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> 26b3b94faaSDavid Teigland 27b3b94faaSDavid Teigland #include "gfs2.h" 285c676f6dSSteven Whitehouse #include "incore.h" 29b3b94faaSDavid Teigland #include "bmap.h" 30b3b94faaSDavid Teigland #include "dir.h" 31b3b94faaSDavid Teigland #include "glock.h" 32b3b94faaSDavid Teigland #include "glops.h" 33b3b94faaSDavid Teigland #include "inode.h" 34b3b94faaSDavid Teigland #include "log.h" 35b3b94faaSDavid Teigland #include "meta_io.h" 36b3b94faaSDavid Teigland #include "quota.h" 37b3b94faaSDavid Teigland #include "recovery.h" 38b3b94faaSDavid Teigland #include "rgrp.h" 39b3b94faaSDavid Teigland #include "super.h" 40b3b94faaSDavid Teigland #include "trans.h" 415c676f6dSSteven Whitehouse #include "util.h" 429e6e0a12SSteven Whitehouse #include "sys.h" 43307cf6e6SSteven Whitehouse #include "xattr.h" 449e6e0a12SSteven Whitehouse 459e6e0a12SSteven Whitehouse #define args_neq(a1, a2, x) ((a1)->ar_##x != (a2)->ar_##x) 469e6e0a12SSteven Whitehouse 479e6e0a12SSteven Whitehouse enum { 489e6e0a12SSteven Whitehouse Opt_lockproto, 499e6e0a12SSteven Whitehouse Opt_locktable, 509e6e0a12SSteven Whitehouse Opt_hostdata, 519e6e0a12SSteven Whitehouse Opt_spectator, 529e6e0a12SSteven Whitehouse Opt_ignore_local_fs, 539e6e0a12SSteven Whitehouse Opt_localflocks, 549e6e0a12SSteven Whitehouse Opt_localcaching, 559e6e0a12SSteven Whitehouse Opt_debug, 569e6e0a12SSteven Whitehouse Opt_nodebug, 579e6e0a12SSteven Whitehouse Opt_upgrade, 589e6e0a12SSteven Whitehouse Opt_acl, 599e6e0a12SSteven Whitehouse Opt_noacl, 609e6e0a12SSteven Whitehouse Opt_quota_off, 619e6e0a12SSteven Whitehouse Opt_quota_account, 629e6e0a12SSteven Whitehouse Opt_quota_on, 639e6e0a12SSteven Whitehouse Opt_quota, 649e6e0a12SSteven Whitehouse Opt_noquota, 659e6e0a12SSteven Whitehouse Opt_suiddir, 669e6e0a12SSteven Whitehouse Opt_nosuiddir, 679e6e0a12SSteven Whitehouse Opt_data_writeback, 689e6e0a12SSteven Whitehouse Opt_data_ordered, 699e6e0a12SSteven Whitehouse Opt_meta, 709e6e0a12SSteven Whitehouse Opt_discard, 719e6e0a12SSteven Whitehouse Opt_nodiscard, 729e6e0a12SSteven Whitehouse Opt_commit, 73d34843d0SBob Peterson Opt_err_withdraw, 74d34843d0SBob Peterson Opt_err_panic, 753d3c10f2SBenjamin Marzinski Opt_statfs_quantum, 763d3c10f2SBenjamin Marzinski Opt_statfs_percent, 773d3c10f2SBenjamin Marzinski Opt_quota_quantum, 78f25934c5SChristoph Hellwig Opt_barrier, 79f25934c5SChristoph Hellwig Opt_nobarrier, 809e6e0a12SSteven Whitehouse Opt_error, 819e6e0a12SSteven Whitehouse }; 829e6e0a12SSteven Whitehouse 839e6e0a12SSteven Whitehouse static const match_table_t tokens = { 849e6e0a12SSteven Whitehouse {Opt_lockproto, "lockproto=%s"}, 859e6e0a12SSteven Whitehouse {Opt_locktable, "locktable=%s"}, 869e6e0a12SSteven Whitehouse {Opt_hostdata, "hostdata=%s"}, 879e6e0a12SSteven Whitehouse {Opt_spectator, "spectator"}, 8843f74c19SSteven Whitehouse {Opt_spectator, "norecovery"}, 899e6e0a12SSteven Whitehouse {Opt_ignore_local_fs, "ignore_local_fs"}, 909e6e0a12SSteven Whitehouse {Opt_localflocks, "localflocks"}, 919e6e0a12SSteven Whitehouse {Opt_localcaching, "localcaching"}, 929e6e0a12SSteven Whitehouse {Opt_debug, "debug"}, 939e6e0a12SSteven Whitehouse {Opt_nodebug, "nodebug"}, 949e6e0a12SSteven Whitehouse {Opt_upgrade, "upgrade"}, 959e6e0a12SSteven Whitehouse {Opt_acl, "acl"}, 969e6e0a12SSteven Whitehouse {Opt_noacl, "noacl"}, 979e6e0a12SSteven Whitehouse {Opt_quota_off, "quota=off"}, 989e6e0a12SSteven Whitehouse {Opt_quota_account, "quota=account"}, 999e6e0a12SSteven Whitehouse {Opt_quota_on, "quota=on"}, 1009e6e0a12SSteven Whitehouse {Opt_quota, "quota"}, 1019e6e0a12SSteven Whitehouse {Opt_noquota, "noquota"}, 1029e6e0a12SSteven Whitehouse {Opt_suiddir, "suiddir"}, 1039e6e0a12SSteven Whitehouse {Opt_nosuiddir, "nosuiddir"}, 1049e6e0a12SSteven Whitehouse {Opt_data_writeback, "data=writeback"}, 1059e6e0a12SSteven Whitehouse {Opt_data_ordered, "data=ordered"}, 1069e6e0a12SSteven Whitehouse {Opt_meta, "meta"}, 1079e6e0a12SSteven Whitehouse {Opt_discard, "discard"}, 1089e6e0a12SSteven Whitehouse {Opt_nodiscard, "nodiscard"}, 1099e6e0a12SSteven Whitehouse {Opt_commit, "commit=%d"}, 110d34843d0SBob Peterson {Opt_err_withdraw, "errors=withdraw"}, 111d34843d0SBob Peterson {Opt_err_panic, "errors=panic"}, 1123d3c10f2SBenjamin Marzinski {Opt_statfs_quantum, "statfs_quantum=%d"}, 1133d3c10f2SBenjamin Marzinski {Opt_statfs_percent, "statfs_percent=%d"}, 1143d3c10f2SBenjamin Marzinski {Opt_quota_quantum, "quota_quantum=%d"}, 115f25934c5SChristoph Hellwig {Opt_barrier, "barrier"}, 116f25934c5SChristoph Hellwig {Opt_nobarrier, "nobarrier"}, 1179e6e0a12SSteven Whitehouse {Opt_error, NULL} 1189e6e0a12SSteven Whitehouse }; 1199e6e0a12SSteven Whitehouse 1209e6e0a12SSteven Whitehouse /** 1219e6e0a12SSteven Whitehouse * gfs2_mount_args - Parse mount options 122f55073ffSSteven Whitehouse * @args: The structure into which the parsed options will be written 123f55073ffSSteven Whitehouse * @options: The options to parse 1249e6e0a12SSteven Whitehouse * 1259e6e0a12SSteven Whitehouse * Return: errno 1269e6e0a12SSteven Whitehouse */ 1279e6e0a12SSteven Whitehouse 128f55073ffSSteven Whitehouse int gfs2_mount_args(struct gfs2_args *args, char *options) 1299e6e0a12SSteven Whitehouse { 1309e6e0a12SSteven Whitehouse char *o; 1319e6e0a12SSteven Whitehouse int token; 1329e6e0a12SSteven Whitehouse substring_t tmp[MAX_OPT_ARGS]; 1339e6e0a12SSteven Whitehouse int rv; 1349e6e0a12SSteven Whitehouse 1359e6e0a12SSteven Whitehouse /* Split the options into tokens with the "," character and 1369e6e0a12SSteven Whitehouse process them */ 1379e6e0a12SSteven Whitehouse 1389e6e0a12SSteven Whitehouse while (1) { 1399e6e0a12SSteven Whitehouse o = strsep(&options, ","); 1409e6e0a12SSteven Whitehouse if (o == NULL) 1419e6e0a12SSteven Whitehouse break; 1429e6e0a12SSteven Whitehouse if (*o == '\0') 1439e6e0a12SSteven Whitehouse continue; 1449e6e0a12SSteven Whitehouse 1459e6e0a12SSteven Whitehouse token = match_token(o, tokens, tmp); 1469e6e0a12SSteven Whitehouse switch (token) { 1479e6e0a12SSteven Whitehouse case Opt_lockproto: 1489e6e0a12SSteven Whitehouse match_strlcpy(args->ar_lockproto, &tmp[0], 1499e6e0a12SSteven Whitehouse GFS2_LOCKNAME_LEN); 1509e6e0a12SSteven Whitehouse break; 1519e6e0a12SSteven Whitehouse case Opt_locktable: 1529e6e0a12SSteven Whitehouse match_strlcpy(args->ar_locktable, &tmp[0], 1539e6e0a12SSteven Whitehouse GFS2_LOCKNAME_LEN); 1549e6e0a12SSteven Whitehouse break; 1559e6e0a12SSteven Whitehouse case Opt_hostdata: 1569e6e0a12SSteven Whitehouse match_strlcpy(args->ar_hostdata, &tmp[0], 1579e6e0a12SSteven Whitehouse GFS2_LOCKNAME_LEN); 1589e6e0a12SSteven Whitehouse break; 1599e6e0a12SSteven Whitehouse case Opt_spectator: 1609e6e0a12SSteven Whitehouse args->ar_spectator = 1; 1619e6e0a12SSteven Whitehouse break; 1629e6e0a12SSteven Whitehouse case Opt_ignore_local_fs: 163f57a024eSSteven Whitehouse /* Retained for backwards compat only */ 1649e6e0a12SSteven Whitehouse break; 1659e6e0a12SSteven Whitehouse case Opt_localflocks: 1669e6e0a12SSteven Whitehouse args->ar_localflocks = 1; 1679e6e0a12SSteven Whitehouse break; 1689e6e0a12SSteven Whitehouse case Opt_localcaching: 169c2048b00SSteven Whitehouse /* Retained for backwards compat only */ 1709e6e0a12SSteven Whitehouse break; 1719e6e0a12SSteven Whitehouse case Opt_debug: 172d34843d0SBob Peterson if (args->ar_errors == GFS2_ERRORS_PANIC) { 173f55073ffSSteven Whitehouse printk(KERN_WARNING "GFS2: -o debug and -o errors=panic " 174d34843d0SBob Peterson "are mutually exclusive.\n"); 175d34843d0SBob Peterson return -EINVAL; 176d34843d0SBob Peterson } 1779e6e0a12SSteven Whitehouse args->ar_debug = 1; 1789e6e0a12SSteven Whitehouse break; 1799e6e0a12SSteven Whitehouse case Opt_nodebug: 1809e6e0a12SSteven Whitehouse args->ar_debug = 0; 1819e6e0a12SSteven Whitehouse break; 1829e6e0a12SSteven Whitehouse case Opt_upgrade: 183c80dbb58SSteven Whitehouse /* Retained for backwards compat only */ 1849e6e0a12SSteven Whitehouse break; 1859e6e0a12SSteven Whitehouse case Opt_acl: 1869e6e0a12SSteven Whitehouse args->ar_posix_acl = 1; 1879e6e0a12SSteven Whitehouse break; 1889e6e0a12SSteven Whitehouse case Opt_noacl: 1899e6e0a12SSteven Whitehouse args->ar_posix_acl = 0; 1909e6e0a12SSteven Whitehouse break; 1919e6e0a12SSteven Whitehouse case Opt_quota_off: 1929e6e0a12SSteven Whitehouse case Opt_noquota: 1939e6e0a12SSteven Whitehouse args->ar_quota = GFS2_QUOTA_OFF; 1949e6e0a12SSteven Whitehouse break; 1959e6e0a12SSteven Whitehouse case Opt_quota_account: 1969e6e0a12SSteven Whitehouse args->ar_quota = GFS2_QUOTA_ACCOUNT; 1979e6e0a12SSteven Whitehouse break; 1989e6e0a12SSteven Whitehouse case Opt_quota_on: 1999e6e0a12SSteven Whitehouse case Opt_quota: 2009e6e0a12SSteven Whitehouse args->ar_quota = GFS2_QUOTA_ON; 2019e6e0a12SSteven Whitehouse break; 2029e6e0a12SSteven Whitehouse case Opt_suiddir: 2039e6e0a12SSteven Whitehouse args->ar_suiddir = 1; 2049e6e0a12SSteven Whitehouse break; 2059e6e0a12SSteven Whitehouse case Opt_nosuiddir: 2069e6e0a12SSteven Whitehouse args->ar_suiddir = 0; 2079e6e0a12SSteven Whitehouse break; 2089e6e0a12SSteven Whitehouse case