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![Bob Peterson](/assets/img/avatar_default.png)
Variable qd_slot_count is a reference count, not a count of slots. This patch renames it to qd_slot_ref to make that more clear. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
874 lines
24 KiB
C
874 lines
24 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
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* Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
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*/
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#ifndef __INCORE_DOT_H__
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#define __INCORE_DOT_H__
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#include <linux/fs.h>
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#include <linux/kobject.h>
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#include <linux/workqueue.h>
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#include <linux/dlm.h>
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#include <linux/buffer_head.h>
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#include <linux/rcupdate.h>
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#include <linux/rculist_bl.h>
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#include <linux/completion.h>
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#include <linux/rbtree.h>
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#include <linux/ktime.h>
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#include <linux/percpu.h>
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#include <linux/lockref.h>
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#include <linux/rhashtable.h>
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#include <linux/mutex.h>
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#define DIO_WAIT 0x00000010
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#define DIO_METADATA 0x00000020
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struct gfs2_log_operations;
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struct gfs2_bufdata;
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struct gfs2_holder;
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struct gfs2_glock;
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struct gfs2_quota_data;
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struct gfs2_trans;
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struct gfs2_jdesc;
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struct gfs2_sbd;
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struct lm_lockops;
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typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret);
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struct gfs2_log_header_host {
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u64 lh_sequence; /* Sequence number of this transaction */
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u32 lh_flags; /* GFS2_LOG_HEAD_... */
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u32 lh_tail; /* Block number of log tail */
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u32 lh_blkno;
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s64 lh_local_total;
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s64 lh_local_free;
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s64 lh_local_dinodes;
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};
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/*
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* Structure of operations that are associated with each
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* type of element in the log.
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*/
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struct gfs2_log_operations {
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void (*lo_before_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
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void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
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void (*lo_before_scan) (struct gfs2_jdesc *jd,
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struct gfs2_log_header_host *head, int pass);
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int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start,
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struct gfs2_log_descriptor *ld, __be64 *ptr,
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int pass);
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void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass);
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const char *lo_name;
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};
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#define GBF_FULL 1
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/**
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* Clone bitmaps (bi_clone):
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*
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* - When a block is freed, we remember the previous state of the block in the
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* clone bitmap, and only mark the block as free in the real bitmap.
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*
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* - When looking for a block to allocate, we check for a free block in the
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* clone bitmap, and if no clone bitmap exists, in the real bitmap.
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*
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* - For allocating a block, we mark it as allocated in the real bitmap, and if
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* a clone bitmap exists, also in the clone bitmap.
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*
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* - At the end of a log_flush, we copy the real bitmap into the clone bitmap
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* to make the clone bitmap reflect the current allocation state.
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* (Alternatively, we could remove the clone bitmap.)
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*
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* The clone bitmaps are in-core only, and is never written to disk.
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*
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* These steps ensure that blocks which have been freed in a transaction cannot
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* be reallocated in that same transaction.
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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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unsigned long bi_flags;
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u32 bi_offset;
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u32 bi_start;
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u32 bi_bytes;
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u32 bi_blocks;
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};
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struct gfs2_rgrpd {
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struct rb_node rd_node; /* Link with superblock */
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struct gfs2_glock *rd_gl; /* Glock for this rgrp */
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u64 rd_addr; /* grp block disk address */
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u64 rd_data0; /* first data location */
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u32 rd_length; /* length of rgrp header in fs blocks */
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u32 rd_data; /* num of data blocks in rgrp */
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u32 rd_bitbytes; /* number of bytes in data bitmaps */
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u32 rd_free;
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u32 rd_requested; /* number of blocks in rd_rstree */
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u32 rd_reserved; /* number of reserved blocks */
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u32 rd_free_clone;
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u32 rd_dinodes;
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u64 rd_igeneration;
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struct gfs2_bitmap *rd_bits;
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struct gfs2_sbd *rd_sbd;
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struct gfs2_rgrp_lvb *rd_rgl;
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u32 rd_last_alloc;
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u32 rd_flags;
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u32 rd_extfail_pt; /* extent failure point */
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#define GFS2_RDF_CHECK 0x10000000 /* check for unlinked inodes */
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#define GFS2_RDF_ERROR 0x40000000 /* error in rg */
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#define GFS2_RDF_PREFERRED 0x80000000 /* This rgrp is preferred */
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#define GFS2_RDF_MASK 0xf0000000 /* mask for internal flags */
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spinlock_t rd_rsspin; /* protects reservation related vars */
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struct mutex rd_mutex;
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struct rb_root rd_rstree; /* multi-block reservation tree */
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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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u64 bd_blkno;
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struct list_head bd_list;
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struct gfs2_trans *bd_tr;
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struct list_head bd_ail_st_list;
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struct list_head bd_ail_gl_list;
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};
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/*
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* Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a
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* prefix of lock_dlm_ gets awkward.
