1b3b94faaSDavid Teigland /* 2b3b94faaSDavid Teigland * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 3da6dd40dSBob Peterson * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved. 4b3b94faaSDavid Teigland * 5b3b94faaSDavid Teigland * This copyrighted material is made available to anyone wishing to use, 6b3b94faaSDavid Teigland * modify, copy, or redistribute it subject to the terms and conditions 7e9fc2aa0SSteven Whitehouse * of the GNU General Public License version 2. 8b3b94faaSDavid Teigland */ 9b3b94faaSDavid Teigland 10d77d1b58SJoe Perches #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 11d77d1b58SJoe Perches 129e6e0a12SSteven Whitehouse #include <linux/bio.h> 13b3b94faaSDavid Teigland #include <linux/sched.h> 14b3b94faaSDavid Teigland #include <linux/slab.h> 15b3b94faaSDavid Teigland #include <linux/spinlock.h> 16b3b94faaSDavid Teigland #include <linux/completion.h> 17b3b94faaSDavid Teigland #include <linux/buffer_head.h> 189e6e0a12SSteven Whitehouse #include <linux/statfs.h> 199e6e0a12SSteven Whitehouse #include <linux/seq_file.h> 209e6e0a12SSteven Whitehouse #include <linux/mount.h> 219e6e0a12SSteven Whitehouse #include <linux/kthread.h> 229e6e0a12SSteven Whitehouse #include <linux/delay.h> 235c676f6dSSteven Whitehouse #include <linux/gfs2_ondisk.h> 249e6e0a12SSteven Whitehouse #include <linux/crc32.h> 259e6e0a12SSteven Whitehouse #include <linux/time.h> 26e402746aSSteven Whitehouse #include <linux/wait.h> 27a9185b41SChristoph Hellwig #include <linux/writeback.h> 284667a0ecSSteven Whitehouse #include <linux/backing-dev.h> 292e60d768SBenjamin Marzinski #include <linux/kernel.h> 30b3b94faaSDavid Teigland 31b3b94faaSDavid Teigland #include "gfs2.h" 325c676f6dSSteven Whitehouse #include "incore.h" 33b3b94faaSDavid Teigland #include "bmap.h" 34b3b94faaSDavid Teigland #include "dir.h" 35b3b94faaSDavid Teigland #include "glock.h" 36b3b94faaSDavid Teigland #include "glops.h" 37b3b94faaSDavid Teigland #include "inode.h" 38b3b94faaSDavid Teigland #include "log.h" 39b3b94faaSDavid Teigland #include "meta_io.h" 40b3b94faaSDavid Teigland #include "quota.h" 41b3b94faaSDavid Teigland #include "recovery.h" 42b3b94faaSDavid Teigland #include "rgrp.h" 43b3b94faaSDavid Teigland #include "super.h" 44b3b94faaSDavid Teigland #include "trans.h" 455c676f6dSSteven Whitehouse #include "util.h" 469e6e0a12SSteven Whitehouse #include "sys.h" 47307cf6e6SSteven Whitehouse #include "xattr.h" 489e6e0a12SSteven Whitehouse 499e6e0a12SSteven Whitehouse #define args_neq(a1, a2, x) ((a1)->ar_##x != (a2)->ar_##x) 509e6e0a12SSteven Whitehouse 519e6e0a12SSteven Whitehouse enum { 529e6e0a12SSteven Whitehouse Opt_lockproto, 539e6e0a12SSteven Whitehouse Opt_locktable, 549e6e0a12SSteven Whitehouse Opt_hostdata, 559e6e0a12SSteven Whitehouse Opt_spectator, 569e6e0a12SSteven Whitehouse Opt_ignore_local_fs, 579e6e0a12SSteven Whitehouse Opt_localflocks, 589e6e0a12SSteven Whitehouse Opt_localcaching, 599e6e0a12SSteven Whitehouse Opt_debug, 609e6e0a12SSteven Whitehouse Opt_nodebug, 619e6e0a12SSteven Whitehouse Opt_upgrade, 629e6e0a12SSteven Whitehouse Opt_acl, 639e6e0a12SSteven Whitehouse Opt_noacl, 649e6e0a12SSteven Whitehouse Opt_quota_off, 659e6e0a12SSteven Whitehouse Opt_quota_account, 669e6e0a12SSteven Whitehouse Opt_quota_on, 679e6e0a12SSteven Whitehouse Opt_quota, 689e6e0a12SSteven Whitehouse Opt_noquota, 699e6e0a12SSteven Whitehouse Opt_suiddir, 709e6e0a12SSteven Whitehouse Opt_nosuiddir, 719e6e0a12SSteven Whitehouse Opt_data_writeback, 729e6e0a12SSteven Whitehouse Opt_data_ordered, 739e6e0a12SSteven Whitehouse Opt_meta, 749e6e0a12SSteven Whitehouse Opt_discard, 759e6e0a12SSteven Whitehouse Opt_nodiscard, 769e6e0a12SSteven Whitehouse Opt_commit, 77d34843d0SBob Peterson Opt_err_withdraw, 78d34843d0SBob Peterson Opt_err_panic, 793d3c10f2SBenjamin Marzinski Opt_statfs_quantum, 803d3c10f2SBenjamin Marzinski Opt_statfs_percent, 813d3c10f2SBenjamin Marzinski Opt_quota_quantum, 82f25934c5SChristoph Hellwig Opt_barrier, 83f25934c5SChristoph Hellwig Opt_nobarrier, 8490306c41SBenjamin Marzinski Opt_rgrplvb, 8590306c41SBenjamin Marzinski Opt_norgrplvb, 86471f3db2SBenjamin Marzinski Opt_loccookie, 87471f3db2SBenjamin Marzinski Opt_noloccookie, 889e6e0a12SSteven Whitehouse Opt_error, 899e6e0a12SSteven Whitehouse }; 909e6e0a12SSteven Whitehouse 919e6e0a12SSteven Whitehouse static const match_table_t tokens = { 929e6e0a12SSteven Whitehouse {Opt_lockproto, "lockproto=%s"}, 939e6e0a12SSteven Whitehouse {Opt_locktable, "locktable=%s"}, 949e6e0a12SSteven Whitehouse {Opt_hostdata, "hostdata=%s"}, 959e6e0a12SSteven Whitehouse {Opt_spectator, "spectator"}, 9643f74c19SSteven Whitehouse {Opt_spectator, "norecovery"}, 979e6e0a12SSteven Whitehouse {Opt_ignore_local_fs, "ignore_local_fs"}, 989e6e0a12SSteven Whitehouse {Opt_localflocks, "localflocks"}, 999e6e0a12SSteven Whitehouse {Opt_localcaching, "localcaching"}, 1009e6e0a12SSteven Whitehouse {Opt_debug, "debug"}, 1019e6e0a12SSteven Whitehouse {Opt_nodebug, "nodebug"}, 1029e6e0a12SSteven Whitehouse {Opt_upgrade, "upgrade"}, 1039e6e0a12SSteven Whitehouse {Opt_acl, "acl"}, 1049e6e0a12SSteven Whitehouse {Opt_noacl, "noacl"}, 1059e6e0a12SSteven Whitehouse {Opt_quota_off, "quota=off"}, 1069e6e0a12SSteven Whitehouse {Opt_quota_account, "quota=account"}, 1079e6e0a12SSteven Whitehouse {Opt_quota_on, "quota=on"}, 1089e6e0a12SSteven Whitehouse {Opt_quota, "quota"}, 1099e6e0a12SSteven Whitehouse {Opt_noquota, "noquota"}, 1109e6e0a12SSteven Whitehouse {Opt_suiddir, "suiddir"}, 1119e6e0a12SSteven Whitehouse {Opt_nosuiddir, "nosuiddir"}, 1129e6e0a12SSteven Whitehouse {Opt_data_writeback, "data=writeback"}, 1139e6e0a12SSteven Whitehouse {Opt_data_ordered, "data=ordered"}, 1149e6e0a12SSteven Whitehouse {Opt_meta, "meta"}, 1159e6e0a12SSteven Whitehouse {Opt_discard, "discard"}, 1169e6e0a12SSteven Whitehouse {Opt_nodiscard, "nodiscard"}, 1179e6e0a12SSteven Whitehouse {Opt_commit, "commit=%d"}, 118d34843d0SBob Peterson {Opt_err_withdraw, "errors=withdraw"}, 119d34843d0SBob Peterson {Opt_err_panic, "errors=panic"}, 1203d3c10f2SBenjamin Marzinski {Opt_statfs_quantum, "statfs_quantum=%d"}, 1213d3c10f2SBenjamin Marzinski {Opt_statfs_percent, "statfs_percent=%d"}, 1223d3c10f2SBenjamin Marzinski {Opt_quota_quantum, "quota_quantum=%d"}, 123f25934c5SChristoph Hellwig {Opt_barrier, "barrier"}, 124f25934c5SChristoph Hellwig {Opt_nobarrier, "nobarrier"}, 12590306c41SBenjamin Marzinski {Opt_rgrplvb, "rgrplvb"}, 12690306c41SBenjamin Marzinski {Opt_norgrplvb, "norgrplvb"}, 127471f3db2SBenjamin Marzinski {Opt_loccookie, "loccookie"}, 128471f3db2SBenjamin Marzinski {Opt_noloccookie, "noloccookie"}, 1299e6e0a12SSteven Whitehouse {Opt_error, NULL} 1309e6e0a12SSteven Whitehouse }; 1319e6e0a12SSteven Whitehouse 1329e6e0a12SSteven Whitehouse /** 1339e6e0a12SSteven Whitehouse * gfs2_mount_args - Parse mount options 134f55073ffSSteven Whitehouse * @args: The structure into which the parsed options will be written 135f55073ffSSteven Whitehouse * @options: The options to parse 1369e6e0a12SSteven Whitehouse * 1379e6e0a12SSteven Whitehouse * Return: errno 1389e6e0a12SSteven Whitehouse */ 1399e6e0a12SSteven Whitehouse 140f55073ffSSteven Whitehouse int gfs2_mount_args(struct gfs2_args *args, char *options) 1419e6e0a12SSteven Whitehouse { 1429e6e0a12SSteven Whitehouse char *o; 1439e6e0a12SSteven Whitehouse int token; 1449e6e0a12SSteven Whitehouse substring_t tmp[MAX_OPT_ARGS]; 1459e6e0a12SSteven Whitehouse int rv; 1469e6e0a12SSteven Whitehouse 1479e6e0a12SSteven Whitehouse /* Split the options into tokens with the "," character and 1489e6e0a12SSteven Whitehouse process them */ 1499e6e0a12SSteven Whitehouse 1509e6e0a12SSteven Whitehouse while (1) { 1519e6e0a12SSteven Whitehouse o = strsep(&options, ","); 1529e6e0a12SSteven Whitehouse if (o == NULL) 1539e6e0a12SSteven Whitehouse break; 1549e6e0a12SSteven Whitehouse if (*o == '\0') 1559e6e0a12SSteven Whitehouse continue; 1569e6e0a12SSteven Whitehouse 1579e6e0a12SSteven Whitehouse token = match_token(o, tokens, tmp); 1589e6e0a12SSteven Whitehouse switch (token) { 1599e6e0a12SSteven Whitehouse case Opt_lockproto: 1609e6e0a12SSteven Whitehouse match_strlcpy(args->ar_lockproto, &tmp[0], 1619e6e0a12SSteven Whitehouse GFS2_LOCKNAME_LEN); 1629e6e0a12SSteven Whitehouse break; 1639e6e0a12SSteven Whitehouse case Opt_locktable: 1649e6e0a12SSteven Whitehouse match_strlcpy(args->ar_locktable, &tmp[0], 1659e6e0a12SSteven Whitehouse GFS2_LOCKNAME_LEN); 1669e6e0a12SSteven Whitehouse break; 1679e6e0a12SSteven Whitehouse case Opt_hostdata: 1689e6e0a12SSteven Whitehouse match_strlcpy(args->ar_hostdata, &tmp[0], 1699e6e0a12SSteven Whitehouse GFS2_LOCKNAME_LEN); 1709e6e0a12SSteven Whitehouse break; 1719e6e0a12SSteven Whitehouse case Opt_spectator: 1729e6e0a12SSteven Whitehouse args->ar_spectator = 1; 1739e6e0a12SSteven Whitehouse break; 1749e6e0a12SSteven Whitehouse case Opt_ignore_local_fs: 175f57a024eSSteven Whitehouse /* Retained for backwards compat only */ 1769e6e0a12SSteven Whitehouse break; 1779e6e0a12SSteven Whitehouse case Opt_localflocks: 1789e6e0a12SSteven Whitehouse args->ar_localflocks = 1; 1799e6e0a12SSteven Whitehouse break; 1809e6e0a12SSteven Whitehouse case Opt_localcaching: 181c2048b00SSteven Whitehouse /* Retained for backwards compat only */ 1829e6e0a12SSteven Whitehouse break; 1839e6e0a12SSteven Whitehouse case Opt_debug: 184d34843d0SBob Peterson if (args->ar_errors == GFS2_ERRORS_PANIC) { 185d77d1b58SJoe Perches pr_warn("-o debug and -o errors=panic are mutually exclusive\n"); 186d34843d0SBob Peterson return -EINVAL; 187d34843d0SBob Peterson } 1889e6e0a12SSteven Whitehouse args->ar_debug = 1; 1899e6e0a12SSteven Whitehouse break; 1909e6e0a12SSteven Whitehouse case Opt_nodebug: 1919e6e0a12SSteven Whitehouse args->ar_debug = 0; 1929e6e0a12SSteven Whitehouse break; 1939e6e0a12SSteven Whitehouse case Opt_upgrade: 194c80dbb58SSteven Whitehouse /* Retained for backwards compat only */ 1959e6e0a12SSteven Whitehouse break; 1969e6e0a12SSteven Whitehouse case Opt_acl: 1979e6e0a12SSteven Whitehouse args->ar_posix_acl = 1; 1989e6e0a12SSteven Whitehouse break; 1999e6e0a12SSteven Whitehouse case Opt_noacl: 2009e6e0a12SSteven Whitehouse args->ar_posix_acl = 0; 2019e6e0a12SSteven Whitehouse break; 2029e6e0a12SSteven Whitehouse case Opt_quota_off: 2039e6e0a12SSteven Whitehouse case Opt_noquota: 2049e6e0a12SSteven Whitehouse args->ar_quota = GFS2_QUOTA_OFF; 2059e6e0a12SSteven Whitehouse break; 2069e6e0a12SSteven Whitehouse case Opt_quota_account: 2079e6e0a12SSteven Whitehouse args->ar_quota = GFS2_QUOTA_ACCOUNT; 2089e6e0a12SSteven Whitehouse break; 2099e6e0a12SSteven Whitehouse case Opt_quota_on: 2109e6e0a12SSteven Whitehouse case Opt_quota: 2119e6e0a12SSteven Whitehouse args->ar_quota = GFS2_QUOTA_ON; 2129e6e0a12SSteven Whitehouse break; 2139e6e0a12SSteven Whitehouse case Opt_suiddir: 2149e6e0a12SSteven Whitehouse args->ar_suiddir = 1; 2159e6e0a12SSteven Whitehouse break; 2169e6e0a12SSteven Whitehouse case Opt_nosuiddir: 2179e6e0a12SSteven Whitehouse args->ar_suiddir = 0; 2189e6e0a12SSteven Whitehouse break; 2199e6e0a12SSteven Whitehouse