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" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 29 | |
Steven Whitehouse | ba7f729 | 2006-07-26 11:27:10 -0400 | [diff] [blame] | 30 | |
| 31 | /** |
| 32 | * gfs2_pte_inval - Sync and invalidate all PTEs associated with a glock |
| 33 | * @gl: the glock |
| 34 | * |
| 35 | */ |
| 36 | |
| 37 | static void gfs2_pte_inval(struct gfs2_glock *gl) |
| 38 | { |
| 39 | struct gfs2_inode *ip; |
| 40 | struct inode *inode; |
| 41 | |
| 42 | ip = gl->gl_object; |
| 43 | inode = &ip->i_inode; |
| 44 | if (!ip || !S_ISREG(ip->i_di.di_mode)) |
| 45 | return; |
| 46 | |
| 47 | if (!test_bit(GIF_PAGED, &ip->i_flags)) |
| 48 | return; |
| 49 | |
| 50 | unmap_shared_mapping_range(inode->i_mapping, 0, 0); |
| 51 | |
| 52 | if (test_bit(GIF_SW_PAGED, &ip->i_flags)) |
| 53 | set_bit(GLF_DIRTY, &gl->gl_flags); |
| 54 | |
| 55 | clear_bit(GIF_SW_PAGED, &ip->i_flags); |
| 56 | } |
| 57 | |
| 58 | /** |
| 59 | * gfs2_page_inval - Invalidate all pages associated with a glock |
| 60 | * @gl: the glock |
| 61 | * |
| 62 | */ |
| 63 | |
| 64 | static void gfs2_page_inval(struct gfs2_glock *gl) |
| 65 | { |
| 66 | struct gfs2_inode *ip; |
| 67 | struct inode *inode; |
| 68 | |
| 69 | ip = gl->gl_object; |
| 70 | inode = &ip->i_inode; |
| 71 | if (!ip || !S_ISREG(ip->i_di.di_mode)) |
| 72 | return; |
| 73 | |
| 74 | truncate_inode_pages(inode->i_mapping, 0); |
| 75 | gfs2_assert_withdraw(GFS2_SB(&ip->i_inode), !inode->i_mapping->nrpages); |
| 76 | clear_bit(GIF_PAGED, &ip->i_flags); |
| 77 | } |
| 78 | |
| 79 | /** |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame^] | 80 | * gfs2_page_wait - Wait for writeback of data |
Steven Whitehouse | ba7f729 | 2006-07-26 11:27:10 -0400 | [diff] [blame] | 81 | * @gl: the glock |
Steven Whitehouse | ba7f729 | 2006-07-26 11:27:10 -0400 | [diff] [blame] | 82 | * |
| 83 | * Syncs data (not metadata) for a regular file. |
| 84 | * No-op for all other types. |
| 85 | */ |
| 86 | |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame^] | 87 | static void gfs2_page_wait(struct gfs2_glock *gl) |
Steven Whitehouse | ba7f729 | 2006-07-26 11:27:10 -0400 | [diff] [blame] | 88 | { |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame^] | 89 | struct gfs2_inode *ip = gl->gl_object; |
| 90 | struct inode *inode = &ip->i_inode; |
| 91 | struct address_space *mapping = inode->i_mapping; |
| 92 | int error; |
Steven Whitehouse | ba7f729 | 2006-07-26 11:27:10 -0400 | [diff] [blame] | 93 | |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame^] | 94 | if (!S_ISREG(ip->i_di.di_mode)) |
Steven Whitehouse | ba7f729 | 2006-07-26 11:27:10 -0400 | [diff] [blame] | 95 | return; |
| 96 | |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame^] | 97 | error = filemap_fdatawait(mapping); |
Steven Whitehouse | ba7f729 | 2006-07-26 11:27:10 -0400 | [diff] [blame] | 98 | |
| 99 | /* Put back any errors cleared by filemap_fdatawait() |
| 100 | so they can be caught by someone who can pass them |
| 101 | up to user space. */ |
| 102 | |
| 103 | if (error == -ENOSPC) |
| 104 | set_bit(AS_ENOSPC, &mapping->flags); |
| 105 | else if (error) |
| 106 | set_bit(AS_EIO, &mapping->flags); |
| 107 | |
| 108 | } |
| 109 | |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame^] | 110 | static void gfs2_page_writeback(struct gfs2_glock *gl) |
| 111 | { |
| 112 | struct gfs2_inode *ip = gl->gl_object; |
| 113 | struct inode *inode = &ip->i_inode; |
