David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
Steven Whitehouse | 3a8a9a1 | 2006-05-18 15:09:15 -0400 | [diff] [blame] | 3 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 4 | * |
| 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 Whitehouse | e9fc2aa | 2006-09-01 11:05:15 -0400 | [diff] [blame] | 7 | * of the GNU General Public License version 2. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 8 | */ |
| 9 | |
| 10 | #include <linux/sched.h> |
| 11 | #include <linux/slab.h> |
| 12 | #include <linux/spinlock.h> |
| 13 | #include <linux/completion.h> |
| 14 | #include <linux/buffer_head.h> |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 15 | #include <linux/gfs2_ondisk.h> |
Fabio Massimo Di Nitto | 7d30859 | 2006-09-19 07:56:29 +0200 | [diff] [blame] | 16 | #include <linux/lm_interface.h> |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 17 | |
| 18 | #include "gfs2.h" |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 19 | #include "incore.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 20 | #include "bmap.h" |
| 21 | #include "glock.h" |
| 22 | #include "glops.h" |
| 23 | #include "inode.h" |
| 24 | #include "log.h" |
| 25 | #include "meta_io.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 26 | #include "recovery.h" |
| 27 | #include "rgrp.h" |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 28 | #include "util.h" |
Steven Whitehouse | ddacfaf | 2006-10-03 11:10:41 -0400 | [diff] [blame] | 29 | #include "trans.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 30 | |
Steven Whitehouse | ddacfaf | 2006-10-03 11:10:41 -0400 | [diff] [blame] | 31 | /** |
| 32 | * ail_empty_gl - remove all buffers for a given lock from the AIL |
| 33 | * @gl: the glock |
| 34 | * |
| 35 | * None of the buffers should be dirty, locked, or pinned. |
| 36 | */ |
| 37 | |
| 38 | static void gfs2_ail_empty_gl(struct gfs2_glock *gl) |
| 39 | { |
| 40 | struct gfs2_sbd *sdp = gl->gl_sbd; |
| 41 | unsigned int blocks; |
| 42 | struct list_head *head = &gl->gl_ail_list; |
| 43 | struct gfs2_bufdata *bd; |
| 44 | struct buffer_head *bh; |
| 45 | u64 blkno; |
| 46 | int error; |
| 47 | |
| 48 | blocks = atomic_read(&gl->gl_ail_count); |
| 49 | if (!blocks) |
| 50 | return; |
| 51 | |
| 52 | error = gfs2_trans_begin(sdp, 0, blocks); |
| 53 | if (gfs2_assert_withdraw(sdp, !error)) |
| 54 | return; |
| 55 | |
| 56 | gfs2_log_lock(sdp); |
| 57 | while (!list_empty(head)) { |
| 58 | bd = list_entry(head->next, struct gfs2_bufdata, |
| 59 | bd_ail_gl_list); |
| 60 | bh = bd->bd_bh; |
| 61 | blkno = bh->b_blocknr; |
| 62 | gfs2_assert_withdraw(sdp, !buffer_busy(bh)); |
| 63 | |
| 64 | bd->bd_ail = NULL; |
| 65 | list_del(&bd->bd_ail_st_list); |
| 66 | list_del(&bd->bd_ail_gl_list); |
| 67 | atomic_dec(&gl->gl_ail_count); |
| 68 | brelse(bh); |
| 69 | gfs2_log_unlock(sdp); |
| 70 | |
| 71 | gfs2_trans_add_revoke(sdp, blkno); |
| 72 | |
| 73 | gfs2_log_lock(sdp); |
| 74 | } |
| 75 | gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count)); |
| 76 | gfs2_log_unlock(sdp); |
| 77 | |
| 78 | gfs2_trans_end(sdp); |
| 79 | gfs2_log_flush(sdp, NULL); |
| 80 | } |
Steven Whitehouse | ba7f729 | 2006-07-26 11:27:10 -0400 | [diff] [blame] | 81 | |
| 82 | /** |
| 83 | * gfs2_pte_inval - Sync and invalidate all PTEs associated with a glock |
| 84 | * @gl: the glock |
| 85 | * |
| 86 | */ |
| 87 | |
| 88 | static void gfs2_pte_inval(struct gfs2_glock *gl) |
| 89 | { |
| 90 | struct gfs2_inode *ip; |
