blob: 444b6503ebc404f710aafe371b8b49e100bfba1b [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 Whitehouse8eae1ca2012-10-15 10:57:02 +010077 GLOCK_BUG_ON(gl, !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);
Eric Sandeena0b4df22012-09-17 21:50:31 -050097 sb_start_intwrite(sdp->sd_vfs);
Steven Whitehousedba898b2011-04-14 09:54:02 +010098 gfs2_log_reserve(sdp, tr.tr_reserved);
Steven Whitehouse8eae1ca2012-10-15 10:57:02 +010099 WARN_ON_ONCE(current->journal_info);
Steven Whitehousedba898b2011-04-14 09:54:02 +0100100 current->journal_info = &tr;
101
Steven Whitehouseb5b24d72011-09-07 10:33:25 +0100102 __gfs2_ail_flush(gl, 0);
Steven Whitehousedba898b2011-04-14 09:54:02 +0100103
104 gfs2_trans_end(sdp);
105 gfs2_log_flush(sdp, NULL);
106}
107
Steven Whitehouseb5b24d72011-09-07 10:33:25 +0100108void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync)
Steven Whitehousedba898b2011-04-14 09:54:02 +0100109{
110 struct gfs2_sbd *sdp = gl->gl_sbd;
111 unsigned int revokes = atomic_read(&gl->gl_ail_count);
112 int ret;
113
114 if (!revokes)
115 return;
116
117 ret = gfs2_trans_begin(sdp, 0, revokes);
118 if (ret)
119 return;
Steven Whitehouseb5b24d72011-09-07 10:33:25 +0100120 __gfs2_ail_flush(gl, fsync);
Steven Whitehouseddacfaf2006-10-03 11:10:41 -0400121 gfs2_trans_end(sdp);
122 gfs2_log_flush(sdp, NULL);
123}
Steven Whitehouseba7f7292006-07-26 11:27:10 -0400124
125/**
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000126 * rgrp_go_sync - sync out the metadata for this glock
David Teiglandb3b94fa2006-01-16 16:50:04 +0000127 * @gl: the glock
David Teiglandb3b94fa2006-01-16 16:50:04 +0000128 *
129 * Called when demoting or unlocking an EX glock. We must flush
130 * to disk all dirty buffers/pages relating to this glock, and must not
131 * not return to caller to demote/unlock the glock until I/O is complete.
132 */
133
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000134static void rgrp_go_sync(struct gfs2_glock *gl)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000135{
Steven Whitehouse009d8512009-12-08 12:12:13 +0000136 struct address_space *metamapping = gfs2_glock2aspace(gl);
Steven Whitehouse8339ee52011-08-31 16:38:29 +0100137 struct gfs2_rgrpd *rgd;
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000138 int error;
Steven Whitehouseb5d32be2007-01-22 12:15:34 -0500139
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000140 if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
141 return;
Steven Whitehouse8eae1ca2012-10-15 10:57:02 +0100142 GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE);
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000143
144 gfs2_log_flush(gl->gl_sbd, gl);
145 filemap_fdatawrite(metamapping);
146 error = filemap_fdatawait(metamapping);
147 mapping_set_error(metamapping, error);
148 gfs2_ail_empty_gl(gl);
Bob Peterson7c9ca622011-08-31 09:53:19 +0100149
Steven Whitehouse8339ee52011-08-31 16:38:29 +0100150 spin_lock(&gl->gl_spin);
151 rgd = gl->gl_object;
152 if (rgd)
153 gfs2_free_clones(rgd);
154 spin_unlock(&gl->gl_spin);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000155}
156
157/**
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000158 * rgrp_go_inval - invalidate the metadata for this glock
David Teiglandb3b94fa2006-01-16 16:50:04 +0000159 * @gl: the glock
160 * @flags:
161 *
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000162 * We never used LM_ST_DEFERRED with resource groups, so that we
163 * should always see the metadata flag set here.
