--- /dev/null
+/*
+ * 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/kobject.h>
+#include <linux/workqueue.h>
+#include <linux/dlm.h>
+#include <linux/buffer_head.h>
+#include <linux/rcupdate.h>
+#include <linux/rculist_bl.h>
+#include <linux/completion.h>
+#include <linux/rbtree.h>
+#include <linux/ktime.h>
+#include <linux/percpu.h>
+#include <linux/lockref.h>
+
+#define DIO_WAIT 0x00000010
+#define DIO_METADATA 0x00000020
+
+struct gfs2_log_operations;
+struct gfs2_bufdata;
+struct gfs2_holder;
+struct gfs2_glock;
+struct gfs2_quota_data;
+struct gfs2_trans;
+struct gfs2_jdesc;
+struct gfs2_sbd;
+struct lm_lockops;
+
+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_before_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
+ void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
+ 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;
+};
+
+#define GBF_FULL 1
+
+struct gfs2_bitmap {
+ struct buffer_head *bi_bh;
+ char *bi_clone;
+ unsigned long bi_flags;
+ u32 bi_offset;
+ u32 bi_start;
+ u32 bi_len;
+ u32 bi_blocks;
+};
+
+struct gfs2_rgrpd {
+ struct rb_node rd_node; /* Link with superblock */
+ 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 */
+ u32 rd_free;
+ u32 rd_reserved; /* number of blocks reserved */
+ u32 rd_free_clone;
+ u32 rd_dinodes;
+ u64 rd_igeneration;
+ struct gfs2_bitmap *rd_bits;
+ struct gfs2_sbd *rd_sbd;
+ struct gfs2_rgrp_lvb *rd_rgl;
+ u32 rd_last_alloc;
+ u32 rd_flags;
+ u32 rd_extfail_pt; /* extent failure point */
+#define GFS2_RDF_CHECK 0x10000000 /* check for unlinked inodes */
+#define GFS2_RDF_UPTODATE 0x20000000 /* rg is up to date */
+#define GFS2_RDF_ERROR 0x40000000 /* error in rg */
+#define GFS2_RDF_PREFERRED 0x80000000 /* This rgrp is preferred */
+#define GFS2_RDF_MASK 0xf0000000 /* mask for internal flags */
+ spinlock_t rd_rsspin; /* protects reservation related vars */
+ struct rb_root rd_rstree; /* multi-block reservation tree */
+};
+
+struct gfs2_rbm {
+ struct gfs2_rgrpd *rgd;
+ u32 offset; /* The offset is bitmap relative */
+ int bii; /* Bitmap index */
+};
+
+static inline struct gfs2_bitmap *rbm_bi(const struct gfs2_rbm *rbm)
+{
+ return rbm->rgd->rd_bits + rbm->bii;
+}
+
+static inline u64 gfs2_rbm_to_block(const struct gfs2_rbm *rbm)
+{
+ return rbm->rgd->rd_data0 + (rbm_bi(rbm)->bi_start * GFS2_NBBY) +
+ rbm->offset;
+}
+
+static inline bool gfs2_rbm_eq(const struct gfs2_rbm *rbm1,
+ const struct gfs2_rbm *rbm2)
+{
+ return (rbm1->rgd == rbm2->rgd) && (rbm1->bii == rbm2->bii) &&
+ (rbm1->offset == rbm2->offset);
+}
+
+enum gfs2_state_bits {
+ BH_Pinned = BH_PrivateStart,
+ BH_Escaped = BH_PrivateStart + 1,
+ BH_Zeronew = BH_PrivateStart + 2,
+};
+
+BUFFER_FNS(Pinned, pinned)
+TAS_BUFFER_FNS(Pinned, pinned)
+BUFFER_FNS(Escaped, escaped)
+TAS_BUFFER_FNS(Escaped, escaped)
+BUFFER_FNS(Zeronew, zeronew)
+TAS_BUFFER_FNS(Zeronew, zeronew)
+
+struct gfs2_bufdata {
+ struct buffer_head *bd_bh;
+ struct gfs2_glock *bd_gl;
+ u64 bd_blkno;
+
+ struct list_head bd_list;
+ const struct gfs2_log_operations *bd_ops;
+
+ struct gfs2_trans *bd_tr;
+ struct list_head bd_ail_st_list;
+ struct list_head bd_ail_gl_list;
+};
+
+/*
+ * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a
+ * prefix of lock_dlm_ gets awkward.
