David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
Bob Peterson | cf45b75 | 2008-01-31 10:31:39 -0600 | [diff] [blame] | 3 | * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 4 | * |
| 5 | * This copyrighted material is made available to anyone wishing to use, |
| 6 | * modify, copy, or redistribute it subject to the terms and conditions |
Steven Whitehouse | e9fc2aa | 2006-09-01 11:05:15 -0400 | [diff] [blame] | 7 | * of the GNU General Public License version 2. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 8 | */ |
| 9 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 10 | #include <linux/slab.h> |
| 11 | #include <linux/spinlock.h> |
| 12 | #include <linux/completion.h> |
| 13 | #include <linux/buffer_head.h> |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 14 | #include <linux/gfs2_ondisk.h> |
Steven Whitehouse | 6802e34 | 2008-05-21 17:03:22 +0100 | [diff] [blame] | 15 | #include <linux/bio.h> |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 16 | |
| 17 | #include "gfs2.h" |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 18 | #include "incore.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 19 | #include "bmap.h" |
| 20 | #include "glock.h" |
| 21 | #include "glops.h" |
| 22 | #include "inode.h" |
| 23 | #include "log.h" |
| 24 | #include "meta_io.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 25 | #include "recovery.h" |
| 26 | #include "rgrp.h" |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 27 | #include "util.h" |
Steven Whitehouse | ddacfaf | 2006-10-03 11:10:41 -0400 | [diff] [blame] | 28 | #include "trans.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 29 | |
Steven Whitehouse | ddacfaf | 2006-10-03 11:10:41 -0400 | [diff] [blame] | 30 | /** |
| 31 | * ail_empty_gl - remove all buffers for a given lock from the AIL |
| 32 | * @gl: the glock |
| 33 | * |
| 34 | * None of the buffers should be dirty, locked, or pinned. |
| 35 | */ |
| 36 | |
| 37 | static void gfs2_ail_empty_gl(struct gfs2_glock *gl) |
| 38 | { |
| 39 | struct gfs2_sbd *sdp = gl->gl_sbd; |
Steven Whitehouse | ddacfaf | 2006-10-03 11:10:41 -0400 | [diff] [blame] | 40 | struct list_head *head = &gl->gl_ail_list; |
| 41 | struct gfs2_bufdata *bd; |
| 42 | struct buffer_head *bh; |
Steven Whitehouse | d8348de | 2009-02-05 10:12:38 +0000 | [diff] [blame] | 43 | struct gfs2_trans tr; |
Steven Whitehouse | ddacfaf | 2006-10-03 11:10:41 -0400 | [diff] [blame] | 44 | |
Steven Whitehouse | d8348de | 2009-02-05 10:12:38 +0000 | [diff] [blame] | 45 | memset(&tr, 0, sizeof(tr)); |
| 46 | tr.tr_revokes = atomic_read(&gl->gl_ail_count); |
| 47 | |
| 48 | if (!tr.tr_revokes) |
Steven Whitehouse | ddacfaf | 2006-10-03 11:10:41 -0400 | [diff] [blame] | 49 | return; |
| 50 | |
Steven Whitehouse | d8348de | 2009-02-05 10:12:38 +0000 | [diff] [blame] | 51 | /* A shortened, inline version of gfs2_trans_begin() */ |
| 52 | tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64)); |
| 53 | tr.tr_ip = (unsigned long)__builtin_return_address(0); |
| 54 | INIT_LIST_HEAD(&tr.tr_list_buf); |
| 55 | gfs2_log_reserve(sdp, tr.tr_reserved); |
| 56 | BUG_ON(current->journal_info); |
| 57 | current->journal_info = &tr; |
Steven Whitehouse | ddacfaf | 2006-10-03 11:10:41 -0400 | [diff] [blame] | 58 | |
| 59 | gfs2_log_lock(sdp); |
| 60 | while (!list_empty(head)) { |
| 61 | bd = list_entry(head->next, struct gfs2_bufdata, |
| 62 | bd_ail_gl_list); |
| 63 | bh = bd->bd_bh; |
