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 109e6e0a12SSteven Whitehouse #include <linux/bio.h> 11b3b94faaSDavid Teigland #include <linux/sched.h> 12b3b94faaSDavid Teigland #include <linux/slab.h> 13b3b94faaSDavid Teigland #include <linux/spinlock.h> 14b3b94faaSDavid Teigland #include <linux/completion.h> 15b3b94faaSDavid Teigland #include <linux/buffer_head.h> 169e6e0a12SSteven Whitehouse #include <linux/statfs.h> 179e6e0a12SSteven Whitehouse #include <linux/seq_file.h> 189e6e0a12SSteven Whitehouse #include <linux/mount.h> 199e6e0a12SSteven Whitehouse #include <linux/kthread.h> 209e6e0a12SSteven Whitehouse #include <linux/delay.h> 215c676f6dSSteven Whitehouse #include <linux/gfs2_ondisk.h> 229e6e0a12SSteven Whitehouse #include <linux/crc32.h> 239e6e0a12SSteven Whitehouse #include <linux/time.h> 24e402746aSSteven Whitehouse #include <linux/wait.h> 25a9185b41SChristoph Hellwig #include <linux/writeback.h> 264667a0ecSSteven Whitehouse #include <linux/backing-dev.h> 27b3b94faaSDavid Teigland 28b3b94faaSDavid Teigland #include "gfs2.h" 295c676f6dSSteven Whitehouse #include "incore.h" 30b3b94faaSDavid Teigland #include "bmap.h" 31b3b94faaSDavid Teigland #include "dir.h" 32b3b94faaSDavid Teigland #include "glock.h" 33b3b94faaSDavid Teigland #include "glops.h" 34b3b94faaSDavid Teigland #include "inode.h" 35b3b94faaSDavid Teigland #include "log.h" 36b3b94faaSDavid Teigland #include "meta_io.h" 37b3b94faaSDavid Teigland #include "quota.h" 38b3b94faaSDavid Teigland #include "recovery.h" 39b3b94faaSDavid Teigland #include "rgrp.h" 40b3b94faaSDavid Teigland #include "super.h" 41b3b94faaSDavid Teigland #include "trans.h" 425c676f6dSSteven Whitehouse #include "util.h" 439e6e0a12SSteven Whitehouse #include "sys.h" 44307cf6e6SSteven Whitehouse #include "xattr.h" 459e6e0a12SSteven Whitehouse 469e6e0a12SSteven Whitehouse #define args_neq(a1, a2, x) ((a1)->ar_##x != (a2)->ar_##x) 479e6e0a12SSteven Whitehouse 489e6e0a12SSteven Whitehouse enum { 499e6e0a12SSteven Whitehouse Opt_lockproto, 509e6e0a12SSteven Whitehouse Opt_locktable, 519e6e0a12SSteven Whitehouse Opt_hostdata, 529e6e0a12SSteven Whitehouse Opt_spectator, 539e6e0a12SSteven Whitehouse Opt_ignore_local_fs, 549e6e0a12SSteven Whitehouse Opt_localflocks, 559e6e0a12SSteven Whitehouse Opt_localcaching, 569e6e0a12SSteven Whitehouse Opt_debug, 579e6e0a12SSteven Whitehouse Opt_nodebug, 589e6e0a12SSteven Whitehouse Opt_upgrade, 599e6e0a12SSteven Whitehouse Opt_acl, 609e6e0a12SSteven Whitehouse Opt_noacl, 619e6e0a12SSteven Whitehouse Opt_quota_off, 629e6e0a12SSteven Whitehouse Opt_quota_account, 639e6e0a12SSteven Whitehouse Opt_quota_on, 649e6e0a12SSteven Whitehouse Opt_quota, 659e6e0a12SSteven Whitehouse Opt_noquota, 669e6e0a12SSteven Whitehouse Opt_suiddir, 679e6e0a12SSteven Whitehouse Opt_nosuiddir, 689e6e0a12SSteven Whitehouse Opt_data_writeback, 699e6e0a12SSteven Whitehouse Opt_data_ordered, 709e6e0a12SSteven Whitehouse Opt_meta, 719e6e0a12SSteven Whitehouse Opt_discard, 729e6e0a12SSteven Whitehouse Opt_nodiscard, 739e6e0a12SSteven Whitehouse Opt_commit, 74d34843d0SBob Peterson Opt_err_withdraw, 75d34843d0SBob Peterson Opt_err_panic, 763d3c10f2SBenjamin Marzinski Opt_statfs_quantum, 773d3c10f2SBenjamin Marzinski Opt_statfs_percent, 783d3c10f2SBenjamin Marzinski Opt_quota_quantum, 79f25934c5SChristoph Hellwig Opt_barrier, 80f25934c5SChristoph Hellwig Opt_nobarrier, 8190306c41SBenjamin Marzinski Opt_rgrplvb, 8290306c41SBenjamin Marzinski Opt_norgrplvb, 839e6e0a12SSteven Whitehouse Opt_error, 849e6e0a12SSteven Whitehouse }; 859e6e0a12SSteven Whitehouse 869e6e0a12SSteven Whitehouse static const match_table_t tokens = { 879e6e0a12SSteven Whitehouse {Opt_lockproto, "lockproto=%s"}, 889e6e0a12SSteven Whitehouse {Opt_locktable, "locktable=%s"}, 899e6e0a12SSteven Whitehouse {Opt_hostdata, "hostdata=%s"}, 909e6e0a12SSteven Whitehouse {Opt_spectator, "spectator"}, 9143f74c19SSteven Whitehouse {Opt_spectator, "norecovery"}, 929e6e0a12SSteven Whitehouse {Opt_ignore_local_fs, "ignore_local_fs"}, 939e6e0a12SSteven Whitehouse {Opt_localflocks, "localflocks"}, 949e6e0a12SSteven Whitehouse {Opt_localcaching, "localcaching"}, 959e6e0a12SSteven Whitehouse {Opt_debug, "debug"}, 969e6e0a12SSteven Whitehouse {Opt_nodebug, "nodebug"}, 979e6e0a12SSteven Whitehouse {Opt_upgrade, "upgrade"}, 989e6e0a12SSteven Whitehouse {Opt_acl, "acl"}, 999e6e0a12SSteven Whitehouse {Opt_noacl, "noacl"}, 1009e6e0a12SSteven Whitehouse {Opt_quota_off, "quota=off"}, 1019e6e0a12SSteven Whitehouse {Opt_quota_account, "quota=account"}, 1029e6e0a12SSteven Whitehouse {Opt_quota_on, "quota=on"}, 1039e6e0a12SSteven Whitehouse {Opt_quota, "quota"}, 1049e6e0a12SSteven Whitehouse {Opt_noquota, "noquota"}, 1059e6e0a12SSteven Whitehouse {Opt_suiddir, "suiddir"}, 1069e6e0a12SSteven Whitehouse {Opt_nosuiddir, "nosuiddir"}, 1079e6e0a12SSteven Whitehouse {Opt_data_writeback, "data=writeback"}, 1089e6e0a12SSteven Whitehouse {Opt_data_ordered, "data=ordered"}, 1099e6e0a12SSteven Whitehouse {Opt_meta, "meta"}, 1109e6e0a12SSteven Whitehouse {Opt_discard, "discard"}, 1119e6e0a12SSteven Whitehouse {Opt_nodiscard, "nodiscard"}, 1129e6e0a12SSteven Whitehouse {Opt_commit, "commit=%d"}, 113d34843d0SBob Peterson {Opt_err_withdraw, "errors=withdraw"}, 114d34843d0SBob Peterson {Opt_err_panic, "errors=panic"}, 1153d3c10f2SBenjamin Marzinski {Opt_statfs_quantum, "statfs_quantum=%d"}, 1163d3c10f2SBenjamin Marzinski {Opt_statfs_percent, "statfs_percent=%d"}, 1173d3c10f2SBenjamin Marzinski {Opt_quota_quantum, "quota_quantum=%d"}, 118f25934c5SChristoph Hellwig {Opt_barrier, "barrier"}, 119f25934c5SChristoph Hellwig {Opt_nobarrier, "nobarrier"}, 12090306c41SBenjamin Marzinski {Opt_rgrplvb, "rgrplvb"}, 12190306c41SBenjamin Marzinski {Opt_norgrplvb, "norgrplvb"}, 1229e6e0a12SSteven Whitehouse {Opt_error, NULL} 1239e6e0a12SSteven Whitehouse }; 1249e6e0a12SSteven Whitehouse 1259e6e0a12SSteven Whitehouse /** 1269e6e0a12SSteven Whitehouse * gfs2_mount_args - Parse mount options 127f55073ffSSteven Whitehouse * @args: The structure into which the parsed options will be written 128f55073ffSSteven Whitehouse * @options: The options to parse 1299e6e0a12SSteven Whitehouse * 1309e6e0a12SSteven Whitehouse * Return: errno 1319e6e0a12SSteven Whitehouse */ 1329e6e0a12SSteven Whitehouse 133f55073ffSSteven Whitehouse int gfs2_mount_args(struct gfs2_args *args, char *options) 1349e6e0a12SSteven Whitehouse { 1359e6e0a12SSteven Whitehouse char *o; 1369e6e0a12SSteven Whitehouse int token; 1379e6e0a12SSteven Whitehouse substring_t tmp[MAX_OPT_ARGS]; 1389e6e0a12SSteven Whitehouse int rv; 1399e6e0a12SSteven Whitehouse 1409e6e0a12SSteven Whitehouse /* Split the options into tokens with the "," character and 1419e6e0a12SSteven Whitehouse process them */ 1429e6e0a12SSteven Whitehouse 1439e6e0a12SSteven Whitehouse while (1) { 1449e6e0a12SSteven Whitehouse o = strsep(&options, ","); 1459e6e0a12SSteven Whitehouse if (o == NULL) 1469e6e0a12SSteven Whitehouse break; 1479e6e0a12SSteven Whitehouse if (*o == '\0') 1489e6e0a12SSteven Whitehouse continue; 1499e6e0a12SSteven Whitehouse 1509e6e0a12SSteven Whitehouse token = match_token(o, tokens, tmp); 1519e6e0a12SSteven Whitehouse switch (token) { 1529e6e0a12SSteven Whitehouse case Opt_lockproto: 1539e6e0a12SSteven Whitehouse match_strlcpy(args->ar_lockproto, &tmp[0], 1549e6e0a12SSteven Whitehouse GFS2_LOCKNAME_LEN); 1559e6e0a12SSteven Whitehouse break; 1569e6e0a12SSteven Whitehouse case Opt_locktable: 1579e6e0a12SSteven Whitehouse match_strlcpy(args->ar_locktable, &tmp[0], 1589e6e0a12SSteven Whitehouse GFS2_LOCKNAME_LEN); 1599e6e0a12SSteven Whitehouse break; 1609e6e0a12SSteven Whitehouse case Opt_hostdata: 1619e6e0a12SSteven Whitehouse match_strlcpy(args->ar_hostdata, &tmp[0], 1629e6e0a12SSteven Whitehouse GFS2_LOCKNAME_LEN); 1639e6e0a12SSteven Whitehouse break; 1649e6e0a12SSteven Whitehouse case Opt_spectator: 1659e6e0a12SSteven Whitehouse args->ar_spectator = 1; 1669e6e0a12SSteven Whitehouse break; 1679e6e0a12SSteven Whitehouse case Opt_ignore_local_fs: 168f57a024eSSteven Whitehouse /* Retained for backwards compat only */ 1699e6e0a12SSteven Whitehouse break; 1709e6e0a12SSteven Whitehouse case Opt_localflocks: 1719e6e0a12SSteven Whitehouse args->ar_localflocks = 1; 1729e6e0a12SSteven Whitehouse break; 1739e6e0a12SSteven Whitehouse case Opt_localcaching: 174c2048b00SSteven Whitehouse /* Retained for backwards compat only */ 1759e6e0a12SSteven Whitehouse break; 1769e6e0a12SSteven Whitehouse case Opt_debug: 177d34843d0SBob Peterson if (args->ar_errors == GFS2_ERRORS_PANIC) { 178fc554ed3SFabian Frederick pr_warn("GFS2: -o debug and -o errors=panic " 179d34843d0SBob Peterson "are mutually exclusive.\n"); 180d34843d0SBob Peterson return -EINVAL; 181d34843d0SBob Peterson } 1829e6e0a12SSteven Whitehouse args->ar_debug = 1; 1839e6e0a12SSteven Whitehouse break; 1849e6e0a12SSteven Whitehouse case Opt_nodebug: 1859e6e0a12SSteven Whitehouse args->ar_debug = 0; 1869e6e0a12SSteven Whitehouse break; 1879e6e0a12SSteven Whitehouse case Opt_upgrade: 188c80dbb58SSteven Whitehouse /* Retained for backwards compat only */ 1899e6e0a12SSteven Whitehouse break; 1909e6e0a12SSteven Whitehouse case Opt_acl: 1919e6e0a12SSteven Whitehouse args->ar_posix_acl = 1; 1929e6e0a12SSteven Whitehouse break; 1939e6e0a12SSteven Whitehouse case Opt_noacl: 1949e6e0a12SSteven Whitehouse args->ar_posix_acl = 0; 1959e6e0a12SSteven Whitehouse break; 1969e6e0a12SSteven Whitehouse case Opt_quota_off: 1979e6e0a12SSteven Whitehouse case Opt_noquota: 1989e6e0a12SSteven Whitehouse args->ar_quota = GFS2_QUOTA_OFF; 1999e6e0a12SSteven Whitehouse break; 2009e6e0a12SSteven Whitehouse case Opt_quota_account: 2019e6e0a12SSteven Whitehouse args->ar_quota = GFS2_QUOTA_ACCOUNT; 2029e6e0a12SSteven Whitehouse break; 2039e6e0a12SSteven Whitehouse case Opt_quota_on: 2049e6e0a12SSteven Whitehouse case Opt_quota: 2059e6e0a12SSteven Whitehouse args->ar_quota = GFS2_QUOTA_ON; 2069e6e0a12SSteven Whitehouse break; 2079e6e0a12SSteven Whitehouse case Opt_suiddir: 2089e6e0a12SSteven Whitehouse args->ar_suiddir = 1; 2099e6e0a12SSteven Whitehouse break; 2109e6e0a12SSteven Whitehouse case Opt_nosuiddir: 2119e6e0a12SSteven Whitehouse args->ar_suiddir = 0; 2129e6e0a12SSteven Whitehouse break; 2139e6e0a12SSteven Whitehouse case Opt_data_writeback: 2149e6e0a12SSteven Whitehouse args->ar_data = GFS2_DATA_WRITEBACK; 2159e6e0a12SSteven Whitehouse break; 2169e6e0a12SSteven Whitehouse case Opt_data_ordered: 2179e6e0a12SSteven Whitehouse args->ar_data = GFS2_DATA_ORDERED; 2189e6e0a12SSteven Whitehouse break; 2199e6e0a12SSteven Whitehouse case Opt_meta: 2209e6e0a12SSteven Whitehouse args->ar_meta = 1; 2219e6e0a12SSteven Whitehouse break; 2229e6e0a12SSteven Whitehouse case Opt_discard: 2239e6e0a12SSteven Whitehouse args->ar_discard = 1; 2249e6e0a12SSteven Whitehouse break; 2259e6e0a12SSteven Whitehouse case Opt_nodiscard: 2269e6e0a12SSteven Whitehouse args->ar_discard = 0; 2279e6e0a12SSteven Whitehouse break; 2289e6e0a12SSteven Whitehouse case Opt_commit: 2299e6e0a12SSteven Whitehouse rv = match_int(&tmp[0], &args->ar_commit); 2309e6e0a12SSteven Whitehouse if (rv || args->ar_commit <= 0) { 231fc554ed3SFabian Frederick pr_warn("GFS2: commit mount option requires a positive numeric argument\n"); 2329e6e0a12SSteven Whitehouse return rv ? rv : -EINVAL; 2339e6e0a12SSteven Whitehouse } 2349e6e0a12SSteven Whitehouse break; 2353d3c10f2SBenjamin Marzinski case Opt_statfs_quantum: 2363d3c10f2SBenjamin Marzinski rv = match_int(&tmp[0], &args->ar_statfs_quantum); 2373d3c10f2SBenjamin Marzinski if (rv || args->ar_statfs_quantum < 0) { 238fc554ed3SFabian Frederick pr_warn("GFS2: statfs_quantum mount option requires a non-negative numeric argument\n"); 2393d3c10f2SBenjamin Marzinski return rv ? rv : -EINVAL; 2403d3c10f2SBenjamin Marzinski } 2413d3c10f2SBenjamin Marzinski break; 2423d3c10f2SBenjamin Marzinski case Opt_quota_quantum: 2433d3c10f2SBenjamin Marzinski rv = match_int(&tmp[0], &args->ar_quota_quantum); 2443d3c10f2SBenjamin Marzinski if (rv || args->ar_quota_quantum <= 0) { 245fc554ed3SFabian Frederick pr_warn("GFS2: quota_quantum mount option requires a positive numeric argument\n"); 2463d3c10f2SBenjamin Marzinski return rv ? rv : -EINVAL; 2473d3c10f2SBenjamin Marzinski } 2483d3c10f2SBenjamin Marzinski break; 2493d3c10f2SBenjamin Marzinski case Opt_statfs_percent: 2503d3c10f2SBenjamin Marzinski rv = match_int(&tmp[0], &args->ar_statfs_percent); 2513d3c10f2SBenjamin Marzinski if (rv || args->ar_statfs_percent < 0 || 2523d3c10f2SBenjamin Marzinski args->ar_statfs_percent > 100) { 253fc554ed3SFabian Frederick pr_warn("statfs_percent mount option requires a numeric argument between 0 and 100\n"); 2543d3c10f2SBenjamin Marzinski return rv ? rv : -EINVAL; 2553d3c10f2SBenjamin Marzinski } 2563d3c10f2SBenjamin Marzinski break; 257d34843d0SBob Peterson case Opt_err_withdraw: 258d34843d0SBob Peterson args->ar_errors = GFS2_ERRORS_WITHDRAW; 259d34843d0SBob Peterson break; 260d34843d0SBob Peterson case Opt_err_panic: 261d34843d0SBob Peterson if (args->ar_debug) { 262fc554ed3SFabian Frederick pr_warn("GFS2: -o debug and -o errors=panic " 263d34843d0SBob Peterson "are mutually exclusive.\n"); 264d34843d0SBob Peterson return -EINVAL; 265d34843d0SBob Peterson } 266d34843d0SBob Peterson args->ar_errors = GFS2_ERRORS_PANIC; 267d34843d0SBob Peterson break; 268f25934c5SChristoph Hellwig case Opt_barrier: 269f25934c5SChristoph Hellwig args->ar_nobarrier = 0; 270f25934c5SChristoph Hellwig break; 271f25934c5SChristoph Hellwig case Opt_nobarrier: 272f25934c5SChristoph Hellwig args->ar_nobarrier = 1; 273f25934c5SChristoph Hellwig break; 27490306c41SBenjamin Marzinski case Opt_rgrplvb: 27590306c41SBenjamin Marzinski args->ar_rgrplvb = 1; 27690306c41SBenjamin Marzinski break; 27790306c41SBenjamin Marzinski case Opt_norgrplvb: 27890306c41SBenjamin Marzinski args->ar_rgrplvb = 0; 27990306c41SBenjamin Marzinski break; 2809e6e0a12SSteven Whitehouse case Opt_error: 2819e6e0a12SSteven Whitehouse default: 282fc554ed3SFabian Frederick pr_warn("GFS2: invalid mount option: %s\n", o); 2839e6e0a12SSteven Whitehouse return -EINVAL; 2849e6e0a12SSteven Whitehouse } 2859e6e0a12SSteven Whitehouse } 2869e6e0a12SSteven Whitehouse 2879e6e0a12SSteven Whitehouse return 0; 2889e6e0a12SSteven Whitehouse } 289b3b94faaSDavid Teigland 290fefc03bfSSteven Whitehouse /** 291fefc03bfSSteven Whitehouse * gfs2_jindex_free - Clear all the journal index information 292fefc03bfSSteven Whitehouse * @sdp: The GFS2 superblock 293fefc03bfSSteven Whitehouse * 294fefc03bfSSteven Whitehouse */ 295fefc03bfSSteven Whitehouse 296fefc03bfSSteven Whitehouse void gfs2_jindex_free(struct gfs2_sbd *sdp) 297fefc03bfSSteven Whitehouse { 298b50f227bSSteven Whitehouse struct list_head list; 299fefc03bfSSteven Whitehouse struct gfs2_jdesc *jd; 300fefc03bfSSteven Whitehouse 301fefc03bfSSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 302fefc03bfSSteven Whitehouse list_add(&list, &sdp->sd_jindex_list); 303fefc03bfSSteven Whitehouse list_del_init(&sdp->sd_jindex_list); 304fefc03bfSSteven Whitehouse sdp->sd_journals = 0; 305fefc03bfSSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 306fefc03bfSSteven Whitehouse 307fefc03bfSSteven Whitehouse while (!list_empty(&list)) { 308fefc03bfSSteven Whitehouse jd = list_entry(list.next, struct gfs2_jdesc, jd_list); 309b50f227bSSteven Whitehouse gfs2_free_journal_extents(jd); 310fefc03bfSSteven Whitehouse list_del(&jd->jd_list); 311fefc03bfSSteven Whitehouse iput(jd->jd_inode); 312fefc03bfSSteven Whitehouse kfree(jd); 313fefc03bfSSteven Whitehouse } 314fefc03bfSSteven Whitehouse } 315fefc03bfSSteven Whitehouse 316b3b94faaSDavid Teigland static struct gfs2_jdesc *jdesc_find_i(struct list_head *head, unsigned int jid) 317b3b94faaSDavid Teigland { 318b3b94faaSDavid Teigland struct gfs2_jdesc *jd; 319b3b94faaSDavid Teigland int found = 0; 320b3b94faaSDavid Teigland 321b3b94faaSDavid Teigland list_for_each_entry(jd, head, jd_list) { 322b3b94faaSDavid Teigland if (jd->jd_jid == jid) { 323b3b94faaSDavid Teigland found = 1; 324b3b94faaSDavid Teigland break; 325b3b94faaSDavid Teigland } 326b3b94faaSDavid Teigland } 327b3b94faaSDavid Teigland 328b3b94faaSDavid Teigland if (!found) 329b3b94faaSDavid Teigland jd = NULL; 330b3b94faaSDavid Teigland 331b3b94faaSDavid Teigland return jd; 332b3b94faaSDavid Teigland } 333b3b94faaSDavid Teigland 334b3b94faaSDavid Teigland struct gfs2_jdesc *gfs2_jdesc_find(struct gfs2_sbd *sdp, unsigned int jid) 335b3b94faaSDavid Teigland { 336b3b94faaSDavid Teigland struct gfs2_jdesc *jd; 337b3b94faaSDavid Teigland 338b3b94faaSDavid Teigland spin_lock(&sdp->sd_jindex_spin); 339b3b94faaSDavid Teigland jd = jdesc_find_i(&sdp->sd_jindex_list, jid); 340b3b94faaSDavid Teigland spin_unlock(&sdp->sd_jindex_spin); 341b3b94faaSDavid Teigland 342b3b94faaSDavid Teigland return jd; 343b3b94faaSDavid Teigland } 344b3b94faaSDavid Teigland 345b3b94faaSDavid Teigland int gfs2_jdesc_check(struct gfs2_jdesc *jd) 346b3b94faaSDavid Teigland { 347feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 348feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 349a2e0f799SSteven Whitehouse u64 size = i_size_read(jd->jd_inode); 350b3b94faaSDavid Teigland 351a2e0f799SSteven Whitehouse if (gfs2_check_internal_file_size(jd->jd_inode, 8 << 20, 1 << 30)) 352b3b94faaSDavid Teigland return -EIO; 353b3b94faaSDavid Teigland 354a2e0f799SSteven Whitehouse jd->jd_blocks = size >> sdp->sd_sb.sb_bsize_shift; 355a2e0f799SSteven Whitehouse 356a2e0f799SSteven Whitehouse if (gfs2_write_alloc_required(ip, 0, size)) { 357b3b94faaSDavid Teigland gfs2_consist_inode(ip); 358461cb419SBob Peterson return -EIO; 359b3b94faaSDavid Teigland } 360b3b94faaSDavid Teigland 361461cb419SBob Peterson return 0; 362b3b94faaSDavid Teigland } 363b3b94faaSDavid Teigland 3648ad151c2SSteven Whitehouse static int init_threads(struct gfs2_sbd *sdp) 3658ad151c2SSteven Whitehouse { 3668ad151c2SSteven Whitehouse struct task_struct *p; 3678ad151c2SSteven Whitehouse int error = 0; 3688ad151c2SSteven Whitehouse 3698ad151c2SSteven Whitehouse p = kthread_run(gfs2_logd, sdp, "gfs2_logd"); 3708ad151c2SSteven Whitehouse if (IS_ERR(p)) { 3718ad151c2SSteven Whitehouse error = PTR_ERR(p); 3728ad151c2SSteven Whitehouse fs_err(sdp, "can't start logd thread: %d\n", error); 3738ad151c2SSteven Whitehouse return error; 3748ad151c2SSteven Whitehouse } 3758ad151c2SSteven Whitehouse sdp->sd_logd_process = p; 3768ad151c2SSteven Whitehouse 3778ad151c2SSteven Whitehouse p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad"); 3788ad151c2SSteven Whitehouse if (IS_ERR(p)) { 3798ad151c2SSteven Whitehouse error = PTR_ERR(p); 3808ad151c2SSteven Whitehouse fs_err(sdp, "can't start quotad thread: %d\n", error); 3818ad151c2SSteven Whitehouse goto fail; 3828ad151c2SSteven Whitehouse } 3838ad151c2SSteven Whitehouse sdp->sd_quotad_process = p; 3848ad151c2SSteven Whitehouse return 0; 3858ad151c2SSteven Whitehouse 3868ad151c2SSteven Whitehouse fail: 3878ad151c2SSteven Whitehouse kthread_stop(sdp->sd_logd_process); 3888ad151c2SSteven Whitehouse return error; 3898ad151c2SSteven Whitehouse } 3908ad151c2SSteven Whitehouse 391b3b94faaSDavid Teigland /** 392b3b94faaSDavid Teigland * gfs2_make_fs_rw - Turn a Read-Only FS into a Read-Write one 393b3b94faaSDavid Teigland * @sdp: the filesystem 394b3b94faaSDavid Teigland * 395b3b94faaSDavid Teigland * Returns: errno 396b3b94faaSDavid Teigland */ 397b3b94faaSDavid Teigland 398b3b94faaSDavid Teigland int gfs2_make_fs_rw(struct gfs2_sbd *sdp) 399b3b94faaSDavid Teigland { 400feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); 4015c676f6dSSteven Whitehouse struct gfs2_glock *j_gl = ip->i_gl; 402b3b94faaSDavid Teigland struct gfs2_holder t_gh; 40355167622SAl Viro struct gfs2_log_header_host head; 404b3b94faaSDavid Teigland int error; 405b3b94faaSDavid Teigland 4068ad151c2SSteven Whitehouse error = init_threads(sdp); 407b3b94faaSDavid Teigland if (error) 408b3b94faaSDavid Teigland return error; 409b3b94faaSDavid Teigland 4108ad151c2SSteven Whitehouse error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, 0, &t_gh); 4118ad151c2SSteven Whitehouse if (error) 4128ad151c2SSteven Whitehouse goto fail_threads; 4138ad151c2SSteven Whitehouse 4141a14d3a6SSteven Whitehouse j_gl->gl_ops->go_inval(j_gl, DIO_METADATA); 415b3b94faaSDavid Teigland 416b3b94faaSDavid Teigland error = gfs2_find_jhead(sdp->sd_jdesc, &head); 417b3b94faaSDavid Teigland if (error) 418b3b94faaSDavid Teigland goto fail; 419b3b94faaSDavid Teigland 420b3b94faaSDavid Teigland if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) { 421b3b94faaSDavid Teigland gfs2_consist(sdp); 422b3b94faaSDavid Teigland error = -EIO; 423b3b94faaSDavid Teigland goto fail; 424b3b94faaSDavid Teigland } 425b3b94faaSDavid Teigland 426b3b94faaSDavid Teigland /* Initialize some head of the log stuff */ 427b3b94faaSDavid Teigland sdp->sd_log_sequence = head.lh_sequence + 1; 428b3b94faaSDavid Teigland gfs2_log_pointers_init(sdp, head.lh_blkno); 