| 114 | struct address_space *mapping = inode->i_mapping; |
| 115 | |
| 116 | if (!S_ISREG(ip->i_di.di_mode)) |
| 117 | return; |
| 118 | |
| 119 | filemap_fdatawrite(mapping); |
| 120 | } |
| 121 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 122 | /** |
| 123 | * meta_go_sync - sync out the metadata for this glock |
| 124 | * @gl: the glock |
| 125 | * @flags: DIO_* |
| 126 | * |
| 127 | * Called when demoting or unlocking an EX glock. We must flush |
| 128 | * to disk all dirty buffers/pages relating to this glock, and must not |
| 129 | * not return to caller to demote/unlock the glock until I/O is complete. |
| 130 | */ |
| 131 | |
| 132 | static void meta_go_sync(struct gfs2_glock *gl, int flags) |
| 133 | { |
| 134 | if (!(flags & DIO_METADATA)) |
| 135 | return; |
| 136 | |
| 137 | if (test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) { |
Steven Whitehouse | b09e593 | 2006-04-07 11:17:32 -0400 | [diff] [blame] | 138 | gfs2_log_flush(gl->gl_sbd, gl); |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame^] | 139 | gfs2_meta_sync(gl); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 140 | if (flags & DIO_RELEASE) |
| 141 | gfs2_ail_empty_gl(gl); |
| 142 | } |
| 143 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 144 | } |
| 145 | |
| 146 | /** |
| 147 | * meta_go_inval - invalidate the metadata for this glock |
| 148 | * @gl: the glock |
| 149 | * @flags: |
| 150 | * |
| 151 | */ |
| 152 | |
| 153 | static void meta_go_inval(struct gfs2_glock *gl, int flags) |
| 154 | { |
| 155 | if (!(flags & DIO_METADATA)) |
| 156 | return; |
| 157 | |
| 158 | gfs2_meta_inval(gl); |
| 159 | gl->gl_vn++; |
| 160 | } |
| 161 | |
| 162 | /** |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 163 | * inode_go_xmote_th - promote/demote a glock |
| 164 | * @gl: the glock |
| 165 | * @state: the requested state |
| 166 | * @flags: |
| 167 | * |
| 168 | */ |
| 169 | |
| 170 | static void inode_go_xmote_th(struct gfs2_glock *gl, unsigned int state, |
| 171 | int flags) |
| 172 | { |
| 173 | if (gl->gl_state != LM_ST_UNLOCKED) |
| 174 | gfs2_pte_inval(gl); |
| 175 | gfs2_glock_xmote_th(gl, state, flags); |
| 176 | } |
| 177 | |
| 178 | /** |
| 179 | * inode_go_xmote_bh - After promoting/demoting a glock |
| 180 | * @gl: the glock |
| 181 | * |
| 182 | */ |
| 183 | |
| 184 | static void inode_go_xmote_bh(struct gfs2_glock *gl) |
| 185 | { |
| 186 | struct gfs2_holder *gh = gl->gl_req_gh; |
| 187 | struct buffer_head *bh; |
| 188 | int error; |
| 189 | |
| 190 | if (gl->gl_state != LM_ST_UNLOCKED && |
| 191 | (!gh || !(gh->gh_flags & GL_SKIP))) { |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame^] | 192 | error = gfs2_meta_read(gl, gl->gl_name.ln_number, 0, &bh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 193 | if (!error) |
| 194 | brelse(bh); |
| 195 | } |
| 196 | } |
| 197 | |
| 198 | /** |
| 199 | * inode_go_drop_th - unlock a glock |
| 200 | * @gl: the glock |
| 201 | * |
| 202 | * Invoked from rq_demote(). |
| 203 | * Another node needs the lock in EXCLUSIVE mode, or lock (unused for too long) |
| 204 | * is being purged from our node's glock cache; we're dropping lock. |
| 205 | */ |
| 206 | |
| 207 | static void inode_go_drop_th(struct gfs2_glock *gl) |
| 208 | { |
| 209 | gfs2_pte_inval(gl); |
| 210 | gfs2_glock_drop_th(gl); |
| 211 | } |
| 212 | |
| 213 | /** |
| 214 | * inode_go_sync - Sync the dirty data and/or metadata for an inode glock |
| 215 | * @gl: the glock protecting the inode |
