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/spinlock.h> |
| 11 | #include <linux/completion.h> |
| 12 | #include <linux/buffer_head.h> |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 13 | #include <linux/gfs2_ondisk.h> |
Steven Whitehouse | 6802e34 | 2008-05-21 17:03:22 +0100 | [diff] [blame] | 14 | #include <linux/bio.h> |
Steven Whitehouse | c65f7fb | 2009-10-02 11:54:39 +0100 | [diff] [blame] | 15 | #include <linux/posix_acl.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 | |
Dave Chinner | d6a079e | 2011-03-11 11:52:25 +0000 | [diff] [blame] | 59 | spin_lock(&sdp->sd_ail_lock); |
Steven Whitehouse | ddacfaf | 2006-10-03 11:10:41 -0400 | [diff] [blame] | 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); |
Dave Chinner | d6a079e | 2011-03-11 11:52:25 +0000 | [diff] [blame] | 65 | spin_unlock(&sdp->sd_ail_lock); |
| 66 | |
Steven Whitehouse | 1ad38c4 | 2007-09-03 11:01:33 +0100 | [diff] [blame] | 67 | bd->bd_bh = NULL; |
| 68 | bh->b_private = NULL; |
| 69 | bd->bd_blkno = bh->b_blocknr; |
Dave Chinner | d6a079e | 2011-03-11 11:52:25 +0000 | [diff] [blame] | 70 | gfs2_log_lock(sdp); |
Steven Whitehouse | 1ad38c4 | 2007-09-03 11:01:33 +0100 | [diff] [blame] | 71 | gfs2_assert_withdraw(sdp, !buffer_busy(bh)); |
| 72 | gfs2_trans_add_revoke(sdp, bd); |
Dave Chinner | d6a079e | 2011-03-11 11:52:25 +0000 | [diff] [blame] | 73 | gfs2_log_unlock(sdp); |
| 74 | |
| 75 | spin_lock(&sdp->sd_ail_lock); |
Steven Whitehouse | ddacfaf | 2006-10-03 11:10:41 -0400 | [diff] [blame] | 76 | } |
| 77 | gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count)); |
Dave Chinner | d6a079e | 2011-03-11 11:52:25 +0000 | [diff] [blame] | 78 | spin_unlock(&sdp->sd_ail_lock); |
Steven Whitehouse | ddacfaf | 2006-10-03 11:10:41 -0400 | [diff] [blame] | 79 | |
| 80 | gfs2_trans_end(sdp); |
| 81 | gfs2_log_flush(sdp, NULL); |
| 82 | } |
Steven Whitehouse | ba7f729 | 2006-07-26 11:27:10 -0400 | [diff] [blame] | 83 | |
| 84 | /** |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 85 | * rgrp_go_sync - sync out the metadata for this glock |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 86 | * @gl: the glock |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 87 | * |
| 88 | * Called when demoting or unlocking an EX glock. We must flush |
| 89 | * to disk all dirty buffers/pages relating to this glock, and must not |
| 90 | * not return to caller to demote/unlock the glock until I/O is complete. |
| 91 | */ |
| 92 | |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 93 | static void rgrp_go_sync(struct gfs2_glock *gl) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 94 | { |
Steven Whitehouse | 009d851 | 2009-12-08 12:12:13 +0000 | [diff] [blame] | 95 | struct address_space *metamapping = gfs2_glock2aspace(gl); |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 96 | int error; |
Steven Whitehouse | b5d32be | 2007-01-22 12:15:34 -0500 | [diff] [blame] | 97 | |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 98 | if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) |
| 99 | return; |
| 100 | BUG_ON(gl->gl_state != LM_ST_EXCLUSIVE); |
| 101 | |
| 102 | gfs2_log_flush(gl->gl_sbd, gl); |
| 103 | filemap_fdatawrite(metamapping); |
| 104 | error = filemap_fdatawait(metamapping); |
| 105 | mapping_set_error(metamapping, error); |
| 106 | gfs2_ail_empty_gl(gl); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 107 | } |
| 108 | |
| 109 | /** |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 110 | * rgrp_go_inval - invalidate the metadata for this glock |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 111 | * @gl: the glock |
| 112 | * @flags: |
| 113 | * |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 114 | * We never used LM_ST_DEFERRED with resource groups, so that we |
| 115 | * should always see the metadata flag set here. |