Steven Whitehouse | f91a0d3 | 2007-10-15 16:29:05 +0100 | [diff] [blame] | 64 | gfs2_remove_from_ail(bd); |
Steven Whitehouse | 1ad38c4 | 2007-09-03 11:01:33 +0100 | [diff] [blame] | 65 | bd->bd_bh = NULL; |
| 66 | bh->b_private = NULL; |
| 67 | bd->bd_blkno = bh->b_blocknr; |
| 68 | gfs2_assert_withdraw(sdp, !buffer_busy(bh)); |
| 69 | gfs2_trans_add_revoke(sdp, bd); |
Steven Whitehouse | ddacfaf | 2006-10-03 11:10:41 -0400 | [diff] [blame] | 70 | } |
| 71 | gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count)); |
| 72 | gfs2_log_unlock(sdp); |
| 73 | |
| 74 | gfs2_trans_end(sdp); |
| 75 | gfs2_log_flush(sdp, NULL); |
| 76 | } |
Steven Whitehouse | ba7f729 | 2006-07-26 11:27:10 -0400 | [diff] [blame] | 77 | |
| 78 | /** |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 79 | * rgrp_go_sync - sync out the metadata for this glock |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 80 | * @gl: the glock |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 81 | * |
| 82 | * Called when demoting or unlocking an EX glock. We must flush |
| 83 | * to disk all dirty buffers/pages relating to this glock, and must not |
| 84 | * not return to caller to demote/unlock the glock until I/O is complete. |
| 85 | */ |
| 86 | |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 87 | static void rgrp_go_sync(struct gfs2_glock *gl) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 88 | { |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 89 | struct address_space *metamapping = gl->gl_aspace->i_mapping; |
| 90 | int error; |
Steven Whitehouse | b5d32be | 2007-01-22 12:15:34 -0500 | [diff] [blame] | 91 | |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 92 | if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) |
| 93 | return; |
| 94 | BUG_ON(gl->gl_state != LM_ST_EXCLUSIVE); |
| 95 | |
| 96 | gfs2_log_flush(gl->gl_sbd, gl); |
| 97 | filemap_fdatawrite(metamapping); |
| 98 | error = filemap_fdatawait(metamapping); |
| 99 | mapping_set_error(metamapping, error); |
| 100 | gfs2_ail_empty_gl(gl); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 101 | } |
| 102 | |
| 103 | /** |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 104 | * rgrp_go_inval - invalidate the metadata for this glock |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 105 | * @gl: the glock |
| 106 | * @flags: |
| 107 | * |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 108 | * We never used LM_ST_DEFERRED with resource groups, so that we |
| 109 | * should always see the metadata flag set here. |
| 110 | * |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 111 | */ |
| 112 | |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 113 | static void rgrp_go_inval(struct gfs2_glock *gl, int flags) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 114 | { |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 115 | struct address_space *mapping = gl->gl_aspace->i_mapping; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 116 | |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 117 | BUG_ON(!(flags & DIO_METADATA)); |
| 118 | gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count)); |
| 119 | truncate_inode_pages(mapping, 0); |
| 120 | |
| 121 | if (gl->gl_object) { |
Bob Peterson | cf45b75 | 2008-01-31 10:31:39 -0600 | [diff] [blame] | 122 | struct gfs2_rgrpd *rgd = (struct gfs2_rgrpd *)gl->gl_object; |
Bob Peterson | cf45b75 | 2008-01-31 10:31:39 -0600 | [diff] [blame] | 123 | rgd->rd_flags &= ~GFS2_RDF_UPTODATE; |
| 124 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 125 | } |
