blob: 4bdcf3784187863b0d7f2379981bc9aad1908495 [file] [log] [blame]
David Teiglandb3b94fa2006-01-16 16:50:04 +00001/*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
Bob Petersoncf45b752008-01-31 10:31:39 -06003 * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
David Teiglandb3b94fa2006-01-16 16:50:04 +00004 *
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 Whitehousee9fc2aa2006-09-01 11:05:15 -04007 * of the GNU General Public License version 2.
David Teiglandb3b94fa2006-01-16 16:50:04 +00008 */
9
David Teiglandb3b94fa2006-01-16 16:50:04 +000010#include <linux/spinlock.h>
11#include <linux/completion.h>
12#include <linux/buffer_head.h>
Steven Whitehouse5c676f62006-02-27 17:23:27 -050013#include <linux/gfs2_ondisk.h>
Steven Whitehouse6802e342008-05-21 17:03:22 +010014#include <linux/bio.h>
Steven Whitehousec65f7fb2009-10-02 11:54:39 +010015#include <linux/posix_acl.h>
David Teiglandb3b94fa2006-01-16 16:50:04 +000016
17#include "gfs2.h"
Steven Whitehouse5c676f62006-02-27 17:23:27 -050018#include "incore.h"
David Teiglandb3b94fa2006-01-16 16:50:04 +000019#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 Teiglandb3b94fa2006-01-16 16:50:04 +000025#include "recovery.h"
26#include "rgrp.h"
Steven Whitehouse5c676f62006-02-27 17:23:27 -050027#include "util.h"
Steven Whitehouseddacfaf2006-10-03 11:10:41 -040028#include "trans.h"
Steven Whitehouse17d539f2011-06-15 10:29:37 +010029#include "dir.h"
David Teiglandb3b94fa2006-01-16 16:50:04 +000030
Steven Whitehouse75549182011-08-02 13:09:36 +010031static void gfs2_ail_error(struct gfs2_glock *gl, const struct buffer_head *bh)
32{
33 fs_err(gl->gl_sbd, "AIL buffer %p: blocknr %llu state 0x%08lx mapping %p page state 0x%lx\n",
34 bh, (unsigned long long)bh->b_blocknr, bh->b_state,
35 bh->b_page->mapping, bh->b_page->flags);
36 fs_err(gl->gl_sbd, "AIL glock %u:%llu mapping %p\n",
37 gl->gl_name.ln_type, gl->gl_name.ln_number,
38 gfs2_glock2aspace(gl));
39 gfs2_lm_withdraw(gl->gl_sbd, "AIL error\n");
40}
41
Steven Whitehouseddacfaf2006-10-03 11:10:41 -040042/**
Steven Whitehousedba898b2011-04-14 09:54:02 +010043 * __gfs2_ail_flush - remove all buffers for a given lock from the AIL
Steven Whitehouseddacfaf2006-10-03 11:10:41 -040044 * @gl: the glock
Steven Whitehouseb5b24d72011-09-07 10:33:25 +010045 * @fsync: set when called from fsync (not all buffers will be clean)
Steven Whitehouseddacfaf2006-10-03 11:10:41 -040046 *
47 * None of the buffers should be dirty, locked, or pinned.
