Commit | Line | Data |
---|---|---|
b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
cf45b752 | 3 | * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
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 | |
e9fc2aa0 | 7 | * of the GNU General Public License version 2. |
b3b94faa DT |
8 | */ |
9 | ||
b3b94faa DT |
10 | #include <linux/spinlock.h> |
11 | #include <linux/completion.h> | |
12 | #include <linux/buffer_head.h> | |
5c676f6d | 13 | #include <linux/gfs2_ondisk.h> |
6802e340 | 14 | #include <linux/bio.h> |
c65f7fb5 | 15 | #include <linux/posix_acl.h> |
b3b94faa DT |
16 | |
17 | #include "gfs2.h" | |
5c676f6d | 18 | #include "incore.h" |
b3b94faa DT |
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" | |
b3b94faa DT |
25 | #include "recovery.h" |
26 | #include "rgrp.h" | |
5c676f6d | 27 | #include "util.h" |
ddacfaf7 | 28 | #include "trans.h" |
17d539f0 | 29 | #include "dir.h" |
b3b94faa | 30 | |
2e60d768 BM |
31 | struct workqueue_struct *gfs2_freeze_wq; |
32 | ||
75549186 SW |
33 | static void gfs2_ail_error(struct gfs2_glock *gl, const struct buffer_head *bh) |
34 | { | |
35 | fs_err(gl->gl_sbd, "AIL buffer %p: blocknr %llu state 0x%08lx mapping %p page state 0x%lx\n", | |
36 | bh, (unsigned long long)bh->b_blocknr, bh->b_state, | |
37 | bh->b_page->mapping, bh->b_page->flags); | |
38 | fs_err(gl->gl_sbd, "AIL glock %u:%llu mapping %p\n", | |
39 | gl->gl_name.ln_type, gl->gl_name.ln_number, | |
40 | gfs2_glock2aspace(gl)); | |
41 | gfs2_lm_withdraw(gl->gl_sbd, "AIL error\n"); | |
42 | } | |
43 | ||
ddacfaf7 | 44 | /** |
dba898b0 | 45 | * __gfs2_ail_flush - remove all buffers for a given lock from the AIL |
ddacfaf7 | 46 | * @gl: the glock |
b5b24d7a | 47 | * @fsync: set when called from fsync (not all buffers will be clean) |
ddacfaf7 SW |
48 | * |
49 | * None of the buffers should be dirty, locked, or pinned. | |
50 | */ | |
51 | ||
1bc333f4 BM |
52 | static void __gfs2_ail_flush(struct gfs2_glock *gl, bool fsync, |
53 | unsigned int nr_revokes) | |
ddacfaf7 SW |
54 | { |
55 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
ddacfaf7 | 56 | struct list_head *head = &gl->gl_ail_list; |
b5b24d7a | 57 | struct gfs2_bufdata *bd, *tmp; |
ddacfaf7 | 58 | struct buffer_head *bh; |
b5b24d7a | 59 | const unsigned long b_state = (1UL << BH_Dirty)|(1UL << BH_Pinned)|(1UL << BH_Lock); |
d8348de0 | 60 | |
b5b24d7a | 61 | gfs2_log_lock(sdp); |
d6a079e8 | 62 | spin_lock(&sdp->sd_ail_lock); |
1bc333f4 BM |
63 | list_for_each_entry_safe_reverse(bd, tmp, head, bd_ail_gl_list) { |
64 | if (nr_revokes == 0) | |
65 | break; | |
ddacfaf7 | 66 | bh = bd->bd_bh; |
b5b24d7a SW |
67 | if (bh->b_state & b_state) { |
68 | if (fsync) | |
69 | continue; | |
75549186 | 70 | gfs2_ail_error(gl, bh); |
b5b24d7a | 71 | } |
1ad38c43 | 72 | gfs2_trans_add_revoke(sdp, bd); |
1bc333f4 | 73 | nr_revokes--; |
ddacfaf7 | 74 | } |
8eae1ca0 | 75 | GLOCK_BUG_ON(gl, !fsync && atomic_read(&gl->gl_ail_count)); |
d6a079e8 | 76 | spin_unlock(&sdp->sd_ail_lock); |