+ */
+
+#define GDLM_STRNAME_BYTES 25
+#define GDLM_LVB_SIZE 32
+
+/*
+ * ls_recover_flags:
+ *
+ * DFL_BLOCK_LOCKS: dlm is in recovery and will grant locks that had been
+ * held by failed nodes whose journals need recovery. Those locks should
+ * only be used for journal recovery until the journal recovery is done.
+ * This is set by the dlm recover_prep callback and cleared by the
+ * gfs2_control thread when journal recovery is complete. To avoid
+ * races between recover_prep setting and gfs2_control clearing, recover_spin
+ * is held while changing this bit and reading/writing recover_block
+ * and recover_start.
+ *
+ * DFL_NO_DLM_OPS: dlm lockspace ops/callbacks are not being used.
+ *
+ * DFL_FIRST_MOUNT: this node is the first to mount this fs and is doing
+ * recovery of all journals before allowing other nodes to mount the fs.
+ * This is cleared when FIRST_MOUNT_DONE is set.
+ *
+ * DFL_FIRST_MOUNT_DONE: this node was the first mounter, and has finished
+ * recovery of all journals, and now allows other nodes to mount the fs.
+ *
+ * DFL_MOUNT_DONE: gdlm_mount has completed successfully and cleared
+ * BLOCK_LOCKS for the first time. The gfs2_control thread should now
+ * control clearing BLOCK_LOCKS for further recoveries.
+ *
+ * DFL_UNMOUNT: gdlm_unmount sets to keep sdp off gfs2_control_wq.
+ *
+ * DFL_DLM_RECOVERY: set while dlm is in recovery, between recover_prep()
+ * and recover_done(), i.e. set while recover_block == recover_start.
+ */
+
+enum {
+ DFL_BLOCK_LOCKS = 0,
+ DFL_NO_DLM_OPS = 1,
+ DFL_FIRST_MOUNT = 2,
+ DFL_FIRST_MOUNT_DONE = 3,
+ DFL_MOUNT_DONE = 4,
+ DFL_UNMOUNT = 5,
+ DFL_DLM_RECOVERY = 6,
+};
+
+struct lm_lockname {
+ u64 ln_number;
+ unsigned int ln_type;
+};
+
+#define lm_name_equal(name1, name2) \
+ (((name1)->ln_number == (name2)->ln_number) && \
+ ((name1)->ln_type == (name2)->ln_type))
+
+
+struct gfs2_glock_operations {
+ void (*go_sync) (struct gfs2_glock *gl);
+ int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh);
+ void (*go_inval) (struct gfs2_glock *gl, int flags);
+ int (*go_demote_ok) (const struct gfs2_glock *gl);
+ int (*go_lock) (struct gfs2_holder *gh);
+ void (*go_unlock) (struct gfs2_holder *gh);
+ void (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl);
+ void (*go_callback)(struct gfs2_glock *gl, bool remote);
+ const int go_type;
+ const unsigned long go_flags;
+#define GLOF_ASPACE 1
+#define GLOF_LVB 2
+};
+
+enum {
+ GFS2_LKS_SRTT = 0, /* Non blocking smoothed round trip time */
+ GFS2_LKS_SRTTVAR = 1, /* Non blocking smoothed variance */
+ GFS2_LKS_SRTTB = 2, /* Blocking smoothed round trip time */
+ GFS2_LKS_SRTTVARB = 3, /* Blocking smoothed variance */
+ GFS2_LKS_SIRT = 4, /* Smoothed Inter-request time */
+ GFS2_LKS_SIRTVAR = 5, /* Smoothed Inter-request variance */
+ GFS2_LKS_DCOUNT = 6, /* Count of dlm requests */
+ GFS2_LKS_QCOUNT = 7, /* Count of gfs2_holder queues */
+ GFS2_NR_LKSTATS
+};
+
+struct gfs2_lkstats {
+ s64 stats[GFS2_NR_LKSTATS];
+};
+
+enum {
+ /* States */
+ HIF_HOLDER = 6, /* Set for gh that "holds" the glock */
+ HIF_FIRST = 7,
+ 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; /* HIF_... */
+ unsigned long gh_ip;
+};
+
+/* Number of quota types we support */
+#define GFS2_MAXQUOTAS 2
+
+/* Resource group multi-block reservation, in order of appearance:
+
+ Step 1. Function prepares to write, allocates a mb, sets the size hint.