| 116 | * |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 117 | */ |
| 118 | |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 119 | static void rgrp_go_inval(struct gfs2_glock *gl, int flags) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 120 | { |
Steven Whitehouse | 009d851 | 2009-12-08 12:12:13 +0000 | [diff] [blame] | 121 | struct address_space *mapping = gfs2_glock2aspace(gl); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 122 | |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 123 | BUG_ON(!(flags & DIO_METADATA)); |
| 124 | gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count)); |
| 125 | truncate_inode_pages(mapping, 0); |
| 126 | |
| 127 | if (gl->gl_object) { |
Bob Peterson | cf45b75 | 2008-01-31 10:31:39 -0600 | [diff] [blame] | 128 | struct gfs2_rgrpd *rgd = (struct gfs2_rgrpd *)gl->gl_object; |
Bob Peterson | cf45b75 | 2008-01-31 10:31:39 -0600 | [diff] [blame] | 129 | rgd->rd_flags &= ~GFS2_RDF_UPTODATE; |
| 130 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 131 | } |
| 132 | |
| 133 | /** |
Steven Whitehouse | b5d32be | 2007-01-22 12:15:34 -0500 | [diff] [blame] | 134 | * inode_go_sync - Sync the dirty data and/or metadata for an inode glock |
| 135 | * @gl: the glock protecting the inode |
| 136 | * |
| 137 | */ |
| 138 | |
| 139 | static void inode_go_sync(struct gfs2_glock *gl) |
| 140 | { |
| 141 | struct gfs2_inode *ip = gl->gl_object; |
Steven Whitehouse | 009d851 | 2009-12-08 12:12:13 +0000 | [diff] [blame] | 142 | struct address_space *metamapping = gfs2_glock2aspace(gl); |
Steven Whitehouse | 3042a2c | 2007-11-02 08:39:34 +0000 | [diff] [blame] | 143 | int error; |
| 144 | |
Steven Whitehouse | b5d32be | 2007-01-22 12:15:34 -0500 | [diff] [blame] | 145 | if (ip && !S_ISREG(ip->i_inode.i_mode)) |
| 146 | ip = NULL; |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 147 | if (ip && test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags)) |
| 148 | unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0); |
| 149 | if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) |
| 150 | return; |
Steven Whitehouse | b5d32be | 2007-01-22 12:15:34 -0500 | [diff] [blame] | 151 | |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 152 | BUG_ON(gl->gl_state != LM_ST_EXCLUSIVE); |
| 153 | |
| 154 | gfs2_log_flush(gl->gl_sbd, gl); |
| 155 | filemap_fdatawrite(metamapping); |
| 156 | if (ip) { |
| 157 | struct address_space *mapping = ip->i_inode.i_mapping; |
| 158 | filemap_fdatawrite(mapping); |
| 159 | error = filemap_fdatawait(mapping); |
| 160 | mapping_set_error(mapping, error); |
Steven Whitehouse | b5d32be | 2007-01-22 12:15:34 -0500 | [diff] [blame] | 161 | } |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 162 | error = filemap_fdatawait(metamapping); |
| 163 | mapping_set_error(metamapping, error); |
| 164 | gfs2_ail_empty_gl(gl); |
Steven Whitehouse | 52fcd11 | 2009-04-20 08:58:45 +0100 | [diff] [blame] | 165 | /* |
| 166 | * Writeback of the data mapping may cause the dirty flag to be set |
| 167 | * so we have to clear it again here. |
| 168 | */ |
| 169 | smp_mb__before_clear_bit(); |
| 170 | clear_bit(GLF_DIRTY, &gl->gl_flags); |
Steven Whitehouse | b5d32be | 2007-01-22 12:15:34 -0500 | [diff] [blame] | 171 | } |
| 172 | |
| 173 | /** |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 174 | * inode_go_inval - prepare a inode glock to be released |
| 175 | * @gl: the glock |
| 176 | * @flags: |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 177 | * |
| 178 | * Normally we invlidate everything, but if we are moving into |
| 179 | * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we |
| 180 | * can keep hold of the metadata, since it won't have changed. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 181 | * |
| 182 | */ |
| 183 | |