| 126 | |
| 127 | /** |
Steven Whitehouse | b5d32be | 2007-01-22 12:15:34 -0500 | [diff] [blame] | 128 | * inode_go_sync - Sync the dirty data and/or metadata for an inode glock |
| 129 | * @gl: the glock protecting the inode |
| 130 | * |
| 131 | */ |
| 132 | |
| 133 | static void inode_go_sync(struct gfs2_glock *gl) |
| 134 | { |
| 135 | struct gfs2_inode *ip = gl->gl_object; |
Steven Whitehouse | 3042a2c | 2007-11-02 08:39:34 +0000 | [diff] [blame] | 136 | struct address_space *metamapping = gl->gl_aspace->i_mapping; |
| 137 | int error; |
| 138 | |
Steven Whitehouse | b5d32be | 2007-01-22 12:15:34 -0500 | [diff] [blame] | 139 | if (ip && !S_ISREG(ip->i_inode.i_mode)) |
| 140 | ip = NULL; |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 141 | if (ip && test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags)) |
| 142 | unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0); |
| 143 | if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) |
| 144 | return; |
Steven Whitehouse | b5d32be | 2007-01-22 12:15:34 -0500 | [diff] [blame] | 145 | |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 146 | BUG_ON(gl->gl_state != LM_ST_EXCLUSIVE); |
| 147 | |
| 148 | gfs2_log_flush(gl->gl_sbd, gl); |
| 149 | filemap_fdatawrite(metamapping); |
| 150 | if (ip) { |
| 151 | struct address_space *mapping = ip->i_inode.i_mapping; |
| 152 | filemap_fdatawrite(mapping); |
| 153 | error = filemap_fdatawait(mapping); |
| 154 | mapping_set_error(mapping, error); |
Steven Whitehouse | b5d32be | 2007-01-22 12:15:34 -0500 | [diff] [blame] | 155 | } |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 156 | error = filemap_fdatawait(metamapping); |
| 157 | mapping_set_error(metamapping, error); |
| 158 | gfs2_ail_empty_gl(gl); |
Steven Whitehouse | 52fcd11 | 2009-04-20 08:58:45 +0100 | [diff] [blame] | 159 | /* |
| 160 | * Writeback of the data mapping may cause the dirty flag to be set |
| 161 | * so we have to clear it again here. |
| 162 | */ |
| 163 | smp_mb__before_clear_bit(); |
| 164 | clear_bit(GLF_DIRTY, &gl->gl_flags); |
Steven Whitehouse | b5d32be | 2007-01-22 12:15:34 -0500 | [diff] [blame] | 165 | } |
| 166 | |
| 167 | /** |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 168 | * inode_go_inval - prepare a inode glock to be released |
| 169 | * @gl: the glock |
| 170 | * @flags: |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 171 | * |
| 172 | * Normally we invlidate everything, but if we are moving into |
| 173 | * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we |
| 174 | * can keep hold of the metadata, since it won't have changed. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 175 | * |
| 176 | */ |
| 177 | |
| 178 | static void inode_go_inval(struct gfs2_glock *gl, int flags) |
| 179 | { |
Steven Whitehouse | b004157 | 2006-11-23 10:51:34 -0500 | [diff] [blame] | 180 | struct gfs2_inode *ip = gl->gl_object; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 181 | |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 182 | gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count)); |
| 183 | |
| 184 | if (flags & DIO_METADATA) { |
| 185 | struct address_space *mapping = gl->gl_aspace->i_mapping; |
| 186 | truncate_inode_pages(mapping, 0); |
Steven Whitehouse | b004157 | 2006-11-23 10:51:34 -0500 | [diff] [blame] | 187 | if (ip) |
| 188 | set_bit(GIF_INVALID, &ip->i_flags); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 189 | } |