| 216 | * @flags: |
| 217 | * |
| 218 | */ |
| 219 | |
| 220 | static void inode_go_sync(struct gfs2_glock *gl, int flags) |
| 221 | { |
| 222 | int meta = (flags & DIO_METADATA); |
| 223 | int data = (flags & DIO_DATA); |
| 224 | |
| 225 | if (test_bit(GLF_DIRTY, &gl->gl_flags)) { |
| 226 | if (meta && data) { |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame^] | 227 | gfs2_page_writeback(gl); |
Steven Whitehouse | b09e593 | 2006-04-07 11:17:32 -0400 | [diff] [blame] | 228 | gfs2_log_flush(gl->gl_sbd, gl); |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame^] | 229 | gfs2_meta_sync(gl); |
| 230 | gfs2_page_wait(gl); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 231 | clear_bit(GLF_DIRTY, &gl->gl_flags); |
| 232 | } else if (meta) { |
Steven Whitehouse | b09e593 | 2006-04-07 11:17:32 -0400 | [diff] [blame] | 233 | gfs2_log_flush(gl->gl_sbd, gl); |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame^] | 234 | gfs2_meta_sync(gl); |
| 235 | } else if (data) { |
| 236 | gfs2_page_writeback(gl); |
| 237 | gfs2_page_wait(gl); |
| 238 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 239 | if (flags & DIO_RELEASE) |
| 240 | gfs2_ail_empty_gl(gl); |
| 241 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 242 | } |
| 243 | |
| 244 | /** |
| 245 | * inode_go_inval - prepare a inode glock to be released |
| 246 | * @gl: the glock |
| 247 | * @flags: |
| 248 | * |
| 249 | */ |
| 250 | |
| 251 | static void inode_go_inval(struct gfs2_glock *gl, int flags) |
| 252 | { |
| 253 | int meta = (flags & DIO_METADATA); |
| 254 | int data = (flags & DIO_DATA); |
| 255 | |
| 256 | if (meta) { |
| 257 | gfs2_meta_inval(gl); |
| 258 | gl->gl_vn++; |
| 259 | } |
| 260 | if (data) |
| 261 | gfs2_page_inval(gl); |
| 262 | } |
| 263 | |
| 264 | /** |
| 265 | * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock |
| 266 | * @gl: the glock |
| 267 | * |
| 268 | * Returns: 1 if it's ok |
| 269 | */ |
| 270 | |
| 271 | static int inode_go_demote_ok(struct gfs2_glock *gl) |
| 272 | { |
| 273 | struct gfs2_sbd *sdp = gl->gl_sbd; |
| 274 | int demote = 0; |
| 275 | |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 276 | if (!gl->gl_object && !gl->gl_aspace->i_mapping->nrpages) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 277 | demote = 1; |
| 278 | else if (!sdp->sd_args.ar_localcaching && |
| 279 | time_after_eq(jiffies, gl->gl_stamp + |
| 280 | gfs2_tune_get(sdp, gt_demote_secs) * HZ)) |
| 281 | demote = 1; |
| 282 | |
| 283 | return demote; |
| 284 | } |
| 285 | |
| 286 | /** |
| 287 | * inode_go_lock - operation done after an inode lock is locked by a process |
| 288 | * @gl: the glock |
| 289 | * @flags: |
| 290 | * |
| 291 | * Returns: errno |
| 292 | */ |
| 293 | |
| 294 | static int inode_go_lock(struct gfs2_holder *gh) |
| 295 | { |
| 296 | struct gfs2_glock *gl = gh->gh_gl; |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 297 | struct gfs2_inode *ip = gl->gl_object; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 298 | int error = 0; |
| 299 | |
| 300 | if (!ip) |
| 301 | return 0; |
| 302 | |
| 303 | if (ip->i_vn != gl->gl_vn) { |
| 304 | error = gfs2_inode_refresh(ip); |
| 305 | if (error) |
| 306 | return error; |
| 307 | gfs2_inode_attr_in(ip); |
| 308 | } |
| 309 | |
| 310 | if ((ip->i_di.di_flags & GFS2_DIF_TRUNC_IN_PROG) && |
| 311 | (gl->gl_state == LM_ST_EXCLUSIVE) && |
| 312 | (gh->gh_flags & GL_LOCAL_EXCL)) |
| 313 | error = gfs2_truncatei_resume(ip); |
| 314 | |
| 315 | return error; |