case Opt_data_writeback: 2209e6e0a12SSteven Whitehouse args->ar_data = GFS2_DATA_WRITEBACK; 2219e6e0a12SSteven Whitehouse break; 2229e6e0a12SSteven Whitehouse case Opt_data_ordered: 2239e6e0a12SSteven Whitehouse args->ar_data = GFS2_DATA_ORDERED; 2249e6e0a12SSteven Whitehouse break; 2259e6e0a12SSteven Whitehouse case Opt_meta: 2269e6e0a12SSteven Whitehouse args->ar_meta = 1; 2279e6e0a12SSteven Whitehouse break; 2289e6e0a12SSteven Whitehouse case Opt_discard: 2299e6e0a12SSteven Whitehouse args->ar_discard = 1; 2309e6e0a12SSteven Whitehouse break; 2319e6e0a12SSteven Whitehouse case Opt_nodiscard: 2329e6e0a12SSteven Whitehouse args->ar_discard = 0; 2339e6e0a12SSteven Whitehouse break; 2349e6e0a12SSteven Whitehouse case Opt_commit: 2359e6e0a12SSteven Whitehouse rv = match_int(&tmp[0], &args->ar_commit); 2369e6e0a12SSteven Whitehouse if (rv || args->ar_commit <= 0) { 237d77d1b58SJoe Perches pr_warn("commit mount option requires a positive numeric argument\n"); 2389e6e0a12SSteven Whitehouse return rv ? rv : -EINVAL; 2399e6e0a12SSteven Whitehouse } 2409e6e0a12SSteven Whitehouse break; 2413d3c10f2SBenjamin Marzinski case Opt_statfs_quantum: 2423d3c10f2SBenjamin Marzinski rv = match_int(&tmp[0], &args->ar_statfs_quantum); 2433d3c10f2SBenjamin Marzinski if (rv || args->ar_statfs_quantum < 0) { 244d77d1b58SJoe Perches pr_warn("statfs_quantum mount option requires a non-negative numeric argument\n"); 2453d3c10f2SBenjamin Marzinski return rv ? rv : -EINVAL; 2463d3c10f2SBenjamin Marzinski } 2473d3c10f2SBenjamin Marzinski break; 2483d3c10f2SBenjamin Marzinski case Opt_quota_quantum: 2493d3c10f2SBenjamin Marzinski rv = match_int(&tmp[0], &args->ar_quota_quantum); 2503d3c10f2SBenjamin Marzinski if (rv || args->ar_quota_quantum <= 0) { 251d77d1b58SJoe Perches pr_warn("quota_quantum mount option requires a positive numeric argument\n"); 2523d3c10f2SBenjamin Marzinski return rv ? rv : -EINVAL; 2533d3c10f2SBenjamin Marzinski } 2543d3c10f2SBenjamin Marzinski break; 2553d3c10f2SBenjamin Marzinski case Opt_statfs_percent: 2563d3c10f2SBenjamin Marzinski rv = match_int(&tmp[0], &args->ar_statfs_percent); 2573d3c10f2SBenjamin Marzinski if (rv || args->ar_statfs_percent < 0 || 2583d3c10f2SBenjamin Marzinski args->ar_statfs_percent > 100) { 259fc554ed3SFabian Frederick pr_warn("statfs_percent mount option requires a numeric argument between 0 and 100\n"); 2603d3c10f2SBenjamin Marzinski return rv ? rv : -EINVAL; 2613d3c10f2SBenjamin Marzinski } 2623d3c10f2SBenjamin Marzinski break; 263d34843d0SBob Peterson case Opt_err_withdraw: 264d34843d0SBob Peterson args->ar_errors = GFS2_ERRORS_WITHDRAW; 265d34843d0SBob Peterson break; 266d34843d0SBob Peterson case Opt_err_panic: 267d34843d0SBob Peterson if (args->ar_debug) { 268d77d1b58SJoe Perches pr_warn("-o debug and -o errors=panic are mutually exclusive\n"); 269d34843d0SBob Peterson return -EINVAL; 270d34843d0SBob Peterson } 271d34843d0SBob Peterson args->ar_errors = GFS2_ERRORS_PANIC; 272d34843d0SBob Peterson break; 273f25934c5SChristoph Hellwig case Opt_barrier: 274f25934c5SChristoph Hellwig args->ar_nobarrier = 0; 275f25934c5SChristoph Hellwig break; 276f25934c5SChristoph Hellwig case Opt_nobarrier: 277f25934c5SChristoph Hellwig args->ar_nobarrier = 1; 278f25934c5SChristoph Hellwig break; 27990306c41SBenjamin Marzinski case Opt_rgrplvb: 28090306c41SBenjamin Marzinski args->ar_rgrplvb = 1; 28190306c41SBenjamin Marzinski break; 28290306c41SBenjamin Marzinski case Opt_norgrplvb: 28390306c41SBenjamin Marzinski args->ar_rgrplvb = 0; 28490306c41SBenjamin Marzinski break; 285471f3db2SBenjamin Marzinski case Opt_loccookie: 286471f3db2SBenjamin Marzinski args->ar_loccookie = 1; 287471f3db2SBenjamin Marzinski break; 288471f3db2SBenjamin Marzinski case Opt_noloccookie: 289471f3db2SBenjamin Marzinski args->ar_loccookie = 0; 290471f3db2SBenjamin Marzinski break; 2919e6e0a12SSteven Whitehouse case Opt_error: 2929e6e0a12SSteven Whitehouse default: 293d77d1b58SJoe Perches pr_warn("invalid mount option: %s\n", o); 2949e6e0a12SSteven Whitehouse return -EINVAL; 2959e6e0a12SSteven Whitehouse } 2969e6e0a12SSteven Whitehouse } 2979e6e0a12SSteven Whitehouse 2989e6e0a12SSteven Whitehouse return 0; 2999e6e0a12SSteven Whitehouse } 300b3b94faaSDavid Teigland 301fefc03bfSSteven Whitehouse /** 302fefc03bfSSteven Whitehouse * gfs2_jindex_free - Clear all the journal index information 303fefc03bfSSteven Whitehouse * @sdp: The GFS2 superblock 304fefc03bfSSteven Whitehouse * 305fefc03bfSSteven Whitehouse */ 306fefc03bfSSteven Whitehouse 307fefc03bfSSteven Whitehouse void gfs2_jindex_free(struct gfs2_sbd *sdp) 308fefc03bfSSteven Whitehouse { 309b50f227bSSteven Whitehouse struct list_head list; 310fefc03bfSSteven Whitehouse struct gfs2_jdesc *jd; 311fefc03bfSSteven Whitehouse 312fefc03bfSSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 313fefc03bfSSteven Whitehouse list_add(&list, &sdp->sd_jindex_list); 314fefc03bfSSteven Whitehouse list_del_init(&sdp->sd_jindex_list); 315fefc03bfSSteven Whitehouse sdp->sd_journals = 0; 316fefc03bfSSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 317fefc03bfSSteven Whitehouse 318fefc03bfSSteven Whitehouse while (!list_empty(&list)) { 319fefc03bfSSteven Whitehouse jd = list_entry(list.next, struct gfs2_jdesc, jd_list); 320b50f227bSSteven Whitehouse gfs2_free_journal_extents(jd); 321fefc03bfSSteven Whitehouse list_del(&jd->jd_list); 322fefc03bfSSteven Whitehouse iput(jd->jd_inode); 323fefc03bfSSteven Whitehouse kfree(jd); 324fefc03bfSSteven Whitehouse } 325fefc03bfSSteven Whitehouse } 326fefc03bfSSteven Whitehouse 327b3b94faaSDavid Teigland static struct gfs2_jdesc *jdesc_find_i(struct list_head *head, unsigned int jid) 328b3b94faaSDavid Teigland { 329b3b94faaSDavid Teigland struct gfs2_jdesc *jd; 330b3b94faaSDavid Teigland int found = 0; 331b3b94faaSDavid Teigland 332b3b94faaSDavid Teigland list_for_each_entry(jd, head, jd_list) { 333b3b94faaSDavid Teigland if (jd->jd_jid == jid) { 334b3b94faaSDavid Teigland found = 1; 335b3b94faaSDavid Teigland break; 336b3b94faaSDavid Teigland } 337b3b94faaSDavid Teigland } 338b3b94faaSDavid Teigland 339b3b94faaSDavid Teigland if (!found) 340b3b94faaSDavid Teigland jd = NULL; 341b3b94faaSDavid Teigland 342b3b94faaSDavid Teigland return jd; 343b3b94faaSDavid Teigland } 344b3b94faaSDavid Teigland 345b3b94faaSDavid Teigland struct gfs2_jdesc *gfs2_jdesc_find(struct gfs2_sbd *sdp, unsigned int jid) 346b3b94faaSDavid Teigland { 347b3b94faaSDavid Teigland struct gfs2_jdesc *jd; 348b3b94faaSDavid Teigland 349b3b94faaSDavid Teigland spin_lock(&sdp->sd_jindex_spin); 350b3b94faaSDavid Teigland jd = jdesc_find_i(&sdp->sd_jindex_list, jid); 351b3b94faaSDavid Teigland spin_unlock(&sdp->sd_jindex_spin); 352b3b94faaSDavid Teigland 353b3b94faaSDavid Teigland return jd; 354b3b94faaSDavid Teigland } 355b3b94faaSDavid Teigland 356b3b94faaSDavid Teigland int gfs2_jdesc_check(struct gfs2_jdesc *jd) 357b3b94faaSDavid Teigland { 358feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 359feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 360a2e0f799SSteven Whitehouse u64 size = i_size_read(jd->jd_inode); 361b3b94faaSDavid Teigland 362a2e0f799SSteven Whitehouse if (gfs2_check_internal_file_size(jd->jd_inode, 8 << 20, 1 << 30)) 363b3b94faaSDavid Teigland return -EIO; 364b3b94faaSDavid Teigland 365a2e0f799SSteven Whitehouse jd->jd_blocks = size >> sdp->sd_sb.sb_bsize_shift; 366a2e0f799SSteven Whitehouse 367a2e0f799SSteven Whitehouse if (gfs2_write_alloc_required(ip, 0, size)) { 368b3b94faaSDavid Teigland gfs2_consist_inode(ip); 369461cb419SBob Peterson return -EIO; 370b3b94faaSDavid Teigland } 371b3b94faaSDavid Teigland 372461cb419SBob Peterson return 0; 373b3b94faaSDavid Teigland } 374b3b94faaSDavid Teigland 3758ad151c2SSteven Whitehouse static int init_threads(struct gfs2_sbd *sdp) 3768ad151c2SSteven Whitehouse { 3778ad151c2SSteven Whitehouse struct task_struct *p; 3788ad151c2SSteven Whitehouse int error = 0; 3798ad151c2SSteven Whitehouse 3808ad151c2SSteven Whitehouse p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); 3818ad151c2SSteven Whitehouse if (IS_ERR(p)) { 3828ad151c2SSteven Whitehouse error = PTR_ERR(p); 3838ad151c2SSteven Whitehouse fs_err(sdp, "can't start logd thread: %d\n", error); 3848ad151c2SSteven Whitehouse return error; 3858ad151c2SSteven Whitehouse } 3868ad151c2SSteven Whitehouse sdp->sd_logd_process = p; 3878ad151c2SSteven Whitehouse 3888ad151c2SSteven Whitehouse p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); 3898ad151c2SSteven Whitehouse if (IS_ERR(p)) { 3908ad151c2SSteven Whitehouse error = PTR_ERR(p); 3918ad151c2SSteven Whitehouse fs_err(sdp, "can't start quotad thread: %d\n", error); 3928ad151c2SSteven Whitehouse goto fail; 3938ad151c2SSteven Whitehouse } 3948ad151c2SSteven Whitehouse sdp->sd_quotad_process = p; 3958ad151c2SSteven Whitehouse return 0; 3968ad151c2SSteven Whitehouse 3978ad151c2SSteven Whitehouse fail: 3988ad151c2SSteven Whitehouse kthread_stop(sdp->sd_logd_process); 3998ad151c2SSteven Whitehouse return error; 4008ad151c2SSteven Whitehouse } 4018ad151c2SSteven Whitehouse 402b3b94faaSDavid Teigland /** 403b3b94faaSDavid Teigland * gfs2_make_fs_rw - Turn a Read-Only FS into a Read-Write one 404b3b94faaSDavid Teigland * @sdp: the filesystem 405b3b94faaSDavid Teigland * 406b3b94faaSDavid Teigland * Returns: errno 407b3b94faaSDavid Teigland */ 408b3b94faaSDavid Teigland 409b3b94faaSDavid Teigland int gfs2_make_fs_rw(struct gfs2_sbd *sdp) 410b3b94faaSDavid Teigland { 411feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); 4125c676f6dSSteven Whitehouse struct gfs2_glock *j_gl = ip->i_gl; 4132e60d768SBenjamin Marzinski struct gfs2_holder freeze_gh; 41455167622SAl Viro struct gfs2_log_header_host head; 415b3b94faaSDavid Teigland int error; 416b3b94faaSDavid Teigland 4178ad151c2SSteven Whitehouse error = init_threads(sdp); 418b3b94faaSDavid Teigland if (error) 419b3b94faaSDavid Teigland return error; 420b3b94faaSDavid Teigland 42124972557SBenjamin Marzinski error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_SHARED, 0, 4222e60d768SBenjamin Marzinski &freeze_gh); 4238ad151c2SSteven Whitehouse if (error) 4248ad151c2SSteven Whitehouse goto fail_threads; 4258ad151c2SSteven Whitehouse 4261a14d3a6SSteven Whitehouse j_gl->gl_ops->go_inval(j_gl, DIO_METADATA); 427b3b94faaSDavid Teigland 428b3b94faaSDavid Teigland error = gfs2_find_jhead(sdp->sd_jdesc, &head); 429b3b94faaSDavid Teigland if (error) 430b3b94faaSDavid Teigland goto fail; 431b3b94faaSDavid Teigland 432b3b94faaSDavid Teigland if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) { 433b3b94faaSDavid Teigland gfs2_consist(sdp); 434b3b94faaSDavid Teigland error = -EIO; 435b3b94faaSDavid Teigland goto fail; 436b3b94faaSDavid Teigland } 437b3b94faaSDavid Teigland 438b3b94faaSDavid Teigland /* Initialize some head of the log stuff */ 439b3b94faaSDavid Teigland sdp->sd_log_sequence = head.lh_sequence + 1; 440b3b94faaSDavid Teigland gfs2_log_pointers_init(sdp, head.lh_blkno); 441b3b94faaSDavid Teigland 442b3b94faaSDavid Teigland error = gfs2_quota_init(sdp); 443b3b94faaSDavid