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*/
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#define GDLM_STRNAME_BYTES 25
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#define GDLM_LVB_SIZE 32
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/*
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* ls_recover_flags:
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*
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* DFL_BLOCK_LOCKS: dlm is in recovery and will grant locks that had been
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* held by failed nodes whose journals need recovery. Those locks should
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* only be used for journal recovery until the journal recovery is done.
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* This is set by the dlm recover_prep callback and cleared by the
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* gfs2_control thread when journal recovery is complete. To avoid
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* races between recover_prep setting and gfs2_control clearing, recover_spin
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* is held while changing this bit and reading/writing recover_block
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* and recover_start.
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*
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* DFL_NO_DLM_OPS: dlm lockspace ops/callbacks are not being used.
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*
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* DFL_FIRST_MOUNT: this node is the first to mount this fs and is doing
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* recovery of all journals before allowing other nodes to mount the fs.
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* This is cleared when FIRST_MOUNT_DONE is set.
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*
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* DFL_FIRST_MOUNT_DONE: this node was the first mounter, and has finished
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* recovery of all journals, and now allows other nodes to mount the fs.
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*
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* DFL_MOUNT_DONE: gdlm_mount has completed successfully and cleared
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* BLOCK_LOCKS for the first time. The gfs2_control thread should now
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* control clearing BLOCK_LOCKS for further recoveries.
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*
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* DFL_UNMOUNT: gdlm_unmount sets to keep sdp off gfs2_control_wq.
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*
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* DFL_DLM_RECOVERY: set while dlm is in recovery, between recover_prep()
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* and recover_done(), i.e. set while recover_block == recover_start.
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*/
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enum {
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DFL_BLOCK_LOCKS = 0,
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DFL_NO_DLM_OPS = 1,
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DFL_FIRST_MOUNT = 2,
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DFL_FIRST_MOUNT_DONE = 3,
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DFL_MOUNT_DONE = 4,
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DFL_UNMOUNT = 5,
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DFL_DLM_RECOVERY = 6,
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};
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/*
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* We are using struct lm_lockname as an rhashtable key. Avoid holes within
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* the struct; padding at the end is fine.
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*/
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struct lm_lockname {
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u64 ln_number;
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struct gfs2_sbd *ln_sbd;
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unsigned int ln_type;
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};
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#define lm_name_equal(name1, name2) \
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(((name1)->ln_number == (name2)->ln_number) && \
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((name1)->ln_type == (name2)->ln_type) && \
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((name1)->ln_sbd == (name2)->ln_sbd))
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struct gfs2_glock_operations {
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int (*go_sync) (struct gfs2_glock *gl);
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int (*go_xmote_bh)(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) (const struct gfs2_glock *gl);
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int (*go_instantiate) (struct gfs2_glock *gl);
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int (*go_held)(struct gfs2_holder *gh);
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void (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl,
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const char *fs_id_buf);
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void (*go_callback)(struct gfs2_glock *gl, bool remote);
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void (*go_free)(struct gfs2_glock *gl);
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const int go_subclass;
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const int go_type;
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const unsigned long go_flags;
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#define GLOF_ASPACE 1 /* address space attached */
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#define GLOF_LVB 2 /* Lock Value Block attached */
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#define GLOF_LRU 4 /* LRU managed */
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#define GLOF_NONDISK 8 /* not I/O related */
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};
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enum {
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GFS2_LKS_SRTT = 0, /* Non blocking smoothed round trip time */
