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, 819e6e0a12SSteven Whitehouse Opt_error, 829e6e0a12SSteven Whitehouse }; 839e6e0a12SSteven Whitehouse 849e6e0a12SSteven Whitehouse static const match_table_t tokens = { 859e6e0a12SSteven Whitehouse {Opt_lockproto, "lockproto=%s"}, 869e6e0a12SSteven Whitehouse {Opt_locktable, "locktable=%s"}, 879e6e0a12SSteven Whitehouse {Opt_hostdata, "hostdata=%s"}, 889e6e0a12SSteven Whitehouse {Opt_spectator, "spectator"}, 8943f74c19SSteven Whitehouse {Opt_spectator, "norecovery"}, 909e6e0a12SSteven Whitehouse {Opt_ignore_local_fs, "ignore_local_fs"}, 919e6e0a12SSteven Whitehouse {Opt_localflocks, "localflocks"}, 929e6e0a12SSteven Whitehouse {Opt_localcaching, "localcaching"}, 939e6e0a12SSteven Whitehouse {Opt_debug, "debug"}, 949e6e0a12SSteven Whitehouse {Opt_nodebug, "nodebug"}, 959e6e0a12SSteven Whitehouse {Opt_upgrade, "upgrade"}, 969e6e0a12SSteven Whitehouse {Opt_acl, "acl"}, 979e6e0a12SSteven Whitehouse {Opt_noacl, "noacl"}, 989e6e0a12SSteven Whitehouse {Opt_quota_off, "quota=off"}, 999e6e0a12SSteven Whitehouse {Opt_quota_account, "quota=account"}, 1009e6e0a12SSteven Whitehouse {Opt_quota_on, "quota=on"}, 1019e6e0a12SSteven Whitehouse {Opt_quota, "quota"}, 1029e6e0a12SSteven Whitehouse {Opt_noquota, "noquota"}, 1039e6e0a12SSteven Whitehouse {Opt_suiddir, "suiddir"}, 1049e6e0a12SSteven Whitehouse {Opt_nosuiddir, "nosuiddir"}, 1059e6e0a12SSteven Whitehouse {Opt_data_writeback, "data=writeback"}, 1069e6e0a12SSteven Whitehouse {Opt_data_ordered, "data=ordered"}, 1079e6e0a12SSteven Whitehouse {Opt_meta, "meta"}, 1089e6e0a12SSteven Whitehouse {Opt_discard, "discard"}, 1099e6e0a12SSteven Whitehouse {Opt_nodiscard, "nodiscard"}, 1109e6e0a12SSteven Whitehouse {Opt_commit, "commit=%d"}, 111d34843d0SBob Peterson {Opt_err_withdraw, "errors=withdraw"}, 112d34843d0SBob Peterson {Opt_err_panic, "errors=panic"}, 1133d3c10f2SBenjamin Marzinski {Opt_statfs_quantum, "statfs_quantum=%d"}, 1143d3c10f2SBenjamin Marzinski {Opt_statfs_percent, "statfs_percent=%d"}, 1153d3c10f2SBenjamin Marzinski {Opt_quota_quantum, "quota_quantum=%d"}, 116f25934c5SChristoph Hellwig {Opt_barrier, "barrier"}, 117f25934c5SChristoph Hellwig {Opt_nobarrier, "nobarrier"}, 1189e6e0a12SSteven Whitehouse {Opt_error, NULL} 1199e6e0a12SSteven Whitehouse }; 1209e6e0a12SSteven Whitehouse 1219e6e0a12SSteven Whitehouse /** 1229e6e0a12SSteven Whitehouse * gfs2_mount_args - Parse mount options 123f55073ffSSteven Whitehouse * @args: The structure into which the parsed options will be written 124f55073ffSSteven Whitehouse * @options: The options to parse 1259e6e0a12SSteven Whitehouse * 1269e6e0a12SSteven Whitehouse * Return: errno 1279e6e0a12SSteven Whitehouse */ 1289e6e0a12SSteven Whitehouse 129f55073ffSSteven Whitehouse int gfs2_mount_args(struct gfs2_args *args, char *options) 1309e6e0a12SSteven Whitehouse { 1319e6e0a12SSteven Whitehouse char *o; 1329e6e0a12SSteven Whitehouse int token; 1339e6e0a12SSteven Whitehouse substring_t tmp[MAX_OPT_ARGS]; 1349e6e0a12SSteven Whitehouse int rv; 1359e6e0a12SSteven Whitehouse 1369e6e0a12SSteven Whitehouse /* Split the options into tokens with the "," character and 1379e6e0a12SSteven Whitehouse process them */ 1389e6e0a12SSteven Whitehouse 1399e6e0a12SSteven Whitehouse while (1) { 1409e6e0a12SSteven Whitehouse o = strsep(&options, ","); 1419e6e0a12SSteven Whitehouse if (o == NULL) 1429e6e0a12SSteven Whitehouse break; 1439e6e0a12SSteven Whitehouse if (*o == '\0') 1449e6e0a12SSteven Whitehouse continue; 1459e6e0a12SSteven Whitehouse 1469e6e0a12SSteven Whitehouse token = match_token(o, tokens, tmp); 1479e6e0a12SSteven Whitehouse switch (token) { 1489e6e0a12SSteven Whitehouse case Opt_lockproto: 1499e6e0a12SSteven Whitehouse match_strlcpy(args->ar_lockproto, &tmp[0], 1509e6e0a12SSteven Whitehouse GFS2_LOCKNAME_LEN); 1519e6e0a12SSteven Whitehouse break; 1529e6e0a12SSteven Whitehouse case Opt_locktable: 1539e6e0a12SSteven Whitehouse match_strlcpy(args->ar_locktable, &tmp[0], 1549e6e0a12SSteven Whitehouse GFS2_LOCKNAME_LEN); 1559e6e0a12SSteven Whitehouse break; 1569e6e0a12SSteven Whitehouse case Opt_hostdata: 1579e6e0a12SSteven Whitehouse match_strlcpy(args->ar_hostdata, &tmp[0], 1589e6e0a12SSteven Whitehouse GFS2_LOCKNAME_LEN); 1599e6e0a12SSteven Whitehouse break; 1609e6e0a12SSteven Whitehouse case Opt_spectator: 1619e6e0a12SSteven Whitehouse args->ar_spectator = 1; 1629e6e0a12SSteven Whitehouse break; 1639e6e0a12SSteven Whitehouse case Opt_ignore_local_fs: 164f57a024eSSteven Whitehouse /* Retained for backwards compat only */ 1659e6e0a12SSteven Whitehouse break; 1669e6e0a12SSteven Whitehouse case Opt_localflocks: 1679e6e0a12SSteven Whitehouse args->ar_localflocks = 1; 1689e6e0a12SSteven Whitehouse break; 1699e6e0a12SSteven Whitehouse case Opt_localcaching: 170c2048b00SSteven Whitehouse /* Retained for backwards compat only */ 1719e6e0a12SSteven Whitehouse break; 1729e6e0a12SSteven Whitehouse case Opt_debug: 173d34843d0SBob Peterson if (args->ar_errors == GFS2_ERRORS_PANIC) { 174f55073ffSSteven Whitehouse printk(KERN_WARNING "GFS2: -o debug and -o errors=panic " 175d34843d0SBob Peterson "are mutually exclusive.\n"); 176d34843d0SBob Peterson return -EINVAL; 177d34843d0SBob Peterson } 1789e6e0a12SSteven Whitehouse args->ar_debug = 1; 1799e6e0a12SSteven Whitehouse break; 1809e6e0a12SSteven Whitehouse case Opt_nodebug: 1819e6e0a12SSteven Whitehouse args->ar_debug = 0; 1829e6e0a12SSteven Whitehouse break; 1839e6e0a12SSteven Whitehouse case Opt_upgrade: 184c80dbb58SSteven Whitehouse /* Retained for backwards compat only */ 1859e6e0a12SSteven Whitehouse break; 1869e6e0a12SSteven Whitehouse case Opt_acl: 1879e6e0a12SSteven Whitehouse args->ar_posix_acl = 1; 1889e6e0a12SSteven Whitehouse break; 1899e6e0a12SSteven Whitehouse case Opt_noacl: 1909e6e0a12SSteven Whitehouse args->ar_posix_acl = 0; 1919e6e0a12SSteven Whitehouse break; 1929e6e0a12SSteven Whitehouse case Opt_quota_off: 1939e6e0a12SSteven Whitehouse case Opt_noquota: 1949e6e0a12SSteven Whitehouse args->ar_quota = GFS2_QUOTA_OFF; 1959e6e0a12SSteven Whitehouse break; 1969e6e0a12SSteven Whitehouse case Opt_quota_account: 1979e6e0a12SSteven Whitehouse args->ar_quota = GFS2_QUOTA_ACCOUNT; 1989e6e0a12SSteven Whitehouse break; 1999e6e0a12SSteven Whitehouse case Opt_quota_on: 2009e6e0a12SSteven Whitehouse case Opt_quota: 2019e6e0a12SSteven Whitehouse args->ar_quota = GFS2_QUOTA_ON; 2029e6e0a12SSteven Whitehouse break; 2039e6e0a12SSteven Whitehouse case Opt_suiddir: 2049e6e0a12SSteven Whitehouse args->ar_suiddir = 1; 2059e6e0a12SSteven Whitehouse break; 2069e6e0a12SSteven Whitehouse case Opt_nosuiddir: 2079e6e0a12SSteven Whitehouse args->ar_suiddir = 0; 2089e6e0a12SSteven Whitehouse break; 2099e6e0a12SSteven Whitehouse case Opt_data_writeback: 2109e6e0a12SSteven Whitehouse args->ar_data = GFS2_DATA_WRITEBACK; 2119e6e0a12SSteven Whitehouse break; 2129e6e0a12SSteven Whitehouse case Opt_data_ordered: 2139e6e0a12SSteven Whitehouse args->ar_data = GFS2_DATA_ORDERED; 2149e6e0a12SSteven Whitehouse break; 2159e6e0a12SSteven Whitehouse case Opt_meta: 2169e6e0a12SSteven Whitehouse args->ar_meta = 1; 2179e6e0a12SSteven Whitehouse break; 2189e6e0a12SSteven Whitehouse case Opt_discard: 2199e6e0a12SSteven Whitehouse args->ar_discard = 1; 2209e6e0a12SSteven Whitehouse break; 2219e6e0a12SSteven Whitehouse case Opt_nodiscard: 2229e6e0a12SSteven Whitehouse args->ar_discard = 0; 2239e6e0a12SSteven Whitehouse break; 2249e6e0a12SSteven Whitehouse case Opt_commit: 2259e6e0a12SSteven Whitehouse rv = match_int(&tmp[0], &args->ar_commit); 2269e6e0a12SSteven Whitehouse if (rv || args->ar_commit <= 0) { 227f55073ffSSteven Whitehouse printk(KERN_WARNING "GFS2: commit mount option requires a positive numeric argument\n"); 2289e6e0a12SSteven Whitehouse return rv ? rv : -EINVAL; 2299e6e0a12SSteven Whitehouse } 2309e6e0a12SSteven Whitehouse break; 2313d3c10f2SBenjamin Marzinski case Opt_statfs_quantum: 2323d3c10f2SBenjamin Marzinski rv = match_int(&tmp[0], &args->ar_statfs_quantum); 2333d3c10f2SBenjamin Marzinski if (rv || args->ar_statfs_quantum < 0) { 2343d3c10f2SBenjamin Marzinski printk(KERN_WARNING "GFS2: statfs_quantum mount option requires a non-negative numeric argument\n"); 2353d3c10f2SBenjamin Marzinski return rv ? rv : -EINVAL; 2363d3c10f2SBenjamin Marzinski } 2373d3c10f2SBenjamin Marzinski break; 2383d3c10f2SBenjamin Marzinski case Opt_quota_quantum: 2393d3c10f2SBenjamin Marzinski rv = match_int(&tmp[0], &args->ar_quota_quantum); 2403d3c10f2SBenjamin Marzinski if (rv || args->ar_quota_quantum <= 0) { 2413d3c10f2SBenjamin Marzinski printk(KERN_WARNING "GFS2: quota_quantum mount option requires a positive numeric argument\n"); 2423d3c10f2SBenjamin Marzinski return rv ? rv : -EINVAL; 2433d3c10f2SBenjamin Marzinski } 2443d3c10f2SBenjamin Marzinski break; 2453d3c10f2SBenjamin Marzinski case Opt_statfs_percent: 2463d3c10f2SBenjamin Marzinski rv = match_int(&tmp[0], &args->ar_statfs_percent); 2473d3c10f2SBenjamin Marzinski if (rv || args->ar_statfs_percent < 0 || 2483d3c10f2SBenjamin Marzinski args->ar_statfs_percent > 100) { 2493d3c10f2SBenjamin Marzinski printk(KERN_WARNING "statfs_percent mount option requires a numeric argument between 0 and 100\n"); 2503d3c10f2SBenjamin Marzinski return rv ? rv : -EINVAL; 2513d3c10f2SBenjamin Marzinski } 2523d3c10f2SBenjamin Marzinski break; 253d34843d0SBob Peterson case Opt_err_withdraw: 254d34843d0SBob Peterson args->ar_errors = GFS2_ERRORS_WITHDRAW; 255d34843d0SBob Peterson break; 256d34843d0SBob Peterson case Opt_err_panic: 257d34843d0SBob Peterson if (args->ar_debug) { 258f55073ffSSteven Whitehouse printk(KERN_WARNING "GFS2: -o debug and -o errors=panic " 259d34843d0SBob Peterson "are mutually exclusive.