Opt_data_writeback: 2099e6e0a12SSteven Whitehouse args->ar_data = GFS2_DATA_WRITEBACK; 2109e6e0a12SSteven Whitehouse break; 2119e6e0a12SSteven Whitehouse case Opt_data_ordered: 2129e6e0a12SSteven Whitehouse args->ar_data = GFS2_DATA_ORDERED; 2139e6e0a12SSteven Whitehouse break; 2149e6e0a12SSteven Whitehouse case Opt_meta: 2159e6e0a12SSteven Whitehouse args->ar_meta = 1; 2169e6e0a12SSteven Whitehouse break; 2179e6e0a12SSteven Whitehouse case Opt_discard: 2189e6e0a12SSteven Whitehouse args->ar_discard = 1; 2199e6e0a12SSteven Whitehouse break; 2209e6e0a12SSteven Whitehouse case Opt_nodiscard: 2219e6e0a12SSteven Whitehouse args->ar_discard = 0; 2229e6e0a12SSteven Whitehouse break; 2239e6e0a12SSteven Whitehouse case Opt_commit: 2249e6e0a12SSteven Whitehouse rv = match_int(&tmp[0], &args->ar_commit); 2259e6e0a12SSteven Whitehouse if (rv || args->ar_commit <= 0) { 226f55073ffSSteven Whitehouse printk(KERN_WARNING "GFS2: commit mount option requires a positive numeric argument\n"); 2279e6e0a12SSteven Whitehouse return rv ? rv : -EINVAL; 2289e6e0a12SSteven Whitehouse } 2299e6e0a12SSteven Whitehouse break; 2303d3c10f2SBenjamin Marzinski case Opt_statfs_quantum: 2313d3c10f2SBenjamin Marzinski rv = match_int(&tmp[0], &args->ar_statfs_quantum); 2323d3c10f2SBenjamin Marzinski if (rv || args->ar_statfs_quantum < 0) { 2333d3c10f2SBenjamin Marzinski printk(KERN_WARNING "GFS2: statfs_quantum mount option requires a non-negative numeric argument\n"); 2343d3c10f2SBenjamin Marzinski return rv ? rv : -EINVAL; 2353d3c10f2SBenjamin Marzinski } 2363d3c10f2SBenjamin Marzinski break; 2373d3c10f2SBenjamin Marzinski case Opt_quota_quantum: 2383d3c10f2SBenjamin Marzinski rv = match_int(&tmp[0], &args->ar_quota_quantum); 2393d3c10f2SBenjamin Marzinski if (rv || args->ar_quota_quantum <= 0) { 2403d3c10f2SBenjamin Marzinski printk(KERN_WARNING "GFS2: quota_quantum mount option requires a positive numeric argument\n"); 2413d3c10f2SBenjamin Marzinski return rv ? rv : -EINVAL; 2423d3c10f2SBenjamin Marzinski } 2433d3c10f2SBenjamin Marzinski break; 2443d3c10f2SBenjamin Marzinski case Opt_statfs_percent: 2453d3c10f2SBenjamin Marzinski rv = match_int(&tmp[0], &args->ar_statfs_percent); 2463d3c10f2SBenjamin Marzinski if (rv || args->ar_statfs_percent < 0 || 2473d3c10f2SBenjamin Marzinski args->ar_statfs_percent > 100) { 2483d3c10f2SBenjamin Marzinski printk(KERN_WARNING "statfs_percent mount option requires a numeric argument between 0 and 100\n"); 2493d3c10f2SBenjamin Marzinski return rv ? rv : -EINVAL; 2503d3c10f2SBenjamin Marzinski } 2513d3c10f2SBenjamin Marzinski break; 252d34843d0SBob Peterson case Opt_err_withdraw: 253d34843d0SBob Peterson args->ar_errors = GFS2_ERRORS_WITHDRAW; 254d34843d0SBob Peterson break; 255d34843d0SBob Peterson case Opt_err_panic: 256d34843d0SBob Peterson if (args->ar_debug) { 257f55073ffSSteven Whitehouse printk(KERN_WARNING "GFS2: -o debug and -o errors=panic " 258d34843d0SBob Peterson "are mutually exclusive.\n"); 259d34843d0SBob Peterson return -EINVAL; 260d34843d0SBob Peterson } 261d34843d0SBob Peterson args->ar_errors = GFS2_ERRORS_PANIC; 262d34843d0SBob Peterson break; 263f25934c5SChristoph Hellwig case Opt_barrier: 264f25934c5SChristoph Hellwig args->ar_nobarrier = 0; 265f25934c5SChristoph Hellwig break; 266f25934c5SChristoph Hellwig case Opt_nobarrier: 267f25934c5SChristoph Hellwig args->ar_nobarrier = 1; 268f25934c5SChristoph Hellwig break; 2699e6e0a12SSteven Whitehouse case Opt_error: 2709e6e0a12SSteven Whitehouse default: 271f55073ffSSteven Whitehouse printk(KERN_WARNING "GFS2: invalid mount option: %s\n", o); 2729e6e0a12SSteven Whitehouse return -EINVAL; 2739e6e0a12SSteven Whitehouse } 2749e6e0a12SSteven Whitehouse } 2759e6e0a12SSteven Whitehouse 2769e6e0a12SSteven Whitehouse return 0; 2779e6e0a12SSteven Whitehouse } 278b3b94faaSDavid Teigland 279fefc03bfSSteven Whitehouse /** 280fefc03bfSSteven Whitehouse * gfs2_jindex_free - Clear all the journal index information 281fefc03bfSSteven Whitehouse * @sdp: The GFS2 superblock 282fefc03bfSSteven Whitehouse * 283fefc03bfSSteven Whitehouse */ 284fefc03bfSSteven Whitehouse 285fefc03bfSSteven Whitehouse void gfs2_jindex_free(struct gfs2_sbd *sdp) 286fefc03bfSSteven Whitehouse { 287fefc03bfSSteven Whitehouse struct list_head list, *head; 288fefc03bfSSteven Whitehouse struct gfs2_jdesc *jd; 289fefc03bfSSteven Whitehouse struct gfs2_journal_extent *jext; 290fefc03bfSSteven Whitehouse 291fefc03bfSSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 292fefc03bfSSteven Whitehouse list_add(&list, &sdp->sd_jindex_list); 293fefc03bfSSteven Whitehouse list_del_init(&sdp->sd_jindex_list); 294fefc03bfSSteven Whitehouse sdp->sd_journals = 0; 295fefc03bfSSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 296fefc03bfSSteven Whitehouse 297fefc03bfSSteven Whitehouse while (!list_empty(&list)) { 298fefc03bfSSteven Whitehouse jd = list_entry(list.next, struct gfs2_jdesc, jd_list); 299fefc03bfSSteven Whitehouse head = &jd->extent_list; 300fefc03bfSSteven Whitehouse while (!list_empty(head)) { 301fefc03bfSSteven Whitehouse jext = list_entry(head->next, 302fefc03bfSSteven Whitehouse struct gfs2_journal_extent, 303fefc03bfSSteven Whitehouse extent_list); 304fefc03bfSSteven Whitehouse list_del(&jext->extent_list); 305fefc03bfSSteven Whitehouse kfree(jext); 306fefc03bfSSteven Whitehouse } 307fefc03bfSSteven Whitehouse list_del(&jd->jd_list); 308fefc03bfSSteven Whitehouse iput(jd->jd_inode); 309fefc03bfSSteven Whitehouse kfree(jd); 310fefc03bfSSteven Whitehouse } 311fefc03bfSSteven Whitehouse } 312fefc03bfSSteven Whitehouse 313b3b94faaSDavid Teigland static struct gfs2_jdesc *jdesc_find_i(struct list_head *head, unsigned int jid) 314b3b94faaSDavid Teigland { 315b3b94faaSDavid Teigland struct gfs2_jdesc *jd; 316b3b94faaSDavid Teigland int found = 0; 317b3b94faaSDavid Teigland 318b3b94faaSDavid Teigland list_for_each_entry(jd, head, jd_list) { 319b3b94faaSDavid Teigland if (jd->jd_jid == jid) { 320b3b94faaSDavid Teigland found = 1; 321b3b94faaSDavid Teigland break; 322b3b94faaSDavid Teigland } 323b3b94faaSDavid Teigland } 324b3b94faaSDavid Teigland 325b3b94faaSDavid Teigland if (!found) 326b3b94faaSDavid Teigland jd = NULL; 327b3b94faaSDavid Teigland 328b3b94faaSDavid Teigland return jd; 329b3b94faaSDavid Teigland } 330b3b94faaSDavid Teigland 331b3b94faaSDavid Teigland struct gfs2_jdesc *gfs2_jdesc_find(struct gfs2_sbd *sdp, unsigned int jid) 332b3b94faaSDavid Teigland { 333b3b94faaSDavid Teigland struct gfs2_jdesc *jd; 334b3b94faaSDavid Teigland 335b3b94faaSDavid Teigland spin_lock(&sdp->sd_jindex_spin); 336b3b94faaSDavid Teigland jd = jdesc_find_i(&sdp->sd_jindex_list, jid); 337b3b94faaSDavid Teigland spin_unlock(&sdp->sd_jindex_spin); 338b3b94faaSDavid Teigland 339b3b94faaSDavid Teigland return jd; 340b3b94faaSDavid Teigland } 341b3b94faaSDavid Teigland 342b3b94faaSDavid Teigland int gfs2_jdesc_check(struct gfs2_jdesc *jd) 343b3b94faaSDavid Teigland { 344feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 345feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 346a2e0f799SSteven Whitehouse u64 size = i_size_read(jd->jd_inode); 347b3b94faaSDavid Teigland 348a2e0f799SSteven Whitehouse if (gfs2_check_internal_file_size(jd->jd_inode, 8 << 20, 1 << 30)) 349b3b94faaSDavid Teigland return -EIO; 350b3b94faaSDavid Teigland 351a2e0f799SSteven Whitehouse jd->jd_blocks = size >> sdp->sd_sb.sb_bsize_shift; 352a2e0f799SSteven Whitehouse 353a2e0f799SSteven Whitehouse if (gfs2_write_alloc_required(ip, 0, size)) { 354b3b94faaSDavid Teigland gfs2_consist_inode(ip); 355461cb419SBob Peterson return -EIO; 356b3b94faaSDavid Teigland } 357b3b94faaSDavid Teigland 358461cb419SBob Peterson return 0; 359b3b94faaSDavid Teigland } 360b3b94faaSDavid Teigland 361b3b94faaSDavid Teigland /** 362b3b94faaSDavid Teigland * gfs2_make_fs_rw - Turn a Read-Only FS into a Read-Write one 363b3b94faaSDavid Teigland * @sdp: the filesystem 364b3b94faaSDavid Teigland * 365b3b94faaSDavid Teigland * Returns: errno 366b3b94faaSDavid Teigland */ 367b3b94faaSDavid Teigland 368b3b94faaSDavid Teigland int gfs2_make_fs_rw(struct gfs2_sbd *sdp) 369b3b94faaSDavid Teigland { 370feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); 3715c676f6dSSteven Whitehouse struct gfs2_glock *j_gl = ip->i_gl; 372b3b94faaSDavid Teigland struct gfs2_holder t_gh; 37355167622SAl Viro struct gfs2_log_header_host head; 374b3b94faaSDavid Teigland int error; 375b3b94faaSDavid Teigland 3761c0f4872SSteven Whitehouse error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, 0, &t_gh); 377b3b94faaSDavid Teigland if (error) 378b3b94faaSDavid Teigland return error; 379b3b94faaSDavid Teigland 3801a14d3a6SSteven Whitehouse j_gl->gl_ops->go_inval(j_gl, DIO_METADATA); 381b3b94faaSDavid Teigland 382b3b94faaSDavid Teigland error = gfs2_find_jhead(sdp->sd_jdesc, &head); 383b3b94faaSDavid Teigland if (error) 384b3b94faaSDavid Teigland goto fail; 385b3b94faaSDavid Teigland 386b3b94faaSDavid Teigland if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) { 387b3b94faaSDavid Teigland gfs2_consist(sdp); 388b3b94faaSDavid Teigland error = -EIO; 389b3b94faaSDavid Teigland goto fail; 