Teigland if (error) 444a91ea69fSSteven Whitehouse goto fail; 445b3b94faaSDavid Teigland 446b3b94faaSDavid Teigland set_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); 447b3b94faaSDavid Teigland 4482e60d768SBenjamin Marzinski gfs2_glock_dq_uninit(&freeze_gh); 449b3b94faaSDavid Teigland 450b3b94faaSDavid Teigland return 0; 451b3b94faaSDavid Teigland 452b3b94faaSDavid Teigland fail: 4532e60d768SBenjamin Marzinski freeze_gh.gh_flags |= GL_NOCACHE; 4542e60d768SBenjamin Marzinski gfs2_glock_dq_uninit(&freeze_gh); 4558ad151c2SSteven Whitehouse fail_threads: 4568ad151c2SSteven Whitehouse kthread_stop(sdp->sd_quotad_process); 4578ad151c2SSteven Whitehouse kthread_stop(sdp->sd_logd_process); 458b3b94faaSDavid Teigland return error; 459b3b94faaSDavid Teigland } 460b3b94faaSDavid Teigland 4611946f70aSBenjamin Marzinski void gfs2_statfs_change_in(struct gfs2_statfs_change_host *sc, const void *buf) 462bb8d8a6fSSteven Whitehouse { 463bb8d8a6fSSteven Whitehouse const struct gfs2_statfs_change *str = buf; 464bb8d8a6fSSteven Whitehouse 465bb8d8a6fSSteven Whitehouse sc->sc_total = be64_to_cpu(str->sc_total); 466bb8d8a6fSSteven Whitehouse sc->sc_free = be64_to_cpu(str->sc_free); 467bb8d8a6fSSteven Whitehouse sc->sc_dinodes = be64_to_cpu(str->sc_dinodes); 468bb8d8a6fSSteven Whitehouse } 469bb8d8a6fSSteven Whitehouse 470bb8d8a6fSSteven Whitehouse static void gfs2_statfs_change_out(const struct gfs2_statfs_change_host *sc, void *buf) 471bb8d8a6fSSteven Whitehouse { 472bb8d8a6fSSteven Whitehouse struct gfs2_statfs_change *str = buf; 473bb8d8a6fSSteven Whitehouse 474bb8d8a6fSSteven Whitehouse str->sc_total = cpu_to_be64(sc->sc_total); 475bb8d8a6fSSteven Whitehouse str->sc_free = cpu_to_be64(sc->sc_free); 476bb8d8a6fSSteven Whitehouse str->sc_dinodes = cpu_to_be64(sc->sc_dinodes); 477bb8d8a6fSSteven Whitehouse } 478bb8d8a6fSSteven Whitehouse 479b3b94faaSDavid Teigland int gfs2_statfs_init(struct gfs2_sbd *sdp) 480b3b94faaSDavid Teigland { 481feaa7bbaSSteven Whitehouse struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode); 482bd209cc0SAl Viro struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; 483feaa7bbaSSteven Whitehouse struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); 484bd209cc0SAl Viro struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; 485b3b94faaSDavid Teigland struct buffer_head *m_bh, *l_bh; 486b3b94faaSDavid Teigland struct gfs2_holder gh; 487b3b94faaSDavid Teigland int error; 488b3b94faaSDavid Teigland 489b3b94faaSDavid Teigland error = gfs2_glock_nq_init(m_ip->i_gl, LM_ST_EXCLUSIVE, GL_NOCACHE, 490b3b94faaSDavid Teigland &gh); 491b3b94faaSDavid Teigland if (error) 492b3b94faaSDavid Teigland return error; 493b3b94faaSDavid Teigland 494b3b94faaSDavid Teigland error = gfs2_meta_inode_buffer(m_ip, &m_bh); 495b3b94faaSDavid Teigland if (error) 496b3b94faaSDavid Teigland goto out; 497b3b94faaSDavid Teigland 498b3b94faaSDavid Teigland if (sdp->sd_args.ar_spectator) { 499b3b94faaSDavid Teigland spin_lock(&sdp->sd_statfs_spin); 500b3b94faaSDavid Teigland gfs2_statfs_change_in(m_sc, m_bh->b_data + 501b3b94faaSDavid Teigland sizeof(struct gfs2_dinode)); 502b3b94faaSDavid Teigland spin_unlock(&sdp->sd_statfs_spin); 503b3b94faaSDavid Teigland } else { 504b3b94faaSDavid Teigland error = gfs2_meta_inode_buffer(l_ip, &l_bh); 505b3b94faaSDavid Teigland if (error) 506b3b94faaSDavid Teigland goto out_m_bh; 507b3b94faaSDavid Teigland 508b3b94faaSDavid Teigland spin_lock(&sdp->sd_statfs_spin); 509b3b94faaSDavid Teigland gfs2_statfs_change_in(m_sc, m_bh->b_data + 510b3b94faaSDavid Teigland sizeof(struct gfs2_dinode)); 511b3b94faaSDavid Teigland gfs2_statfs_change_in(l_sc, l_bh->b_data + 512b3b94faaSDavid Teigland sizeof(struct gfs2_dinode)); 513b3b94faaSDavid Teigland spin_unlock(&sdp->sd_statfs_spin); 514b3b94faaSDavid Teigland 515b3b94faaSDavid Teigland brelse(l_bh); 516b3b94faaSDavid Teigland } 517b3b94faaSDavid Teigland 518b3b94faaSDavid Teigland out_m_bh: 519b3b94faaSDavid Teigland brelse(m_bh); 520b3b94faaSDavid Teigland out: 521b3b94faaSDavid Teigland gfs2_glock_dq_uninit(&gh); 522b3b94faaSDavid Teigland return 0; 523b3b94faaSDavid Teigland } 524b3b94faaSDavid Teigland 525cd915493SSteven Whitehouse void gfs2_statfs_change(struct gfs2_sbd *sdp, s64 total, s64 free, 526cd915493SSteven Whitehouse s64 dinodes) 527b3b94faaSDavid Teigland { 528feaa7bbaSSteven Whitehouse struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); 529bd209cc0SAl Viro struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; 5303d3c10f2SBenjamin Marzinski struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; 531b3b94faaSDavid Teigland struct buffer_head *l_bh; 532c14f5735SBenjamin Marzinski s64 x, y; 533c14f5735SBenjamin Marzinski int need_sync = 0; 534b3b94faaSDavid Teigland int error; 535b3b94faaSDavid Teigland 536b3b94faaSDavid Teigland error = gfs2_meta_inode_buffer(l_ip, &l_bh); 537b3b94faaSDavid Teigland if (error) 538b3b94faaSDavid Teigland return; 539b3b94faaSDavid Teigland 540350a9b0aSSteven Whitehouse gfs2_trans_add_meta(l_ip->i_gl, l_bh); 541b3b94faaSDavid Teigland 542b3b94faaSDavid Teigland spin_lock(&sdp->sd_statfs_spin); 543b3b94faaSDavid Teigland l_sc->sc_total += total; 544b3b94faaSDavid Teigland l_sc->sc_free += free; 545b3b94faaSDavid Teigland l_sc->sc_dinodes += dinodes; 546907b9bceSSteven Whitehouse gfs2_statfs_change_out(l_sc, l_bh->b_data + sizeof(struct gfs2_dinode)); 547c14f5735SBenjamin Marzinski if (sdp->sd_args.ar_statfs_percent) { 548c14f5735SBenjamin Marzinski x = 100 * l_sc->sc_free; 549c14f5735SBenjamin Marzinski y = m_sc->sc_free * sdp->sd_args.ar_statfs_percent; 550c14f5735SBenjamin Marzinski if (x >= y || x <= -y) 551c14f5735SBenjamin Marzinski need_sync = 1; 552c14f5735SBenjamin Marzinski } 553b3b94faaSDavid Teigland spin_unlock(&sdp->sd_statfs_spin); 554b3b94faaSDavid Teigland 555b3b94faaSDavid Teigland brelse(l_bh); 556c14f5735SBenjamin Marzinski if (need_sync) 5573d3c10f2SBenjamin Marzinski gfs2_wake_up_statfs(sdp); 558b3b94faaSDavid Teigland } 559b3b94faaSDavid Teigland 5601946f70aSBenjamin Marzinski void update_statfs(struct gfs2_sbd *sdp, struct buffer_head *m_bh, 5611946f70aSBenjamin Marzinski struct buffer_head *l_bh) 5621946f70aSBenjamin Marzinski { 5631946f70aSBenjamin Marzinski struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode); 5641946f70aSBenjamin Marzinski struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); 5651946f70aSBenjamin Marzinski struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; 5661946f70aSBenjamin Marzinski struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; 5671946f70aSBenjamin Marzinski 568350a9b0aSSteven Whitehouse gfs2_trans_add_meta(l_ip->i_gl, l_bh); 569901c6c66SBob Peterson gfs2_trans_add_meta(m_ip->i_gl, m_bh); 5701946f70aSBenjamin Marzinski 5711946f70aSBenjamin Marzinski spin_lock(&sdp->sd_statfs_spin); 5721946f70aSBenjamin Marzinski m_sc->sc_total += l_sc->sc_total; 5731946f70aSBenjamin Marzinski m_sc->sc_free += l_sc->sc_free; 5741946f70aSBenjamin Marzinski m_sc->sc_dinodes += l_sc->sc_dinodes; 5751946f70aSBenjamin Marzinski memset(l_sc, 0, sizeof(struct gfs2_statfs_change)); 5761946f70aSBenjamin Marzinski memset(l_bh->b_data + sizeof(struct gfs2_dinode), 5771946f70aSBenjamin Marzinski 0, sizeof(struct gfs2_statfs_change)); 5781946f70aSBenjamin Marzinski gfs2_statfs_change_out(m_sc, m_bh->b_data + sizeof(struct gfs2_dinode)); 579901c6c66SBob Peterson spin_unlock(&sdp->sd_statfs_spin); 5801946f70aSBenjamin Marzinski } 5811946f70aSBenjamin Marzinski 5828c42d637SSteven Whitehouse int gfs2_statfs_sync(struct super_block *sb, int type) 583b3b94faaSDavid Teigland { 5848c42d637SSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 585feaa7bbaSSteven Whitehouse struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode); 586feaa7bbaSSteven Whitehouse struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); 587bd209cc0SAl Viro struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; 588bd209cc0SAl Viro struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; 589b3b94faaSDavid Teigland struct gfs2_holder gh; 590b3b94faaSDavid Teigland struct buffer_head *m_bh, *l_bh; 591b3b94faaSDavid Teigland int error; 592b3b94faaSDavid Teigland 5932e60d768SBenjamin Marzinski sb_start_write(sb); 594b3b94faaSDavid Teigland error = gfs2_glock_nq_init(m_ip->i_gl, LM_ST_EXCLUSIVE, GL_NOCACHE, 595b3b94faaSDavid Teigland &gh); 596b3b94faaSDavid Teigland if (error) 5972e60d768SBenjamin Marzinski goto out; 598b3b94faaSDavid Teigland 599b3b94faaSDavid Teigland error = gfs2_meta_inode_buffer(m_ip, &m_bh); 600b3b94faaSDavid Teigland if (error) 6012e60d768SBenjamin Marzinski goto out_unlock; 602b3b94faaSDavid Teigland 603b3b94faaSDavid Teigland spin_lock(&sdp->sd_statfs_spin); 604b3b94faaSDavid Teigland gfs2_statfs_change_in(m_sc, m_bh->b_data + 605b3b94faaSDavid Teigland sizeof(struct gfs2_dinode)); 606b3b94faaSDavid Teigland if (!l_sc->sc_total && !l_sc->sc_free && !l_sc->sc_dinodes) { 607b3b94faaSDavid Teigland spin_unlock(&sdp->sd_statfs_spin); 608b3b94faaSDavid Teigland goto out_bh; 609b3b94faaSDavid Teigland } 610b3b94faaSDavid Teigland spin_unlock(&sdp->sd_statfs_spin); 611b3b94faaSDavid Teigland 612b3b94faaSDavid Teigland error = gfs2_meta_inode_buffer(l_ip, &l_bh); 613b3b94faaSDavid Teigland if (error) 614b3b94faaSDavid Teigland goto out_bh; 615b3b94faaSDavid Teigland 616b3b94faaSDavid Teigland error = gfs2_trans_begin(sdp, 2 * RES_DINODE, 0); 617b3b94faaSDavid Teigland if (error) 618b3b94faaSDavid Teigland goto out_bh2; 619b3b94faaSDavid Teigland 6201946f70aSBenjamin Marzinski update_statfs(sdp, m_bh, l_bh); 6213d3c10f2SBenjamin Marzinski sdp->sd_statfs_force_sync = 0; 622b3b94faaSDavid Teigland 623b3b94faaSDavid Teigland gfs2_trans_end(sdp); 624b3b94faaSDavid Teigland 625b3b94faaSDavid Teigland out_bh2: 626b3b94faaSDavid Teigland brelse(l_bh); 627b3b94faaSDavid Teigland out_bh: 628b3b94faaSDavid Teigland brelse(m_bh); 6292e60d768SBenjamin Marzinski out_unlock: 630b3b94faaSDavid Teigland gfs2_glock_dq_uninit(&gh); 6312e60d768SBenjamin Marzinski out: 6322e60d768SBenjamin Marzinski sb_end_write(sb); 633b3b94faaSDavid Teigland return error; 634b3b94faaSDavid Teigland } 635b3b94faaSDavid Teigland 636b3b94faaSDavid Teigland struct lfcc { 637b3b94faaSDavid Teigland struct list_head list; 638b3b94faaSDavid Teigland struct gfs2_holder gh; 639b3b94faaSDavid Teigland }; 640b3b94faaSDavid Teigland 641b3b94faaSDavid Teigland /** 642b3b94faaSDavid Teigland * gfs2_lock_fs_check_clean - Stop all writes to the FS and check that all 643b3b94faaSDavid Teigland * journals are clean 644b3b94faaSDavid Teigland * @sdp: the file system 645b3b94faaSDavid Teigland * @state: the state to put the transaction lock into 646b3b94faaSDavid Teigland * @t_gh: the hold on the transaction lock 647b3b94faaSDavid Teigland * 648b3b94faaSDavid Teigland * Returns: errno 649b3b94faaSDavid Teigland */ 650b3b94faaSDavid Teigland 65108bc2dbcSAdrian Bunk static int gfs2_lock_fs_check_clean(struct gfs2_sbd *sdp, 65224972557SBenjamin Marzinski struct gfs2_holder *freeze_gh) 653b3b94faaSDavid Teigland { 6545c676f6dSSteven Whitehouse struct gfs2_inode *ip; 655b3b94faaSDavid Teigland struct gfs2_jdesc *jd; 656b3b94faaSDavid Teigland struct lfcc *lfcc; 657b3b94faaSDavid Teigland LIST_HEAD(list); 65855167622SAl Viro struct gfs2_log_header_host lh; 659b3b94faaSDavid Teigland int error; 660b3b94faaSDavid Teigland 661b3b94faaSDavid Teigland list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { 662b3b94faaSDavid Teigland lfcc = kmalloc(sizeof(struct lfcc), GFP_KERNEL); 663b3b94faaSDavid Teigland if (!lfcc) { 664b3b94faaSDavid Teigland error = -ENOMEM; 665b3b94faaSDavid Teigland goto out; 666b3b94faaSDavid Teigland } 667feaa7bbaSSteven Whitehouse ip = GFS2_I(jd->jd_inode); 668feaa7bbaSSteven Whitehouse error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &lfcc->gh); 669b3b94faaSDavid Teigland if (error) { 670b3b94faaSDavid Teigland kfree(lfcc); 671b3b94faaSDavid Teigland goto out; 672b3b94faaSDavid Teigland } 673b3b94faaSDavid Teigland list_add(&lfcc->list, &list); 674b3b94faaSDavid Teigland } 675b3b94faaSDavid Teigland 67624972557SBenjamin Marzinski error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_EXCLUSIVE, 67724972557SBenjamin Marzinski GL_NOCACHE, freeze_gh); 678b3b94faaSDavid Teigland 679b3b94faaSDavid Teigland list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { 680b3b94faaSDavid Teigland error = gfs2_jdesc_check(jd); 681b3b94faaSDavid Teigland if (error) 682b3b94faaSDavid Teigland break; 683b3b94faaSDavid Teigland error = gfs2_find_jhead(jd, &lh); 684b3b94faaSDavid Teigland if (error) 685b3b94faaSDavid Teigland break; 686b3b94faaSDavid Teigland if (!