr_where; |
| }; |
| |
| enum { |
| QDF_USER = 0, |
| QDF_CHANGE = 1, |
| QDF_LOCKED = 2, |
| }; |
| |
| struct gfs2_quota_data { |
| struct list_head qd_list; |
| unsigned int qd_count; |
| |
| u32 qd_id; |
| unsigned long qd_flags; /* QDF_... */ |
| |
| s64 qd_change; |
| s64 qd_change_sync; |
| |
| unsigned int qd_slot; |
| unsigned int qd_slot_count; |
| |
| struct buffer_head *qd_bh; |
| struct gfs2_quota_change *qd_bh_qc; |
| unsigned int qd_bh_count; |
| |
| struct gfs2_glock *qd_gl; |
| struct gfs2_quota_lvb qd_qb; |
| |
| u64 qd_sync_gen; |
| unsigned long qd_last_warn; |
| unsigned long qd_last_touched; |
| }; |
| |
| struct gfs2_trans { |
| unsigned long tr_ip; |
| |
| unsigned int tr_blocks; |
| unsigned int tr_revokes; |
| unsigned int tr_reserved; |
| |
| struct gfs2_holder tr_t_gh; |
| |
| int tr_touched; |
| |
| unsigned int tr_num_buf; |
| unsigned int tr_num_buf_new; |
| unsigned int tr_num_databuf_new; |
| unsigned int tr_num_buf_rm; |
| unsigned int tr_num_databuf_rm; |
| struct list_head tr_list_buf; |
| |
| unsigned int tr_num_revoke; |
| unsigned int tr_num_revoke_rm; |
| }; |
| |
| struct gfs2_ail { |
| struct list_head ai_list; |
| |
| unsigned int ai_first; |
| struct list_head ai_ail1_list; |
| struct list_head ai_ail2_list; |
| |
| u64 ai_sync_gen; |
| }; |
| |
| struct gfs2_journal_extent { |
| struct list_head extent_list; |
| |
| unsigned int lblock; /* First logical block */ |
| u64 dblock; /* First disk block */ |
| u64 blocks; |
| }; |
| |
| struct gfs2_jdesc { |
| struct list_head jd_list; |
| struct list_head extent_list; |
| |
| struct inode *jd_inode; |
| unsigned int jd_jid; |
| int jd_dirty; |
| |
| unsigned int jd_blocks; |
| }; |
| |
| struct gfs2_statfs_change_host { |
| s64 sc_total; |
| s64 sc_free; |
| s64 sc_dinodes; |
| }; |
| |
| #define GFS2_GLOCKD_DEFAULT 1 |
| #define GFS2_GLOCKD_MAX 16 |
| |
| #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF |
| #define GFS2_QUOTA_OFF 0 |
| #define GFS2_QUOTA_ACCOUNT 1 |
| #define GFS2_QUOTA_ON 2 |
| |
| #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED |
| #define GFS2_DATA_WRITEBACK 1 |
| #define GFS2_DATA_ORDERED 2 |
| |
| struct gfs2_args { |
| char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */ |
| char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */ |
| char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */ |
| int ar_spectator; /* Don't get a journal because we're always RO */ |
| int ar_ignore_local_fs; /* Don't optimize even if local_fs is 1 */ |
| int ar_localflocks; /* Let the VFS do flock|fcntl locks for us */ |
| int ar_localcaching; /* Local-style caching (dangerous on multihost) */ |
| int ar_debug; /* Oops on errors instead of trying to be graceful */ |
| int ar_upgrade; /* Upgrade ondisk/multihost format */ |
| unsigned int ar_num_glockd; /* Number of glockd threads */ |
| int ar_posix_acl; /* Enable posix acls */ |
| int ar_quota; /* off/account/on */ |
| int ar_suiddir; /* suiddir support */ |
| int ar_data; /* ordered/writeback */ |
| }; |
| |
| struct gfs2_tune { |
| spinlock_t gt_spin; |
| |
| unsigned int gt_demote_secs; /* Cache retention for unheld glock */ |
| unsigned int gt_incore_log_blocks; |
| unsigned int gt_log_flush_secs; |
| |
| unsigned int gt_recoverd_secs; |