48 */
49
Steven Whitehouseb5b24d72011-09-07 10:33:25 +010050static void __gfs2_ail_flush(struct gfs2_glock *gl, bool fsync)
Steven Whitehouseddacfaf2006-10-03 11:10:41 -040051{
52 struct gfs2_sbd *sdp = gl->gl_sbd;
Steven Whitehouseddacfaf2006-10-03 11:10:41 -040053 struct list_head *head = &gl->gl_ail_list;
Steven Whitehouseb5b24d72011-09-07 10:33:25 +010054 struct gfs2_bufdata *bd, *tmp;
Steven Whitehouseddacfaf2006-10-03 11:10:41 -040055 struct buffer_head *bh;
Steven Whitehouseb5b24d72011-09-07 10:33:25 +010056 const unsigned long b_state = (1UL << BH_Dirty)|(1UL << BH_Pinned)|(1UL << BH_Lock);
Steven Whitehouse75549182011-08-02 13:09:36 +010057 sector_t blocknr;
Steven Whitehouseddacfaf2006-10-03 11:10:41 -040058
Steven Whitehouseb5b24d72011-09-07 10:33:25 +010059 gfs2_log_lock(sdp);
Dave Chinnerd6a079e2011-03-11 11:52:25 +000060 spin_lock(&sdp->sd_ail_lock);
Steven Whitehouseb5b24d72011-09-07 10:33:25 +010061 list_for_each_entry_safe(bd, tmp, head, bd_ail_gl_list) {
Steven Whitehouseddacfaf2006-10-03 11:10:41 -040062 bh = bd->bd_bh;
Steven Whitehouseb5b24d72011-09-07 10:33:25 +010063 if (bh->b_state & b_state) {
64 if (fsync)
65 continue;
Steven Whitehouse75549182011-08-02 13:09:36 +010066 gfs2_ail_error(gl, bh);
Steven Whitehouseb5b24d72011-09-07 10:33:25 +010067 }
68 blocknr = bh->b_blocknr;
Steven Whitehouse1ad38c42007-09-03 11:01:33 +010069 bh->b_private = NULL;
Steven Whitehouse75549182011-08-02 13:09:36 +010070 gfs2_remove_from_ail(bd); /* drops ref on bh */
Steven Whitehouse380f7c62011-07-14 08:59:44 +010071
Steven Whitehouse75549182011-08-02 13:09:36 +010072 bd->bd_bh = NULL;
73 bd->bd_blkno = blocknr;
74
Steven Whitehouse1ad38c42007-09-03 11:01:33 +010075 gfs2_trans_add_revoke(sdp, bd);
Steven Whitehouseddacfaf2006-10-03 11:10:41 -040076 }
Steven Whitehouseb5b24d72011-09-07 10:33:25 +010077 BUG_ON(!fsync && atomic_read(&gl->gl_ail_count));
Dave Chinnerd6a079e2011-03-11 11:52:25 +000078 spin_unlock(&sdp->sd_ail_lock);
Steven Whitehouseb5b24d72011-09-07 10:33:25 +010079 gfs2_log_unlock(sdp);
Steven Whitehousedba898b2011-04-14 09:54:02 +010080}
Steven Whitehouseddacfaf2006-10-03 11:10:41 -040081
Steven Whitehousedba898b2011-04-14 09:54:02 +010082
83static void gfs2_ail_empty_gl(struct gfs2_glock *gl)
84{
85 struct gfs2_sbd *sdp = gl->gl_sbd;
86 struct gfs2_trans tr;
87
88 memset(&tr, 0, sizeof(tr));
89 tr.tr_revokes = atomic_read(&gl->gl_ail_count);
90
91 if (!tr.tr_revokes)
92 return;
93
94 /* A shortened, inline version of gfs2_trans_begin() */
95 tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64));
96 tr.tr_ip = (unsigned long)__builtin_return_address(0);
Steven Whitehousedba898b2011-04-14 09:54:02 +010097 gfs2_log_reserve(sdp, tr.tr_reserved);
98 BUG_ON(current->journal_info);
99 current->journal_info = &tr;
100
Steven Whitehouseb5b24d72011-09-07 10:33:25 +0100101 __gfs2_ail_flush(gl, 0);
Steven Whitehousedba898b2011-04-14 09:54:02 +0100102
103 gfs2_trans_end(sdp);
104 gfs2_log_flush(sdp, NULL);
105}
106
Steven Whitehouseb5b24d72011-09-07 10:33:25 +0100107void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync)
Steven Whitehousedba898b2011-04-14 09:54:02 +0100108{
109 struct gfs2_sbd *sdp = gl->gl_sbd;
110 unsigned int revokes = atomic_read(&gl->gl_ail_count);
111 int ret;
112
113 if (!revokes)
114 return;
115
116 ret = gfs2_trans_begin(sdp, 0, revokes);
117 if (ret)
118 return;
Steven Whitehouseb5b24d72011-09-07 10:33:25 +0100119 __gfs2_ail_flush(gl, fsync);
Steven Whitehouseddacfaf2006-10-03 11:10:41 -0400120 gfs2_trans_end(sdp);
121 gfs2_log_flush(sdp, NULL);
122}
Steven Whitehouseba7f7292006-07-26 11:27:10 -0400123
124/**
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000125 * rgrp_go_sync - sync out the metadata for this glock
David Teiglandb3b94fa2006-01-16 16:50:04 +0000126 * @gl: the glock
David Teiglandb3b94fa2006-01-16 16:50:04 +0000127 *
128 * Called when demoting or unlocking an EX glock. We must flush
129 * to disk all dirty buffers/pages relating to this glock, and must not
130 * not return to caller to demote/unlock the glock until I/O is complete.