164 *
David Teiglandb3b94fa2006-01-16 16:50:04 +0000165 */
166
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000167static void rgrp_go_inval(struct gfs2_glock *gl, int flags)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000168{
Steven Whitehouse009d8512009-12-08 12:12:13 +0000169 struct address_space *mapping = gfs2_glock2aspace(gl);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000170
Steven Whitehouse8eae1ca2012-10-15 10:57:02 +0100171 WARN_ON_ONCE(!(flags & DIO_METADATA));
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000172 gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count));
173 truncate_inode_pages(mapping, 0);
174
175 if (gl->gl_object) {
Bob Petersoncf45b752008-01-31 10:31:39 -0600176 struct gfs2_rgrpd *rgd = (struct gfs2_rgrpd *)gl->gl_object;
Bob Petersoncf45b752008-01-31 10:31:39 -0600177 rgd->rd_flags &= ~GFS2_RDF_UPTODATE;
178 }
David Teiglandb3b94fa2006-01-16 16:50:04 +0000179}
180
181/**
Steven Whitehouseb5d32be2007-01-22 12:15:34 -0500182 * inode_go_sync - Sync the dirty data and/or metadata for an inode glock
183 * @gl: the glock protecting the inode
184 *
185 */
186
187static void inode_go_sync(struct gfs2_glock *gl)
188{
189 struct gfs2_inode *ip = gl->gl_object;
Steven Whitehouse009d8512009-12-08 12:12:13 +0000190 struct address_space *metamapping = gfs2_glock2aspace(gl);
Steven Whitehouse3042a2c2007-11-02 08:39:34 +0000191 int error;
192
Steven Whitehouseb5d32be2007-01-22 12:15:34 -0500193 if (ip && !S_ISREG(ip->i_inode.i_mode))
194 ip = NULL;
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000195 if (ip && test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags))
196 unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0);
197 if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
198 return;
Steven Whitehouseb5d32be2007-01-22 12:15:34 -0500199
Steven Whitehouse8eae1ca2012-10-15 10:57:02 +0100200 GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE);
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000201
202 gfs2_log_flush(gl->gl_sbd, gl);
203 filemap_fdatawrite(metamapping);
204 if (ip) {
205 struct address_space *mapping = ip->i_inode.i_mapping;
206 filemap_fdatawrite(mapping);
207 error = filemap_fdatawait(mapping);
208 mapping_set_error(mapping, error);
Steven Whitehouseb5d32be2007-01-22 12:15:34 -0500209 }
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000210 error = filemap_fdatawait(metamapping);
211 mapping_set_error(metamapping, error);
212 gfs2_ail_empty_gl(gl);
Steven Whitehouse52fcd112009-04-20 08:58:45 +0100213 /*
214 * Writeback of the data mapping may cause the dirty flag to be set
215 * so we have to clear it again here.
216 */
217 smp_mb__before_clear_bit();
218 clear_bit(GLF_DIRTY, &gl->gl_flags);
Steven Whitehouseb5d32be2007-01-22 12:15:34 -0500219}
220
221/**
David Teiglandb3b94fa2006-01-16 16:50:04 +0000222 * inode_go_inval - prepare a inode glock to be released
223 * @gl: the glock
224 * @flags:
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000225 *
226 * Normally we invlidate everything, but if we are moving into
227 * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we
228 * can keep hold of the metadata, since it won't have changed.