\n"); 260d34843d0SBob Peterson return -EINVAL; 261d34843d0SBob Peterson } 262d34843d0SBob Peterson args->ar_errors = GFS2_ERRORS_PANIC; 263d34843d0SBob Peterson break; 264f25934c5SChristoph Hellwig case Opt_barrier: 265f25934c5SChristoph Hellwig args->ar_nobarrier = 0; 266f25934c5SChristoph Hellwig break; 267f25934c5SChristoph Hellwig case Opt_nobarrier: 268f25934c5SChristoph Hellwig args->ar_nobarrier = 1; 269f25934c5SChristoph Hellwig break; 2709e6e0a12SSteven Whitehouse case Opt_error: 2719e6e0a12SSteven Whitehouse default: 272f55073ffSSteven Whitehouse printk(KERN_WARNING "GFS2: invalid mount option: %s\n", o); 2739e6e0a12SSteven Whitehouse return -EINVAL; 2749e6e0a12SSteven Whitehouse } 2759e6e0a12SSteven Whitehouse } 2769e6e0a12SSteven Whitehouse 2779e6e0a12SSteven Whitehouse return 0; 2789e6e0a12SSteven Whitehouse } 279b3b94faaSDavid Teigland 280fefc03bfSSteven Whitehouse /** 281fefc03bfSSteven Whitehouse * gfs2_jindex_free - Clear all the journal index information 282fefc03bfSSteven Whitehouse * @sdp: The GFS2 superblock 283fefc03bfSSteven Whitehouse * 284fefc03bfSSteven Whitehouse */ 285fefc03bfSSteven Whitehouse 286fefc03bfSSteven Whitehouse void gfs2_jindex_free(struct gfs2_sbd *sdp) 287fefc03bfSSteven Whitehouse { 288fefc03bfSSteven Whitehouse struct list_head list, *head; 289fefc03bfSSteven Whitehouse struct gfs2_jdesc *jd; 290fefc03bfSSteven Whitehouse struct gfs2_journal_extent *jext; 291fefc03bfSSteven Whitehouse 292fefc03bfSSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 293fefc03bfSSteven Whitehouse list_add(&list, &sdp->sd_jindex_list); 294fefc03bfSSteven Whitehouse list_del_init(&sdp->sd_jindex_list); 295fefc03bfSSteven Whitehouse sdp->sd_journals = 0; 296fefc03bfSSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 297fefc03bfSSteven Whitehouse 298fefc03bfSSteven Whitehouse while (!list_empty(&list)) { 299fefc03bfSSteven Whitehouse jd = list_entry(list.next, struct gfs2_jdesc, jd_list); 300fefc03bfSSteven Whitehouse head = &jd->extent_list; 301fefc03bfSSteven Whitehouse while (!list_empty(head)) { 302fefc03bfSSteven Whitehouse jext = list_entry(head->next, 303fefc03bfSSteven Whitehouse struct gfs2_journal_extent, 304fefc03bfSSteven Whitehouse extent_list); 305fefc03bfSSteven Whitehouse list_del(&jext->extent_list); 306fefc03bfSSteven Whitehouse kfree(jext); 307fefc03bfSSteven Whitehouse } 308fefc03bfSSteven Whitehouse list_del(&jd->jd_list); 309fefc03bfSSteven Whitehouse iput(jd->jd_inode); 310fefc03bfSSteven Whitehouse kfree(jd); 311fefc03bfSSteven Whitehouse } 312fefc03bfSSteven Whitehouse } 313fefc03bfSSteven Whitehouse 314b3b94faaSDavid Teigland static struct gfs2_jdesc *jdesc_find_i(struct list_head *head, unsigned int jid) 315b3b94faaSDavid Teigland { 316b3b94faaSDavid Teigland struct gfs2_jdesc *jd; 317b3b94faaSDavid Teigland int found = 0; 318b3b94faaSDavid Teigland 319b3b94faaSDavid Teigland list_for_each_entry(jd, head, jd_list) { 320b3b94faaSDavid Teigland if (jd->jd_jid == jid) { 321b3b94faaSDavid Teigland found = 1; 322b3b94faaSDavid Teigland break; 323b3b94faaSDavid Teigland } 324b3b94faaSDavid Teigland } 325b3b94faaSDavid Teigland 326b3b94faaSDavid Teigland if (!found) 327b3b94faaSDavid Teigland jd = NULL; 328b3b94faaSDavid Teigland 329b3b94faaSDavid Teigland return jd; 330b3b94faaSDavid Teigland } 331b3b94faaSDavid Teigland 332b3b94faaSDavid Teigland struct gfs2_jdesc *gfs2_jdesc_find(struct gfs2_sbd *sdp, unsigned int jid) 333b3b94faaSDavid Teigland { 334b3b94faaSDavid Teigland struct gfs2_jdesc *jd; 335b3b94faaSDavid Teigland 336b3b94faaSDavid Teigland spin_lock(&sdp->sd_jindex_spin); 337b3b94faaSDavid Teigland jd = jdesc_find_i(&sdp->sd_jindex_list, jid); 338b3b94faaSDavid Teigland spin_unlock(&sdp->sd_jindex_spin); 339b3b94faaSDavid Teigland 340b3b94faaSDavid Teigland return jd; 341b3b94faaSDavid Teigland } 342b3b94faaSDavid Teigland 343b3b94faaSDavid Teigland int gfs2_jdesc_check(struct gfs2_jdesc *jd) 344b3b94faaSDavid Teigland { 345feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 346feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 347a2e0f799SSteven Whitehouse u64 size = i_size_read(jd->jd_inode); 348b3b94faaSDavid Teigland 349a2e0f799SSteven Whitehouse if (gfs2_check_internal_file_size(jd->jd_inode, 8 << 20, 1 << 30)) 350b3b94faaSDavid Teigland return -EIO; 351b3b94faaSDavid Teigland 352a2e0f799SSteven Whitehouse jd->jd_blocks = size >> sdp->sd_sb.sb_bsize_shift; 353a2e0f799SSteven Whitehouse 354a2e0f799SSteven Whitehouse if (gfs2_write_alloc_required(ip, 0, size)) { 355b3b94faaSDavid Teigland gfs2_consist_inode(ip); 356461cb419SBob Peterson return -EIO; 357b3b94faaSDavid Teigland } 358b3b94faaSDavid Teigland 359461cb419SBob Peterson return 0; 360b3b94faaSDavid Teigland } 361b3b94faaSDavid Teigland 362b3b94faaSDavid Teigland /** 363b3b94faaSDavid Teigland * gfs2_make_fs_rw - Turn a Read-Only FS into a Read-Write one 364b3b94faaSDavid Teigland * @sdp: the filesystem 365b3b94faaSDavid Teigland * 366b3b94faaSDavid Teigland * Returns: errno 367b3b94faaSDavid Teigland */ 368b3b94faaSDavid Teigland 369b3b94faaSDavid Teigland int gfs2_make_fs_rw(struct gfs2_sbd *sdp) 370b3b94faaSDavid Teigland { 371feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); 3725c676f6dSSteven Whitehouse struct gfs2_glock *j_gl = ip->i_gl; 373b3b94faaSDavid Teigland struct gfs2_holder t_gh; 37455167622SAl Viro struct gfs2_log_header_host head; 375b3b94faaSDavid Teigland int error; 376b3b94faaSDavid Teigland 3771c0f4872SSteven Whitehouse error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, 0, &t_gh); 378b3b94faaSDavid Teigland if (error) 379b3b94faaSDavid Teigland return error; 380b3b94faaSDavid Teigland 3811a14d3a6SSteven Whitehouse j_gl->gl_ops->go_inval(j_gl, DIO_METADATA); 382b3b94faaSDavid Teigland 383b3b94faaSDavid Teigland error = gfs2_find_jhead(sdp->sd_jdesc, &head); 384b3b94faaSDavid Teigland if (error) 385b3b94faaSDavid Teigland goto fail; 386b3b94faaSDavid Teigland 387b3b94faaSDavid Teigland if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) { 388b3b94faaSDavid Teigland gfs2_consist(sdp); 389b3b94faaSDavid Teigland error = -EIO; 390b3b94faaSDavid Teigland goto fail; 391b3b94faaSDavid Teigland } 392b3b94faaSDavid Teigland 393b3b94faaSDavid Teigland /* Initialize some head of the log stuff */ 394b3b94faaSDavid Teigland sdp->sd_log_sequence = head.lh_sequence + 1; 395b3b94faaSDavid Teigland gfs2_log_pointers_init(sdp, head.lh_blkno); 396b3b94faaSDavid Teigland 397b3b94faaSDavid Teigland error = gfs2_quota_init(sdp); 398b3b94faaSDavid Teigland if (error) 399a91ea69fSSteven Whitehouse goto fail; 400b3b94faaSDavid Teigland 401b3b94faaSDavid Teigland set_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); 402b3b94faaSDavid Teigland 403b3b94faaSDavid Teigland gfs2_glock_dq_uninit(&t_gh); 404b3b94faaSDavid Teigland 405b3b94faaSDavid Teigland return 0; 406b3b94faaSDavid Teigland 407b3b94faaSDavid Teigland fail: 408b3b94faaSDavid Teigland t_gh.gh_flags |= GL_NOCACHE; 409b3b94faaSDavid Teigland gfs2_glock_dq_uninit(&t_gh); 410b3b94faaSDavid Teigland 411b3b94faaSDavid Teigland return error; 412b3b94faaSDavid Teigland } 413b3b94faaSDavid Teigland 4141946f70aSBenjamin Marzinski void gfs2_statfs_change_in(struct gfs2_statfs_change_host *sc, const void *buf) 415bb8d8a6fSSteven Whitehouse { 416bb8d8a6fSSteven Whitehouse const struct gfs2_statfs_change *str = buf; 417bb8d8a6fSSteven Whitehouse 418bb8d8a6fSSteven Whitehouse sc->sc_total = be64_to_cpu(str->sc_total); 419bb8d8a6fSSteven Whitehouse sc->sc_free = be64_to_cpu(str->sc_free); 420bb8d8a6fSSteven Whitehouse sc->sc_dinodes = be64_to_cpu(str->sc_dinodes); 421bb8d8a6fSSteven Whitehouse } 422bb8d8a6fSSteven Whitehouse 423bb8d8a6fSSteven Whitehouse static void gfs2_statfs_change_out(const struct gfs2_statfs_change_host *sc, void *buf) 424bb8d8a6fSSteven Whitehouse { 425bb8d8a6fSSteven Whitehouse struct gfs2_statfs_change *str = buf; 426bb8d8a6fSSteven Whitehouse 427bb8d8a6fSSteven Whitehouse str->sc_total = cpu_to_be64(sc->sc_total); 428bb8d8a6fSSteven Whitehouse str->sc_free = cpu_to_be64(sc->sc_free); 429bb8d8a6fSSteven Whitehouse str->sc_dinodes = cpu_to_be64(sc->sc_dinodes); 430bb8d8a6fSSteven Whitehouse } 431bb8d8a6fSSteven Whitehouse 432b3b94faaSDavid Teigland int gfs2_statfs_init(struct gfs2_sbd *sdp) 433b3b94faaSDavid Teigland { 434feaa7bbaSSteven Whitehouse struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode); 435bd209cc0SAl Viro struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; 436feaa7bbaSSteven Whitehouse struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); 437bd209cc0SAl Viro struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; 438b3b94faaSDavid Teigland struct buffer_head *m_bh, *l_bh; 439b3b94faaSDavid Teigland struct gfs2_holder gh; 440b3b94faaSDavid Teigland int error; 441b3b94faaSDavid Teigland 442b3b94faaSDavid Teigland error = gfs2_glock_nq_init(m_ip->i_gl, LM_ST_EXCLUSIVE, GL_NOCACHE, 443b3b94faaSDavid Teigland &gh); 444b3b94faaSDavid Teigland if (error) 445b3b94faaSDavid Teigland return error; 446b3b94faaSDavid Teigland 447b3b94faaSDavid Teigland error = gfs2_meta_inode_buffer(m_ip, &m_bh); 448b3b94faaSDavid Teigland if (error) 449b3b94faaSDavid Teigland goto out; 450b3b94faaSDavid Teigland 451b3b94faaSDavid Teigland if (sdp->sd_args.ar_spectator) { 452b3b94faaSDavid Teigland spin_lock(&sdp->sd_statfs_spin); 453b3b94faaSDavid Teigland gfs2_statfs_change_in(m_sc, m_bh->b_data + 454b3b94faaSDavid Teigland sizeof(struct gfs2_dinode)); 455b3b94faaSDavid Teigland spin_unlock(&sdp->sd_statfs_spin); 456b3b94faaSDavid Teigland } else { 457b3b94faaSDavid Teigland error = gfs2_meta_inode_buffer(l_ip, &l_bh); 458b3b94faaSDavid Teigland if (error) 459b3b94faaSDavid Teigland goto out_m_bh; 460b3b94faaSDavid Teigland 461b3b94faaSDavid Teigland spin_lock(&sdp->sd_statfs_spin); 462b3b94faaSDavid Teigland gfs2_statfs_change_in(m_sc, m_bh->b_data + 463b3b94faaSDavid Teigland sizeof(struct gfs2_dinode)); 464b3b94faaSDavid Teigland gfs2_statfs_change_in(l_sc, l_bh->b_data + 465b3b94faaSDavid Teigland sizeof(struct gfs2_dinode)); 466b3b94faaSDavid Teigland spin_unlock(&sdp->sd_statfs_spin); 467b3b94faaSDavid Teigland 468b3b94faaSDavid Teigland brelse(l_bh); 469b3b94faaSDavid Teigland } 470b3b94faaSDavid Teigland 471b3b94faaSDavid Teigland out_m_bh: 472b3b94faaSDavid Teigland brelse(m_bh); 473b3b94faaSDavid Teigland out: 