131 */
132
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000133static void rgrp_go_sync(struct gfs2_glock *gl)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000134{
Steven Whitehouse009d8512009-12-08 12:12:13 +0000135 struct address_space *metamapping = gfs2_glock2aspace(gl);
Steven Whitehouse8339ee52011-08-31 16:38:29 +0100136 struct gfs2_rgrpd *rgd;
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000137 int error;
Steven Whitehouseb5d32be2007-01-22 12:15:34 -0500138
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000139 if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
140 return;
141 BUG_ON(gl->gl_state != LM_ST_EXCLUSIVE);
142
143 gfs2_log_flush(gl->gl_sbd, gl);
144 filemap_fdatawrite(metamapping);
145 error = filemap_fdatawait(metamapping);
146 mapping_set_error(metamapping, error);
147 gfs2_ail_empty_gl(gl);
Bob Peterson7c9ca622011-08-31 09:53:19 +0100148
Steven Whitehouse8339ee52011-08-31 16:38:29 +0100149 spin_lock(&gl->gl_spin);
150 rgd = gl->gl_object;
151 if (rgd)
152 gfs2_free_clones(rgd);
153 spin_unlock(&gl->gl_spin);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000154}
155
156/**
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000157 * rgrp_go_inval - invalidate the metadata for this glock
David Teiglandb3b94fa2006-01-16 16:50:04 +0000158 * @gl: the glock
159 * @flags:
160 *
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000161 * We never used LM_ST_DEFERRED with resource groups, so that we
162 * should always see the metadata flag set here.
163 *
David Teiglandb3b94fa2006-01-16 16:50:04 +0000164 */
165
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000166static void rgrp_go_inval(struct gfs2_glock *gl, int flags)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000167{
Steven Whitehouse009d8512009-12-08 12:12:13 +0000168 struct address_space *mapping = gfs2_glock2aspace(gl);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000169
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000170 BUG_ON(!(flags & DIO_METADATA));
171 gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count));
172 truncate_inode_pages(mapping, 0);
173
174 if (gl->gl_object) {
Bob Petersoncf45b752008-01-31 10:31:39 -0600175 struct gfs2_rgrpd *rgd = (struct gfs2_rgrpd *)gl->gl_object;
Bob Petersoncf45b752008-01-31 10:31:39 -0600176 rgd->rd_flags &= ~GFS2_RDF_UPTODATE;
177 }
David Teiglandb3b94fa2006-01-16 16:50:04 +0000178}
179
180/**
Steven Whitehouseb5d32be2007-01-22 12:15:34 -0500181 * inode_go_sync - Sync the dirty data and/or metadata for an inode glock
182 * @gl: the glock protecting the inode
183 *
184 */
185
186static void inode_go_sync(struct gfs2_glock *gl)
187{
188 struct gfs2_inode *ip = gl->gl_object;
Steven Whitehouse009d8512009-12-08 12:12:13 +0000189 struct address_space *metamapping = gfs2_glock2aspace(gl);
Steven Whitehouse3042a2c2007-11-02 08:39:34 +0000190 int error;
191
Steven Whitehouseb5d32be2007-01-22 12:15:34 -0500192 if (ip && !S_ISREG(ip->i_inode.i_mode))
193 ip = NULL;
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000194 if (ip && test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags))
195 unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0);
196 if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
197 return;
Steven Whitehouseb5d32be2007-01-22 12:15:34 -0500198
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000199 BUG_ON(gl->gl_state != LM_ST_EXCLUSIVE);
200
201 gfs2_log_flush(gl->gl_sbd, gl);