David Teiglandb3b94fa2006-01-16 16:50:04 +0000229 *
230 */
231
232static void inode_go_inval(struct gfs2_glock *gl, int flags)
233{
Steven Whitehouseb0041572006-11-23 10:51:34 -0500234 struct gfs2_inode *ip = gl->gl_object;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000235
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000236 gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count));
237
238 if (flags & DIO_METADATA) {
Steven Whitehouse009d8512009-12-08 12:12:13 +0000239 struct address_space *mapping = gfs2_glock2aspace(gl);
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000240 truncate_inode_pages(mapping, 0);
Steven Whitehousec65f7fb2009-10-02 11:54:39 +0100241 if (ip) {
Steven Whitehouseb0041572006-11-23 10:51:34 -0500242 set_bit(GIF_INVALID, &ip->i_flags);
Steven Whitehousec65f7fb2009-10-02 11:54:39 +0100243 forget_all_cached_acls(&ip->i_inode);
Steven Whitehouse17d539f2011-06-15 10:29:37 +0100244 gfs2_dir_hash_inval(ip);
Steven Whitehousec65f7fb2009-10-02 11:54:39 +0100245 }
David Teiglandb3b94fa2006-01-16 16:50:04 +0000246 }
Steven Whitehouseb0041572006-11-23 10:51:34 -0500247
Benjamin Marzinski1ce53362011-06-13 14:27:40 -0500248 if (ip == GFS2_I(gl->gl_sbd->sd_rindex)) {
249 gfs2_log_flush(gl->gl_sbd, NULL);
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000250 gl->gl_sbd->sd_rindex_uptodate = 0;
Benjamin Marzinski1ce53362011-06-13 14:27:40 -0500251 }
Steven Whitehouse3cc3f712007-10-15 15:40:33 +0100252 if (ip && S_ISREG(ip->i_inode.i_mode))
Steven Whitehouseb0041572006-11-23 10:51:34 -0500253 truncate_inode_pages(ip->i_inode.i_mapping, 0);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000254}
255
256/**
257 * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock
258 * @gl: the glock
259 *
260 * Returns: 1 if it's ok
261 */
262
Steven Whitehouse97cc1022008-11-20 13:39:47 +0000263static int inode_go_demote_ok(const struct gfs2_glock *gl)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000264{
265 struct gfs2_sbd *sdp = gl->gl_sbd;
Steven Whitehousebc015cb2011-01-19 09:30:01 +0000266 struct gfs2_holder *gh;
267
Steven Whitehouse97cc1022008-11-20 13:39:47 +0000268 if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object)
269 return 0;
Steven Whitehousebc015cb2011-01-19 09:30:01 +0000270
271 if (!list_empty(&gl->gl_holders)) {
272 gh = list_entry(gl->gl_holders.next, struct gfs2_holder, gh_list);
273 if (gh->gh_list.next != &gl->gl_holders)
274 return 0;
275 }
276
Steven Whitehouse97cc1022008-11-20 13:39:47 +0000277 return 1;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000278}
279
280/**
Steven Whitehoused4b2cf12011-05-09 13:49:59 +0100281 * gfs2_set_nlink - Set the inode's link count based on on-disk info
282 * @inode: The inode in question
283 * @nlink: The link count
284 *
285 * If the link count has hit zero, it must never be raised, whatever the
286 * on-disk inode might say. When new struct inodes are created the link
287 * count is set to 1, so that we can safely use this test even when reading
288 * in on disk information for the first time.
289 */
290
291static void gfs2_set_nlink(struct inode *inode, u32 nlink)
292{
293 /*
294 * We will need to review setting the nlink count here in the
295 * light of the forthcoming ro bind mount work. This is a reminder
296 * to do that.
297 */
298 if ((inode->i_nlink != nlink) && (inode->i_nlink != 0)) {
299 if (nlink == 0)
300 clear_nlink(inode);
301 else
Miklos Szeredibfe86842011-10-28 14:13:29 +0200302 set_nlink(inode, nlink);
Steven Whitehoused4b2cf12011-05-09 13:49:59 +0100303 }
304}
305
306static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
307{
308 const struct gfs2_dinode *str = buf;
309 struct timespec atime;
310 u16 height, depth;
311
312 if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)))
313 goto corrupt;
314 ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino);
315 ip->i_inode.i_mode = be32_to_cpu(str->di_mode);
316 ip->i_inode.i_rdev = 0;
317 switch (ip->i_inode.i_mode & S_IFMT) {
318 case S_IFBLK:
319 case S_IFCHR:
320 ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major),