(lh.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) { 687b3b94faaSDavid Teigland error = -EBUSY; 688b3b94faaSDavid Teigland break; 689b3b94faaSDavid Teigland } 690b3b94faaSDavid Teigland } 691b3b94faaSDavid Teigland 692b3b94faaSDavid Teigland if (error) 69324972557SBenjamin Marzinski gfs2_glock_dq_uninit(freeze_gh); 694b3b94faaSDavid Teigland 695b3b94faaSDavid Teigland out: 696b3b94faaSDavid Teigland while (!list_empty(&list)) { 697b3b94faaSDavid Teigland lfcc = list_entry(list.next, struct lfcc, list); 698b3b94faaSDavid Teigland list_del(&lfcc->list); 699b3b94faaSDavid Teigland gfs2_glock_dq_uninit(&lfcc->gh); 700b3b94faaSDavid Teigland kfree(lfcc); 701b3b94faaSDavid Teigland } 702b3b94faaSDavid Teigland return error; 703b3b94faaSDavid Teigland } 704b3b94faaSDavid Teigland 7059eed04cdSSteven Whitehouse void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf) 7069eed04cdSSteven Whitehouse { 7079eed04cdSSteven Whitehouse struct gfs2_dinode *str = buf; 7089eed04cdSSteven Whitehouse 7099eed04cdSSteven Whitehouse str->di_header.mh_magic = cpu_to_be32(GFS2_MAGIC); 7109eed04cdSSteven Whitehouse str->di_header.mh_type = cpu_to_be32(GFS2_METATYPE_DI); 7119eed04cdSSteven Whitehouse str->di_header.mh_format = cpu_to_be32(GFS2_FORMAT_DI); 7129eed04cdSSteven Whitehouse str->di_num.no_addr = cpu_to_be64(ip->i_no_addr); 7139eed04cdSSteven Whitehouse str->di_num.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino); 7149eed04cdSSteven Whitehouse str->di_mode = cpu_to_be32(ip->i_inode.i_mode); 715d0546426SEric W. Biederman str->di_uid = cpu_to_be32(i_uid_read(&ip->i_inode)); 716d0546426SEric W. Biederman str->di_gid = cpu_to_be32(i_gid_read(&ip->i_inode)); 7179eed04cdSSteven Whitehouse str->di_nlink = cpu_to_be32(ip->i_inode.i_nlink); 7189eed04cdSSteven Whitehouse str->di_size = cpu_to_be64(i_size_read(&ip->i_inode)); 7199eed04cdSSteven Whitehouse str->di_blocks = cpu_to_be64(gfs2_get_inode_blocks(&ip->i_inode)); 7209eed04cdSSteven Whitehouse str->di_atime = cpu_to_be64(ip->i_inode.i_atime.tv_sec); 7219eed04cdSSteven Whitehouse str->di_mtime = cpu_to_be64(ip->i_inode.i_mtime.tv_sec); 7229eed04cdSSteven Whitehouse str->di_ctime = cpu_to_be64(ip->i_inode.i_ctime.tv_sec); 7239eed04cdSSteven Whitehouse 7249eed04cdSSteven Whitehouse str->di_goal_meta = cpu_to_be64(ip->i_goal); 7259eed04cdSSteven Whitehouse str->di_goal_data = cpu_to_be64(ip->i_goal); 7269eed04cdSSteven Whitehouse str->di_generation = cpu_to_be64(ip->i_generation); 7279eed04cdSSteven Whitehouse 7289eed04cdSSteven Whitehouse str->di_flags = cpu_to_be32(ip->i_diskflags); 7299eed04cdSSteven Whitehouse str->di_height = cpu_to_be16(ip->i_height); 7309eed04cdSSteven Whitehouse str->di_payload_format = cpu_to_be32(S_ISDIR(ip->i_inode.i_mode) && 7319eed04cdSSteven Whitehouse !(ip->i_diskflags & GFS2_DIF_EXHASH) ? 7329eed04cdSSteven Whitehouse GFS2_FORMAT_DE : 0); 7339eed04cdSSteven Whitehouse str->di_depth = cpu_to_be16(ip->i_depth); 7349eed04cdSSteven Whitehouse str->di_entries = cpu_to_be32(ip->i_entries); 7359eed04cdSSteven Whitehouse 7369eed04cdSSteven Whitehouse str->di_eattr = cpu_to_be64(ip->i_eattr); 7379eed04cdSSteven Whitehouse str->di_atime_nsec = cpu_to_be32(ip->i_inode.i_atime.tv_nsec); 7389eed04cdSSteven Whitehouse str->di_mtime_nsec = cpu_to_be32(ip->i_inode.i_mtime.tv_nsec); 7399eed04cdSSteven Whitehouse str->di_ctime_nsec = cpu_to_be32(ip->i_inode.i_ctime.tv_nsec); 7409eed04cdSSteven Whitehouse } 7419e6e0a12SSteven Whitehouse 7429e6e0a12SSteven Whitehouse /** 7439e6e0a12SSteven Whitehouse * gfs2_write_inode - Make sure the inode is stable on the disk 7449e6e0a12SSteven Whitehouse * @inode: The inode 7451027efaaSSteven Whitehouse * @wbc: The writeback control structure 7469e6e0a12SSteven Whitehouse * 7479e6e0a12SSteven Whitehouse * Returns: errno 7489e6e0a12SSteven Whitehouse */ 7499e6e0a12SSteven Whitehouse 750a9185b41SChristoph Hellwig static int gfs2_write_inode(struct inode *inode, struct writeback_control *wbc) 7519e6e0a12SSteven Whitehouse { 7529e6e0a12SSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 7539e6e0a12SSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(inode); 7541027efaaSSteven Whitehouse struct address_space *metamapping = gfs2_glock2aspace(ip->i_gl); 755de1414a6SChristoph Hellwig struct backing_dev_info *bdi = inode_to_bdi(metamapping->host); 756ab9bbda0SSteven Whitehouse int ret = 0; 7579e6e0a12SSteven Whitehouse 758a9185b41SChristoph Hellwig if (wbc->sync_mode == WB_SYNC_ALL) 75924972557SBenjamin Marzinski gfs2_log_flush(GFS2_SB(inode), ip->i_gl, NORMAL_FLUSH); 760a88a341aSTejun Heo if (bdi->wb.dirty_exceeded) 7614667a0ecSSteven Whitehouse gfs2_ail1_flush(sdp, wbc); 7621d4ec642SSteven Whitehouse else 7631d4ec642SSteven Whitehouse filemap_fdatawrite(metamapping); 764ab9bbda0SSteven Whitehouse if (wbc->sync_mode == WB_SYNC_ALL) 7651027efaaSSteven Whitehouse ret = filemap_fdatawait(metamapping); 7661027efaaSSteven Whitehouse if (ret) 7671027efaaSSteven Whitehouse mark_inode_dirty_sync(inode); 7689e6e0a12SSteven Whitehouse return ret; 7699e6e0a12SSteven Whitehouse } 7709e6e0a12SSteven Whitehouse 7719e6e0a12SSteven Whitehouse /** 772ab9bbda0SSteven Whitehouse * gfs2_dirty_inode - check for atime updates 773ab9bbda0SSteven Whitehouse * @inode: The inode in question 774ab9bbda0SSteven Whitehouse * @flags: The type of dirty 775ab9bbda0SSteven Whitehouse * 776ab9bbda0SSteven Whitehouse * Unfortunately it can be called under any combination of inode 777ab9bbda0SSteven Whitehouse * glock and transaction lock, so we have to check carefully. 778ab9bbda0SSteven Whitehouse * 779ab9bbda0SSteven Whitehouse * At the moment this deals only with atime - it should be possible 780ab9bbda0SSteven Whitehouse * to expand that role in future, once a review of the locking has 781ab9bbda0SSteven Whitehouse * been carried out. 782ab9bbda0SSteven Whitehouse */ 783ab9bbda0SSteven Whitehouse 784ab9bbda0SSteven Whitehouse static void gfs2_dirty_inode(struct inode *inode, int flags) 785ab9bbda0SSteven Whitehouse { 786ab9bbda0SSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 787ab9bbda0SSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(inode); 788ab9bbda0SSteven Whitehouse struct buffer_head *bh; 789ab9bbda0SSteven Whitehouse struct gfs2_holder gh; 790ab9bbda0SSteven Whitehouse int need_unlock = 0; 791ab9bbda0SSteven Whitehouse int need_endtrans = 0; 792ab9bbda0SSteven Whitehouse int ret; 793ab9bbda0SSteven Whitehouse 794ab9bbda0SSteven Whitehouse if (!(flags & (I_DIRTY_DATASYNC|I_DIRTY_SYNC))) 795ab9bbda0SSteven Whitehouse return; 796ab9bbda0SSteven Whitehouse 797ab9bbda0SSteven Whitehouse if (!gfs2_glock_is_locked_by_me(ip->i_gl)) { 798ab9bbda0SSteven Whitehouse ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh); 799ab9bbda0SSteven Whitehouse if (ret) { 800ab9bbda0SSteven Whitehouse fs_err(sdp, "dirty_inode: glock %d\n", ret); 801ab9bbda0SSteven Whitehouse return; 802ab9bbda0SSteven Whitehouse } 803ab9bbda0SSteven Whitehouse need_unlock = 1; 8043d162688SBenjamin Marzinski } else if (WARN_ON_ONCE(ip->i_gl->gl_state != LM_ST_EXCLUSIVE)) 8053d162688SBenjamin Marzinski return; 806ab9bbda0SSteven Whitehouse 807ab9bbda0SSteven Whitehouse if (current->journal_info == NULL) { 808ab9bbda0SSteven Whitehouse ret = gfs2_trans_begin(sdp, RES_DINODE, 0); 809ab9bbda0SSteven Whitehouse if (ret) { 810ab9bbda0SSteven Whitehouse fs_err(sdp, "dirty_inode: gfs2_trans_begin %d\n", ret); 811ab9bbda0SSteven Whitehouse goto out; 812ab9bbda0SSteven Whitehouse } 813ab9bbda0SSteven Whitehouse need_endtrans = 1; 814ab9bbda0SSteven Whitehouse } 815ab9bbda0SSteven Whitehouse 816ab9bbda0SSteven Whitehouse ret = gfs2_meta_inode_buffer(ip, &bh); 817ab9bbda0SSteven Whitehouse if (ret == 0) { 818350a9b0aSSteven Whitehouse gfs2_trans_add_meta(ip->i_gl, bh); 819ab9bbda0SSteven Whitehouse gfs2_dinode_out(ip, bh->b_data); 820ab9bbda0SSteven Whitehouse brelse(bh); 821ab9bbda0SSteven Whitehouse } 822ab9bbda0SSteven Whitehouse 823ab9bbda0SSteven Whitehouse if (need_endtrans) 824ab9bbda0SSteven Whitehouse gfs2_trans_end(sdp); 825ab9bbda0SSteven Whitehouse out: 826ab9bbda0SSteven Whitehouse if (need_unlock) 827ab9bbda0SSteven Whitehouse gfs2_glock_dq_uninit(&gh); 828ab9bbda0SSteven Whitehouse } 829ab9bbda0SSteven Whitehouse 830ab9bbda0SSteven Whitehouse /** 8319e6e0a12SSteven Whitehouse * gfs2_make_fs_ro - Turn a Read-Write FS into a Read-Only one 8329e6e0a12SSteven Whitehouse * @sdp: the filesystem 8339e6e0a12SSteven Whitehouse * 8349e6e0a12SSteven Whitehouse * Returns: errno 8359e6e0a12SSteven Whitehouse */ 8369e6e0a12SSteven Whitehouse 8379e6e0a12SSteven Whitehouse static int gfs2_make_fs_ro(struct gfs2_sbd *sdp) 8389e6e0a12SSteven Whitehouse { 8392e60d768SBenjamin Marzinski struct gfs2_holder freeze_gh; 8409e6e0a12SSteven Whitehouse int error; 8419e6e0a12SSteven Whitehouse 84224972557SBenjamin Marzinski error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_SHARED, GL_NOCACHE, 8432e60d768SBenjamin Marzinski &freeze_gh); 84424972557SBenjamin Marzinski if (error && !test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) 84524972557SBenjamin Marzinski return error; 84624972557SBenjamin Marzinski 8478ad151c2SSteven Whitehouse kthread_stop(sdp->sd_quotad_process); 8488ad151c2SSteven Whitehouse kthread_stop(sdp->sd_logd_process); 8498ad151c2SSteven Whitehouse 850b94a170eSBenjamin Marzinski flush_workqueue(gfs2_delete_workqueue); 851ceed1723SJan Kara gfs2_quota_sync(sdp->sd_vfs, 0); 8528c42d637SSteven