| 316 | } |
| 317 | |
| 318 | /** |
| 319 | * inode_go_unlock - operation done before an inode lock is unlocked by a |
| 320 | * process |
| 321 | * @gl: the glock |
| 322 | * @flags: |
| 323 | * |
| 324 | */ |
| 325 | |
| 326 | static void inode_go_unlock(struct gfs2_holder *gh) |
| 327 | { |
| 328 | struct gfs2_glock *gl = gh->gh_gl; |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 329 | struct gfs2_inode *ip = gl->gl_object; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 330 | |
Steven Whitehouse | 75d3b81 | 2006-09-04 11:41:31 -0400 | [diff] [blame] | 331 | if (ip == NULL) |
| 332 | return; |
| 333 | if (test_bit(GLF_DIRTY, &gl->gl_flags)) |
| 334 | gfs2_inode_attr_in(ip); |
| 335 | gfs2_meta_cache_flush(ip); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 336 | } |
| 337 | |
| 338 | /** |
| 339 | * inode_greedy - |
| 340 | * @gl: the glock |
| 341 | * |
| 342 | */ |
| 343 | |
| 344 | static void inode_greedy(struct gfs2_glock *gl) |
| 345 | { |
| 346 | struct gfs2_sbd *sdp = gl->gl_sbd; |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 347 | struct gfs2_inode *ip = gl->gl_object; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 348 | unsigned int quantum = gfs2_tune_get(sdp, gt_greedy_quantum); |
| 349 | unsigned int max = gfs2_tune_get(sdp, gt_greedy_max); |
| 350 | unsigned int new_time; |
| 351 | |
| 352 | spin_lock(&ip->i_spin); |
| 353 | |
| 354 | if (time_after(ip->i_last_pfault + quantum, jiffies)) { |
| 355 | new_time = ip->i_greedy + quantum; |
| 356 | if (new_time > max) |
| 357 | new_time = max; |
| 358 | } else { |
| 359 | new_time = ip->i_greedy - quantum; |
| 360 | if (!new_time || new_time > max) |
| 361 | new_time = 1; |
| 362 | } |
| 363 | |
| 364 | ip->i_greedy = new_time; |
| 365 | |
| 366 | spin_unlock(&ip->i_spin); |
| 367 | |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 368 | iput(&ip->i_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 369 | } |
| 370 | |
| 371 | /** |
| 372 | * rgrp_go_demote_ok - Check to see if it's ok to unlock a RG's glock |
| 373 | * @gl: the glock |
| 374 | * |
| 375 | * Returns: 1 if it's ok |
| 376 | */ |
| 377 | |
| 378 | static int rgrp_go_demote_ok(struct gfs2_glock *gl) |
| 379 | { |
| 380 | return !gl->gl_aspace->i_mapping->nrpages; |
| 381 | } |
| 382 | |
| 383 | /** |
| 384 | * rgrp_go_lock - operation done after an rgrp lock is locked by |
| 385 | * a first holder on this node. |
| 386 | * @gl: the glock |
| 387 | * @flags: |
| 388 | * |
| 389 | * Returns: errno |
| 390 | */ |
| 391 | |
| 392 | static int rgrp_go_lock(struct gfs2_holder *gh) |
| 393 | { |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 394 | return gfs2_rgrp_bh_get(gh->gh_gl->gl_object); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 395 | } |
| 396 | |
| 397 | /** |
| 398 | * rgrp_go_unlock - operation done before an rgrp lock is unlocked by |
| 399 | * a last holder on this node. |
| 400 | * @gl: the glock |
| 401 | * @flags: |
| 402 | * |
| 403 | */ |
| 404 | |
| 405 | static void rgrp_go_unlock(struct gfs2_holder *gh) |
| 406 | { |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 407 | gfs2_rgrp_bh_put(gh->gh_gl->gl_object); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 408 | } |
| 409 | |
| 410 | /** |
| 411 | * trans_go_xmote_th - promote/demote the transaction glock |
| 412 | * @gl: the glock |
| 413 | * @state: the requested state |
| 414 | * @flags: |
| 415 | * |
| 416 | */ |
| 417 | |