321 be32_to_cpu(str->di_minor));
322 break;
323 };
324
Eric W. Biedermand0546422013-01-31 22:08:10 -0800325 i_uid_write(&ip->i_inode, be32_to_cpu(str->di_uid));
326 i_gid_write(&ip->i_inode, be32_to_cpu(str->di_gid));
Steven Whitehoused4b2cf12011-05-09 13:49:59 +0100327 gfs2_set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink));
328 i_size_write(&ip->i_inode, be64_to_cpu(str->di_size));
329 gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks));
330 atime.tv_sec = be64_to_cpu(str->di_atime);
331 atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
332 if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0)
333 ip->i_inode.i_atime = atime;
334 ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime);
335 ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec);
336 ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime);
337 ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec);
338
339 ip->i_goal = be64_to_cpu(str->di_goal_meta);
340 ip->i_generation = be64_to_cpu(str->di_generation);
341
342 ip->i_diskflags = be32_to_cpu(str->di_flags);
Steven Whitehouse9964afb2011-06-16 14:06:55 +0100343 ip->i_eattr = be64_to_cpu(str->di_eattr);
344 /* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */
Steven Whitehoused4b2cf12011-05-09 13:49:59 +0100345 gfs2_set_inode_flags(&ip->i_inode);
346 height = be16_to_cpu(str->di_height);
347 if (unlikely(height > GFS2_MAX_META_HEIGHT))
348 goto corrupt;
349 ip->i_height = (u8)height;
350
351 depth = be16_to_cpu(str->di_depth);
352 if (unlikely(depth > GFS2_DIR_MAX_DEPTH))
353 goto corrupt;
354 ip->i_depth = (u8)depth;
355 ip->i_entries = be32_to_cpu(str->di_entries);
356
Steven Whitehoused4b2cf12011-05-09 13:49:59 +0100357 if (S_ISREG(ip->i_inode.i_mode))
358 gfs2_set_aops(&ip->i_inode);
359
360 return 0;
361corrupt:
362 gfs2_consist_inode(ip);
363 return -EIO;
364}
365
366/**
367 * gfs2_inode_refresh - Refresh the incore copy of the dinode
368 * @ip: The GFS2 inode
369 *
370 * Returns: errno
371 */
372
373int gfs2_inode_refresh(struct gfs2_inode *ip)
374{
375 struct buffer_head *dibh;
376 int error;
377
378 error = gfs2_meta_inode_buffer(ip, &dibh);
379 if (error)
380 return error;
381
Steven Whitehoused4b2cf12011-05-09 13:49:59 +0100382 error = gfs2_dinode_in(ip, dibh->b_data);
383 brelse(dibh);
384 clear_bit(GIF_INVALID, &ip->i_flags);
385
386 return error;
387}
388
389/**
David Teiglandb3b94fa2006-01-16 16:50:04 +0000390 * inode_go_lock - operation done after an inode lock is locked by a process
391 * @gl: the glock
392 * @flags:
393 *
394 * Returns: errno
395 */
396
397static int inode_go_lock(struct gfs2_holder *gh)
398{
399 struct gfs2_glock *gl = gh->gh_gl;
Steven Whitehouse813e0c42008-11-18 13:38:48 +0000400 struct gfs2_sbd *sdp = gl->gl_sbd;
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500401 struct gfs2_inode *ip = gl->gl_object;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000402 int error = 0;
403
Bob Peterson091806ed2008-04-29 12:35:48 -0500404 if (!ip || (gh->gh_flags & GL_SKIP))
David Teiglandb3b94fa2006-01-16 16:50:04 +0000405 return 0;
406
Steven Whitehousebfded272006-11-01 16:05:38 -0500407 if (test_bit(GIF_INVALID, &ip->i_flags)) {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000408 error = gfs2_inode_refresh(ip);
409 if (error)
410 return error;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000411 }
412
Steven Whitehouse383f01f2008-11-04 10:05:22 +0000413 if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) &&
David Teiglandb3b94fa2006-01-16 16:50:04 +0000414 (gl->gl_state == LM_ST_EXCLUSIVE) &&
Steven Whitehouse813e0c42008-11-18 13:38:48 +0000415 (gh->gh_state == LM_ST_EXCLUSIVE)) {
416 spin_lock(&sdp->sd_trunc_lock);
417 if (list_empty(&ip->i_trunc_list))
418 list_add(&sdp->sd_trunc_list, &ip->i_trunc_list);
419 spin_unlock(&sdp->sd_trunc_lock);
420 wake_up(&sdp->sd_quota_wait);
421 return 1;
422 }
David Teiglandb3b94fa2006-01-16 16:50:04 +0000423
424 return error;
425}
426
427/**
Steven Whitehouse6802e342008-05-21 17:03:22 +0100428 * inode_go_dump - print information about an inode