b5b24d7a | 77 | gfs2_log_unlock(sdp); |
dba898b0 SW |
78 | } |
79 | ||
80 | ||
81 | static void gfs2_ail_empty_gl(struct gfs2_glock *gl) | |
82 | { | |
83 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
84 | struct gfs2_trans tr; | |
85 | ||
86 | memset(&tr, 0, sizeof(tr)); | |
d69a3c65 SW |
87 | INIT_LIST_HEAD(&tr.tr_buf); |
88 | INIT_LIST_HEAD(&tr.tr_databuf); | |
dba898b0 SW |
89 | tr.tr_revokes = atomic_read(&gl->gl_ail_count); |
90 | ||
91 | if (!tr.tr_revokes) | |
92 | return; | |
93 | ||
24972557 BM |
94 | /* A shortened, inline version of gfs2_trans_begin() |
95 | * tr->alloced is not set since the transaction structure is | |
96 | * on the stack */ | |
dba898b0 | 97 | tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64)); |
d29c0afe | 98 | tr.tr_ip = _RET_IP_; |
2e60d768 | 99 | if (gfs2_log_reserve(sdp, tr.tr_reserved) < 0) |
24972557 | 100 | return; |
8eae1ca0 | 101 | WARN_ON_ONCE(current->journal_info); |
dba898b0 SW |
102 | current->journal_info = &tr; |
103 | ||
1bc333f4 | 104 | __gfs2_ail_flush(gl, 0, tr.tr_revokes); |
dba898b0 SW |
105 | |
106 | gfs2_trans_end(sdp); | |
24972557 | 107 | gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); |
dba898b0 | 108 | } |
ddacfaf7 | 109 | |
b5b24d7a | 110 | void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync) |
dba898b0 SW |
111 | { |
112 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
113 | unsigned int revokes = atomic_read(&gl->gl_ail_count); | |
1bc333f4 | 114 | unsigned int max_revokes = (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_log_descriptor)) / sizeof(u64); |
dba898b0 SW |
115 | int ret; |
116 | ||
117 | if (!revokes) | |
118 | return; | |
119 | ||
1bc333f4 BM |
120 | while (revokes > max_revokes) |
121 | max_revokes += (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header)) / sizeof(u64); | |
122 | ||
123 | ret = gfs2_trans_begin(sdp, 0, max_revokes); | |
dba898b0 SW |
124 | if (ret) |
125 | return; | |
1bc333f4 | 126 | __gfs2_ail_flush(gl, fsync, max_revokes); |
ddacfaf7 | 127 | gfs2_trans_end(sdp); |
24972557 | 128 | gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); |
ddacfaf7 | 129 | } |
ba7f7290 SW |
130 | |
131 | /** | |
6bac243f | 132 | * rgrp_go_sync - sync out the metadata for this glock |
b3b94faa | 133 | * @gl: the glock |
b3b94faa DT |
134 | * |
135 | * Called when demoting or unlocking an EX glock. We must flush | |
136 | * to disk all dirty buffers/pages relating to this glock, and must not | |
137 | * not return to caller to demote/unlock the glock until I/O is complete. | |
138 | */ | |
139 | ||
6bac243f | 140 | static void rgrp_go_sync(struct gfs2_glock *gl) |
b3b94faa | 141 | { |
70d4ee94 SW |
142 | struct gfs2_sbd *sdp = gl->gl_sbd; |
143 | struct address_space *mapping = &sdp->sd_aspace; | |
8339ee54 | 144 | struct gfs2_rgrpd *rgd; |
6bac243f SW |
145 | int error; |
146 | ||
147 | if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) | |
b5d32bea | 148 | return; |
8eae1ca0 | 149 | GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE); |