Steven Whitehouse | b004157 | 2006-11-23 10:51:34 -0500 | [diff] [blame] | 190 | |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 191 | if (ip == GFS2_I(gl->gl_sbd->sd_rindex)) |
| 192 | gl->gl_sbd->sd_rindex_uptodate = 0; |
Steven Whitehouse | 3cc3f71 | 2007-10-15 15:40:33 +0100 | [diff] [blame] | 193 | if (ip && S_ISREG(ip->i_inode.i_mode)) |
Steven Whitehouse | b004157 | 2006-11-23 10:51:34 -0500 | [diff] [blame] | 194 | truncate_inode_pages(ip->i_inode.i_mapping, 0); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 195 | } |
| 196 | |
| 197 | /** |
| 198 | * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock |
| 199 | * @gl: the glock |
| 200 | * |
| 201 | * Returns: 1 if it's ok |
| 202 | */ |
| 203 | |
Steven Whitehouse | 97cc102 | 2008-11-20 13:39:47 +0000 | [diff] [blame] | 204 | static int inode_go_demote_ok(const struct gfs2_glock *gl) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 205 | { |
| 206 | struct gfs2_sbd *sdp = gl->gl_sbd; |
Steven Whitehouse | 97cc102 | 2008-11-20 13:39:47 +0000 | [diff] [blame] | 207 | if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object) |
| 208 | return 0; |
| 209 | return 1; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 210 | } |
| 211 | |
| 212 | /** |
| 213 | * inode_go_lock - operation done after an inode lock is locked by a process |
| 214 | * @gl: the glock |
| 215 | * @flags: |
| 216 | * |
| 217 | * Returns: errno |
| 218 | */ |
| 219 | |
| 220 | static int inode_go_lock(struct gfs2_holder *gh) |
| 221 | { |
| 222 | struct gfs2_glock *gl = gh->gh_gl; |
Steven Whitehouse | 813e0c4 | 2008-11-18 13:38:48 +0000 | [diff] [blame] | 223 | struct gfs2_sbd *sdp = gl->gl_sbd; |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 224 | struct gfs2_inode *ip = gl->gl_object; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 225 | int error = 0; |
| 226 | |
Bob Peterson | 091806e | 2008-04-29 12:35:48 -0500 | [diff] [blame] | 227 | if (!ip || (gh->gh_flags & GL_SKIP)) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 228 | return 0; |
| 229 | |
Steven Whitehouse | bfded27 | 2006-11-01 16:05:38 -0500 | [diff] [blame] | 230 | if (test_bit(GIF_INVALID, &ip->i_flags)) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 231 | error = gfs2_inode_refresh(ip); |
| 232 | if (error) |
| 233 | return error; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 234 | } |
| 235 | |
Steven Whitehouse | 383f01f | 2008-11-04 10:05:22 +0000 | [diff] [blame] | 236 | if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) && |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 237 | (gl->gl_state == LM_ST_EXCLUSIVE) && |
Steven Whitehouse | 813e0c4 | 2008-11-18 13:38:48 +0000 | [diff] [blame] | 238 | (gh->gh_state == LM_ST_EXCLUSIVE)) { |
| 239 | spin_lock(&sdp->sd_trunc_lock); |
| 240 | if (list_empty(&ip->i_trunc_list)) |
| 241 | list_add(&sdp->sd_trunc_list, &ip->i_trunc_list); |
| 242 | spin_unlock(&sdp->sd_trunc_lock); |
| 243 | wake_up(&sdp->sd_quota_wait); |
| 244 | return 1; |
| 245 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 246 | |
| 247 | return error; |
| 248 | } |
| 249 | |
| 250 | /** |
Steven Whitehouse | 6802e34 | 2008-05-21 17:03:22 +0100 | [diff] [blame] | 251 | * inode_go_dump - print information about an inode |
| 252 | * @seq: The iterator |
| 253 | * @ip: the inode |
| 254 | * |
| 255 | * Returns: 0 on success, -ENOBUFS when we run out of space |
| 256 | */ |
| 257 | |
| 258 | static int inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl) |
| 259 | { |
| 260 | const struct gfs2_inode *ip = gl->gl_object; |