| 184 | static void inode_go_inval(struct gfs2_glock *gl, int flags) |
| 185 | { |
Steven Whitehouse | b004157 | 2006-11-23 10:51:34 -0500 | [diff] [blame] | 186 | struct gfs2_inode *ip = gl->gl_object; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 187 | |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 188 | gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count)); |
| 189 | |
| 190 | if (flags & DIO_METADATA) { |
Steven Whitehouse | 009d851 | 2009-12-08 12:12:13 +0000 | [diff] [blame] | 191 | struct address_space *mapping = gfs2_glock2aspace(gl); |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 192 | truncate_inode_pages(mapping, 0); |
Steven Whitehouse | c65f7fb | 2009-10-02 11:54:39 +0100 | [diff] [blame] | 193 | if (ip) { |
Steven Whitehouse | b004157 | 2006-11-23 10:51:34 -0500 | [diff] [blame] | 194 | set_bit(GIF_INVALID, &ip->i_flags); |
Steven Whitehouse | c65f7fb | 2009-10-02 11:54:39 +0100 | [diff] [blame] | 195 | forget_all_cached_acls(&ip->i_inode); |
| 196 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 197 | } |
Steven Whitehouse | b004157 | 2006-11-23 10:51:34 -0500 | [diff] [blame] | 198 | |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 199 | if (ip == GFS2_I(gl->gl_sbd->sd_rindex)) |
| 200 | gl->gl_sbd->sd_rindex_uptodate = 0; |
Steven Whitehouse | 3cc3f71 | 2007-10-15 15:40:33 +0100 | [diff] [blame] | 201 | if (ip && S_ISREG(ip->i_inode.i_mode)) |
Steven Whitehouse | b004157 | 2006-11-23 10:51:34 -0500 | [diff] [blame] | 202 | truncate_inode_pages(ip->i_inode.i_mapping, 0); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 203 | } |
| 204 | |
| 205 | /** |
| 206 | * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock |
| 207 | * @gl: the glock |
| 208 | * |
| 209 | * Returns: 1 if it's ok |
| 210 | */ |
| 211 | |
Steven Whitehouse | 97cc102 | 2008-11-20 13:39:47 +0000 | [diff] [blame] | 212 | static int inode_go_demote_ok(const struct gfs2_glock *gl) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 213 | { |
| 214 | struct gfs2_sbd *sdp = gl->gl_sbd; |
Steven Whitehouse | bc015cb | 2011-01-19 09:30:01 +0000 | [diff] [blame] | 215 | struct gfs2_holder *gh; |
| 216 | |
Steven Whitehouse | 97cc102 | 2008-11-20 13:39:47 +0000 | [diff] [blame] | 217 | if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object) |
| 218 | return 0; |
Steven Whitehouse | bc015cb | 2011-01-19 09:30:01 +0000 | [diff] [blame] | 219 | |
| 220 | if (!list_empty(&gl->gl_holders)) { |
| 221 | gh = list_entry(gl->gl_holders.next, struct gfs2_holder, gh_list); |
| 222 | if (gh->gh_list.next != &gl->gl_holders) |
| 223 | return 0; |
| 224 | } |
| 225 | |
Steven Whitehouse | 97cc102 | 2008-11-20 13:39:47 +0000 | [diff] [blame] | 226 | return 1; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 227 | } |
| 228 | |
| 229 | /** |
| 230 | * inode_go_lock - operation done after an inode lock is locked by a process |
| 231 | * @gl: the glock |
| 232 | * @flags: |
| 233 | * |
| 234 | * Returns: errno |
| 235 | */ |
| 236 | |
| 237 | static int inode_go_lock(struct gfs2_holder *gh) |
| 238 | { |
| 239 | struct gfs2_glock *gl = gh->gh_gl; |
Steven Whitehouse | 813e0c4 | 2008-11-18 13:38:48 +0000 | [diff] [blame] | 240 | struct gfs2_sbd *sdp = gl->gl_sbd; |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 241 | struct gfs2_inode *ip = gl->gl_object; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 242 | int error = 0; |
| 243 | |
Bob Peterson | 091806ed | 2008-04-29 12:35:48 -0500 | [diff] [blame] | 244 | if (!ip || (gh->gh_flags & GL_SKIP)) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 245 | return 0; |
| 246 | |
Steven Whitehouse | bfded27 | 2006-11-01 16:05:38 -0500 | [diff] [blame] | 247 | if (test_bit(GIF_INVALID, &ip->i_flags)) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 248 | error = gfs2_inode_refresh(ip); |