b5d32bea | 150 | |
24972557 | 151 | gfs2_log_flush(sdp, gl, NORMAL_FLUSH); |
70d4ee94 SW |
152 | filemap_fdatawrite_range(mapping, gl->gl_vm.start, gl->gl_vm.end); |
153 | error = filemap_fdatawait_range(mapping, gl->gl_vm.start, gl->gl_vm.end); | |
154 | mapping_set_error(mapping, error); | |
6bac243f | 155 | gfs2_ail_empty_gl(gl); |
7c9ca621 | 156 | |
8339ee54 SW |
157 | spin_lock(&gl->gl_spin); |
158 | rgd = gl->gl_object; | |
159 | if (rgd) | |
160 | gfs2_free_clones(rgd); | |
161 | spin_unlock(&gl->gl_spin); | |
b3b94faa DT |
162 | } |
163 | ||
164 | /** | |
6bac243f | 165 | * rgrp_go_inval - invalidate the metadata for this glock |
b3b94faa DT |
166 | * @gl: the glock |
167 | * @flags: | |
168 | * | |
6bac243f SW |
169 | * We never used LM_ST_DEFERRED with resource groups, so that we |
170 | * should always see the metadata flag set here. | |
171 | * | |
b3b94faa DT |
172 | */ |
173 | ||
6bac243f | 174 | static void rgrp_go_inval(struct gfs2_glock *gl, int flags) |
b3b94faa | 175 | { |
70d4ee94 SW |
176 | struct gfs2_sbd *sdp = gl->gl_sbd; |
177 | struct address_space *mapping = &sdp->sd_aspace; | |
b3b94faa | 178 | |
8eae1ca0 | 179 | WARN_ON_ONCE(!(flags & DIO_METADATA)); |
70d4ee94 | 180 | gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count)); |
7005c3e4 | 181 | truncate_inode_pages_range(mapping, gl->gl_vm.start, gl->gl_vm.end); |
cf45b752 | 182 | |
6bac243f SW |
183 | if (gl->gl_object) { |
184 | struct gfs2_rgrpd *rgd = (struct gfs2_rgrpd *)gl->gl_object; | |
cf45b752 BP |
185 | rgd->rd_flags &= ~GFS2_RDF_UPTODATE; |
186 | } | |
b3b94faa DT |
187 | } |
188 | ||
b5d32bea SW |
189 | /** |
190 | * inode_go_sync - Sync the dirty data and/or metadata for an inode glock | |
191 | * @gl: the glock protecting the inode | |
192 | * | |
193 | */ | |
194 | ||
195 | static void inode_go_sync(struct gfs2_glock *gl) | |
196 | { | |
197 | struct gfs2_inode *ip = gl->gl_object; | |
009d8518 | 198 | struct address_space *metamapping = gfs2_glock2aspace(gl); |
3042a2cc SW |
199 | int error; |
200 | ||
b5d32bea SW |
201 | if (ip && !S_ISREG(ip->i_inode.i_mode)) |
202 | ip = NULL; | |
582d2f7a SW |
203 | if (ip) { |
204 | if (test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags)) | |
205 | unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0); | |
206 | inode_dio_wait(&ip->i_inode); | |
207 | } | |
6bac243f SW |
208 | if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) |
209 | return; | |
b5d32bea | 210 | |
8eae1ca0 | 211 | GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE); |
6bac243f | 212 | |
24972557 | 213 | gfs2_log_flush(gl->gl_sbd, gl, NORMAL_FLUSH); |
6bac243f SW |
214 | filemap_fdatawrite(metamapping); |
215 | if (ip) { | |
216 | struct address_space *mapping = ip->i_inode.i_mapping; | |
217 | filemap_fdatawrite(mapping); | |
218 | error = filemap_fdatawait(mapping); | |
219 | mapping_set_error(mapping, error); | |
b5d32bea | 220 | } |
6bac243f SW |
221 | error = filemap_fdatawait(metamapping); |
222 | mapping_set_error(metamapping, error); | |