Whitehouse gfs2_statfs_sync(sdp->sd_vfs, 0); 8539e6e0a12SSteven Whitehouse 85424972557SBenjamin Marzinski gfs2_log_flush(sdp, NULL, SHUTDOWN_FLUSH); 8552e60d768SBenjamin Marzinski wait_event(sdp->sd_reserving_log_wait, atomic_read(&sdp->sd_reserving_log) == 0); 85624972557SBenjamin Marzinski gfs2_assert_warn(sdp, atomic_read(&sdp->sd_log_blks_free) == sdp->sd_jdesc->jd_blocks); 8579e6e0a12SSteven Whitehouse 8582e60d768SBenjamin Marzinski if (freeze_gh.gh_gl) 8592e60d768SBenjamin Marzinski gfs2_glock_dq_uninit(&freeze_gh); 8609e6e0a12SSteven Whitehouse 8619e6e0a12SSteven Whitehouse gfs2_quota_cleanup(sdp); 8629e6e0a12SSteven Whitehouse 8639e6e0a12SSteven Whitehouse return error; 8649e6e0a12SSteven Whitehouse } 8659e6e0a12SSteven Whitehouse 8669e6e0a12SSteven Whitehouse /** 8679e6e0a12SSteven Whitehouse * gfs2_put_super - Unmount the filesystem 8689e6e0a12SSteven Whitehouse * @sb: The VFS superblock 8699e6e0a12SSteven Whitehouse * 8709e6e0a12SSteven Whitehouse */ 8719e6e0a12SSteven Whitehouse 8729e6e0a12SSteven Whitehouse static void gfs2_put_super(struct super_block *sb) 8739e6e0a12SSteven Whitehouse { 8749e6e0a12SSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 8759e6e0a12SSteven Whitehouse int error; 8769e6e0a12SSteven Whitehouse struct gfs2_jdesc *jd; 8779e6e0a12SSteven Whitehouse 8789e6e0a12SSteven Whitehouse /* No more recovery requests */ 8799e6e0a12SSteven Whitehouse set_bit(SDF_NORECOVERY, &sdp->sd_flags); 8809e6e0a12SSteven Whitehouse smp_mb(); 8819e6e0a12SSteven Whitehouse 8829e6e0a12SSteven Whitehouse /* Wait on outstanding recovery */ 8839e6e0a12SSteven Whitehouse restart: 8849e6e0a12SSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 8859e6e0a12SSteven Whitehouse list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { 8869e6e0a12SSteven Whitehouse if (!test_bit(JDF_RECOVERY, &jd->jd_flags)) 8879e6e0a12SSteven Whitehouse continue; 8889e6e0a12SSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 8899e6e0a12SSteven Whitehouse wait_on_bit(&jd->jd_flags, JDF_RECOVERY, 89074316201SNeilBrown TASK_UNINTERRUPTIBLE); 8919e6e0a12SSteven Whitehouse goto restart; 8929e6e0a12SSteven Whitehouse } 8939e6e0a12SSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 8949e6e0a12SSteven Whitehouse 8959e6e0a12SSteven Whitehouse if (!(sb->s_flags & MS_RDONLY)) { 8969e6e0a12SSteven Whitehouse error = gfs2_make_fs_ro(sdp); 8979e6e0a12SSteven Whitehouse if (error) 8989e6e0a12SSteven Whitehouse gfs2_io_error(sdp); 8999e6e0a12SSteven Whitehouse } 9009e6e0a12SSteven Whitehouse /* At this point, we're through modifying the disk */ 9019e6e0a12SSteven Whitehouse 9029e6e0a12SSteven Whitehouse /* Release stuff */ 9039e6e0a12SSteven Whitehouse 9049e6e0a12SSteven Whitehouse iput(sdp->sd_jindex); 9059e6e0a12SSteven Whitehouse iput(sdp->sd_statfs_inode); 9069e6e0a12SSteven Whitehouse iput(sdp->sd_rindex); 9079e6e0a12SSteven Whitehouse iput(sdp->sd_quota_inode); 9089e6e0a12SSteven Whitehouse 9099e6e0a12SSteven Whitehouse gfs2_glock_put(sdp->sd_rename_gl); 91024972557SBenjamin Marzinski gfs2_glock_put(sdp->sd_freeze_gl); 9119e6e0a12SSteven Whitehouse 9129e6e0a12SSteven Whitehouse if (!sdp->sd_args.ar_spectator) { 9139e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&sdp->sd_journal_gh); 9149e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); 9159e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&sdp->sd_sc_gh); 9169e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&sdp->sd_qc_gh); 9179e6e0a12SSteven Whitehouse iput(sdp->sd_sc_inode); 9189e6e0a12SSteven Whitehouse iput(sdp->sd_qc_inode); 9199e6e0a12SSteven Whitehouse } 9209e6e0a12SSteven Whitehouse 9219e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&sdp->sd_live_gh); 9229e6e0a12SSteven Whitehouse gfs2_clear_rgrpd(sdp); 9239e6e0a12SSteven Whitehouse gfs2_jindex_free(sdp); 9249e6e0a12SSteven Whitehouse /* Take apart glock structures and buffer lists */ 9259e6e0a12SSteven Whitehouse gfs2_gl_hash_clear(sdp); 9269e6e0a12SSteven Whitehouse /* Unmount the locking protocol */ 9279e6e0a12SSteven Whitehouse gfs2_lm_unmount(sdp); 9289e6e0a12SSteven Whitehouse 9299e6e0a12SSteven Whitehouse /* At this point, we're through participating in the lockspace */ 9309e6e0a12SSteven Whitehouse gfs2_sys_fs_del(sdp); 9319e6e0a12SSteven Whitehouse } 9329e6e0a12SSteven Whitehouse 9339e6e0a12SSteven Whitehouse /** 9349e6e0a12SSteven Whitehouse * gfs2_sync_fs - sync the filesystem 9359e6e0a12SSteven Whitehouse * @sb: the superblock 9369e6e0a12SSteven Whitehouse * 9379e6e0a12SSteven Whitehouse * Flushes the log to disk. 9389e6e0a12SSteven Whitehouse */ 9399e6e0a12SSteven Whitehouse 9409e6e0a12SSteven Whitehouse static int gfs2_sync_fs(struct super_block *sb, int wait) 9419e6e0a12SSteven Whitehouse { 9421027efaaSSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 943a1177825SJan Kara 944a1177825SJan Kara gfs2_quota_sync(sb, -1); 9452e60d768SBenjamin Marzinski if (wait && sdp) 94624972557SBenjamin Marzinski gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); 9479e6e0a12SSteven Whitehouse return 0; 9489e6e0a12SSteven Whitehouse } 9499e6e0a12SSteven Whitehouse 9502e60d768SBenjamin Marzinski void gfs2_freeze_func(struct work_struct *work) 9512e60d768SBenjamin Marzinski { 9522e60d768SBenjamin Marzinski int error; 9532e60d768SBenjamin Marzinski struct gfs2_holder freeze_gh; 9542e60d768SBenjamin Marzinski struct gfs2_sbd *sdp = container_of(work, struct gfs2_sbd, sd_freeze_work); 9552e60d768SBenjamin Marzinski struct super_block *sb = sdp->sd_vfs; 9562e60d768SBenjamin Marzinski 9572e60d768SBenjamin Marzinski atomic_inc(&sb->s_active); 9582e60d768SBenjamin Marzinski error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_SHARED, 0, 9592e60d768SBenjamin Marzinski &freeze_gh); 9602e60d768SBenjamin Marzinski if (error) { 9612e60d768SBenjamin Marzinski printk(KERN_INFO "GFS2: couln't get freeze lock : %d\n", error); 9622e60d768SBenjamin Marzinski gfs2_assert_withdraw(sdp, 0); 9632e60d768SBenjamin Marzinski } 9642e60d768SBenjamin Marzinski else { 9652e60d768SBenjamin Marzinski atomic_set(&sdp->sd_freeze_state, SFS_UNFROZEN); 9662e60d768SBenjamin Marzinski error = thaw_super(sb); 9672e60d768SBenjamin Marzinski if (error) { 9682e60d768SBenjamin Marzinski printk(KERN_INFO "GFS2: couldn't thaw filesystem: %d\n", 9692e60d768SBenjamin Marzinski error); 9702e60d768SBenjamin Marzinski gfs2_assert_withdraw(sdp, 0); 9712e60d768SBenjamin Marzinski } 9722e60d768SBenjamin Marzinski if (!test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) 9732e60d768SBenjamin Marzinski freeze_gh.gh_flags |= GL_NOCACHE; 9742e60d768SBenjamin Marzinski gfs2_glock_dq_uninit(&freeze_gh); 9752e60d768SBenjamin Marzinski } 9762e60d768SBenjamin Marzinski deactivate_super(sb); 9772e60d768SBenjamin Marzinski return; 9782e60d768SBenjamin Marzinski } 9792e60d768SBenjamin Marzinski 9809e6e0a12SSteven Whitehouse /** 9819e6e0a12SSteven Whitehouse * gfs2_freeze - prevent further writes to the filesystem 9829e6e0a12SSteven Whitehouse * @sb: the VFS structure for the filesystem 9839e6e0a12SSteven Whitehouse * 9849e6e0a12SSteven Whitehouse */ 9859e6e0a12SSteven Whitehouse 9869e6e0a12SSteven Whitehouse static int gfs2_freeze(struct super_block *sb) 9879e6e0a12SSteven Whitehouse { 9889e6e0a12SSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 9892e60d768SBenjamin Marzinski int error = 0; 9909e6e0a12SSteven Whitehouse 9912e60d768SBenjamin Marzinski mutex_lock(&sdp->sd_freeze_mutex); 9922e60d768SBenjamin Marzinski if (atomic_read(&sdp->sd_freeze_state) != SFS_UNFROZEN) 9932e60d768SBenjamin Marzinski goto out; 9942e60d768SBenjamin Marzinski 9952e60d768SBenjamin Marzinski if (test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) { 9962e60d768SBenjamin Marzinski error = -EINVAL; 9972e60d768SBenjamin Marzinski goto out; 9982e60d768SBenjamin Marzinski } 9999e6e0a12SSteven Whitehouse 10009e6e0a12SSteven Whitehouse for (;;) { 1001d564053fSSteven Whitehouse error = gfs2_lock_fs_check_clean(sdp, &sdp->sd_freeze_gh); 10029e6e0a12SSteven Whitehouse if (!error) 10039e6e0a12SSteven Whitehouse break; 10049e6e0a12SSteven Whitehouse 10059e6e0a12SSteven Whitehouse switch (error) { 10069e6e0a12SSteven Whitehouse case -EBUSY: 10079e6e0a12SSteven Whitehouse fs_err(sdp, "waiting for recovery before freeze\n"); 10089e6e0a12SSteven Whitehouse break; 10099e6e0a12SSteven Whitehouse 10109e6e0a12SSteven Whitehouse default: 10119e6e0a12SSteven Whitehouse fs_err(sdp, "error freezing FS: %d\n", error); 10129e6e0a12SSteven Whitehouse break; 10139e6e0a12SSteven Whitehouse } 10149e6e0a12SSteven Whitehouse 10159e6e0a12SSteven Whitehouse fs_err(sdp, "retrying...\n"); 10169e6e0a12SSteven Whitehouse msleep(1000); 10179e6e0a12SSteven Whitehouse } 10182e60d768SBenjamin Marzinski error = 0; 10192e60d768SBenjamin Marzinski out: 10202e60d768SBenjamin Marzinski mutex_unlock(&sdp->sd_freeze_mutex); 10212e60d768SBenjamin Marzinski return error; 10229e6e0a12SSteven Whitehouse } 10239e6e0a12SSteven Whitehouse 10249e6e0a12SSteven Whitehouse /** 10259e6e0a12SSteven Whitehouse * gfs2_unfreeze - reallow writes to the filesystem 10269e6e0a12SSteven Whitehouse * @sb: the VFS structure for the filesystem 10279e6e0a12SSteven Whitehouse * 10289e6e0a12SSteven Whitehouse */ 10299e6e0a12SSteven Whitehouse 10309e6e0a12SSteven Whitehouse static int gfs2_unfreeze(struct super_block *sb) 10319e6e0a12SSteven Whitehouse { 1032d564053fSSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 1033d564053fSSteven Whitehouse 10342e60d768SBenjamin Marzinski mutex_lock(&sdp->sd_freeze_mutex); 10352e60d768SBenjamin Marzinski if (atomic_read(&sdp->sd_freeze_state) != SFS_FROZEN || 10362e60d768SBenjamin Marzinski sdp->sd_freeze_gh.gh_gl == NULL) { 10372e60d768SBenjamin Marzinski mutex_unlock(&sdp->sd_freeze_mutex); 10382e60d768SBenjamin Marzinski return 0; 10392e60d768SBenjamin Marzinski } 10402e60d768SBenjamin Marzinski 1041d564053fSSteven Whitehouse gfs2_glock_dq_uninit(&sdp->sd_freeze_gh); 10422e60d768SBenjamin Marzinski mutex_unlock(&sdp->sd_freeze_mutex); 10439e6e0a12SSteven Whitehouse return 0; 10449e6e0a12SSteven Whitehouse } 10459e6e0a12SSteven Whitehouse 10469e6e0a12SSteven Whitehouse /** 10479e6e0a12SSteven Whitehouse * statfs_fill - fill in the sg for a given RG 10489e6e0a12SSteven Whitehouse * @rgd: the RG 10499e6e0a12SSteven Whitehouse * @sc: the sc structure 10509e6e0a12SSteven Whitehouse * 10519e6e0a12SSteven Whitehouse * Returns: 0 on success, -ESTALE if the LVB is invalid 10529e6e0a12SSteven Whitehouse */ 10539e6e0a12SSteven Whitehouse 10549e6e0a12SSteven Whitehouse static int statfs_slow_fill(struct gfs2_rgrpd *rgd, 10559e6e0a12SSteven Whitehouse struct gfs2_statfs_change_host *sc) 10569e6e0a12SSteven Whitehouse { 10579e6e0a12SSteven Whitehouse gfs2_rgrp_verify(rgd); 10589e6e0a12SSteven Whitehouse sc->sc_total += rgd->rd_data; 10599e6e0a12SSteven Whitehouse sc->sc_free += rgd->rd_free; 10609e6e0a12SSteven Whitehouse sc->sc_dinodes += rgd->rd_dinodes; 10619e6e0a12SSteven Whitehouse return 0; 10629e6e0a12SSteven Whitehouse } 10639e6e0a12SSteven Whitehouse 10649e6e0a12SSteven Whitehouse /** 10659e6e0a12SSteven Whitehouse * gfs2_statfs_slow - Stat a filesystem using asynchronous locking 10669e6e0a12SSteven Whitehouse * @sdp: the filesystem 10679e6e0a12SSteven Whitehouse * @sc: the sc info that will be returned 10689e6e0a12SSteven Whitehouse * 10699e6e0a12SSteven Whitehouse * Any error (other than a signal) will cause this routine to fall back 10709e6e0a12SSteven Whitehouse * to the synchronous version. 