202 filemap_fdatawrite(metamapping);
203 if (ip) {
204 struct address_space *mapping = ip->i_inode.i_mapping;
205 filemap_fdatawrite(mapping);
206 error = filemap_fdatawait(mapping);
207 mapping_set_error(mapping, error);
Steven Whitehouseb5d32be2007-01-22 12:15:34 -0500208 }
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000209 error = filemap_fdatawait(metamapping);
210 mapping_set_error(metamapping, error);
211 gfs2_ail_empty_gl(gl);
Steven Whitehouse52fcd112009-04-20 08:58:45 +0100212 /*
213 * Writeback of the data mapping may cause the dirty flag to be set
214 * so we have to clear it again here.
215 */
216 smp_mb__before_clear_bit();
217 clear_bit(GLF_DIRTY, &gl->gl_flags);
Steven Whitehouseb5d32be2007-01-22 12:15:34 -0500218}
219
220/**
David Teiglandb3b94fa2006-01-16 16:50:04 +0000221 * inode_go_inval - prepare a inode glock to be released
222 * @gl: the glock
223 * @flags:
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000224 *
225 * Normally we invlidate everything, but if we are moving into
226 * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we
227 * can keep hold of the metadata, since it won't have changed.
David Teiglandb3b94fa2006-01-16 16:50:04 +0000228 *
229 */
230
231static void inode_go_inval(struct gfs2_glock *gl, int flags)
232{
Steven Whitehouseb0041572006-11-23 10:51:34 -0500233 struct gfs2_inode *ip = gl->gl_object;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000234
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000235 gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count));
236
237 if (flags & DIO_METADATA) {
Steven Whitehouse009d8512009-12-08 12:12:13 +0000238 struct address_space *mapping = gfs2_glock2aspace(gl);
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000239 truncate_inode_pages(mapping, 0);
Steven Whitehousec65f7fb2009-10-02 11:54:39 +0100240 if (ip) {
Steven Whitehouseb0041572006-11-23 10:51:34 -0500241 set_bit(GIF_INVALID, &ip->i_flags);
Steven Whitehousec65f7fb2009-10-02 11:54:39 +0100242 forget_all_cached_acls(&ip->i_inode);
Steven Whitehouse17d539f2011-06-15 10:29:37 +0100243 gfs2_dir_hash_inval(ip);
Steven Whitehousec65f7fb2009-10-02 11:54:39 +0100244 }
David Teiglandb3b94fa2006-01-16 16:50:04 +0000245 }
Steven Whitehouseb0041572006-11-23 10:51:34 -0500246
Benjamin Marzinski1ce53362011-06-13 14:27:40 -0500247 if (ip == GFS2_I(gl->gl_sbd->sd_rindex)) {
248 gfs2_log_flush(gl->gl_sbd, NULL);
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000249 gl->gl_sbd->sd_rindex_uptodate = 0;
Benjamin Marzinski1ce53362011-06-13 14:27:40 -0500250 }
Steven Whitehouse3cc3f712007-10-15 15:40:33 +0100251 if (ip && S_ISREG(ip->i_inode.i_mode))
Steven Whitehouseb0041572006-11-23 10:51:34 -0500252 truncate_inode_pages(ip->i_inode.i_mapping, 0);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000253}
254
255/**
256 * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock
257 * @gl: the glock
258 *
259 * Returns: 1 if it's ok
260 */
261
Steven Whitehouse97cc1022008-11-20 13:39:47 +0000262static int inode_go_demote_ok(const struct gfs2_glock *gl)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000263{
264 struct gfs2_sbd *sdp = gl->gl_sbd;
Steven Whitehousebc015cb2011-01-19 09:30:01 +0000265 struct gfs2_holder *gh;
266
Steven Whitehouse97cc1022008-11-20 13:39:47 +0000267 if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object)
268 return 0;
Steven Whitehousebc015cb2011-01-19 09:30:01 +0000269
270 if (!list_empty(&gl->gl_holders)) {