| 91 | struct inode *inode; |
| 92 | |
| 93 | ip = gl->gl_object; |
| 94 | inode = &ip->i_inode; |
Steven Whitehouse | b60623c | 2006-11-01 12:22:46 -0500 | [diff] [blame] | 95 | if (!ip || !S_ISREG(inode->i_mode)) |
Steven Whitehouse | ba7f729 | 2006-07-26 11:27:10 -0400 | [diff] [blame] | 96 | return; |
| 97 | |
| 98 | if (!test_bit(GIF_PAGED, &ip->i_flags)) |
| 99 | return; |
| 100 | |
| 101 | unmap_shared_mapping_range(inode->i_mapping, 0, 0); |
| 102 | |
| 103 | if (test_bit(GIF_SW_PAGED, &ip->i_flags)) |
| 104 | set_bit(GLF_DIRTY, &gl->gl_flags); |
| 105 | |
| 106 | clear_bit(GIF_SW_PAGED, &ip->i_flags); |
| 107 | } |
| 108 | |
| 109 | /** |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 110 | * meta_go_sync - sync out the metadata for this glock |
| 111 | * @gl: the glock |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 112 | * |
| 113 | * Called when demoting or unlocking an EX glock. We must flush |
| 114 | * to disk all dirty buffers/pages relating to this glock, and must not |
| 115 | * not return to caller to demote/unlock the glock until I/O is complete. |
| 116 | */ |
| 117 | |
Steven Whitehouse | 1a14d3a | 2006-11-20 10:37:45 -0500 | [diff] [blame] | 118 | static void meta_go_sync(struct gfs2_glock *gl) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 119 | { |
Steven Whitehouse | b5d32be | 2007-01-22 12:15:34 -0500 | [diff] [blame] | 120 | if (gl->gl_state != LM_ST_EXCLUSIVE) |
| 121 | return; |
| 122 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 123 | if (test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) { |
Steven Whitehouse | b09e593 | 2006-04-07 11:17:32 -0400 | [diff] [blame] | 124 | gfs2_log_flush(gl->gl_sbd, gl); |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame] | 125 | gfs2_meta_sync(gl); |
Steven Whitehouse | 1a14d3a | 2006-11-20 10:37:45 -0500 | [diff] [blame] | 126 | gfs2_ail_empty_gl(gl); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 127 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 128 | } |
| 129 | |
| 130 | /** |
| 131 | * meta_go_inval - invalidate the metadata for this glock |
| 132 | * @gl: the glock |
| 133 | * @flags: |
| 134 | * |
| 135 | */ |
| 136 | |
| 137 | static void meta_go_inval(struct gfs2_glock *gl, int flags) |
| 138 | { |
| 139 | if (!(flags & DIO_METADATA)) |
| 140 | return; |
| 141 | |
| 142 | gfs2_meta_inval(gl); |
| 143 | gl->gl_vn++; |
| 144 | } |
| 145 | |
| 146 | /** |
Steven Whitehouse | b5d32be | 2007-01-22 12:15:34 -0500 | [diff] [blame] | 147 | * inode_go_sync - Sync the dirty data and/or metadata for an inode glock |
| 148 | * @gl: the glock protecting the inode |
| 149 | * |
| 150 | */ |
| 151 | |
| 152 | static void inode_go_sync(struct gfs2_glock *gl) |
| 153 | { |
| 154 | struct gfs2_inode *ip = gl->gl_object; |
| 155 | |
| 156 | if (ip && !S_ISREG(ip->i_inode.i_mode)) |
| 157 | ip = NULL; |
| 158 | |
| 159 | if (test_bit(GLF_DIRTY, &gl->gl_flags)) { |
| 160 | gfs2_log_flush(gl->gl_sbd, gl); |
| 161 | if (ip) |
| 162 | filemap_fdatawrite(ip->i_inode.i_mapping); |
| 163 | gfs2_meta_sync(gl); |
| 164 | if (ip) { |
| 165 | struct address_space *mapping = ip->i_inode.i_mapping; |
| 166 | int error = filemap_fdatawait(mapping); |
| 167 | if (error == -ENOSPC) |
| 168 | set_bit(AS_ENOSPC, &mapping->flags); |
| 169 | else if (error) |
| 170 | set_bit(AS_EIO, &mapping->flags); |
| 171 | } |
| 172 | clear_bit(GLF_DIRTY, &gl->gl_flags); |