429b3b94faaSDavid Teigland 430b3b94faaSDavid Teigland error = gfs2_quota_init(sdp); 431b3b94faaSDavid Teigland if (error) 432a91ea69fSSteven Whitehouse goto fail; 433b3b94faaSDavid Teigland 434b3b94faaSDavid Teigland set_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); 435b3b94faaSDavid Teigland 436b3b94faaSDavid Teigland gfs2_glock_dq_uninit(&t_gh); 437b3b94faaSDavid Teigland 438b3b94faaSDavid Teigland return 0; 439b3b94faaSDavid Teigland 440b3b94faaSDavid Teigland fail: 441b3b94faaSDavid Teigland t_gh.gh_flags |= GL_NOCACHE; 442b3b94faaSDavid Teigland gfs2_glock_dq_uninit(&t_gh); 4438ad151c2SSteven Whitehouse fail_threads: 4448ad151c2SSteven Whitehouse kthread_stop(sdp->sd_quotad_process); 4458ad151c2SSteven Whitehouse kthread_stop(sdp->sd_logd_process); 446b3b94faaSDavid Teigland return error; 447b3b94faaSDavid Teigland } 448b3b94faaSDavid Teigland 4491946f70aSBenjamin Marzinski void gfs2_statfs_change_in(struct gfs2_statfs_change_host *sc, const void *buf) 450bb8d8a6fSSteven Whitehouse { 451bb8d8a6fSSteven Whitehouse const struct gfs2_statfs_change *str = buf; 452bb8d8a6fSSteven Whitehouse 453bb8d8a6fSSteven Whitehouse sc->sc_total = be64_to_cpu(str->sc_total); 454bb8d8a6fSSteven Whitehouse sc->sc_free = be64_to_cpu(str->sc_free); 455bb8d8a6fSSteven Whitehouse sc->sc_dinodes = be64_to_cpu(str->sc_dinodes); 456bb8d8a6fSSteven Whitehouse } 457bb8d8a6fSSteven Whitehouse 458bb8d8a6fSSteven Whitehouse static void gfs2_statfs_change_out(const struct gfs2_statfs_change_host *sc, void *buf) 459bb8d8a6fSSteven Whitehouse { 460bb8d8a6fSSteven Whitehouse struct gfs2_statfs_change *str = buf; 461bb8d8a6fSSteven Whitehouse 462bb8d8a6fSSteven Whitehouse str->sc_total = cpu_to_be64(sc->sc_total); 463bb8d8a6fSSteven Whitehouse str->sc_free = cpu_to_be64(sc->sc_free); 464bb8d8a6fSSteven Whitehouse str->sc_dinodes = cpu_to_be64(sc->sc_dinodes); 465bb8d8a6fSSteven Whitehouse } 466bb8d8a6fSSteven Whitehouse 467b3b94faaSDavid Teigland int gfs2_statfs_init(struct gfs2_sbd *sdp) 468b3b94faaSDavid Teigland { 469feaa7bbaSSteven Whitehouse struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode); 470bd209cc0SAl Viro struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; 471feaa7bbaSSteven Whitehouse struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); 472bd209cc0SAl Viro struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; 473b3b94faaSDavid Teigland struct buffer_head *m_bh, *l_bh; 474b3b94faaSDavid Teigland struct gfs2_holder gh; 475b3b94faaSDavid Teigland int error; 476b3b94faaSDavid Teigland 477b3b94faaSDavid Teigland error = gfs2_glock_nq_init(m_ip->i_gl, LM_ST_EXCLUSIVE, GL_NOCACHE, 478b3b94faaSDavid Teigland &gh); 479b3b94faaSDavid Teigland if (error) 480b3b94faaSDavid Teigland return error; 481b3b94faaSDavid Teigland 482b3b94faaSDavid Teigland error = gfs2_meta_inode_buffer(m_ip, &m_bh); 483b3b94faaSDavid Teigland if (error) 484b3b94faaSDavid Teigland goto out; 485b3b94faaSDavid Teigland 486b3b94faaSDavid Teigland if (sdp->sd_args.ar_spectator) { 487b3b94faaSDavid Teigland spin_lock(&sdp->sd_statfs_spin); 488b3b94faaSDavid Teigland gfs2_statfs_change_in(m_sc, m_bh->b_data + 489b3b94faaSDavid Teigland sizeof(struct gfs2_dinode)); 490b3b94faaSDavid Teigland spin_unlock(&sdp->sd_statfs_spin); 491b3b94faaSDavid Teigland } else { 492b3b94faaSDavid Teigland error = gfs2_meta_inode_buffer(l_ip, &l_bh); 493b3b94faaSDavid Teigland if (error) 494b3b94faaSDavid Teigland goto out_m_bh; 495b3b94faaSDavid Teigland 496b3b94faaSDavid Teigland spin_lock(&sdp->sd_statfs_spin); 497b3b94faaSDavid Teigland gfs2_statfs_change_in(m_sc, m_bh->b_data + 498b3b94faaSDavid Teigland sizeof(struct gfs2_dinode)); 499b3b94faaSDavid Teigland gfs2_statfs_change_in(l_sc, l_bh->b_data + 500b3b94faaSDavid Teigland sizeof(struct gfs2_dinode)); 501b3b94faaSDavid Teigland spin_unlock(&sdp->sd_statfs_spin); 502b3b94faaSDavid Teigland 503b3b94faaSDavid Teigland brelse(l_bh); 504b3b94faaSDavid Teigland } 505b3b94faaSDavid Teigland 506b3b94faaSDavid Teigland out_m_bh: 507b3b94faaSDavid Teigland brelse(m_bh); 508b3b94faaSDavid Teigland out: 509b3b94faaSDavid Teigland gfs2_glock_dq_uninit(&gh); 510b3b94faaSDavid Teigland return 0; 511b3b94faaSDavid Teigland } 512b3b94faaSDavid Teigland 513cd915493SSteven Whitehouse void gfs2_statfs_change(struct gfs2_sbd *sdp, s64 total, s64 free, 514cd915493SSteven Whitehouse s64 dinodes) 515b3b94faaSDavid Teigland { 516feaa7bbaSSteven Whitehouse struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); 517bd209cc0SAl Viro struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; 5183d3c10f2SBenjamin Marzinski struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; 519b3b94faaSDavid Teigland struct buffer_head *l_bh; 520c14f5735SBenjamin Marzinski s64 x, y; 521c14f5735SBenjamin Marzinski int need_sync = 0; 522b3b94faaSDavid Teigland int error; 523b3b94faaSDavid Teigland 524b3b94faaSDavid Teigland error = gfs2_meta_inode_buffer(l_ip, &l_bh); 525b3b94faaSDavid Teigland if (error) 526b3b94faaSDavid Teigland return; 527b3b94faaSDavid Teigland 528350a9b0aSSteven Whitehouse gfs2_trans_add_meta(l_ip->i_gl, l_bh); 529b3b94faaSDavid Teigland 530b3b94faaSDavid Teigland spin_lock(&sdp->sd_statfs_spin); 531b3b94faaSDavid Teigland l_sc->sc_total += total; 532b3b94faaSDavid Teigland l_sc->sc_free += free; 533b3b94faaSDavid Teigland l_sc->sc_dinodes += dinodes; 534907b9bceSSteven Whitehouse gfs2_statfs_change_out(l_sc, l_bh->b_data + sizeof(struct gfs2_dinode)); 535c14f5735SBenjamin Marzinski if (sdp->sd_args.ar_statfs_percent) { 536c14f5735SBenjamin Marzinski x = 100 * l_sc->sc_free; 537c14f5735SBenjamin Marzinski y = m_sc->sc_free * sdp->sd_args.ar_statfs_percent; 538c14f5735SBenjamin Marzinski if (x >= y || x <= -y) 539c14f5735SBenjamin Marzinski need_sync = 1; 540c14f5735SBenjamin Marzinski } 541b3b94faaSDavid Teigland spin_unlock(&sdp->sd_statfs_spin); 542b3b94faaSDavid Teigland 543b3b94faaSDavid Teigland brelse(l_bh); 544c14f5735SBenjamin Marzinski if (need_sync) 5453d3c10f2SBenjamin Marzinski gfs2_wake_up_statfs(sdp); 546b3b94faaSDavid Teigland } 547b3b94faaSDavid Teigland 5481946f70aSBenjamin Marzinski void update_statfs(struct gfs2_sbd *sdp, struct buffer_head *m_bh, 5491946f70aSBenjamin Marzinski struct buffer_head *l_bh) 5501946f70aSBenjamin Marzinski { 5511946f70aSBenjamin Marzinski struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode); 5521946f70aSBenjamin Marzinski struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); 5531946f70aSBenjamin Marzinski struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; 5541946f70aSBenjamin Marzinski struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; 5551946f70aSBenjamin Marzinski 556350a9b0aSSteven Whitehouse gfs2_trans_add_meta(l_ip->i_gl, l_bh); 5571946f70aSBenjamin Marzinski 5581946f70aSBenjamin Marzinski spin_lock(&sdp->sd_statfs_spin); 5591946f70aSBenjamin Marzinski m_sc->sc_total += l_sc->sc_total; 5601946f70aSBenjamin Marzinski m_sc->sc_free += l_sc->sc_free; 5611946f70aSBenjamin Marzinski m_sc->sc_dinodes += l_sc->sc_dinodes; 5621946f70aSBenjamin Marzinski memset(l_sc, 0, sizeof(struct gfs2_statfs_change)); 5631946f70aSBenjamin Marzinski memset(l_bh->b_data + sizeof(struct gfs2_dinode), 5641946f70aSBenjamin Marzinski 0, sizeof(struct gfs2_statfs_change)); 5651946f70aSBenjamin Marzinski spin_unlock(&sdp->sd_statfs_spin); 5661946f70aSBenjamin Marzinski 567350a9b0aSSteven Whitehouse gfs2_trans_add_meta(m_ip->i_gl, m_bh); 5681946f70aSBenjamin Marzinski gfs2_statfs_change_out(m_sc, m_bh->b_data + sizeof(struct gfs2_dinode)); 5691946f70aSBenjamin Marzinski } 5701946f70aSBenjamin Marzinski 5718c42d637SSteven Whitehouse int gfs2_statfs_sync(struct super_block *sb, int type) 572b3b94faaSDavid Teigland { 5738c42d637SSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 574feaa7bbaSSteven Whitehouse struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode); 575feaa7bbaSSteven Whitehouse struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); 576bd209cc0SAl Viro struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; 577bd209cc0SAl Viro struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; 578b3b94faaSDavid Teigland struct gfs2_holder gh; 579b3b94faaSDavid Teigland struct buffer_head *m_bh, *l_bh; 580b3b94faaSDavid Teigland int error; 581b3b94faaSDavid Teigland 582b3b94faaSDavid Teigland error = gfs2_glock_nq_init(m_ip->i_gl, LM_ST_EXCLUSIVE, GL_NOCACHE, 583b3b94faaSDavid Teigland &gh); 584b3b94faaSDavid Teigland if (error) 585b3b94faaSDavid Teigland return error; 586b3b94faaSDavid Teigland 587b3b94faaSDavid Teigland error = gfs2_meta_inode_buffer(m_ip, &m_bh); 588b3b94faaSDavid Teigland if (error) 589b3b94faaSDavid Teigland goto out; 590b3b94faaSDavid Teigland 591b3b94faaSDavid Teigland spin_lock(&sdp->sd_statfs_spin); 592b3b94faaSDavid Teigland gfs2_statfs_change_in(m_sc, m_bh->b_data + 593b3b94faaSDavid Teigland sizeof(struct gfs2_dinode)); 594b3b94faaSDavid Teigland if (!l_sc->sc_total && !l_sc->sc_free && !l_sc->sc_dinodes) { 595b3b94faaSDavid Teigland spin_unlock(&sdp->sd_statfs_spin); 596b3b94faaSDavid Teigland goto out_bh; 597b3b94faaSDavid Teigland } 598b3b94faaSDavid Teigland spin_unlock(&sdp->sd_statfs_spin); 599b3b94faaSDavid Teigland 600b3b94faaSDavid Teigland error = gfs2_meta_inode_buffer(l_ip, &l_bh); 601b3b94faaSDavid Teigland if (error) 602b3b94faaSDavid Teigland goto out_bh; 603b3b94faaSDavid Teigland 604b3b94faaSDavid Teigland error = gfs2_trans_begin(sdp, 2 * RES_DINODE, 0); 605b3b94faaSDavid Teigland if (error) 606b3b94faaSDavid Teigland goto out_bh2; 607b3b94faaSDavid Teigland 6081946f70aSBenjamin Marzinski update_statfs(sdp, m_bh, l_bh); 6093d3c10f2SBenjamin Marzinski sdp->sd_statfs_force_sync = 0; 610b3b94faaSDavid Teigland 611b3b94faaSDavid Teigland gfs2_trans_end(sdp); 612b3b94faaSDavid Teigland 613b3b94faaSDavid Teigland out_bh2: 614b3b94faaSDavid Teigland brelse(l_bh); 615b3b94faaSDavid Teigland out_bh: 616b3b94faaSDavid Teigland brelse(m_bh); 617b3b94faaSDavid Teigland out: 618b3b94faaSDavid Teigland gfs2_glock_dq_uninit(&gh); 619b3b94faaSDavid Teigland return error; 620b3b94faaSDavid Teigland } 621b3b94faaSDavid Teigland 622b3b94faaSDavid Teigland struct lfcc { 623b3b94faaSDavid Teigland struct list_head list; 624b3b94faaSDavid Teigland struct gfs2_holder gh; 625b3b94faaSDavid Teigland }; 626b3b94faaSDavid Teigland 627b3b94faaSDavid Teigland /** 628b3b94faaSDavid Teigland * gfs2_lock_fs_check_clean - Stop all writes