390b3b94faaSDavid Teigland } 391b3b94faaSDavid Teigland 392b3b94faaSDavid Teigland /* Initialize some head of the log stuff */ 393b3b94faaSDavid Teigland sdp->sd_log_sequence = head.lh_sequence + 1; 394b3b94faaSDavid Teigland gfs2_log_pointers_init(sdp, head.lh_blkno); 395b3b94faaSDavid Teigland 396b3b94faaSDavid Teigland error = gfs2_quota_init(sdp); 397b3b94faaSDavid Teigland if (error) 398a91ea69fSSteven Whitehouse goto fail; 399b3b94faaSDavid Teigland 400b3b94faaSDavid Teigland set_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); 401b3b94faaSDavid Teigland 402b3b94faaSDavid Teigland gfs2_glock_dq_uninit(&t_gh); 403b3b94faaSDavid Teigland 404b3b94faaSDavid Teigland return 0; 405b3b94faaSDavid Teigland 406b3b94faaSDavid Teigland fail: 407b3b94faaSDavid Teigland t_gh.gh_flags |= GL_NOCACHE; 408b3b94faaSDavid Teigland gfs2_glock_dq_uninit(&t_gh); 409b3b94faaSDavid Teigland 410b3b94faaSDavid Teigland return error; 411b3b94faaSDavid Teigland } 412b3b94faaSDavid Teigland 4131946f70aSBenjamin Marzinski void gfs2_statfs_change_in(struct gfs2_statfs_change_host *sc, const void *buf) 414bb8d8a6fSSteven Whitehouse { 415bb8d8a6fSSteven Whitehouse const struct gfs2_statfs_change *str = buf; 416bb8d8a6fSSteven Whitehouse 417bb8d8a6fSSteven Whitehouse sc->sc_total = be64_to_cpu(str->sc_total); 418bb8d8a6fSSteven Whitehouse sc->sc_free = be64_to_cpu(str->sc_free); 419bb8d8a6fSSteven Whitehouse sc->sc_dinodes = be64_to_cpu(str->sc_dinodes); 420bb8d8a6fSSteven Whitehouse } 421bb8d8a6fSSteven Whitehouse 422bb8d8a6fSSteven Whitehouse static void gfs2_statfs_change_out(const struct gfs2_statfs_change_host *sc, void *buf) 423bb8d8a6fSSteven Whitehouse { 424bb8d8a6fSSteven Whitehouse struct gfs2_statfs_change *str = buf; 425bb8d8a6fSSteven Whitehouse 426bb8d8a6fSSteven Whitehouse str->sc_total = cpu_to_be64(sc->sc_total); 427bb8d8a6fSSteven Whitehouse str->sc_free = cpu_to_be64(sc->sc_free); 428bb8d8a6fSSteven Whitehouse str->sc_dinodes = cpu_to_be64(sc->sc_dinodes); 429bb8d8a6fSSteven Whitehouse } 430bb8d8a6fSSteven Whitehouse 431b3b94faaSDavid Teigland int gfs2_statfs_init(struct gfs2_sbd *sdp) 432b3b94faaSDavid Teigland { 433feaa7bbaSSteven Whitehouse struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode); 434bd209cc0SAl Viro struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; 435feaa7bbaSSteven Whitehouse struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); 436bd209cc0SAl Viro struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; 437b3b94faaSDavid Teigland struct buffer_head *m_bh, *l_bh; 438b3b94faaSDavid Teigland struct gfs2_holder gh; 439b3b94faaSDavid Teigland int error; 440b3b94faaSDavid Teigland 441b3b94faaSDavid Teigland error = gfs2_glock_nq_init(m_ip->i_gl, LM_ST_EXCLUSIVE, GL_NOCACHE, 442b3b94faaSDavid Teigland &gh); 443b3b94faaSDavid Teigland if (error) 444b3b94faaSDavid Teigland return error; 445b3b94faaSDavid Teigland 446b3b94faaSDavid Teigland error = gfs2_meta_inode_buffer(m_ip, &m_bh); 447b3b94faaSDavid Teigland if (error) 448b3b94faaSDavid Teigland goto out; 449b3b94faaSDavid Teigland 450b3b94faaSDavid Teigland if (sdp->sd_args.ar_spectator) { 451b3b94faaSDavid Teigland spin_lock(&sdp->sd_statfs_spin); 452b3b94faaSDavid Teigland gfs2_statfs_change_in(m_sc, m_bh->b_data + 453b3b94faaSDavid Teigland sizeof(struct gfs2_dinode)); 454b3b94faaSDavid Teigland spin_unlock(&sdp->sd_statfs_spin); 455b3b94faaSDavid Teigland } else { 456b3b94faaSDavid Teigland error = gfs2_meta_inode_buffer(l_ip, &l_bh); 457b3b94faaSDavid Teigland if (error) 458b3b94faaSDavid Teigland goto out_m_bh; 459b3b94faaSDavid Teigland 460b3b94faaSDavid Teigland spin_lock(&sdp->sd_statfs_spin); 461b3b94faaSDavid Teigland gfs2_statfs_change_in(m_sc, m_bh->b_data + 462b3b94faaSDavid Teigland sizeof(struct gfs2_dinode)); 463b3b94faaSDavid Teigland gfs2_statfs_change_in(l_sc, l_bh->b_data + 464b3b94faaSDavid Teigland sizeof(struct gfs2_dinode)); 465b3b94faaSDavid Teigland spin_unlock(&sdp->sd_statfs_spin); 466b3b94faaSDavid Teigland 467b3b94faaSDavid Teigland brelse(l_bh); 468b3b94faaSDavid Teigland } 469b3b94faaSDavid Teigland 470b3b94faaSDavid Teigland out_m_bh: 471b3b94faaSDavid Teigland brelse(m_bh); 472b3b94faaSDavid Teigland out: 473b3b94faaSDavid Teigland gfs2_glock_dq_uninit(&gh); 474b3b94faaSDavid Teigland return 0; 475b3b94faaSDavid Teigland } 476b3b94faaSDavid Teigland 477cd915493SSteven Whitehouse void gfs2_statfs_change(struct gfs2_sbd *sdp, s64 total, s64 free, 478cd915493SSteven Whitehouse s64 dinodes) 479b3b94faaSDavid Teigland { 480feaa7bbaSSteven Whitehouse struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); 481bd209cc0SAl Viro struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; 4823d3c10f2SBenjamin Marzinski struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; 483b3b94faaSDavid Teigland struct buffer_head *l_bh; 484c14f5735SBenjamin Marzinski s64 x, y; 485c14f5735SBenjamin Marzinski int need_sync = 0; 486b3b94faaSDavid Teigland int error; 487b3b94faaSDavid Teigland 488b3b94faaSDavid Teigland error = gfs2_meta_inode_buffer(l_ip, &l_bh); 489b3b94faaSDavid Teigland if (error) 490b3b94faaSDavid Teigland return; 491b3b94faaSDavid Teigland 492d4e9c4c3SSteven Whitehouse gfs2_trans_add_bh(l_ip->i_gl, l_bh, 1); 493b3b94faaSDavid Teigland 494b3b94faaSDavid Teigland spin_lock(&sdp->sd_statfs_spin); 495b3b94faaSDavid Teigland l_sc->sc_total += total; 496b3b94faaSDavid Teigland l_sc->sc_free += free; 497b3b94faaSDavid Teigland l_sc->sc_dinodes += dinodes; 498907b9bceSSteven Whitehouse gfs2_statfs_change_out(l_sc, l_bh->b_data + sizeof(struct gfs2_dinode)); 499c14f5735SBenjamin Marzinski if (sdp->sd_args.ar_statfs_percent) { 500c14f5735SBenjamin Marzinski x = 100 * l_sc->sc_free; 501c14f5735SBenjamin Marzinski y = m_sc->sc_free * sdp->sd_args.ar_statfs_percent; 502c14f5735SBenjamin Marzinski if (x >= y || x <= -y) 503c14f5735SBenjamin Marzinski need_sync = 1; 504c14f5735SBenjamin Marzinski } 505b3b94faaSDavid Teigland spin_unlock(&sdp->sd_statfs_spin); 506b3b94faaSDavid Teigland 507b3b94faaSDavid Teigland brelse(l_bh); 508c14f5735SBenjamin Marzinski if (need_sync) 5093d3c10f2SBenjamin Marzinski gfs2_wake_up_statfs(sdp); 510b3b94faaSDavid Teigland } 511b3b94faaSDavid Teigland 5121946f70aSBenjamin Marzinski void update_statfs(struct gfs2_sbd *sdp, struct buffer_head *m_bh, 5131946f70aSBenjamin Marzinski struct buffer_head *l_bh) 5141946f70aSBenjamin Marzinski { 5151946f70aSBenjamin Marzinski struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode); 5161946f70aSBenjamin Marzinski struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); 5171946f70aSBenjamin Marzinski struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; 5181946f70aSBenjamin Marzinski struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; 5191946f70aSBenjamin Marzinski 5201946f70aSBenjamin Marzinski gfs2_trans_add_bh(l_ip->i_gl, l_bh, 1); 5211946f70aSBenjamin Marzinski 5221946f70aSBenjamin Marzinski spin_lock(&sdp->sd_statfs_spin); 5231946f70aSBenjamin Marzinski m_sc->sc_total += l_sc->sc_total; 5241946f70aSBenjamin Marzinski m_sc->sc_free += l_sc->sc_free; 5251946f70aSBenjamin Marzinski m_sc->sc_dinodes += l_sc->sc_dinodes; 5261946f70aSBenjamin Marzinski memset(l_sc, 0, sizeof(struct gfs2_statfs_change)); 5271946f70aSBenjamin Marzinski memset(l_bh->b_data + sizeof(struct gfs2_dinode), 5281946f70aSBenjamin Marzinski 0, sizeof(struct gfs2_statfs_change)); 5291946f70aSBenjamin Marzinski spin_unlock(&sdp->sd_statfs_spin); 5301946f70aSBenjamin Marzinski 5311946f70aSBenjamin Marzinski gfs2_trans_add_bh(m_ip->i_gl, m_bh, 1); 5321946f70aSBenjamin Marzinski gfs2_statfs_change_out(m_sc, m_bh->b_data + sizeof(struct gfs2_dinode)); 5331946f70aSBenjamin Marzinski } 5341946f70aSBenjamin Marzinski 5358c42d637SSteven Whitehouse int gfs2_statfs_sync(struct super_block *sb, int type) 536b3b94faaSDavid Teigland { 5378c42d637SSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 538feaa7bbaSSteven Whitehouse struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode); 539feaa7bbaSSteven Whitehouse struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); 540bd209cc0SAl Viro struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; 541bd209cc0SAl Viro struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; 542b3b94faaSDavid Teigland struct gfs2_holder gh; 543b3b94faaSDavid Teigland struct buffer_head *m_bh, *l_bh; 544b3b94faaSDavid Teigland int error; 545b3b94faaSDavid Teigland 546b3b94faaSDavid Teigland error = gfs2_glock_nq_init(m_ip->i_gl, LM_ST_EXCLUSIVE, GL_NOCACHE, 547b3b94faaSDavid Teigland &gh); 548b3b94faaSDavid Teigland if (error) 549b3b94faaSDavid Teigland return error; 550b3b94faaSDavid Teigland 551b3b94faaSDavid Teigland error = gfs2_meta_inode_buffer(m_ip, &m_bh); 552b3b94faaSDavid Teigland if (error) 553b3b94faaSDavid Teigland goto out; 554b3b94faaSDavid Teigland 555b3b94faaSDavid Teigland spin_lock(&sdp->sd_statfs_spin); 556b3b94faaSDavid Teigland gfs2_statfs_change_in(m_sc, m_bh->b_data + 557b3b94faaSDavid Teigland sizeof(struct gfs2_dinode)); 558b3b94faaSDavid Teigland if (!l_sc->sc_total && !l_sc->sc_free && !l_sc->sc_dinodes) { 