blob: 58b75abf6ab2f4e9e0c1b37752eba724a5b55b61 [file] [log] [blame]
David Teiglandb3b94fa2006-01-16 16:50:04 +00001/*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
Bob Peterson29d38cd2008-01-28 22:31:39 -06003 * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
David Teiglandb3b94fa2006-01-16 16:50:04 +00004 *
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
Steven Whitehousee9fc2aa2006-09-01 11:05:15 -04007 * of the GNU General Public License version 2.
David Teiglandb3b94fa2006-01-16 16:50:04 +00008 */
9
10#ifndef __INCORE_DOT_H__
11#define __INCORE_DOT_H__
12
Steven Whitehousef2f7ba52006-09-05 10:39:21 -040013#include <linux/fs.h>
Alexey Dobriyan57cc7212011-01-10 08:18:25 +020014#include <linux/kobject.h>
Benjamin Marzinskic4f68a12007-08-23 13:19:05 -050015#include <linux/workqueue.h>
Steven Whitehousef057f6c2009-01-12 10:43:39 +000016#include <linux/dlm.h>
17#include <linux/buffer_head.h>
Steven Whitehousebc015cb2011-01-19 09:30:01 +000018#include <linux/rcupdate.h>
19#include <linux/rculist_bl.h>
Steven Whitehouse3942ae52011-07-11 08:53:30 +010020#include <linux/completion.h>
Bob Peterson7c9ca622011-08-31 09:53:19 +010021#include <linux/rbtree.h>
Steven Whitehousea2457692012-01-20 10:38:36 +000022#include <linux/ktime.h>
23#include <linux/percpu.h>
Steven Whitehousee66cf162013-10-15 15:18:08 +010024#include <linux/lockref.h>
Steven Whitehousef2f7ba52006-09-05 10:39:21 -040025
David Teiglandb3b94fa2006-01-16 16:50:04 +000026#define DIO_WAIT 0x00000010
27#define DIO_METADATA 0x00000020
David Teiglandb3b94fa2006-01-16 16:50:04 +000028
29struct gfs2_log_operations;
Bob Petersonc0752aa2012-05-01 12:00:34 -040030struct gfs2_bufdata;
David Teiglandb3b94fa2006-01-16 16:50:04 +000031struct gfs2_holder;
32struct gfs2_glock;
David Teiglandb3b94fa2006-01-16 16:50:04 +000033struct gfs2_quota_data;
David Teiglandb3b94fa2006-01-16 16:50:04 +000034struct gfs2_trans;
David Teiglandb3b94fa2006-01-16 16:50:04 +000035struct gfs2_jdesc;
David Teiglandb3b94fa2006-01-16 16:50:04 +000036struct gfs2_sbd;
Steven Whitehousef057f6c2009-01-12 10:43:39 +000037struct lm_lockops;
David Teiglandb3b94fa2006-01-16 16:50:04 +000038
39typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret);
40
Steven Whitehousebb8d8a62007-06-01 14:11:58 +010041struct gfs2_log_header_host {
42 u64 lh_sequence; /* Sequence number of this transaction */
43 u32 lh_flags; /* GFS2_LOG_HEAD_... */
44 u32 lh_tail; /* Block number of log tail */
45 u32 lh_blkno;
46 u32 lh_hash;
47};
48
David Teiglandb3b94fa2006-01-16 16:50:04 +000049/*
50 * Structure of operations that are associated with each
51 * type of element in the log.
52 */
53
54struct gfs2_log_operations {
Steven Whitehoused69a3c62014-02-21 15:22:35 +000055 void (*lo_before_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
Benjamin Marzinski16ca9412013-04-05 20:31:46 -050056 void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
David Teiglandb3b94fa2006-01-16 16:50:04 +000057 void (*lo_before_scan) (struct gfs2_jdesc *jd,
Al Viro55167622006-10-13 21:47:13 -040058 struct gfs2_log_header_host *head, int pass);
David Teiglandb3b94fa2006-01-16 16:50:04 +000059 int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start,
60 struct gfs2_log_descriptor *ld, __be64 *ptr,
61 int pass);
62 void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass);
Steven Whitehouseb09e5932006-04-07 11:17:32 -040063 const char *lo_name;
David Teiglandb3b94fa2006-01-16 16:50:04 +000064};
65
Steven Whitehouse60a0b8f2009-05-21 12:23:12 +010066#define GBF_FULL 1
67
David Teiglandb3b94fa2006-01-16 16:50:04 +000068struct gfs2_bitmap {
69 struct buffer_head *bi_bh;
70 char *bi_clone;
Steven Whitehouse60a0b8f2009-05-21 12:23:12 +010071 unsigned long bi_flags;
Steven Whitehousecd915492006-09-04 12:49:07 -040072 u32 bi_offset;
73 u32 bi_start;
74 u32 bi_len;
Bob Peterson7e230f52013-09-11 13:44:02 -050075 u32 bi_blocks;
David Teiglandb3b94fa2006-01-16 16:50:04 +000076};
77
78struct gfs2_rgrpd {
Bob Peterson7c9ca622011-08-31 09:53:19 +010079 struct rb_node rd_node; /* Link with superblock */
David Teiglandb3b94fa2006-01-16 16:50:04 +000080 struct gfs2_glock *rd_gl; /* Glock for this rgrp */
Steven Whitehousebb8d8a62007-06-01 14:11:58 +010081 u64 rd_addr; /* grp block disk address */
82 u64 rd_data0; /* first data location */
83 u32 rd_length; /* length of rgrp header in fs blocks */
84 u32 rd_data; /* num of data blocks in rgrp */
85 u32 rd_bitbytes; /* number of bytes in data bitmaps */
Steven Whitehousecfc8b542008-11-04 10:25:13 +000086 u32 rd_free;
Bob Peterson8e2e0042012-07-19 08:12:40 -040087 u32 rd_reserved; /* number of blocks reserved */
Steven Whitehouse73f74942008-11-04 10:32:57 +000088 u32 rd_free_clone;
89 u32 rd_dinodes;
Steven Whitehoused8b71f72008-11-04 10:19:03 +000090 u64 rd_igeneration;
David Teiglandb3b94fa2006-01-16 16:50:04 +000091 struct gfs2_bitmap *rd_bits;
David Teiglandb3b94fa2006-01-16 16:50:04 +000092 struct gfs2_sbd *rd_sbd;
Benjamin Marzinski90306c42012-05-29 23:01:09 -050093 struct gfs2_rgrp_lvb *rd_rgl;