271 gh = list_entry(gl->gl_holders.next, struct gfs2_holder, gh_list);
272 if (gh->gh_list.next != &gl->gl_holders)
273 return 0;
274 }
275
Steven Whitehouse97cc1022008-11-20 13:39:47 +0000276 return 1;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000277}
278
279/**
Steven Whitehoused4b2cf12011-05-09 13:49:59 +0100280 * gfs2_set_nlink - Set the inode's link count based on on-disk info
281 * @inode: The inode in question
282 * @nlink: The link count
283 *
284 * If the link count has hit zero, it must never be raised, whatever the
285 * on-disk inode might say. When new struct inodes are created the link
286 * count is set to 1, so that we can safely use this test even when reading
287 * in on disk information for the first time.
288 */
289
290static void gfs2_set_nlink(struct inode *inode, u32 nlink)
291{
292 /*
293 * We will need to review setting the nlink count here in the
294 * light of the forthcoming ro bind mount work. This is a reminder
295 * to do that.
296 */
297 if ((inode->i_nlink != nlink) && (inode->i_nlink != 0)) {
298 if (nlink == 0)
299 clear_nlink(inode);
300 else
Miklos Szeredibfe86842011-10-28 14:13:29 +0200301 set_nlink(inode, nlink);
Steven Whitehoused4b2cf12011-05-09 13:49:59 +0100302 }
303}
304
305static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
306{
307 const struct gfs2_dinode *str = buf;
308 struct timespec atime;
309 u16 height, depth;
310
311 if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)))
312 goto corrupt;
313 ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino);
314 ip->i_inode.i_mode = be32_to_cpu(str->di_mode);
315 ip->i_inode.i_rdev = 0;
316 switch (ip->i_inode.i_mode & S_IFMT) {
317 case S_IFBLK:
318 case S_IFCHR:
319 ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major),
320 be32_to_cpu(str->di_minor));
321 break;
322 };
323
324 ip->i_inode.i_uid = be32_to_cpu(str->di_uid);
325 ip->i_inode.i_gid = be32_to_cpu(str->di_gid);
326 gfs2_set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink));
327 i_size_write(&ip->i_inode, be64_to_cpu(str->di_size));
328 gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks));
329 atime.tv_sec = be64_to_cpu(str->di_atime);
330 atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
331 if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0)
332 ip->i_inode.i_atime = atime;
333 ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime);
334 ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec);
335 ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime);
336 ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec);
337
338 ip->i_goal = be64_to_cpu(str->di_goal_meta);
339 ip->i_generation = be64_to_cpu(str->di_generation);
340
341 ip->i_diskflags = be32_to_cpu(str->di_flags);
Steven Whitehouse9964afb2011-06-16 14:06:55 +0100342 ip->i_eattr = be64_to_cpu(str->di_eattr);
343 /* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */
Steven Whitehoused4b2cf12011-05-09 13:49:59 +0100344 gfs2_set_inode_flags(&ip->i_inode);
345 height = be16_to_cpu(str->di_height);
346 if (unlikely(height > GFS2_MAX_META_HEIGHT))
347 goto corrupt;
348 ip->i_height = (u8)height;
349
350 depth = be16_to_cpu(str->di_depth);
351 if (unlikely(depth > GFS2_DIR_MAX_DEPTH))
352 goto corrupt;
353 ip->i_depth = (u8)depth;
354 ip->i_entries = be32_to_cpu(str->di_entries);
355
Steven Whitehoused4b2cf12011-05-09 13:49:59 +0100356 if (S_ISREG(ip->i_inode.i_mode))
357 gfs2_set_aops(&ip->i_inode);
358