to the FS and check that all 629b3b94faaSDavid Teigland * journals are clean 630b3b94faaSDavid Teigland * @sdp: the file system 631b3b94faaSDavid Teigland * @state: the state to put the transaction lock into 632b3b94faaSDavid Teigland * @t_gh: the hold on the transaction lock 633b3b94faaSDavid Teigland * 634b3b94faaSDavid Teigland * Returns: errno 635b3b94faaSDavid Teigland */ 636b3b94faaSDavid Teigland 63708bc2dbcSAdrian Bunk static int gfs2_lock_fs_check_clean(struct gfs2_sbd *sdp, 63808bc2dbcSAdrian Bunk struct gfs2_holder *t_gh) 639b3b94faaSDavid Teigland { 6405c676f6dSSteven Whitehouse struct gfs2_inode *ip; 641b3b94faaSDavid Teigland struct gfs2_jdesc *jd; 642b3b94faaSDavid Teigland struct lfcc *lfcc; 643b3b94faaSDavid Teigland LIST_HEAD(list); 64455167622SAl Viro struct gfs2_log_header_host lh; 645b3b94faaSDavid Teigland int error; 646b3b94faaSDavid Teigland 647b3b94faaSDavid Teigland list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { 648b3b94faaSDavid Teigland lfcc = kmalloc(sizeof(struct lfcc), GFP_KERNEL); 649b3b94faaSDavid Teigland if (!lfcc) { 650b3b94faaSDavid Teigland error = -ENOMEM; 651b3b94faaSDavid Teigland goto out; 652b3b94faaSDavid Teigland } 653feaa7bbaSSteven Whitehouse ip = GFS2_I(jd->jd_inode); 654feaa7bbaSSteven Whitehouse error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &lfcc->gh); 655b3b94faaSDavid Teigland if (error) { 656b3b94faaSDavid Teigland kfree(lfcc); 657b3b94faaSDavid Teigland goto out; 658b3b94faaSDavid Teigland } 659b3b94faaSDavid Teigland list_add(&lfcc->list, &list); 660b3b94faaSDavid Teigland } 661b3b94faaSDavid Teigland 662b3b94faaSDavid Teigland error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_DEFERRED, 6636802e340SSteven Whitehouse GL_NOCACHE, t_gh); 664b3b94faaSDavid Teigland 665b3b94faaSDavid Teigland list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { 666b3b94faaSDavid Teigland error = gfs2_jdesc_check(jd); 667b3b94faaSDavid Teigland if (error) 668b3b94faaSDavid Teigland break; 669b3b94faaSDavid Teigland error = gfs2_find_jhead(jd, &lh); 670b3b94faaSDavid Teigland if (error) 671b3b94faaSDavid Teigland break; 672b3b94faaSDavid Teigland if (!(lh.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) { 673b3b94faaSDavid Teigland error = -EBUSY; 674b3b94faaSDavid Teigland break; 675b3b94faaSDavid Teigland } 676b3b94faaSDavid Teigland } 677b3b94faaSDavid Teigland 678b3b94faaSDavid Teigland if (error) 679b3b94faaSDavid Teigland gfs2_glock_dq_uninit(t_gh); 680b3b94faaSDavid Teigland 681b3b94faaSDavid Teigland out: 682b3b94faaSDavid Teigland while (!list_empty(&list)) { 683b3b94faaSDavid Teigland lfcc = list_entry(list.next, struct lfcc, list); 684b3b94faaSDavid Teigland list_del(&lfcc->list); 685b3b94faaSDavid Teigland gfs2_glock_dq_uninit(&lfcc->gh); 686b3b94faaSDavid Teigland kfree(lfcc); 687b3b94faaSDavid Teigland } 688b3b94faaSDavid Teigland return error; 689b3b94faaSDavid Teigland } 690b3b94faaSDavid Teigland 6919eed04cdSSteven Whitehouse void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf) 6929eed04cdSSteven Whitehouse { 6939eed04cdSSteven Whitehouse struct gfs2_dinode *str = buf; 6949eed04cdSSteven Whitehouse 6959eed04cdSSteven Whitehouse str->di_header.mh_magic = cpu_to_be32(GFS2_MAGIC); 6969eed04cdSSteven Whitehouse str->di_header.mh_type = cpu_to_be32(GFS2_METATYPE_DI); 6979eed04cdSSteven Whitehouse str->di_header.mh_format = cpu_to_be32(GFS2_FORMAT_DI); 6989eed04cdSSteven Whitehouse str->di_num.no_addr = cpu_to_be64(ip->i_no_addr); 6999eed04cdSSteven Whitehouse str->di_num.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino); 7009eed04cdSSteven Whitehouse str->di_mode = cpu_to_be32(ip->i_inode.i_mode); 701d0546426SEric W. Biederman str->di_uid = cpu_to_be32(i_uid_read(&ip->i_inode)); 702d0546426SEric W. Biederman str->di_gid = cpu_to_be32(i_gid_read(&ip->i_inode)); 7039eed04cdSSteven Whitehouse str->di_nlink = cpu_to_be32(ip->i_inode.i_nlink); 7049eed04cdSSteven Whitehouse str->di_size = cpu_to_be64(i_size_read(&ip->i_inode)); 7059eed04cdSSteven Whitehouse str->di_blocks = cpu_to_be64(gfs2_get_inode_blocks(&ip->i_inode)); 7069eed04cdSSteven Whitehouse str->di_atime = cpu_to_be64(ip->i_inode.i_atime.tv_sec); 7079eed04cdSSteven Whitehouse str->di_mtime = cpu_to_be64(ip->i_inode.i_mtime.tv_sec); 7089eed04cdSSteven Whitehouse str->di_ctime = cpu_to_be64(ip->i_inode.i_ctime.tv_sec); 7099eed04cdSSteven Whitehouse 7109eed04cdSSteven Whitehouse str->di_goal_meta = cpu_to_be64(ip->i_goal); 7119eed04cdSSteven Whitehouse str->di_goal_data = cpu_to_be64(ip->i_goal); 7129eed04cdSSteven Whitehouse str->di_generation = cpu_to_be64(ip->i_generation); 7139eed04cdSSteven Whitehouse 7149eed04cdSSteven Whitehouse str->di_flags = cpu_to_be32(ip->i_diskflags); 7159eed04cdSSteven Whitehouse str->di_height = cpu_to_be16(ip->i_height); 7169eed04cdSSteven Whitehouse str->di_payload_format = cpu_to_be32(S_ISDIR(ip->i_inode.i_mode) && 7179eed04cdSSteven Whitehouse !(ip->i_diskflags & GFS2_DIF_EXHASH) ? 7189eed04cdSSteven Whitehouse GFS2_FORMAT_DE : 0); 7199eed04cdSSteven Whitehouse str->di_depth = cpu_to_be16(ip->i_depth); 7209eed04cdSSteven Whitehouse str->di_entries = cpu_to_be32(ip->i_entries); 7219eed04cdSSteven Whitehouse 7229eed04cdSSteven Whitehouse str->di_eattr = cpu_to_be64(ip->i_eattr); 7239eed04cdSSteven Whitehouse str->di_atime_nsec = cpu_to_be32(ip->i_inode.i_atime.tv_nsec); 7249eed04cdSSteven Whitehouse str->di_mtime_nsec = cpu_to_be32(ip->i_inode.i_mtime.tv_nsec); 7259eed04cdSSteven Whitehouse str->di_ctime_nsec = cpu_to_be32(ip->i_inode.i_ctime.tv_nsec); 7269eed04cdSSteven Whitehouse } 7279e6e0a12SSteven Whitehouse 7289e6e0a12SSteven Whitehouse /** 7299e6e0a12SSteven Whitehouse * gfs2_write_inode - Make sure the inode is stable on the disk 7309e6e0a12SSteven Whitehouse * @inode: The inode 7311027efaaSSteven Whitehouse * @wbc: The writeback control structure 7329e6e0a12SSteven Whitehouse * 7339e6e0a12SSteven Whitehouse * Returns: errno 7349e6e0a12SSteven Whitehouse */ 7359e6e0a12SSteven Whitehouse 736a9185b41SChristoph Hellwig static int gfs2_write_inode(struct inode *inode, struct writeback_control *wbc) 7379e6e0a12SSteven Whitehouse { 7389e6e0a12SSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 7399e6e0a12SSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(inode); 7401027efaaSSteven Whitehouse struct address_space *metamapping = gfs2_glock2aspace(ip->i_gl); 7414667a0ecSSteven Whitehouse struct backing_dev_info *bdi = metamapping->backing_dev_info; 742ab9bbda0SSteven Whitehouse int ret = 0; 7439e6e0a12SSteven Whitehouse 744a9185b41SChristoph Hellwig if (wbc->sync_mode == WB_SYNC_ALL) 7459e6e0a12SSteven Whitehouse gfs2_log_flush(GFS2_SB(inode), ip->i_gl); 7464667a0ecSSteven Whitehouse if (bdi->dirty_exceeded) 7474667a0ecSSteven Whitehouse gfs2_ail1_flush(sdp, wbc); 7481d4ec642SSteven Whitehouse else 7491d4ec642SSteven Whitehouse filemap_fdatawrite(metamapping); 750ab9bbda0SSteven Whitehouse if (wbc->sync_mode == WB_SYNC_ALL) 7511027efaaSSteven Whitehouse ret = filemap_fdatawait(metamapping); 7521027efaaSSteven Whitehouse if (ret) 7531027efaaSSteven Whitehouse mark_inode_dirty_sync(inode); 7549e6e0a12SSteven Whitehouse return ret; 7559e6e0a12SSteven Whitehouse } 7569e6e0a12SSteven Whitehouse 7579e6e0a12SSteven Whitehouse /** 758ab9bbda0SSteven Whitehouse * gfs2_dirty_inode - check for atime updates 759ab9bbda0SSteven Whitehouse * @inode: The inode in question 760ab9bbda0SSteven Whitehouse * @flags: The type of dirty 761ab9bbda0SSteven Whitehouse * 762ab9bbda0SSteven Whitehouse * Unfortunately it can be called under any combination of inode 763ab9bbda0SSteven Whitehouse * glock and transaction lock, so we have to check carefully. 764ab9bbda0SSteven Whitehouse * 765ab9bbda0SSteven Whitehouse * At the moment this deals only with atime - it should be possible 766ab9bbda0SSteven Whitehouse * to expand that role in future, once a review of the locking has 767ab9bbda0SSteven Whitehouse * been carried out. 768ab9bbda0SSteven Whitehouse */ 769ab9bbda0SSteven Whitehouse 770ab9bbda0SSteven Whitehouse static void gfs2_dirty_inode(struct inode *inode, int flags) 771ab9bbda0SSteven Whitehouse { 772ab9bbda0SSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 773ab9bbda0SSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(inode); 774ab9bbda0SSteven Whitehouse struct buffer_head *bh; 775ab9bbda0SSteven Whitehouse struct gfs2_holder gh; 776ab9bbda0SSteven Whitehouse int need_unlock = 0; 777ab9bbda0SSteven Whitehouse int need_endtrans = 0; 778ab9bbda0SSteven Whitehouse int ret; 779ab9bbda0SSteven Whitehouse 780ab9bbda0SSteven Whitehouse if (!(flags & (I_DIRTY_DATASYNC|I_DIRTY_SYNC))) 781ab9bbda0SSteven Whitehouse return; 782ab9bbda0SSteven Whitehouse 783ab9bbda0SSteven Whitehouse if (!gfs2_glock_is_locked_by_me(ip->i_gl)) { 784ab9bbda0SSteven Whitehouse ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh); 785ab9bbda0SSteven Whitehouse if (ret) { 786ab9bbda0SSteven Whitehouse fs_err(sdp, "dirty_inode: glock %d\n", ret); 787ab9bbda0SSteven Whitehouse return; 788ab9bbda0SSteven Whitehouse } 789ab9bbda0SSteven Whitehouse need_unlock = 1; 7903d162688SBenjamin Marzinski } else if (WARN_ON_ONCE(ip->i_gl->gl_state != LM_ST_EXCLUSIVE)) 7913d162688SBenjamin Marzinski return; 792ab9bbda0SSteven Whitehouse 793ab9bbda0SSteven Whitehouse if (current->journal_info == NULL) { 794ab9bbda0SSteven Whitehouse ret = gfs2_trans_begin(sdp, RES_DINODE, 0); 795ab9bbda0SSteven Whitehouse if (ret) { 796ab9bbda0SSteven Whitehouse fs_err(sdp, "dirty_inode: gfs2_trans_begin %d\n", ret); 797ab9bbda0SSteven Whitehouse goto out; 798ab9bbda0SSteven Whitehouse } 799ab9bbda0SSteven Whitehouse need_endtrans = 1; 800ab9bbda0SSteven Whitehouse } 801ab9bbda0SSteven Whitehouse 802ab9bbda0SSteven Whitehouse ret = gfs2_meta_inode_buffer(ip, &bh); 803ab9bbda0SSteven Whitehouse if (ret == 0) { 804350a9b0aSSteven Whitehouse gfs2_trans_add_meta(ip->i_gl, bh); 805ab9bbda0SSteven Whitehouse gfs2_dinode_out(ip, bh->b_data); 806ab9bbda0SSteven Whitehouse brelse(bh); 807ab9bbda0SSteven Whitehouse } 808ab9bbda0SSteven Whitehouse 809ab9bbda0SSteven Whitehouse if (need_endtrans) 810ab9bbda0SSteven Whitehouse gfs2_trans_end(sdp); 811ab9bbda0SSteven Whitehouse out: 812ab9bbda0SSteven Whitehouse if (need_unlock) 813ab9bbda0SSteven Whitehouse gfs2_glock_dq_uninit(&gh); 814ab9bbda0SSteven Whitehouse } 815ab9bbda0SSteven Whitehouse 816ab9bbda0SSteven Whitehouse /** 8179e6e0a12SSteven Whitehouse * gfs2_make_fs_ro - Turn a Read-Write FS into a Read-Only one 8189e6e0a12SSteven Whitehouse * @sdp: the filesystem 8199e6e0a12SSteven Whitehouse * 8209e6e0a12SSteven Whitehouse * Returns: errno 8219e6e0a12SSteven Whitehouse */ 8229e6e0a12SSteven Whitehouse 8239e6e0a12SSteven Whitehouse static int gfs2_make_fs_ro(struct gfs2_sbd *sdp) 8249e6e0a12SSteven Whitehouse { 8259e6e0a12SSteven Whitehouse struct gfs2_holder t_gh; 8269e6e0a12SSteven Whitehouse int error; 8279e6e0a12SSteven Whitehouse 8288ad151c2SSteven Whitehouse kthread_stop(sdp->sd_quotad_process); 8298ad151c2SSteven Whitehouse kthread_stop(sdp->sd_logd_process); 8308ad151c2SSteven Whitehouse 831b94a170eSBenjamin Marzinski flush_workqueue(gfs2_delete_workqueue); 832ceed1723SJan Kara gfs2_quota_sync(sdp->sd_vfs, 0); 8338c42d637SSteven Whitehouse gfs2_statfs_sync(sdp->sd_vfs, 0); 8349e6e0a12SSteven Whitehouse 8359e6e0a12SSteven Whitehouse error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, GL_NOCACHE, 8369e6e0a12SSteven Whitehouse &t_gh); 8379e6e0a12SSteven Whitehouse if (error && !test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) 8389e6e0a12SSteven Whitehouse return error; 8399e6e0a12SSteven Whitehouse 8409e6e0a12SSteven Whitehouse gfs2_meta_syncfs(sdp); 8419e6e0a12SSteven Whitehouse gfs2_log_shutdown(sdp); 8429e6e0a12SSteven Whitehouse 8439e6e0a12SSteven Whitehouse clear_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); 8449e6e0a12SSteven Whitehouse 8459e6e0a12SSteven Whitehouse if (t_gh.gh_gl) 8469e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&t_gh); 8479e6e0a12SSteven Whitehouse 8489e6e0a12SSteven Whitehouse gfs2_quota_cleanup(sdp); 8499e6e0a12SSteven Whitehouse 8509e6e0a12SSteven Whitehouse return error; 8519e6e0a12SSteven Whitehouse } 8529e6e0a12SSteven Whitehouse 8539e6e0a12SSteven Whitehouse static int gfs2_umount_recovery_wait(void *word) 8549e6e0a12SSteven Whitehouse { 8559e6e0a12SSteven Whitehouse schedule(); 8569e6e0a12SSteven Whitehouse return 0; 8579e6e0a12SSteven Whitehouse } 8589e6e0a12SSteven Whitehouse 8599e6e0a12SSteven Whitehouse /** 8609e6e0a12SSteven Whitehouse * gfs2_put_super - Unmount the filesystem 8619e6e0a12SSteven Whitehouse * @sb: The VFS superblock 8629e6e0a12SSteven Whitehouse * 8639e6e0a12SSteven Whitehouse */ 8649e6e0a12SSteven Whitehouse 8659e6e0a12SSteven Whitehouse static void gfs2_put_super(struct super_block *sb) 8669e6e0a12SSteven Whitehouse { 8679e6e0a12SSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 8689e6e0a12SSteven Whitehouse int error; 8699e6e0a12SSteven Whitehouse struct gfs2_jdesc *jd; 8709e6e0a12SSteven Whitehouse 8719e6e0a12SSteven Whitehouse /* No more recovery requests */ 8729e6e0a12SSteven Whitehouse set_bit(SDF_NORECOVERY, &sdp->sd_flags); 8739e6e0a12SSteven Whitehouse smp_mb(); 8749e6e0a12SSteven Whitehouse 8759e6e0a12SSteven Whitehouse /* Wait on outstanding recovery */ 8769e6e0a12SSteven Whitehouse restart: 8779e6e0a12SSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 8789e6e0a12SSteven Whitehouse list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { 8799e6e0a12SSteven Whitehouse if (!test_bit(JDF_RECOVERY, &jd->jd_flags)) 8809e6e0a12SSteven Whitehouse continue; 8819e6e0a12SSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 8829e6e0a12SSteven Whitehouse wait_on_bit(&jd->jd_flags, JDF_RECOVERY, 8839e6e0a12SSteven Whitehouse gfs2_umount_recovery_wait, TASK_UNINTERRUPTIBLE); 8849e6e0a12SSteven Whitehouse goto restart; 8859e6e0a12SSteven Whitehouse } 8869e6e0a12SSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 8879e6e0a12SSteven Whitehouse 8889e6e0a12SSteven Whitehouse if (!(sb->s_flags & MS_RDONLY)) { 8899e6e0a12SSteven Whitehouse error = gfs2_make_fs_ro(sdp); 8909e6e0a12SSteven Whitehouse if (error) 8919e6e0a12SSteven Whitehouse gfs2_io_error(sdp); 8929e6e0a12SSteven Whitehouse } 8939e6e0a12SSteven Whitehouse /* At this point, we're through modifying the disk */ 8949e6e0a12SSteven Whitehouse 8959e6e0a12SSteven Whitehouse /* Release stuff */ 8969e6e0a12SSteven Whitehouse 8979e6e0a12SSteven Whitehouse iput(sdp->sd_jindex); 8989e6e0a12SSteven Whitehouse iput(sdp->sd_statfs_inode); 8999e6e0a12SSteven Whitehouse iput(sdp->sd_rindex); 9009e6e0a12SSteven Whitehouse iput(sdp->sd_quota_inode); 9019e6e0a12SSteven Whitehouse 9029e6e0a12SSteven Whitehouse gfs2_glock_put(sdp->sd_rename_gl); 9039e6e0a12SSteven Whitehouse gfs2_glock_put(sdp->sd_trans_gl); 9049e6e0a12SSteven Whitehouse 9059e6e0a12SSteven Whitehouse if (!sdp->sd_args.ar_spectator) { 9069e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&sdp->sd_journal_gh); 9079e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); 9089e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&sdp->sd_sc_gh); 9099e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&sdp->sd_qc_gh); 9109e6e0a12SSteven Whitehouse iput(sdp->sd_sc_inode); 9119e6e0a12SSteven Whitehouse iput(sdp->sd_qc_inode); 9129e6e0a12SSteven Whitehouse } 9139e6e0a12SSteven Whitehouse 9149e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&sdp->sd_live_gh); 9159e6e0a12SSteven Whitehouse gfs2_clear_rgrpd(sdp); 9169e6e0a12SSteven Whitehouse gfs2_jindex_free(sdp); 9179e6e0a12SSteven Whitehouse /* Take apart glock structures and buffer lists */ 9189e6e0a12SSteven Whitehouse gfs2_gl_hash_clear(sdp); 9199e6e0a12SSteven Whitehouse /* Unmount the locking protocol */ 9209e6e0a12SSteven Whitehouse gfs2_lm_unmount(sdp); 9219e6e0a12SSteven Whitehouse 9229e6e0a12SSteven Whitehouse /* At this point, we're through participating in the lockspace */ 9239e6e0a12SSteven Whitehouse gfs2_sys_fs_del(sdp); 9249e6e0a12SSteven Whitehouse } 9259e6e0a12SSteven Whitehouse 9269e6e0a12SSteven Whitehouse /** 9279e6e0a12SSteven Whitehouse * gfs2_sync_fs - sync the filesystem 9289e6e0a12SSteven Whitehouse * @sb: the superblock 9299e6e0a12SSteven Whitehouse * 9309e6e0a12SSteven Whitehouse * Flushes the log to disk. 9319e6e0a12SSteven Whitehouse */ 9329e6e0a12SSteven Whitehouse 9339e6e0a12SSteven Whitehouse static int gfs2_sync_fs(struct super_block *sb, int wait) 9349e6e0a12SSteven Whitehouse { 9351027efaaSSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 936a1177825SJan Kara 937a1177825SJan Kara gfs2_quota_sync(sb, -1); 9381027efaaSSteven Whitehouse if (wait && sdp) 9391027efaaSSteven Whitehouse gfs2_log_flush(sdp, NULL); 9409e6e0a12SSteven Whitehouse return 0; 9419e6e0a12SSteven Whitehouse } 9429e6e0a12SSteven Whitehouse 9439e6e0a12SSteven Whitehouse /** 9449e6e0a12SSteven Whitehouse * gfs2_freeze - prevent further writes to the filesystem 9459e6e0a12SSteven Whitehouse * @sb: the VFS structure for the filesystem 9469e6e0a12SSteven Whitehouse * 9479e6e0a12SSteven Whitehouse */ 9489e6e0a12SSteven Whitehouse 9499e6e0a12SSteven Whitehouse static int gfs2_freeze(struct super_block *sb) 9509e6e0a12SSteven Whitehouse { 9519e6e0a12SSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 9529e6e0a12SSteven Whitehouse int error; 9539e6e0a12SSteven Whitehouse 9549e6e0a12SSteven Whitehouse if (test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) 9559e6e0a12SSteven Whitehouse return -EINVAL; 9569e6e0a12SSteven Whitehouse 9579e6e0a12SSteven Whitehouse for (;;) { 958d564053fSSteven Whitehouse error = gfs2_lock_fs_check_clean(sdp, &sdp->sd_freeze_gh); 9599e6e0a12SSteven Whitehouse if (!error) 9609e6e0a12SSteven Whitehouse break; 9619e6e0a12SSteven Whitehouse 9629e6e0a12SSteven Whitehouse switch (error) { 9639e6e0a12SSteven Whitehouse case -EBUSY: 9649e6e0a12SSteven Whitehouse fs_err(sdp, "waiting for recovery before freeze\n"); 9659e6e0a12SSteven Whitehouse break; 9669e6e0a12SSteven Whitehouse 9679e6e0a12SSteven Whitehouse default: 9689e6e0a12SSteven Whitehouse fs_err(sdp, "error freezing FS: %d\n", error); 9699e6e0a12SSteven Whitehouse break; 9709e6e0a12SSteven Whitehouse } 9719e6e0a12SSteven Whitehouse 9729e6e0a12SSteven Whitehouse fs_err(sdp, "retrying...\n"); 9739e6e0a12SSteven Whitehouse msleep(1000); 9749e6e0a12SSteven Whitehouse } 9759e6e0a12SSteven Whitehouse return 0; 9769e6e0a12SSteven Whitehouse } 9779e6e0a12SSteven Whitehouse 9789e6e0a12SSteven Whitehouse /** 9799e6e0a12SSteven Whitehouse * gfs2_unfreeze - reallow writes to the filesystem 9809e6e0a12SSteven Whitehouse * @sb: the VFS structure for the filesystem 9819e6e0a12SSteven Whitehouse * 9829e6e0a12SSteven Whitehouse */ 9839e6e0a12SSteven Whitehouse 9849e6e0a12SSteven Whitehouse static int gfs2_unfreeze(struct super_block *sb) 9859e6e0a12SSteven Whitehouse { 986d564053fSSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 987d564053fSSteven Whitehouse 988d564053fSSteven Whitehouse gfs2_glock_dq_uninit(&sdp->sd_freeze_gh); 9899e6e0a12SSteven Whitehouse return 0; 9909e6e0a12SSteven Whitehouse } 9919e6e0a12SSteven Whitehouse 9929e6e0a12SSteven Whitehouse /** 9939e6e0a12SSteven Whitehouse * statfs_fill - fill in the sg for a given RG 9949e6e0a12SSteven Whitehouse * @rgd: the RG 9959e6e0a12SSteven Whitehouse * @sc: the sc structure 9969e6e0a12SSteven Whitehouse * 9979e6e0a12SSteven Whitehouse * Returns: 0 on success, -ESTALE if the LVB is invalid 9989e6e0a12SSteven Whitehouse */ 9999e6e0a12SSteven Whitehouse 10009e6e0a12SSteven Whitehouse static int statfs_slow_fill(struct gfs2_rgrpd *rgd, 10019e6e0a12SSteven Whitehouse struct gfs2_statfs_change_host *sc) 10029e6e0a12SSteven Whitehouse { 10039e6e0a12SSteven Whitehouse gfs2_rgrp_verify(rgd); 10049e6e0a12SSteven Whitehouse sc->sc_total += rgd->rd_data; 10059e6e0a12SSteven Whitehouse sc->sc_free += rgd->rd_free; 10069e6e0a12SSteven Whitehouse sc->sc_dinodes += rgd->rd_dinodes; 10079e6e0a12SSteven Whitehouse return 0; 10089e6e0a12SSteven Whitehouse } 10099e6e0a12SSteven Whitehouse 10109e6e0a12SSteven Whitehouse /** 10119e6e0a12SSteven Whitehouse * gfs2_statfs_slow - Stat a filesystem using asynchronous locking 10129e6e0a12SSteven Whitehouse * @sdp: the filesystem 10139e6e0a12SSteven Whitehouse * @sc: the sc info that will be returned 10149e6e0a12SSteven Whitehouse * 10159e6e0a12SSteven Whitehouse * Any error (other than a signal) will cause this routine to fall back 10169e6e0a12SSteven Whitehouse * to the synchronous version. 