Steven Whitehouse73f74942008-11-04 10:32:57 +000094 u32 rd_last_alloc;
Steven Whitehouse1ce97e52009-05-21 15:18:19 +010095 u32 rd_flags;
Bob Peterson5ea50502013-11-25 11:16:25 +000096 u32 rd_extfail_pt; /* extent failure point */
Steven Whitehouse09010972009-05-20 10:48:47 +010097#define GFS2_RDF_CHECK 0x10000000 /* check for unlinked inodes */
98#define GFS2_RDF_UPTODATE 0x20000000 /* rg is up to date */
99#define GFS2_RDF_ERROR 0x40000000 /* error in rg */
Bob Peterson0e27c182014-10-29 08:02:28 -0500100#define GFS2_RDF_PREFERRED 0x80000000 /* This rgrp is preferred */
Steven Whitehouse09010972009-05-20 10:48:47 +0100101#define GFS2_RDF_MASK 0xf0000000 /* mask for internal flags */
Bob Peterson8e2e0042012-07-19 08:12:40 -0400102 spinlock_t rd_rsspin; /* protects reservation related vars */
103 struct rb_root rd_rstree; /* multi-block reservation tree */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000104};
105
Steven Whitehouse4a993fb2012-07-31 15:21:20 +0100106struct gfs2_rbm {
107 struct gfs2_rgrpd *rgd;
Steven Whitehouse4a993fb2012-07-31 15:21:20 +0100108 u32 offset; /* The offset is bitmap relative */
Bob Petersone579ed42013-09-17 13:12:15 -0400109 int bii; /* Bitmap index */
Steven Whitehouse4a993fb2012-07-31 15:21:20 +0100110};
111
Bob Petersone579ed42013-09-17 13:12:15 -0400112static inline struct gfs2_bitmap *rbm_bi(const struct gfs2_rbm *rbm)
113{
114 return rbm->rgd->rd_bits + rbm->bii;
115}
116
Steven Whitehouse4a993fb2012-07-31 15:21:20 +0100117static inline u64 gfs2_rbm_to_block(const struct gfs2_rbm *rbm)
118{
Bob Petersone579ed42013-09-17 13:12:15 -0400119 return rbm->rgd->rd_data0 + (rbm_bi(rbm)->bi_start * GFS2_NBBY) +
120 rbm->offset;
Steven Whitehouse4a993fb2012-07-31 15:21:20 +0100121}
122
Steven Whitehouse5b924ae2012-08-01 20:35:05 +0100123static inline bool gfs2_rbm_eq(const struct gfs2_rbm *rbm1,
124 const struct gfs2_rbm *rbm2)
125{
Bob Petersone579ed42013-09-17 13:12:15 -0400126 return (rbm1->rgd == rbm2->rgd) && (rbm1->bii == rbm2->bii) &&
Steven Whitehouse5b924ae2012-08-01 20:35:05 +0100127 (rbm1->offset == rbm2->offset);
128}
129
David Teiglandb3b94fa2006-01-16 16:50:04 +0000130enum gfs2_state_bits {
131 BH_Pinned = BH_PrivateStart,
Steven Whitehousef42faf42006-01-30 18:34:10 +0000132 BH_Escaped = BH_PrivateStart + 1,
Benjamin Marzinski64dd1532011-09-12 18:15:24 -0500133 BH_Zeronew = BH_PrivateStart + 2,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000134};
135
136BUFFER_FNS(Pinned, pinned)
137TAS_BUFFER_FNS(Pinned, pinned)
Steven Whitehousef42faf42006-01-30 18:34:10 +0000138BUFFER_FNS(Escaped, escaped)
139TAS_BUFFER_FNS(Escaped, escaped)
Benjamin Marzinski64dd1532011-09-12 18:15:24 -0500140BUFFER_FNS(Zeronew, zeronew)
141TAS_BUFFER_FNS(Zeronew, zeronew)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000142
143struct gfs2_bufdata {
144 struct buffer_head *bd_bh;
145 struct gfs2_glock *bd_gl;
Steven Whitehousec50b91c2012-04-16 16:40:56 +0100146 u64 bd_blkno;
Steven Whitehouse82e86082007-09-02 15:39:43 +0100147
Bob Petersonc0752aa2012-05-01 12:00:34 -0400148 struct list_head bd_list;
149 const struct gfs2_log_operations *bd_ops;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000150
Benjamin Marzinski16ca9412013-04-05 20:31:46 -0500151 struct gfs2_trans *bd_tr;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000152 struct list_head bd_ail_st_list;
153 struct list_head bd_ail_gl_list;
154};
155
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000156/*
157 * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a
158 * prefix of lock_dlm_ gets awkward.
159 */
160
161#define GDLM_STRNAME_BYTES 25
162#define GDLM_LVB_SIZE 32
163
David Teiglande0c2a9a2012-01-09 17:18:05 -0500164/*
165 * ls_recover_flags:
166 *
167 * DFL_BLOCK_LOCKS: dlm is in recovery and will grant locks that had been
168 * held by failed nodes whose journals need recovery. Those locks should
169 * only be used for journal recovery until the journal recovery is done.
170 * This is set by the dlm recover_prep callback and cleared by the
171 * gfs2_control thread when journal recovery is complete. To avoid
172 * races between recover_prep setting and gfs2_control clearing, recover_spin
173 * is held while changing this bit and reading/writing recover_block
174 * and recover_start.
175 *
176 * DFL_NO_DLM_OPS: dlm lockspace ops/callbacks are not being used.
177 *
178 * DFL_FIRST_MOUNT: this node is the first to mount this fs and is doing
179 * recovery of all journals before allowing other nodes to mount the fs.
180 * This is cleared when FIRST_MOUNT_DONE is set.
181 *
182 * DFL_FIRST_MOUNT_DONE: this node was the first mounter, and has finished
183 * recovery of all journals, and now allows other nodes to mount the fs.
184 *
185 * DFL_MOUNT_DONE: gdlm_mount has completed successfully and cleared
186 * BLOCK_LOCKS for the first time. The gfs2_control thread should now
187 * control clearing BLOCK_LOCKS for further recoveries.
188 *
189 * DFL_UNMOUNT: gdlm_unmount sets to keep sdp off gfs2_control_wq.