359 return 0;
360corrupt:
361 gfs2_consist_inode(ip);
362 return -EIO;
363}
364
365/**
366 * gfs2_inode_refresh - Refresh the incore copy of the dinode
367 * @ip: The GFS2 inode
368 *
369 * Returns: errno
370 */
371
372int gfs2_inode_refresh(struct gfs2_inode *ip)
373{
374 struct buffer_head *dibh;
375 int error;
376
377 error = gfs2_meta_inode_buffer(ip, &dibh);
378 if (error)
379 return error;
380
Steven Whitehoused4b2cf12011-05-09 13:49:59 +0100381 error = gfs2_dinode_in(ip, dibh->b_data);
382 brelse(dibh);
383 clear_bit(GIF_INVALID, &ip->i_flags);
384
385 return error;
386}
387
388/**
David Teiglandb3b94fa2006-01-16 16:50:04 +0000389 * inode_go_lock - operation done after an inode lock is locked by a process
390 * @gl: the glock
391 * @flags:
392 *
393 * Returns: errno
394 */
395
396static int inode_go_lock(struct gfs2_holder *gh)
397{
398 struct gfs2_glock *gl = gh->gh_gl;
Steven Whitehouse813e0c42008-11-18 13:38:48 +0000399 struct gfs2_sbd *sdp = gl->gl_sbd;
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500400 struct gfs2_inode *ip = gl->gl_object;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000401 int error = 0;
402
Bob Peterson091806ed2008-04-29 12:35:48 -0500403 if (!ip || (gh->gh_flags & GL_SKIP))
David Teiglandb3b94fa2006-01-16 16:50:04 +0000404 return 0;
405
Steven Whitehousebfded272006-11-01 16:05:38 -0500406 if (test_bit(GIF_INVALID, &ip->i_flags)) {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000407 error = gfs2_inode_refresh(ip);
408 if (error)
409 return error;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000410 }
411
Steven Whitehouse383f01f2008-11-04 10:05:22 +0000412 if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) &&
David Teiglandb3b94fa2006-01-16 16:50:04 +0000413 (gl->gl_state == LM_ST_EXCLUSIVE) &&
Steven Whitehouse813e0c42008-11-18 13:38:48 +0000414 (gh->gh_state == LM_ST_EXCLUSIVE)) {
415 spin_lock(&sdp->sd_trunc_lock);
416 if (list_empty(&ip->i_trunc_list))
417 list_add(&sdp->sd_trunc_list, &ip->i_trunc_list);
418 spin_unlock(&sdp->sd_trunc_lock);
419 wake_up(&sdp->sd_quota_wait);
420 return 1;
421 }
David Teiglandb3b94fa2006-01-16 16:50:04 +0000422
423 return error;
424}
425
426/**
Steven Whitehouse6802e342008-05-21 17:03:22 +0100427 * inode_go_dump - print information about an inode
428 * @seq: The iterator
429 * @ip: the inode
430 *
431 * Returns: 0 on success, -ENOBUFS when we run out of space
432 */
433
434static int inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl)
435{
436 const struct gfs2_inode *ip = gl->gl_object;
437 if (ip == NULL)
438 return 0;
Steven Whitehousea2e0f792010-08-11 09:53:11 +0100439 gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu\n",
Steven Whitehouse6802e342008-05-21 17:03:22 +0100440 (unsigned long long)ip->i_no_formal_ino,
441 (unsigned long long)ip->i_no_addr,
Steven Whitehousefa75ced2008-11-10 10:10:12 +0000442 IF2DT(ip->i_inode.i_mode), ip->i_flags,
443 (unsigned int)ip->i_diskflags,
Steven Whitehousea2e0f792010-08-11 09:53:11 +0100444 (unsigned long long)i_size_read(&ip->i_inode));
Steven Whitehouse6802e342008-05-21 17:03:22 +0100445 return 0;
446}
447
448/**
Steven Whitehouse3042a2c2007-11-02 08:39:34 +0000449 * trans_go_sync - promote/demote the transaction glock
David Teiglandb3b94fa2006-01-16 16:50:04 +0000450 * @gl: the glock
451 * @state: the requested state
452 * @flags:
453 *
454 */
455
Steven Whitehouse3042a2c2007-11-02 08:39:34 +0000456static void trans_go_sync(struct gfs2_glock *gl)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000457{