223 | gfs2_ail_empty_gl(gl); | |
52fcd11c SW |
224 | /* |
225 | * Writeback of the data mapping may cause the dirty flag to be set | |
226 | * so we have to clear it again here. | |
227 | */ | |
4e857c58 | 228 | smp_mb__before_atomic(); |
52fcd11c | 229 | clear_bit(GLF_DIRTY, &gl->gl_flags); |
b5d32bea SW |
230 | } |
231 | ||
b3b94faa DT |
232 | /** |
233 | * inode_go_inval - prepare a inode glock to be released | |
234 | * @gl: the glock | |
235 | * @flags: | |
6b49d1d9 GU |
236 | * |
237 | * Normally we invalidate everything, but if we are moving into | |
6bac243f SW |
238 | * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we |
239 | * can keep hold of the metadata, since it won't have changed. | |
b3b94faa DT |
240 | * |
241 | */ | |
242 | ||
243 | static void inode_go_inval(struct gfs2_glock *gl, int flags) | |
244 | { | |
b004157a | 245 | struct gfs2_inode *ip = gl->gl_object; |
b3b94faa | 246 | |
6bac243f SW |
247 | gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count)); |
248 | ||
249 | if (flags & DIO_METADATA) { | |
009d8518 | 250 | struct address_space *mapping = gfs2_glock2aspace(gl); |
6bac243f | 251 | truncate_inode_pages(mapping, 0); |
c65f7fb5 | 252 | if (ip) { |
b004157a | 253 | set_bit(GIF_INVALID, &ip->i_flags); |
c65f7fb5 | 254 | forget_all_cached_acls(&ip->i_inode); |
17d539f0 | 255 | gfs2_dir_hash_inval(ip); |
c65f7fb5 | 256 | } |
b004157a SW |
257 | } |
258 | ||
1ce53368 | 259 | if (ip == GFS2_I(gl->gl_sbd->sd_rindex)) { |
24972557 | 260 | gfs2_log_flush(gl->gl_sbd, NULL, NORMAL_FLUSH); |
6bac243f | 261 | gl->gl_sbd->sd_rindex_uptodate = 0; |
1ce53368 | 262 | } |
3cc3f710 | 263 | if (ip && S_ISREG(ip->i_inode.i_mode)) |
b004157a | 264 | truncate_inode_pages(ip->i_inode.i_mapping, 0); |
b3b94faa DT |
265 | } |
266 | ||
267 | /** | |
268 | * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock | |
269 | * @gl: the glock | |
270 | * | |
271 | * Returns: 1 if it's ok | |
272 | */ | |
273 | ||
97cc1025 | 274 | static int inode_go_demote_ok(const struct gfs2_glock *gl) |
b3b94faa DT |
275 | { |
276 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
bc015cb8 SW |
277 | struct gfs2_holder *gh; |
278 | ||
97cc1025 SW |
279 | if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object) |
280 | return 0; | |
bc015cb8 SW |
281 | |
282 | if (!list_empty(&gl->gl_holders)) { | |
283 | gh = list_entry(gl->gl_holders.next, struct gfs2_holder, gh_list); | |
284 | if (gh->gh_list.next != &gl->gl_holders) | |
285 | return 0; | |
286 | } | |
287 | ||
97cc1025 | 288 | return 1; |
b3b94faa DT |
289 | } |
290 | ||
d4b2cf1b SW |
291 | /** |
292 | * gfs2_set_nlink - Set the inode's link count based on on-disk info | |
293 | * @inode: The inode in question | |
294 | * @nlink: The link count | |
295 | * | |
296 | * If the link count has hit zero, it must never be raised, whatever the | |
297 | * on-disk inode might say. When new struct inodes are created the link | |
298 | * count is set to 1, so that we can safely use this test even when reading | |