429 * @seq: The iterator
430 * @ip: the inode
431 *
432 * Returns: 0 on success, -ENOBUFS when we run out of space
433 */
434
435static int inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl)
436{
437 const struct gfs2_inode *ip = gl->gl_object;
438 if (ip == NULL)
439 return 0;
Steven Whitehousea2e0f792010-08-11 09:53:11 +0100440 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 +0100441 (unsigned long long)ip->i_no_formal_ino,
442 (unsigned long long)ip->i_no_addr,
Steven Whitehousefa75ced2008-11-10 10:10:12 +0000443 IF2DT(ip->i_inode.i_mode), ip->i_flags,
444 (unsigned int)ip->i_diskflags,
Steven Whitehousea2e0f792010-08-11 09:53:11 +0100445 (unsigned long long)i_size_read(&ip->i_inode));
Steven Whitehouse6802e342008-05-21 17:03:22 +0100446 return 0;
447}
448
449/**
Steven Whitehouse3042a2c2007-11-02 08:39:34 +0000450 * trans_go_sync - promote/demote the transaction glock
David Teiglandb3b94fa2006-01-16 16:50:04 +0000451 * @gl: the glock
452 * @state: the requested state
453 * @flags:
454 *
455 */
456
Steven Whitehouse3042a2c2007-11-02 08:39:34 +0000457static void trans_go_sync(struct gfs2_glock *gl)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000458{
459 struct gfs2_sbd *sdp = gl->gl_sbd;
460
461 if (gl->gl_state != LM_ST_UNLOCKED &&
462 test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
463 gfs2_meta_syncfs(sdp);
464 gfs2_log_shutdown(sdp);
465 }
David Teiglandb3b94fa2006-01-16 16:50:04 +0000466}
467
468/**
469 * trans_go_xmote_bh - After promoting/demoting the transaction glock
470 * @gl: the glock
471 *
472 */
473
Steven Whitehouse6802e342008-05-21 17:03:22 +0100474static int trans_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000475{
476 struct gfs2_sbd *sdp = gl->gl_sbd;
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400477 struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode);
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500478 struct gfs2_glock *j_gl = ip->i_gl;
Al Viro55167622006-10-13 21:47:13 -0400479 struct gfs2_log_header_host head;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000480 int error;
481
Steven Whitehouse6802e342008-05-21 17:03:22 +0100482 if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
Steven Whitehouse1a14d3a2006-11-20 10:37:45 -0500483 j_gl->gl_ops->go_inval(j_gl, DIO_METADATA);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000484
485 error = gfs2_find_jhead(sdp->sd_jdesc, &head);
486 if (error)
487 gfs2_consist(sdp);
488 if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT))
489 gfs2_consist(sdp);
490
491 /* Initialize some head of the log stuff */
492 if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) {
493 sdp->sd_log_sequence = head.lh_sequence + 1;
494 gfs2_log_pointers_init(sdp, head.lh_blkno);
495 }
496 }
Steven Whitehouse6802e342008-05-21 17:03:22 +0100497 return 0;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000498}
499
500/**
Steven Whitehouse97cc1022008-11-20 13:39:47 +0000501 * trans_go_demote_ok
502 * @gl: the glock
503 *
504 * Always returns 0
505 */
506
507static int trans_go_demote_ok(const struct gfs2_glock *gl)
508{
509 return 0;
510}
511
Benjamin Marzinskib94a1702009-07-23 18:52:34 -0500512/**
513 * iopen_go_callback - schedule the dcache entry for the inode to be deleted
514 * @gl: the glock
515 *
516 * gl_spin lock is held while calling this
517 */
518static void iopen_go_callback(struct gfs2_glock *gl)
519{
520 struct gfs2_inode *ip = (struct gfs2_inode *)gl->gl_object;
Steven Whitehouse001e8e82011-03-30 14:17:51 +0100521 struct gfs2_sbd *sdp = gl->gl_sbd;
522
523 if (sdp->sd_vfs->s_flags & MS_RDONLY)
524 return;
Benjamin Marzinskib94a1702009-07-23 18:52:34 -0500525
526 if (gl->gl_demote_state == LM_ST_UNLOCKED &&
Steven Whitehouse009d8512009-12-08 12:12:13 +0000527 gl->gl_state == LM_ST_SHARED && ip) {
Benjamin Marzinskib94a1702009-07-23 18:52:34 -0500528 gfs2_glock_hold(gl);
529 if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0)
530 gfs2_glock_put_nolock(gl);
531 }
532}
533
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400534const struct gfs2_glock_operations gfs2_meta_glops = {