190 *
191 * DFL_DLM_RECOVERY: set while dlm is in recovery, between recover_prep()
192 * and recover_done(), i.e. set while recover_block == recover_start.
193 */
194
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000195enum {
196 DFL_BLOCK_LOCKS = 0,
David Teiglande0c2a9a2012-01-09 17:18:05 -0500197 DFL_NO_DLM_OPS = 1,
198 DFL_FIRST_MOUNT = 2,
199 DFL_FIRST_MOUNT_DONE = 3,
200 DFL_MOUNT_DONE = 4,
201 DFL_UNMOUNT = 5,
202 DFL_DLM_RECOVERY = 6,
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000203};
204
205struct lm_lockname {
206 u64 ln_number;
207 unsigned int ln_type;
208};
209
210#define lm_name_equal(name1, name2) \
211 (((name1)->ln_number == (name2)->ln_number) && \
212 ((name1)->ln_type == (name2)->ln_type))
213
214
David Teiglandb3b94fa2006-01-16 16:50:04 +0000215struct gfs2_glock_operations {
Bob Peterson06dfc302012-10-24 14:41:05 -0400216 void (*go_sync) (struct gfs2_glock *gl);
Steven Whitehouse6802e342008-05-21 17:03:22 +0100217 int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh);
Steven Whitehouse1a14d3a2006-11-20 10:37:45 -0500218 void (*go_inval) (struct gfs2_glock *gl, int flags);
Steven Whitehouse97cc10252008-11-20 13:39:47 +0000219 int (*go_demote_ok) (const struct gfs2_glock *gl);
Steven Whitehouse1a14d3a2006-11-20 10:37:45 -0500220 int (*go_lock) (struct gfs2_holder *gh);
221 void (*go_unlock) (struct gfs2_holder *gh);
Steven Whitehouseac3beb62014-01-16 10:31:13 +0000222 void (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl);
Steven Whitehouse81ffbf62013-04-10 10:26:55 +0100223 void (*go_callback)(struct gfs2_glock *gl, bool remote);
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400224 const int go_type;
Steven Whitehouse009d8512009-12-08 12:12:13 +0000225 const unsigned long go_flags;
226#define GLOF_ASPACE 1
David Teiglanddba2d702012-11-14 13:46:53 -0500227#define GLOF_LVB 2
David Teiglandb3b94fa2006-01-16 16:50:04 +0000228};
229
230enum {
Steven Whitehousea2457692012-01-20 10:38:36 +0000231 GFS2_LKS_SRTT = 0, /* Non blocking smoothed round trip time */
232 GFS2_LKS_SRTTVAR = 1, /* Non blocking smoothed variance */
233 GFS2_LKS_SRTTB = 2, /* Blocking smoothed round trip time */
234 GFS2_LKS_SRTTVARB = 3, /* Blocking smoothed variance */
235 GFS2_LKS_SIRT = 4, /* Smoothed Inter-request time */
236 GFS2_LKS_SIRTVAR = 5, /* Smoothed Inter-request variance */
237 GFS2_LKS_DCOUNT = 6, /* Count of dlm requests */
238 GFS2_LKS_QCOUNT = 7, /* Count of gfs2_holder queues */
239 GFS2_NR_LKSTATS
240};
241
242struct gfs2_lkstats {
243 s64 stats[GFS2_NR_LKSTATS];
244};
245
246enum {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000247 /* States */
Steven Whitehouse6802e342008-05-21 17:03:22 +0100248 HIF_HOLDER = 6, /* Set for gh that "holds" the glock */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000249 HIF_FIRST = 7,
Steven Whitehousefee852e2007-01-17 15:33:23 +0000250 HIF_WAIT = 10,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000251};
252
253struct gfs2_holder {
254 struct list_head gh_list;
255
256 struct gfs2_glock *gh_gl;
Pavel Emelyanovb1e058d2008-02-07 00:13:19 -0800257 struct pid *gh_owner_pid;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000258 unsigned int gh_state;
Steven Whitehousefe1bded2006-04-18 10:09:15 -0400259 unsigned gh_flags;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000260
261 int gh_error;
Steven Whitehouse6802e342008-05-21 17:03:22 +0100262 unsigned long gh_iflags; /* HIF_... */
Steven Whitehoused0dc80d2006-03-29 14:36:49 -0500263 unsigned long gh_ip;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000264};
265
Jan Karaa937cca2014-09-10 21:22:51 +0200266/* Number of quota types we support */
267#define GFS2_MAXQUOTAS 2
268
Bob Peterson8e2e0042012-07-19 08:12:40 -0400269/* Resource group multi-block reservation, in order of appearance:
270
271 Step 1. Function prepares to write, allocates a mb, sets the size hint.
272 Step 2. User calls inplace_reserve to target an rgrp, sets the rgrp info
273 Step 3. Function get_local_rgrp locks the rgrp, determines which bits to use
274 Step 4. Bits are assigned from the rgrp based on either the reservation
275 or wherever it can.
276*/
277
278struct gfs2_blkreserv {
279 /* components used during write (step 1): */
280 atomic_t rs_sizehint; /* hint of the write size */
281
Bob Peterson8e2e0042012-07-19 08:12:40 -0400282 struct gfs2_holder rs_rgd_gh; /* Filled in by get_local_rgrp */
283 struct rb_node rs_node; /* link to other block reservations */
Steven Whitehouse9e733d32012-08-23 15:37:59 +0100284 struct gfs2_rbm rs_rbm; /* Start of reservation */
Bob Peterson8e2e0042012-07-19 08:12:40 -0400285 u32 rs_free; /* how many blocks are still free */
Steven Whitehouse9e733d32012-08-23 15:37:59 +0100286 u64 rs_inum; /* Inode number for reservation */
Bob Peterson8e2e0042012-07-19 08:12:40 -0400287
288 /* ancillary quota stuff */
Jan Karaa937cca2014-09-10 21:22:51 +0200289 struct gfs2_quota_data *rs_qa_qd[2 * GFS2_MAXQUOTAS];
290 struct gfs2_holder rs_qa_qd_ghs[2 * GFS2_MAXQUOTAS];
Bob Peterson8e2e0042012-07-19 08:12:40 -0400291 unsigned int rs_qa_qd_num;
292};
293
Steven Whitehouse7b9cff42013-10-02 11:13:25 +0100294/*
295 * Allocation parameters
296 * @target: The number of blocks we'd ideally like to allocate
297 * @aflags: The flags (e.g. Orlov flag)
298 *
299 * The intent is to gradually expand this structure over time in
300 * order to give more information, e.g. alignment, min extent size
301 * to the allocation code.