| 261 | if (ip == NULL) |
| 262 | return 0; |
Steven Whitehouse | fa75ced | 2008-11-10 10:10:12 +0000 | [diff] [blame] | 263 | gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu/%llu\n", |
Steven Whitehouse | 6802e34 | 2008-05-21 17:03:22 +0100 | [diff] [blame] | 264 | (unsigned long long)ip->i_no_formal_ino, |
| 265 | (unsigned long long)ip->i_no_addr, |
Steven Whitehouse | fa75ced | 2008-11-10 10:10:12 +0000 | [diff] [blame] | 266 | IF2DT(ip->i_inode.i_mode), ip->i_flags, |
| 267 | (unsigned int)ip->i_diskflags, |
| 268 | (unsigned long long)ip->i_inode.i_size, |
| 269 | (unsigned long long)ip->i_disksize); |
Steven Whitehouse | 6802e34 | 2008-05-21 17:03:22 +0100 | [diff] [blame] | 270 | return 0; |
| 271 | } |
| 272 | |
| 273 | /** |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 274 | * rgrp_go_demote_ok - Check to see if it's ok to unlock a RG's glock |
| 275 | * @gl: the glock |
| 276 | * |
| 277 | * Returns: 1 if it's ok |
| 278 | */ |
| 279 | |
Steven Whitehouse | 97cc102 | 2008-11-20 13:39:47 +0000 | [diff] [blame] | 280 | static int rgrp_go_demote_ok(const struct gfs2_glock *gl) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 281 | { |
| 282 | return !gl->gl_aspace->i_mapping->nrpages; |
| 283 | } |
| 284 | |
| 285 | /** |
| 286 | * rgrp_go_lock - operation done after an rgrp lock is locked by |
| 287 | * a first holder on this node. |
| 288 | * @gl: the glock |
| 289 | * @flags: |
| 290 | * |
| 291 | * Returns: errno |
| 292 | */ |
| 293 | |
| 294 | static int rgrp_go_lock(struct gfs2_holder *gh) |
| 295 | { |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 296 | return gfs2_rgrp_bh_get(gh->gh_gl->gl_object); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 297 | } |
| 298 | |
| 299 | /** |
| 300 | * rgrp_go_unlock - operation done before an rgrp lock is unlocked by |
| 301 | * a last holder on this node. |
| 302 | * @gl: the glock |
| 303 | * @flags: |
| 304 | * |
| 305 | */ |
| 306 | |
| 307 | static void rgrp_go_unlock(struct gfs2_holder *gh) |
| 308 | { |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 309 | gfs2_rgrp_bh_put(gh->gh_gl->gl_object); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 310 | } |
| 311 | |
| 312 | /** |
Steven Whitehouse | 3042a2c | 2007-11-02 08:39:34 +0000 | [diff] [blame] | 313 | * trans_go_sync - promote/demote the transaction glock |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 314 | * @gl: the glock |
| 315 | * @state: the requested state |
| 316 | * @flags: |
| 317 | * |
| 318 | */ |
| 319 | |
Steven Whitehouse | 3042a2c | 2007-11-02 08:39:34 +0000 | [diff] [blame] | 320 | static void trans_go_sync(struct gfs2_glock *gl) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 321 | { |
| 322 | struct gfs2_sbd *sdp = gl->gl_sbd; |
| 323 | |
| 324 | if (gl->gl_state != LM_ST_UNLOCKED && |
| 325 | test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { |
Benjamin Marzinski | b94a170 | 2009-07-23 18:52:34 -0500 | [diff] [blame] | 326 | flush_workqueue(gfs2_delete_workqueue); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 327 | gfs2_meta_syncfs(sdp); |
| 328 | gfs2_log_shutdown(sdp); |
| 329 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 330 | } |
| 331 | |
| 332 | /** |
| 333 | * trans_go_xmote_bh - After promoting/demoting the transaction glock |
| 334 | * @gl: the glock |
| 335 | * |
| 336 | */ |
| 337 | |
Steven Whitehouse | 6802e34 | 2008-05-21 17:03:22 +0100 | [diff] [blame] | 338 | static int trans_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 339 | { |