299 | * in on disk information for the first time. | |
300 | */ | |
301 | ||
302 | static void gfs2_set_nlink(struct inode *inode, u32 nlink) | |
303 | { | |
304 | /* | |
305 | * We will need to review setting the nlink count here in the | |
306 | * light of the forthcoming ro bind mount work. This is a reminder | |
307 | * to do that. | |
308 | */ | |
309 | if ((inode->i_nlink != nlink) && (inode->i_nlink != 0)) { | |
310 | if (nlink == 0) | |
311 | clear_nlink(inode); | |
312 | else | |
bfe86848 | 313 | set_nlink(inode, nlink); |
d4b2cf1b SW |
314 | } |
315 | } | |
316 | ||
317 | static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) | |
318 | { | |
319 | const struct gfs2_dinode *str = buf; | |
320 | struct timespec atime; | |
321 | u16 height, depth; | |
322 | ||
323 | if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr))) | |
324 | goto corrupt; | |
325 | ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino); | |
326 | ip->i_inode.i_mode = be32_to_cpu(str->di_mode); | |
327 | ip->i_inode.i_rdev = 0; | |
328 | switch (ip->i_inode.i_mode & S_IFMT) { | |
329 | case S_IFBLK: | |
330 | case S_IFCHR: | |
331 | ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major), | |
332 | be32_to_cpu(str->di_minor)); | |
333 | break; | |
334 | }; | |
335 | ||
d0546426 EB |
336 | i_uid_write(&ip->i_inode, be32_to_cpu(str->di_uid)); |
337 | i_gid_write(&ip->i_inode, be32_to_cpu(str->di_gid)); | |
d4b2cf1b SW |
338 | gfs2_set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink)); |
339 | i_size_write(&ip->i_inode, be64_to_cpu(str->di_size)); | |
340 | gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks)); | |
341 | atime.tv_sec = be64_to_cpu(str->di_atime); | |
342 | atime.tv_nsec = be32_to_cpu(str->di_atime_nsec); | |
343 | if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0) | |
344 | ip->i_inode.i_atime = atime; | |
345 | ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime); | |
346 | ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec); | |
347 | ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime); | |
348 | ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec); | |
349 | ||
350 | ip->i_goal = be64_to_cpu(str->di_goal_meta); | |
351 | ip->i_generation = be64_to_cpu(str->di_generation); | |
352 | ||
353 | ip->i_diskflags = be32_to_cpu(str->di_flags); | |
9964afbb SW |
354 | ip->i_eattr = be64_to_cpu(str->di_eattr); |
355 | /* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */ | |
d4b2cf1b SW |
356 | gfs2_set_inode_flags(&ip->i_inode); |
357 | height = be16_to_cpu(str->di_height); | |
358 | if (unlikely(height > GFS2_MAX_META_HEIGHT)) | |
359 | goto corrupt; | |
360 | ip->i_height = (u8)height; | |
361 | ||
362 | depth = be16_to_cpu(str->di_depth); | |
363 | if (unlikely(depth > GFS2_DIR_MAX_DEPTH)) | |
364 | goto corrupt; | |
365 | ip->i_depth = (u8)depth; | |
366 | ip->i_entries = be32_to_cpu(str->di_entries); | |
367 | ||
d4b2cf1b SW |
368 | if (S_ISREG(ip->i_inode.i_mode)) |
369 | gfs2_set_aops(&ip->i_inode); | |