474b3b94faaSDavid Teigland gfs2_glock_dq_uninit(&gh); 475b3b94faaSDavid Teigland return 0; 476b3b94faaSDavid Teigland } 477b3b94faaSDavid Teigland 478cd915493SSteven Whitehouse void gfs2_statfs_change(struct gfs2_sbd *sdp, s64 total, s64 free, 479cd915493SSteven Whitehouse s64 dinodes) 480b3b94faaSDavid Teigland { 481feaa7bbaSSteven Whitehouse struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); 482bd209cc0SAl Viro struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; 4833d3c10f2SBenjamin Marzinski struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; 484b3b94faaSDavid Teigland struct buffer_head *l_bh; 485c14f5735SBenjamin Marzinski s64 x, y; 486c14f5735SBenjamin Marzinski int need_sync = 0; 487b3b94faaSDavid Teigland int error; 488b3b94faaSDavid Teigland 489b3b94faaSDavid Teigland error = gfs2_meta_inode_buffer(l_ip, &l_bh); 490b3b94faaSDavid Teigland if (error) 491b3b94faaSDavid Teigland return; 492b3b94faaSDavid Teigland 493d4e9c4c3SSteven Whitehouse gfs2_trans_add_bh(l_ip->i_gl, l_bh, 1); 494b3b94faaSDavid Teigland 495b3b94faaSDavid Teigland spin_lock(&sdp->sd_statfs_spin); 496b3b94faaSDavid Teigland l_sc->sc_total += total; 497b3b94faaSDavid Teigland l_sc->sc_free += free; 498b3b94faaSDavid Teigland l_sc->sc_dinodes += dinodes; 499907b9bceSSteven Whitehouse gfs2_statfs_change_out(l_sc, l_bh->b_data + sizeof(struct gfs2_dinode)); 500c14f5735SBenjamin Marzinski if (sdp->sd_args.ar_statfs_percent) { 501c14f5735SBenjamin Marzinski x = 100 * l_sc->sc_free; 502c14f5735SBenjamin Marzinski y = m_sc->sc_free * sdp->sd_args.ar_statfs_percent; 503c14f5735SBenjamin Marzinski if (x >= y || x <= -y) 504c14f5735SBenjamin Marzinski need_sync = 1; 505c14f5735SBenjamin Marzinski } 506b3b94faaSDavid Teigland spin_unlock(&sdp->sd_statfs_spin); 507b3b94faaSDavid Teigland 508b3b94faaSDavid Teigland brelse(l_bh); 509c14f5735SBenjamin Marzinski if (need_sync) 5103d3c10f2SBenjamin Marzinski gfs2_wake_up_statfs(sdp); 511b3b94faaSDavid Teigland } 512b3b94faaSDavid Teigland 5131946f70aSBenjamin Marzinski void update_statfs(struct gfs2_sbd *sdp, struct buffer_head *m_bh, 5141946f70aSBenjamin Marzinski struct buffer_head *l_bh) 5151946f70aSBenjamin Marzinski { 5161946f70aSBenjamin Marzinski struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode); 5171946f70aSBenjamin Marzinski struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); 5181946f70aSBenjamin Marzinski struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; 5191946f70aSBenjamin Marzinski struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; 5201946f70aSBenjamin Marzinski 5211946f70aSBenjamin Marzinski gfs2_trans_add_bh(l_ip->i_gl, l_bh, 1); 5221946f70aSBenjamin Marzinski 5231946f70aSBenjamin Marzinski spin_lock(&sdp->sd_statfs_spin); 5241946f70aSBenjamin Marzinski m_sc->sc_total += l_sc->sc_total; 5251946f70aSBenjamin Marzinski m_sc->sc_free += l_sc->sc_free; 5261946f70aSBenjamin Marzinski m_sc->sc_dinodes += l_sc->sc_dinodes; 5271946f70aSBenjamin Marzinski memset(l_sc, 0, sizeof(struct gfs2_statfs_change)); 5281946f70aSBenjamin Marzinski memset(l_bh->b_data + sizeof(struct gfs2_dinode), 5291946f70aSBenjamin Marzinski 0, sizeof(struct gfs2_statfs_change)); 5301946f70aSBenjamin Marzinski spin_unlock(&sdp->sd_statfs_spin); 5311946f70aSBenjamin Marzinski 5321946f70aSBenjamin Marzinski gfs2_trans_add_bh(m_ip->i_gl, m_bh, 1); 5331946f70aSBenjamin Marzinski gfs2_statfs_change_out(m_sc, m_bh->b_data + sizeof(struct gfs2_dinode)); 5341946f70aSBenjamin Marzinski } 5351946f70aSBenjamin Marzinski 5368c42d637SSteven Whitehouse int gfs2_statfs_sync(struct super_block *sb, int type) 537b3b94faaSDavid Teigland { 5388c42d637SSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 539feaa7bbaSSteven Whitehouse struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode); 540feaa7bbaSSteven Whitehouse struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); 541bd209cc0SAl Viro struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; 542bd209cc0SAl Viro struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; 543b3b94faaSDavid Teigland struct gfs2_holder gh; 544b3b94faaSDavid Teigland struct buffer_head *m_bh, *l_bh; 545b3b94faaSDavid Teigland int error; 546b3b94faaSDavid Teigland 547b3b94faaSDavid Teigland error = gfs2_glock_nq_init(m_ip->i_gl, LM_ST_EXCLUSIVE, GL_NOCACHE, 548b3b94faaSDavid Teigland &gh); 549b3b94faaSDavid Teigland if (error) 550b3b94faaSDavid Teigland return error; 551b3b94faaSDavid Teigland 552b3b94faaSDavid Teigland error = gfs2_meta_inode_buffer(m_ip, &m_bh); 553b3b94faaSDavid Teigland if (error) 554b3b94faaSDavid Teigland goto out; 555b3b94faaSDavid Teigland 556b3b94faaSDavid Teigland spin_lock(&sdp->sd_statfs_spin); 557b3b94faaSDavid Teigland gfs2_statfs_change_in(m_sc, m_bh->b_data + 558b3b94faaSDavid Teigland sizeof(struct gfs2_dinode)); 559b3b94faaSDavid Teigland if (!l_sc->sc_total && !l_sc->sc_free && !l_sc->sc_dinodes) { 560b3b94faaSDavid Teigland spin_unlock(&sdp->sd_statfs_spin); 561b3b94faaSDavid Teigland goto out_bh; 562b3b94faaSDavid Teigland } 563b3b94faaSDavid Teigland spin_unlock(&sdp->sd_statfs_spin); 564b3b94faaSDavid Teigland 565b3b94faaSDavid Teigland error = gfs2_meta_inode_buffer(l_ip, &l_bh); 566b3b94faaSDavid Teigland if (error) 567b3b94faaSDavid Teigland goto out_bh; 568b3b94faaSDavid Teigland 569b3b94faaSDavid Teigland error = gfs2_trans_begin(sdp, 2 * RES_DINODE, 0); 570b3b94faaSDavid Teigland if (error) 571b3b94faaSDavid Teigland goto out_bh2; 572b3b94faaSDavid Teigland 5731946f70aSBenjamin Marzinski update_statfs(sdp, m_bh, l_bh); 5743d3c10f2SBenjamin Marzinski sdp->sd_statfs_force_sync = 0; 575b3b94faaSDavid Teigland 576b3b94faaSDavid Teigland gfs2_trans_end(sdp); 577b3b94faaSDavid Teigland 578b3b94faaSDavid Teigland out_bh2: 579b3b94faaSDavid Teigland brelse(l_bh); 580b3b94faaSDavid Teigland out_bh: 581b3b94faaSDavid Teigland brelse(m_bh); 582b3b94faaSDavid Teigland out: 583b3b94faaSDavid Teigland gfs2_glock_dq_uninit(&gh); 584b3b94faaSDavid Teigland return error; 585b3b94faaSDavid Teigland } 586b3b94faaSDavid Teigland 587b3b94faaSDavid Teigland struct lfcc { 588b3b94faaSDavid Teigland struct list_head list; 589b3b94faaSDavid Teigland struct gfs2_holder gh; 590b3b94faaSDavid Teigland }; 591b3b94faaSDavid Teigland 592b3b94faaSDavid Teigland /** 593b3b94faaSDavid Teigland * gfs2_lock_fs_check_clean - Stop all writes to the FS and check that all 594b3b94faaSDavid Teigland * journals are clean 595b3b94faaSDavid Teigland * @sdp: the file system 596b3b94faaSDavid Teigland * @state: the state to put the transaction lock into 597b3b94faaSDavid Teigland * @t_gh: the hold on the transaction lock 598b3b94faaSDavid Teigland * 599b3b94faaSDavid Teigland * Returns: errno 600b3b94faaSDavid Teigland */ 601b3b94faaSDavid Teigland 60208bc2dbcSAdrian Bunk static int gfs2_lock_fs_check_clean(struct gfs2_sbd *sdp, 60308bc2dbcSAdrian Bunk struct gfs2_holder *t_gh) 604b3b94faaSDavid Teigland { 6055c676f6dSSteven Whitehouse struct gfs2_inode *ip; 606b3b94faaSDavid Teigland struct gfs2_jdesc *jd; 607b3b94faaSDavid Teigland struct lfcc *lfcc; 608b3b94faaSDavid Teigland LIST_HEAD(list); 60955167622SAl Viro struct gfs2_log_header_host lh; 610b3b94faaSDavid Teigland int error; 611b3b94faaSDavid Teigland 612b3b94faaSDavid Teigland list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { 613b3b94faaSDavid Teigland lfcc = kmalloc(sizeof(struct lfcc), GFP_KERNEL); 614b3b94faaSDavid Teigland if (!lfcc) { 615b3b94faaSDavid Teigland error = -ENOMEM; 616b3b94faaSDavid Teigland goto out; 617b3b94faaSDavid Teigland } 618feaa7bbaSSteven Whitehouse ip = GFS2_I(jd->jd_inode); 619feaa7bbaSSteven Whitehouse error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &lfcc->gh); 620b3b94faaSDavid Teigland if (error) { 621b3b94faaSDavid Teigland kfree(lfcc); 622b3b94faaSDavid Teigland goto out; 623b3b94faaSDavid Teigland } 624b3b94faaSDavid Teigland list_add(&lfcc->list, &list); 625b3b94faaSDavid Teigland } 626b3b94faaSDavid Teigland 627b3b94faaSDavid Teigland error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_DEFERRED, 6286802e340SSteven Whitehouse GL_NOCACHE, t_gh); 629b3b94faaSDavid Teigland 630b3b94faaSDavid Teigland list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { 631b3b94faaSDavid Teigland error = gfs2_jdesc_check(jd); 632b3b94faaSDavid Teigland if (error) 633b3b94faaSDavid Teigland break; 634b3b94faaSDavid Teigland error = gfs2_find_jhead(jd, &lh); 635b3b94faaSDavid Teigland if (error) 636b3b94faaSDavid Teigland break; 637b3b94faaSDavid Teigland if (!(lh.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) { 638b3b94faaSDavid Teigland error = -EBUSY; 639b3b94faaSDavid Teigland break; 640b3b94faaSDavid Teigland } 641b3b94faaSDavid Teigland } 642b3b94faaSDavid Teigland 643b3b94faaSDavid Teigland if (error) 644b3b94faaSDavid Teigland gfs2_glock_dq_uninit(t_gh); 645b3b94faaSDavid Teigland 646b3b94faaSDavid Teigland out: 647b3b94faaSDavid Teigland while (!list_empty(&list)) { 648b3b94faaSDavid Teigland lfcc = list_entry(list.next, struct lfcc, list); 649b3b94faaSDavid Teigland list_del(&lfcc->list); 650b3b94faaSDavid Teigland gfs2_glock_dq_uninit(&lfcc->gh); 651b3b94faaSDavid Teigland kfree(lfcc); 652b3b94faaSDavid Teigland } 653b3b94faaSDavid Teigland return error; 654b3b94faaSDavid Teigland } 655b3b94faaSDavid Teigland 656b3b94faaSDavid Teigland /** 657b3b94faaSDavid Teigland * gfs2_freeze_fs - freezes the file system 658b3b94faaSDavid Teigland * @sdp: the file system 659b3b94faaSDavid Teigland * 660b3b94faaSDavid Teigland * This function flushes data and meta data for all machines by 66125985edcSLucas De Marchi * acquiring the transaction log exclusively. All journals are 662b3b94faaSDavid Teigland * ensured to be in a clean state as well. 663b3b94faaSDavid Teigland * 664b3b94faaSDavid Teigland * Returns: errno 665b3b94faaSDavid Teigland */ 666b3b94faaSDavid Teigland 667b3b94faaSDavid Teigland int gfs2_freeze_fs(struct gfs2_sbd *sdp) 668b3b94faaSDavid Teigland { 669b3b94faaSDavid Teigland int error = 0; 670b3b94faaSDavid Teigland 671f55ab26aSSteven Whitehouse mutex_lock(&sdp->sd_freeze_lock); 672b3b94faaSDavid Teigland 673b3b94faaSDavid Teigland if (!sdp->sd_freeze_count++) { 674b3b94faaSDavid Teigland error = gfs2_lock_fs_check_clean(sdp, &sdp->sd_freeze_gh); 675b3b94faaSDavid Teigland if (error) 676b3b94faaSDavid Teigland sdp->sd_freeze_count--; 677b3b94faaSDavid Teigland } 678b3b94faaSDavid Teigland 679f55ab26aSSteven Whitehouse mutex_unlock(&sdp->sd_freeze_lock); 680b3b94faaSDavid Teigland 681b3b94faaSDavid Teigland return error; 682b3b94faaSDavid Teigland } 683b3b94faaSDavid Teigland 684b3b94faaSDavid Teigland /** 685b3b94faaSDavid Teigland * gfs2_unfreeze_fs - unfreezes the file system 686b3b94faaSDavid Teigland * @sdp: the file system 687b3b94faaSDavid Teigland * 688b3b94faaSDavid Teigland * This function allows the file system to proceed by unlocking 689b3b94faaSDavid Teigland * the exclusively held transaction lock. Other GFS2 nodes are 690b3b94faaSDavid Teigland * now free to acquire the lock shared and go on with their lives. 