+ Step 2. User calls inplace_reserve to target an rgrp, sets the rgrp info
+ Step 3. Function get_local_rgrp locks the rgrp, determines which bits to use
+ Step 4. Bits are assigned from the rgrp based on either the reservation
+ or wherever it can.
+*/
+
+struct gfs2_blkreserv {
+ /* components used during write (step 1): */
+ atomic_t rs_sizehint; /* hint of the write size */
+
+ struct gfs2_holder rs_rgd_gh; /* Filled in by get_local_rgrp */
+ struct rb_node rs_node; /* link to other block reservations */
+ struct gfs2_rbm rs_rbm; /* Start of reservation */
+ u32 rs_free; /* how many blocks are still free */
+ u64 rs_inum; /* Inode number for reservation */
+
+ /* ancillary quota stuff */
+ struct gfs2_quota_data *rs_qa_qd[2 * GFS2_MAXQUOTAS];
+ struct gfs2_holder rs_qa_qd_ghs[2 * GFS2_MAXQUOTAS];
+ unsigned int rs_qa_qd_num;
+};
+
+/*
+ * Allocation parameters
+ * @target: The number of blocks we'd ideally like to allocate
+ * @aflags: The flags (e.g. Orlov flag)
+ *
+ * The intent is to gradually expand this structure over time in
+ * order to give more information, e.g. alignment, min extent size
+ * to the allocation code.
+ */
+struct gfs2_alloc_parms {
+ u64 target;
+ u32 min_target;
+ u32 aflags;
+ u64 allowed;
+};
+
+enum {
+ GLF_LOCK = 1,
+ GLF_DEMOTE = 3,
+ GLF_PENDING_DEMOTE = 4,
+ GLF_DEMOTE_IN_PROGRESS = 5,
+ GLF_DIRTY = 6,
+ GLF_LFLUSH = 7,
+ GLF_INVALIDATE_IN_PROGRESS = 8,
+ GLF_REPLY_PENDING = 9,
+ GLF_INITIAL = 10,
+ GLF_FROZEN = 11,
+ GLF_QUEUED = 12,
+ GLF_LRU = 13,
+ GLF_OBJECT = 14, /* Used only for tracing */
+ GLF_BLOCKING = 15,
+};
+
+struct gfs2_glock {
+ struct hlist_bl_node gl_list;
+ struct gfs2_sbd *gl_sbd;
+ unsigned long gl_flags; /* GLF_... */
+ struct lm_lockname gl_name;
+
+ struct lockref gl_lockref;
+#define gl_spin gl_lockref.lock
+
+ /* State fields protected by gl_spin */
+ unsigned int gl_state:2, /* Current state */
+ gl_target:2, /* Target state */
+ gl_demote_state:2, /* State requested by remote node */
+ gl_req:2, /* State in last dlm request */
+ gl_reply:8; /* Last reply from the dlm */
+
+ unsigned int gl_hash;
+ unsigned long gl_demote_time; /* time of first demote request */
+ long gl_hold_time;
+ struct list_head gl_holders;
+
+ const struct gfs2_glock_operations *gl_ops;
+ ktime_t gl_dstamp;
+ struct gfs2_lkstats gl_stats;
+ struct dlm_lksb gl_lksb;
+ unsigned long gl_tchange;
+ void *gl_object;
+
+ struct list_head gl_lru;
+ struct list_head gl_ail_list;
+ atomic_t gl_ail_count;
+ atomic_t gl_revokes;
+ struct delayed_work gl_work;
+ union {
+ /* For inode and iopen glocks only */
+ struct work_struct gl_delete;
+ /* For rgrp glocks only */
+ struct {
+ loff_t start;
+ loff_t end;
+ } gl_vm;
+ };
+ struct rcu_head gl_rcu;
+};
+
+#define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */
+
+enum {
+ GIF_INVALID = 0,
+ GIF_QD_LOCKED = 1,
+ GIF_ALLOC_FAILED = 2,
+ GIF_SW_PAGED = 3,
+ GIF_ORDERED = 4,
+ GIF_FREE_VFS_INODE = 5,
+};
+
+struct gfs2_inode {
+ struct inode i_inode;
+ u64 i_no_addr;
+ u64 i_no_formal_ino;