370 | ||
371 | return 0; | |
372 | corrupt: | |
373 | gfs2_consist_inode(ip); | |
374 | return -EIO; | |
375 | } | |
376 | ||
377 | /** | |
378 | * gfs2_inode_refresh - Refresh the incore copy of the dinode | |
379 | * @ip: The GFS2 inode | |
380 | * | |
381 | * Returns: errno | |
382 | */ | |
383 | ||
384 | int gfs2_inode_refresh(struct gfs2_inode *ip) | |
385 | { | |
386 | struct buffer_head *dibh; | |
387 | int error; | |
388 | ||
389 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
390 | if (error) | |
391 | return error; | |
392 | ||
d4b2cf1b SW |
393 | error = gfs2_dinode_in(ip, dibh->b_data); |
394 | brelse(dibh); | |
395 | clear_bit(GIF_INVALID, &ip->i_flags); | |
396 | ||
397 | return error; | |
398 | } | |
399 | ||
b3b94faa DT |
400 | /** |
401 | * inode_go_lock - operation done after an inode lock is locked by a process | |
402 | * @gl: the glock | |
403 | * @flags: | |
404 | * | |
405 | * Returns: errno | |
406 | */ | |
407 | ||
408 | static int inode_go_lock(struct gfs2_holder *gh) | |
409 | { | |
410 | struct gfs2_glock *gl = gh->gh_gl; | |
813e0c46 | 411 | struct gfs2_sbd *sdp = gl->gl_sbd; |
5c676f6d | 412 | struct gfs2_inode *ip = gl->gl_object; |
b3b94faa DT |
413 | int error = 0; |
414 | ||
091806ed | 415 | if (!ip || (gh->gh_flags & GL_SKIP)) |
b3b94faa DT |
416 | return 0; |
417 | ||
bfded27b | 418 | if (test_bit(GIF_INVALID, &ip->i_flags)) { |
b3b94faa DT |
419 | error = gfs2_inode_refresh(ip); |
420 | if (error) | |
421 | return error; | |
b3b94faa DT |
422 | } |
423 | ||
582d2f7a SW |
424 | if (gh->gh_state != LM_ST_DEFERRED) |
425 | inode_dio_wait(&ip->i_inode); | |
426 | ||
383f01fb | 427 | if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) && |
b3b94faa | 428 | (gl->gl_state == LM_ST_EXCLUSIVE) && |
813e0c46 SW |
429 | (gh->gh_state == LM_ST_EXCLUSIVE)) { |
430 | spin_lock(&sdp->sd_trunc_lock); | |
431 | if (list_empty(&ip->i_trunc_list)) | |
432 | list_add(&sdp->sd_trunc_list, &ip->i_trunc_list); | |
433 | spin_unlock(&sdp->sd_trunc_lock); | |
434 | wake_up(&sdp->sd_quota_wait); | |
435 | return 1; | |
436 | } | |
b3b94faa DT |
437 | |
438 | return error; | |
439 | } | |
440 | ||
6802e340 SW |
441 | /** |
442 | * inode_go_dump - print information about an inode | |
443 | * @seq: The iterator | |
444 | * @ip: the inode | |
445 | * | |
6802e340 SW |
446 | */ |
447 | ||
ac3beb6a | 448 | static void inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl) |
6802e340 SW |
449 | { |
450 | const struct gfs2_inode *ip = gl->gl_object; | |
451 | if (ip == NULL) | |
ac3beb6a | 452 | return; |
a2e0f799 | 453 | gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu\n", |
6802e340 SW |
454 | (unsigned long long)ip->i_no_formal_ino, |
455 | (unsigned long long)ip->i_no_addr, | |
fa75cedc SW |
456 | IF2DT(ip->i_inode.i_mode), ip->i_flags, |
457 | (unsigned int)ip->i_diskflags, | |
a2e0f799 | 458 | (unsigned long long)i_size_read(&ip->i_inode)); |
6802e340 SW |
459 | } |
460 | ||
b3b94faa | 461 | /** |