691b3b94faaSDavid Teigland * 692b3b94faaSDavid Teigland */ 693b3b94faaSDavid Teigland 694b3b94faaSDavid Teigland void gfs2_unfreeze_fs(struct gfs2_sbd *sdp) 695b3b94faaSDavid Teigland { 696f55ab26aSSteven Whitehouse mutex_lock(&sdp->sd_freeze_lock); 697b3b94faaSDavid Teigland 698b3b94faaSDavid Teigland if (sdp->sd_freeze_count && !--sdp->sd_freeze_count) 699b3b94faaSDavid Teigland gfs2_glock_dq_uninit(&sdp->sd_freeze_gh); 700b3b94faaSDavid Teigland 701f55ab26aSSteven Whitehouse mutex_unlock(&sdp->sd_freeze_lock); 702b3b94faaSDavid Teigland } 703b3b94faaSDavid Teigland 7049eed04cdSSteven Whitehouse void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf) 7059eed04cdSSteven Whitehouse { 7069eed04cdSSteven Whitehouse struct gfs2_dinode *str = buf; 7079eed04cdSSteven Whitehouse 7089eed04cdSSteven Whitehouse str->di_header.mh_magic = cpu_to_be32(GFS2_MAGIC); 7099eed04cdSSteven Whitehouse str->di_header.mh_type = cpu_to_be32(GFS2_METATYPE_DI); 7109eed04cdSSteven Whitehouse str->di_header.mh_format = cpu_to_be32(GFS2_FORMAT_DI); 7119eed04cdSSteven Whitehouse str->di_num.no_addr = cpu_to_be64(ip->i_no_addr); 7129eed04cdSSteven Whitehouse str->di_num.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino); 7139eed04cdSSteven Whitehouse str->di_mode = cpu_to_be32(ip->i_inode.i_mode); 7149eed04cdSSteven Whitehouse str->di_uid = cpu_to_be32(ip->i_inode.i_uid); 7159eed04cdSSteven Whitehouse str->di_gid = cpu_to_be32(ip->i_inode.i_gid); 7169eed04cdSSteven Whitehouse str->di_nlink = cpu_to_be32(ip->i_inode.i_nlink); 7179eed04cdSSteven Whitehouse str->di_size = cpu_to_be64(i_size_read(&ip->i_inode)); 7189eed04cdSSteven Whitehouse str->di_blocks = cpu_to_be64(gfs2_get_inode_blocks(&ip->i_inode)); 7199eed04cdSSteven Whitehouse str->di_atime = cpu_to_be64(ip->i_inode.i_atime.tv_sec); 7209eed04cdSSteven Whitehouse str->di_mtime = cpu_to_be64(ip->i_inode.i_mtime.tv_sec); 7219eed04cdSSteven Whitehouse str->di_ctime = cpu_to_be64(ip->i_inode.i_ctime.tv_sec); 7229eed04cdSSteven Whitehouse 7239eed04cdSSteven Whitehouse str->di_goal_meta = cpu_to_be64(ip->i_goal); 7249eed04cdSSteven Whitehouse str->di_goal_data = cpu_to_be64(ip->i_goal); 7259eed04cdSSteven Whitehouse str->di_generation = cpu_to_be64(ip->i_generation); 7269eed04cdSSteven Whitehouse 7279eed04cdSSteven Whitehouse str->di_flags = cpu_to_be32(ip->i_diskflags); 7289eed04cdSSteven Whitehouse str->di_height = cpu_to_be16(ip->i_height); 7299eed04cdSSteven Whitehouse str->di_payload_format = cpu_to_be32(S_ISDIR(ip->i_inode.i_mode) && 7309eed04cdSSteven Whitehouse !(ip->i_diskflags & GFS2_DIF_EXHASH) ? 7319eed04cdSSteven Whitehouse GFS2_FORMAT_DE : 0); 7329eed04cdSSteven Whitehouse str->di_depth = cpu_to_be16(ip->i_depth); 7339eed04cdSSteven Whitehouse str->di_entries = cpu_to_be32(ip->i_entries); 7349eed04cdSSteven Whitehouse 7359eed04cdSSteven Whitehouse str->di_eattr = cpu_to_be64(ip->i_eattr); 7369eed04cdSSteven Whitehouse str->di_atime_nsec = cpu_to_be32(ip->i_inode.i_atime.tv_nsec); 7379eed04cdSSteven Whitehouse str->di_mtime_nsec = cpu_to_be32(ip->i_inode.i_mtime.tv_nsec); 7389eed04cdSSteven Whitehouse str->di_ctime_nsec = cpu_to_be32(ip->i_inode.i_ctime.tv_nsec); 7399eed04cdSSteven Whitehouse } 7409e6e0a12SSteven Whitehouse 7419e6e0a12SSteven Whitehouse /** 7429e6e0a12SSteven Whitehouse * gfs2_write_inode - Make sure the inode is stable on the disk 7439e6e0a12SSteven Whitehouse * @inode: The inode 7441027efaaSSteven Whitehouse * @wbc: The writeback control structure 7459e6e0a12SSteven Whitehouse * 7469e6e0a12SSteven Whitehouse * Returns: errno 7479e6e0a12SSteven Whitehouse */ 7489e6e0a12SSteven Whitehouse 749a9185b41SChristoph Hellwig static int gfs2_write_inode(struct inode *inode, struct writeback_control *wbc) 7509e6e0a12SSteven Whitehouse { 7519e6e0a12SSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 7529e6e0a12SSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(inode); 7531027efaaSSteven Whitehouse struct address_space *metamapping = gfs2_glock2aspace(ip->i_gl); 7544667a0ecSSteven Whitehouse struct backing_dev_info *bdi = metamapping->backing_dev_info; 755ab9bbda0SSteven Whitehouse int ret = 0; 7569e6e0a12SSteven Whitehouse 757a9185b41SChristoph Hellwig if (wbc->sync_mode == WB_SYNC_ALL) 7589e6e0a12SSteven Whitehouse gfs2_log_flush(GFS2_SB(inode), ip->i_gl); 7594667a0ecSSteven Whitehouse if (bdi->dirty_exceeded) 7604667a0ecSSteven Whitehouse gfs2_ail1_flush(sdp, wbc); 7611d4ec642SSteven Whitehouse else 7621d4ec642SSteven Whitehouse filemap_fdatawrite(metamapping); 763ab9bbda0SSteven Whitehouse if (wbc->sync_mode == WB_SYNC_ALL) 7641027efaaSSteven Whitehouse ret = filemap_fdatawait(metamapping); 7651027efaaSSteven Whitehouse if (ret) 7661027efaaSSteven Whitehouse mark_inode_dirty_sync(inode); 7679e6e0a12SSteven Whitehouse return ret; 7689e6e0a12SSteven Whitehouse } 7699e6e0a12SSteven Whitehouse 7709e6e0a12SSteven Whitehouse /** 771ab9bbda0SSteven Whitehouse * gfs2_dirty_inode - check for atime updates 772ab9bbda0SSteven Whitehouse * @inode: The inode in question 773ab9bbda0SSteven Whitehouse * @flags: The type of dirty 774ab9bbda0SSteven Whitehouse * 775ab9bbda0SSteven Whitehouse * Unfortunately it can be called under any combination of inode 776ab9bbda0SSteven Whitehouse * glock and transaction lock, so we have to check carefully. 777ab9bbda0SSteven Whitehouse * 778ab9bbda0SSteven Whitehouse * At the moment this deals only with atime - it should be possible 779ab9bbda0SSteven Whitehouse * to expand that role in future, once a review of the locking has 780ab9bbda0SSteven Whitehouse * been carried out. 781ab9bbda0SSteven Whitehouse */ 782ab9bbda0SSteven Whitehouse 783ab9bbda0SSteven Whitehouse static void gfs2_dirty_inode(struct inode *inode, int flags) 784ab9bbda0SSteven Whitehouse { 785ab9bbda0SSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 786ab9bbda0SSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(inode); 787ab9bbda0SSteven Whitehouse struct buffer_head *bh; 788ab9bbda0SSteven Whitehouse struct gfs2_holder gh; 789ab9bbda0SSteven Whitehouse int need_unlock = 0; 790ab9bbda0SSteven Whitehouse int need_endtrans = 0; 791ab9bbda0SSteven Whitehouse int ret; 792ab9bbda0SSteven Whitehouse 793ab9bbda0SSteven Whitehouse if (!(flags & (I_DIRTY_DATASYNC|I_DIRTY_SYNC))) 794ab9bbda0SSteven Whitehouse return; 795ab9bbda0SSteven Whitehouse 796ab9bbda0SSteven Whitehouse if (!gfs2_glock_is_locked_by_me(ip->i_gl)) { 797ab9bbda0SSteven Whitehouse ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh); 798ab9bbda0SSteven Whitehouse if (ret) { 799ab9bbda0SSteven Whitehouse fs_err(sdp, "dirty_inode: glock %d\n", ret); 800ab9bbda0SSteven Whitehouse return; 801ab9bbda0SSteven Whitehouse } 802ab9bbda0SSteven Whitehouse need_unlock = 1; 803ab9bbda0SSteven Whitehouse } 804ab9bbda0SSteven Whitehouse 805ab9bbda0SSteven Whitehouse if (current->journal_info == NULL) { 806ab9bbda0SSteven Whitehouse ret = gfs2_trans_begin(sdp, RES_DINODE, 0); 807ab9bbda0SSteven Whitehouse if (ret) { 808ab9bbda0SSteven Whitehouse fs_err(sdp, "dirty_inode: gfs2_trans_begin %d\n", ret); 809ab9bbda0SSteven Whitehouse goto out; 810ab9bbda0SSteven Whitehouse } 811ab9bbda0SSteven Whitehouse need_endtrans = 1; 812ab9bbda0SSteven Whitehouse } 813ab9bbda0SSteven Whitehouse 814ab9bbda0SSteven Whitehouse ret = gfs2_meta_inode_buffer(ip, &bh); 815ab9bbda0SSteven Whitehouse if (ret == 0) { 816ab9bbda0SSteven Whitehouse gfs2_trans_add_bh(ip->i_gl, bh, 1); 817ab9bbda0SSteven Whitehouse gfs2_dinode_out(ip, bh->b_data); 818ab9bbda0SSteven Whitehouse brelse(bh); 819ab9bbda0SSteven Whitehouse } 820ab9bbda0SSteven Whitehouse 821ab9bbda0SSteven Whitehouse if (need_endtrans) 822ab9bbda0SSteven Whitehouse gfs2_trans_end(sdp); 823ab9bbda0SSteven Whitehouse out: 824ab9bbda0SSteven Whitehouse if (need_unlock) 825ab9bbda0SSteven Whitehouse gfs2_glock_dq_uninit(&gh); 826ab9bbda0SSteven Whitehouse } 827ab9bbda0SSteven Whitehouse 828ab9bbda0SSteven Whitehouse /** 8299e6e0a12SSteven Whitehouse * gfs2_make_fs_ro - Turn a Read-Write FS into a Read-Only one 8309e6e0a12SSteven Whitehouse * @sdp: the filesystem 8319e6e0a12SSteven Whitehouse * 8329e6e0a12SSteven Whitehouse * Returns: errno 8339e6e0a12SSteven Whitehouse */ 8349e6e0a12SSteven Whitehouse 8359e6e0a12SSteven Whitehouse static int gfs2_make_fs_ro(struct gfs2_sbd *sdp) 8369e6e0a12SSteven Whitehouse { 8379e6e0a12SSteven Whitehouse struct gfs2_holder t_gh; 8389e6e0a12SSteven Whitehouse int error; 8399e6e0a12SSteven Whitehouse 840b94a170eSBenjamin Marzinski flush_workqueue(gfs2_delete_workqueue); 841ceed1723SJan Kara gfs2_quota_sync(sdp->sd_vfs, 0); 8428c42d637SSteven Whitehouse gfs2_statfs_sync(sdp->sd_vfs, 0); 8439e6e0a12SSteven Whitehouse 8449e6e0a12SSteven Whitehouse error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, GL_NOCACHE, 8459e6e0a12SSteven Whitehouse &t_gh); 8469e6e0a12SSteven Whitehouse if (error && !test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) 8479e6e0a12SSteven Whitehouse return error; 8489e6e0a12SSteven Whitehouse 8499e6e0a12SSteven