| 340 | struct gfs2_sbd *sdp = gl->gl_sbd; |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 341 | struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 342 | struct gfs2_glock *j_gl = ip->i_gl; |
Al Viro | 5516762 | 2006-10-13 21:47:13 -0400 | [diff] [blame] | 343 | struct gfs2_log_header_host head; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 344 | int error; |
| 345 | |
Steven Whitehouse | 6802e34 | 2008-05-21 17:03:22 +0100 | [diff] [blame] | 346 | if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { |
Steven Whitehouse | 1a14d3a | 2006-11-20 10:37:45 -0500 | [diff] [blame] | 347 | j_gl->gl_ops->go_inval(j_gl, DIO_METADATA); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 348 | |
| 349 | error = gfs2_find_jhead(sdp->sd_jdesc, &head); |
| 350 | if (error) |
| 351 | gfs2_consist(sdp); |
| 352 | if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) |
| 353 | gfs2_consist(sdp); |
| 354 | |
| 355 | /* Initialize some head of the log stuff */ |
| 356 | if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) { |
| 357 | sdp->sd_log_sequence = head.lh_sequence + 1; |
| 358 | gfs2_log_pointers_init(sdp, head.lh_blkno); |
| 359 | } |
| 360 | } |
Steven Whitehouse | 6802e34 | 2008-05-21 17:03:22 +0100 | [diff] [blame] | 361 | return 0; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 362 | } |
| 363 | |
| 364 | /** |
Steven Whitehouse | 97cc102 | 2008-11-20 13:39:47 +0000 | [diff] [blame] | 365 | * trans_go_demote_ok |
| 366 | * @gl: the glock |
| 367 | * |
| 368 | * Always returns 0 |
| 369 | */ |
| 370 | |
| 371 | static int trans_go_demote_ok(const struct gfs2_glock *gl) |
| 372 | { |
| 373 | return 0; |
| 374 | } |
| 375 | |
Benjamin Marzinski | b94a170 | 2009-07-23 18:52:34 -0500 | [diff] [blame] | 376 | /** |
| 377 | * iopen_go_callback - schedule the dcache entry for the inode to be deleted |
| 378 | * @gl: the glock |
| 379 | * |
| 380 | * gl_spin lock is held while calling this |
| 381 | */ |
| 382 | static void iopen_go_callback(struct gfs2_glock *gl) |
| 383 | { |
| 384 | struct gfs2_inode *ip = (struct gfs2_inode *)gl->gl_object; |
| 385 | |
| 386 | if (gl->gl_demote_state == LM_ST_UNLOCKED && |
| 387 | gl->gl_state == LM_ST_SHARED && |
| 388 | ip && test_bit(GIF_USER, &ip->i_flags)) { |
| 389 | gfs2_glock_hold(gl); |
| 390 | if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0) |
| 391 | gfs2_glock_put_nolock(gl); |
| 392 | } |
| 393 | } |
| 394 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 395 | const struct gfs2_glock_operations gfs2_meta_glops = { |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 396 | .go_type = LM_TYPE_META, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 397 | }; |
| 398 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 399 | const struct gfs2_glock_operations gfs2_inode_glops = { |
Steven Whitehouse | 3042a2c | 2007-11-02 08:39:34 +0000 | [diff] [blame] | 400 | .go_xmote_th = inode_go_sync, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 401 | .go_inval = inode_go_inval, |
| 402 | .go_demote_ok = inode_go_demote_ok, |
| 403 | .go_lock = inode_go_lock, |
Steven Whitehouse | 6802e34 | 2008-05-21 17:03:22 +0100 | [diff] [blame] | 404 | .go_dump = inode_go_dump, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 405 | .go_type = LM_TYPE_INODE, |
Steven Whitehouse | 6802e34 | 2008-05-21 17:03:22 +0100 | [diff] [blame] | 406 | .go_min_hold_time = HZ / 5, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 407 | }; |