24972557 | 462 | * freeze_go_sync - promote/demote the freeze glock |
b3b94faa DT |
463 | * @gl: the glock |
464 | * @state: the requested state | |
465 | * @flags: | |
466 | * | |
467 | */ | |
468 | ||
24972557 | 469 | static void freeze_go_sync(struct gfs2_glock *gl) |
b3b94faa | 470 | { |
2e60d768 | 471 | int error = 0; |
b3b94faa DT |
472 | struct gfs2_sbd *sdp = gl->gl_sbd; |
473 | ||
24972557 | 474 | if (gl->gl_state == LM_ST_SHARED && |
b3b94faa | 475 | test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { |
2e60d768 BM |
476 | atomic_set(&sdp->sd_freeze_state, SFS_STARTING_FREEZE); |
477 | error = freeze_super(sdp->sd_vfs); | |
478 | if (error) { | |
479 | printk(KERN_INFO "GFS2: couldn't freeze filesystem: %d\n", error); | |
480 | gfs2_assert_withdraw(sdp, 0); | |
481 | } | |
482 | queue_work(gfs2_freeze_wq, &sdp->sd_freeze_work); | |
483 | gfs2_log_flush(sdp, NULL, FREEZE_FLUSH); | |
b3b94faa | 484 | } |
b3b94faa DT |
485 | } |
486 | ||
487 | /** | |
24972557 | 488 | * freeze_go_xmote_bh - After promoting/demoting the freeze glock |
b3b94faa DT |
489 | * @gl: the glock |
490 | * | |
491 | */ | |
492 | ||
24972557 | 493 | static int freeze_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh) |
b3b94faa DT |
494 | { |
495 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
feaa7bba | 496 | struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
5c676f6d | 497 | struct gfs2_glock *j_gl = ip->i_gl; |
55167622 | 498 | struct gfs2_log_header_host head; |
b3b94faa DT |
499 | int error; |
500 | ||
6802e340 | 501 | if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { |
1a14d3a6 | 502 | j_gl->gl_ops->go_inval(j_gl, DIO_METADATA); |
b3b94faa DT |
503 | |
504 | error = gfs2_find_jhead(sdp->sd_jdesc, &head); | |
505 | if (error) | |
506 | gfs2_consist(sdp); | |
507 | if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) | |
508 | gfs2_consist(sdp); | |
509 | ||
510 | /* Initialize some head of the log stuff */ | |
511 | if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) { | |
512 | sdp->sd_log_sequence = head.lh_sequence + 1; | |
513 | gfs2_log_pointers_init(sdp, head.lh_blkno); | |
514 | } | |
515 | } | |
6802e340 | 516 | return 0; |
b3b94faa DT |
517 | } |
518 | ||
97cc1025 SW |
519 | /** |
520 | * trans_go_demote_ok | |
521 | * @gl: the glock | |
522 | * | |
523 | * Always returns 0 | |
524 | */ | |
525 | ||
24972557 | 526 | static int freeze_go_demote_ok(const struct gfs2_glock *gl) |
97cc1025 SW |
527 | { |
528 | return 0; | |
529 | } | |
530 | ||
b94a170e BM |
531 | /** |
532 | * iopen_go_callback - schedule the dcache entry for the inode to be deleted | |
533 | * @gl: the glock | |
534 | * | |
535 | * gl_spin lock is held while calling this | |
536 | */ | |
81ffbf65 | 537 | static void iopen_go_callback(struct gfs2_glock *gl, bool remote) |
b94a170e BM |
538 | { |
539 | struct gfs2_inode *ip = (struct gfs2_inode *)gl->gl_object; | |
001e8e8d SW |
540 | struct gfs2_sbd *sdp = gl->gl_sbd; |
541 | ||
81ffbf65 | 542 | if (!remote || (sdp->sd_vfs->s_flags & MS_RDONLY)) |