Whitehouse gfs2_meta_syncfs(sdp); 8509e6e0a12SSteven Whitehouse gfs2_log_shutdown(sdp); 8519e6e0a12SSteven Whitehouse 8529e6e0a12SSteven Whitehouse clear_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); 8539e6e0a12SSteven Whitehouse 8549e6e0a12SSteven Whitehouse if (t_gh.gh_gl) 8559e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&t_gh); 8569e6e0a12SSteven Whitehouse 8579e6e0a12SSteven Whitehouse gfs2_quota_cleanup(sdp); 8589e6e0a12SSteven Whitehouse 8599e6e0a12SSteven Whitehouse return error; 8609e6e0a12SSteven Whitehouse } 8619e6e0a12SSteven Whitehouse 8629e6e0a12SSteven Whitehouse static int gfs2_umount_recovery_wait(void *word) 8639e6e0a12SSteven Whitehouse { 8649e6e0a12SSteven Whitehouse schedule(); 8659e6e0a12SSteven Whitehouse return 0; 8669e6e0a12SSteven Whitehouse } 8679e6e0a12SSteven Whitehouse 8689e6e0a12SSteven Whitehouse /** 8699e6e0a12SSteven Whitehouse * gfs2_put_super - Unmount the filesystem 8709e6e0a12SSteven Whitehouse * @sb: The VFS superblock 8719e6e0a12SSteven Whitehouse * 8729e6e0a12SSteven Whitehouse */ 8739e6e0a12SSteven Whitehouse 8749e6e0a12SSteven Whitehouse static void gfs2_put_super(struct super_block *sb) 8759e6e0a12SSteven Whitehouse { 8769e6e0a12SSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 8779e6e0a12SSteven Whitehouse int error; 8789e6e0a12SSteven Whitehouse struct gfs2_jdesc *jd; 8799e6e0a12SSteven Whitehouse 8809e6e0a12SSteven Whitehouse /* Unfreeze the filesystem, if we need to */ 8819e6e0a12SSteven Whitehouse 8829e6e0a12SSteven Whitehouse mutex_lock(&sdp->sd_freeze_lock); 8839e6e0a12SSteven Whitehouse if (sdp->sd_freeze_count) 8849e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&sdp->sd_freeze_gh); 8859e6e0a12SSteven Whitehouse mutex_unlock(&sdp->sd_freeze_lock); 8869e6e0a12SSteven Whitehouse 8879e6e0a12SSteven Whitehouse /* No more recovery requests */ 8889e6e0a12SSteven Whitehouse set_bit(SDF_NORECOVERY, &sdp->sd_flags); 8899e6e0a12SSteven Whitehouse smp_mb(); 8909e6e0a12SSteven Whitehouse 8919e6e0a12SSteven Whitehouse /* Wait on outstanding recovery */ 8929e6e0a12SSteven Whitehouse restart: 8939e6e0a12SSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 8949e6e0a12SSteven Whitehouse list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { 8959e6e0a12SSteven Whitehouse if (!test_bit(JDF_RECOVERY, &jd->jd_flags)) 8969e6e0a12SSteven Whitehouse continue; 8979e6e0a12SSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 8989e6e0a12SSteven Whitehouse wait_on_bit(&jd->jd_flags, JDF_RECOVERY, 8999e6e0a12SSteven Whitehouse gfs2_umount_recovery_wait, TASK_UNINTERRUPTIBLE); 9009e6e0a12SSteven Whitehouse goto restart; 9019e6e0a12SSteven Whitehouse } 9029e6e0a12SSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 9039e6e0a12SSteven Whitehouse 9049e6e0a12SSteven Whitehouse kthread_stop(sdp->sd_quotad_process); 9059e6e0a12SSteven Whitehouse kthread_stop(sdp->sd_logd_process); 9069e6e0a12SSteven Whitehouse 9079e6e0a12SSteven Whitehouse if (!(sb->s_flags & MS_RDONLY)) { 9089e6e0a12SSteven Whitehouse error = gfs2_make_fs_ro(sdp); 9099e6e0a12SSteven Whitehouse if (error) 9109e6e0a12SSteven Whitehouse gfs2_io_error(sdp); 9119e6e0a12SSteven Whitehouse } 9129e6e0a12SSteven Whitehouse /* At this point, we're through modifying the disk */ 9139e6e0a12SSteven Whitehouse 9149e6e0a12SSteven Whitehouse /* Release stuff */ 9159e6e0a12SSteven Whitehouse 9169e6e0a12SSteven Whitehouse iput(sdp->sd_jindex); 9179e6e0a12SSteven Whitehouse iput(sdp->sd_statfs_inode); 9189e6e0a12SSteven Whitehouse iput(sdp->sd_rindex); 9199e6e0a12SSteven Whitehouse iput(sdp->sd_quota_inode); 9209e6e0a12SSteven Whitehouse 9219e6e0a12SSteven Whitehouse gfs2_glock_put(sdp->sd_rename_gl); 9229e6e0a12SSteven Whitehouse gfs2_glock_put(sdp->sd_trans_gl); 9239e6e0a12SSteven Whitehouse 9249e6e0a12SSteven Whitehouse if (!sdp->sd_args.ar_spectator) { 9259e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&sdp->sd_journal_gh); 9269e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); 9279e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&sdp->sd_sc_gh); 9289e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&sdp->sd_qc_gh); 9299e6e0a12SSteven Whitehouse iput(sdp->sd_sc_inode); 9309e6e0a12SSteven Whitehouse iput(sdp->sd_qc_inode); 9319e6e0a12SSteven Whitehouse } 9329e6e0a12SSteven Whitehouse 9339e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&sdp->sd_live_gh); 9349e6e0a12SSteven Whitehouse gfs2_clear_rgrpd(sdp); 9359e6e0a12SSteven Whitehouse gfs2_jindex_free(sdp); 9369e6e0a12SSteven Whitehouse /* Take apart glock structures and buffer lists */ 9379e6e0a12SSteven Whitehouse gfs2_gl_hash_clear(sdp); 9389e6e0a12SSteven Whitehouse /* Unmount the locking protocol */ 9399e6e0a12SSteven Whitehouse gfs2_lm_unmount(sdp); 9409e6e0a12SSteven Whitehouse 9419e6e0a12SSteven Whitehouse /* At this point, we're through participating in the lockspace */ 9429e6e0a12SSteven Whitehouse gfs2_sys_fs_del(sdp); 9439e6e0a12SSteven Whitehouse } 9449e6e0a12SSteven Whitehouse 9459e6e0a12SSteven Whitehouse /** 9469e6e0a12SSteven Whitehouse * gfs2_sync_fs - sync the filesystem 9479e6e0a12SSteven Whitehouse * @sb: the superblock 9489e6e0a12SSteven Whitehouse * 9499e6e0a12SSteven Whitehouse * Flushes the log to disk. 9509e6e0a12SSteven Whitehouse */ 9519e6e0a12SSteven Whitehouse 9529e6e0a12SSteven Whitehouse static int gfs2_sync_fs(struct super_block *sb, int wait) 9539e6e0a12SSteven Whitehouse { 9541027efaaSSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 955*a1177825SJan Kara 956*a1177825SJan Kara gfs2_quota_sync(sb, -1); 9571027efaaSSteven Whitehouse if (wait && sdp) 9581027efaaSSteven Whitehouse gfs2_log_flush(sdp, NULL); 9599e6e0a12SSteven Whitehouse return 0; 9609e6e0a12SSteven Whitehouse } 9619e6e0a12SSteven Whitehouse 9629e6e0a12SSteven Whitehouse /** 9639e6e0a12SSteven Whitehouse * gfs2_freeze - prevent further writes to the filesystem 9649e6e0a12SSteven Whitehouse * @sb: the VFS structure for the filesystem 9659e6e0a12SSteven Whitehouse * 9669e6e0a12SSteven Whitehouse */ 9679e6e0a12SSteven Whitehouse 9689e6e0a12SSteven Whitehouse static int gfs2_freeze(struct super_block *sb) 9699e6e0a12SSteven Whitehouse { 9709e6e0a12SSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 9719e6e0a12SSteven Whitehouse int error; 9729e6e0a12SSteven Whitehouse 9739e6e0a12SSteven Whitehouse if (test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) 9749e6e0a12SSteven Whitehouse return -EINVAL; 9759e6e0a12SSteven Whitehouse 9769e6e0a12SSteven Whitehouse for (;;) { 9779e6e0a12SSteven Whitehouse error = gfs2_freeze_fs(sdp); 9789e6e0a12SSteven Whitehouse if (!error) 9799e6e0a12SSteven Whitehouse break; 9809e6e0a12SSteven Whitehouse 9819e6e0a12SSteven Whitehouse switch (error) { 9829e6e0a12SSteven Whitehouse case -EBUSY: 9839e6e0a12SSteven Whitehouse fs_err(sdp, "waiting for recovery before freeze\n"); 9849e6e0a12SSteven Whitehouse break; 9859e6e0a12SSteven Whitehouse 9869e6e0a12SSteven Whitehouse default: 9879e6e0a12SSteven Whitehouse fs_err(sdp, "error freezing FS: %d\n", error); 9889e6e0a12SSteven Whitehouse break; 9899e6e0a12SSteven Whitehouse } 9909e6e0a12SSteven Whitehouse 9919e6e0a12SSteven Whitehouse fs_err(sdp, "retrying...\n"); 9929e6e0a12SSteven Whitehouse msleep(1000); 9939e6e0a12SSteven Whitehouse } 9949e6e0a12SSteven Whitehouse return 0; 9959e6e0a12SSteven Whitehouse } 9969e6e0a12SSteven Whitehouse 9979e6e0a12SSteven Whitehouse /** 9989e6e0a12SSteven Whitehouse * gfs2_unfreeze - reallow writes to the filesystem 9999e6e0a12SSteven Whitehouse * @sb: the VFS structure for the filesystem 10009e6e0a12SSteven Whitehouse * 10019e6e0a12SSteven Whitehouse */ 10029e6e0a12SSteven Whitehouse 10039e6e0a12SSteven Whitehouse static int gfs2_unfreeze(struct super_block *sb) 10049e6e0a12SSteven Whitehouse { 10059e6e0a12SSteven Whitehouse gfs2_unfreeze_fs(sb->s_fs_info); 10069e6e0a12SSteven Whitehouse return 0; 10079e6e0a12SSteven Whitehouse } 10089e6e0a12SSteven Whitehouse 10099e6e0a12SSteven Whitehouse /** 10109e6e0a12SSteven Whitehouse * statfs_fill - fill in the sg for a given RG 10119e6e0a12SSteven Whitehouse * @rgd: the RG 10129e6e0a12SSteven Whitehouse * @sc: the sc structure 10139e6e0a12SSteven Whitehouse * 10149e6e0a12SSteven Whitehouse * Returns: 0 on success, -ESTALE if the LVB is invalid 10159e6e0a12SSteven Whitehouse */ 10169e6e0a12SSteven Whitehouse 10179e6e0a12SSteven Whitehouse static int statfs_slow_fill(struct gfs2_rgrpd *rgd, 10189e6e0a12SSteven Whitehouse struct gfs2_statfs_change_host *sc) 10199e6e0a12SSteven Whitehouse { 10209e6e0a12SSteven Whitehouse gfs2_rgrp_verify(rgd); 10219e6e0a12SSteven Whitehouse sc->sc_total += rgd->rd_data; 10229e6e0a12SSteven Whitehouse sc->sc_free += rgd->rd_free; 10239e6e0a12SSteven Whitehouse sc->sc_dinodes += rgd->rd_dinodes; 10249e6e0a12SSteven Whitehouse return 0; 10259e6e0a12SSteven Whitehouse } 10269e6e0a12SSteven Whitehouse 10279e6e0a12SSteven Whitehouse /** 10289e6e0a12SSteven Whitehouse * gfs2_statfs_slow - Stat a filesystem using asynchronous locking 10299e6e0a12SSteven Whitehouse * @sdp: the filesystem 10309e6e0a12SSteven Whitehouse * @sc: the sc info that will be returned 10319e6e0a12SSteven Whitehouse * 10329e6e0a12SSteven Whitehouse * Any error (other than a signal) will cause this routine to fall back 10339e6e0a12SSteven Whitehouse * to the synchronous version. 