| unsigned int gt_logd_secs; |
| unsigned int gt_quotad_secs; |
| |
| unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */ |
| unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */ |
| unsigned int gt_quota_scale_num; /* Numerator */ |
| unsigned int gt_quota_scale_den; /* Denominator */ |
| unsigned int gt_quota_cache_secs; |
| unsigned int gt_quota_quantum; /* Secs between syncs to quota file */ |
| unsigned int gt_atime_quantum; /* Min secs between atime updates */ |
| unsigned int gt_new_files_jdata; |
| unsigned int gt_new_files_directio; |
| unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */ |
| unsigned int gt_stall_secs; /* Detects trouble! */ |
| unsigned int gt_complain_secs; |
| unsigned int gt_statfs_quantum; |
| unsigned int gt_statfs_slow; |
| }; |
| |
| enum { |
| SDF_JOURNAL_CHECKED = 0, |
| SDF_JOURNAL_LIVE = 1, |
| SDF_SHUTDOWN = 2, |
| SDF_NOATIME = 3, |
| }; |
| |
| #define GFS2_FSNAME_LEN 256 |
| |
| struct gfs2_inum_host { |
| u64 no_formal_ino; |
| u64 no_addr; |
| }; |
| |
| struct gfs2_sb_host { |
| u32 sb_magic; |
| u32 sb_type; |
| u32 sb_format; |
| |
| u32 sb_fs_format; |
| u32 sb_multihost_format; |
| u32 sb_bsize; |
| u32 sb_bsize_shift; |
| |
| struct gfs2_inum_host sb_master_dir; |
| struct gfs2_inum_host sb_root_dir; |
| |
| char sb_lockproto[GFS2_LOCKNAME_LEN]; |
| char sb_locktable[GFS2_LOCKNAME_LEN]; |
| }; |
| |
| struct gfs2_sbd { |
| struct super_block *sd_vfs; |
| struct super_block *sd_vfs_meta; |
| struct kobject sd_kobj; |
| unsigned long sd_flags; /* SDF_... */ |
| struct gfs2_sb_host sd_sb; |
| |
| /* Constants computed on mount */ |
| |
| u32 sd_fsb2bb; |
| u32 sd_fsb2bb_shift; |
| u32 sd_diptrs; /* Number of pointers in a dinode */ |
| u32 sd_inptrs; /* Number of pointers in a indirect block */ |
| u32 sd_jbsize; /* Size of a journaled data block */ |
| u32 sd_hash_bsize; /* sizeof(exhash block) */ |
| u32 sd_hash_bsize_shift; |
| u32 sd_hash_ptrs; /* Number of pointers in a hash block */ |
| u32 sd_qc_per_block; |
| u32 sd_max_dirres; /* Max blocks needed to add a directory entry */ |
| u32 sd_max_height; /* Max height of a file's metadata tree */ |
| u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1]; |
| u32 sd_max_jheight; /* Max height of journaled file's meta tree */ |
| u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1]; |
| |
| struct gfs2_args sd_args; /* Mount arguments */ |
| struct gfs2_tune sd_tune; /* Filesystem tuning structure */ |
| |
| /* Lock Stuff */ |
| |
| struct lm_lockstruct sd_lockstruct; |
| struct list_head sd_reclaim_list; |
| spinlock_t sd_reclaim_lock; |
| wait_queue_head_t sd_reclaim_wq; |
| atomic_t sd_reclaim_count; |
| struct gfs2_holder sd_live_gh; |
| struct gfs2_glock *sd_rename_gl; |
| struct gfs2_glock *sd_trans_gl; |
| |
| /* Inode Stuff */ |
| |
| struct inode *sd_master_dir; |
| struct inode *sd_jindex; |
| struct inode *sd_inum_inode; |
| struct inode *sd_statfs_inode; |
| struct inode *sd_ir_inode; |
| struct inode *sd_sc_inode; |
| struct inode *sd_qc_inode; |
| struct inode *sd_rindex; |
| struct inode *sd_quota_inode; |
| |
| /* Inum stuff */ |
| |
| struct mutex sd_inum_mutex; |
| |
| /* StatFS stuff */ |
| |
| spinlock_t sd_statfs_spin; |
| struct gfs2_statfs_change_host sd_statfs_master; |