559b3b94faaSDavid Teigland spin_unlock(&sdp->sd_statfs_spin); 560b3b94faaSDavid Teigland goto out_bh; 561b3b94faaSDavid Teigland } 562b3b94faaSDavid Teigland spin_unlock(&sdp->sd_statfs_spin); 563b3b94faaSDavid Teigland 564b3b94faaSDavid Teigland error = gfs2_meta_inode_buffer(l_ip, &l_bh); 565b3b94faaSDavid Teigland if (error) 566b3b94faaSDavid Teigland goto out_bh; 567b3b94faaSDavid Teigland 568b3b94faaSDavid Teigland error = gfs2_trans_begin(sdp, 2 * RES_DINODE, 0); 569b3b94faaSDavid Teigland if (error) 570b3b94faaSDavid Teigland goto out_bh2; 571b3b94faaSDavid Teigland 5721946f70aSBenjamin Marzinski update_statfs(sdp, m_bh, l_bh); 5733d3c10f2SBenjamin Marzinski sdp->sd_statfs_force_sync = 0; 574b3b94faaSDavid Teigland 575b3b94faaSDavid Teigland gfs2_trans_end(sdp); 576b3b94faaSDavid Teigland 577b3b94faaSDavid Teigland out_bh2: 578b3b94faaSDavid Teigland brelse(l_bh); 579b3b94faaSDavid Teigland out_bh: 580b3b94faaSDavid Teigland brelse(m_bh); 581b3b94faaSDavid Teigland out: 582b3b94faaSDavid Teigland gfs2_glock_dq_uninit(&gh); 583b3b94faaSDavid Teigland return error; 584b3b94faaSDavid Teigland } 585b3b94faaSDavid Teigland 586b3b94faaSDavid Teigland struct lfcc { 587b3b94faaSDavid Teigland struct list_head list; 588b3b94faaSDavid Teigland struct gfs2_holder gh; 589b3b94faaSDavid Teigland }; 590b3b94faaSDavid Teigland 591b3b94faaSDavid Teigland /** 592b3b94faaSDavid Teigland * gfs2_lock_fs_check_clean - Stop all writes to the FS and check that all 593b3b94faaSDavid Teigland * journals are clean 594b3b94faaSDavid Teigland * @sdp: the file system 595b3b94faaSDavid Teigland * @state: the state to put the transaction lock into 596b3b94faaSDavid Teigland * @t_gh: the hold on the transaction lock 597b3b94faaSDavid Teigland * 598b3b94faaSDavid Teigland * Returns: errno 599b3b94faaSDavid Teigland */ 600b3b94faaSDavid Teigland 60108bc2dbcSAdrian Bunk static int gfs2_lock_fs_check_clean(struct gfs2_sbd *sdp, 60208bc2dbcSAdrian Bunk struct gfs2_holder *t_gh) 603b3b94faaSDavid Teigland { 6045c676f6dSSteven Whitehouse struct gfs2_inode *ip; 605b3b94faaSDavid Teigland struct gfs2_jdesc *jd; 606b3b94faaSDavid Teigland struct lfcc *lfcc; 607b3b94faaSDavid Teigland LIST_HEAD(list); 60855167622SAl Viro struct gfs2_log_header_host lh; 609b3b94faaSDavid Teigland int error; 610b3b94faaSDavid Teigland 611b3b94faaSDavid Teigland list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { 612b3b94faaSDavid Teigland lfcc = kmalloc(sizeof(struct lfcc), GFP_KERNEL); 613b3b94faaSDavid Teigland if (!lfcc) { 614b3b94faaSDavid Teigland error = -ENOMEM; 615b3b94faaSDavid Teigland goto out; 616b3b94faaSDavid Teigland } 617feaa7bbaSSteven Whitehouse ip = GFS2_I(jd->jd_inode); 618feaa7bbaSSteven Whitehouse error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &lfcc->gh); 619b3b94faaSDavid Teigland if (error) { 620b3b94faaSDavid Teigland kfree(lfcc); 621b3b94faaSDavid Teigland goto out; 622b3b94faaSDavid Teigland } 623b3b94faaSDavid Teigland list_add(&lfcc->list, &list); 624b3b94faaSDavid Teigland } 625b3b94faaSDavid Teigland 626b3b94faaSDavid Teigland error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_DEFERRED, 6276802e340SSteven Whitehouse GL_NOCACHE, t_gh); 628b3b94faaSDavid Teigland 629b3b94faaSDavid Teigland list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { 630b3b94faaSDavid Teigland error = gfs2_jdesc_check(jd); 631b3b94faaSDavid Teigland if (error) 632b3b94faaSDavid Teigland break; 633b3b94faaSDavid Teigland error = gfs2_find_jhead(jd, &lh); 634b3b94faaSDavid Teigland if (error) 635b3b94faaSDavid Teigland break; 636b3b94faaSDavid Teigland if (!(lh.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) { 637b3b94faaSDavid Teigland error = -EBUSY; 638b3b94faaSDavid Teigland break; 639b3b94faaSDavid Teigland } 640b3b94faaSDavid Teigland } 641b3b94faaSDavid Teigland 642b3b94faaSDavid Teigland if (error) 643b3b94faaSDavid Teigland gfs2_glock_dq_uninit(t_gh); 644b3b94faaSDavid Teigland 645b3b94faaSDavid Teigland out: 646b3b94faaSDavid Teigland while (!list_empty(&list)) { 647b3b94faaSDavid Teigland lfcc = list_entry(list.next, struct lfcc, list); 648b3b94faaSDavid Teigland list_del(&lfcc->list); 649b3b94faaSDavid Teigland gfs2_glock_dq_uninit(&lfcc->gh); 650b3b94faaSDavid Teigland kfree(lfcc); 651b3b94faaSDavid Teigland } 652b3b94faaSDavid Teigland return error; 653b3b94faaSDavid Teigland } 654b3b94faaSDavid Teigland 655b3b94faaSDavid Teigland /** 656b3b94faaSDavid Teigland * gfs2_freeze_fs - freezes the file system 657b3b94faaSDavid Teigland * @sdp: the file system 658b3b94faaSDavid Teigland * 659b3b94faaSDavid Teigland * This function flushes data and meta data for all machines by 66025985edcSLucas De Marchi * acquiring the transaction log exclusively. All journals are 661b3b94faaSDavid Teigland * ensured to be in a clean state as well. 662b3b94faaSDavid Teigland * 663b3b94faaSDavid Teigland * Returns: errno 664b3b94faaSDavid Teigland */ 665b3b94faaSDavid Teigland 666b3b94faaSDavid Teigland int gfs2_freeze_fs(struct gfs2_sbd *sdp) 667b3b94faaSDavid Teigland { 668b3b94faaSDavid Teigland int error = 0; 669b3b94faaSDavid Teigland 670f55ab26aSSteven Whitehouse mutex_lock(&sdp->sd_freeze_lock); 671b3b94faaSDavid Teigland 672b3b94faaSDavid Teigland if (!sdp->sd_freeze_count++) { 673b3b94faaSDavid Teigland error = gfs2_lock_fs_check_clean(sdp, &sdp->sd_freeze_gh); 674b3b94faaSDavid Teigland if (error) 675b3b94faaSDavid Teigland sdp->sd_freeze_count--; 676b3b94faaSDavid Teigland } 677b3b94faaSDavid Teigland 678f55ab26aSSteven Whitehouse mutex_unlock(&sdp->sd_freeze_lock); 679b3b94faaSDavid Teigland 680b3b94faaSDavid Teigland return error; 681b3b94faaSDavid Teigland } 682b3b94faaSDavid Teigland 683b3b94faaSDavid Teigland /** 684b3b94faaSDavid Teigland * gfs2_unfreeze_fs - unfreezes the file system 685b3b94faaSDavid Teigland * @sdp: the file system 686b3b94faaSDavid Teigland * 687b3b94faaSDavid Teigland * This function allows the file system to proceed by unlocking 688b3b94faaSDavid Teigland * the exclusively held transaction lock. Other GFS2 nodes are 689b3b94faaSDavid Teigland * now free to acquire the lock shared and go on with their lives. 690b3b94faaSDavid Teigland * 691b3b94faaSDavid Teigland */ 692b3b94faaSDavid Teigland 693b3b94faaSDavid Teigland void gfs2_unfreeze_fs(struct gfs2_sbd *sdp) 694b3b94faaSDavid Teigland { 695f55ab26aSSteven Whitehouse mutex_lock(&sdp->sd_freeze_lock); 696b3b94faaSDavid Teigland 697b3b94faaSDavid Teigland if (sdp->sd_freeze_count && !--sdp->sd_freeze_count) 698b3b94faaSDavid Teigland gfs2_glock_dq_uninit(&sdp->sd_freeze_gh); 699b3b94faaSDavid Teigland 700f55ab26aSSteven Whitehouse mutex_unlock(&sdp->sd_freeze_lock); 701b3b94faaSDavid Teigland } 702b3b94faaSDavid Teigland 7039e6e0a12SSteven Whitehouse 7049e6e0a12SSteven Whitehouse /** 7059e6e0a12SSteven Whitehouse * gfs2_write_inode - Make sure the inode is stable on the disk 7069e6e0a12SSteven Whitehouse * @inode: The inode 7079e6e0a12SSteven Whitehouse * @sync: synchronous write flag 7089e6e0a12SSteven Whitehouse * 7099e6e0a12SSteven Whitehouse * Returns: errno 7109e6e0a12SSteven Whitehouse */ 7119e6e0a12SSteven Whitehouse 712a9185b41SChristoph Hellwig static int gfs2_write_inode(struct inode *inode, struct writeback_control *wbc) 7139e6e0a12SSteven Whitehouse { 7149e6e0a12SSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 7159e6e0a12SSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(inode); 7169e6e0a12SSteven Whitehouse struct gfs2_holder gh; 7179e6e0a12SSteven Whitehouse struct buffer_head *bh; 7189e6e0a12SSteven Whitehouse struct timespec atime; 7199e6e0a12SSteven Whitehouse struct gfs2_dinode *di; 7209e6e0a12SSteven Whitehouse int ret = 0; 7219e6e0a12SSteven Whitehouse 7229e6e0a12SSteven Whitehouse /* Check this is a "normal" inode, etc */ 723009d8518SSteven Whitehouse if (current->flags & PF_MEMALLOC) 7249e6e0a12SSteven Whitehouse return 0; 7259e6e0a12SSteven Whitehouse ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh); 7269e6e0a12SSteven Whitehouse if (ret) 7279e6e0a12SSteven Whitehouse goto do_flush; 7289e6e0a12SSteven Whitehouse ret = gfs2_trans_begin(sdp, RES_DINODE, 0); 7299e6e0a12SSteven Whitehouse if (ret) 7309e6e0a12SSteven Whitehouse goto do_unlock; 7319e6e0a12SSteven Whitehouse ret = gfs2_meta_inode_buffer(ip, &bh); 7329e6e0a12SSteven Whitehouse if (ret == 0) { 7339e6e0a12SSteven Whitehouse di = (struct gfs2_dinode *)bh->b_data; 7349e6e0a12SSteven Whitehouse atime.tv_sec = be64_to_cpu(di->di_atime); 7359e6e0a12SSteven Whitehouse atime.tv_nsec = be32_to_cpu(di->di_atime_nsec); 7369e6e0a12SSteven Whitehouse if (timespec_compare(&inode->i_atime, &atime) > 0) { 7379e6e0a12SSteven Whitehouse gfs2_trans_add_bh(ip->i_gl, bh, 1); 7389e6e0a12SSteven Whitehouse gfs2_dinode_out(ip, bh->b_data); 7399e6e0a12SSteven Whitehouse } 7409e6e0a12SSteven Whitehouse brelse(bh); 7419e6e0a12SSteven Whitehouse } 7429e6e0a12SSteven Whitehouse gfs2_trans_end(sdp); 7439e6e0a12SSteven Whitehouse do_unlock: 7449e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&gh); 7459e6e0a12SSteven Whitehouse do_flush: 746a9185b41SChristoph Hellwig if (wbc->sync_mode == WB_SYNC_ALL) 7479e6e0a12SSteven Whitehouse gfs2_log_flush(GFS2_SB(inode), ip->i_gl); 7489e6e0a12SSteven Whitehouse return ret; 7499e6e0a12SSteven Whitehouse } 7509e6e0a12SSteven Whitehouse 7519e6e0a12SSteven Whitehouse /** 7529e6e0a12SSteven Whitehouse * gfs2_make_fs_ro - Turn a Read-Write FS into a Read-Only one 7539e6e0a12SSteven Whitehouse * @sdp: the filesystem 7549e6e0a12SSteven Whitehouse * 7559e6e0a12SSteven Whitehouse * Returns: errno 7569e6e0a12SSteven Whitehouse */ 7579e6e0a12SSteven Whitehouse 7589e6e0a12SSteven Whitehouse static int gfs2_make_fs_ro(struct gfs2_sbd *sdp) 7599e6e0a12SSteven Whitehouse { 7609e6e0a12SSteven Whitehouse struct gfs2_holder t_gh; 7619e6e0a12SSteven Whitehouse int error; 7629e6e0a12SSteven Whitehouse 763b94a170eSBenjamin Marzinski flush_workqueue(gfs2_delete_workqueue); 7645fb324adSChristoph Hellwig gfs2_quota_sync(sdp->sd_vfs, 0, 1); 7658c42d637SSteven Whitehouse gfs2_statfs_sync(sdp->sd_vfs, 0); 7669e6e0a12SSteven Whitehouse 7679e6e0a12SSteven Whitehouse error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, GL_NOCACHE, 7689e6e0a12SSteven Whitehouse &t_gh); 7699e6e0a12SSteven Whitehouse if (error && !test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) 7709e6e0a12SSteven Whitehouse return error; 7719e6e0a12SSteven Whitehouse 7729e6e0a12SSteven Whitehouse gfs2_meta_syncfs(sdp); 7739e6e0a12SSteven Whitehouse gfs2_log_shutdown(sdp); 7749e6e0a12SSteven Whitehouse 7759e6e0a12SSteven Whitehouse clear_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); 7769e6e0a12SSteven Whitehouse 7779e6e0a12SSteven Whitehouse if (t_gh.gh_gl) 7789e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&t_gh); 7799e6e0a12SSteven Whitehouse 7809e6e0a12SSteven Whitehouse gfs2_quota_cleanup(sdp); 7819e6e0a12SSteven Whitehouse 7829e6e0a12SSteven Whitehouse return error; 7839e6e0a12SSteven Whitehouse } 7849e6e0a12SSteven Whitehouse 7859e6e0a12SSteven Whitehouse static int gfs2_umount_recovery_wait(void *word) 7869e6e0a12SSteven Whitehouse { 7879e6e0a12SSteven Whitehouse schedule(); 7889e6e0a12SSteven Whitehouse return 0; 7899e6e0a12SSteven Whitehouse } 7909e6e0a12SSteven Whitehouse 7919e6e0a12SSteven Whitehouse /** 7929e6e0a12SSteven Whitehouse * gfs2_put_super - Unmount the filesystem 7939e6e0a12SSteven Whitehouse * @sb: The VFS superblock 7949e6e0a12SSteven Whitehouse * 7959e6e0a12SSteven Whitehouse */ 7969e6e0a12SSteven Whitehouse 7979e6e0a12SSteven Whitehouse static void gfs2_put_super(struct super_block *sb) 7989e6e0a12SSteven Whitehouse { 7999e6e0a12SSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 8009e6e0a12SSteven Whitehouse int error; 8019e6e0a12SSteven Whitehouse struct gfs2_jdesc *jd; 8029e6e0a12SSteven Whitehouse 8039e6e0a12SSteven Whitehouse /* Unfreeze the filesystem, if we need to */ 8049e6e0a12SSteven Whitehouse 8059e6e0a12SSteven Whitehouse mutex_lock(&sdp->sd_freeze_lock); 8069e6e0a12SSteven Whitehouse if (sdp->sd_freeze_count) 8079e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&sdp->sd_freeze_gh); 8089e6e0a12SSteven Whitehouse mutex_unlock(&sdp->sd_freeze_lock); 8099e6e0a12SSteven Whitehouse 8109e6e0a12SSteven Whitehouse /* No more recovery requests */ 8119e6e0a12SSteven Whitehouse set_bit(SDF_NORECOVERY, &sdp->sd_flags); 8129e6e0a12SSteven Whitehouse smp_mb(); 8139e6e0a12SSteven Whitehouse 8149e6e0a12SSteven Whitehouse /* Wait on outstanding recovery */ 8159e6e0a12SSteven Whitehouse restart: 8169e6e0a12SSteven Whitehouse spin_lock(&sdp->sd_jindex_spin); 8179e6e0a12SSteven Whitehouse list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { 8189e6e0a12SSteven Whitehouse if (!test_bit(JDF_RECOVERY, &jd->jd_flags)) 8199e6e0a12SSteven Whitehouse continue; 8209e6e0a12SSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 8219e6e0a12SSteven Whitehouse wait_on_bit(&jd->jd_flags, JDF_RECOVERY, 8229e6e0a12SSteven Whitehouse gfs2_umount_recovery_wait, TASK_UNINTERRUPTIBLE); 8239e6e0a12SSteven Whitehouse goto restart; 8249e6e0a12SSteven Whitehouse } 8259e6e0a12SSteven Whitehouse spin_unlock(&sdp->sd_jindex_spin); 8269e6e0a12SSteven Whitehouse 8279e6e0a12SSteven Whitehouse kthread_stop(sdp->sd_quotad_process); 8289e6e0a12SSteven Whitehouse kthread_stop(sdp->sd_logd_process); 8299e6e0a12SSteven Whitehouse 8309e6e0a12SSteven Whitehouse if (!(sb->s_flags & MS_RDONLY)) { 8319e6e0a12SSteven Whitehouse error = gfs2_make_fs_ro(sdp); 8329e6e0a12SSteven Whitehouse if (error) 8339e6e0a12SSteven Whitehouse gfs2_io_error(sdp); 8349e6e0a12SSteven Whitehouse } 8359e6e0a12SSteven Whitehouse /* At this point, we're through modifying the disk */ 8369e6e0a12SSteven Whitehouse 8379e6e0a12SSteven Whitehouse /* Release stuff */ 8389e6e0a12SSteven Whitehouse 8399e6e0a12SSteven Whitehouse iput(sdp->sd_jindex); 8409e6e0a12SSteven Whitehouse iput(sdp->sd_statfs_inode); 8419e6e0a12SSteven Whitehouse iput(sdp->sd_rindex); 8429e6e0a12SSteven Whitehouse iput(sdp->sd_quota_inode); 8439e6e0a12SSteven Whitehouse 8449e6e0a12SSteven Whitehouse gfs2_glock_put(sdp->sd_rename_gl); 8459e6e0a12SSteven Whitehouse gfs2_glock_put(sdp->sd_trans_gl); 8469e6e0a12SSteven Whitehouse 8479e6e0a12SSteven Whitehouse if (!sdp->sd_args.ar_spectator) { 8489e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&sdp->sd_journal_gh); 8499e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); 8509e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&sdp->sd_sc_gh); 8519e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&sdp->sd_qc_gh); 8529e6e0a12SSteven Whitehouse iput(sdp->sd_sc_inode); 8539e6e0a12SSteven Whitehouse iput(sdp->sd_qc_inode); 8549e6e0a12SSteven Whitehouse } 8559e6e0a12SSteven Whitehouse 8569e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&sdp->sd_live_gh); 8579e6e0a12SSteven Whitehouse gfs2_clear_rgrpd(sdp); 8589e6e0a12SSteven Whitehouse gfs2_jindex_free(sdp); 8599e6e0a12SSteven Whitehouse /* Take apart glock structures and buffer lists */ 8609e6e0a12SSteven Whitehouse gfs2_gl_hash_clear(sdp); 8619e6e0a12SSteven Whitehouse /* Unmount the locking protocol */ 8629e6e0a12SSteven Whitehouse gfs2_lm_unmount(sdp); 8639e6e0a12SSteven Whitehouse 8649e6e0a12SSteven Whitehouse /* At this point, we're through participating in the lockspace */ 8659e6e0a12SSteven Whitehouse gfs2_sys_fs_del(sdp); 8669e6e0a12SSteven Whitehouse } 8679e6e0a12SSteven Whitehouse 8689e6e0a12SSteven Whitehouse /** 8699e6e0a12SSteven Whitehouse * gfs2_sync_fs - sync the filesystem 8709e6e0a12SSteven Whitehouse * @sb: the superblock 8719e6e0a12SSteven Whitehouse * 8729e6e0a12SSteven Whitehouse * Flushes the log to disk. 8739e6e0a12SSteven Whitehouse */ 8749e6e0a12SSteven Whitehouse 8759e6e0a12SSteven Whitehouse static int gfs2_sync_fs(struct super_block *sb, int wait) 8769e6e0a12SSteven Whitehouse { 8779e6e0a12SSteven Whitehouse if (wait && sb->s_fs_info) 8789e6e0a12SSteven Whitehouse gfs2_log_flush(sb->s_fs_info, NULL); 8799e6e0a12SSteven Whitehouse return 0; 8809e6e0a12SSteven Whitehouse } 8819e6e0a12SSteven Whitehouse 8829e6e0a12SSteven Whitehouse /** 8839e6e0a12SSteven Whitehouse * gfs2_freeze - prevent further writes to the filesystem 8849e6e0a12SSteven Whitehouse * @sb: the VFS structure for the filesystem 8859e6e0a12SSteven Whitehouse * 8869e6e0a12SSteven Whitehouse */ 8879e6e0a12SSteven Whitehouse 8889e6e0a12SSteven Whitehouse static int gfs2_freeze(struct super_block *sb) 8899e6e0a12SSteven Whitehouse { 8909e6e0a12SSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 8919e6e0a12SSteven Whitehouse int error; 8929e6e0a12SSteven Whitehouse 8939e6e0a12SSteven Whitehouse if (test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) 8949e6e0a12SSteven Whitehouse return -EINVAL; 8959e6e0a12SSteven Whitehouse 8969e6e0a12SSteven Whitehouse for (;;) { 8979e6e0a12SSteven Whitehouse error = gfs2_freeze_fs(sdp); 8989e6e0a12SSteven Whitehouse if (!error) 8999e6e0a12SSteven Whitehouse break; 9009e6e0a12SSteven Whitehouse 9019e6e0a12SSteven Whitehouse switch (error) { 9029e6e0a12SSteven Whitehouse case -EBUSY: 9039e6e0a12SSteven Whitehouse fs_err(sdp, "waiting for recovery before freeze\n"); 9049e6e0a12SSteven Whitehouse break; 9059e6e0a12SSteven Whitehouse 9069e6e0a12SSteven Whitehouse default: 9079e6e0a12SSteven Whitehouse fs_err(sdp, "error freezing FS: %d\n", error); 9089e6e0a12SSteven Whitehouse break; 9099e6e0a12SSteven Whitehouse } 9109e6e0a12SSteven Whitehouse 9119e6e0a12SSteven Whitehouse fs_err(sdp, "retrying...