| 249 | if (error) |
| 250 | return error; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 251 | } |
| 252 | |
Steven Whitehouse | 383f01f | 2008-11-04 10:05:22 +0000 | [diff] [blame] | 253 | if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) && |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 254 | (gl->gl_state == LM_ST_EXCLUSIVE) && |
Steven Whitehouse | 813e0c4 | 2008-11-18 13:38:48 +0000 | [diff] [blame] | 255 | (gh->gh_state == LM_ST_EXCLUSIVE)) { |
| 256 | spin_lock(&sdp->sd_trunc_lock); |
| 257 | if (list_empty(&ip->i_trunc_list)) |
| 258 | list_add(&sdp->sd_trunc_list, &ip->i_trunc_list); |
| 259 | spin_unlock(&sdp->sd_trunc_lock); |
| 260 | wake_up(&sdp->sd_quota_wait); |
| 261 | return 1; |
| 262 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 263 | |
| 264 | return error; |
| 265 | } |
| 266 | |
| 267 | /** |
Steven Whitehouse | 6802e34 | 2008-05-21 17:03:22 +0100 | [diff] [blame] | 268 | * inode_go_dump - print information about an inode |
| 269 | * @seq: The iterator |
| 270 | * @ip: the inode |
| 271 | * |
| 272 | * Returns: 0 on success, -ENOBUFS when we run out of space |
| 273 | */ |
| 274 | |
| 275 | static int inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl) |
| 276 | { |
| 277 | const struct gfs2_inode *ip = gl->gl_object; |
| 278 | if (ip == NULL) |
| 279 | return 0; |
Steven Whitehouse | a2e0f79 | 2010-08-11 09:53:11 +0100 | [diff] [blame] | 280 | gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu\n", |
Steven Whitehouse | 6802e34 | 2008-05-21 17:03:22 +0100 | [diff] [blame] | 281 | (unsigned long long)ip->i_no_formal_ino, |
| 282 | (unsigned long long)ip->i_no_addr, |
Steven Whitehouse | fa75ced | 2008-11-10 10:10:12 +0000 | [diff] [blame] | 283 | IF2DT(ip->i_inode.i_mode), ip->i_flags, |
| 284 | (unsigned int)ip->i_diskflags, |
Steven Whitehouse | a2e0f79 | 2010-08-11 09:53:11 +0100 | [diff] [blame] | 285 | (unsigned long long)i_size_read(&ip->i_inode)); |
Steven Whitehouse | 6802e34 | 2008-05-21 17:03:22 +0100 | [diff] [blame] | 286 | return 0; |
| 287 | } |
| 288 | |
| 289 | /** |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 290 | * rgrp_go_lock - operation done after an rgrp lock is locked by |
| 291 | * a first holder on this node. |
| 292 | * @gl: the glock |
| 293 | * @flags: |
| 294 | * |
| 295 | * Returns: errno |
| 296 | */ |
| 297 | |
| 298 | static int rgrp_go_lock(struct gfs2_holder *gh) |
| 299 | { |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 300 | return gfs2_rgrp_bh_get(gh->gh_gl->gl_object); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 301 | } |
| 302 | |
| 303 | /** |
| 304 | * rgrp_go_unlock - operation done before an rgrp lock is unlocked by |
| 305 | * a last holder on this node. |
| 306 | * @gl: the glock |
| 307 | * @flags: |
| 308 | * |
| 309 | */ |
| 310 | |
| 311 | static void rgrp_go_unlock(struct gfs2_holder *gh) |
| 312 | { |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 313 | gfs2_rgrp_bh_put(gh->gh_gl->gl_object); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 314 | } |
| 315 | |
| 316 | /** |
Steven Whitehouse | 3042a2c | 2007-11-02 08:39:34 +0000 | [diff] [blame] | 317 | * trans_go_sync - promote/demote the transaction glock |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 318 | * @gl: the glock |
| 319 | * @state: the requested state |
| 320 | * @flags: |
| 321 | * |
| 322 | */ |
| 323 | |
Steven Whitehouse | 3042a2c | 2007-11-02 08:39:34 +0000 | [diff] [blame] | 324 | static void trans_go_sync(struct gfs2_glock *gl) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 325 | { |
| 326 | struct gfs2_sbd *sdp = gl->gl_sbd; |
| 327 | |
| 328 | if (gl->gl_state != LM_ST_UNLOCKED && |
| 329 | test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { |
| 330 | gfs2_meta_syncfs(sdp); |
| 331 | gfs2_log_shutdown(sdp); |