10719e6e0a12SSteven Whitehouse * 10729e6e0a12SSteven Whitehouse * FIXME: This really shouldn't busy wait like this. 10739e6e0a12SSteven Whitehouse * 10749e6e0a12SSteven Whitehouse * Returns: errno 10759e6e0a12SSteven Whitehouse */ 10769e6e0a12SSteven Whitehouse 10779e6e0a12SSteven Whitehouse static int gfs2_statfs_slow(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc) 10789e6e0a12SSteven Whitehouse { 10799e6e0a12SSteven Whitehouse struct gfs2_rgrpd *rgd_next; 10809e6e0a12SSteven Whitehouse struct gfs2_holder *gha, *gh; 10819e6e0a12SSteven Whitehouse unsigned int slots = 64; 10829e6e0a12SSteven Whitehouse unsigned int x; 10839e6e0a12SSteven Whitehouse int done; 10849e6e0a12SSteven Whitehouse int error = 0, err; 10859e6e0a12SSteven Whitehouse 10869e6e0a12SSteven Whitehouse memset(sc, 0, sizeof(struct gfs2_statfs_change_host)); 10879e6e0a12SSteven Whitehouse gha = kcalloc(slots, sizeof(struct gfs2_holder), GFP_KERNEL); 10889e6e0a12SSteven Whitehouse if (!gha) 10899e6e0a12SSteven Whitehouse return -ENOMEM; 10909e6e0a12SSteven Whitehouse 10919e6e0a12SSteven Whitehouse rgd_next = gfs2_rgrpd_get_first(sdp); 10929e6e0a12SSteven Whitehouse 10939e6e0a12SSteven Whitehouse for (;;) { 10949e6e0a12SSteven Whitehouse done = 1; 10959e6e0a12SSteven Whitehouse 10969e6e0a12SSteven Whitehouse for (x = 0; x < slots; x++) { 10979e6e0a12SSteven Whitehouse gh = gha + x; 10989e6e0a12SSteven Whitehouse 10999e6e0a12SSteven Whitehouse if (gh->gh_gl && gfs2_glock_poll(gh)) { 11009e6e0a12SSteven Whitehouse err = gfs2_glock_wait(gh); 11019e6e0a12SSteven Whitehouse if (err) { 11029e6e0a12SSteven Whitehouse gfs2_holder_uninit(gh); 11039e6e0a12SSteven Whitehouse error = err; 11049e6e0a12SSteven Whitehouse } else { 11059e6e0a12SSteven Whitehouse if (!error) 11069e6e0a12SSteven Whitehouse error = statfs_slow_fill( 11079e6e0a12SSteven Whitehouse gh->gh_gl->gl_object, sc); 11089e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(gh); 11099e6e0a12SSteven Whitehouse } 11109e6e0a12SSteven Whitehouse } 11119e6e0a12SSteven Whitehouse 11129e6e0a12SSteven Whitehouse if (gh->gh_gl) 11139e6e0a12SSteven Whitehouse done = 0; 11149e6e0a12SSteven Whitehouse else if (rgd_next && !error) { 11159e6e0a12SSteven Whitehouse error = gfs2_glock_nq_init(rgd_next->rd_gl, 11169e6e0a12SSteven Whitehouse LM_ST_SHARED, 11179e6e0a12SSteven Whitehouse GL_ASYNC, 11189e6e0a12SSteven Whitehouse gh); 11199e6e0a12SSteven Whitehouse rgd_next = gfs2_rgrpd_get_next(rgd_next); 11209e6e0a12SSteven Whitehouse done = 0; 11219e6e0a12SSteven Whitehouse } 11229e6e0a12SSteven Whitehouse 11239e6e0a12SSteven Whitehouse if (signal_pending(current)) 11249e6e0a12SSteven Whitehouse error = -ERESTARTSYS; 11259e6e0a12SSteven Whitehouse } 11269e6e0a12SSteven Whitehouse 11279e6e0a12SSteven Whitehouse if (done) 11289e6e0a12SSteven Whitehouse break; 11299e6e0a12SSteven Whitehouse 11309e6e0a12SSteven Whitehouse yield(); 11319e6e0a12SSteven Whitehouse } 11329e6e0a12SSteven Whitehouse 11339e6e0a12SSteven Whitehouse kfree(gha); 11349e6e0a12SSteven Whitehouse return error; 11359e6e0a12SSteven Whitehouse } 11369e6e0a12SSteven Whitehouse 11379e6e0a12SSteven Whitehouse /** 11389e6e0a12SSteven Whitehouse * gfs2_statfs_i - Do a statfs 11399e6e0a12SSteven Whitehouse * @sdp: the filesystem 11409e6e0a12SSteven Whitehouse * @sg: the sg structure 11419e6e0a12SSteven Whitehouse * 11429e6e0a12SSteven Whitehouse * Returns: errno 11439e6e0a12SSteven Whitehouse */ 11449e6e0a12SSteven Whitehouse 11459e6e0a12SSteven Whitehouse static int gfs2_statfs_i(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc) 11469e6e0a12SSteven Whitehouse { 11479e6e0a12SSteven Whitehouse struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; 11489e6e0a12SSteven Whitehouse struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; 11499e6e0a12SSteven Whitehouse 11509e6e0a12SSteven Whitehouse spin_lock(&sdp->sd_statfs_spin); 11519e6e0a12SSteven Whitehouse 11529e6e0a12SSteven Whitehouse *sc = *m_sc; 11539e6e0a12SSteven Whitehouse sc->sc_total += l_sc->sc_total; 11549e6e0a12SSteven Whitehouse sc->sc_free += l_sc->sc_free; 11559e6e0a12SSteven Whitehouse sc->sc_dinodes += l_sc->sc_dinodes; 11569e6e0a12SSteven Whitehouse 11579e6e0a12SSteven Whitehouse spin_unlock(&sdp->sd_statfs_spin); 11589e6e0a12SSteven Whitehouse 11599e6e0a12SSteven Whitehouse if (sc->sc_free < 0) 11609e6e0a12SSteven Whitehouse sc->sc_free = 0; 11619e6e0a12SSteven Whitehouse if (sc->sc_free > sc->sc_total) 11629e6e0a12SSteven Whitehouse sc->sc_free = sc->sc_total; 11639e6e0a12SSteven Whitehouse if (sc->sc_dinodes < 0) 11649e6e0a12SSteven Whitehouse sc->sc_dinodes = 0; 11659e6e0a12SSteven Whitehouse 11669e6e0a12SSteven Whitehouse return 0; 11679e6e0a12SSteven Whitehouse } 11689e6e0a12SSteven Whitehouse 11699e6e0a12SSteven Whitehouse /** 11709e6e0a12SSteven Whitehouse * gfs2_statfs - Gather and return stats about the filesystem 11719e6e0a12SSteven Whitehouse * @sb: The superblock 11729e6e0a12SSteven Whitehouse * @statfsbuf: The buffer 11739e6e0a12SSteven Whitehouse * 11749e6e0a12SSteven Whitehouse * Returns: 0 on success or error code 11759e6e0a12SSteven Whitehouse */ 11769e6e0a12SSteven Whitehouse 11779e6e0a12SSteven Whitehouse static int gfs2_statfs(struct dentry *dentry, struct kstatfs *buf) 11789e6e0a12SSteven Whitehouse { 1179fc64005cSAl Viro struct super_block *sb = dentry->d_sb; 11809e6e0a12SSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 11819e6e0a12SSteven Whitehouse struct gfs2_statfs_change_host sc; 11829e6e0a12SSteven Whitehouse int error; 11839e6e0a12SSteven Whitehouse 11848339ee54SSteven Whitehouse error = gfs2_rindex_update(sdp); 11858339ee54SSteven Whitehouse if (error) 11868339ee54SSteven Whitehouse return error; 11878339ee54SSteven Whitehouse 11889e6e0a12SSteven Whitehouse if (gfs2_tune_get(sdp, gt_statfs_slow)) 11899e6e0a12SSteven Whitehouse error = gfs2_statfs_slow(sdp, &sc); 11909e6e0a12SSteven Whitehouse else 11919e6e0a12SSteven Whitehouse error = gfs2_statfs_i(sdp, &sc); 11929e6e0a12SSteven Whitehouse 11939e6e0a12SSteven Whitehouse if (error) 11949e6e0a12SSteven Whitehouse return error; 11959e6e0a12SSteven Whitehouse 11969e6e0a12SSteven Whitehouse buf->f_type = GFS2_MAGIC; 11979e6e0a12SSteven Whitehouse buf->f_bsize = sdp->sd_sb.sb_bsize; 11989e6e0a12SSteven Whitehouse buf->f_blocks = sc.sc_total; 11999e6e0a12SSteven Whitehouse buf->f_bfree = sc.sc_free; 12009e6e0a12SSteven Whitehouse buf->f_bavail = sc.sc_free; 12019e6e0a12SSteven Whitehouse buf->f_files = sc.sc_dinodes + sc.sc_free; 12029e6e0a12SSteven Whitehouse buf->f_ffree = sc.sc_free; 12039e6e0a12SSteven Whitehouse buf->f_namelen = GFS2_FNAMESIZE; 12049e6e0a12SSteven Whitehouse 12059e6e0a12SSteven Whitehouse return 0; 12069e6e0a12SSteven Whitehouse } 12079e6e0a12SSteven Whitehouse 12089e6e0a12SSteven Whitehouse /** 12099e6e0a12SSteven Whitehouse * gfs2_remount_fs - called when the FS is remounted 12109e6e0a12SSteven Whitehouse * @sb: the filesystem 12119e6e0a12SSteven Whitehouse * @flags: the remount flags 12129e6e0a12SSteven Whitehouse * @data: extra data passed in (not used right now) 12139e6e0a12SSteven Whitehouse * 12149e6e0a12SSteven Whitehouse * Returns: errno 12159e6e0a12SSteven Whitehouse */ 12169e6e0a12SSteven Whitehouse 12179e6e0a12SSteven Whitehouse static int gfs2_remount_fs(struct super_block *sb, int *flags, char *data) 12189e6e0a12SSteven Whitehouse { 12199e6e0a12SSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 12209e6e0a12SSteven Whitehouse struct gfs2_args args = sdp->sd_args; /* Default to current settings */ 12219e6e0a12SSteven Whitehouse struct gfs2_tune *gt = &sdp->sd_tune; 12229e6e0a12SSteven Whitehouse int error; 12239e6e0a12SSteven Whitehouse 122402b9984dSTheodore Ts'o sync_filesystem(sb); 122502b9984dSTheodore Ts'o 12269e6e0a12SSteven Whitehouse spin_lock(>->gt_spin); 12275e687eacSBenjamin Marzinski args.ar_commit = gt->gt_logd_secs; 12283d3c10f2SBenjamin Marzinski args.ar_quota_quantum = gt->gt_quota_quantum; 12293d3c10f2SBenjamin Marzinski if (gt->gt_statfs_slow) 12303d3c10f2SBenjamin Marzinski args.ar_statfs_quantum = 0; 12313d3c10f2SBenjamin Marzinski else 12323d3c10f2SBenjamin Marzinski args.ar_statfs_quantum = gt->gt_statfs_quantum; 12339e6e0a12SSteven Whitehouse spin_unlock(>->gt_spin); 1234f55073ffSSteven Whitehouse error = gfs2_mount_args(&args, data); 12359e6e0a12SSteven Whitehouse if (error) 12369e6e0a12SSteven Whitehouse return error; 12379e6e0a12SSteven Whitehouse 12389e6e0a12SSteven Whitehouse /* Not allowed to change locking details */ 12399e6e0a12SSteven Whitehouse if (strcmp(args.ar_lockproto, sdp->sd_args.ar_lockproto) || 12409e6e0a12SSteven Whitehouse strcmp(args.ar_locktable, sdp->sd_args.ar_locktable) || 12419e6e0a12SSteven Whitehouse strcmp(args.ar_hostdata, sdp->sd_args.ar_hostdata)) 12429e6e0a12SSteven Whitehouse return -EINVAL; 12439e6e0a12SSteven Whitehouse 12449e6e0a12SSteven Whitehouse /* Some flags must not be changed */ 12459e6e0a12SSteven Whitehouse if (args_neq(&args, &sdp->sd_args, spectator) || 12469e6e0a12SSteven Whitehouse args_neq(&args, &sdp->sd_args, localflocks) || 12479e6e0a12SSteven Whitehouse args_neq(&args, &sdp->sd_args, meta)) 12489e6e0a12SSteven Whitehouse return -EINVAL; 12499e6e0a12SSteven Whitehouse 12509e6e0a12SSteven Whitehouse if (sdp->sd_args.ar_spectator) 12519e6e0a12SSteven Whitehouse *flags |= MS_RDONLY; 12529e6e0a12SSteven Whitehouse 12539e6e0a12SSteven Whitehouse if ((sb->s_flags ^ *flags) & MS_RDONLY) { 12549e6e0a12SSteven Whitehouse if (*flags & MS_RDONLY) 12559e6e0a12SSteven Whitehouse error = gfs2_make_fs_ro(sdp); 12569e6e0a12SSteven Whitehouse else 12579e6e0a12SSteven Whitehouse error = gfs2_make_fs_rw(sdp); 12589e6e0a12SSteven Whitehouse if (error) 12599e6e0a12SSteven Whitehouse return error; 12609e6e0a12SSteven Whitehouse } 12619e6e0a12SSteven Whitehouse 12629e6e0a12SSteven Whitehouse sdp->sd_args = args; 12639e6e0a12SSteven Whitehouse if (sdp->sd_args.ar_posix_acl) 12649e6e0a12SSteven Whitehouse sb->s_flags |= MS_POSIXACL; 12659e6e0a12SSteven Whitehouse else 12669e6e0a12SSteven Whitehouse sb->s_flags &= ~MS_POSIXACL; 1267f25934c5SChristoph Hellwig if (sdp->sd_args.ar_nobarrier) 1268f25934c5SChristoph Hellwig set_bit(SDF_NOBARRIERS, &sdp->sd_flags); 1269f25934c5SChristoph Hellwig else 1270f25934c5SChristoph Hellwig clear_bit(SDF_NOBARRIERS, &sdp->sd_flags); 12719e6e0a12SSteven Whitehouse spin_lock(>->gt_spin); 12725e687eacSBenjamin Marzinski gt->gt_logd_secs = args.ar_commit; 12733d3c10f2SBenjamin Marzinski gt->gt_quota_quantum = args.ar_quota_quantum; 12743d3c10f2SBenjamin Marzinski if (args.ar_statfs_quantum) { 12753d3c10f2SBenjamin Marzinski gt->gt_statfs_slow = 0; 12763d3c10f2SBenjamin Marzinski gt->gt_statfs_quantum = args.ar_statfs_quantum; 12773d3c10f2SBenjamin Marzinski } 12783d3c10f2SBenjamin Marzinski else { 12793d3c10f2SBenjamin Marzinski gt->gt_statfs_slow = 1; 12803d3c10f2SBenjamin Marzinski gt->gt_statfs_quantum = 30; 12813d3c10f2SBenjamin Marzinski } 12829e6e0a12SSteven Whitehouse spin_unlock(>->gt_spin); 12839e6e0a12SSteven Whitehouse 12848633ecfaSSteven Whitehouse gfs2_online_uevent(sdp); 12859e6e0a12SSteven Whitehouse return 0; 12869e6e0a12SSteven Whitehouse } 12879e6e0a12SSteven Whitehouse 12889e6e0a12SSteven Whitehouse /** 12899e6e0a12SSteven Whitehouse * gfs2_drop_inode - Drop an inode (test for remote unlink) 12909e6e0a12SSteven Whitehouse * @inode: The inode to drop 12919e6e0a12SSteven Whitehouse * 12929e6e0a12SSteven Whitehouse * If we've received a callback on an iopen lock then its because a 12939e6e0a12SSteven Whitehouse * remote node tried to deallocate the inode but failed due to this node 12949e6e0a12SSteven Whitehouse * still having the inode open. Here we mark the link count zero 12959e6e0a12SSteven Whitehouse * since we know that it must have reached zero if the GLF_DEMOTE flag 12969e6e0a12SSteven Whitehouse * is set on the iopen glock. If we didn't do a disk read since the 12979e6e0a12SSteven Whitehouse * remote node removed the final link then we might otherwise miss 12989e6e0a12SSteven Whitehouse * this event. This check ensures that this node will deallocate the 12999e6e0a12SSteven Whitehouse * inode's blocks, or alternatively pass the baton on to another 13009e6e0a12SSteven Whitehouse * node for later deallocation. 