\n"); 9129e6e0a12SSteven Whitehouse msleep(1000); 9139e6e0a12SSteven Whitehouse } 9149e6e0a12SSteven Whitehouse return 0; 9159e6e0a12SSteven Whitehouse } 9169e6e0a12SSteven Whitehouse 9179e6e0a12SSteven Whitehouse /** 9189e6e0a12SSteven Whitehouse * gfs2_unfreeze - reallow writes to the filesystem 9199e6e0a12SSteven Whitehouse * @sb: the VFS structure for the filesystem 9209e6e0a12SSteven Whitehouse * 9219e6e0a12SSteven Whitehouse */ 9229e6e0a12SSteven Whitehouse 9239e6e0a12SSteven Whitehouse static int gfs2_unfreeze(struct super_block *sb) 9249e6e0a12SSteven Whitehouse { 9259e6e0a12SSteven Whitehouse gfs2_unfreeze_fs(sb->s_fs_info); 9269e6e0a12SSteven Whitehouse return 0; 9279e6e0a12SSteven Whitehouse } 9289e6e0a12SSteven Whitehouse 9299e6e0a12SSteven Whitehouse /** 9309e6e0a12SSteven Whitehouse * statfs_fill - fill in the sg for a given RG 9319e6e0a12SSteven Whitehouse * @rgd: the RG 9329e6e0a12SSteven Whitehouse * @sc: the sc structure 9339e6e0a12SSteven Whitehouse * 9349e6e0a12SSteven Whitehouse * Returns: 0 on success, -ESTALE if the LVB is invalid 9359e6e0a12SSteven Whitehouse */ 9369e6e0a12SSteven Whitehouse 9379e6e0a12SSteven Whitehouse static int statfs_slow_fill(struct gfs2_rgrpd *rgd, 9389e6e0a12SSteven Whitehouse struct gfs2_statfs_change_host *sc) 9399e6e0a12SSteven Whitehouse { 9409e6e0a12SSteven Whitehouse gfs2_rgrp_verify(rgd); 9419e6e0a12SSteven Whitehouse sc->sc_total += rgd->rd_data; 9429e6e0a12SSteven Whitehouse sc->sc_free += rgd->rd_free; 9439e6e0a12SSteven Whitehouse sc->sc_dinodes += rgd->rd_dinodes; 9449e6e0a12SSteven Whitehouse return 0; 9459e6e0a12SSteven Whitehouse } 9469e6e0a12SSteven Whitehouse 9479e6e0a12SSteven Whitehouse /** 9489e6e0a12SSteven Whitehouse * gfs2_statfs_slow - Stat a filesystem using asynchronous locking 9499e6e0a12SSteven Whitehouse * @sdp: the filesystem 9509e6e0a12SSteven Whitehouse * @sc: the sc info that will be returned 9519e6e0a12SSteven Whitehouse * 9529e6e0a12SSteven Whitehouse * Any error (other than a signal) will cause this routine to fall back 9539e6e0a12SSteven Whitehouse * to the synchronous version. 9549e6e0a12SSteven Whitehouse * 9559e6e0a12SSteven Whitehouse * FIXME: This really shouldn't busy wait like this. 9569e6e0a12SSteven Whitehouse * 9579e6e0a12SSteven Whitehouse * Returns: errno 9589e6e0a12SSteven Whitehouse */ 9599e6e0a12SSteven Whitehouse 9609e6e0a12SSteven Whitehouse static int gfs2_statfs_slow(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc) 9619e6e0a12SSteven Whitehouse { 9629e6e0a12SSteven Whitehouse struct gfs2_holder ri_gh; 9639e6e0a12SSteven Whitehouse struct gfs2_rgrpd *rgd_next; 9649e6e0a12SSteven Whitehouse struct gfs2_holder *gha, *gh; 9659e6e0a12SSteven Whitehouse unsigned int slots = 64; 9669e6e0a12SSteven Whitehouse unsigned int x; 9679e6e0a12SSteven Whitehouse int done; 9689e6e0a12SSteven Whitehouse int error = 0, err; 9699e6e0a12SSteven Whitehouse 9709e6e0a12SSteven Whitehouse memset(sc, 0, sizeof(struct gfs2_statfs_change_host)); 9719e6e0a12SSteven Whitehouse gha = kcalloc(slots, sizeof(struct gfs2_holder), GFP_KERNEL); 9729e6e0a12SSteven Whitehouse if (!gha) 9739e6e0a12SSteven Whitehouse return -ENOMEM; 9749e6e0a12SSteven Whitehouse 9759e6e0a12SSteven Whitehouse error = gfs2_rindex_hold(sdp, &ri_gh); 9769e6e0a12SSteven Whitehouse if (error) 9779e6e0a12SSteven Whitehouse goto out; 9789e6e0a12SSteven Whitehouse 9799e6e0a12SSteven Whitehouse rgd_next = gfs2_rgrpd_get_first(sdp); 9809e6e0a12SSteven Whitehouse 9819e6e0a12SSteven Whitehouse for (;;) { 9829e6e0a12SSteven Whitehouse done = 1; 9839e6e0a12SSteven Whitehouse 9849e6e0a12SSteven Whitehouse for (x = 0; x < slots; x++) { 9859e6e0a12SSteven Whitehouse gh = gha + x; 9869e6e0a12SSteven Whitehouse 9879e6e0a12SSteven Whitehouse if (gh->gh_gl && gfs2_glock_poll(gh)) { 9889e6e0a12SSteven Whitehouse err = gfs2_glock_wait(gh); 9899e6e0a12SSteven Whitehouse if (err) { 9909e6e0a12SSteven Whitehouse gfs2_holder_uninit(gh); 9919e6e0a12SSteven Whitehouse error = err; 9929e6e0a12SSteven Whitehouse } else { 9939e6e0a12SSteven Whitehouse if (!error) 9949e6e0a12SSteven Whitehouse error = statfs_slow_fill( 9959e6e0a12SSteven Whitehouse gh->gh_gl->gl_object, sc); 9969e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(gh); 9979e6e0a12SSteven Whitehouse } 9989e6e0a12SSteven Whitehouse } 9999e6e0a12SSteven Whitehouse 10009e6e0a12SSteven Whitehouse if (gh->gh_gl) 10019e6e0a12SSteven Whitehouse done = 0; 10029e6e0a12SSteven Whitehouse else if (rgd_next && !error) { 10039e6e0a12SSteven Whitehouse error = gfs2_glock_nq_init(rgd_next->rd_gl, 10049e6e0a12SSteven Whitehouse LM_ST_SHARED, 10059e6e0a12SSteven Whitehouse GL_ASYNC, 10069e6e0a12SSteven Whitehouse gh); 10079e6e0a12SSteven Whitehouse rgd_next = gfs2_rgrpd_get_next(rgd_next); 10089e6e0a12SSteven Whitehouse done = 0; 10099e6e0a12SSteven Whitehouse } 10109e6e0a12SSteven Whitehouse 10119e6e0a12SSteven Whitehouse if (signal_pending(current)) 10129e6e0a12SSteven Whitehouse error = -ERESTARTSYS; 10139e6e0a12SSteven Whitehouse } 10149e6e0a12SSteven Whitehouse 10159e6e0a12SSteven Whitehouse if (done) 10169e6e0a12SSteven Whitehouse break; 10179e6e0a12SSteven Whitehouse 10189e6e0a12SSteven Whitehouse yield(); 10199e6e0a12SSteven Whitehouse } 10209e6e0a12SSteven Whitehouse 10219e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&ri_gh); 10229e6e0a12SSteven Whitehouse 10239e6e0a12SSteven Whitehouse out: 10249e6e0a12SSteven Whitehouse kfree(gha); 10259e6e0a12SSteven Whitehouse return error; 10269e6e0a12SSteven Whitehouse } 10279e6e0a12SSteven Whitehouse 10289e6e0a12SSteven Whitehouse /** 10299e6e0a12SSteven Whitehouse * gfs2_statfs_i - Do a statfs 10309e6e0a12SSteven Whitehouse * @sdp: the filesystem 10319e6e0a12SSteven Whitehouse * @sg: the sg structure 10329e6e0a12SSteven Whitehouse * 10339e6e0a12SSteven Whitehouse * Returns: errno 10349e6e0a12SSteven Whitehouse */ 10359e6e0a12SSteven Whitehouse 10369e6e0a12SSteven Whitehouse static int gfs2_statfs_i(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc) 10379e6e0a12SSteven Whitehouse { 10389e6e0a12SSteven Whitehouse struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; 10399e6e0a12SSteven Whitehouse struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; 10409e6e0a12SSteven Whitehouse 10419e6e0a12SSteven Whitehouse spin_lock(&sdp->sd_statfs_spin); 10429e6e0a12SSteven Whitehouse 10439e6e0a12SSteven Whitehouse *sc = *m_sc; 10449e6e0a12SSteven Whitehouse sc->sc_total += l_sc->sc_total; 10459e6e0a12SSteven Whitehouse sc->sc_free += l_sc->sc_free; 10469e6e0a12SSteven Whitehouse sc->sc_dinodes += l_sc->sc_dinodes; 10479e6e0a12SSteven Whitehouse 10489e6e0a12SSteven Whitehouse spin_unlock(&sdp->sd_statfs_spin); 10499e6e0a12SSteven Whitehouse 10509e6e0a12SSteven Whitehouse if (sc->sc_free < 0) 10519e6e0a12SSteven Whitehouse sc->sc_free = 0; 10529e6e0a12SSteven Whitehouse if (sc->sc_free > sc->sc_total) 10539e6e0a12SSteven Whitehouse sc->sc_free = sc->sc_total; 10549e6e0a12SSteven Whitehouse if (sc->sc_dinodes < 0) 10559e6e0a12SSteven Whitehouse sc->sc_dinodes = 0; 10569e6e0a12SSteven Whitehouse 10579e6e0a12SSteven Whitehouse return 0; 10589e6e0a12SSteven Whitehouse } 10599e6e0a12SSteven Whitehouse 10609e6e0a12SSteven Whitehouse /** 10619e6e0a12SSteven Whitehouse * gfs2_statfs - Gather and return stats about the filesystem 10629e6e0a12SSteven Whitehouse * @sb: The superblock 10639e6e0a12SSteven Whitehouse * @statfsbuf: The buffer 10649e6e0a12SSteven Whitehouse * 10659e6e0a12SSteven Whitehouse * Returns: 0 on success or error code 10669e6e0a12SSteven Whitehouse */ 10679e6e0a12SSteven Whitehouse 10689e6e0a12SSteven Whitehouse static int gfs2_statfs(struct dentry *dentry, struct kstatfs *buf) 10699e6e0a12SSteven Whitehouse { 10709e6e0a12SSteven Whitehouse struct super_block *sb = dentry->d_inode->i_sb; 10719e6e0a12SSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 10729e6e0a12SSteven Whitehouse struct gfs2_statfs_change_host sc; 10739e6e0a12SSteven Whitehouse int error; 10749e6e0a12SSteven Whitehouse 10759e6e0a12SSteven Whitehouse if (gfs2_tune_get(sdp, gt_statfs_slow)) 10769e6e0a12SSteven Whitehouse error = gfs2_statfs_slow(sdp, &sc); 10779e6e0a12SSteven Whitehouse else 10789e6e0a12SSteven Whitehouse error = gfs2_statfs_i(sdp, &sc); 10799e6e0a12SSteven Whitehouse 10809e6e0a12SSteven Whitehouse if (error) 10819e6e0a12SSteven Whitehouse return error; 10829e6e0a12SSteven Whitehouse 10839e6e0a12SSteven Whitehouse buf->f_type = GFS2_MAGIC; 10849e6e0a12SSteven Whitehouse buf->f_bsize = sdp->sd_sb.sb_bsize; 10859e6e0a12SSteven Whitehouse buf->f_blocks = sc.sc_total; 10869e6e0a12SSteven Whitehouse buf->f_bfree = sc.sc_free; 10879e6e0a12SSteven Whitehouse buf->f_bavail = sc.sc_free; 10889e6e0a12SSteven Whitehouse buf->f_files = sc.sc_dinodes + sc.sc_free; 10899e6e0a12SSteven Whitehouse buf->f_ffree = sc.sc_free; 10909e6e0a12SSteven Whitehouse buf->f_namelen = GFS2_FNAMESIZE; 10919e6e0a12SSteven Whitehouse 10929e6e0a12SSteven Whitehouse return 0; 10939e6e0a12SSteven Whitehouse } 10949e6e0a12SSteven Whitehouse 10959e6e0a12SSteven Whitehouse /** 10969e6e0a12SSteven Whitehouse * gfs2_remount_fs - called when the FS is remounted 10979e6e0a12SSteven Whitehouse * @sb: the filesystem 10989e6e0a12SSteven Whitehouse * @flags: the remount flags 10999e6e0a12SSteven Whitehouse * @data: extra data passed in (not used right now) 11009e6e0a12SSteven Whitehouse * 11019e6e0a12SSteven Whitehouse * Returns: errno 11029e6e0a12SSteven Whitehouse */ 11039e6e0a12SSteven Whitehouse 11049e6e0a12SSteven Whitehouse static int gfs2_remount_fs(struct super_block *sb, int *flags, char *data) 11059e6e0a12SSteven Whitehouse { 11069e6e0a12SSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 11079e6e0a12SSteven Whitehouse struct gfs2_args args = sdp->sd_args; /* Default to current settings */ 11089e6e0a12SSteven Whitehouse struct gfs2_tune *gt = &sdp->sd_tune; 