302 */
303struct gfs2_alloc_parms {
Abhi Dasb8fbf472015-03-18 12:03:41 -0500304 u64 target;
Abhi Das25435e52015-03-18 12:04:37 -0500305 u32 min_target;
Steven Whitehouse7b9cff42013-10-02 11:13:25 +0100306 u32 aflags;
Abhi Das25435e52015-03-18 12:04:37 -0500307 u64 allowed;
Steven Whitehouse7b9cff42013-10-02 11:13:25 +0100308};
309
David Teiglandb3b94fa2006-01-16 16:50:04 +0000310enum {
Steven Whitehouse6802e342008-05-21 17:03:22 +0100311 GLF_LOCK = 1,
Steven Whitehouse6802e342008-05-21 17:03:22 +0100312 GLF_DEMOTE = 3,
313 GLF_PENDING_DEMOTE = 4,
314 GLF_DEMOTE_IN_PROGRESS = 5,
315 GLF_DIRTY = 6,
316 GLF_LFLUSH = 7,
317 GLF_INVALIDATE_IN_PROGRESS = 8,
318 GLF_REPLY_PENDING = 9,
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000319 GLF_INITIAL = 10,
320 GLF_FROZEN = 11,
Steven Whitehouse7b5e3d52010-09-03 09:39:20 +0100321 GLF_QUEUED = 12,
Steven Whitehouse627c10b2011-04-14 14:09:52 +0100322 GLF_LRU = 13,
323 GLF_OBJECT = 14, /* Used only for tracing */
Steven Whitehousea2457692012-01-20 10:38:36 +0000324 GLF_BLOCKING = 15,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000325};
326
327struct gfs2_glock {
Steven Whitehousebc015cb2011-01-19 09:30:01 +0000328 struct hlist_bl_node gl_list;
Steven Whitehousea2457692012-01-20 10:38:36 +0000329 struct gfs2_sbd *gl_sbd;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000330 unsigned long gl_flags; /* GLF_... */
331 struct lm_lockname gl_name;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000332
Steven Whitehousee66cf162013-10-15 15:18:08 +0100333 struct lockref gl_lockref;
334#define gl_spin gl_lockref.lock
David Teiglandb3b94fa2006-01-16 16:50:04 +0000335
Steven Whitehouse47a25382010-11-30 15:49:31 +0000336 /* State fields protected by gl_spin */
337 unsigned int gl_state:2, /* Current state */
338 gl_target:2, /* Target state */
339 gl_demote_state:2, /* State requested by remote node */
340 gl_req:2, /* State in last dlm request */
341 gl_reply:8; /* Last reply from the dlm */
342
Steven Whitehouse37b2fa62006-09-08 13:35:56 -0400343 unsigned int gl_hash;
Steven Whitehouse3b8249f2007-03-16 09:40:31 +0000344 unsigned long gl_demote_time; /* time of first demote request */
Bob Peterson7cf8dcd2011-06-15 11:41:48 -0400345 long gl_hold_time;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000346 struct list_head gl_holders;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000347
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400348 const struct gfs2_glock_operations *gl_ops;
Steven Whitehousea2457692012-01-20 10:38:36 +0000349 ktime_t gl_dstamp;
350 struct gfs2_lkstats gl_stats;
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000351 struct dlm_lksb gl_lksb;
Benjamin Marzinskic4f68a12007-08-23 13:19:05 -0500352 unsigned long gl_tchange;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000353 void *gl_object;
354
Steven Whitehouse97cc10252008-11-20 13:39:47 +0000355 struct list_head gl_lru;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000356 struct list_head gl_ail_list;
357 atomic_t gl_ail_count;
Steven Whitehousef42ab082011-04-14 16:50:31 +0100358 atomic_t gl_revokes;
Benjamin Marzinskic4f68a12007-08-23 13:19:05 -0500359 struct delayed_work gl_work;
Steven Whitehouse7005c3e2013-12-06 10:16:14 +0000360 union {
361 /* For inode and iopen glocks only */
362 struct work_struct gl_delete;
363 /* For rgrp glocks only */
364 struct {
365 loff_t start;
366 loff_t end;
367 } gl_vm;
368 };
Steven Whitehousebc015cb2011-01-19 09:30:01 +0000369 struct rcu_head gl_rcu;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000370};
371
Steven Whitehouseda755fd2008-01-30 15:34:04 +0000372#define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */
373
David Teiglandb3b94fa2006-01-16 16:50:04 +0000374enum {
Steven Whitehousebfded272006-11-01 16:05:38 -0500375 GIF_INVALID = 0,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000376 GIF_QD_LOCKED = 1,
Steven Whitehouse40ac2182011-08-02 13:17:27 +0100377 GIF_ALLOC_FAILED = 2,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000378 GIF_SW_PAGED = 3,
Steven Whitehouse45138992013-01-28 09:30:07 +0000379 GIF_ORDERED = 4,
Abhi Das05978802014-03-31 10:33:17 -0500380 GIF_FREE_VFS_INODE = 5,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000381};
382
383struct gfs2_inode {
Steven Whitehouse320dd102006-05-18 16:25:27 -0400384 struct inode i_inode;
Steven Whitehousedbb7cae2007-05-15 15:37:50 +0100385 u64 i_no_addr;
386 u64 i_no_formal_ino;
Steven Whitehousebcf0b5b2008-11-03 13:39:46 +0000387 u64 i_generation;
Steven Whitehouse3767ac22008-11-03 14:28:42 +0000388 u64 i_eattr;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000389 unsigned long i_flags; /* GIF_... */
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400390 struct gfs2_glock *i_gl; /* Move into i_gh? */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000391 struct gfs2_holder i_iopen_gh;
Steven Whitehousef42faf42006-01-30 18:34:10 +0000392 struct gfs2_holder i_gh; /* for prepare/commit_write only */
Bob Peterson8e2e0042012-07-19 08:12:40 -0400393 struct gfs2_blkreserv *i_res; /* rgrp multi-block reservation */
Steven Whitehouse54335b12011-09-01 13:31:59 +0100394 struct gfs2_rgrpd *i_rgd;
Steven Whitehousece276b02008-02-06 09:25:45 +0000395 u64 i_goal; /* goal block for allocations */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000396 struct rw_semaphore i_rw_mutex;
Steven Whitehouse45138992013-01-28 09:30:07 +0000397 struct list_head i_ordered;
Steven Whitehouse813e0c42008-11-18 13:38:48 +0000398 struct list_head i_trunc_list;
Steven Whitehouse17d539f2011-06-15 10:29:37 +0100399 __be64 *i_hash_cache;
Steven Whitehousead6203f2008-11-03 13:59:19 +0000400 u32 i_entries;
Steven Whitehouse383f01f2008-11-04 10:05:22 +0000401 u32 i_diskflags;
Steven Whitehouseecc30c72008-01-28 10:37:35 +0000402 u8 i_height;
Steven Whitehouse9a004502008-02-01 09:23:44 +0000403 u8 i_depth;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000404};
405
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400406/*
407 * Since i_inode is the first element of struct gfs2_inode,
408 * this is effectively a cast.