458 struct gfs2_sbd *sdp = gl->gl_sbd;
459
460 if (gl->gl_state != LM_ST_UNLOCKED &&
461 test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
462 gfs2_meta_syncfs(sdp);
463 gfs2_log_shutdown(sdp);
464 }
David Teiglandb3b94fa2006-01-16 16:50:04 +0000465}
466
467/**
468 * trans_go_xmote_bh - After promoting/demoting the transaction glock
469 * @gl: the glock
470 *
471 */
472
Steven Whitehouse6802e342008-05-21 17:03:22 +0100473static int trans_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000474{
475 struct gfs2_sbd *sdp = gl->gl_sbd;
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400476 struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode);
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500477 struct gfs2_glock *j_gl = ip->i_gl;
Al Viro55167622006-10-13 21:47:13 -0400478 struct gfs2_log_header_host head;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000479 int error;
480
Steven Whitehouse6802e342008-05-21 17:03:22 +0100481 if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
Steven Whitehouse1a14d3a2006-11-20 10:37:45 -0500482 j_gl->gl_ops->go_inval(j_gl, DIO_METADATA);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000483
484 error = gfs2_find_jhead(sdp->sd_jdesc, &head);
485 if (error)
486 gfs2_consist(sdp);
487 if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT))
488 gfs2_consist(sdp);
489
490 /* Initialize some head of the log stuff */
491 if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) {
492 sdp->sd_log_sequence = head.lh_sequence + 1;
493 gfs2_log_pointers_init(sdp, head.lh_blkno);
494 }
495 }
Steven Whitehouse6802e342008-05-21 17:03:22 +0100496 return 0;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000497}
498
499/**
Steven Whitehouse97cc1022008-11-20 13:39:47 +0000500 * trans_go_demote_ok
501 * @gl: the glock
502 *
503 * Always returns 0
504 */
505
506static int trans_go_demote_ok(const struct gfs2_glock *gl)
507{
508 return 0;
509}
510
Benjamin Marzinskib94a1702009-07-23 18:52:34 -0500511/**
512 * iopen_go_callback - schedule the dcache entry for the inode to be deleted
513 * @gl: the glock
514 *
515 * gl_spin lock is held while calling this
516 */
517static void iopen_go_callback(struct gfs2_glock *gl)
518{
519 struct gfs2_inode *ip = (struct gfs2_inode *)gl->gl_object;
Steven Whitehouse001e8e82011-03-30 14:17:51 +0100520 struct gfs2_sbd *sdp = gl->gl_sbd;
521
522 if (sdp->sd_vfs->s_flags & MS_RDONLY)
523 return;
Benjamin Marzinskib94a1702009-07-23 18:52:34 -0500524
525 if (gl->gl_demote_state == LM_ST_UNLOCKED &&
Steven Whitehouse009d8512009-12-08 12:12:13 +0000526 gl->gl_state == LM_ST_SHARED && ip) {
Benjamin Marzinskib94a1702009-07-23 18:52:34 -0500527 gfs2_glock_hold(gl);
528 if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0)
529 gfs2_glock_put_nolock(gl);
530 }
531}
532
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400533const struct gfs2_glock_operations gfs2_meta_glops = {
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400534 .go_type = LM_TYPE_META,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000535};
536
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400537const struct gfs2_glock_operations gfs2_inode_glops = {
Steven Whitehouse3042a2c2007-11-02 08:39:34 +0000538 .go_xmote_th = inode_go_sync,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000539 .go_inval = inode_go_inval,
540 .go_demote_ok = inode_go_demote_ok,