| 418 | static void trans_go_xmote_th(struct gfs2_glock *gl, unsigned int state, |
| 419 | int flags) |
| 420 | { |
| 421 | struct gfs2_sbd *sdp = gl->gl_sbd; |
| 422 | |
| 423 | if (gl->gl_state != LM_ST_UNLOCKED && |
| 424 | test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { |
| 425 | gfs2_meta_syncfs(sdp); |
| 426 | gfs2_log_shutdown(sdp); |
| 427 | } |
| 428 | |
| 429 | gfs2_glock_xmote_th(gl, state, flags); |
| 430 | } |
| 431 | |
| 432 | /** |
| 433 | * trans_go_xmote_bh - After promoting/demoting the transaction glock |
| 434 | * @gl: the glock |
| 435 | * |
| 436 | */ |
| 437 | |
| 438 | static void trans_go_xmote_bh(struct gfs2_glock *gl) |
| 439 | { |
| 440 | struct gfs2_sbd *sdp = gl->gl_sbd; |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 441 | struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 442 | struct gfs2_glock *j_gl = ip->i_gl; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 443 | struct gfs2_log_header head; |
| 444 | int error; |
| 445 | |
| 446 | if (gl->gl_state != LM_ST_UNLOCKED && |
| 447 | test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 448 | gfs2_meta_cache_flush(GFS2_I(sdp->sd_jdesc->jd_inode)); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 449 | j_gl->gl_ops->go_inval(j_gl, DIO_METADATA | DIO_DATA); |
| 450 | |
| 451 | error = gfs2_find_jhead(sdp->sd_jdesc, &head); |
| 452 | if (error) |
| 453 | gfs2_consist(sdp); |
| 454 | if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) |
| 455 | gfs2_consist(sdp); |
| 456 | |
| 457 | /* Initialize some head of the log stuff */ |
| 458 | if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) { |
| 459 | sdp->sd_log_sequence = head.lh_sequence + 1; |
| 460 | gfs2_log_pointers_init(sdp, head.lh_blkno); |
| 461 | } |
| 462 | } |
| 463 | } |
| 464 | |
| 465 | /** |
| 466 | * trans_go_drop_th - unlock the transaction glock |
| 467 | * @gl: the glock |
| 468 | * |
| 469 | * We want to sync the device even with localcaching. Remember |
| 470 | * that localcaching journal replay only marks buffers dirty. |
| 471 | */ |
| 472 | |
| 473 | static void trans_go_drop_th(struct gfs2_glock *gl) |
| 474 | { |
| 475 | struct gfs2_sbd *sdp = gl->gl_sbd; |
| 476 | |
| 477 | if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { |
| 478 | gfs2_meta_syncfs(sdp); |
| 479 | gfs2_log_shutdown(sdp); |
| 480 | } |
| 481 | |
| 482 | gfs2_glock_drop_th(gl); |
| 483 | } |
| 484 | |
| 485 | /** |
| 486 | * quota_go_demote_ok - Check to see if it's ok to unlock a quota glock |
| 487 | * @gl: the glock |
| 488 | * |
| 489 | * Returns: 1 if it's ok |
| 490 | */ |
| 491 | |
| 492 | static int quota_go_demote_ok(struct gfs2_glock *gl) |
| 493 | { |
| 494 | return !atomic_read(&gl->gl_lvb_count); |
| 495 | } |
| 496 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 497 | const struct gfs2_glock_operations gfs2_meta_glops = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 498 | .go_xmote_th = gfs2_glock_xmote_th, |
| 499 | .go_drop_th = gfs2_glock_drop_th, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 500 | .go_type = LM_TYPE_META, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 501 | }; |
| 502 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 503 | const struct gfs2_glock_operations gfs2_inode_glops = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 504 | .go_xmote_th = inode_go_xmote_th, |
| 505 | .go_xmote_bh = inode_go_xmote_bh, |
| 506 | .go_drop_th = inode_go_drop_th, |
| 507 | .go_sync = inode_go_sync, |