409 */
Steven Whitehouse320dd102006-05-18 16:25:27 -0400410static inline struct gfs2_inode *GFS2_I(struct inode *inode)
411{
412 return container_of(inode, struct gfs2_inode, i_inode);
413}
414
Steven Whitehousebf36a712007-10-17 08:35:19 +0100415static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode)
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400416{
417 return inode->i_sb->s_fs_info;
418}
419
David Teiglandb3b94fa2006-01-16 16:50:04 +0000420struct gfs2_file {
Steven Whitehousef55ab262006-02-21 12:51:39 +0000421 struct mutex f_fl_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000422 struct gfs2_holder f_fl_gh;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000423};
424
David Teiglandb3b94fa2006-01-16 16:50:04 +0000425struct gfs2_revoke_replay {
426 struct list_head rr_list;
Steven Whitehousecd915492006-09-04 12:49:07 -0400427 u64 rr_blkno;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000428 unsigned int rr_where;
429};
430
431enum {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000432 QDF_CHANGE = 1,
433 QDF_LOCKED = 2,
Abhijith Das662e3a52011-03-08 10:40:42 -0500434 QDF_REFRESH = 3,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000435};
436
437struct gfs2_quota_data {
Steven Whitehousec754fbb2013-12-12 10:47:59 +0000438 struct hlist_bl_node qd_hlist;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000439 struct list_head qd_list;
Eric W. Biederman05e0a602013-01-31 19:52:08 -0800440 struct kqid qd_id;
Steven Whitehousec754fbb2013-12-12 10:47:59 +0000441 struct gfs2_sbd *qd_sbd;
Steven Whitehouse2147dbf2013-11-04 10:15:08 +0000442 struct lockref qd_lockref;
443 struct list_head qd_lru;
Steven Whitehousec754fbb2013-12-12 10:47:59 +0000444 unsigned qd_hash;
Steven Whitehouse2147dbf2013-11-04 10:15:08 +0000445
David Teiglandb3b94fa2006-01-16 16:50:04 +0000446 unsigned long qd_flags; /* QDF_... */
447
Steven Whitehousecd915492006-09-04 12:49:07 -0400448 s64 qd_change;
449 s64 qd_change_sync;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000450
451 unsigned int qd_slot;
452 unsigned int qd_slot_count;
453
454 struct buffer_head *qd_bh;
455 struct gfs2_quota_change *qd_bh_qc;
456 unsigned int qd_bh_count;
457
458 struct gfs2_glock *qd_gl;
459 struct gfs2_quota_lvb qd_qb;
460
Steven Whitehousecd915492006-09-04 12:49:07 -0400461 u64 qd_sync_gen;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000462 unsigned long qd_last_warn;
Steven Whitehousec754fbb2013-12-12 10:47:59 +0000463 struct rcu_head qd_rcu;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000464};
465
David Teiglandb3b94fa2006-01-16 16:50:04 +0000466struct gfs2_trans {
Steven Whitehoused0dc80d2006-03-29 14:36:49 -0500467 unsigned long tr_ip;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000468
469 unsigned int tr_blocks;
470 unsigned int tr_revokes;
471 unsigned int tr_reserved;
Steven Whitehouse654a6d22014-02-21 11:52:00 +0000472 unsigned int tr_touched:1;
473 unsigned int tr_attached:1;
Benjamin Marzinski24972552014-05-01 22:26:55 -0500474 unsigned int tr_alloced:1;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000475
David Teiglandb3b94fa2006-01-16 16:50:04 +0000476 unsigned int tr_num_buf_new;
Robert Peterson2332c442007-06-18 14:50:20 -0500477 unsigned int tr_num_databuf_new;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000478 unsigned int tr_num_buf_rm;
Robert Peterson2332c442007-06-18 14:50:20 -0500479 unsigned int tr_num_databuf_rm;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000480 unsigned int tr_num_revoke;
481 unsigned int tr_num_revoke_rm;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000482
Benjamin Marzinski16ca9412013-04-05 20:31:46 -0500483 struct list_head tr_list;
Steven Whitehoused69a3c62014-02-21 15:22:35 +0000484 struct list_head tr_databuf;
485 struct list_head tr_buf;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000486
Benjamin Marzinski16ca9412013-04-05 20:31:46 -0500487 unsigned int tr_first;
488 struct list_head tr_ail1_list;
489 struct list_head tr_ail2_list;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000490};
491
Bob Petersonda6dd402007-12-11 18:49:21 -0600492struct gfs2_journal_extent {
Steven Whitehouseb50f2272014-03-03 13:35:57 +0000493 struct list_head list;
Bob Petersonda6dd402007-12-11 18:49:21 -0600494
495 unsigned int lblock; /* First logical block */
496 u64 dblock; /* First disk block */
497 u64 blocks;
498};
499
David Teiglandb3b94fa2006-01-16 16:50:04 +0000500struct gfs2_jdesc {
501 struct list_head jd_list;
Bob Petersonda6dd402007-12-11 18:49:21 -0600502 struct list_head extent_list;
Steven Whitehouseb50f2272014-03-03 13:35:57 +0000503 unsigned int nr_extents;
Tejun Heo6ecd7c22010-07-20 22:09:02 +0200504 struct work_struct jd_work;
Steven Whitehouse7359a192006-02-13 12:27:43 +0000505 struct inode *jd_inode;
Steven Whitehousefe64d512009-05-19 10:01:18 +0100506 unsigned long jd_flags;
507#define JDF_RECOVERY 1
David Teiglandb3b94fa2006-01-16 16:50:04 +0000508 unsigned int jd_jid;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000509 unsigned int jd_blocks;
David Teigland376d3772012-01-09 15:29:20 -0500510 int jd_recover_error;
Bob Petersona17d7582014-03-06 17:19:15 -0500511 /* Replay stuff */
512
513 unsigned int jd_found_blocks;
514 unsigned int jd_found_revokes;
515 unsigned int jd_replayed_blocks;
516
517 struct list_head jd_revoke_list;
518 unsigned int jd_replay_tail;
519
David Teiglandb3b94fa2006-01-16 16:50:04 +0000520};
521
Steven Whitehousebb8d8a62007-06-01 14:11:58 +0100522struct gfs2_statfs_change_host {
523 s64 sc_total;