10179e6e0a12SSteven Whitehouse * 10189e6e0a12SSteven Whitehouse * FIXME: This really shouldn't busy wait like this. 10199e6e0a12SSteven Whitehouse * 10209e6e0a12SSteven Whitehouse * Returns: errno 10219e6e0a12SSteven Whitehouse */ 10229e6e0a12SSteven Whitehouse 10239e6e0a12SSteven Whitehouse static int gfs2_statfs_slow(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc) 10249e6e0a12SSteven Whitehouse { 10259e6e0a12SSteven Whitehouse struct gfs2_rgrpd *rgd_next; 10269e6e0a12SSteven Whitehouse struct gfs2_holder *gha, *gh; 10279e6e0a12SSteven Whitehouse unsigned int slots = 64; 10289e6e0a12SSteven Whitehouse unsigned int x; 10299e6e0a12SSteven Whitehouse int done; 10309e6e0a12SSteven Whitehouse int error = 0, err; 10319e6e0a12SSteven Whitehouse 10329e6e0a12SSteven Whitehouse memset(sc, 0, sizeof(struct gfs2_statfs_change_host)); 10339e6e0a12SSteven Whitehouse gha = kcalloc(slots, sizeof(struct gfs2_holder), GFP_KERNEL); 10349e6e0a12SSteven Whitehouse if (!gha) 10359e6e0a12SSteven Whitehouse return -ENOMEM; 10369e6e0a12SSteven Whitehouse 10379e6e0a12SSteven Whitehouse rgd_next = gfs2_rgrpd_get_first(sdp); 10389e6e0a12SSteven Whitehouse 10399e6e0a12SSteven Whitehouse for (;;) { 10409e6e0a12SSteven Whitehouse done = 1; 10419e6e0a12SSteven Whitehouse 10429e6e0a12SSteven Whitehouse for (x = 0; x < slots; x++) { 10439e6e0a12SSteven Whitehouse gh = gha + x; 10449e6e0a12SSteven Whitehouse 10459e6e0a12SSteven Whitehouse if (gh->gh_gl && gfs2_glock_poll(gh)) { 10469e6e0a12SSteven Whitehouse err = gfs2_glock_wait(gh); 10479e6e0a12SSteven Whitehouse if (err) { 10489e6e0a12SSteven Whitehouse gfs2_holder_uninit(gh); 10499e6e0a12SSteven Whitehouse error = err; 10509e6e0a12SSteven Whitehouse } else { 10519e6e0a12SSteven Whitehouse if (!error) 10529e6e0a12SSteven Whitehouse error = statfs_slow_fill( 10539e6e0a12SSteven Whitehouse gh->gh_gl->gl_object, sc); 10549e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(gh); 10559e6e0a12SSteven Whitehouse } 10569e6e0a12SSteven Whitehouse } 10579e6e0a12SSteven Whitehouse 10589e6e0a12SSteven Whitehouse if (gh->gh_gl) 10599e6e0a12SSteven Whitehouse done = 0; 10609e6e0a12SSteven Whitehouse else if (rgd_next && !error) { 10619e6e0a12SSteven Whitehouse error = gfs2_glock_nq_init(rgd_next->rd_gl, 10629e6e0a12SSteven Whitehouse LM_ST_SHARED, 10639e6e0a12SSteven Whitehouse GL_ASYNC, 10649e6e0a12SSteven Whitehouse gh); 10659e6e0a12SSteven Whitehouse rgd_next = gfs2_rgrpd_get_next(rgd_next); 10669e6e0a12SSteven Whitehouse done = 0; 10679e6e0a12SSteven Whitehouse } 10689e6e0a12SSteven Whitehouse 10699e6e0a12SSteven Whitehouse if (signal_pending(current)) 10709e6e0a12SSteven Whitehouse error = -ERESTARTSYS; 10719e6e0a12SSteven Whitehouse } 10729e6e0a12SSteven Whitehouse 10739e6e0a12SSteven Whitehouse if (done) 10749e6e0a12SSteven Whitehouse break; 10759e6e0a12SSteven Whitehouse 10769e6e0a12SSteven Whitehouse yield(); 10779e6e0a12SSteven Whitehouse } 10789e6e0a12SSteven Whitehouse 10799e6e0a12SSteven Whitehouse kfree(gha); 10809e6e0a12SSteven Whitehouse return error; 10819e6e0a12SSteven Whitehouse } 10829e6e0a12SSteven Whitehouse 10839e6e0a12SSteven Whitehouse /** 10849e6e0a12SSteven Whitehouse * gfs2_statfs_i - Do a statfs 10859e6e0a12SSteven Whitehouse * @sdp: the filesystem 10869e6e0a12SSteven Whitehouse * @sg: the sg structure 10879e6e0a12SSteven Whitehouse * 10889e6e0a12SSteven Whitehouse * Returns: errno 10899e6e0a12SSteven Whitehouse */ 10909e6e0a12SSteven Whitehouse 10919e6e0a12SSteven Whitehouse static int gfs2_statfs_i(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc) 10929e6e0a12SSteven Whitehouse { 10939e6e0a12SSteven Whitehouse struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; 10949e6e0a12SSteven Whitehouse struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; 10959e6e0a12SSteven Whitehouse 10969e6e0a12SSteven Whitehouse spin_lock(&sdp->sd_statfs_spin); 10979e6e0a12SSteven Whitehouse 10989e6e0a12SSteven Whitehouse *sc = *m_sc; 10999e6e0a12SSteven Whitehouse sc->sc_total += l_sc->sc_total; 11009e6e0a12SSteven Whitehouse sc->sc_free += l_sc->sc_free; 11019e6e0a12SSteven Whitehouse sc->sc_dinodes += l_sc->sc_dinodes; 11029e6e0a12SSteven Whitehouse 11039e6e0a12SSteven Whitehouse spin_unlock(&sdp->sd_statfs_spin); 11049e6e0a12SSteven Whitehouse 11059e6e0a12SSteven Whitehouse if (sc->sc_free < 0) 11069e6e0a12SSteven Whitehouse sc->sc_free = 0; 11079e6e0a12SSteven Whitehouse if (sc->sc_free > sc->sc_total) 11089e6e0a12SSteven Whitehouse sc->sc_free = sc->sc_total; 11099e6e0a12SSteven Whitehouse if (sc->sc_dinodes < 0) 11109e6e0a12SSteven Whitehouse sc->sc_dinodes = 0; 11119e6e0a12SSteven Whitehouse 11129e6e0a12SSteven Whitehouse return 0; 11139e6e0a12SSteven Whitehouse } 11149e6e0a12SSteven Whitehouse 11159e6e0a12SSteven Whitehouse /** 11169e6e0a12SSteven Whitehouse * gfs2_statfs - Gather and return stats about the filesystem 11179e6e0a12SSteven Whitehouse * @sb: The superblock 11189e6e0a12SSteven Whitehouse * @statfsbuf: The buffer 11199e6e0a12SSteven Whitehouse * 11209e6e0a12SSteven Whitehouse * Returns: 0 on success or error code 11219e6e0a12SSteven Whitehouse */ 11229e6e0a12SSteven Whitehouse 11239e6e0a12SSteven Whitehouse static int gfs2_statfs(struct dentry *dentry, struct kstatfs *buf) 11249e6e0a12SSteven Whitehouse { 11259e6e0a12SSteven Whitehouse struct super_block *sb = dentry->d_inode->i_sb; 11269e6e0a12SSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 11279e6e0a12SSteven Whitehouse struct gfs2_statfs_change_host sc; 11289e6e0a12SSteven Whitehouse int error; 11299e6e0a12SSteven Whitehouse 11308339ee54SSteven Whitehouse error = gfs2_rindex_update(sdp); 11318339ee54SSteven Whitehouse if (error) 11328339ee54SSteven Whitehouse return error; 11338339ee54SSteven Whitehouse 11349e6e0a12SSteven Whitehouse if (gfs2_tune_get(sdp, gt_statfs_slow)) 11359e6e0a12SSteven Whitehouse error = gfs2_statfs_slow(sdp, &sc); 11369e6e0a12SSteven Whitehouse else 11379e6e0a12SSteven Whitehouse error = gfs2_statfs_i(sdp, &sc); 11389e6e0a12SSteven Whitehouse 11399e6e0a12SSteven Whitehouse if (error) 11409e6e0a12SSteven Whitehouse return error; 11419e6e0a12SSteven Whitehouse 11429e6e0a12SSteven Whitehouse buf->f_type = GFS2_MAGIC; 11439e6e0a12SSteven Whitehouse buf->f_bsize = sdp->sd_sb.sb_bsize; 11449e6e0a12SSteven Whitehouse buf->f_blocks = sc.sc_total; 11459e6e0a12SSteven Whitehouse buf->f_bfree = sc.sc_free; 11469e6e0a12SSteven Whitehouse buf->f_bavail = sc.sc_free; 11479e6e0a12SSteven Whitehouse buf->f_files = sc.sc_dinodes + sc.sc_free; 11489e6e0a12SSteven Whitehouse buf->f_ffree = sc.sc_free; 11499e6e0a12SSteven Whitehouse buf->f_namelen = GFS2_FNAMESIZE; 11509e6e0a12SSteven Whitehouse 11519e6e0a12SSteven Whitehouse return 0; 11529e6e0a12SSteven Whitehouse } 11539e6e0a12SSteven Whitehouse 11549e6e0a12SSteven Whitehouse /** 11559e6e0a12SSteven Whitehouse * gfs2_remount_fs - called when the FS is remounted 11569e6e0a12SSteven Whitehouse * @sb: the filesystem 11579e6e0a12SSteven Whitehouse * @flags: the remount flags 11589e6e0a12SSteven Whitehouse * @data: extra data passed in (not used right now) 11599e6e0a12SSteven Whitehouse * 11609e6e0a12SSteven Whitehouse * Returns: errno 11619e6e0a12SSteven Whitehouse */ 11629e6e0a12SSteven Whitehouse 11639e6e0a12SSteven Whitehouse static int gfs2_remount_fs(struct super_block *sb, int *flags, char *data) 11649e6e0a12SSteven Whitehouse { 11659e6e0a12SSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 11669e6e0a12SSteven Whitehouse struct gfs2_args args = sdp->sd_args; /* Default to current settings */ 11679e6e0a12SSteven Whitehouse struct gfs2_tune *gt = &sdp->sd_tune; 11689e6e0a12SSteven Whitehouse int error; 11699e6e0a12SSteven Whitehouse 11709e6e0a12SSteven Whitehouse spin_lock(>->gt_spin); 11715e687eacSBenjamin Marzinski args.ar_commit = gt->gt_logd_secs; 11723d3c10f2SBenjamin Marzinski args.ar_quota_quantum = gt->gt_quota_quantum; 11733d3c10f2SBenjamin Marzinski if (gt->gt_statfs_slow) 11743d3c10f2SBenjamin Marzinski args.ar_statfs_quantum = 0; 11753d3c10f2SBenjamin Marzinski else 11763d3c10f2SBenjamin Marzinski args.ar_statfs_quantum = gt->gt_statfs_quantum; 11779e6e0a12SSteven Whitehouse spin_unlock(>->gt_spin); 1178f55073ffSSteven Whitehouse error = gfs2_mount_args(&args, data); 11799e6e0a12SSteven Whitehouse if (error) 11809e6e0a12SSteven Whitehouse return error; 11819e6e0a12SSteven Whitehouse 11829e6e0a12SSteven Whitehouse /* Not allowed to change locking details */ 11839e6e0a12SSteven Whitehouse if (strcmp(args.ar_lockproto, sdp->sd_args.ar_lockproto) || 11849e6e0a12SSteven Whitehouse strcmp(args.ar_locktable, sdp->sd_args.ar_locktable) || 11859e6e0a12SSteven Whitehouse strcmp(args.ar_hostdata, sdp->sd_args.ar_hostdata)) 11869e6e0a12SSteven Whitehouse return -EINVAL; 11879e6e0a12SSteven Whitehouse 11889e6e0a12SSteven Whitehouse /* Some flags must not be changed */ 11899e6e0a12SSteven Whitehouse if (args_neq(&args, &sdp->sd_args, spectator) || 11909e6e0a12SSteven Whitehouse args_neq(&args, &sdp->sd_args, localflocks) || 11919e6e0a12SSteven Whitehouse args_neq(&args, &sdp->sd_args, meta)) 11929e6e0a12SSteven Whitehouse return -EINVAL; 11939e6e0a12SSteven Whitehouse 11949e6e0a12SSteven Whitehouse if (sdp->sd_args.ar_spectator) 11959e6e0a12SSteven Whitehouse *flags |= MS_RDONLY; 11969e6e0a12SSteven Whitehouse 11979e6e0a12SSteven Whitehouse if ((sb->s_flags ^ *flags) & MS_RDONLY) { 11989e6e0a12SSteven Whitehouse if (*flags & MS_RDONLY) 11999e6e0a12SSteven Whitehouse error = gfs2_make_fs_ro(sdp); 12009e6e0a12SSteven Whitehouse else 12019e6e0a12SSteven Whitehouse error = gfs2_make_fs_rw(sdp); 12029e6e0a12SSteven Whitehouse if (error) 12039e6e0a12SSteven Whitehouse return error; 12049e6e0a12SSteven Whitehouse } 12059e6e0a12SSteven Whitehouse 12069e6e0a12SSteven Whitehouse sdp->sd_args = args; 12079e6e0a12SSteven Whitehouse if (sdp->sd_args.ar_posix_acl) 12089e6e0a12SSteven Whitehouse sb->s_flags |= MS_POSIXACL; 12099e6e0a12SSteven Whitehouse else 12109e6e0a12SSteven Whitehouse sb->s_flags &= ~MS_POSIXACL; 1211f25934c5SChristoph Hellwig if (sdp->sd_args.ar_nobarrier) 1212f25934c5SChristoph Hellwig set_bit(SDF_NOBARRIERS, &sdp->sd_flags); 1213f25934c5SChristoph Hellwig else 1214f25934c5SChristoph Hellwig clear_bit(SDF_NOBARRIERS, &sdp->sd_flags); 12159e6e0a12SSteven Whitehouse spin_lock(>->gt_spin); 12165e687eacSBenjamin Marzinski gt->gt_logd_secs = args.ar_commit; 12173d3c10f2SBenjamin Marzinski gt->gt_quota_quantum = args.ar_quota_quantum; 12183d3c10f2SBenjamin Marzinski if (args.ar_statfs_quantum) { 12193d3c10f2SBenjamin Marzinski gt->gt_statfs_slow = 0; 12203d3c10f2SBenjamin Marzinski gt->gt_statfs_quantum = args.ar_statfs_quantum; 12213d3c10f2SBenjamin Marzinski } 12223d3c10f2SBenjamin Marzinski else { 12233d3c10f2SBenjamin Marzinski gt->gt_statfs_slow = 1; 12243d3c10f2SBenjamin Marzinski gt->gt_statfs_quantum = 30; 12253d3c10f2SBenjamin Marzinski } 12269e6e0a12SSteven Whitehouse spin_unlock(>->gt_spin); 12279e6e0a12SSteven Whitehouse 12288633ecfaSSteven Whitehouse gfs2_online_uevent(sdp); 12299e6e0a12SSteven Whitehouse return 0; 12309e6e0a12SSteven Whitehouse } 12319e6e0a12SSteven Whitehouse 12329e6e0a12SSteven Whitehouse /** 12339e6e0a12SSteven Whitehouse * gfs2_drop_inode - Drop an inode (test for remote unlink) 12349e6e0a12SSteven Whitehouse * @inode: The inode to drop 12359e6e0a12SSteven Whitehouse * 12369e6e0a12SSteven Whitehouse * If we've received a callback on an iopen lock then its because a 12379e6e0a12SSteven Whitehouse * remote node tried to deallocate the inode but failed due to this node 12389e6e0a12SSteven Whitehouse * still having the inode open. Here we mark the link count zero 12399e6e0a12SSteven Whitehouse * since we know that it must have reached zero if the GLF_DEMOTE flag 12409e6e0a12SSteven Whitehouse * is set on the iopen glock. If we didn't do a disk read since the 12419e6e0a12SSteven Whitehouse * remote node removed the final link then we might otherwise miss 12429e6e0a12SSteven Whitehouse * this event. This check ensures that this node will deallocate the 12439e6e0a12SSteven Whitehouse * inode's blocks, or alternatively pass the baton on to another 12449e6e0a12SSteven Whitehouse * node for later deallocation. 