| 408 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 409 | const struct gfs2_glock_operations gfs2_rgrp_glops = { |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 410 | .go_xmote_th = rgrp_go_sync, |
| 411 | .go_inval = rgrp_go_inval, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 412 | .go_demote_ok = rgrp_go_demote_ok, |
| 413 | .go_lock = rgrp_go_lock, |
| 414 | .go_unlock = rgrp_go_unlock, |
Steven Whitehouse | 0901097 | 2009-05-20 10:48:47 +0100 | [diff] [blame] | 415 | .go_dump = gfs2_rgrp_dump, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 416 | .go_type = LM_TYPE_RGRP, |
Steven Whitehouse | 6802e34 | 2008-05-21 17:03:22 +0100 | [diff] [blame] | 417 | .go_min_hold_time = HZ / 5, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 418 | }; |
| 419 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 420 | const struct gfs2_glock_operations gfs2_trans_glops = { |
Steven Whitehouse | 3042a2c | 2007-11-02 08:39:34 +0000 | [diff] [blame] | 421 | .go_xmote_th = trans_go_sync, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 422 | .go_xmote_bh = trans_go_xmote_bh, |
Steven Whitehouse | 97cc102 | 2008-11-20 13:39:47 +0000 | [diff] [blame] | 423 | .go_demote_ok = trans_go_demote_ok, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 424 | .go_type = LM_TYPE_NONDISK, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 425 | }; |
| 426 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 427 | const struct gfs2_glock_operations gfs2_iopen_glops = { |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 428 | .go_type = LM_TYPE_IOPEN, |
Benjamin Marzinski | b94a170 | 2009-07-23 18:52:34 -0500 | [diff] [blame] | 429 | .go_callback = iopen_go_callback, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 430 | }; |
| 431 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 432 | const struct gfs2_glock_operations gfs2_flock_glops = { |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 433 | .go_type = LM_TYPE_FLOCK, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 434 | }; |
| 435 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 436 | const struct gfs2_glock_operations gfs2_nondisk_glops = { |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 437 | .go_type = LM_TYPE_NONDISK, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 438 | }; |
| 439 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 440 | const struct gfs2_glock_operations gfs2_quota_glops = { |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 441 | .go_type = LM_TYPE_QUOTA, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 442 | }; |
| 443 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 444 | const struct gfs2_glock_operations gfs2_journal_glops = { |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 445 | .go_type = LM_TYPE_JOURNAL, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 446 | }; |
| 447 | |
Steven Whitehouse | 64d576b | 2009-02-12 13:31:58 +0000 | [diff] [blame] | 448 | const struct gfs2_glock_operations *gfs2_glops_list[] = { |
| 449 | [LM_TYPE_META] = &gfs2_meta_glops, |
| 450 | [LM_TYPE_INODE] = &gfs2_inode_glops, |
| 451 | [LM_TYPE_RGRP] = &gfs2_rgrp_glops, |
| 452 | [LM_TYPE_NONDISK] = &gfs2_trans_glops, |
| 453 | [LM_TYPE_IOPEN] = &gfs2_iopen_glops, |
| 454 | [LM_TYPE_FLOCK] = &gfs2_flock_glops, |
| 455 | [LM_TYPE_NONDISK] = &gfs2_nondisk_glops, |
| 456 | [LM_TYPE_QUOTA] = &gfs2_quota_glops, |
| 457 | [LM_TYPE_JOURNAL] = &gfs2_journal_glops, |
| 458 | }; |
| 459 | |