10349e6e0a12SSteven Whitehouse * 10359e6e0a12SSteven Whitehouse * FIXME: This really shouldn't busy wait like this. 10369e6e0a12SSteven Whitehouse * 10379e6e0a12SSteven Whitehouse * Returns: errno 10389e6e0a12SSteven Whitehouse */ 10399e6e0a12SSteven Whitehouse 10409e6e0a12SSteven Whitehouse static int gfs2_statfs_slow(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc) 10419e6e0a12SSteven Whitehouse { 10429e6e0a12SSteven Whitehouse struct gfs2_rgrpd *rgd_next; 10439e6e0a12SSteven Whitehouse struct gfs2_holder *gha, *gh; 10449e6e0a12SSteven Whitehouse unsigned int slots = 64; 10459e6e0a12SSteven Whitehouse unsigned int x; 10469e6e0a12SSteven Whitehouse int done; 10479e6e0a12SSteven Whitehouse int error = 0, err; 10489e6e0a12SSteven Whitehouse 10499e6e0a12SSteven Whitehouse memset(sc, 0, sizeof(struct gfs2_statfs_change_host)); 10509e6e0a12SSteven Whitehouse gha = kcalloc(slots, sizeof(struct gfs2_holder), GFP_KERNEL); 10519e6e0a12SSteven Whitehouse if (!gha) 10529e6e0a12SSteven Whitehouse return -ENOMEM; 10539e6e0a12SSteven Whitehouse 10549e6e0a12SSteven Whitehouse rgd_next = gfs2_rgrpd_get_first(sdp); 10559e6e0a12SSteven Whitehouse 10569e6e0a12SSteven Whitehouse for (;;) { 10579e6e0a12SSteven Whitehouse done = 1; 10589e6e0a12SSteven Whitehouse 10599e6e0a12SSteven Whitehouse for (x = 0; x < slots; x++) { 10609e6e0a12SSteven Whitehouse gh = gha + x; 10619e6e0a12SSteven Whitehouse 10629e6e0a12SSteven Whitehouse if (gh->gh_gl && gfs2_glock_poll(gh)) { 10639e6e0a12SSteven Whitehouse err = gfs2_glock_wait(gh); 10649e6e0a12SSteven Whitehouse if (err) { 10659e6e0a12SSteven Whitehouse gfs2_holder_uninit(gh); 10669e6e0a12SSteven Whitehouse error = err; 10679e6e0a12SSteven Whitehouse } else { 10689e6e0a12SSteven Whitehouse if (!error) 10699e6e0a12SSteven Whitehouse error = statfs_slow_fill( 10709e6e0a12SSteven Whitehouse gh->gh_gl->gl_object, sc); 10719e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(gh); 10729e6e0a12SSteven Whitehouse } 10739e6e0a12SSteven Whitehouse } 10749e6e0a12SSteven Whitehouse 10759e6e0a12SSteven Whitehouse if (gh->gh_gl) 10769e6e0a12SSteven Whitehouse done = 0; 10779e6e0a12SSteven Whitehouse else if (rgd_next && !error) { 10789e6e0a12SSteven Whitehouse error = gfs2_glock_nq_init(rgd_next->rd_gl, 10799e6e0a12SSteven Whitehouse LM_ST_SHARED, 10809e6e0a12SSteven Whitehouse GL_ASYNC, 10819e6e0a12SSteven Whitehouse gh); 10829e6e0a12SSteven Whitehouse rgd_next = gfs2_rgrpd_get_next(rgd_next); 10839e6e0a12SSteven Whitehouse done = 0; 10849e6e0a12SSteven Whitehouse } 10859e6e0a12SSteven Whitehouse 10869e6e0a12SSteven Whitehouse if (signal_pending(current)) 10879e6e0a12SSteven Whitehouse error = -ERESTARTSYS; 10889e6e0a12SSteven Whitehouse } 10899e6e0a12SSteven Whitehouse 10909e6e0a12SSteven Whitehouse if (done) 10919e6e0a12SSteven Whitehouse break; 10929e6e0a12SSteven Whitehouse 10939e6e0a12SSteven Whitehouse yield(); 10949e6e0a12SSteven Whitehouse } 10959e6e0a12SSteven Whitehouse 10969e6e0a12SSteven Whitehouse kfree(gha); 10979e6e0a12SSteven Whitehouse return error; 10989e6e0a12SSteven Whitehouse } 10999e6e0a12SSteven Whitehouse 11009e6e0a12SSteven Whitehouse /** 11019e6e0a12SSteven Whitehouse * gfs2_statfs_i - Do a statfs 11029e6e0a12SSteven Whitehouse * @sdp: the filesystem 11039e6e0a12SSteven Whitehouse * @sg: the sg structure 11049e6e0a12SSteven Whitehouse * 11059e6e0a12SSteven Whitehouse * Returns: errno 11069e6e0a12SSteven Whitehouse */ 11079e6e0a12SSteven Whitehouse 11089e6e0a12SSteven Whitehouse static int gfs2_statfs_i(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc) 11099e6e0a12SSteven Whitehouse { 11109e6e0a12SSteven Whitehouse struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; 11119e6e0a12SSteven Whitehouse struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; 11129e6e0a12SSteven Whitehouse 11139e6e0a12SSteven Whitehouse spin_lock(&sdp->sd_statfs_spin); 11149e6e0a12SSteven Whitehouse 11159e6e0a12SSteven Whitehouse *sc = *m_sc; 11169e6e0a12SSteven Whitehouse sc->sc_total += l_sc->sc_total; 11179e6e0a12SSteven Whitehouse sc->sc_free += l_sc->sc_free; 11189e6e0a12SSteven Whitehouse sc->sc_dinodes += l_sc->sc_dinodes; 11199e6e0a12SSteven Whitehouse 11209e6e0a12SSteven Whitehouse spin_unlock(&sdp->sd_statfs_spin); 11219e6e0a12SSteven Whitehouse 11229e6e0a12SSteven Whitehouse if (sc->sc_free < 0) 11239e6e0a12SSteven Whitehouse sc->sc_free = 0; 11249e6e0a12SSteven Whitehouse if (sc->sc_free > sc->sc_total) 11259e6e0a12SSteven Whitehouse sc->sc_free = sc->sc_total; 11269e6e0a12SSteven Whitehouse if (sc->sc_dinodes < 0) 11279e6e0a12SSteven Whitehouse sc->sc_dinodes = 0; 11289e6e0a12SSteven Whitehouse 11299e6e0a12SSteven Whitehouse return 0; 11309e6e0a12SSteven Whitehouse } 11319e6e0a12SSteven Whitehouse 11329e6e0a12SSteven Whitehouse /** 11339e6e0a12SSteven Whitehouse * gfs2_statfs - Gather and return stats about the filesystem 11349e6e0a12SSteven Whitehouse * @sb: The superblock 11359e6e0a12SSteven Whitehouse * @statfsbuf: The buffer 11369e6e0a12SSteven Whitehouse * 11379e6e0a12SSteven Whitehouse * Returns: 0 on success or error code 11389e6e0a12SSteven Whitehouse */ 11399e6e0a12SSteven Whitehouse 11409e6e0a12SSteven Whitehouse static int gfs2_statfs(struct dentry *dentry, struct kstatfs *buf) 11419e6e0a12SSteven Whitehouse { 11429e6e0a12SSteven Whitehouse struct super_block *sb = dentry->d_inode->i_sb; 11439e6e0a12SSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 11449e6e0a12SSteven Whitehouse struct gfs2_statfs_change_host sc; 11459e6e0a12SSteven Whitehouse int error; 11469e6e0a12SSteven Whitehouse 11478339ee54SSteven Whitehouse error = gfs2_rindex_update(sdp); 11488339ee54SSteven Whitehouse if (error) 11498339ee54SSteven Whitehouse return error; 11508339ee54SSteven Whitehouse 11519e6e0a12SSteven Whitehouse if (gfs2_tune_get(sdp, gt_statfs_slow)) 11529e6e0a12SSteven Whitehouse error = gfs2_statfs_slow(sdp, &sc); 11539e6e0a12SSteven Whitehouse else 11549e6e0a12SSteven Whitehouse error = gfs2_statfs_i(sdp, &sc); 11559e6e0a12SSteven Whitehouse 11569e6e0a12SSteven Whitehouse if (error) 11579e6e0a12SSteven Whitehouse return error; 11589e6e0a12SSteven Whitehouse 11599e6e0a12SSteven Whitehouse buf->f_type = GFS2_MAGIC; 11609e6e0a12SSteven Whitehouse buf->f_bsize = sdp->sd_sb.sb_bsize; 11619e6e0a12SSteven Whitehouse buf->f_blocks = sc.sc_total; 11629e6e0a12SSteven Whitehouse buf->f_bfree = sc.sc_free; 11639e6e0a12SSteven Whitehouse buf->f_bavail = sc.sc_free; 11649e6e0a12SSteven Whitehouse buf->f_files = sc.sc_dinodes + sc.sc_free; 11659e6e0a12SSteven Whitehouse buf->f_ffree = sc.sc_free; 11669e6e0a12SSteven Whitehouse buf->f_namelen = GFS2_FNAMESIZE; 11679e6e0a12SSteven Whitehouse 11689e6e0a12SSteven Whitehouse return 0; 11699e6e0a12SSteven Whitehouse } 11709e6e0a12SSteven Whitehouse 11719e6e0a12SSteven Whitehouse /** 11729e6e0a12SSteven Whitehouse * gfs2_remount_fs - called when the FS is remounted 11739e6e0a12SSteven Whitehouse * @sb: the filesystem 11749e6e0a12SSteven Whitehouse * @flags: the remount flags 11759e6e0a12SSteven Whitehouse * @data: extra data passed in (not used right now) 11769e6e0a12SSteven Whitehouse * 11779e6e0a12SSteven Whitehouse * Returns: errno 11789e6e0a12SSteven Whitehouse */ 11799e6e0a12SSteven Whitehouse 11809e6e0a12SSteven Whitehouse static int gfs2_remount_fs(struct super_block *sb, int *flags, char *data) 11819e6e0a12SSteven Whitehouse { 11829e6e0a12SSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 11839e6e0a12SSteven Whitehouse struct gfs2_args args = sdp->sd_args; /* Default to current settings */ 11849e6e0a12SSteven Whitehouse struct gfs2_tune *gt = &sdp->sd_tune; 11859e6e0a12SSteven Whitehouse int error; 11869e6e0a12SSteven Whitehouse 11879e6e0a12SSteven Whitehouse spin_lock(>->gt_spin); 11885e687eacSBenjamin Marzinski args.ar_commit = gt->gt_logd_secs; 11893d3c10f2SBenjamin Marzinski args.ar_quota_quantum = gt->gt_quota_quantum; 11903d3c10f2SBenjamin Marzinski if (gt->gt_statfs_slow) 11913d3c10f2SBenjamin Marzinski args.ar_statfs_quantum = 0; 11923d3c10f2SBenjamin Marzinski else 11933d3c10f2SBenjamin Marzinski args.ar_statfs_quantum = gt->gt_statfs_quantum; 11949e6e0a12SSteven Whitehouse spin_unlock(>->gt_spin); 1195f55073ffSSteven Whitehouse error = gfs2_mount_args(&args, data); 11969e6e0a12SSteven Whitehouse if (error) 11979e6e0a12SSteven Whitehouse return error; 11989e6e0a12SSteven Whitehouse 11999e6e0a12SSteven Whitehouse /* Not allowed to change locking details */ 12009e6e0a12SSteven Whitehouse if (strcmp(args.ar_lockproto, sdp->sd_args.ar_lockproto) || 12019e6e0a12SSteven Whitehouse strcmp(args.ar_locktable, sdp->sd_args.ar_locktable) || 12029e6e0a12SSteven Whitehouse strcmp(args.ar_hostdata, sdp->sd_args.ar_hostdata)) 12039e6e0a12SSteven Whitehouse return -EINVAL; 12049e6e0a12SSteven Whitehouse 12059e6e0a12SSteven Whitehouse /* Some flags must not be changed */ 12069e6e0a12SSteven Whitehouse if (args_neq(&args, &sdp->sd_args, spectator) || 12079e6e0a12SSteven Whitehouse args_neq(&args, &sdp->sd_args, localflocks) || 12089e6e0a12SSteven Whitehouse args_neq(&args, &sdp->sd_args, meta)) 12099e6e0a12SSteven Whitehouse return -EINVAL; 12109e6e0a12SSteven Whitehouse 12119e6e0a12SSteven Whitehouse if (sdp->sd_args.ar_spectator) 12129e6e0a12SSteven Whitehouse *flags |= MS_RDONLY; 12139e6e0a12SSteven Whitehouse 12149e6e0a12SSteven Whitehouse if ((sb->s_flags ^ *flags) & MS_RDONLY) { 12159e6e0a12SSteven Whitehouse if (*flags & MS_RDONLY) 12169e6e0a12SSteven Whitehouse error = gfs2_make_fs_ro(sdp); 12179e6e0a12SSteven Whitehouse else 12189e6e0a12SSteven Whitehouse error = gfs2_make_fs_rw(sdp); 12199e6e0a12SSteven Whitehouse if (error) 12209e6e0a12SSteven Whitehouse return error; 12219e6e0a12SSteven Whitehouse } 12229e6e0a12SSteven Whitehouse 12239e6e0a12SSteven Whitehouse sdp->sd_args = args; 12249e6e0a12SSteven Whitehouse if (sdp->sd_args.ar_posix_acl) 12259e6e0a12SSteven Whitehouse sb->s_flags |= MS_POSIXACL; 12269e6e0a12SSteven Whitehouse else 12279e6e0a12SSteven Whitehouse sb->s_flags &= ~MS_POSIXACL; 1228f25934c5SChristoph Hellwig if (sdp->sd_args.ar_nobarrier) 1229f25934c5SChristoph Hellwig set_bit(SDF_NOBARRIERS, &sdp->sd_flags); 1230f25934c5SChristoph Hellwig else 1231f25934c5SChristoph Hellwig clear_bit(SDF_NOBARRIERS, &sdp->sd_flags); 12329e6e0a12SSteven Whitehouse spin_lock(>->gt_spin); 12335e687eacSBenjamin Marzinski gt->gt_logd_secs = args.ar_commit; 12343d3c10f2SBenjamin Marzinski gt->gt_quota_quantum = args.ar_quota_quantum; 12353d3c10f2SBenjamin Marzinski if (args.ar_statfs_quantum) { 12363d3c10f2SBenjamin Marzinski gt->gt_statfs_slow = 0; 12373d3c10f2SBenjamin Marzinski gt->gt_statfs_quantum = args.ar_statfs_quantum; 12383d3c10f2SBenjamin Marzinski } 12393d3c10f2SBenjamin Marzinski else { 12403d3c10f2SBenjamin Marzinski gt->gt_statfs_slow = 1; 12413d3c10f2SBenjamin Marzinski gt->gt_statfs_quantum = 30; 12423d3c10f2SBenjamin Marzinski } 12439e6e0a12SSteven Whitehouse spin_unlock(>->gt_spin); 12449e6e0a12SSteven Whitehouse 12458633ecfaSSteven Whitehouse gfs2_online_uevent(sdp); 12469e6e0a12SSteven Whitehouse return 0; 12479e6e0a12SSteven Whitehouse } 12489e6e0a12SSteven Whitehouse 12499e6e0a12SSteven Whitehouse /** 12509e6e0a12SSteven Whitehouse * gfs2_drop_inode - Drop an inode (test for remote unlink) 12519e6e0a12SSteven Whitehouse * @inode: The inode to drop 12529e6e0a12SSteven Whitehouse * 12539e6e0a12SSteven Whitehouse * If we've received a callback on an iopen lock then its because a 12549e6e0a12SSteven Whitehouse * remote node tried to deallocate the inode but failed due to this node 12559e6e0a12SSteven Whitehouse * still having the inode open. Here we mark the link count zero 12569e6e0a12SSteven Whitehouse * since we know that it must have reached zero if the GLF_DEMOTE flag 12579e6e0a12SSteven Whitehouse * is set on the iopen glock. If we didn't do a disk read since the 12589e6e0a12SSteven Whitehouse * remote node removed the final link then we might otherwise miss 12599e6e0a12SSteven Whitehouse * this event. This check ensures that this node will deallocate the 12609e6e0a12SSteven Whitehouse * inode's blocks, or alternatively pass the baton on to another 12619e6e0a12SSteven Whitehouse * node for later deallocation. 