13019e6e0a12SSteven Whitehouse */ 13029e6e0a12SSteven Whitehouse 130345321ac5SAl Viro static int gfs2_drop_inode(struct inode *inode) 13049e6e0a12SSteven Whitehouse { 13059e6e0a12SSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 13069e6e0a12SSteven Whitehouse 130705978803SAbhi Das if (!test_bit(GIF_FREE_VFS_INODE, &ip->i_flags) && inode->i_nlink) { 13089e6e0a12SSteven Whitehouse struct gfs2_glock *gl = ip->i_iopen_gh.gh_gl; 13099e6e0a12SSteven Whitehouse if (gl && test_bit(GLF_DEMOTE, &gl->gl_flags)) 13109e6e0a12SSteven Whitehouse clear_nlink(inode); 13119e6e0a12SSteven Whitehouse } 131245321ac5SAl Viro return generic_drop_inode(inode); 13139e6e0a12SSteven Whitehouse } 13149e6e0a12SSteven Whitehouse 13159e6e0a12SSteven Whitehouse static int is_ancestor(const struct dentry *d1, const struct dentry *d2) 13169e6e0a12SSteven Whitehouse { 13179e6e0a12SSteven Whitehouse do { 13189e6e0a12SSteven Whitehouse if (d1 == d2) 13199e6e0a12SSteven Whitehouse return 1; 13209e6e0a12SSteven Whitehouse d1 = d1->d_parent; 13219e6e0a12SSteven Whitehouse } while (!IS_ROOT(d1)); 13229e6e0a12SSteven Whitehouse return 0; 13239e6e0a12SSteven Whitehouse } 13249e6e0a12SSteven Whitehouse 13259e6e0a12SSteven Whitehouse /** 13269e6e0a12SSteven Whitehouse * gfs2_show_options - Show mount options for /proc/mounts 13279e6e0a12SSteven Whitehouse * @s: seq_file structure 132834c80b1dSAl Viro * @root: root of this (sub)tree 13299e6e0a12SSteven Whitehouse * 13309e6e0a12SSteven Whitehouse * Returns: 0 on success or error code 13319e6e0a12SSteven Whitehouse */ 13329e6e0a12SSteven Whitehouse 133334c80b1dSAl Viro static int gfs2_show_options(struct seq_file *s, struct dentry *root) 13349e6e0a12SSteven Whitehouse { 133534c80b1dSAl Viro struct gfs2_sbd *sdp = root->d_sb->s_fs_info; 13369e6e0a12SSteven Whitehouse struct gfs2_args *args = &sdp->sd_args; 13373d3c10f2SBenjamin Marzinski int val; 13389e6e0a12SSteven Whitehouse 133934c80b1dSAl Viro if (is_ancestor(root, sdp->sd_master_dir)) 1340eaebdedcSFabian Frederick seq_puts(s, ",meta"); 13419e6e0a12SSteven Whitehouse if (args->ar_lockproto[0]) 1342a068acf2SKees Cook seq_show_option(s, "lockproto", args->ar_lockproto); 13439e6e0a12SSteven Whitehouse if (args->ar_locktable[0]) 1344a068acf2SKees Cook seq_show_option(s, "locktable", args->ar_locktable); 13459e6e0a12SSteven Whitehouse if (args->ar_hostdata[0]) 1346a068acf2SKees Cook seq_show_option(s, "hostdata", args->ar_hostdata); 13479e6e0a12SSteven Whitehouse if (args->ar_spectator) 1348eaebdedcSFabian Frederick seq_puts(s, ",spectator"); 13499e6e0a12SSteven Whitehouse if (args->ar_localflocks) 1350eaebdedcSFabian Frederick seq_puts(s, ",localflocks"); 13519e6e0a12SSteven Whitehouse if (args->ar_debug) 1352eaebdedcSFabian Frederick seq_puts(s, ",debug"); 13539e6e0a12SSteven Whitehouse if (args->ar_posix_acl) 1354eaebdedcSFabian Frederick seq_puts(s, ",acl"); 13559e6e0a12SSteven Whitehouse if (args->ar_quota != GFS2_QUOTA_DEFAULT) { 13569e6e0a12SSteven Whitehouse char *state; 13579e6e0a12SSteven Whitehouse switch (args->ar_quota) { 13589e6e0a12SSteven Whitehouse case GFS2_QUOTA_OFF: 13599e6e0a12SSteven Whitehouse state = "off"; 13609e6e0a12SSteven Whitehouse break; 13619e6e0a12SSteven Whitehouse case GFS2_QUOTA_ACCOUNT: 13629e6e0a12SSteven Whitehouse state = "account"; 13639e6e0a12SSteven Whitehouse break; 13649e6e0a12SSteven Whitehouse case GFS2_QUOTA_ON: 13659e6e0a12SSteven Whitehouse state = "on"; 13669e6e0a12SSteven Whitehouse break; 13679e6e0a12SSteven Whitehouse default: 13689e6e0a12SSteven Whitehouse state = "unknown"; 13699e6e0a12SSteven Whitehouse break; 13709e6e0a12SSteven Whitehouse } 13719e6e0a12SSteven Whitehouse seq_printf(s, ",quota=%s", state); 13729e6e0a12SSteven Whitehouse } 13739e6e0a12SSteven Whitehouse if (args->ar_suiddir) 1374eaebdedcSFabian Frederick seq_puts(s, ",suiddir"); 13759e6e0a12SSteven Whitehouse if (args->ar_data != GFS2_DATA_DEFAULT) { 13769e6e0a12SSteven Whitehouse char *state; 13779e6e0a12SSteven Whitehouse switch (args->ar_data) { 13789e6e0a12SSteven Whitehouse case GFS2_DATA_WRITEBACK: 13799e6e0a12SSteven Whitehouse state = "writeback"; 13809e6e0a12SSteven Whitehouse break; 13819e6e0a12SSteven Whitehouse case GFS2_DATA_ORDERED: 13829e6e0a12SSteven Whitehouse state = "ordered"; 13839e6e0a12SSteven Whitehouse break; 13849e6e0a12SSteven Whitehouse default: 13859e6e0a12SSteven Whitehouse state = "unknown"; 13869e6e0a12SSteven Whitehouse break; 13879e6e0a12SSteven Whitehouse } 13889e6e0a12SSteven Whitehouse seq_printf(s, ",data=%s", state); 13899e6e0a12SSteven Whitehouse } 13909e6e0a12SSteven Whitehouse if (args->ar_discard) 1391eaebdedcSFabian Frederick seq_puts(s, ",discard"); 13925e687eacSBenjamin Marzinski val = sdp->sd_tune.gt_logd_secs; 13935e687eacSBenjamin Marzinski if (val != 30) 13943d3c10f2SBenjamin Marzinski seq_printf(s, ",commit=%d", val); 13953d3c10f2SBenjamin Marzinski val = sdp->sd_tune.gt_statfs_quantum; 13963d3c10f2SBenjamin Marzinski if (val != 30) 13973d3c10f2SBenjamin Marzinski seq_printf(s, ",statfs_quantum=%d", val); 13982b9731e8SSteven Whitehouse else if (sdp->sd_tune.gt_statfs_slow) 13992b9731e8SSteven Whitehouse seq_puts(s, ",statfs_quantum=0"); 14003d3c10f2SBenjamin Marzinski val = sdp->sd_tune.gt_quota_quantum; 14013d3c10f2SBenjamin Marzinski if (val != 60) 14023d3c10f2SBenjamin Marzinski seq_printf(s, ",quota_quantum=%d", val); 14033d3c10f2SBenjamin Marzinski if (args->ar_statfs_percent) 14043d3c10f2SBenjamin Marzinski seq_printf(s, ",statfs_percent=%d", args->ar_statfs_percent); 1405d34843d0SBob Peterson if (args->ar_errors != GFS2_ERRORS_DEFAULT) { 1406d34843d0SBob Peterson const char *state; 1407d34843d0SBob Peterson 1408d34843d0SBob Peterson switch (args->ar_errors) { 1409d34843d0SBob Peterson case GFS2_ERRORS_WITHDRAW: 1410d34843d0SBob Peterson state = "withdraw"; 1411d34843d0SBob Peterson break; 1412d34843d0SBob Peterson case GFS2_ERRORS_PANIC: 1413d34843d0SBob Peterson state = "panic"; 1414d34843d0SBob Peterson break; 1415d34843d0SBob Peterson default: 1416d34843d0SBob Peterson state = "unknown"; 1417d34843d0SBob Peterson break; 1418d34843d0SBob Peterson } 1419d34843d0SBob Peterson seq_printf(s, ",errors=%s", state); 1420d34843d0SBob Peterson } 1421cdcfde62SSteven Whitehouse if (test_bit(SDF_NOBARRIERS, &sdp->sd_flags)) 1422eaebdedcSFabian Frederick seq_puts(s, ",nobarrier"); 1423913a71d2SSteven Whitehouse if (test_bit(SDF_DEMOTE, &sdp->sd_flags)) 1424eaebdedcSFabian Frederick seq_puts(s, ",demote_interface_used"); 142590306c41SBenjamin Marzinski if (args->ar_rgrplvb) 1426eaebdedcSFabian Frederick seq_puts(s, ",rgrplvb"); 1427471f3db2SBenjamin Marzinski if (args->ar_loccookie) 1428471f3db2SBenjamin Marzinski seq_puts(s, ",loccookie"); 14299e6e0a12SSteven Whitehouse return 0; 14309e6e0a12SSteven Whitehouse } 14319e6e0a12SSteven Whitehouse 1432f42ab085SSteven Whitehouse static void gfs2_final_release_pages(struct gfs2_inode *ip) 1433f42ab085SSteven Whitehouse { 1434f42ab085SSteven Whitehouse struct inode *inode = &ip->i_inode; 1435f42ab085SSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 1436f42ab085SSteven Whitehouse 1437f42ab085SSteven Whitehouse truncate_inode_pages(gfs2_glock2aspace(ip->i_gl), 0); 1438f42ab085SSteven Whitehouse truncate_inode_pages(&inode->i_data, 0); 1439f42ab085SSteven Whitehouse 1440f42ab085SSteven Whitehouse if (atomic_read(&gl->gl_revokes) == 0) { 1441f42ab085SSteven Whitehouse clear_bit(GLF_LFLUSH, &gl->gl_flags); 1442f42ab085SSteven Whitehouse clear_bit(GLF_DIRTY, &gl->gl_flags); 1443f42ab085SSteven Whitehouse } 1444f42ab085SSteven Whitehouse } 1445f42ab085SSteven Whitehouse 1446f42ab085SSteven Whitehouse static int gfs2_dinode_dealloc(struct gfs2_inode *ip) 1447f42ab085SSteven Whitehouse { 1448f42ab085SSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); 1449f42ab085SSteven Whitehouse struct gfs2_rgrpd *rgd; 1450564e12b1SBob Peterson struct gfs2_holder gh; 1451f42ab085SSteven Whitehouse int error; 1452f42ab085SSteven Whitehouse 1453f42ab085SSteven Whitehouse if (gfs2_get_inode_blocks(&ip->i_inode) != 1) { 145494fb763bSSteven Whitehouse gfs2_consist_inode(ip); 1455f42ab085SSteven Whitehouse return -EIO; 1456f42ab085SSteven Whitehouse } 1457f42ab085SSteven Whitehouse 14588e2e0047SBob Peterson error = gfs2_rindex_update(sdp); 14598e2e0047SBob Peterson if (error) 14608e2e0047SBob Peterson return error; 1461f42ab085SSteven Whitehouse 1462f4108a60SEric W. Biederman error = gfs2_quota_hold(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE); 1463f42ab085SSteven Whitehouse if (error) 14645407e242SBob Peterson return error; 1465f42ab085SSteven Whitehouse 146666fc061bSSteven Whitehouse rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr, 1); 1467f42ab085SSteven Whitehouse if (!rgd) { 1468f42ab085SSteven Whitehouse gfs2_consist_inode(ip); 1469f42ab085SSteven Whitehouse error = -EIO; 14708339ee54SSteven Whitehouse goto out_qs; 1471f42ab085SSteven Whitehouse } 1472f42ab085SSteven Whitehouse 1473564e12b1SBob Peterson error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, &gh); 1474f42ab085SSteven Whitehouse if (error) 14758339ee54SSteven Whitehouse goto out_qs; 1476f42ab085SSteven Whitehouse 14774667a0ecSSteven Whitehouse error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_STATFS + RES_QUOTA, 14784667a0ecSSteven Whitehouse sdp->sd_jdesc->jd_blocks); 1479f42ab085SSteven Whitehouse if (error) 1480f42ab085SSteven Whitehouse goto out_rg_gunlock; 1481f42ab085SSteven Whitehouse 