524 s64 sc_free;
525 s64 sc_dinodes;
526};
527
David Teiglandb3b94fa2006-01-16 16:50:04 +0000528#define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
529#define GFS2_QUOTA_OFF 0
530#define GFS2_QUOTA_ACCOUNT 1
531#define GFS2_QUOTA_ON 2
532
533#define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
534#define GFS2_DATA_WRITEBACK 1
535#define GFS2_DATA_ORDERED 2
536
Bob Petersond34843d2009-08-24 10:44:18 +0100537#define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW
538#define GFS2_ERRORS_WITHDRAW 0
539#define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */
540#define GFS2_ERRORS_RO 2 /* place holder for future feature */
541#define GFS2_ERRORS_PANIC 3
542
David Teiglandb3b94fa2006-01-16 16:50:04 +0000543struct gfs2_args {
Steven Whitehouse37ec89e2008-09-18 13:49:32 +0100544 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
545 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
546 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
547 unsigned int ar_spectator:1; /* Don't get a journal */
Steven Whitehouse37ec89e2008-09-18 13:49:32 +0100548 unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */
Steven Whitehouse37ec89e2008-09-18 13:49:32 +0100549 unsigned int ar_debug:1; /* Oops on errors */
Steven Whitehouse37ec89e2008-09-18 13:49:32 +0100550 unsigned int ar_posix_acl:1; /* Enable posix acls */
551 unsigned int ar_quota:2; /* off/account/on */
552 unsigned int ar_suiddir:1; /* suiddir support */
553 unsigned int ar_data:2; /* ordered/writeback */
554 unsigned int ar_meta:1; /* mount metafs */
Steven Whitehousef15ab562009-02-09 09:25:01 +0000555 unsigned int ar_discard:1; /* discard requests */
Bob Petersond34843d2009-08-24 10:44:18 +0100556 unsigned int ar_errors:2; /* errors=withdraw | panic */
Christoph Hellwigf25934c2009-10-30 08:03:27 +0100557 unsigned int ar_nobarrier:1; /* do not send barriers */
Benjamin Marzinski90306c42012-05-29 23:01:09 -0500558 unsigned int ar_rgrplvb:1; /* use lvbs for rgrp info */
Steven Whitehouse48c2b612009-05-13 14:49:48 +0100559 int ar_commit; /* Commit interval */
Benjamin Marzinski3d3c10f2009-10-20 02:39:44 -0500560 int ar_statfs_quantum; /* The fast statfs interval */
561 int ar_quota_quantum; /* The quota interval */
562 int ar_statfs_percent; /* The % change to force sync */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000563};
564
565struct gfs2_tune {
566 spinlock_t gt_spin;
567
David Teiglandb3b94fa2006-01-16 16:50:04 +0000568 unsigned int gt_logd_secs;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000569
David Teiglandb3b94fa2006-01-16 16:50:04 +0000570 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
571 unsigned int gt_quota_scale_num; /* Numerator */
572 unsigned int gt_quota_scale_den; /* Denominator */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000573 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000574 unsigned int gt_new_files_jdata;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000575 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000576 unsigned int gt_complain_secs;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000577 unsigned int gt_statfs_quantum;
578 unsigned int gt_statfs_slow;
579};
580
David Teiglandb3b94fa2006-01-16 16:50:04 +0000581enum {
582 SDF_JOURNAL_CHECKED = 0,
583 SDF_JOURNAL_LIVE = 1,
584 SDF_SHUTDOWN = 2,
Steven Whitehouse254db572008-09-26 10:23:22 +0100585 SDF_NOBARRIERS = 3,
Steven Whitehousefe64d512009-05-19 10:01:18 +0100586 SDF_NORECOVERY = 4,
Steven Whitehouse913a71d2010-05-06 11:03:29 +0100587 SDF_DEMOTE = 5,
Steven Whitehouseba6e9362010-06-14 10:01:30 +0100588 SDF_NOJOURNALID = 6,
David Teiglande8ca5cc2012-01-09 14:40:06 -0500589 SDF_RORECOVERY = 7, /* read only recovery */
David Teiglandfb6791d2012-11-13 10:58:56 -0500590 SDF_SKIP_DLM_UNLOCK = 8,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000591};
592
Benjamin Marzinski2e60d762014-11-13 20:42:04 -0600593enum gfs2_freeze_state {
594 SFS_UNFROZEN = 0,
595 SFS_STARTING_FREEZE = 1,
596 SFS_FROZEN = 2,
597};
598
David Teiglandb3b94fa2006-01-16 16:50:04 +0000599#define GFS2_FSNAME_LEN 256
600
Steven Whitehousebb8d8a62007-06-01 14:11:58 +0100601struct gfs2_inum_host {
602 u64 no_formal_ino;
603 u64 no_addr;
604};
605
606struct gfs2_sb_host {
607 u32 sb_magic;
608 u32 sb_type;
609 u32 sb_format;
610
611 u32 sb_fs_format;
612 u32 sb_multihost_format;
613 u32 sb_bsize;
614 u32 sb_bsize_shift;
615
616 struct gfs2_inum_host sb_master_dir;
617 struct gfs2_inum_host sb_root_dir;
618
619 char sb_lockproto[GFS2_LOCKNAME_LEN];
620 char sb_locktable[GFS2_LOCKNAME_LEN];
621};
622
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000623/*
624 * lm_mount() return values
625 *
626 * ls_jid - the journal ID this node should use
627 * ls_first - this node is the first to mount the file system
628 * ls_lockspace - lock module's context for this file system
629 * ls_ops - lock module's functions
630 */
631
632struct lm_lockstruct {
Steven Whitehousefeb47ca92010-09-29 15:04:18 +0100633 int ls_jid;
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000634 unsigned int ls_first;
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000635 const struct lm_lockops *ls_ops;
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000636 dlm_lockspace_t *ls_dlm;
637
David Teiglande0c2a9a2012-01-09 17:18:05 -0500638 int ls_recover_jid_done; /* These two are deprecated, */
639 int ls_recover_jid_status; /* used previously by gfs_controld */
640
641 struct dlm_lksb ls_mounted_lksb; /* mounted_lock */
642 struct dlm_lksb ls_control_lksb; /* control_lock */