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400535 .go_type = LM_TYPE_META,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000536};
537
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400538const struct gfs2_glock_operations gfs2_inode_glops = {
Bob Peterson06dfc302012-10-24 14:41:05 -0400539 .go_sync = inode_go_sync,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000540 .go_inval = inode_go_inval,
541 .go_demote_ok = inode_go_demote_ok,
542 .go_lock = inode_go_lock,
Steven Whitehouse6802e342008-05-21 17:03:22 +0100543 .go_dump = inode_go_dump,
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400544 .go_type = LM_TYPE_INODE,
Steven Whitehouse009d8512009-12-08 12:12:13 +0000545 .go_flags = GLOF_ASPACE,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000546};
547
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400548const struct gfs2_glock_operations gfs2_rgrp_glops = {
Bob Peterson06dfc302012-10-24 14:41:05 -0400549 .go_sync = rgrp_go_sync,
Steven Whitehouse6bac2432009-03-09 09:03:51 +0000550 .go_inval = rgrp_go_inval,
Bob Peterson7c9ca622011-08-31 09:53:19 +0100551 .go_lock = gfs2_rgrp_go_lock,
552 .go_unlock = gfs2_rgrp_go_unlock,
Steven Whitehouse09010972009-05-20 10:48:47 +0100553 .go_dump = gfs2_rgrp_dump,
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400554 .go_type = LM_TYPE_RGRP,
David Teiglanddba2d702012-11-14 13:46:53 -0500555 .go_flags = GLOF_ASPACE | GLOF_LVB,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000556};
557
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400558const struct gfs2_glock_operations gfs2_trans_glops = {
Bob Peterson06dfc302012-10-24 14:41:05 -0400559 .go_sync = trans_go_sync,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000560 .go_xmote_bh = trans_go_xmote_bh,
Steven Whitehouse97cc1022008-11-20 13:39:47 +0000561 .go_demote_ok = trans_go_demote_ok,
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400562 .go_type = LM_TYPE_NONDISK,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000563};
564
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400565const struct gfs2_glock_operations gfs2_iopen_glops = {
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400566 .go_type = LM_TYPE_IOPEN,
Benjamin Marzinskib94a1702009-07-23 18:52:34 -0500567 .go_callback = iopen_go_callback,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000568};
569
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400570const struct gfs2_glock_operations gfs2_flock_glops = {
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400571 .go_type = LM_TYPE_FLOCK,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000572};
573
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400574const struct gfs2_glock_operations gfs2_nondisk_glops = {
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400575 .go_type = LM_TYPE_NONDISK,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000576};
577
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400578const struct gfs2_glock_operations gfs2_quota_glops = {
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400579 .go_type = LM_TYPE_QUOTA,
David Teiglanddba2d702012-11-14 13:46:53 -0500580 .go_flags = GLOF_LVB,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000581};
582
Steven Whitehouse8fb4b532006-08-30 09:30:00 -0400583const struct gfs2_glock_operations gfs2_journal_glops = {
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400584 .go_type = LM_TYPE_JOURNAL,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000585};
586
Steven Whitehouse64d576b2009-02-12 13:31:58 +0000587const struct gfs2_glock_operations *gfs2_glops_list[] = {
588 [LM_TYPE_META] = &gfs2_meta_glops,
589 [LM_TYPE_INODE] = &gfs2_inode_glops,
590 [LM_TYPE_RGRP] = &gfs2_rgrp_glops,
Steven Whitehouse64d576b2009-02-12 13:31:58 +0000591 [LM_TYPE_IOPEN] = &gfs2_iopen_glops,
592 [LM_TYPE_FLOCK] = &gfs2_flock_glops,
593 [LM_TYPE_NONDISK] = &gfs2_nondisk_glops,
594 [LM_TYPE_QUOTA] = &gfs2_quota_glops,
595 [LM_TYPE_JOURNAL] = &gfs2_journal_glops,
596};
597