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873 lines
24 KiB
873 lines
24 KiB
/* 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, 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_MAY_DEMOTE = 1, |
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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_PENDING_DELETE = 17, |
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GLF_FREEING = 18, /* Wait for glock to be freed */ |
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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_count; |
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struct buffer_head *qd_bh; |
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struct gfs2_quota_change *qd_bh_qc; |
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unsigned int qd_bh_count; |
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struct gfs2_glock *qd_gl; |
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struct gfs2_quota_lvb qd_qb; |
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u64 qd_sync_gen; |
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unsigned long qd_last_warn; |
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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; |
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unsigned int tr_revokes; |
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unsigned int tr_reserved; |
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unsigned long tr_flags; |
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unsigned int tr_num_buf_new; |
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unsigned int tr_num_databuf_new; |
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unsigned int tr_num_buf_rm; |
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unsigned int tr_num_databuf_rm; |
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unsigned int tr_num_revoke; |
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struct list_head tr_list; |
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struct list_head tr_databuf; |
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struct list_head tr_buf; |
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unsigned int tr_first; |
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struct list_head tr_ail1_list; |
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struct list_head tr_ail2_list; |
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}; |
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struct gfs2_journal_extent { |
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struct list_head list; |
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unsigned int lblock; /* First logical block */ |
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u64 dblock; /* First disk block */ |
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u64 blocks; |
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}; |
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struct gfs2_jdesc { |
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struct list_head jd_list; |
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struct list_head extent_list; |
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unsigned int nr_extents; |
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struct work_struct jd_work; |
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struct inode *jd_inode; |
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struct bio *jd_log_bio; |
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unsigned long jd_flags; |
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#define JDF_RECOVERY 1 |
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unsigned int jd_jid; |
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u32 jd_blocks; |
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int jd_recover_error; |
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/* Replay stuff */ |
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unsigned int jd_found_blocks; |
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unsigned int jd_found_revokes; |
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unsigned int jd_replayed_blocks; |
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struct list_head jd_revoke_list; |
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unsigned int jd_replay_tail; |
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u64 jd_no_addr; |
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}; |
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struct gfs2_statfs_change_host { |
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s64 sc_total; |
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s64 sc_free; |
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s64 sc_dinodes; |
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}; |
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#define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF |
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#define GFS2_QUOTA_OFF 0 |
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#define GFS2_QUOTA_ACCOUNT 1 |
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#define GFS2_QUOTA_ON 2 |
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#define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED |
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#define GFS2_DATA_WRITEBACK 1 |
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#define GFS2_DATA_ORDERED 2 |
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#define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW |
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#define GFS2_ERRORS_WITHDRAW 0 |
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#define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */ |
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#define GFS2_ERRORS_RO 2 /* place holder for future feature */ |
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#define GFS2_ERRORS_PANIC 3 |
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struct gfs2_args { |
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char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */ |
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char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */ |
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char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */ |
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unsigned int ar_spectator:1; /* Don't get a journal */ |
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unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */ |
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unsigned int ar_debug:1; /* Oops on errors */ |
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unsigned int ar_posix_acl:1; /* Enable posix acls */ |
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unsigned int ar_quota:2; /* off/account/on */ |
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unsigned int ar_suiddir:1; /* suiddir support */ |
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unsigned int ar_data:2; /* ordered/writeback */ |
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unsigned int ar_meta:1; /* mount metafs */ |
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unsigned int ar_discard:1; /* discard requests */ |
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unsigned int ar_errors:2; /* errors=withdraw | panic */ |
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unsigned int ar_nobarrier:1; /* do not send barriers */ |
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unsigned int ar_rgrplvb:1; /* use lvbs for rgrp info */ |
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unsigned int ar_got_rgrplvb:1; /* Was the rgrplvb opt given? */ |
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unsigned int ar_loccookie:1; /* use location based readdir |
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cookies */ |
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s32 ar_commit; /* Commit interval */ |
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s32 ar_statfs_quantum; /* The fast statfs interval */ |
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s32 ar_quota_quantum; /* The quota interval */ |
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s32 ar_statfs_percent; /* The % change to force sync */ |
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}; |
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struct gfs2_tune { |
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spinlock_t gt_spin; |
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unsigned int gt_logd_secs; |
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unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */ |
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unsigned int gt_quota_scale_num; /* Numerator */ |
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unsigned int gt_quota_scale_den; /* Denominator */ |
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unsigned int gt_quota_quantum; /* Secs between syncs to quota file */ |
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unsigned int gt_new_files_jdata; |
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unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */ |
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unsigned int gt_complain_secs; |
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unsigned int gt_statfs_quantum; |
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unsigned int gt_statfs_slow; |
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}; |
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enum { |