| 332 | } |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 333 | } |
| 334 | |
| 335 | /** |
| 336 | * trans_go_xmote_bh - After promoting/demoting the transaction glock |
| 337 | * @gl: the glock |
| 338 | * |
| 339 | */ |
| 340 | |
Steven Whitehouse | 6802e34 | 2008-05-21 17:03:22 +0100 | [diff] [blame] | 341 | 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] | 342 | { |
| 343 | struct gfs2_sbd *sdp = gl->gl_sbd; |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 344 | struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 345 | struct gfs2_glock *j_gl = ip->i_gl; |
Al Viro | 5516762 | 2006-10-13 21:47:13 -0400 | [diff] [blame] | 346 | struct gfs2_log_header_host head; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 347 | int error; |
| 348 | |
Steven Whitehouse | 6802e34 | 2008-05-21 17:03:22 +0100 | [diff] [blame] | 349 | if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { |
Steven Whitehouse | 1a14d3a | 2006-11-20 10:37:45 -0500 | [diff] [blame] | 350 | j_gl->gl_ops->go_inval(j_gl, DIO_METADATA); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 351 | |
| 352 | error = gfs2_find_jhead(sdp->sd_jdesc, &head); |
| 353 | if (error) |
| 354 | gfs2_consist(sdp); |
| 355 | if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) |
| 356 | gfs2_consist(sdp); |
| 357 | |
| 358 | /* Initialize some head of the log stuff */ |
| 359 | if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) { |
| 360 | sdp->sd_log_sequence = head.lh_sequence + 1; |
| 361 | gfs2_log_pointers_init(sdp, head.lh_blkno); |
| 362 | } |
| 363 | } |
Steven Whitehouse | 6802e34 | 2008-05-21 17:03:22 +0100 | [diff] [blame] | 364 | return 0; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 365 | } |
| 366 | |
| 367 | /** |
Steven Whitehouse | 97cc102 | 2008-11-20 13:39:47 +0000 | [diff] [blame] | 368 | * trans_go_demote_ok |
| 369 | * @gl: the glock |
| 370 | * |
| 371 | * Always returns 0 |
| 372 | */ |
| 373 | |
| 374 | static int trans_go_demote_ok(const struct gfs2_glock *gl) |
| 375 | { |
| 376 | return 0; |
| 377 | } |
| 378 | |
Benjamin Marzinski | b94a170 | 2009-07-23 18:52:34 -0500 | [diff] [blame] | 379 | /** |
| 380 | * iopen_go_callback - schedule the dcache entry for the inode to be deleted |
| 381 | * @gl: the glock |
| 382 | * |
| 383 | * gl_spin lock is held while calling this |
| 384 | */ |
| 385 | static void iopen_go_callback(struct gfs2_glock *gl) |
| 386 | { |
| 387 | struct gfs2_inode *ip = (struct gfs2_inode *)gl->gl_object; |
| 388 | |
| 389 | if (gl->gl_demote_state == LM_ST_UNLOCKED && |
Steven Whitehouse | 009d851 | 2009-12-08 12:12:13 +0000 | [diff] [blame] | 390 | gl->gl_state == LM_ST_SHARED && ip) { |
Benjamin Marzinski | b94a170 | 2009-07-23 18:52:34 -0500 | [diff] [blame] | 391 | gfs2_glock_hold(gl); |
| 392 | if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0) |
| 393 | gfs2_glock_put_nolock(gl); |
| 394 | } |
| 395 | } |
| 396 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 397 | const struct gfs2_glock_operations gfs2_meta_glops = { |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 398 | .go_type = LM_TYPE_META, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 399 | }; |
| 400 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 401 | const struct gfs2_glock_operations gfs2_inode_glops = { |
Steven Whitehouse | 3042a2c | 2007-11-02 08:39:34 +0000 | [diff] [blame] | 402 | .go_xmote_th = inode_go_sync, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 403 | .go_inval = inode_go_inval, |
| 404 | .go_demote_ok = inode_go_demote_ok, |
| 405 | .go_lock = inode_go_lock, |
Steven Whitehouse | 6802e34 | 2008-05-21 17:03:22 +0100 | [diff] [blame] | 406 | .go_dump = inode_go_dump, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 407 | .go_type = LM_TYPE_INODE, |
Steven Whitehouse | 6802e34 | 2008-05-21 17:03:22 +0100 | [diff] [blame] | 408 | .go_min_hold_time = HZ / 5, |