1482f42ab085SSteven Whitehouse gfs2_free_di(rgd, ip); 1483f42ab085SSteven Whitehouse 1484f42ab085SSteven Whitehouse gfs2_final_release_pages(ip); 1485f42ab085SSteven Whitehouse 1486f42ab085SSteven Whitehouse gfs2_trans_end(sdp); 1487f42ab085SSteven Whitehouse 1488f42ab085SSteven Whitehouse out_rg_gunlock: 1489564e12b1SBob Peterson gfs2_glock_dq_uninit(&gh); 1490f42ab085SSteven Whitehouse out_qs: 1491f42ab085SSteven Whitehouse gfs2_quota_unhold(ip); 1492f42ab085SSteven Whitehouse return error; 1493f42ab085SSteven Whitehouse } 1494f42ab085SSteven Whitehouse 1495380f7c65SSteven Whitehouse /** 1496380f7c65SSteven Whitehouse * gfs2_evict_inode - Remove an inode from cache 1497380f7c65SSteven Whitehouse * @inode: The inode to evict 1498380f7c65SSteven Whitehouse * 1499380f7c65SSteven Whitehouse * There are three cases to consider: 1500380f7c65SSteven Whitehouse * 1. i_nlink == 0, we are final opener (and must deallocate) 1501380f7c65SSteven Whitehouse * 2. i_nlink == 0, we are not the final opener (and cannot deallocate) 1502380f7c65SSteven Whitehouse * 3. i_nlink > 0 1503380f7c65SSteven Whitehouse * 1504380f7c65SSteven Whitehouse * If the fs is read only, then we have to treat all cases as per #3 1505380f7c65SSteven Whitehouse * since we are unable to do any deallocation. The inode will be 1506380f7c65SSteven Whitehouse * deallocated by the next read/write node to attempt an allocation 1507380f7c65SSteven Whitehouse * in the same resource group 1508380f7c65SSteven Whitehouse * 15099e6e0a12SSteven Whitehouse * We have to (at the moment) hold the inodes main lock to cover 15109e6e0a12SSteven Whitehouse * the gap between unlocking the shared lock on the iopen lock and 15119e6e0a12SSteven Whitehouse * taking the exclusive lock. I'd rather do a shared -> exclusive 15129e6e0a12SSteven Whitehouse * conversion on the iopen lock, but we can change that later. This 15139e6e0a12SSteven Whitehouse * is safe, just less efficient. 15149e6e0a12SSteven Whitehouse */ 15159e6e0a12SSteven Whitehouse 1516d5c1515cSAl Viro static void gfs2_evict_inode(struct inode *inode) 15179e6e0a12SSteven Whitehouse { 1518001e8e8dSSteven Whitehouse struct super_block *sb = inode->i_sb; 1519001e8e8dSSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 15209e6e0a12SSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 15219e6e0a12SSteven Whitehouse struct gfs2_holder gh; 1522ee530beaSBob Peterson struct address_space *metamapping; 15239e6e0a12SSteven Whitehouse int error; 15249e6e0a12SSteven Whitehouse 152505978803SAbhi Das if (test_bit(GIF_FREE_VFS_INODE, &ip->i_flags)) { 152605978803SAbhi Das clear_inode(inode); 152705978803SAbhi Das return; 152805978803SAbhi Das } 152905978803SAbhi Das 1530001e8e8dSSteven Whitehouse if (inode->i_nlink || (sb->s_flags & MS_RDONLY)) 1531d5c1515cSAl Viro goto out; 1532d5c1515cSAl Viro 153344ad37d6SBob Peterson /* Must not read inode block until block type has been verified */ 153444ad37d6SBob Peterson error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_SKIP, &gh); 15359e6e0a12SSteven Whitehouse if (unlikely(error)) { 1536a6a4d98bSBob Peterson ip->i_iopen_gh.gh_flags |= GL_NOCACHE; 153786d067a7SBob Peterson gfs2_glock_dq_wait(&ip->i_iopen_gh); 153886d067a7SBob Peterson gfs2_holder_uninit(&ip->i_iopen_gh); 15399e6e0a12SSteven Whitehouse goto out; 15409e6e0a12SSteven Whitehouse } 15419e6e0a12SSteven Whitehouse 154240ac218fSSteven Whitehouse if (!test_bit(GIF_ALLOC_FAILED, &ip->i_flags)) { 1543acf7e244SSteven Whitehouse error = gfs2_check_blk_type(sdp, ip->i_no_addr, GFS2_BLKST_UNLINKED); 1544acf7e244SSteven Whitehouse if (error) 1545acf7e244SSteven Whitehouse goto out_truncate; 154640ac218fSSteven Whitehouse } 1547acf7e244SSteven Whitehouse 154844ad37d6SBob Peterson if (test_bit(GIF_INVALID, &ip->i_flags)) { 154944ad37d6SBob Peterson error = gfs2_inode_refresh(ip); 155044ad37d6SBob Peterson if (error) 155144ad37d6SBob Peterson goto out_truncate; 155244ad37d6SBob Peterson } 155344ad37d6SBob Peterson 15547508abc4SBob Peterson if (ip->i_iopen_gh.gh_gl && 15557508abc4SBob Peterson test_bit(HIF_HOLDER, &ip->i_iopen_gh.gh_iflags)) { 155623c30108SBenjamin Marzinski ip->i_iopen_gh.gh_flags |= GL_NOCACHE; 15579e6e0a12SSteven Whitehouse gfs2_glock_dq_wait(&ip->i_iopen_gh); 15587508abc4SBob Peterson gfs2_holder_reinit(LM_ST_EXCLUSIVE, LM_FLAG_TRY_1CB | GL_NOCACHE, 15597508abc4SBob Peterson &ip->i_iopen_gh); 15609e6e0a12SSteven Whitehouse error = gfs2_glock_nq(&ip->i_iopen_gh); 15619e6e0a12SSteven Whitehouse if (error) 15629e6e0a12SSteven Whitehouse goto out_truncate; 15637508abc4SBob Peterson } 15649e6e0a12SSteven Whitehouse 1565380f7c65SSteven Whitehouse /* Case 1 starts here */ 1566380f7c65SSteven Whitehouse 15679e6e0a12SSteven Whitehouse if (S_ISDIR(inode->i_mode) && 15689e6e0a12SSteven Whitehouse (ip->i_diskflags & GFS2_DIF_EXHASH)) { 15699e6e0a12SSteven Whitehouse error = gfs2_dir_exhash_dealloc(ip); 15709e6e0a12SSteven Whitehouse if (error) 15719e6e0a12SSteven Whitehouse goto out_unlock; 15729e6e0a12SSteven Whitehouse } 15739e6e0a12SSteven Whitehouse 15749e6e0a12SSteven Whitehouse if (ip->i_eattr) { 15759e6e0a12SSteven Whitehouse error = gfs2_ea_dealloc(ip); 15769e6e0a12SSteven Whitehouse if (error) 15779e6e0a12SSteven Whitehouse goto out_unlock; 15789e6e0a12SSteven Whitehouse } 15799e6e0a12SSteven Whitehouse 15809e6e0a12SSteven Whitehouse if (!gfs2_is_stuffed(ip)) { 15819e6e0a12SSteven Whitehouse error = gfs2_file_dealloc(ip); 15829e6e0a12SSteven Whitehouse if (error) 15839e6e0a12SSteven Whitehouse goto out_unlock; 15849e6e0a12SSteven Whitehouse } 15859e6e0a12SSteven Whitehouse 15869e6e0a12SSteven Whitehouse error = gfs2_dinode_dealloc(ip); 15879e6e0a12SSteven Whitehouse goto out_unlock; 15889e6e0a12SSteven Whitehouse 15899e6e0a12SSteven Whitehouse out_truncate: 159024972557SBenjamin Marzinski gfs2_log_flush(sdp, ip->i_gl, NORMAL_FLUSH); 1591ee530beaSBob Peterson metamapping = gfs2_glock2aspace(ip->i_gl); 15922216db70SBenjamin Marzinski if (test_bit(GLF_DIRTY, &ip->i_gl->gl_flags)) { 15932216db70SBenjamin Marzinski filemap_fdatawrite(metamapping); 15942216db70SBenjamin Marzinski filemap_fdatawait(metamapping); 15952216db70SBenjamin Marzinski } 159640ac218fSSteven Whitehouse write_inode_now(inode, 1); 1597b5b24d7aSSteven Whitehouse gfs2_ail_flush(ip->i_gl, 0); 159840ac218fSSteven Whitehouse 1599380f7c65SSteven Whitehouse /* Case 2 starts here */ 16009e6e0a12SSteven Whitehouse error = gfs2_trans_begin(sdp, 0, sdp->sd_jdesc->jd_blocks); 16019e6e0a12SSteven Whitehouse if (error) 16029e6e0a12SSteven Whitehouse goto out_unlock; 1603380f7c65SSteven Whitehouse /* Needs to be done before glock release & also in a transaction */ 1604380f7c65SSteven Whitehouse truncate_inode_pages(&inode->i_data, 0); 1605ee530beaSBob Peterson truncate_inode_pages(metamapping, 0); 16069e6e0a12SSteven Whitehouse gfs2_trans_end(sdp); 16079e6e0a12SSteven Whitehouse 16089e6e0a12SSteven Whitehouse out_unlock: 1609380f7c65SSteven Whitehouse /* Error path for case 1 */ 1610a097dc7eSBob Peterson if (gfs2_rs_active(&ip->i_res)) 1611a097dc7eSBob Peterson gfs2_rs_deltree(&ip->i_res); 16128e2e0047SBob Peterson 16137508abc4SBob Peterson if (ip->i_iopen_gh.gh_gl) { 1614a6a4d98bSBob Peterson if (test_bit(HIF_HOLDER, &ip->i_iopen_gh.gh_iflags)) { 1615a6a4d98bSBob Peterson ip->i_iopen_gh.gh_flags |= GL_NOCACHE; 161686d067a7SBob Peterson gfs2_glock_dq_wait(&ip->i_iopen_gh); 1617a6a4d98bSBob Peterson } 16189e6e0a12SSteven Whitehouse gfs2_holder_uninit(&ip->i_iopen_gh); 16197508abc4SBob Peterson } 16209e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&gh); 16219e6e0a12SSteven Whitehouse if (error && error != GLR_TRYFAILED && error != -EROFS) 1622d5c1515cSAl Viro fs_warn(sdp, "gfs2_evict_inode: %d\n", error); 16239e6e0a12SSteven Whitehouse out: 1624380f7c65SSteven Whitehouse /* Case 3 starts here */ 162591b0abe3SJohannes Weiner truncate_inode_pages_final(&inode->i_data); 1626b54e9a0bSBob Peterson gfs2_rsqa_delete(ip, NULL); 162745138990SSteven Whitehouse gfs2_ordered_del_inode(ip); 1628dbd5768fSJan Kara clear_inode(inode); 162917d539f0SSteven Whitehouse gfs2_dir_hash_inval(ip); 1630d5c1515cSAl Viro ip->i_gl->gl_object = NULL; 163143829731STejun Heo flush_delayed_work(&ip->i_gl->gl_work); 163229687a2aSSteven Whitehouse gfs2_glock_add_to_lru(ip->i_gl); 1633d5c1515cSAl Viro gfs2_glock_put(ip->i_gl); 1634d5c1515cSAl Viro ip->i_gl = NULL; 1635d5c1515cSAl Viro if (ip->i_iopen_gh.gh_gl) { 1636d5c1515cSAl Viro ip->i_iopen_gh.gh_gl->gl_object = NULL; 1637a6a4d98bSBob Peterson ip->i_iopen_gh.gh_flags |= GL_NOCACHE; 163886d067a7SBob Peterson gfs2_glock_dq_wait(&ip->i_iopen_gh); 163986d067a7SBob Peterson gfs2_holder_uninit(&ip->i_iopen_gh); 1640d5c1515cSAl Viro } 16419e6e0a12SSteven Whitehouse } 16429e6e0a12SSteven Whitehouse 16439e6e0a12SSteven Whitehouse static struct inode *gfs2_alloc_inode(struct super_block *sb) 16449e6e0a12SSteven Whitehouse { 16459e6e0a12SSteven Whitehouse struct gfs2_inode *ip; 16469e6e0a12SSteven Whitehouse 16479e6e0a12SSteven Whitehouse ip = kmem_cache_alloc(gfs2_inode_cachep, GFP_KERNEL); 16489e6e0a12SSteven Whitehouse if (ip) { 16499e6e0a12SSteven Whitehouse ip->i_flags = 0; 16509e6e0a12SSteven Whitehouse ip->i_gl = NULL; 165154335b1fSSteven Whitehouse ip->i_rgd = NULL; 1652a097dc7eSBob Peterson memset(&ip->i_res, 0, sizeof(ip->i_res)); 1653a097dc7eSBob Peterson RB_CLEAR_NODE(&ip->i_res.rs_node); 1654c8d57703SAndreas Gruenbacher ip->i_rahead = 0; 16559e6e0a12SSteven Whitehouse } 16569e6e0a12SSteven Whitehouse return &ip->i_inode; 16579e6e0a12SSteven Whitehouse } 16589e6e0a12SSteven Whitehouse 1659fa0d7e3dSNick Piggin static void gfs2_i_callback(struct rcu_head *head) 1660fa0d7e3dSNick Piggin { 1661fa0d7e3dSNick Piggin struct inode *inode = container_of(head, struct inode, i_rcu); 1662fa0d7e3dSNick Piggin kmem_cache_free(gfs2_inode_cachep, inode); 1663fa0d7e3dSNick Piggin } 1664fa0d7e3dSNick Piggin 16659e6e0a12SSteven Whitehouse static void gfs2_destroy_inode(struct inode *inode) 16669e6e0a12SSteven Whitehouse { 1667fa0d7e3dSNick Piggin call_rcu(&inode->i_rcu, gfs2_i_callback); 16689e6e0a12SSteven Whitehouse } 16699e6e0a12SSteven Whitehouse 16709e6e0a12SSteven Whitehouse const struct super_operations gfs2_super_ops = { 16719e6e0a12SSteven Whitehouse .alloc_inode = gfs2_alloc_inode, 16729e6e0a12SSteven Whitehouse .destroy_inode = gfs2_destroy_inode, 16739e6e0a12SSteven Whitehouse .write_inode = gfs2_write_inode, 1674ab9bbda0SSteven Whitehouse .dirty_inode = gfs2_dirty_inode, 1675d5c1515cSAl Viro .evict_inode = gfs2_evict_inode, 16769e6e0a12SSteven Whitehouse .put_super = gfs2_put_super, 16779e6e0a12SSteven Whitehouse .sync_fs = gfs2_sync_fs, 16782e60d768SBenjamin Marzinski .freeze_super = gfs2_freeze, 16792e60d768SBenjamin Marzinski .thaw_super = gfs2_unfreeze, 16809e6e0a12SSteven Whitehouse .statfs = gfs2_statfs, 16819e6e0a12SSteven Whitehouse .remount_fs = gfs2_remount_fs, 16829e6e0a12SSteven Whitehouse .drop_inode = gfs2_drop_inode, 16839e6e0a12SSteven Whitehouse .show_options = gfs2_show_options, 16849e6e0a12SSteven Whitehouse }; 16859e6e0a12SSteven Whitehouse 1686