+ u64 i_generation;
+ u64 i_eattr;
+ unsigned long i_flags; /* GIF_... */
+ 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_blkreserv *i_res; /* rgrp multi-block reservation */
+ struct gfs2_rgrpd *i_rgd;
+ u64 i_goal; /* goal block for allocations */
+ struct rw_semaphore i_rw_mutex;
+ struct list_head i_ordered;
+ struct list_head i_trunc_list;
+ __be64 *i_hash_cache;
+ u32 i_entries;
+ u32 i_diskflags;
+ 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_CHANGE = 1,
+ QDF_LOCKED = 2,
+ QDF_REFRESH = 3,
+};
+
+struct gfs2_quota_data {
+ struct hlist_bl_node qd_hlist;
+ struct list_head qd_list;
+ struct kqid qd_id;
+ struct gfs2_sbd *qd_sbd;
+ struct lockref qd_lockref;
+ struct list_head qd_lru;
+ unsigned qd_hash;
+
+ 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;
+ struct rcu_head qd_rcu;
+};
+
+struct gfs2_trans {
+ unsigned long tr_ip;
+
+ unsigned int tr_blocks;
+ unsigned int tr_revokes;
+ unsigned int tr_reserved;
+ unsigned int tr_touched:1;
+ unsigned int tr_attached:1;
+ unsigned int tr_alloced:1;
+
+ unsigned int tr_num_buf_new;
+ unsigned int tr_num_databuf_new;
+ unsigned int tr_num_buf_rm;
+ unsigned int tr_num_databuf_rm;
+ unsigned int tr_num_revoke;
+ unsigned int tr_num_revoke_rm;
+
+ struct list_head tr_list;
+ struct list_head tr_databuf;
+ struct list_head tr_buf;
+
+ unsigned int tr_first;
+ struct list_head tr_ail1_list;
+ struct list_head tr_ail2_list;
+};
+
+struct gfs2_journal_extent {
+ struct list_head 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;
+ unsigned int nr_extents;
+ struct work_struct jd_work;
+ struct inode *jd_inode;
+ unsigned long jd_flags;
+#define JDF_RECOVERY 1
+ unsigned int jd_jid;
+ unsigned int jd_blocks;
+ int jd_recover_error;
+ /* Replay stuff */
+
+ unsigned int jd_found_blocks;
+ unsigned int jd_found_revokes;
+ unsigned int jd_replayed_blocks;
+
+ struct list_head jd_revoke_list;
+ unsigned int jd_replay_tail;
+
+};
+
+struct gfs2_statfs_change_host {
+ s64 sc_total;
+ s64 sc_free;
+ s64 sc_dinodes;
+};
+
+#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
+
+#define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW
+#define GFS2_ERRORS_WITHDRAW 0
+#define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */
+#define GFS2_ERRORS_RO 2 /* place holder for future feature */
+#define GFS2_ERRORS_PANIC 3
+
+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 */
+ unsigned int ar_spectator:1; /* Don't get a journal */
+ unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */
+ unsigned int ar_debug:1; /* Oops on errors */
+ unsigned int ar_posix_acl:1; /* Enable posix acls */
+ unsigned int ar_quota:2; /* off/account/on */
+ unsigned int ar_suiddir:1; /* suiddir support */
+ unsigned int ar_data:2; /* ordered/writeback */
+ unsigned int ar_meta:1; /* mount metafs */
+ unsigned int ar_discard:1; /* discard requests */
+ unsigned int ar_errors:2; /* errors=withdraw | panic */
+ unsigned int ar_nobarrier:1; /* do not send barriers */
+ unsigned int ar_rgrplvb:1; /* use lvbs for rgrp info */