Steven Whitehouse | 009d851 | 2009-12-08 12:12:13 +0000 | [diff] [blame] | 409 | .go_flags = GLOF_ASPACE, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 410 | }; |
| 411 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 412 | const struct gfs2_glock_operations gfs2_rgrp_glops = { |
Steven Whitehouse | 6bac243 | 2009-03-09 09:03:51 +0000 | [diff] [blame] | 413 | .go_xmote_th = rgrp_go_sync, |
| 414 | .go_inval = rgrp_go_inval, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 415 | .go_lock = rgrp_go_lock, |
| 416 | .go_unlock = rgrp_go_unlock, |
Steven Whitehouse | 0901097 | 2009-05-20 10:48:47 +0100 | [diff] [blame] | 417 | .go_dump = gfs2_rgrp_dump, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 418 | .go_type = LM_TYPE_RGRP, |
Steven Whitehouse | 6802e34 | 2008-05-21 17:03:22 +0100 | [diff] [blame] | 419 | .go_min_hold_time = HZ / 5, |
Steven Whitehouse | 009d851 | 2009-12-08 12:12:13 +0000 | [diff] [blame] | 420 | .go_flags = GLOF_ASPACE, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 421 | }; |
| 422 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 423 | const struct gfs2_glock_operations gfs2_trans_glops = { |
Steven Whitehouse | 3042a2c | 2007-11-02 08:39:34 +0000 | [diff] [blame] | 424 | .go_xmote_th = trans_go_sync, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 425 | .go_xmote_bh = trans_go_xmote_bh, |
Steven Whitehouse | 97cc102 | 2008-11-20 13:39:47 +0000 | [diff] [blame] | 426 | .go_demote_ok = trans_go_demote_ok, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 427 | .go_type = LM_TYPE_NONDISK, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 428 | }; |
| 429 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 430 | const struct gfs2_glock_operations gfs2_iopen_glops = { |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 431 | .go_type = LM_TYPE_IOPEN, |
Benjamin Marzinski | b94a170 | 2009-07-23 18:52:34 -0500 | [diff] [blame] | 432 | .go_callback = iopen_go_callback, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 433 | }; |
| 434 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 435 | const struct gfs2_glock_operations gfs2_flock_glops = { |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 436 | .go_type = LM_TYPE_FLOCK, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 437 | }; |
| 438 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 439 | const struct gfs2_glock_operations gfs2_nondisk_glops = { |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 440 | .go_type = LM_TYPE_NONDISK, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 441 | }; |
| 442 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 443 | const struct gfs2_glock_operations gfs2_quota_glops = { |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 444 | .go_type = LM_TYPE_QUOTA, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 445 | }; |
| 446 | |
Steven Whitehouse | 8fb4b53 | 2006-08-30 09:30:00 -0400 | [diff] [blame] | 447 | const struct gfs2_glock_operations gfs2_journal_glops = { |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 448 | .go_type = LM_TYPE_JOURNAL, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 449 | }; |
| 450 | |
Steven Whitehouse | 64d576b | 2009-02-12 13:31:58 +0000 | [diff] [blame] | 451 | const struct gfs2_glock_operations *gfs2_glops_list[] = { |
| 452 | [LM_TYPE_META] = &gfs2_meta_glops, |
| 453 | [LM_TYPE_INODE] = &gfs2_inode_glops, |
| 454 | [LM_TYPE_RGRP] = &gfs2_rgrp_glops, |
Steven Whitehouse | 64d576b | 2009-02-12 13:31:58 +0000 | [diff] [blame] | 455 | [LM_TYPE_IOPEN] = &gfs2_iopen_glops, |
| 456 | [LM_TYPE_FLOCK] = &gfs2_flock_glops, |
| 457 | [LM_TYPE_NONDISK] = &gfs2_nondisk_glops, |
| 458 | [LM_TYPE_QUOTA] = &gfs2_quota_glops, |
| 459 | [LM_TYPE_JOURNAL] = &gfs2_journal_glops, |
| 460 | }; |
| 461 | |