| 173 | gfs2_ail_empty_gl(gl); |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | /** |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 178 | * inode_go_xmote_th - promote/demote a glock |
| 179 | * @gl: the glock |
| 180 | * @state: the requested state |
| 181 | * @flags: |
| 182 | * |
| 183 | */ |
| 184 | |
Steven Whitehouse | b5d32be | 2007-01-22 12:15:34 -0500 | [diff] [blame] | 185 | static void inode_go_xmote_th(struct gfs2_glock *gl) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 186 | { |
| 187 | if (gl->gl_state != LM_ST_UNLOCKED) |
| 188 | gfs2_pte_inval(gl); |
Steven Whitehouse | b5d32be | 2007-01-22 12:15:34 -0500 | [diff] [blame] | 189 | if (gl->gl_state == LM_ST_EXCLUSIVE) |
| 190 | inode_go_sync(gl); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 191 | } |
| 192 | |
| 193 | /** |
| 194 | * inode_go_xmote_bh - After promoting/demoting a glock |
| 195 | * @gl: the glock |
| 196 | * |
| 197 | */ |
| 198 | |
| 199 | static void inode_go_xmote_bh(struct gfs2_glock *gl) |
| 200 | { |
| 201 | struct gfs2_holder *gh = gl->gl_req_gh; |
| 202 | struct buffer_head *bh; |
| 203 | int error; |
| 204 | |
| 205 | if (gl->gl_state != LM_ST_UNLOCKED && |
| 206 | (!gh || !(gh->gh_flags & GL_SKIP))) { |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame] | 207 | error = gfs2_meta_read(gl, gl->gl_name.ln_number, 0, &bh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 208 | if (!error) |
| 209 | brelse(bh); |
| 210 | } |
| 211 | } |
| 212 | |
| 213 | /** |
| 214 | * inode_go_drop_th - unlock a glock |
| 215 | * @gl: the glock |
| 216 | * |
| 217 | * Invoked from rq_demote(). |
| 218 | * Another node needs the lock in EXCLUSIVE mode, or lock (unused for too long) |
| 219 | * is being purged from our node's glock cache; we're dropping lock. |
| 220 | */ |
| 221 | |
| 222 | static void inode_go_drop_th(struct gfs2_glock *gl) |
| 223 | { |
| 224 | gfs2_pte_inval(gl); |
Steven Whitehouse | b5d32be | 2007-01-22 12:15:34 -0500 | [diff] [blame] | 225 | if (gl->gl_state == LM_ST_EXCLUSIVE) |
| 226 | inode_go_sync(gl); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 227 | } |
| 228 | |
| 229 | /** |
| 230 | * inode_go_inval - prepare a inode glock to be released |
| 231 | * @gl: the glock |
| 232 | * @flags: |
| 233 | * |
| 234 | */ |
| 235 | |
| 236 | static void inode_go_inval(struct gfs2_glock *gl, int flags) |
| 237 | { |
Steven Whitehouse | b004157 | 2006-11-23 10:51:34 -0500 | [diff] [blame] | 238 | struct gfs2_inode *ip = gl->gl_object; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 239 | int meta = (flags & DIO_METADATA); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 240 | |
| 241 | if (meta) { |
| 242 | gfs2_meta_inval(gl); |
Steven Whitehouse | b004157 | 2006-11-23 10:51:34 -0500 | [diff] [blame] | 243 | if (ip) |
| 244 | set_bit(GIF_INVALID, &ip->i_flags); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 245 | } |
Steven Whitehouse | b004157 | 2006-11-23 10:51:34 -0500 | [diff] [blame] | 246 | |
| 247 | if (ip && S_ISREG(ip->i_inode.i_mode)) { |
| 248 | truncate_inode_pages(ip->i_inode.i_mapping, 0); |
| 249 | gfs2_assert_withdraw(GFS2_SB(&ip->i_inode), !ip->i_inode.i_mapping->nrpages); |
| 250 | clear_bit(GIF_PAGED, &ip->i_flags); |
| 251 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 252 | } |
| 253 | |
| 254 | /** |
| 255 | * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock |
| 256 | * @gl: the glock |
| 257 | * |
| 258 | * Returns: 1 if it's ok |
| 259 | */ |
| 260 | |
| 261 | static int inode_go_demote_ok(struct gfs2_glock *gl) |