| 508 | .go_inval = inode_go_inval, |
| 509 | .go_demote_ok = inode_go_demote_ok, |
| 510 | .go_lock = inode_go_lock, |
| 511 | .go_unlock = inode_go_unlock, |
| 512 | .go_greedy = inode_greedy, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 513 | .go_type = LM_TYPE_INODE, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 514 | }; |
| 515 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 516 | const struct gfs2_glock_operations gfs2_rgrp_glops = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 517 | .go_xmote_th = gfs2_glock_xmote_th, |
| 518 | .go_drop_th = gfs2_glock_drop_th, |
| 519 | .go_sync = meta_go_sync, |
| 520 | .go_inval = meta_go_inval, |
| 521 | .go_demote_ok = rgrp_go_demote_ok, |
| 522 | .go_lock = rgrp_go_lock, |
| 523 | .go_unlock = rgrp_go_unlock, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 524 | .go_type = LM_TYPE_RGRP, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 525 | }; |
| 526 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 527 | const struct gfs2_glock_operations gfs2_trans_glops = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 528 | .go_xmote_th = trans_go_xmote_th, |
| 529 | .go_xmote_bh = trans_go_xmote_bh, |
| 530 | .go_drop_th = trans_go_drop_th, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 531 | .go_type = LM_TYPE_NONDISK, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 532 | }; |
| 533 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 534 | const struct gfs2_glock_operations gfs2_iopen_glops = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 535 | .go_xmote_th = gfs2_glock_xmote_th, |
| 536 | .go_drop_th = gfs2_glock_drop_th, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 537 | .go_type = LM_TYPE_IOPEN, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 538 | }; |
| 539 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 540 | const struct gfs2_glock_operations gfs2_flock_glops = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 541 | .go_xmote_th = gfs2_glock_xmote_th, |
| 542 | .go_drop_th = gfs2_glock_drop_th, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 543 | .go_type = LM_TYPE_FLOCK, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 544 | }; |
| 545 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 546 | const struct gfs2_glock_operations gfs2_nondisk_glops = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 547 | .go_xmote_th = gfs2_glock_xmote_th, |
| 548 | .go_drop_th = gfs2_glock_drop_th, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 549 | .go_type = LM_TYPE_NONDISK, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 550 | }; |
| 551 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 552 | const struct gfs2_glock_operations gfs2_quota_glops = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 553 | .go_xmote_th = gfs2_glock_xmote_th, |
| 554 | .go_drop_th = gfs2_glock_drop_th, |
| 555 | .go_demote_ok = quota_go_demote_ok, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 556 | .go_type = LM_TYPE_QUOTA, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 557 | }; |
| 558 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 559 | const struct gfs2_glock_operations gfs2_journal_glops = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 560 | .go_xmote_th = gfs2_glock_xmote_th, |
| 561 | .go_drop_th = gfs2_glock_drop_th, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 562 | .go_type = LM_TYPE_JOURNAL, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 563 | }; |
| 564 | |