541 .go_lock = inode_go_lock,
Steven Whitehouse6802e342008-05-21 17:03:22 +0100542 .go_dump = inode_go_dump,
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400543 .go_type = LM_TYPE_INODE,
Steven Whitehouse009d8512009-12-08 12:12:13 +0000544 .go_flags = GLOF_ASPACE,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000545};
546
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400547const struct gfs2_glock_operations gfs2_rgrp_glops = {
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000548 .go_xmote_th = rgrp_go_sync,
549 .go_inval = rgrp_go_inval,
Bob Peterson7c9ca622011-08-31 09:53:19 +0100550 .go_lock = gfs2_rgrp_go_lock,
551 .go_unlock = gfs2_rgrp_go_unlock,
Steven Whitehouse09010972009-05-20 10:48:47 +0100552 .go_dump = gfs2_rgrp_dump,
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400553 .go_type = LM_TYPE_RGRP,
Steven Whitehouse009d8512009-12-08 12:12:13 +0000554 .go_flags = GLOF_ASPACE,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000555};
556
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400557const struct gfs2_glock_operations gfs2_trans_glops = {
Steven Whitehouse3042a2c2007-11-02 08:39:34 +0000558 .go_xmote_th = trans_go_sync,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000559 .go_xmote_bh = trans_go_xmote_bh,
Steven Whitehouse97cc1022008-11-20 13:39:47 +0000560 .go_demote_ok = trans_go_demote_ok,
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400561 .go_type = LM_TYPE_NONDISK,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000562};
563
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400564const struct gfs2_glock_operations gfs2_iopen_glops = {
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400565 .go_type = LM_TYPE_IOPEN,
Benjamin Marzinskib94a1702009-07-23 18:52:34 -0500566 .go_callback = iopen_go_callback,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000567};
568
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400569const struct gfs2_glock_operations gfs2_flock_glops = {
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400570 .go_type = LM_TYPE_FLOCK,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000571};
572
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400573const struct gfs2_glock_operations gfs2_nondisk_glops = {
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400574 .go_type = LM_TYPE_NONDISK,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000575};
576
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400577const struct gfs2_glock_operations gfs2_quota_glops = {
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400578 .go_type = LM_TYPE_QUOTA,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000579};
580
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400581const struct gfs2_glock_operations gfs2_journal_glops = {
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400582 .go_type = LM_TYPE_JOURNAL,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000583};
584
Steven Whitehouse64d576b2009-02-12 13:31:58 +0000585const struct gfs2_glock_operations *gfs2_glops_list[] = {
586 [LM_TYPE_META] = &gfs2_meta_glops,
587 [LM_TYPE_INODE] = &gfs2_inode_glops,
588 [LM_TYPE_RGRP] = &gfs2_rgrp_glops,
Steven Whitehouse64d576b2009-02-12 13:31:58 +0000589 [LM_TYPE_IOPEN] = &gfs2_iopen_glops,
590 [LM_TYPE_FLOCK] = &gfs2_flock_glops,
591 [LM_TYPE_NONDISK] = &gfs2_nondisk_glops,
592 [LM_TYPE_QUOTA] = &gfs2_quota_glops,
593 [LM_TYPE_JOURNAL] = &gfs2_journal_glops,
594};
595