12459e6e0a12SSteven Whitehouse */ 12469e6e0a12SSteven Whitehouse 124745321ac5SAl Viro static int gfs2_drop_inode(struct inode *inode) 12489e6e0a12SSteven Whitehouse { 12499e6e0a12SSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 12509e6e0a12SSteven Whitehouse 1251009d8518SSteven Whitehouse if (inode->i_nlink) { 12529e6e0a12SSteven Whitehouse struct gfs2_glock *gl = ip->i_iopen_gh.gh_gl; 12539e6e0a12SSteven Whitehouse if (gl && test_bit(GLF_DEMOTE, &gl->gl_flags)) 12549e6e0a12SSteven Whitehouse clear_nlink(inode); 12559e6e0a12SSteven Whitehouse } 125645321ac5SAl Viro return generic_drop_inode(inode); 12579e6e0a12SSteven Whitehouse } 12589e6e0a12SSteven Whitehouse 12599e6e0a12SSteven Whitehouse static int is_ancestor(const struct dentry *d1, const struct dentry *d2) 12609e6e0a12SSteven Whitehouse { 12619e6e0a12SSteven Whitehouse do { 12629e6e0a12SSteven Whitehouse if (d1 == d2) 12639e6e0a12SSteven Whitehouse return 1; 12649e6e0a12SSteven Whitehouse d1 = d1->d_parent; 12659e6e0a12SSteven Whitehouse } while (!IS_ROOT(d1)); 12669e6e0a12SSteven Whitehouse return 0; 12679e6e0a12SSteven Whitehouse } 12689e6e0a12SSteven Whitehouse 12699e6e0a12SSteven Whitehouse /** 12709e6e0a12SSteven Whitehouse * gfs2_show_options - Show mount options for /proc/mounts 12719e6e0a12SSteven Whitehouse * @s: seq_file structure 127234c80b1dSAl Viro * @root: root of this (sub)tree 12739e6e0a12SSteven Whitehouse * 12749e6e0a12SSteven Whitehouse * Returns: 0 on success or error code 12759e6e0a12SSteven Whitehouse */ 12769e6e0a12SSteven Whitehouse 127734c80b1dSAl Viro static int gfs2_show_options(struct seq_file *s, struct dentry *root) 12789e6e0a12SSteven Whitehouse { 127934c80b1dSAl Viro struct gfs2_sbd *sdp = root->d_sb->s_fs_info; 12809e6e0a12SSteven Whitehouse struct gfs2_args *args = &sdp->sd_args; 12813d3c10f2SBenjamin Marzinski int val; 12829e6e0a12SSteven Whitehouse 128334c80b1dSAl Viro if (is_ancestor(root, sdp->sd_master_dir)) 12849e6e0a12SSteven Whitehouse seq_printf(s, ",meta"); 12859e6e0a12SSteven Whitehouse if (args->ar_lockproto[0]) 12869e6e0a12SSteven Whitehouse seq_printf(s, ",lockproto=%s", args->ar_lockproto); 12879e6e0a12SSteven Whitehouse if (args->ar_locktable[0]) 12889e6e0a12SSteven Whitehouse seq_printf(s, ",locktable=%s", args->ar_locktable); 12899e6e0a12SSteven Whitehouse if (args->ar_hostdata[0]) 12909e6e0a12SSteven Whitehouse seq_printf(s, ",hostdata=%s", args->ar_hostdata); 12919e6e0a12SSteven Whitehouse if (args->ar_spectator) 12929e6e0a12SSteven Whitehouse seq_printf(s, ",spectator"); 12939e6e0a12SSteven Whitehouse if (args->ar_localflocks) 12949e6e0a12SSteven Whitehouse seq_printf(s, ",localflocks"); 12959e6e0a12SSteven Whitehouse if (args->ar_debug) 12969e6e0a12SSteven Whitehouse seq_printf(s, ",debug"); 12979e6e0a12SSteven Whitehouse if (args->ar_posix_acl) 12989e6e0a12SSteven Whitehouse seq_printf(s, ",acl"); 12999e6e0a12SSteven Whitehouse if (args->ar_quota != GFS2_QUOTA_DEFAULT) { 13009e6e0a12SSteven Whitehouse char *state; 13019e6e0a12SSteven Whitehouse switch (args->ar_quota) { 13029e6e0a12SSteven Whitehouse case GFS2_QUOTA_OFF: 13039e6e0a12SSteven Whitehouse state = "off"; 13049e6e0a12SSteven Whitehouse break; 13059e6e0a12SSteven Whitehouse case GFS2_QUOTA_ACCOUNT: 13069e6e0a12SSteven Whitehouse state = "account"; 13079e6e0a12SSteven Whitehouse break; 13089e6e0a12SSteven Whitehouse case GFS2_QUOTA_ON: 13099e6e0a12SSteven Whitehouse state = "on"; 13109e6e0a12SSteven Whitehouse break; 13119e6e0a12SSteven Whitehouse default: 13129e6e0a12SSteven Whitehouse state = "unknown"; 13139e6e0a12SSteven Whitehouse break; 13149e6e0a12SSteven Whitehouse } 13159e6e0a12SSteven Whitehouse seq_printf(s, ",quota=%s", state); 13169e6e0a12SSteven Whitehouse } 13179e6e0a12SSteven Whitehouse if (args->ar_suiddir) 13189e6e0a12SSteven Whitehouse seq_printf(s, ",suiddir"); 13199e6e0a12SSteven Whitehouse if (args->ar_data != GFS2_DATA_DEFAULT) { 13209e6e0a12SSteven Whitehouse char *state; 13219e6e0a12SSteven Whitehouse switch (args->ar_data) { 13229e6e0a12SSteven Whitehouse case GFS2_DATA_WRITEBACK: 13239e6e0a12SSteven Whitehouse state = "writeback"; 13249e6e0a12SSteven Whitehouse break; 13259e6e0a12SSteven Whitehouse case GFS2_DATA_ORDERED: 13269e6e0a12SSteven Whitehouse state = "ordered"; 13279e6e0a12SSteven Whitehouse break; 13289e6e0a12SSteven Whitehouse default: 13299e6e0a12SSteven Whitehouse state = "unknown"; 13309e6e0a12SSteven Whitehouse break; 13319e6e0a12SSteven Whitehouse } 13329e6e0a12SSteven Whitehouse seq_printf(s, ",data=%s", state); 13339e6e0a12SSteven Whitehouse } 13349e6e0a12SSteven Whitehouse if (args->ar_discard) 13359e6e0a12SSteven Whitehouse seq_printf(s, ",discard"); 13365e687eacSBenjamin Marzinski val = sdp->sd_tune.gt_logd_secs; 13375e687eacSBenjamin Marzinski if (val != 30) 13383d3c10f2SBenjamin Marzinski seq_printf(s, ",commit=%d", val); 13393d3c10f2SBenjamin Marzinski val = sdp->sd_tune.gt_statfs_quantum; 13403d3c10f2SBenjamin Marzinski if (val != 30) 13413d3c10f2SBenjamin Marzinski seq_printf(s, ",statfs_quantum=%d", val); 13422b9731e8SSteven Whitehouse else if (sdp->sd_tune.gt_statfs_slow) 13432b9731e8SSteven Whitehouse seq_puts(s, ",statfs_quantum=0"); 13443d3c10f2SBenjamin Marzinski val = sdp->sd_tune.gt_quota_quantum; 13453d3c10f2SBenjamin Marzinski if (val != 60) 13463d3c10f2SBenjamin Marzinski seq_printf(s, ",quota_quantum=%d", val); 13473d3c10f2SBenjamin Marzinski if (args->ar_statfs_percent) 13483d3c10f2SBenjamin Marzinski seq_printf(s, ",statfs_percent=%d", args->ar_statfs_percent); 1349d34843d0SBob Peterson if (args->ar_errors != GFS2_ERRORS_DEFAULT) { 1350d34843d0SBob Peterson const char *state; 1351d34843d0SBob Peterson 1352d34843d0SBob Peterson switch (args->ar_errors) { 1353d34843d0SBob Peterson case GFS2_ERRORS_WITHDRAW: 1354d34843d0SBob Peterson state = "withdraw"; 1355d34843d0SBob Peterson break; 1356d34843d0SBob Peterson case GFS2_ERRORS_PANIC: 1357d34843d0SBob Peterson state = "panic"; 1358d34843d0SBob Peterson break; 1359d34843d0SBob Peterson default: 1360d34843d0SBob Peterson state = "unknown"; 1361d34843d0SBob Peterson break; 1362d34843d0SBob Peterson } 1363d34843d0SBob Peterson seq_printf(s, ",errors=%s", state); 1364d34843d0SBob Peterson } 1365cdcfde62SSteven Whitehouse if (test_bit(SDF_NOBARRIERS, &sdp->sd_flags)) 1366cdcfde62SSteven Whitehouse seq_printf(s, ",nobarrier"); 1367913a71d2SSteven Whitehouse if (test_bit(SDF_DEMOTE, &sdp->sd_flags)) 1368913a71d2SSteven Whitehouse seq_printf(s, ",demote_interface_used"); 136990306c41SBenjamin Marzinski if (args->ar_rgrplvb) 137090306c41SBenjamin Marzinski seq_printf(s, ",rgrplvb"); 13719e6e0a12SSteven Whitehouse return 0; 13729e6e0a12SSteven Whitehouse } 13739e6e0a12SSteven Whitehouse 1374f42ab085SSteven Whitehouse static void gfs2_final_release_pages(struct gfs2_inode *ip) 1375f42ab085SSteven Whitehouse { 1376f42ab085SSteven Whitehouse struct inode *inode = &ip->i_inode; 1377f42ab085SSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 1378f42ab085SSteven Whitehouse 1379f42ab085SSteven Whitehouse truncate_inode_pages(gfs2_glock2aspace(ip->i_gl), 0); 1380f42ab085SSteven Whitehouse truncate_inode_pages(&inode->i_data, 0); 1381f42ab085SSteven Whitehouse 1382f42ab085SSteven Whitehouse if (atomic_read(&gl->gl_revokes) == 0) { 1383f42ab085SSteven Whitehouse clear_bit(GLF_LFLUSH, &gl->gl_flags); 1384f42ab085SSteven Whitehouse clear_bit(GLF_DIRTY, &gl->gl_flags); 1385f42ab085SSteven Whitehouse } 1386f42ab085SSteven Whitehouse } 1387f42ab085SSteven Whitehouse 1388f42ab085SSteven Whitehouse static int gfs2_dinode_dealloc(struct gfs2_inode *ip) 1389f42ab085SSteven Whitehouse { 1390f42ab085SSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); 1391f42ab085SSteven Whitehouse struct gfs2_rgrpd *rgd; 1392564e12b1SBob Peterson struct gfs2_holder gh; 1393f42ab085SSteven Whitehouse int error; 1394f42ab085SSteven Whitehouse 1395f42ab085SSteven Whitehouse if (gfs2_get_inode_blocks(&ip->i_inode) != 1) { 139694fb763bSSteven Whitehouse gfs2_consist_inode(ip); 1397f42ab085SSteven Whitehouse return -EIO; 1398f42ab085SSteven Whitehouse } 1399f42ab085SSteven Whitehouse 14008e2e0047SBob Peterson error = gfs2_rindex_update(sdp); 14018e2e0047SBob Peterson if (error) 14028e2e0047SBob Peterson return error; 1403f42ab085SSteven Whitehouse 1404f4108a60SEric W. Biederman error = gfs2_quota_hold(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE); 1405f42ab085SSteven Whitehouse if (error) 14065407e242SBob Peterson return error; 1407f42ab085SSteven Whitehouse 140866fc061bSSteven Whitehouse rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr, 1); 1409f42ab085SSteven Whitehouse if (!rgd) { 1410f42ab085SSteven Whitehouse gfs2_consist_inode(ip); 1411f42ab085SSteven Whitehouse error = -EIO; 14128339ee54SSteven Whitehouse goto out_qs; 1413f42ab085SSteven Whitehouse } 1414f42ab085SSteven Whitehouse 1415564e12b1SBob Peterson error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, &gh); 1416f42ab085SSteven Whitehouse if (error) 14178339ee54SSteven Whitehouse goto out_qs; 1418f42ab085SSteven Whitehouse 14194667a0ecSSteven Whitehouse error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_STATFS + RES_QUOTA, 14204667a0ecSSteven Whitehouse sdp->sd_jdesc->jd_blocks); 1421f42ab085SSteven Whitehouse if (error) 1422f42ab085SSteven Whitehouse goto out_rg_gunlock; 1423f42ab085SSteven Whitehouse 1424f42ab085SSteven Whitehouse gfs2_free_di(rgd, ip); 1425f42ab085SSteven Whitehouse 1426f42ab085SSteven Whitehouse gfs2_final_release_pages(ip); 1427f42ab085SSteven Whitehouse 1428f42ab085SSteven Whitehouse gfs2_trans_end(sdp); 1429f42ab085SSteven Whitehouse 1430f42ab085SSteven Whitehouse out_rg_gunlock: 1431564e12b1SBob Peterson gfs2_glock_dq_uninit(&gh); 1432f42ab085SSteven Whitehouse out_qs: 1433f42ab085SSteven Whitehouse gfs2_quota_unhold(ip); 1434f42ab085SSteven Whitehouse return error; 1435f42ab085SSteven Whitehouse } 1436f42ab085SSteven Whitehouse 1437380f7c65SSteven Whitehouse /** 1438380f7c65SSteven Whitehouse * gfs2_evict_inode - Remove an inode from cache 1439380f7c65SSteven Whitehouse * @inode: The inode to evict 1440380f7c65SSteven Whitehouse * 1441380f7c65SSteven Whitehouse * There are three cases to consider: 1442380f7c65SSteven Whitehouse * 1. i_nlink == 0, we are final opener (and must deallocate) 1443380f7c65SSteven Whitehouse * 2. i_nlink == 0, we are not the final opener (and cannot deallocate) 1444380f7c65SSteven Whitehouse * 3. i_nlink > 0 1445380f7c65SSteven Whitehouse * 1446380f7c65SSteven Whitehouse * If the fs is read only, then we have to treat all cases as per #3 1447380f7c65SSteven Whitehouse * since we are unable to do any deallocation. The inode will be 1448380f7c65SSteven Whitehouse * deallocated by the next read/write node to attempt an allocation 1449380f7c65SSteven Whitehouse * in the same resource group 1450380f7c65SSteven Whitehouse * 14519e6e0a12SSteven Whitehouse * We have to (at the moment) hold the inodes main lock to cover 14529e6e0a12SSteven Whitehouse * the gap between unlocking the shared lock on the iopen lock and 14539e6e0a12SSteven Whitehouse * taking the exclusive lock. I'd rather do a shared -> exclusive 14549e6e0a12SSteven Whitehouse * conversion on the iopen lock, but we can change that later. This 14559e6e0a12SSteven Whitehouse * is safe, just less efficient. 14569e6e0a12SSteven Whitehouse */ 14579e6e0a12SSteven Whitehouse 1458d5c1515cSAl Viro static void gfs2_evict_inode(struct inode *inode) 14599e6e0a12SSteven Whitehouse { 1460001e8e8dSSteven Whitehouse struct super_block *sb = inode->i_sb; 1461001e8e8dSSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 14629e6e0a12SSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 14639e6e0a12SSteven Whitehouse struct gfs2_holder gh; 14649e6e0a12SSteven Whitehouse int error; 14659e6e0a12SSteven Whitehouse 1466001e8e8dSSteven Whitehouse if (inode->i_nlink || (sb->s_flags & MS_RDONLY)) 1467d5c1515cSAl Viro goto out; 1468d5c1515cSAl Viro 146944ad37d6SBob Peterson /* Must not read inode block until block type has been verified */ 147044ad37d6SBob Peterson error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_SKIP, &gh); 14719e6e0a12SSteven Whitehouse if (unlikely(error)) { 1472a6a4d98bSBob Peterson ip->i_iopen_gh.gh_flags |= GL_NOCACHE; 14739e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&ip->i_iopen_gh); 14749e6e0a12SSteven Whitehouse goto out; 14759e6e0a12SSteven Whitehouse } 14769e6e0a12SSteven Whitehouse 147740ac218fSSteven Whitehouse if (!test_bit(GIF_ALLOC_FAILED, &ip->i_flags)) { 1478acf7e244SSteven Whitehouse error = gfs2_check_blk_type(sdp, ip->i_no_addr, GFS2_BLKST_UNLINKED); 1479acf7e244SSteven Whitehouse if (error) 1480acf7e244SSteven Whitehouse goto out_truncate; 148140ac218fSSteven Whitehouse } 1482acf7e244SSteven Whitehouse 148344ad37d6SBob Peterson if (test_bit(GIF_INVALID, &ip->i_flags)) { 148444ad37d6SBob Peterson error = gfs2_inode_refresh(ip); 148544ad37d6SBob Peterson if (error) 148644ad37d6SBob Peterson goto out_truncate; 148744ad37d6SBob Peterson } 148844ad37d6SBob Peterson 148923c30108SBenjamin Marzinski ip->i_iopen_gh.gh_flags |= GL_NOCACHE; 14909e6e0a12SSteven Whitehouse gfs2_glock_dq_wait(&ip->i_iopen_gh); 14919e6e0a12SSteven Whitehouse gfs2_holder_reinit(LM_ST_EXCLUSIVE, LM_FLAG_TRY_1CB | GL_NOCACHE, &ip->i_iopen_gh); 14929e6e0a12SSteven Whitehouse error = gfs2_glock_nq(&ip->i_iopen_gh); 14939e6e0a12SSteven Whitehouse if (error) 14949e6e0a12SSteven Whitehouse goto out_truncate; 14959e6e0a12SSteven Whitehouse 1496380f7c65SSteven Whitehouse /* Case 1 starts here */ 1497380f7c65SSteven Whitehouse 14989e6e0a12SSteven Whitehouse if (S_ISDIR(inode->i_mode) && 14999e6e0a12SSteven Whitehouse (ip->i_diskflags & GFS2_DIF_EXHASH)) { 15009e6e0a12SSteven Whitehouse error = gfs2_dir_exhash_dealloc(ip); 15019e6e0a12SSteven Whitehouse if (error) 15029e6e0a12SSteven Whitehouse goto out_unlock; 15039e6e0a12SSteven Whitehouse } 15049e6e0a12SSteven Whitehouse 15059e6e0a12SSteven Whitehouse if (ip->i_eattr) { 15069e6e0a12SSteven Whitehouse error = gfs2_ea_dealloc(ip); 15079e6e0a12SSteven Whitehouse if (error) 15089e6e0a12SSteven Whitehouse goto out_unlock; 15099e6e0a12SSteven Whitehouse } 15109e6e0a12SSteven Whitehouse 15119e6e0a12SSteven Whitehouse if (!gfs2_is_stuffed(ip)) { 15129e6e0a12SSteven Whitehouse error = gfs2_file_dealloc(ip); 15139e6e0a12SSteven Whitehouse if (error) 15149e6e0a12SSteven Whitehouse goto out_unlock; 15159e6e0a12SSteven Whitehouse } 15169e6e0a12SSteven Whitehouse 15179e6e0a12SSteven Whitehouse error = gfs2_dinode_dealloc(ip); 15189e6e0a12SSteven Whitehouse goto out_unlock; 15199e6e0a12SSteven Whitehouse 15209e6e0a12SSteven Whitehouse out_truncate: 152140ac218fSSteven Whitehouse gfs2_log_flush(sdp, ip->i_gl); 15222216db70SBenjamin Marzinski if (test_bit(GLF_DIRTY, &ip->i_gl->gl_flags)) { 15232216db70SBenjamin Marzinski struct address_space *metamapping = gfs2_glock2aspace(ip->i_gl); 15242216db70SBenjamin Marzinski filemap_fdatawrite(metamapping); 15252216db70SBenjamin Marzinski filemap_fdatawait(metamapping); 15262216db70SBenjamin Marzinski } 152740ac218fSSteven Whitehouse write_inode_now(inode, 1); 1528b5b24d7aSSteven Whitehouse gfs2_ail_flush(ip->i_gl, 0); 152940ac218fSSteven Whitehouse 1530380f7c65SSteven Whitehouse /* Case 2 starts here */ 15319e6e0a12SSteven Whitehouse error = gfs2_trans_begin(sdp, 0, sdp->sd_jdesc->jd_blocks); 15329e6e0a12SSteven Whitehouse if (error) 15339e6e0a12SSteven Whitehouse goto out_unlock; 1534380f7c65SSteven Whitehouse /* Needs to be done before glock release & also in a transaction */ 1535380f7c65SSteven Whitehouse truncate_inode_pages(&inode->i_data, 0); 15369e6e0a12SSteven Whitehouse gfs2_trans_end(sdp); 15379e6e0a12SSteven Whitehouse 15389e6e0a12SSteven Whitehouse out_unlock: 1539380f7c65SSteven Whitehouse /* Error path for case 1 */ 15408e2e0047SBob Peterson if (gfs2_rs_active(ip->i_res)) 154120095218SBob Peterson gfs2_rs_deltree(ip->i_res); 15428e2e0047SBob Peterson 1543a6a4d98bSBob Peterson if (test_bit(HIF_HOLDER, &ip->i_iopen_gh.gh_iflags)) { 1544a6a4d98bSBob Peterson ip->i_iopen_gh.gh_flags |= GL_NOCACHE; 15459e6e0a12SSteven Whitehouse gfs2_glock_dq(&ip->i_iopen_gh); 1546a6a4d98bSBob Peterson } 15479e6e0a12SSteven Whitehouse gfs2_holder_uninit(&ip->i_iopen_gh); 15489e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&gh); 15499e6e0a12SSteven Whitehouse if (error && error != GLR_TRYFAILED && error != -EROFS) 1550d5c1515cSAl Viro fs_warn(sdp, "gfs2_evict_inode: %d\n", error); 15519e6e0a12SSteven Whitehouse out: 1552380f7c65SSteven Whitehouse /* Case 3 starts here */ 15539e6e0a12SSteven Whitehouse truncate_inode_pages(&inode->i_data, 0); 1554af5c2697SSteven Whitehouse gfs2_rs_delete(ip, NULL); 155545138990SSteven Whitehouse gfs2_ordered_del_inode(ip); 1556dbd5768fSJan Kara clear_inode(inode); 155717d539f0SSteven Whitehouse gfs2_dir_hash_inval(ip); 1558d5c1515cSAl Viro ip->i_gl->gl_object = NULL; 155943829731STejun Heo flush_delayed_work(&ip->i_gl->gl_work); 156029687a2aSSteven Whitehouse gfs2_glock_add_to_lru(ip->i_gl); 1561d5c1515cSAl Viro gfs2_glock_put(ip->i_gl); 1562d5c1515cSAl Viro ip->i_gl = NULL; 1563d5c1515cSAl Viro if (ip->i_iopen_gh.gh_gl) { 1564d5c1515cSAl Viro ip->i_iopen_gh.gh_gl->gl_object = NULL; 1565a6a4d98bSBob Peterson ip->i_iopen_gh.gh_flags |= GL_NOCACHE; 1566d5c1515cSAl Viro gfs2_glock_dq_uninit(&ip->i_iopen_gh); 1567d5c1515cSAl Viro } 15689e6e0a12SSteven Whitehouse } 15699e6e0a12SSteven Whitehouse 15709e6e0a12SSteven Whitehouse static struct inode *gfs2_alloc_inode(struct super_block *sb) 15719e6e0a12SSteven Whitehouse { 15729e6e0a12SSteven Whitehouse struct gfs2_inode *ip; 15739e6e0a12SSteven Whitehouse 15749e6e0a12SSteven Whitehouse ip = kmem_cache_alloc(gfs2_inode_cachep, GFP_KERNEL); 15759e6e0a12SSteven Whitehouse if (ip) { 15769e6e0a12SSteven Whitehouse ip->i_flags = 0; 15779e6e0a12SSteven Whitehouse ip->i_gl = NULL; 157854335b1fSSteven Whitehouse ip->i_rgd = NULL; 15790a305e49SBob Peterson ip->i_res = NULL; 15809e6e0a12SSteven Whitehouse } 15819e6e0a12SSteven Whitehouse return &ip->i_inode; 15829e6e0a12SSteven Whitehouse } 15839e6e0a12SSteven Whitehouse 1584fa0d7e3dSNick Piggin static void gfs2_i_callback(struct rcu_head *head) 1585fa0d7e3dSNick Piggin { 1586fa0d7e3dSNick Piggin struct inode *inode = container_of(head, struct inode, i_rcu); 1587fa0d7e3dSNick Piggin kmem_cache_free(gfs2_inode_cachep, inode); 1588fa0d7e3dSNick Piggin } 1589fa0d7e3dSNick Piggin 15909e6e0a12SSteven Whitehouse static void gfs2_destroy_inode(struct inode *inode) 15919e6e0a12SSteven Whitehouse { 1592fa0d7e3dSNick Piggin call_rcu(&inode->i_rcu, gfs2_i_callback); 15939e6e0a12SSteven Whitehouse } 15949e6e0a12SSteven Whitehouse 15959e6e0a12SSteven Whitehouse const struct super_operations gfs2_super_ops = { 15969e6e0a12SSteven Whitehouse .alloc_inode = gfs2_alloc_inode, 15979e6e0a12SSteven Whitehouse .destroy_inode = gfs2_destroy_inode, 15989e6e0a12SSteven Whitehouse .write_inode = gfs2_write_inode, 1599ab9bbda0SSteven Whitehouse .dirty_inode = gfs2_dirty_inode, 1600d5c1515cSAl Viro .evict_inode = gfs2_evict_inode, 16019e6e0a12SSteven Whitehouse .put_super = gfs2_put_super, 16029e6e0a12SSteven Whitehouse .sync_fs = gfs2_sync_fs, 16039e6e0a12SSteven Whitehouse .freeze_fs = gfs2_freeze, 16049e6e0a12SSteven Whitehouse .unfreeze_fs = gfs2_unfreeze, 16059e6e0a12SSteven Whitehouse .statfs = gfs2_statfs, 16069e6e0a12SSteven Whitehouse .remount_fs = gfs2_remount_fs, 16079e6e0a12SSteven Whitehouse .drop_inode = gfs2_drop_inode, 16089e6e0a12SSteven Whitehouse .show_options = gfs2_show_options, 16099e6e0a12SSteven Whitehouse }; 16109e6e0a12SSteven Whitehouse 1611