643 char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */
644 struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */
David Teigland57c73102013-03-05 16:01:47 -0500645 char *ls_lvb_bits;
David Teiglande0c2a9a2012-01-09 17:18:05 -0500646
647 spinlock_t ls_recover_spin; /* protects following fields */
648 unsigned long ls_recover_flags; /* DFL_ */
649 uint32_t ls_recover_mount; /* gen in first recover_done cb */
650 uint32_t ls_recover_start; /* gen in last recover_done cb */
651 uint32_t ls_recover_block; /* copy recover_start in last recover_prep */
652 uint32_t ls_recover_size; /* size of recover_submit, recover_result */
653 uint32_t *ls_recover_submit; /* gen in last recover_slot cb per jid */
654 uint32_t *ls_recover_result; /* result of last jid recovery */
Steven Whitehousef057f6c2009-01-12 10:43:39 +0000655};
656
Steven Whitehousea2457692012-01-20 10:38:36 +0000657struct gfs2_pcpu_lkstats {
658 /* One struct for each glock type */
659 struct gfs2_lkstats lkstats[10];
660};
661
David Teiglandb3b94fa2006-01-16 16:50:04 +0000662struct gfs2_sbd {
663 struct super_block *sd_vfs;
Steven Whitehousea2457692012-01-20 10:38:36 +0000664 struct gfs2_pcpu_lkstats __percpu *sd_lkstats;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000665 struct kobject sd_kobj;
666 unsigned long sd_flags; /* SDF_... */
Al Virof50dfaf2006-10-13 20:45:02 -0400667 struct gfs2_sb_host sd_sb;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000668
669 /* Constants computed on mount */
670
Steven Whitehousecd915492006-09-04 12:49:07 -0400671 u32 sd_fsb2bb;
672 u32 sd_fsb2bb_shift;
673 u32 sd_diptrs; /* Number of pointers in a dinode */
674 u32 sd_inptrs; /* Number of pointers in a indirect block */
675 u32 sd_jbsize; /* Size of a journaled data block */
676 u32 sd_hash_bsize; /* sizeof(exhash block) */
677 u32 sd_hash_bsize_shift;
678 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
679 u32 sd_qc_per_block;
Bob Petersona68a0a32012-10-19 08:32:51 -0400680 u32 sd_blocks_per_bitmap;
Steven Whitehousecd915492006-09-04 12:49:07 -0400681 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
682 u32 sd_max_height; /* Max height of a file's metadata tree */
Steven Whitehouseecc30c72008-01-28 10:37:35 +0000683 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1];
Steven Whitehousecd915492006-09-04 12:49:07 -0400684 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
Steven Whitehouseecc30c72008-01-28 10:37:35 +0000685 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1];
David Teiglandb3b94fa2006-01-16 16:50:04 +0000686
687 struct gfs2_args sd_args; /* Mount arguments */
688 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
689
690 /* Lock Stuff */
691
692 struct lm_lockstruct sd_lockstruct;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000693 struct gfs2_holder sd_live_gh;
694 struct gfs2_glock *sd_rename_gl;
Benjamin Marzinski24972552014-05-01 22:26:55 -0500695 struct gfs2_glock *sd_freeze_gl;
Benjamin Marzinski2e60d762014-11-13 20:42:04 -0600696 struct work_struct sd_freeze_work;
Steven Whitehousee4027462010-01-25 11:20:19 +0000697 wait_queue_head_t sd_glock_wait;
698 atomic_t sd_glock_disposal;
Steven Whitehouse3942ae52011-07-11 08:53:30 +0100699 struct completion sd_locking_init;
Steven Whitehousefd95e812013-02-13 12:21:40 +0000700 struct completion sd_wdack;
David Teiglande0c2a9a2012-01-09 17:18:05 -0500701 struct delayed_work sd_control_work;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000702
703 /* Inode Stuff */
704
Steven Whitehouse9b8df982008-08-08 13:45:13 +0100705 struct dentry *sd_master_dir;
706 struct dentry *sd_root_dir;
707
Steven Whitehousef42faf42006-01-30 18:34:10 +0000708 struct inode *sd_jindex;
Steven Whitehousef42faf42006-01-30 18:34:10 +0000709 struct inode *sd_statfs_inode;
Steven Whitehousef42faf42006-01-30 18:34:10 +0000710 struct inode *sd_sc_inode;
Steven Whitehousef42faf42006-01-30 18:34:10 +0000711 struct inode *sd_qc_inode;
712 struct inode *sd_rindex;
713 struct inode *sd_quota_inode;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000714
David Teiglandb3b94fa2006-01-16 16:50:04 +0000715 /* StatFS stuff */
716
717 spinlock_t sd_statfs_spin;
Al Virobd209cc2006-10-13 23:43:19 -0400718 struct gfs2_statfs_change_host sd_statfs_master;
719 struct gfs2_statfs_change_host sd_statfs_local;
Benjamin Marzinski3d3c10f2009-10-20 02:39:44 -0500720 int sd_statfs_force_sync;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000721
722 /* Resource group stuff */
723
Bob Petersoncf45b752008-01-31 10:31:39 -0600724 int sd_rindex_uptodate;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000725 spinlock_t sd_rindex_spin;
Bob Peterson7c9ca622011-08-31 09:53:19 +0100726 struct rb_root sd_rindex_tree;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000727 unsigned int sd_rgrps;
Benjamin Marzinski39211202010-08-20 00:21:02 -0500728 unsigned int sd_max_rg_data;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000729
730 /* Journal index stuff */
731
732 struct list_head sd_jindex_list;
733 spinlock_t sd_jindex_spin;
Steven Whitehousef55ab262006-02-21 12:51:39 +0000734 struct mutex sd_jindex_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000735 unsigned int sd_journals;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000736
737 struct gfs2_jdesc *sd_jdesc;
738 struct gfs2_holder sd_journal_gh;
739 struct gfs2_holder sd_jinode_gh;
740
David Teiglandb3b94fa2006-01-16 16:50:04 +0000741 struct gfs2_holder sd_sc_gh;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000742 struct gfs2_holder sd_qc_gh;