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SDF_JOURNAL_CHECKED = 0, |
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SDF_JOURNAL_LIVE = 1, |
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SDF_WITHDRAWN = 2, |
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SDF_NOBARRIERS = 3, |
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SDF_NORECOVERY = 4, |
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SDF_DEMOTE = 5, |
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SDF_NOJOURNALID = 6, |
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SDF_RORECOVERY = 7, /* read only recovery */ |
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SDF_SKIP_DLM_UNLOCK = 8, |
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SDF_FORCE_AIL_FLUSH = 9, |
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SDF_FS_FROZEN = 10, |
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SDF_WITHDRAWING = 11, /* Will withdraw eventually */ |
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SDF_WITHDRAW_IN_PROG = 12, /* Withdraw is in progress */ |
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SDF_REMOTE_WITHDRAW = 13, /* Performing remote recovery */ |
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SDF_WITHDRAW_RECOVERY = 14, /* Wait for journal recovery when we are |
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withdrawing */ |
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}; |
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enum gfs2_freeze_state { |
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SFS_UNFROZEN = 0, |
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SFS_STARTING_FREEZE = 1, |
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SFS_FROZEN = 2, |
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}; |
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#define GFS2_FSNAME_LEN 256 |
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struct gfs2_inum_host { |
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u64 no_formal_ino; |
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u64 no_addr; |
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}; |
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struct gfs2_sb_host { |
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u32 sb_magic; |
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u32 sb_type; |
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u32 sb_fs_format; |
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u32 sb_multihost_format; |
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u32 sb_bsize; |
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u32 sb_bsize_shift; |
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struct gfs2_inum_host sb_master_dir; |
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struct gfs2_inum_host sb_root_dir; |
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char sb_lockproto[GFS2_LOCKNAME_LEN]; |
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char sb_locktable[GFS2_LOCKNAME_LEN]; |
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}; |
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/* |
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* lm_mount() return values |
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* |
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* ls_jid - the journal ID this node should use |
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* ls_first - this node is the first to mount the file system |
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* ls_lockspace - lock module's context for this file system |
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* ls_ops - lock module's functions |
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*/ |
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struct lm_lockstruct { |
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int ls_jid; |
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unsigned int ls_first; |
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const struct lm_lockops *ls_ops; |
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dlm_lockspace_t *ls_dlm; |
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int ls_recover_jid_done; /* These two are deprecated, */ |
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int ls_recover_jid_status; /* used previously by gfs_controld */ |
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struct dlm_lksb ls_mounted_lksb; /* mounted_lock */ |
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struct dlm_lksb ls_control_lksb; /* control_lock */ |
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char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */ |
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struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */ |
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char *ls_lvb_bits; |
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spinlock_t ls_recover_spin; /* protects following fields */ |
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unsigned long ls_recover_flags; /* DFL_ */ |
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uint32_t ls_recover_mount; /* gen in first recover_done cb */ |
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uint32_t ls_recover_start; /* gen in last recover_done cb */ |
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uint32_t ls_recover_block; /* copy recover_start in last recover_prep */ |
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uint32_t ls_recover_size; /* size of recover_submit, recover_result */ |
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uint32_t *ls_recover_submit; /* gen in last recover_slot cb per jid */ |
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uint32_t *ls_recover_result; /* result of last jid recovery */ |
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}; |
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struct gfs2_pcpu_lkstats { |
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/* One struct for each glock type */ |
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struct gfs2_lkstats lkstats[10]; |
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}; |
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/* List of local (per node) statfs inodes */ |
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struct local_statfs_inode { |
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struct list_head si_list; |
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struct inode *si_sc_inode; |
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unsigned int si_jid; /* journal id this statfs inode corresponds to */ |
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}; |
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struct gfs2_sbd { |
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struct super_block *sd_vfs; |
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struct gfs2_pcpu_lkstats __percpu *sd_lkstats; |
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struct kobject sd_kobj; |
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struct completion sd_kobj_unregister; |
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unsigned long sd_flags; /* SDF_... */ |
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struct gfs2_sb_host sd_sb; |
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/* Constants computed on mount */ |
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u32 sd_fsb2bb; |
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u32 sd_fsb2bb_shift; |
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u32 sd_diptrs; /* Number of pointers in a dinode */ |
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u32 sd_inptrs; /* Number of pointers in a indirect block */ |
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u32 sd_ldptrs; /* Number of pointers in a log descriptor block */ |
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u32 sd_jbsize; /* Size of a journaled data block */ |
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u32 sd_hash_bsize; /* sizeof(exhash block) */ |
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u32 sd_hash_bsize_shift; |
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u32 sd_hash_ptrs; /* Number of pointers in a hash block */ |
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u32 sd_qc_per_block; |
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u32 sd_blocks_per_bitmap; |
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u32 sd_max_dirres; /* Max blocks needed to add a directory entry */ |
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u32 sd_max_height; /* Max height of a file's metadata tree */ |
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u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1]; |
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u32 sd_max_dents_per_leaf; /* Max number of dirents in a leaf block */ |
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struct gfs2_args sd_args; /* Mount arguments */ |
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struct gfs2_tune sd_tune; /* Filesystem tuning structure */ |
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/* Lock Stuff */ |
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struct lm_lockstruct sd_lockstruct; |
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struct gfs2_holder sd_live_gh; |
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struct gfs2_glock *sd_rename_gl; |
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struct gfs2_glock *sd_freeze_gl; |
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struct work_struct sd_freeze_work; |