11099e6e0a12SSteven Whitehouse int error; 11109e6e0a12SSteven Whitehouse 11119e6e0a12SSteven Whitehouse spin_lock(>->gt_spin); 11125e687eacSBenjamin Marzinski args.ar_commit = gt->gt_logd_secs; 11133d3c10f2SBenjamin Marzinski args.ar_quota_quantum = gt->gt_quota_quantum; 11143d3c10f2SBenjamin Marzinski if (gt->gt_statfs_slow) 11153d3c10f2SBenjamin Marzinski args.ar_statfs_quantum = 0; 11163d3c10f2SBenjamin Marzinski else 11173d3c10f2SBenjamin Marzinski args.ar_statfs_quantum = gt->gt_statfs_quantum; 11189e6e0a12SSteven Whitehouse spin_unlock(>->gt_spin); 1119f55073ffSSteven Whitehouse error = gfs2_mount_args(&args, data); 11209e6e0a12SSteven Whitehouse if (error) 11219e6e0a12SSteven Whitehouse return error; 11229e6e0a12SSteven Whitehouse 11239e6e0a12SSteven Whitehouse /* Not allowed to change locking details */ 11249e6e0a12SSteven Whitehouse if (strcmp(args.ar_lockproto, sdp->sd_args.ar_lockproto) || 11259e6e0a12SSteven Whitehouse strcmp(args.ar_locktable, sdp->sd_args.ar_locktable) || 11269e6e0a12SSteven Whitehouse strcmp(args.ar_hostdata, sdp->sd_args.ar_hostdata)) 11279e6e0a12SSteven Whitehouse return -EINVAL; 11289e6e0a12SSteven Whitehouse 11299e6e0a12SSteven Whitehouse /* Some flags must not be changed */ 11309e6e0a12SSteven Whitehouse if (args_neq(&args, &sdp->sd_args, spectator) || 11319e6e0a12SSteven Whitehouse args_neq(&args, &sdp->sd_args, localflocks) || 11329e6e0a12SSteven Whitehouse args_neq(&args, &sdp->sd_args, meta)) 11339e6e0a12SSteven Whitehouse return -EINVAL; 11349e6e0a12SSteven Whitehouse 11359e6e0a12SSteven Whitehouse if (sdp->sd_args.ar_spectator) 11369e6e0a12SSteven Whitehouse *flags |= MS_RDONLY; 11379e6e0a12SSteven Whitehouse 11389e6e0a12SSteven Whitehouse if ((sb->s_flags ^ *flags) & MS_RDONLY) { 11399e6e0a12SSteven Whitehouse if (*flags & MS_RDONLY) 11409e6e0a12SSteven Whitehouse error = gfs2_make_fs_ro(sdp); 11419e6e0a12SSteven Whitehouse else 11429e6e0a12SSteven Whitehouse error = gfs2_make_fs_rw(sdp); 11439e6e0a12SSteven Whitehouse if (error) 11449e6e0a12SSteven Whitehouse return error; 11459e6e0a12SSteven Whitehouse } 11469e6e0a12SSteven Whitehouse 11479e6e0a12SSteven Whitehouse sdp->sd_args = args; 11489e6e0a12SSteven Whitehouse if (sdp->sd_args.ar_posix_acl) 11499e6e0a12SSteven Whitehouse sb->s_flags |= MS_POSIXACL; 11509e6e0a12SSteven Whitehouse else 11519e6e0a12SSteven Whitehouse sb->s_flags &= ~MS_POSIXACL; 1152f25934c5SChristoph Hellwig if (sdp->sd_args.ar_nobarrier) 1153f25934c5SChristoph Hellwig set_bit(SDF_NOBARRIERS, &sdp->sd_flags); 1154f25934c5SChristoph Hellwig else 1155f25934c5SChristoph Hellwig clear_bit(SDF_NOBARRIERS, &sdp->sd_flags); 11569e6e0a12SSteven Whitehouse spin_lock(>->gt_spin); 11575e687eacSBenjamin Marzinski gt->gt_logd_secs = args.ar_commit; 11583d3c10f2SBenjamin Marzinski gt->gt_quota_quantum = args.ar_quota_quantum; 11593d3c10f2SBenjamin Marzinski if (args.ar_statfs_quantum) { 11603d3c10f2SBenjamin Marzinski gt->gt_statfs_slow = 0; 11613d3c10f2SBenjamin Marzinski gt->gt_statfs_quantum = args.ar_statfs_quantum; 11623d3c10f2SBenjamin Marzinski } 11633d3c10f2SBenjamin Marzinski else { 11643d3c10f2SBenjamin Marzinski gt->gt_statfs_slow = 1; 11653d3c10f2SBenjamin Marzinski gt->gt_statfs_quantum = 30; 11663d3c10f2SBenjamin Marzinski } 11679e6e0a12SSteven Whitehouse spin_unlock(>->gt_spin); 11689e6e0a12SSteven Whitehouse 11698633ecfaSSteven Whitehouse gfs2_online_uevent(sdp); 11709e6e0a12SSteven Whitehouse return 0; 11719e6e0a12SSteven Whitehouse } 11729e6e0a12SSteven Whitehouse 11739e6e0a12SSteven Whitehouse /** 11749e6e0a12SSteven Whitehouse * gfs2_drop_inode - Drop an inode (test for remote unlink) 11759e6e0a12SSteven Whitehouse * @inode: The inode to drop 11769e6e0a12SSteven Whitehouse * 11779e6e0a12SSteven Whitehouse * If we've received a callback on an iopen lock then its because a 11789e6e0a12SSteven Whitehouse * remote node tried to deallocate the inode but failed due to this node 11799e6e0a12SSteven Whitehouse * still having the inode open. Here we mark the link count zero 11809e6e0a12SSteven Whitehouse * since we know that it must have reached zero if the GLF_DEMOTE flag 11819e6e0a12SSteven Whitehouse * is set on the iopen glock. If we didn't do a disk read since the 11829e6e0a12SSteven Whitehouse * remote node removed the final link then we might otherwise miss 11839e6e0a12SSteven Whitehouse * this event. This check ensures that this node will deallocate the 11849e6e0a12SSteven Whitehouse * inode's blocks, or alternatively pass the baton on to another 11859e6e0a12SSteven Whitehouse * node for later deallocation. 11869e6e0a12SSteven Whitehouse */ 11879e6e0a12SSteven Whitehouse 118845321ac5SAl Viro static int gfs2_drop_inode(struct inode *inode) 11899e6e0a12SSteven Whitehouse { 11909e6e0a12SSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 11919e6e0a12SSteven Whitehouse 1192009d8518SSteven Whitehouse if (inode->i_nlink) { 11939e6e0a12SSteven Whitehouse struct gfs2_glock *gl = ip->i_iopen_gh.gh_gl; 11949e6e0a12SSteven Whitehouse if (gl && test_bit(GLF_DEMOTE, &gl->gl_flags)) 11959e6e0a12SSteven Whitehouse clear_nlink(inode); 11969e6e0a12SSteven Whitehouse } 119745321ac5SAl Viro return generic_drop_inode(inode); 11989e6e0a12SSteven Whitehouse } 11999e6e0a12SSteven Whitehouse 12009e6e0a12SSteven Whitehouse static int is_ancestor(const struct dentry *d1, const struct dentry *d2) 12019e6e0a12SSteven Whitehouse { 12029e6e0a12SSteven Whitehouse do { 12039e6e0a12SSteven Whitehouse if (d1 == d2) 12049e6e0a12SSteven Whitehouse return 1; 12059e6e0a12SSteven Whitehouse d1 = d1->d_parent; 12069e6e0a12SSteven Whitehouse } while (!IS_ROOT(d1)); 12079e6e0a12SSteven Whitehouse return 0; 12089e6e0a12SSteven Whitehouse } 12099e6e0a12SSteven Whitehouse 12109e6e0a12SSteven Whitehouse /** 12119e6e0a12SSteven Whitehouse * gfs2_show_options - Show mount options for /proc/mounts 12129e6e0a12SSteven Whitehouse * @s: seq_file structure 12139e6e0a12SSteven Whitehouse * @mnt: vfsmount 12149e6e0a12SSteven Whitehouse * 12159e6e0a12SSteven Whitehouse * Returns: 0 on success or error code 12169e6e0a12SSteven Whitehouse */ 12179e6e0a12SSteven Whitehouse 12189e6e0a12SSteven Whitehouse static int gfs2_show_options(struct seq_file *s, struct vfsmount *mnt) 12199e6e0a12SSteven Whitehouse { 12209e6e0a12SSteven Whitehouse struct gfs2_sbd *sdp = mnt->mnt_sb->s_fs_info; 12219e6e0a12SSteven Whitehouse struct gfs2_args *args = &sdp->sd_args; 12223d3c10f2SBenjamin Marzinski int val; 12239e6e0a12SSteven Whitehouse 12249e6e0a12SSteven Whitehouse if (is_ancestor(mnt->mnt_root, sdp->sd_master_dir)) 12259e6e0a12SSteven Whitehouse seq_printf(s, ",meta"); 12269e6e0a12SSteven Whitehouse if (args->ar_lockproto[0]) 12279e6e0a12SSteven Whitehouse seq_printf(s, ",lockproto=%s", args->ar_lockproto); 12289e6e0a12SSteven Whitehouse if (args->ar_locktable[0]) 12299e6e0a12SSteven Whitehouse seq_printf(s, ",locktable=%s", args->ar_locktable); 12309e6e0a12SSteven Whitehouse if (args->ar_hostdata[0]) 12319e6e0a12SSteven Whitehouse seq_printf(s, ",hostdata=%s", args->ar_hostdata); 12329e6e0a12SSteven Whitehouse if (args->ar_spectator) 12339e6e0a12SSteven Whitehouse seq_printf(s, ",spectator"); 12349e6e0a12SSteven Whitehouse if (args->ar_localflocks) 12359e6e0a12SSteven Whitehouse seq_printf(s, ",localflocks"); 12369e6e0a12SSteven Whitehouse if (args->ar_debug) 12379e6e0a12SSteven Whitehouse seq_printf(s, ",debug"); 12389e6e0a12SSteven Whitehouse if (args->ar_posix_acl) 12399e6e0a12SSteven Whitehouse seq_printf(s, ",acl"); 12409e6e0a12SSteven Whitehouse if (args->ar_quota != GFS2_QUOTA_DEFAULT) { 12419e6e0a12SSteven Whitehouse char *state; 12429e6e0a12SSteven Whitehouse switch (args->ar_quota) { 12439e6e0a12SSteven Whitehouse case GFS2_QUOTA_OFF: 12449e6e0a12SSteven Whitehouse state = "off"; 12459e6e0a12SSteven Whitehouse break; 12469e6e0a12SSteven Whitehouse case GFS2_QUOTA_ACCOUNT: 12479e6e0a12SSteven Whitehouse state = "account"; 12489e6e0a12SSteven Whitehouse break; 12499e6e0a12SSteven Whitehouse case GFS2_QUOTA_ON: 12509e6e0a12SSteven Whitehouse state = "on"; 12519e6e0a12SSteven Whitehouse break; 12529e6e0a12SSteven Whitehouse default: 12539e6e0a12SSteven Whitehouse state = "unknown"; 12549e6e0a12SSteven Whitehouse break; 12559e6e0a12SSteven Whitehouse } 12569e6e0a12SSteven Whitehouse seq_printf(s, ",quota=%s", state); 12579e6e0a12SSteven Whitehouse } 12589e6e0a12SSteven Whitehouse if (args->ar_suiddir) 12599e6e0a12SSteven Whitehouse seq_printf(s, ",suiddir"); 12609e6e0a12SSteven Whitehouse if (args->ar_data != GFS2_DATA_DEFAULT) { 12619e6e0a12SSteven Whitehouse char *state; 12629e6e0a12SSteven Whitehouse switch (args->ar_data) { 12639e6e0a12SSteven Whitehouse case GFS2_DATA_WRITEBACK: 12649e6e0a12SSteven Whitehouse state = "writeback"; 12659e6e0a12SSteven Whitehouse break; 12669e6e0a12SSteven Whitehouse case GFS2_DATA_ORDERED: 12679e6e0a12SSteven Whitehouse state = "ordered"; 12689e6e0a12SSteven Whitehouse break; 12699e6e0a12SSteven Whitehouse default: 12709e6e0a12SSteven Whitehouse state = "unknown"; 12719e6e0a12SSteven Whitehouse break; 12729e6e0a12SSteven Whitehouse } 12739e6e0a12SSteven Whitehouse