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GFS2_LKS_SRTTVAR = 1, /* Non blocking smoothed variance */
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GFS2_LKS_SRTTB = 2, /* Blocking smoothed round trip time */
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GFS2_LKS_SRTTVARB = 3, /* Blocking smoothed variance */
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GFS2_LKS_SIRT = 4, /* Smoothed Inter-request time */
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GFS2_LKS_SIRTVAR = 5, /* Smoothed Inter-request variance */
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GFS2_LKS_DCOUNT = 6, /* Count of dlm requests */
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GFS2_LKS_QCOUNT = 7, /* Count of gfs2_holder queues */
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GFS2_NR_LKSTATS
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};
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struct gfs2_lkstats {
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u64 stats[GFS2_NR_LKSTATS];
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};
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enum {
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/* States */
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HIF_HOLDER = 6, /* Set for gh that "holds" the glock */
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HIF_WAIT = 10,
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};
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struct gfs2_holder {
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struct list_head gh_list;
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struct gfs2_glock *gh_gl;
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struct pid *gh_owner_pid;
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u16 gh_flags;
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u16 gh_state;
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int gh_error;
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unsigned long gh_iflags; /* HIF_... */
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unsigned long gh_ip;
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};
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/* Number of quota types we support */
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#define GFS2_MAXQUOTAS 2
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struct gfs2_qadata { /* quota allocation data */
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/* Quota stuff */
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struct gfs2_quota_data *qa_qd[2 * GFS2_MAXQUOTAS];
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struct gfs2_holder qa_qd_ghs[2 * GFS2_MAXQUOTAS];
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unsigned int qa_qd_num;
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int qa_ref;
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};
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/* Resource group multi-block reservation, in order of appearance:
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Step 1. Function prepares to write, allocates a mb, sets the size hint.
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Step 2. User calls inplace_reserve to target an rgrp, sets the rgrp info
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Step 3. Function get_local_rgrp locks the rgrp, determines which bits to use
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Step 4. Bits are assigned from the rgrp based on either the reservation
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or wherever it can.
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*/
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struct gfs2_blkreserv {
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struct rb_node rs_node; /* node within rd_rstree */
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struct gfs2_rgrpd *rs_rgd;
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u64 rs_start;
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u32 rs_requested;
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u32 rs_reserved; /* number of reserved blocks */
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};
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/*
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* Allocation parameters
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* @target: The number of blocks we'd ideally like to allocate
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* @aflags: The flags (e.g. Orlov flag)
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*
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* The intent is to gradually expand this structure over time in
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* order to give more information, e.g. alignment, min extent size
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* to the allocation code.
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*/
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struct gfs2_alloc_parms {
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u64 target;
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u32 min_target;
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u32 aflags;
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u64 allowed;
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};
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enum {
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GLF_LOCK = 1,
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GLF_INSTANTIATE_NEEDED = 2, /* needs instantiate */
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GLF_DEMOTE = 3,
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GLF_PENDING_DEMOTE = 4,
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GLF_DEMOTE_IN_PROGRESS = 5,
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GLF_DIRTY = 6,
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GLF_LFLUSH = 7,
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GLF_INVALIDATE_IN_PROGRESS = 8,
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GLF_REPLY_PENDING = 9,
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GLF_INITIAL = 10,
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GLF_FROZEN = 11,
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GLF_INSTANTIATE_IN_PROG = 12, /* instantiate happening now */
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GLF_LRU = 13,
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GLF_OBJECT = 14, /* Used only for tracing */