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wait_queue_head_t sd_glock_wait; |
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wait_queue_head_t sd_async_glock_wait; |
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atomic_t sd_glock_disposal; |
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struct completion sd_locking_init; |
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struct completion sd_wdack; |
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struct delayed_work sd_control_work; |
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/* Inode Stuff */ |
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struct dentry *sd_master_dir; |
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struct dentry *sd_root_dir; |
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struct inode *sd_jindex; |
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struct inode *sd_statfs_inode; |
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struct inode *sd_sc_inode; |
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struct list_head sd_sc_inodes_list; |
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struct inode *sd_qc_inode; |
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struct inode *sd_rindex; |
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struct inode *sd_quota_inode; |
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/* StatFS stuff */ |
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spinlock_t sd_statfs_spin; |
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struct gfs2_statfs_change_host sd_statfs_master; |
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struct gfs2_statfs_change_host sd_statfs_local; |
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int sd_statfs_force_sync; |
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/* Resource group stuff */ |
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int sd_rindex_uptodate; |
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spinlock_t sd_rindex_spin; |
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struct rb_root sd_rindex_tree; |
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unsigned int sd_rgrps; |
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unsigned int sd_max_rg_data; |
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/* Journal index stuff */ |
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struct list_head sd_jindex_list; |
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spinlock_t sd_jindex_spin; |
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struct mutex sd_jindex_mutex; |
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unsigned int sd_journals; |
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struct gfs2_jdesc *sd_jdesc; |
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struct gfs2_holder sd_journal_gh; |
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struct gfs2_holder sd_jinode_gh; |
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struct gfs2_glock *sd_jinode_gl; |
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struct gfs2_holder sd_sc_gh; |
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struct buffer_head *sd_sc_bh; |
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struct gfs2_holder sd_qc_gh; |
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struct completion sd_journal_ready; |
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/* Daemon stuff */ |
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struct task_struct *sd_logd_process; |
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struct task_struct *sd_quotad_process; |
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/* Quota stuff */ |
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struct list_head sd_quota_list; |
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atomic_t sd_quota_count; |
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struct mutex sd_quota_mutex; |
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struct mutex sd_quota_sync_mutex; |
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wait_queue_head_t sd_quota_wait; |
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unsigned int sd_quota_slots; |
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unsigned long *sd_quota_bitmap; |
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spinlock_t sd_bitmap_lock; |
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u64 sd_quota_sync_gen; |
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/* Log stuff */ |
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struct address_space sd_aspace; |
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spinlock_t sd_log_lock; |
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struct gfs2_trans *sd_log_tr; |
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unsigned int sd_log_blks_reserved; |
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atomic_t sd_log_pinned; |
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unsigned int sd_log_num_revoke; |
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struct list_head sd_log_revokes; |
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struct list_head sd_log_ordered; |
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spinlock_t sd_ordered_lock; |
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atomic_t sd_log_thresh1; |
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atomic_t sd_log_thresh2; |
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atomic_t sd_log_blks_free; |
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atomic_t sd_log_blks_needed; |
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atomic_t sd_log_revokes_available; |
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wait_queue_head_t sd_log_waitq; |
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wait_queue_head_t sd_logd_waitq; |
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u64 sd_log_sequence; |
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int sd_log_idle; |
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struct rw_semaphore sd_log_flush_lock; |
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atomic_t sd_log_in_flight; |
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wait_queue_head_t sd_log_flush_wait; |
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int sd_log_error; /* First log error */ |
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wait_queue_head_t sd_withdraw_wait; |
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unsigned int sd_log_tail; |
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unsigned int sd_log_flush_tail; |
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unsigned int sd_log_head; |
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unsigned int sd_log_flush_head; |
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spinlock_t sd_ail_lock; |
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struct list_head sd_ail1_list; |
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struct list_head sd_ail2_list; |
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/* For quiescing the filesystem */ |
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struct gfs2_holder sd_freeze_gh; |
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atomic_t sd_freeze_state; |
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struct mutex sd_freeze_mutex; |
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char sd_fsname[GFS2_FSNAME_LEN + 3 * sizeof(int) + 2]; |
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char sd_table_name[GFS2_FSNAME_LEN]; |
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char sd_proto_name[GFS2_FSNAME_LEN]; |
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/* Debugging crud */ |
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unsigned long sd_last_warning; |
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struct dentry *debugfs_dir; /* debugfs directory */ |
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unsigned long sd_glock_dqs_held; |
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}; |
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static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which) |
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{ |
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gl->gl_stats.stats[which]++; |
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} |
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static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which) |
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{ |
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const struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; |
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preempt_disable(); |
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this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++; |
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preempt_enable(); |
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} |
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extern struct gfs2_rgrpd *gfs2_glock2rgrp(struct gfs2_glock *gl); |
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static inline unsigned gfs2_max_stuffed_size(const struct gfs2_inode *ip) |
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{ |
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return GFS2_SB(&ip->i_inode)->sd_sb.sb_bsize - sizeof(struct gfs2_dinode); |
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} |
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#endif /* __INCORE_DOT_H__ */ |
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