+ int ar_commit; /* Commit interval */
+ int ar_statfs_quantum; /* The fast statfs interval */
+ int ar_quota_quantum; /* The quota interval */
+ int ar_statfs_percent; /* The % change to force sync */
+};
+
+struct gfs2_tune {
+ spinlock_t gt_spin;
+
+ unsigned int gt_logd_secs;
+
+ 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_quantum; /* Secs between syncs to quota file */
+ unsigned int gt_new_files_jdata;
+ unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
+ 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_NOBARRIERS = 3,
+ SDF_NORECOVERY = 4,
+ SDF_DEMOTE = 5,
+ SDF_NOJOURNALID = 6,
+ SDF_RORECOVERY = 7, /* read only recovery */
+ SDF_SKIP_DLM_UNLOCK = 8,
+};
+
+enum gfs2_freeze_state {
+ SFS_UNFROZEN = 0,
+ SFS_STARTING_FREEZE = 1,
+ SFS_FROZEN = 2,
+};
+
+#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];
+};
+
+/*
+ * lm_mount() return values
+ *
+ * ls_jid - the journal ID this node should use
+ * ls_first - this node is the first to mount the file system
+ * ls_lockspace - lock module's context for this file system
+ * ls_ops - lock module's functions
+ */
+
+struct lm_lockstruct {
+ int ls_jid;
+ unsigned int ls_first;
+ const struct lm_lockops *ls_ops;
+ dlm_lockspace_t *ls_dlm;
+
+ int ls_recover_jid_done; /* These two are deprecated, */
+ int ls_recover_jid_status; /* used previously by gfs_controld */
+
+ struct dlm_lksb ls_mounted_lksb; /* mounted_lock */
+ struct dlm_lksb ls_control_lksb; /* control_lock */
+ char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */
+ struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */
+ char *ls_lvb_bits;
+
+ spinlock_t ls_recover_spin; /* protects following fields */
+ unsigned long ls_recover_flags; /* DFL_ */
+ uint32_t ls_recover_mount; /* gen in first recover_done cb */
+ uint32_t ls_recover_start; /* gen in last recover_done cb */
+ uint32_t ls_recover_block; /* copy recover_start in last recover_prep */
+ uint32_t ls_recover_size; /* size of recover_submit, recover_result */
+ uint32_t *ls_recover_submit; /* gen in last recover_slot cb per jid */
+ uint32_t *ls_recover_result; /* result of last jid recovery */
+};
+
+struct gfs2_pcpu_lkstats {
+ /* One struct for each glock type */
+ struct gfs2_lkstats lkstats[10];
+};
+
+struct gfs2_sbd {
+ struct super_block *sd_vfs;
+ struct gfs2_pcpu_lkstats __percpu *sd_lkstats;
+ 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_blocks_per_bitmap;
+ 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 gfs2_holder sd_live_gh;
+ struct gfs2_glock *sd_rename_gl;
+ struct gfs2_glock *sd_freeze_gl;
+ struct work_struct sd_freeze_work;
+ wait_queue_head_t sd_glock_wait;
+ atomic_t sd_glock_disposal;
+ struct completion sd_locking_init;
+ struct completion sd_wdack;
+ struct delayed_work sd_control_work;
+
+ /* Inode Stuff */
+
+ struct dentry *sd_master_dir;
+ struct dentry *sd_root_dir;
+
+ struct inode *sd_jindex;
+ struct inode *sd_statfs_inode;
+ struct inode *sd_sc_inode;
+ struct inode *sd_qc_inode;
