/* * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. * * This copyrighted material is made available to anyone wishing to use, * modify, copy, or redistribute it subject to the terms and conditions * of the GNU General Public License version 2. */ #ifndef __INCORE_DOT_H__ #define __INCORE_DOT_H__ #include <linux/fs.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); /* * 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_incore_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr); 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_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 */ struct gfs2_rindex_host rd_ri; struct gfs2_rgrp_host rd_rg; u64 rd_rg_vn; 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_data; u32 rd_last_alloc_meta; struct gfs2_sbd *rd_sbd; }; 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; struct list_head bd_list_tr; 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_drop_th) (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; }; enum { /* Actions */ HIF_MUTEX = 0, HIF_PROMOTE = 1, HIF_DEMOTE = 2, /* States */ HIF_ALLOCED = 4, HIF_DEALLOC = 5, 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 task_struct *gh_owner; 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_DIRTY = 5, GLF_SKIP_WAITERS2 = 6, }; 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; struct task_struct *gl_owner; unsigned long gl_ip; struct list_head gl_holders; struct list_head gl_waiters1; /* HIF_MUTEX */ struct list_head gl_waiters2; /* HIF_DEMOTE */ struct list_head gl_waiters3; /* HIF_PROMOTE */ const struct gfs2_glock_operations *gl_ops; struct gfs2_holder *gl_req_gh; gfs2_glop_bh_t gl_req_bh; void *gl_lock; char *gl_lvb; atomic_t gl_lvb_count; u64 gl_vn; unsigned long gl_stamp; void *gl_object; struct list_head gl_reclaim; struct gfs2_sbd *gl_sbd; struct inode *gl_aspace; struct gfs2_log_element gl_le; struct list_head gl_ail_list; atomic_t gl_ail_count; }; 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_PAGED = 2, GIF_SW_PAGED = 3, }; struct gfs2_inode { struct inode i_inode; struct gfs2_inum_host i_num; 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_last_rg_alloc; spinlock_t i_spin; struct rw_semaphore i_rw_mutex; unsigned long i_last_pfault; struct buffer_head *i_cache[GFS2_MAX_META_HEIGHT]; }; /* * 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); } /* To be removed? */ static inline struct gfs2_sbd *GFS2_SB(struct inode *inode) { return inode->i_sb->s_fs_info; } enum { GFF_DID_DIRECT_ALLOC = 0, GFF_EXLOCK = 1, }; struct gfs2_file { unsigned long f_flags; /* GFF_... */ struct mutex f_fl_mutex; struct gfs2_holder f_fl_gh; }; struct gfs2_revoke { struct gfs2_log_element rv_le; u64 rv_blkno; }; 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_lvb { __be32 qb_magic; u32 __pad; __be64 qb_limit; /* Hard limit of # blocks to alloc */ __be64 qb_warn; /* Warn user when alloc is above this # */ __be64 qb_value; /* Current # blocks allocated */ }; 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_log_buf { struct list_head lb_list; struct buffer_head *lb_bh; struct buffer_head *lb_real; }; 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_buf_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_jdesc { struct list_head jd_list; struct inode *jd_inode; unsigned int jd_jid; int jd_dirty; unsigned int jd_blocks; }; #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_ilimit; unsigned int gt_ilimit_tries; unsigned int gt_ilimit_min; 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_jindex_refresh_secs; /* Check for new journal index */ unsigned int gt_scand_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_lockdump_size; unsigned int gt_stall_secs; /* Detects trouble! */ unsigned int gt_complain_secs; unsigned int gt_reclaim_limit; /* Max num of glocks in reclaim list */ 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_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]; u32 sd_max_jheight; /* Max height of journaled file's meta tree */ u64 sd_jheightsize[GFS2_MAX_META_HEIGHT]; 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 mutex sd_statfs_mutex; 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 */ u64 sd_rindex_vn; 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_scand_process; 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_revoke; unsigned int sd_log_num_gl; unsigned int sd_log_num_buf; unsigned int sd_log_num_revoke; unsigned int sd_log_num_rg; unsigned int sd_log_num_databuf; unsigned int sd_log_num_jdata; unsigned int sd_log_num_hdrs; struct list_head sd_log_le_gl; 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; unsigned int 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; struct list_head sd_log_flush_list; 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_glock_count; atomic_t sd_glock_held_count; atomic_t sd_inode_count; 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; }; #endif /* __INCORE_DOT_H__ */