12629e6e0a12SSteven Whitehouse */ 12639e6e0a12SSteven Whitehouse 126445321ac5SAl Viro static int gfs2_drop_inode(struct inode *inode) 12659e6e0a12SSteven Whitehouse { 12669e6e0a12SSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 12679e6e0a12SSteven Whitehouse 1268009d8518SSteven Whitehouse if (inode->i_nlink) { 12699e6e0a12SSteven Whitehouse struct gfs2_glock *gl = ip->i_iopen_gh.gh_gl; 12709e6e0a12SSteven Whitehouse if (gl && test_bit(GLF_DEMOTE, &gl->gl_flags)) 12719e6e0a12SSteven Whitehouse clear_nlink(inode); 12729e6e0a12SSteven Whitehouse } 127345321ac5SAl Viro return generic_drop_inode(inode); 12749e6e0a12SSteven Whitehouse } 12759e6e0a12SSteven Whitehouse 12769e6e0a12SSteven Whitehouse static int is_ancestor(const struct dentry *d1, const struct dentry *d2) 12779e6e0a12SSteven Whitehouse { 12789e6e0a12SSteven Whitehouse do { 12799e6e0a12SSteven Whitehouse if (d1 == d2) 12809e6e0a12SSteven Whitehouse return 1; 12819e6e0a12SSteven Whitehouse d1 = d1->d_parent; 12829e6e0a12SSteven Whitehouse } while (!IS_ROOT(d1)); 12839e6e0a12SSteven Whitehouse return 0; 12849e6e0a12SSteven Whitehouse } 12859e6e0a12SSteven Whitehouse 12869e6e0a12SSteven Whitehouse /** 12879e6e0a12SSteven Whitehouse * gfs2_show_options - Show mount options for /proc/mounts 12889e6e0a12SSteven Whitehouse * @s: seq_file structure 128934c80b1dSAl Viro * @root: root of this (sub)tree 12909e6e0a12SSteven Whitehouse * 12919e6e0a12SSteven Whitehouse * Returns: 0 on success or error code 12929e6e0a12SSteven Whitehouse */ 12939e6e0a12SSteven Whitehouse 129434c80b1dSAl Viro static int gfs2_show_options(struct seq_file *s, struct dentry *root) 12959e6e0a12SSteven Whitehouse { 129634c80b1dSAl Viro struct gfs2_sbd *sdp = root->d_sb->s_fs_info; 12979e6e0a12SSteven Whitehouse struct gfs2_args *args = &sdp->sd_args; 12983d3c10f2SBenjamin Marzinski int val; 12999e6e0a12SSteven Whitehouse 130034c80b1dSAl Viro if (is_ancestor(root, sdp->sd_master_dir)) 13019e6e0a12SSteven Whitehouse seq_printf(s, ",meta"); 13029e6e0a12SSteven Whitehouse if (args->ar_lockproto[0]) 13039e6e0a12SSteven Whitehouse seq_printf(s, ",lockproto=%s", args->ar_lockproto); 13049e6e0a12SSteven Whitehouse if (args->ar_locktable[0]) 13059e6e0a12SSteven Whitehouse seq_printf(s, ",locktable=%s", args->ar_locktable); 13069e6e0a12SSteven Whitehouse if (args->ar_hostdata[0]) 13079e6e0a12SSteven Whitehouse seq_printf(s, ",hostdata=%s", args->ar_hostdata); 13089e6e0a12SSteven Whitehouse if (args->ar_spectator) 13099e6e0a12SSteven Whitehouse seq_printf(s, ",spectator"); 13109e6e0a12SSteven Whitehouse if (args->ar_localflocks) 13119e6e0a12SSteven Whitehouse seq_printf(s, ",localflocks"); 13129e6e0a12SSteven Whitehouse if (args->ar_debug) 13139e6e0a12SSteven Whitehouse seq_printf(s, ",debug"); 13149e6e0a12SSteven Whitehouse if (args->ar_posix_acl) 13159e6e0a12SSteven Whitehouse seq_printf(s, ",acl"); 13169e6e0a12SSteven Whitehouse if (args->ar_quota != GFS2_QUOTA_DEFAULT) { 13179e6e0a12SSteven Whitehouse char *state; 13189e6e0a12SSteven Whitehouse switch (args->ar_quota) { 13199e6e0a12SSteven Whitehouse case GFS2_QUOTA_OFF: 13209e6e0a12SSteven Whitehouse state = "off"; 13219e6e0a12SSteven Whitehouse break; 13229e6e0a12SSteven Whitehouse case GFS2_QUOTA_ACCOUNT: 13239e6e0a12SSteven Whitehouse state = "account"; 13249e6e0a12SSteven Whitehouse break; 13259e6e0a12SSteven Whitehouse case GFS2_QUOTA_ON: 13269e6e0a12SSteven Whitehouse state = "on"; 13279e6e0a12SSteven Whitehouse break; 13289e6e0a12SSteven Whitehouse default: 13299e6e0a12SSteven Whitehouse state = "unknown"; 13309e6e0a12SSteven Whitehouse break; 13319e6e0a12SSteven Whitehouse } 13329e6e0a12SSteven Whitehouse seq_printf(s, ",quota=%s", state); 13339e6e0a12SSteven Whitehouse } 13349e6e0a12SSteven Whitehouse if (args->ar_suiddir) 13359e6e0a12SSteven Whitehouse seq_printf(s, ",suiddir"); 13369e6e0a12SSteven Whitehouse if (args->ar_data != GFS2_DATA_DEFAULT) { 13379e6e0a12SSteven Whitehouse char *state; 13389e6e0a12SSteven Whitehouse switch (args->ar_data) { 13399e6e0a12SSteven Whitehouse case GFS2_DATA_WRITEBACK: 13409e6e0a12SSteven Whitehouse state = "writeback"; 13419e6e0a12SSteven Whitehouse break; 13429e6e0a12SSteven Whitehouse case GFS2_DATA_ORDERED: 13439e6e0a12SSteven Whitehouse state = "ordered"; 13449e6e0a12SSteven Whitehouse break; 13459e6e0a12SSteven Whitehouse default: 13469e6e0a12SSteven Whitehouse state = "unknown"; 13479e6e0a12SSteven Whitehouse break; 13489e6e0a12SSteven Whitehouse } 13499e6e0a12SSteven Whitehouse seq_printf(s, ",data=%s", state); 13509e6e0a12SSteven Whitehouse } 13519e6e0a12SSteven Whitehouse if (args->ar_discard) 13529e6e0a12SSteven Whitehouse seq_printf(s, ",discard"); 13535e687eacSBenjamin Marzinski val = sdp->sd_tune.gt_logd_secs; 13545e687eacSBenjamin Marzinski if (val != 30) 13553d3c10f2SBenjamin Marzinski seq_printf(s, ",commit=%d", val); 13563d3c10f2SBenjamin Marzinski val = sdp->sd_tune.gt_statfs_quantum; 13573d3c10f2SBenjamin Marzinski if (val != 30) 13583d3c10f2SBenjamin Marzinski seq_printf(s, ",statfs_quantum=%d", val); 13593d3c10f2SBenjamin Marzinski val = sdp->sd_tune.gt_quota_quantum; 13603d3c10f2SBenjamin Marzinski if (val != 60) 13613d3c10f2SBenjamin Marzinski seq_printf(s, ",quota_quantum=%d", val); 13623d3c10f2SBenjamin Marzinski if (args->ar_statfs_percent) 13633d3c10f2SBenjamin Marzinski seq_printf(s, ",statfs_percent=%d", args->ar_statfs_percent); 1364d34843d0SBob Peterson if (args->ar_errors != GFS2_ERRORS_DEFAULT) { 1365d34843d0SBob Peterson const char *state; 1366d34843d0SBob Peterson 1367d34843d0SBob Peterson switch (args->ar_errors) { 1368d34843d0SBob Peterson case GFS2_ERRORS_WITHDRAW: 1369d34843d0SBob Peterson state = "withdraw"; 1370d34843d0SBob Peterson break; 1371d34843d0SBob Peterson case GFS2_ERRORS_PANIC: 1372d34843d0SBob Peterson state = "panic"; 1373d34843d0SBob Peterson break; 1374d34843d0SBob Peterson default: 1375d34843d0SBob Peterson state = "unknown"; 1376d34843d0SBob Peterson break; 1377d34843d0SBob Peterson } 1378d34843d0SBob Peterson seq_printf(s, ",errors=%s", state); 1379d34843d0SBob Peterson } 1380cdcfde62SSteven Whitehouse if (test_bit(SDF_NOBARRIERS, &sdp->sd_flags)) 1381cdcfde62SSteven Whitehouse seq_printf(s, ",nobarrier"); 1382913a71d2SSteven Whitehouse if (test_bit(SDF_DEMOTE, &sdp->sd_flags)) 1383913a71d2SSteven Whitehouse seq_printf(s, ",demote_interface_used"); 13849e6e0a12SSteven Whitehouse return 0; 13859e6e0a12SSteven Whitehouse } 13869e6e0a12SSteven Whitehouse 1387f42ab085SSteven Whitehouse static void gfs2_final_release_pages(struct gfs2_inode *ip) 1388f42ab085SSteven Whitehouse { 1389f42ab085SSteven Whitehouse struct inode *inode = &ip->i_inode; 1390f42ab085SSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 1391f42ab085SSteven Whitehouse 1392f42ab085SSteven Whitehouse truncate_inode_pages(gfs2_glock2aspace(ip->i_gl), 0); 1393f42ab085SSteven Whitehouse truncate_inode_pages(&inode->i_data, 0); 1394f42ab085SSteven Whitehouse 1395f42ab085SSteven Whitehouse if (atomic_read(&gl->gl_revokes) == 0) { 1396f42ab085SSteven Whitehouse clear_bit(GLF_LFLUSH, &gl->gl_flags); 1397f42ab085SSteven Whitehouse clear_bit(GLF_DIRTY, &gl->gl_flags); 1398f42ab085SSteven Whitehouse } 1399f42ab085SSteven Whitehouse } 1400f42ab085SSteven Whitehouse 1401f42ab085SSteven Whitehouse static int gfs2_dinode_dealloc(struct gfs2_inode *ip) 1402f42ab085SSteven Whitehouse { 1403f42ab085SSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); 1404564e12b1SBob Peterson struct gfs2_qadata *qa; 1405f42ab085SSteven Whitehouse struct gfs2_rgrpd *rgd; 1406564e12b1SBob Peterson struct gfs2_holder gh; 1407f42ab085SSteven Whitehouse int error; 1408f42ab085SSteven Whitehouse 1409f42ab085SSteven Whitehouse if (gfs2_get_inode_blocks(&ip->i_inode) != 1) { 141094fb763bSSteven Whitehouse gfs2_consist_inode(ip); 1411f42ab085SSteven Whitehouse return -EIO; 1412f42ab085SSteven Whitehouse } 1413f42ab085SSteven Whitehouse 1414564e12b1SBob Peterson qa = gfs2_qadata_get(ip); 1415564e12b1SBob Peterson if (!qa) 1416f42ab085SSteven Whitehouse return -ENOMEM; 1417f42ab085SSteven Whitehouse 1418f42ab085SSteven Whitehouse error = gfs2_quota_hold(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE); 1419f42ab085SSteven Whitehouse if (error) 1420f42ab085SSteven Whitehouse goto out; 1421f42ab085SSteven Whitehouse 142266fc061bSSteven Whitehouse rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr, 1); 1423f42ab085SSteven Whitehouse if (!rgd) { 1424f42ab085SSteven Whitehouse gfs2_consist_inode(ip); 1425f42ab085SSteven Whitehouse error = -EIO; 14268339ee54SSteven Whitehouse goto out_qs; 1427f42ab085SSteven