001e8e8d | 543 | return; |
b94a170e BM |
544 | |
545 | if (gl->gl_demote_state == LM_ST_UNLOCKED && | |
009d8518 | 546 | gl->gl_state == LM_ST_SHARED && ip) { |
e66cf161 | 547 | gl->gl_lockref.count++; |
b94a170e | 548 | if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0) |
e66cf161 | 549 | gl->gl_lockref.count--; |
b94a170e BM |
550 | } |
551 | } | |
552 | ||
8fb4b536 | 553 | const struct gfs2_glock_operations gfs2_meta_glops = { |
ea67eedb | 554 | .go_type = LM_TYPE_META, |
b3b94faa DT |
555 | }; |
556 | ||
8fb4b536 | 557 | const struct gfs2_glock_operations gfs2_inode_glops = { |
06dfc306 | 558 | .go_sync = inode_go_sync, |
b3b94faa DT |
559 | .go_inval = inode_go_inval, |
560 | .go_demote_ok = inode_go_demote_ok, | |
561 | .go_lock = inode_go_lock, | |
6802e340 | 562 | .go_dump = inode_go_dump, |
ea67eedb | 563 | .go_type = LM_TYPE_INODE, |
009d8518 | 564 | .go_flags = GLOF_ASPACE, |
b3b94faa DT |
565 | }; |
566 | ||
8fb4b536 | 567 | const struct gfs2_glock_operations gfs2_rgrp_glops = { |
06dfc306 | 568 | .go_sync = rgrp_go_sync, |
6bac243f | 569 | .go_inval = rgrp_go_inval, |
7c9ca621 BP |
570 | .go_lock = gfs2_rgrp_go_lock, |
571 | .go_unlock = gfs2_rgrp_go_unlock, | |
09010978 | 572 | .go_dump = gfs2_rgrp_dump, |
ea67eedb | 573 | .go_type = LM_TYPE_RGRP, |
70d4ee94 | 574 | .go_flags = GLOF_LVB, |
b3b94faa DT |
575 | }; |
576 | ||
24972557 BM |
577 | const struct gfs2_glock_operations gfs2_freeze_glops = { |
578 | .go_sync = freeze_go_sync, | |
579 | .go_xmote_bh = freeze_go_xmote_bh, | |
580 | .go_demote_ok = freeze_go_demote_ok, | |
ea67eedb | 581 | .go_type = LM_TYPE_NONDISK, |
b3b94faa DT |
582 | }; |
583 | ||
8fb4b536 | 584 | const struct gfs2_glock_operations gfs2_iopen_glops = { |
ea67eedb | 585 | .go_type = LM_TYPE_IOPEN, |
b94a170e | 586 | .go_callback = iopen_go_callback, |
b3b94faa DT |
587 | }; |
588 | ||
8fb4b536 | 589 | const struct gfs2_glock_operations gfs2_flock_glops = { |
ea67eedb | 590 | .go_type = LM_TYPE_FLOCK, |
b3b94faa DT |
591 | }; |
592 | ||
8fb4b536 | 593 | const struct gfs2_glock_operations gfs2_nondisk_glops = { |
ea67eedb | 594 | .go_type = LM_TYPE_NONDISK, |
b3b94faa DT |
595 | }; |
596 | ||
8fb4b536 | 597 | const struct gfs2_glock_operations gfs2_quota_glops = { |
ea67eedb | 598 | .go_type = LM_TYPE_QUOTA, |
dba2d70c | 599 | .go_flags = GLOF_LVB, |
b3b94faa DT |
600 | }; |
601 | ||
8fb4b536 | 602 | const struct gfs2_glock_operations gfs2_journal_glops = { |
ea67eedb | 603 | .go_type = LM_TYPE_JOURNAL, |
b3b94faa DT |
604 | }; |
605 | ||
64d576ba SW |
606 | const struct gfs2_glock_operations *gfs2_glops_list[] = { |
607 | [LM_TYPE_META] = &gfs2_meta_glops, | |
608 | [LM_TYPE_INODE] = &gfs2_inode_glops, | |
609 | [LM_TYPE_RGRP] = &gfs2_rgrp_glops, | |
64d576ba SW |
610 | [LM_TYPE_IOPEN] = &gfs2_iopen_glops, |
611 | [LM_TYPE_FLOCK] = &gfs2_flock_glops, | |
612 | [LM_TYPE_NONDISK] = &gfs2_nondisk_glops, | |
613 | [LM_TYPE_QUOTA] = &gfs2_quota_glops, | |
614 | [LM_TYPE_JOURNAL] = &gfs2_journal_glops, | |
615 | }; | |
616 |