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GLF_BLOCKING = 15,
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GLF_FREEING = 16, /* Wait for glock to be freed */
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GLF_TRY_TO_EVICT = 17, /* iopen glocks only */
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GLF_VERIFY_EVICT = 18, /* iopen glocks only */
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};
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struct gfs2_glock {
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unsigned long gl_flags; /* GLF_... */
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struct lm_lockname gl_name;
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struct lockref gl_lockref;
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/* State fields protected by gl_lockref.lock */
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unsigned int gl_state:2, /* Current state */
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gl_target:2, /* Target state */
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gl_demote_state:2, /* State requested by remote node */
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gl_req:2, /* State in last dlm request */
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gl_reply:8; /* Last reply from the dlm */
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unsigned long gl_demote_time; /* time of first demote request */
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long gl_hold_time;
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struct list_head gl_holders;
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const struct gfs2_glock_operations *gl_ops;
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ktime_t gl_dstamp;
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struct gfs2_lkstats gl_stats;
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struct dlm_lksb gl_lksb;
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unsigned long gl_tchange;
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void *gl_object;
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struct list_head gl_lru;
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struct list_head gl_ail_list;
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atomic_t gl_ail_count;
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atomic_t gl_revokes;
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struct delayed_work gl_work;
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/* For iopen glocks only */
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struct {
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struct delayed_work gl_delete;
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u64 gl_no_formal_ino;
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};
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struct rcu_head gl_rcu;
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struct rhash_head gl_node;
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};
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enum {
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GIF_QD_LOCKED = 1,
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GIF_ALLOC_FAILED = 2,
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GIF_SW_PAGED = 3,
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GIF_FREE_VFS_INODE = 5,
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GIF_GLOP_PENDING = 6,
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GIF_DEFERRED_DELETE = 7,
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};
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struct gfs2_inode {
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struct inode i_inode;
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u64 i_no_addr;
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u64 i_no_formal_ino;
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u64 i_generation;
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u64 i_eattr;
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unsigned long i_flags; /* GIF_... */
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struct gfs2_glock *i_gl;
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struct gfs2_holder i_iopen_gh;
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struct gfs2_qadata *i_qadata; /* quota allocation data */
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struct gfs2_holder i_rgd_gh;
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struct gfs2_blkreserv i_res; /* rgrp multi-block reservation */
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u64 i_goal; /* goal block for allocations */
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atomic_t i_sizehint; /* hint of the write size */
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struct rw_semaphore i_rw_mutex;
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struct list_head i_ordered;
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__be64 *i_hash_cache;
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u32 i_entries;
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u32 i_diskflags;
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u8 i_height;
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u8 i_depth;
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u16 i_rahead;
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};
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/*
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* Since i_inode is the first element of struct gfs2_inode,
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* this is effectively a cast.
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*/
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static inline struct gfs2_inode *GFS2_I(struct inode *inode)
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{
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return container_of(inode, struct gfs2_inode, i_inode);
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}
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static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode)
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{
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return inode->i_sb->s_fs_info;
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}
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struct gfs2_file {
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struct mutex f_fl_mutex;
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struct gfs2_holder f_fl_gh;