743
Bob Peterson0e48e0552014-06-02 09:40:25 -0400744 struct completion sd_journal_ready;
745
David Teiglandb3b94fa2006-01-16 16:50:04 +0000746 /* Daemon stuff */
747
David Teiglandb3b94fa2006-01-16 16:50:04 +0000748 struct task_struct *sd_logd_process;
749 struct task_struct *sd_quotad_process;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000750
David Teiglandb3b94fa2006-01-16 16:50:04 +0000751 /* Quota stuff */
752
753 struct list_head sd_quota_list;
754 atomic_t sd_quota_count;
Steven Whitehousef55ab262006-02-21 12:51:39 +0000755 struct mutex sd_quota_mutex;
Steven Whitehousee46c7722013-10-04 12:29:34 +0100756 struct mutex sd_quota_sync_mutex;
Steven Whitehouse37b2c832008-11-17 14:25:37 +0000757 wait_queue_head_t sd_quota_wait;
Steven Whitehouse813e0c42008-11-18 13:38:48 +0000758 struct list_head sd_trunc_list;
759 spinlock_t sd_trunc_lock;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000760
761 unsigned int sd_quota_slots;
Steven Whitehouseee2411a2013-12-12 17:29:32 +0000762 unsigned long *sd_quota_bitmap;
Steven Whitehouse2d9e7232013-12-13 11:46:28 +0000763 spinlock_t sd_bitmap_lock;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000764
Steven Whitehousecd915492006-09-04 12:49:07 -0400765 u64 sd_quota_sync_gen;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000766
767 /* Log stuff */
768
Steven Whitehouse70d4ee92013-12-06 16:19:54 +0000769 struct address_space sd_aspace;
770
David Teiglandb3b94fa2006-01-16 16:50:04 +0000771 spinlock_t sd_log_lock;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000772
Benjamin Marzinski16ca9412013-04-05 20:31:46 -0500773 struct gfs2_trans *sd_log_tr;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000774 unsigned int sd_log_blks_reserved;
Benjamin Marzinski2e95e3f2010-03-10 18:10:19 -0600775 int sd_log_commited_revoke;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000776
Benjamin Marzinski5e687ea2010-05-04 14:29:16 -0500777 atomic_t sd_log_pinned;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000778 unsigned int sd_log_num_revoke;
Steven Whitehousef42faf42006-01-30 18:34:10 +0000779
David Teiglandb3b94fa2006-01-16 16:50:04 +0000780 struct list_head sd_log_le_revoke;
Steven Whitehoused7b616e2007-09-02 10:48:13 +0100781 struct list_head sd_log_le_ordered;
Steven Whitehouse45138992013-01-28 09:30:07 +0000782 spinlock_t sd_ordered_lock;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000783
Benjamin Marzinski5e687ea2010-05-04 14:29:16 -0500784 atomic_t sd_log_thresh1;
785 atomic_t sd_log_thresh2;
Steven Whitehousefd041f02007-11-08 14:55:03 +0000786 atomic_t sd_log_blks_free;
Benjamin Marzinski5e687ea2010-05-04 14:29:16 -0500787 wait_queue_head_t sd_log_waitq;
788 wait_queue_head_t sd_logd_waitq;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000789
Steven Whitehousecd915492006-09-04 12:49:07 -0400790 u64 sd_log_sequence;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000791 unsigned int sd_log_head;
792 unsigned int sd_log_tail;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000793 int sd_log_idle;
794
Steven Whitehouse484adff2006-03-29 09:12:12 -0500795 struct rw_semaphore sd_log_flush_lock;
Steven Whitehouse16615be2007-09-17 10:59:52 +0100796 atomic_t sd_log_in_flight;
Steven Whitehousee8c92ed2012-04-16 09:28:31 +0100797 struct bio *sd_log_bio;
Steven Whitehouse16615be2007-09-17 10:59:52 +0100798 wait_queue_head_t sd_log_flush_wait;
Steven Whitehousee8c92ed2012-04-16 09:28:31 +0100799 int sd_log_error;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000800
Benjamin Marzinski2e60d762014-11-13 20:42:04 -0600801 atomic_t sd_reserving_log;
802 wait_queue_head_t sd_reserving_log_wait;
803
David Teiglandb3b94fa2006-01-16 16:50:04 +0000804 unsigned int sd_log_flush_head;
Steven Whitehousecd915492006-09-04 12:49:07 -0400805 u64 sd_log_flush_wrapped;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000806
Dave Chinnerd6a079e2011-03-11 11:52:25 +0000807 spinlock_t sd_ail_lock;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000808 struct list_head sd_ail1_list;
809 struct list_head sd_ail2_list;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000810
David Teiglandb3b94fa2006-01-16 16:50:04 +0000811 /* For quiescing the filesystem */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000812 struct gfs2_holder sd_freeze_gh;
Benjamin Marzinski2e60d762014-11-13 20:42:04 -0600813 atomic_t sd_freeze_state;
814 struct mutex sd_freeze_mutex;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000815
David Teiglandb3b94fa2006-01-16 16:50:04 +0000816 char sd_fsname[GFS2_FSNAME_LEN];
817 char sd_table_name[GFS2_FSNAME_LEN];
818 char sd_proto_name[GFS2_FSNAME_LEN];
819
820 /* Debugging crud */
821
822 unsigned long sd_last_warning;
Robert Peterson5f882092007-04-18 11:41:11 -0500823 struct dentry *debugfs_dir; /* debugfs directory */
Steven Whitehousea2457692012-01-20 10:38:36 +0000824 struct dentry *debugfs_dentry_glocks;
825 struct dentry *debugfs_dentry_glstats;
826 struct dentry *debugfs_dentry_sbstats;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000827};
828
Steven Whitehousea2457692012-01-20 10:38:36 +0000829static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which)
830{
831 gl->gl_stats.stats[which]++;
832}
833
834static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which)
835{
836 const struct gfs2_sbd *sdp = gl->gl_sbd;
837 preempt_disable();
838 this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++;
839 preempt_enable();
840}
841
David Teiglandb3b94fa2006-01-16 16:50:04 +0000842#endif /* __INCORE_DOT_H__ */
843