| 262 | { |
| 263 | struct gfs2_sbd *sdp = gl->gl_sbd; |
| 264 | int demote = 0; |
| 265 | |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 266 | if (!gl->gl_object && !gl->gl_aspace->i_mapping->nrpages) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 267 | demote = 1; |
| 268 | else if (!sdp->sd_args.ar_localcaching && |
| 269 | time_after_eq(jiffies, gl->gl_stamp + |
| 270 | gfs2_tune_get(sdp, gt_demote_secs) * HZ)) |
| 271 | demote = 1; |
| 272 | |
| 273 | return demote; |
| 274 | } |
| 275 | |
| 276 | /** |
| 277 | * inode_go_lock - operation done after an inode lock is locked by a process |
| 278 | * @gl: the glock |
| 279 | * @flags: |
| 280 | * |
| 281 | * Returns: errno |
| 282 | */ |
| 283 | |
| 284 | static int inode_go_lock(struct gfs2_holder *gh) |
| 285 | { |
| 286 | struct gfs2_glock *gl = gh->gh_gl; |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 287 | struct gfs2_inode *ip = gl->gl_object; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 288 | int error = 0; |
| 289 | |
| 290 | if (!ip) |
| 291 | return 0; |
| 292 | |
Steven Whitehouse | bfded27 | 2006-11-01 16:05:38 -0500 | [diff] [blame] | 293 | if (test_bit(GIF_INVALID, &ip->i_flags)) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 294 | error = gfs2_inode_refresh(ip); |
| 295 | if (error) |
| 296 | return error; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 297 | } |
| 298 | |
| 299 | if ((ip->i_di.di_flags & GFS2_DIF_TRUNC_IN_PROG) && |
| 300 | (gl->gl_state == LM_ST_EXCLUSIVE) && |
Steven Whitehouse | 1c0f487 | 2007-01-22 12:10:39 -0500 | [diff] [blame] | 301 | (gh->gh_state == LM_ST_EXCLUSIVE)) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 302 | error = gfs2_truncatei_resume(ip); |
| 303 | |
| 304 | return error; |
| 305 | } |
| 306 | |
| 307 | /** |
| 308 | * inode_go_unlock - operation done before an inode lock is unlocked by a |
| 309 | * process |
| 310 | * @gl: the glock |
| 311 | * @flags: |
| 312 | * |
| 313 | */ |
| 314 | |
| 315 | static void inode_go_unlock(struct gfs2_holder *gh) |
| 316 | { |
| 317 | struct gfs2_glock *gl = gh->gh_gl; |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 318 | struct gfs2_inode *ip = gl->gl_object; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 319 | |
Steven Whitehouse | 9e2dbda | 2006-11-08 15:45:46 -0500 | [diff] [blame] | 320 | if (ip) |
| 321 | gfs2_meta_cache_flush(ip); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 322 | } |
| 323 | |
| 324 | /** |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 325 | * rgrp_go_demote_ok - Check to see if it's ok to unlock a RG's glock |
| 326 | * @gl: the glock |
| 327 | * |
| 328 | * Returns: 1 if it's ok |
| 329 | */ |
| 330 | |
| 331 | static int rgrp_go_demote_ok(struct gfs2_glock *gl) |
| 332 | { |
| 333 | return !gl->gl_aspace->i_mapping->nrpages; |
| 334 | } |
| 335 | |
| 336 | /** |
| 337 | * rgrp_go_lock - operation done after an rgrp lock is locked by |
| 338 | * a first holder on this node. |
| 339 | * @gl: the glock |
| 340 | * @flags: |
| 341 | * |
| 342 | * Returns: errno |
| 343 | */ |
| 344 | |
| 345 | static int rgrp_go_lock(struct gfs2_holder *gh) |
| 346 | { |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 347 | return gfs2_rgrp_bh_get(gh->gh_gl->gl_object); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 348 | } |
| 349 | |
| 350 | /** |
| 351 | * rgrp_go_unlock - operation done before an rgrp lock is unlocked by |
| 352 | * a last holder on this node. |