+ struct inode *sd_rindex;
+ struct inode *sd_quota_inode;
+
+ /* StatFS stuff */
+
+ spinlock_t sd_statfs_spin;
+ struct gfs2_statfs_change_host sd_statfs_master;
+ struct gfs2_statfs_change_host sd_statfs_local;
+ int sd_statfs_force_sync;
+
+ /* Resource group stuff */
+
+ int sd_rindex_uptodate;
+ spinlock_t sd_rindex_spin;
+ struct rb_root sd_rindex_tree;
+ unsigned int sd_rgrps;
+ unsigned int sd_max_rg_data;
+
+ /* Journal index stuff */
+
+ struct list_head sd_jindex_list;
+ spinlock_t sd_jindex_spin;
+ struct mutex sd_jindex_mutex;
+ unsigned int sd_journals;
+
+ struct gfs2_jdesc *sd_jdesc;
+ struct gfs2_holder sd_journal_gh;
+ struct gfs2_holder sd_jinode_gh;
+
+ struct gfs2_holder sd_sc_gh;
+ struct gfs2_holder sd_qc_gh;
+
+ struct completion sd_journal_ready;
+
+ /* Daemon stuff */
+
+ struct task_struct *sd_logd_process;
+ struct task_struct *sd_quotad_process;
+
+ /* Quota stuff */
+
+ struct list_head sd_quota_list;
+ atomic_t sd_quota_count;
+ struct mutex sd_quota_mutex;
+ struct mutex sd_quota_sync_mutex;
+ wait_queue_head_t sd_quota_wait;
+ struct list_head sd_trunc_list;
+ spinlock_t sd_trunc_lock;
+
+ unsigned int sd_quota_slots;
+ unsigned long *sd_quota_bitmap;
+ spinlock_t sd_bitmap_lock;
+
+ u64 sd_quota_sync_gen;
+
+ /* Log stuff */
+
+ struct address_space sd_aspace;
+
+ spinlock_t sd_log_lock;
+
+ struct gfs2_trans *sd_log_tr;
+ unsigned int sd_log_blks_reserved;
+ int sd_log_commited_revoke;
+
+ atomic_t sd_log_pinned;
+ unsigned int sd_log_num_revoke;
+
+ struct list_head sd_log_le_revoke;
+ struct list_head sd_log_le_ordered;
+ spinlock_t sd_ordered_lock;
+
+ atomic_t sd_log_thresh1;
+ atomic_t sd_log_thresh2;
+ atomic_t sd_log_blks_free;
+ wait_queue_head_t sd_log_waitq;
+ wait_queue_head_t sd_logd_waitq;
+
+ u64 sd_log_sequence;
+ unsigned int sd_log_head;
+ unsigned int sd_log_tail;
+ int sd_log_idle;
+
+ struct rw_semaphore sd_log_flush_lock;
+ atomic_t sd_log_in_flight;
+ struct bio *sd_log_bio;
+ wait_queue_head_t sd_log_flush_wait;
+ int sd_log_error;
+
+ atomic_t sd_reserving_log;
+ wait_queue_head_t sd_reserving_log_wait;
+
+ unsigned int sd_log_flush_head;
+ u64 sd_log_flush_wrapped;
+
+ spinlock_t sd_ail_lock;
+ struct list_head sd_ail1_list;
+ struct list_head sd_ail2_list;
+
+ /* For quiescing the filesystem */
+ struct gfs2_holder sd_freeze_gh;
+ atomic_t sd_freeze_state;
+ struct mutex sd_freeze_mutex;
+
+ 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 dentry *debugfs_dir; /* debugfs directory */
+ struct dentry *debugfs_dentry_glocks;
+ struct dentry *debugfs_dentry_glstats;
+ struct dentry *debugfs_dentry_sbstats;
+};
+
+static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which)
+{
+ gl->gl_stats.stats[which]++;
+}
+
+static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which)
+{
+ const struct gfs2_sbd *sdp = gl->gl_sbd;
+ preempt_disable();
+ this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++;
+ preempt_enable();
+}
+
+#endif /* __INCORE_DOT_H__ */
+
Code Review / kvmfornfv.git / blobdiff