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};
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struct gfs2_revoke_replay {
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struct list_head rr_list;
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u64 rr_blkno;
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unsigned int rr_where;
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};
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enum {
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QDF_CHANGE = 1,
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QDF_LOCKED = 2,
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QDF_REFRESH = 3,
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QDF_QMSG_QUIET = 4,
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};
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struct gfs2_quota_data {
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struct hlist_bl_node qd_hlist;
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struct list_head qd_list;
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struct kqid qd_id;
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struct gfs2_sbd *qd_sbd;
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struct lockref qd_lockref;
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struct list_head qd_lru;
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unsigned qd_hash;
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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_ref;
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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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struct rcu_head qd_rcu;
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};
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enum {
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TR_TOUCHED = 1,
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TR_ATTACHED = 2,
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TR_ONSTACK = 3,
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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;
|
|
unsigned int tr_revokes;
|
|
unsigned int tr_reserved;
|
|
unsigned long tr_flags;
|
|
|
|
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;
|
|
|
|
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;
|
|
struct bio *jd_log_bio;
|
|
unsigned long jd_flags;
|
|
#define JDF_RECOVERY 1
|
|
unsigned int jd_jid;
|
|
u32 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;
|
|
|
|
u64 jd_no_addr;
|
|
};
|
|
|
|
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_QUOTA_QUIET 3 /* on but not complaining */
|
|
|
|
#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 */
|
|
unsigned int ar_got_rgrplvb:1; /* Was the rgrplvb opt given? */
|
|
unsigned int ar_loccookie:1; /* use location based readdir
|
|
cookies */
|
|
s32 ar_commit; /* Commit interval */
|
|
s32 ar_statfs_quantum; /* The fast statfs interval */
|
|
s32 ar_quota_quantum; /* The quota interval */
|
|
s32 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_WITHDRAWN = 2,
|
|
SDF_NOBARRIERS = 3,
|
|
SDF_NORECOVERY = 4,
|
|
SDF_DEMOTE = 5,
|
|
SDF_NOJOURNALID = 6,
|
|
SDF_RORECOVERY = 7, /* read only recovery */
|
|
SDF_SKIP_DLM_UNLOCK = 8,
|
|
SDF_FORCE_AIL_FLUSH = 9,
|
|
SDF_FREEZE_INITIATOR = 10,
|
|
SDF_WITHDRAWING = 11, /* Will withdraw eventually */
|
|
SDF_WITHDRAW_IN_PROG = 12, /* Withdraw is in progress */
|
|
SDF_REMOTE_WITHDRAW = 13, /* Performing remote recovery */
|
|
SDF_WITHDRAW_RECOVERY = 14, /* Wait for journal recovery when we are
|
|
withdrawing */
|
|
SDF_KILL = 15,
|
|
SDF_EVICTING = 16,
|
|
SDF_FROZEN = 17,
|
|
};
|
|
|
|
#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_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];
|
|
};
|
|
|
|
/* List of local (per node) statfs inodes */
|
|
struct local_statfs_inode {
|
|
struct list_head si_list;
|
|
struct inode *si_sc_inode;
|
|
unsigned int si_jid; /* journal id this statfs inode corresponds to */
|
|
};
|
|
|
|
struct gfs2_sbd {
|
|
struct super_block *sd_vfs;
|
|
struct gfs2_pcpu_lkstats __percpu *sd_lkstats;
|
|
struct kobject sd_kobj;
|
|
struct completion sd_kobj_unregister;
|
|
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_ldptrs; /* Number of pointers in a log descriptor 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_dents_per_leaf; /* Max number of dirents in a leaf block */
|
|
|
|
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_kill_wait;
|
|
wait_queue_head_t sd_async_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 list_head sd_sc_inodes_list;
|
|
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_glock *sd_jinode_gl;
|
|
|
|
struct gfs2_holder sd_sc_gh;
|
|
struct buffer_head *sd_sc_bh;
|
|
struct gfs2_holder sd_qc_gh;
|
|
|
|
struct completion sd_journal_ready;
|
|
|
|
/* Workqueue stuff */
|
|
|
|
struct workqueue_struct *sd_delete_wq;
|
|
|
|
/* 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;
|
|
|
|
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;
|
|
|
|
atomic_t sd_log_pinned;
|
|
unsigned int sd_log_num_revoke;
|
|
|
|
struct list_head sd_log_revokes;
|
|
struct list_head sd_log_ordered;
|
|
spinlock_t sd_ordered_lock;
|
|
|
|
atomic_t sd_log_thresh1;
|
|
atomic_t sd_log_thresh2;
|
|
atomic_t sd_log_blks_free;
|
|
atomic_t sd_log_blks_needed;
|
|
atomic_t sd_log_revokes_available;
|
|
wait_queue_head_t sd_log_waitq;
|
|
wait_queue_head_t sd_logd_waitq;
|
|
|
|
u64 sd_log_sequence;
|
|
int sd_log_idle;
|
|
|
|
struct rw_semaphore sd_log_flush_lock;
|
|
atomic_t sd_log_in_flight;
|
|
wait_queue_head_t sd_log_flush_wait;
|
|
int sd_log_error; /* First log error */
|
|
wait_queue_head_t sd_withdraw_wait;
|
|
|
|
unsigned int sd_log_tail;
|
|
unsigned int sd_log_flush_tail;
|
|
unsigned int sd_log_head;
|
|
unsigned int sd_log_flush_head;
|
|
|
|
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;
|
|
struct mutex sd_freeze_mutex;
|
|
|
|
char sd_fsname[GFS2_FSNAME_LEN + 3 * sizeof(int) + 2];
|
|
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 */
|
|
unsigned long sd_glock_dqs_held;
|
|
};
|
|
|
|
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_name.ln_sbd;
|
|
preempt_disable();
|
|
this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++;
|
|
preempt_enable();
|
|
}
|
|
|
|
extern struct gfs2_rgrpd *gfs2_glock2rgrp(struct gfs2_glock *gl);
|
|
|
|
static inline unsigned gfs2_max_stuffed_size(const struct gfs2_inode *ip)
|
|
{
|
|
return GFS2_SB(&ip->i_inode)->sd_sb.sb_bsize - sizeof(struct gfs2_dinode);
|
|
}
|
|
|
|
#endif /* __INCORE_DOT_H__ */
|
|
|