| 353 | * @gl: the glock |
| 354 | * @flags: |
| 355 | * |
| 356 | */ |
| 357 | |
| 358 | static void rgrp_go_unlock(struct gfs2_holder *gh) |
| 359 | { |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 360 | gfs2_rgrp_bh_put(gh->gh_gl->gl_object); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 361 | } |
| 362 | |
| 363 | /** |
| 364 | * trans_go_xmote_th - promote/demote the transaction glock |
| 365 | * @gl: the glock |
| 366 | * @state: the requested state |
| 367 | * @flags: |
| 368 | * |
| 369 | */ |
| 370 | |
Steven Whitehouse | b5d32be | 2007-01-22 12:15:34 -0500 | [diff] [blame] | 371 | static void trans_go_xmote_th(struct gfs2_glock *gl) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 372 | { |
| 373 | struct gfs2_sbd *sdp = gl->gl_sbd; |
| 374 | |
| 375 | if (gl->gl_state != LM_ST_UNLOCKED && |
| 376 | test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { |
| 377 | gfs2_meta_syncfs(sdp); |
| 378 | gfs2_log_shutdown(sdp); |
| 379 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 380 | } |
| 381 | |
| 382 | /** |
| 383 | * trans_go_xmote_bh - After promoting/demoting the transaction glock |
| 384 | * @gl: the glock |
| 385 | * |
| 386 | */ |
| 387 | |
| 388 | static void trans_go_xmote_bh(struct gfs2_glock *gl) |
| 389 | { |
| 390 | struct gfs2_sbd *sdp = gl->gl_sbd; |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 391 | struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 392 | struct gfs2_glock *j_gl = ip->i_gl; |
Al Viro | 5516762 | 2006-10-13 21:47:13 -0400 | [diff] [blame] | 393 | struct gfs2_log_header_host head; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 394 | int error; |
| 395 | |
| 396 | if (gl->gl_state != LM_ST_UNLOCKED && |
| 397 | test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 398 | gfs2_meta_cache_flush(GFS2_I(sdp->sd_jdesc->jd_inode)); |
Steven Whitehouse | 1a14d3a | 2006-11-20 10:37:45 -0500 | [diff] [blame] | 399 | j_gl->gl_ops->go_inval(j_gl, DIO_METADATA); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 400 | |
| 401 | error = gfs2_find_jhead(sdp->sd_jdesc, &head); |
| 402 | if (error) |
| 403 | gfs2_consist(sdp); |
| 404 | if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) |
| 405 | gfs2_consist(sdp); |
| 406 | |
| 407 | /* Initialize some head of the log stuff */ |
| 408 | if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) { |
| 409 | sdp->sd_log_sequence = head.lh_sequence + 1; |
| 410 | gfs2_log_pointers_init(sdp, head.lh_blkno); |
| 411 | } |
| 412 | } |
| 413 | } |
| 414 | |
| 415 | /** |
| 416 | * trans_go_drop_th - unlock the transaction glock |
| 417 | * @gl: the glock |
| 418 | * |
| 419 | * We want to sync the device even with localcaching. Remember |
| 420 | * that localcaching journal replay only marks buffers dirty. |
| 421 | */ |
| 422 | |
| 423 | static void trans_go_drop_th(struct gfs2_glock *gl) |
| 424 | { |
| 425 | struct gfs2_sbd *sdp = gl->gl_sbd; |
| 426 | |
| 427 | if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { |
| 428 | gfs2_meta_syncfs(sdp); |
| 429 | gfs2_log_shutdown(sdp); |
| 430 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 431 | } |
| 432 | |
| 433 | /** |
| 434 | * quota_go_demote_ok - Check to see if it's ok to unlock a quota glock |
| 435 | * @gl: the glock |
| 436 | * |
| 437 | * Returns: 1 if it's ok |
| 438 | */ |
| 439 | |
| 440 | static int quota_go_demote_ok(struct gfs2_glock *gl) |
| 441 | { |
| 442 | return !atomic_read(&gl->gl_lvb_count); |