seq_printf(s, ",data=%s", state); 12749e6e0a12SSteven Whitehouse } 12759e6e0a12SSteven Whitehouse if (args->ar_discard) 12769e6e0a12SSteven Whitehouse seq_printf(s, ",discard"); 12775e687eacSBenjamin Marzinski val = sdp->sd_tune.gt_logd_secs; 12785e687eacSBenjamin Marzinski if (val != 30) 12793d3c10f2SBenjamin Marzinski seq_printf(s, ",commit=%d", val); 12803d3c10f2SBenjamin Marzinski val = sdp->sd_tune.gt_statfs_quantum; 12813d3c10f2SBenjamin Marzinski if (val != 30) 12823d3c10f2SBenjamin Marzinski seq_printf(s, ",statfs_quantum=%d", val); 12833d3c10f2SBenjamin Marzinski val = sdp->sd_tune.gt_quota_quantum; 12843d3c10f2SBenjamin Marzinski if (val != 60) 12853d3c10f2SBenjamin Marzinski seq_printf(s, ",quota_quantum=%d", val); 12863d3c10f2SBenjamin Marzinski if (args->ar_statfs_percent) 12873d3c10f2SBenjamin Marzinski seq_printf(s, ",statfs_percent=%d", args->ar_statfs_percent); 1288d34843d0SBob Peterson if (args->ar_errors != GFS2_ERRORS_DEFAULT) { 1289d34843d0SBob Peterson const char *state; 1290d34843d0SBob Peterson 1291d34843d0SBob Peterson switch (args->ar_errors) { 1292d34843d0SBob Peterson case GFS2_ERRORS_WITHDRAW: 1293d34843d0SBob Peterson state = "withdraw"; 1294d34843d0SBob Peterson break; 1295d34843d0SBob Peterson case GFS2_ERRORS_PANIC: 1296d34843d0SBob Peterson state = "panic"; 1297d34843d0SBob Peterson break; 1298d34843d0SBob Peterson default: 1299d34843d0SBob Peterson state = "unknown"; 1300d34843d0SBob Peterson break; 1301d34843d0SBob Peterson } 1302d34843d0SBob Peterson seq_printf(s, ",errors=%s", state); 1303d34843d0SBob Peterson } 1304cdcfde62SSteven Whitehouse if (test_bit(SDF_NOBARRIERS, &sdp->sd_flags)) 1305cdcfde62SSteven Whitehouse seq_printf(s, ",nobarrier"); 1306913a71d2SSteven Whitehouse if (test_bit(SDF_DEMOTE, &sdp->sd_flags)) 1307913a71d2SSteven Whitehouse seq_printf(s, ",demote_interface_used"); 13089e6e0a12SSteven Whitehouse return 0; 13099e6e0a12SSteven Whitehouse } 13109e6e0a12SSteven Whitehouse 13119e6e0a12SSteven Whitehouse /* 13129e6e0a12SSteven Whitehouse * We have to (at the moment) hold the inodes main lock to cover 13139e6e0a12SSteven Whitehouse * the gap between unlocking the shared lock on the iopen lock and 13149e6e0a12SSteven Whitehouse * taking the exclusive lock. I'd rather do a shared -> exclusive 13159e6e0a12SSteven Whitehouse * conversion on the iopen lock, but we can change that later. This 13169e6e0a12SSteven Whitehouse * is safe, just less efficient. 13179e6e0a12SSteven Whitehouse */ 13189e6e0a12SSteven Whitehouse 1319d5c1515cSAl Viro static void gfs2_evict_inode(struct inode *inode) 13209e6e0a12SSteven Whitehouse { 1321001e8e8dSSteven Whitehouse struct super_block *sb = inode->i_sb; 1322001e8e8dSSteven Whitehouse struct gfs2_sbd *sdp = sb->s_fs_info; 13239e6e0a12SSteven Whitehouse struct gfs2_inode *ip = GFS2_I(inode); 13249e6e0a12SSteven Whitehouse struct gfs2_holder gh; 13259e6e0a12SSteven Whitehouse int error; 13269e6e0a12SSteven Whitehouse 1327001e8e8dSSteven Whitehouse if (inode->i_nlink || (sb->s_flags & MS_RDONLY)) 1328d5c1515cSAl Viro goto out; 1329d5c1515cSAl Viro 133044ad37d6SBob Peterson /* Must not read inode block until block type has been verified */ 133144ad37d6SBob Peterson error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_SKIP, &gh); 13329e6e0a12SSteven Whitehouse if (unlikely(error)) { 13339e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&ip->i_iopen_gh); 13349e6e0a12SSteven Whitehouse goto out; 13359e6e0a12SSteven Whitehouse } 13369e6e0a12SSteven Whitehouse 1337acf7e244SSteven Whitehouse error = gfs2_check_blk_type(sdp, ip->i_no_addr, GFS2_BLKST_UNLINKED); 1338acf7e244SSteven Whitehouse if (error) 1339acf7e244SSteven Whitehouse goto out_truncate; 1340acf7e244SSteven Whitehouse 134144ad37d6SBob Peterson if (test_bit(GIF_INVALID, &ip->i_flags)) { 134244ad37d6SBob Peterson error = gfs2_inode_refresh(ip); 134344ad37d6SBob Peterson if (error) 134444ad37d6SBob Peterson goto out_truncate; 134544ad37d6SBob Peterson } 134644ad37d6SBob Peterson 134723c30108SBenjamin Marzinski ip->i_iopen_gh.gh_flags |= GL_NOCACHE; 13489e6e0a12SSteven Whitehouse gfs2_glock_dq_wait(&ip->i_iopen_gh); 13499e6e0a12SSteven Whitehouse gfs2_holder_reinit(LM_ST_EXCLUSIVE, LM_FLAG_TRY_1CB | GL_NOCACHE, &ip->i_iopen_gh); 13509e6e0a12SSteven Whitehouse error = gfs2_glock_nq(&ip->i_iopen_gh); 13519e6e0a12SSteven Whitehouse if (error) 13529e6e0a12SSteven Whitehouse goto out_truncate; 13539e6e0a12SSteven Whitehouse 13549e6e0a12SSteven Whitehouse if (S_ISDIR(inode->i_mode) && 13559e6e0a12SSteven Whitehouse (ip->i_diskflags & GFS2_DIF_EXHASH)) { 13569e6e0a12SSteven Whitehouse error = gfs2_dir_exhash_dealloc(ip); 13579e6e0a12SSteven Whitehouse if (error) 13589e6e0a12SSteven Whitehouse goto out_unlock; 13599e6e0a12SSteven Whitehouse } 13609e6e0a12SSteven Whitehouse 13619e6e0a12SSteven Whitehouse if (ip->i_eattr) { 13629e6e0a12SSteven Whitehouse error = gfs2_ea_dealloc(ip); 13639e6e0a12SSteven Whitehouse if (error) 13649e6e0a12SSteven Whitehouse goto out_unlock; 13659e6e0a12SSteven Whitehouse } 13669e6e0a12SSteven Whitehouse 13679e6e0a12SSteven Whitehouse if (!gfs2_is_stuffed(ip)) { 13689e6e0a12SSteven Whitehouse error = gfs2_file_dealloc(ip); 13699e6e0a12SSteven Whitehouse if (error) 13709e6e0a12SSteven Whitehouse goto out_unlock; 13719e6e0a12SSteven Whitehouse } 13729e6e0a12SSteven Whitehouse 13739e6e0a12SSteven Whitehouse error = gfs2_dinode_dealloc(ip); 13749e6e0a12SSteven Whitehouse if (error) 13759e6e0a12SSteven Whitehouse goto out_unlock; 13769e6e0a12SSteven Whitehouse 13779e6e0a12SSteven Whitehouse out_truncate: 13789e6e0a12SSteven Whitehouse error = gfs2_trans_begin(sdp, 0, sdp->sd_jdesc->jd_blocks); 13799e6e0a12SSteven Whitehouse if (error) 13809e6e0a12SSteven Whitehouse goto out_unlock; 13819e6e0a12SSteven Whitehouse /* Needs to be done before glock release & also in a transaction */ 13829e6e0a12SSteven Whitehouse truncate_inode_pages(&inode->i_data, 0); 13839e6e0a12SSteven Whitehouse gfs2_trans_end(sdp); 13849e6e0a12SSteven Whitehouse 13859e6e0a12SSteven Whitehouse out_unlock: 13869e6e0a12SSteven Whitehouse if (test_bit(HIF_HOLDER, &ip->i_iopen_gh.gh_iflags)) 13879e6e0a12SSteven Whitehouse gfs2_glock_dq(&ip->i_iopen_gh); 13889e6e0a12SSteven Whitehouse gfs2_holder_uninit(&ip->i_iopen_gh); 13899e6e0a12SSteven Whitehouse gfs2_glock_dq_uninit(&gh); 13909e6e0a12SSteven Whitehouse if (error && error != GLR_TRYFAILED && error != -EROFS) 1391d5c1515cSAl Viro fs_warn(sdp, "gfs2_evict_inode: %d\n", error); 13929e6e0a12SSteven Whitehouse out: 13939e6e0a12SSteven Whitehouse truncate_inode_pages(&inode->i_data, 0); 1394d5c1515cSAl Viro end_writeback(inode); 1395d5c1515cSAl Viro 1396d5c1515cSAl Viro ip->i_gl->gl_object = NULL; 1397d5c1515cSAl Viro gfs2_glock_put(ip->i_gl); 1398d5c1515cSAl Viro ip->i_gl = NULL; 1399d5c1515cSAl Viro if (ip->i_iopen_gh.gh_gl) { 1400d5c1515cSAl Viro ip->i_iopen_gh.gh_gl->gl_object = NULL; 1401d5c1515cSAl Viro gfs2_glock_dq_uninit(&ip->i_iopen_gh); 1402d5c1515cSAl Viro } 14039e6e0a12SSteven Whitehouse } 14049e6e0a12SSteven Whitehouse 14059e6e0a12SSteven Whitehouse static struct inode *gfs2_alloc_inode(struct super_block *sb) 14069e6e0a12SSteven Whitehouse { 14079e6e0a12SSteven Whitehouse struct gfs2_inode *ip; 14089e6e0a12SSteven Whitehouse 14099e6e0a12SSteven Whitehouse ip = kmem_cache_alloc(gfs2_inode_cachep, GFP_KERNEL); 14109e6e0a12SSteven Whitehouse if (ip) { 14119e6e0a12SSteven Whitehouse ip->i_flags = 0; 14129e6e0a12SSteven Whitehouse ip->i_gl = NULL; 14139e6e0a12SSteven Whitehouse } 14149e6e0a12SSteven Whitehouse return &ip->i_inode; 14159e6e0a12SSteven Whitehouse } 14169e6e0a12SSteven Whitehouse 1417fa0d7e3dSNick Piggin static void gfs2_i_callback(struct rcu_head *head) 1418fa0d7e3dSNick Piggin { 1419fa0d7e3dSNick Piggin struct inode *inode = container_of(head, struct inode, i_rcu); 1420fa0d7e3dSNick Piggin INIT_LIST_HEAD(&inode->i_dentry); 1421fa0d7e3dSNick Piggin kmem_cache_free(gfs2_inode_cachep, inode); 1422fa0d7e3dSNick Piggin } 1423fa0d7e3dSNick Piggin 14249e6e0a12SSteven Whitehouse static void gfs2_destroy_inode(struct inode *inode) 14259e6e0a12SSteven Whitehouse { 1426fa0d7e3dSNick Piggin call_rcu(&inode->i_rcu, gfs2_i_callback); 14279e6e0a12SSteven Whitehouse } 14289e6e0a12SSteven Whitehouse 14299e6e0a12SSteven Whitehouse const struct super_operations gfs2_super_ops = { 14309e6e0a12SSteven Whitehouse .alloc_inode = gfs2_alloc_inode, 14319e6e0a12SSteven Whitehouse .destroy_inode = gfs2_destroy_inode, 14329e6e0a12SSteven Whitehouse .write_inode = gfs2_write_inode, 1433d5c1515cSAl Viro .evict_inode = gfs2_evict_inode, 14349e6e0a12SSteven Whitehouse .put_super = gfs2_put_super, 14359e6e0a12SSteven Whitehouse .sync_fs = gfs2_sync_fs, 14369e6e0a12SSteven Whitehouse .freeze_fs = gfs2_freeze, 14379e6e0a12SSteven Whitehouse .unfreeze_fs = gfs2_unfreeze, 14389e6e0a12SSteven Whitehouse .statfs = gfs2_statfs, 14399e6e0a12SSteven Whitehouse .remount_fs = gfs2_remount_fs, 14409e6e0a12SSteven Whitehouse .drop_inode = gfs2_drop_inode, 14419e6e0a12SSteven Whitehouse .show_options = gfs2_show_options, 14429e6e0a12SSteven Whitehouse }; 14439e6e0a12SSteven Whitehouse 1444