| struct gfs2_statfs_change_host sd_statfs_local; |
| unsigned long sd_statfs_sync_time; |
| |
| /* Resource group stuff */ |
| |
| int sd_rindex_uptodate; |
| spinlock_t sd_rindex_spin; |
| struct mutex sd_rindex_mutex; |
| struct list_head sd_rindex_list; |
| struct list_head sd_rindex_mru_list; |
| struct list_head sd_rindex_recent_list; |
| struct gfs2_rgrpd *sd_rindex_forward; |
| unsigned int sd_rgrps; |
| |
| /* Journal index stuff */ |
| |
| struct list_head sd_jindex_list; |
| spinlock_t sd_jindex_spin; |
| struct mutex sd_jindex_mutex; |
| unsigned int sd_journals; |
| unsigned long sd_jindex_refresh_time; |
| |
| struct gfs2_jdesc *sd_jdesc; |
| struct gfs2_holder sd_journal_gh; |
| struct gfs2_holder sd_jinode_gh; |
| |
| struct gfs2_holder sd_ir_gh; |
| struct gfs2_holder sd_sc_gh; |
| struct gfs2_holder sd_qc_gh; |
| |
| /* Daemon stuff */ |
| |
| struct task_struct *sd_recoverd_process; |
| struct task_struct *sd_logd_process; |
| struct task_struct *sd_quotad_process; |
| struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX]; |
| unsigned int sd_glockd_num; |
| |
| /* Quota stuff */ |
| |
| struct list_head sd_quota_list; |
| atomic_t sd_quota_count; |
| spinlock_t sd_quota_spin; |
| struct mutex sd_quota_mutex; |
| |
| unsigned int sd_quota_slots; |
| unsigned int sd_quota_chunks; |
| unsigned char **sd_quota_bitmap; |
| |
| u64 sd_quota_sync_gen; |
| unsigned long sd_quota_sync_time; |
| |
| /* Log stuff */ |
| |
| spinlock_t sd_log_lock; |
| |
| unsigned int sd_log_blks_reserved; |
| unsigned int sd_log_commited_buf; |
| unsigned int sd_log_commited_databuf; |
| unsigned int sd_log_commited_revoke; |
| |
| unsigned int sd_log_num_buf; |
| unsigned int sd_log_num_revoke; |
| unsigned int sd_log_num_rg; |
| unsigned int sd_log_num_databuf; |
| |
| struct list_head sd_log_le_buf; |
| struct list_head sd_log_le_revoke; |
| struct list_head sd_log_le_rg; |
| struct list_head sd_log_le_databuf; |
| struct list_head sd_log_le_ordered; |
| |
| atomic_t sd_log_blks_free; |
| struct mutex sd_log_reserve_mutex; |
| |
| u64 sd_log_sequence; |
| unsigned int sd_log_head; |
| unsigned int sd_log_tail; |
| int sd_log_idle; |
| |
| unsigned long sd_log_flush_time; |
| struct rw_semaphore sd_log_flush_lock; |
| atomic_t sd_log_in_flight; |
| wait_queue_head_t sd_log_flush_wait; |
| |
| unsigned int sd_log_flush_head; |
| u64 sd_log_flush_wrapped; |
| |
| struct list_head sd_ail1_list; |
| struct list_head sd_ail2_list; |
| u64 sd_ail_sync_gen; |
| |
| /* Replay stuff */ |
| |
| struct list_head sd_revoke_list; |
| unsigned int sd_replay_tail; |
| |
| unsigned int sd_found_blocks; |
| unsigned int sd_found_revokes; |
| unsigned int sd_replayed_blocks; |
| |
| /* For quiescing the filesystem */ |
| |
| struct gfs2_holder sd_freeze_gh; |
| struct mutex sd_freeze_lock; |
| unsigned int sd_freeze_count; |
| |
| /* Counters */ |
| |
| atomic_t sd_reclaimed; |
| |
| char sd_fsname[GFS2_FSNAME_LEN]; |
| char sd_table_name[GFS2_FSNAME_LEN]; |
| char sd_proto_name[GFS2_FSNAME_LEN]; |
| |
| /* Debugging crud */ |
| |
| unsigned long sd_last_warning; |
| struct vfsmount *sd_gfs2mnt; |
| struct dentry *debugfs_dir; /* debugfs directory */ |
| struct dentry *debugfs_dentry_glocks; /* for debugfs */ |
| }; |
| |
| #endif /* __INCORE_DOT_H__ */ |
| |