| 443 | } |
| 444 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 445 | const struct gfs2_glock_operations gfs2_meta_glops = { |
Steven Whitehouse | b5d32be | 2007-01-22 12:15:34 -0500 | [diff] [blame] | 446 | .go_xmote_th = meta_go_sync, |
| 447 | .go_drop_th = meta_go_sync, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 448 | .go_type = LM_TYPE_META, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 449 | }; |
| 450 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 451 | const struct gfs2_glock_operations gfs2_inode_glops = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 452 | .go_xmote_th = inode_go_xmote_th, |
| 453 | .go_xmote_bh = inode_go_xmote_bh, |
| 454 | .go_drop_th = inode_go_drop_th, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 455 | .go_inval = inode_go_inval, |
| 456 | .go_demote_ok = inode_go_demote_ok, |
| 457 | .go_lock = inode_go_lock, |
| 458 | .go_unlock = inode_go_unlock, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 459 | .go_type = LM_TYPE_INODE, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 460 | }; |
| 461 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 462 | const struct gfs2_glock_operations gfs2_rgrp_glops = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 463 | .go_inval = meta_go_inval, |
| 464 | .go_demote_ok = rgrp_go_demote_ok, |
| 465 | .go_lock = rgrp_go_lock, |
| 466 | .go_unlock = rgrp_go_unlock, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 467 | .go_type = LM_TYPE_RGRP, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 468 | }; |
| 469 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 470 | const struct gfs2_glock_operations gfs2_trans_glops = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 471 | .go_xmote_th = trans_go_xmote_th, |
| 472 | .go_xmote_bh = trans_go_xmote_bh, |
| 473 | .go_drop_th = trans_go_drop_th, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 474 | .go_type = LM_TYPE_NONDISK, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 475 | }; |
| 476 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 477 | const struct gfs2_glock_operations gfs2_iopen_glops = { |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 478 | .go_type = LM_TYPE_IOPEN, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 479 | }; |
| 480 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 481 | const struct gfs2_glock_operations gfs2_flock_glops = { |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 482 | .go_type = LM_TYPE_FLOCK, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 483 | }; |
| 484 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 485 | const struct gfs2_glock_operations gfs2_nondisk_glops = { |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 486 | .go_type = LM_TYPE_NONDISK, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 487 | }; |
| 488 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 489 | const struct gfs2_glock_operations gfs2_quota_glops = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 490 | .go_demote_ok = quota_go_demote_ok, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 491 | .go_type = LM_TYPE_QUOTA, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 492 | }; |
| 493 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 494 | const struct gfs2_glock_operations gfs2_journal_glops = { |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 495 | .go_type = LM_TYPE_JOURNAL, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 496 | }; |
| 497 | |