Whitehouse } 1428f42ab085SSteven Whitehouse 1429564e12b1SBob Peterson error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, 0, &gh); 1430f42ab085SSteven Whitehouse if (error) 14318339ee54SSteven Whitehouse goto out_qs; 1432f42ab085SSteven Whitehouse 14334667a0ecSSteven Whitehouse error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_STATFS + RES_QUOTA, 14344667a0ecSSteven Whitehouse sdp->sd_jdesc->jd_blocks); 1435f42ab085SSteven Whitehouse if (error) 1436f42ab085SSteven Whitehouse goto out_rg_gunlock; 1437f42ab085SSteven Whitehouse 1438f42ab085SSteven Whitehouse gfs2_free_di(rgd, ip); 1439f42ab085SSteven Whitehouse 1440f42ab085SSteven Whitehouse gfs2_final_release_pages(ip); 1441f42ab085SSteven Whitehouse 1442f42ab085SSteven Whitehouse gfs2_trans_end(sdp); 1443f42ab085SSteven Whitehouse 1444f42ab085SSteven Whitehouse out_rg_gunlock: 1445564e12b1SBob Peterson gfs2_glock_dq_uninit(&gh); 1446f42ab085SSteven Whitehouse out_qs: 1447f42ab085SSteven Whitehouse gfs2_quota_unhold(ip); 1448f42ab085SSteven Whitehouse out: 1449564e12b1SBob Peterson gfs2_qadata_put(ip); 1450f42ab085SSteven Whitehouse return error; 1451f42ab085SSteven Whitehouse } 1452f42ab085SSteven Whitehouse 1453380f7c65SSteven Whitehouse /** 1454380f7c65SSteven Whitehouse * gfs2_evict_inode - Remove an inode from cache 1455380f7c65SSteven Whitehouse * @inode: The inode to evict 1456380f7c65SSteven Whitehouse * 1457380f7c65SSteven Whitehouse * There are three cases to consider: 1458380f7c65SSteven Whitehouse * 1. i_nlink == 0, we are final opener (and must deallocate) 1459380f7c65SSteven Whitehouse * 2. i_nlink == 0, we are not the final opener (and cannot deallocate) 1460380f7c65SSteven Whitehouse * 3. i_nlink > 0 1461380f7c65SSteven Whitehouse * 1462380f7c65SSteven Whitehouse * If the fs is read only, then we have to treat all cases as per #3 1463380f7c65SSteven Whitehouse * since we are unable to do any deallocation. The inode will be 1464380f7c65SSteven Whitehouse * deallocated by the next read/write node to attempt an allocation 1465380f7c65SSteven Whitehouse * in the same resource group 1466380f7c65SSteven Whitehouse * 14679e6e0a12SSteven Whitehouse * We have to (at the moment) hold the inodes main lock to cover 14689e6e0a12SSteven Whitehouse * the gap between unlocking the shared lock on the iopen lock and 14699e6e0a12SSteven Whitehouse * taking the exclusive lock. I'd rather do a shared -> exclusive 14709e6e0a12SSteven Whitehouse * conversion on the iopen lock, but we can change that later. This 14719e6e0a12SSteven Whitehouse * is safe, just less efficient. 14729e6e0a12SSteven Whitehouse */ 14739e6e0a12SSteven Whitehouse 1474d5c1515cSAl Viro static void gfs2_evict_inode(struct inode *inode) 14759e6e0a12SSteven Whitehouse { 1476001e8e8dSSteven Whitehouse struct super_block *sb = inode->i_sb; 1477001e8e8dSSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 14789e6e0a12SSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 14799e6e0a12SSteven Whitehouse struct gfs2_holder gh; 14809e6e0a12SSteven Whitehouse int error; 14819e6e0a12SSteven Whitehouse 1482001e8e8dSSteven Whitehouse if (inode->i_nlink || (sb->s_flags & MS_RDONLY)) 1483d5c1515cSAl Viro goto out; 1484d5c1515cSAl Viro 148544ad37d6SBob Peterson /* Must not read inode block until block type has been verified */ 148644ad37d6SBob Peterson error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_SKIP, &gh); 14879e6e0a12SSteven Whitehouse if (unlikely(error)) { 14889e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&ip->i_iopen_gh); 14899e6e0a12SSteven Whitehouse goto out; 14909e6e0a12SSteven Whitehouse } 14919e6e0a12SSteven Whitehouse 149240ac218fSSteven Whitehouse if (!test_bit(GIF_ALLOC_FAILED, &ip->i_flags)) { 1493acf7e244SSteven Whitehouse error = gfs2_check_blk_type(sdp, ip->i_no_addr, GFS2_BLKST_UNLINKED); 1494acf7e244SSteven Whitehouse if (error) 1495acf7e244SSteven Whitehouse goto out_truncate; 149640ac218fSSteven Whitehouse } 1497acf7e244SSteven Whitehouse 149844ad37d6SBob Peterson if (test_bit(GIF_INVALID, &ip->i_flags)) { 149944ad37d6SBob Peterson error = gfs2_inode_refresh(ip); 150044ad37d6SBob Peterson if (error) 150144ad37d6SBob Peterson goto out_truncate; 150244ad37d6SBob Peterson } 150344ad37d6SBob Peterson 150423c30108SBenjamin Marzinski ip->i_iopen_gh.gh_flags |= GL_NOCACHE; 15059e6e0a12SSteven Whitehouse gfs2_glock_dq_wait(&ip->i_iopen_gh); 15069e6e0a12SSteven Whitehouse gfs2_holder_reinit(LM_ST_EXCLUSIVE, LM_FLAG_TRY_1CB | GL_NOCACHE, &ip->i_iopen_gh); 15079e6e0a12SSteven Whitehouse error = gfs2_glock_nq(&ip->i_iopen_gh); 15089e6e0a12SSteven Whitehouse if (error) 15099e6e0a12SSteven Whitehouse goto out_truncate; 15109e6e0a12SSteven Whitehouse 1511380f7c65SSteven Whitehouse /* Case 1 starts here */ 1512380f7c65SSteven Whitehouse 15139e6e0a12SSteven Whitehouse if (S_ISDIR(inode->i_mode) && 15149e6e0a12SSteven Whitehouse (ip->i_diskflags & GFS2_DIF_EXHASH)) { 15159e6e0a12SSteven Whitehouse error = gfs2_dir_exhash_dealloc(ip); 15169e6e0a12SSteven Whitehouse if (error) 15179e6e0a12SSteven Whitehouse goto out_unlock; 15189e6e0a12SSteven Whitehouse } 15199e6e0a12SSteven Whitehouse 15209e6e0a12SSteven Whitehouse if (ip->i_eattr) { 15219e6e0a12SSteven Whitehouse error = gfs2_ea_dealloc(ip); 15229e6e0a12SSteven Whitehouse if (error) 15239e6e0a12SSteven Whitehouse goto out_unlock; 15249e6e0a12SSteven Whitehouse } 15259e6e0a12SSteven Whitehouse 15269e6e0a12SSteven Whitehouse if (!gfs2_is_stuffed(ip)) { 15279e6e0a12SSteven Whitehouse error = gfs2_file_dealloc(ip); 15289e6e0a12SSteven Whitehouse if (error) 15299e6e0a12SSteven Whitehouse goto out_unlock; 15309e6e0a12SSteven Whitehouse } 15319e6e0a12SSteven Whitehouse 15329e6e0a12SSteven Whitehouse error = gfs2_dinode_dealloc(ip); 15339e6e0a12SSteven Whitehouse goto out_unlock; 15349e6e0a12SSteven Whitehouse 15359e6e0a12SSteven Whitehouse out_truncate: 153640ac218fSSteven Whitehouse gfs2_log_flush(sdp, ip->i_gl); 153740ac218fSSteven Whitehouse write_inode_now(inode, 1); 1538b5b24d7aSSteven Whitehouse gfs2_ail_flush(ip->i_gl, 0); 153940ac218fSSteven Whitehouse 1540380f7c65SSteven Whitehouse /* Case 2 starts here */ 15419e6e0a12SSteven Whitehouse error = gfs2_trans_begin(sdp, 0, sdp->sd_jdesc->jd_blocks); 15429e6e0a12SSteven Whitehouse if (error) 15439e6e0a12SSteven Whitehouse goto out_unlock; 1544380f7c65SSteven Whitehouse /* Needs to be done before glock release & also in a transaction */ 1545380f7c65SSteven Whitehouse truncate_inode_pages(&inode->i_data, 0); 15469e6e0a12SSteven Whitehouse gfs2_trans_end(sdp); 15479e6e0a12SSteven Whitehouse 15489e6e0a12SSteven Whitehouse out_unlock: 1549380f7c65SSteven Whitehouse /* Error path for case 1 */ 15509e6e0a12SSteven Whitehouse if (test_bit(HIF_HOLDER, &ip->i_iopen_gh.gh_iflags)) 15519e6e0a12SSteven Whitehouse gfs2_glock_dq(&ip->i_iopen_gh); 15529e6e0a12SSteven Whitehouse gfs2_holder_uninit(&ip->i_iopen_gh); 15539e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&gh); 15549e6e0a12SSteven Whitehouse if (error && error != GLR_TRYFAILED && error != -EROFS) 1555d5c1515cSAl Viro fs_warn(sdp, "gfs2_evict_inode: %d\n", error); 15569e6e0a12SSteven Whitehouse out: 1557380f7c65SSteven Whitehouse /* Case 3 starts here */ 15589e6e0a12SSteven Whitehouse truncate_inode_pages(&inode->i_data, 0); 1559dbd5768fSJan Kara clear_inode(inode); 156017d539f0SSteven Whitehouse gfs2_dir_hash_inval(ip); 1561d5c1515cSAl Viro ip->i_gl->gl_object = NULL; 156235e478f4SSteven Whitehouse flush_delayed_work_sync(&ip->i_gl->gl_work); 156329687a2aSSteven Whitehouse gfs2_glock_add_to_lru(ip->i_gl); 1564d5c1515cSAl Viro gfs2_glock_put(ip->i_gl); 1565d5c1515cSAl Viro ip->i_gl = NULL; 1566d5c1515cSAl Viro if (ip->i_iopen_gh.gh_gl) { 1567d5c1515cSAl Viro ip->i_iopen_gh.gh_gl->gl_object = NULL; 1568d5c1515cSAl Viro gfs2_glock_dq_uninit(&ip->i_iopen_gh); 1569d5c1515cSAl Viro } 15709e6e0a12SSteven Whitehouse } 15719e6e0a12SSteven Whitehouse 15729e6e0a12SSteven Whitehouse static struct inode *gfs2_alloc_inode(struct super_block *sb) 15739e6e0a12SSteven Whitehouse { 15749e6e0a12SSteven Whitehouse struct gfs2_inode *ip; 15759e6e0a12SSteven Whitehouse 15769e6e0a12SSteven Whitehouse ip = kmem_cache_alloc(gfs2_inode_cachep, GFP_KERNEL); 15779e6e0a12SSteven Whitehouse if (ip) { 15789e6e0a12SSteven Whitehouse ip->i_flags = 0; 15799e6e0a12SSteven Whitehouse ip->i_gl = NULL; 158054335b1fSSteven Whitehouse ip->i_rgd = NULL; 15819e6e0a12SSteven Whitehouse } 15829e6e0a12SSteven Whitehouse return &ip->i_inode; 15839e6e0a12SSteven Whitehouse } 15849e6e0a12SSteven Whitehouse 1585fa0d7e3dSNick Piggin static void gfs2_i_callback(struct rcu_head *head) 1586fa0d7e3dSNick Piggin { 1587fa0d7e3dSNick Piggin struct inode *inode = container_of(head, struct inode, i_rcu); 1588fa0d7e3dSNick Piggin kmem_cache_free(gfs2_inode_cachep, inode); 1589fa0d7e3dSNick Piggin } 1590fa0d7e3dSNick Piggin 15919e6e0a12SSteven Whitehouse static void gfs2_destroy_inode(struct inode *inode) 15929e6e0a12SSteven Whitehouse { 1593fa0d7e3dSNick Piggin call_rcu(&inode->i_rcu, gfs2_i_callback); 15949e6e0a12SSteven Whitehouse } 15959e6e0a12SSteven Whitehouse 15969e6e0a12SSteven Whitehouse const struct super_operations gfs2_super_ops = { 15979e6e0a12SSteven Whitehouse .alloc_inode = gfs2_alloc_inode, 15989e6e0a12SSteven Whitehouse .destroy_inode = gfs2_destroy_inode, 15999e6e0a12SSteven Whitehouse .write_inode = gfs2_write_inode, 1600ab9bbda0SSteven Whitehouse .dirty_inode = gfs2_dirty_inode, 1601d5c1515cSAl Viro .evict_inode = gfs2_evict_inode, 16029e6e0a12SSteven Whitehouse .put_super = gfs2_put_super, 16039e6e0a12SSteven Whitehouse .sync_fs = gfs2_sync_fs, 16049e6e0a12SSteven Whitehouse .freeze_fs = gfs2_freeze, 16059e6e0a12SSteven Whitehouse .unfreeze_fs = gfs2_unfreeze, 16069e6e0a12SSteven Whitehouse .statfs = gfs2_statfs, 16079e6e0a12SSteven Whitehouse .remount_fs = gfs2_remount_fs, 16089e6e0a12SSteven Whitehouse .drop_inode = gfs2_drop_inode, 16099e6e0a12SSteven Whitehouse .show_options = gfs2_show_options, 16109e6e0a12SSteven Whitehouse }; 16119e6e0a12SSteven Whitehouse 1612