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 | |
75549186 SW |
31 | static 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 | ||
ddacfaf7 | 42 | /** |
dba898b0 | 43 | * __gfs2_ail_flush - remove all buffers for a given lock from the AIL |
ddacfaf7 | 44 | * @gl: the glock |
b5b24d7a | 45 | * @fsync: set when called from fsync (not all buffers will be clean) |
ddacfaf7 SW |
46 | * |
47 | * None of the buffers should be dirty, locked, or pinned. | |
48 | */ | |
49 | ||
1bc333f4 BM |
50 | static void __gfs2_ail_flush(struct gfs2_glock *gl, bool fsync, |
51 | unsigned int nr_revokes) | |
ddacfaf7 SW |
52 | { |
53 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
ddacfaf7 | 54 | struct list_head *head = &gl->gl_ail_list; |
b5b24d7a | 55 | struct gfs2_bufdata *bd, *tmp; |
ddacfaf7 | 56 | struct buffer_head *bh; |
b5b24d7a | 57 | const unsigned long b_state = (1UL << BH_Dirty)|(1UL << BH_Pinned)|(1UL << BH_Lock); |
d8348de0 | 58 | |
b5b24d7a | 59 | gfs2_log_lock(sdp); |
d6a079e8 | 60 | spin_lock(&sdp->sd_ail_lock); |
1bc333f4 BM |
61 | list_for_each_entry_safe_reverse(bd, tmp, head, bd_ail_gl_list) { |
62 | if (nr_revokes == 0) | |
63 | break; | |
ddacfaf7 | 64 | bh = bd->bd_bh; |
b5b24d7a SW |
65 | if (bh->b_state & b_state) { |
66 | if (fsync) | |
67 | continue; | |
75549186 | 68 | gfs2_ail_error(gl, bh); |
b5b24d7a | 69 | } |
1ad38c43 | 70 | gfs2_trans_add_revoke(sdp, bd); |
1bc333f4 | 71 | nr_revokes--; |
ddacfaf7 | 72 | } |
8eae1ca0 | 73 | GLOCK_BUG_ON(gl, !fsync && atomic_read(&gl->gl_ail_count)); |
d6a079e8 | 74 | spin_unlock(&sdp->sd_ail_lock); |
b5b24d7a | 75 | gfs2_log_unlock(sdp); |
dba898b0 SW |
76 | } |
77 | ||
78 | ||
79 | static void gfs2_ail_empty_gl(struct gfs2_glock *gl) | |
80 | { | |
81 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
82 | struct gfs2_trans tr; | |
83 | ||
84 | memset(&tr, 0, sizeof(tr)); | |
d69a3c65 SW |
85 | INIT_LIST_HEAD(&tr.tr_buf); |
86 | INIT_LIST_HEAD(&tr.tr_databuf); | |
dba898b0 SW |
87 | tr.tr_revokes = atomic_read(&gl->gl_ail_count); |
88 | ||
89 | if (!tr.tr_revokes) | |
90 | return; | |
91 | ||
24972557 BM |
92 | /* A shortened, inline version of gfs2_trans_begin() |
93 | * tr->alloced is not set since the transaction structure is | |
94 | * on the stack */ | |
dba898b0 SW |
95 | tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64)); |
96 | tr.tr_ip = (unsigned long)__builtin_return_address(0); | |
a0b4df29 | 97 | sb_start_intwrite(sdp->sd_vfs); |
24972557 BM |
98 | if (gfs2_log_reserve(sdp, tr.tr_reserved) < 0) { |
99 | sb_end_intwrite(sdp->sd_vfs); | |
100 | return; | |
101 | } | |
8eae1ca0 | 102 | WARN_ON_ONCE(current->journal_info); |
dba898b0 SW |
103 | current->journal_info = &tr; |
104 | ||
1bc333f4 | 105 | __gfs2_ail_flush(gl, 0, tr.tr_revokes); |
dba898b0 SW |
106 | |
107 | gfs2_trans_end(sdp); | |
24972557 | 108 | gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); |
dba898b0 | 109 | } |
ddacfaf7 | 110 | |
b5b24d7a | 111 | void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync) |
dba898b0 SW |
112 | { |
113 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
114 | unsigned int revokes = atomic_read(&gl->gl_ail_count); | |
1bc333f4 | 115 | unsigned int max_revokes = (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_log_descriptor)) / sizeof(u64); |
dba898b0 SW |
116 | int ret; |
117 | ||
118 | if (!revokes) | |
119 | return; | |
120 | ||
1bc333f4 BM |
121 | while (revokes > max_revokes) |
122 | max_revokes += (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header)) / sizeof(u64); | |
123 | ||
124 | ret = gfs2_trans_begin(sdp, 0, max_revokes); | |
dba898b0 SW |
125 | if (ret) |
126 | return; | |
1bc333f4 | 127 | __gfs2_ail_flush(gl, fsync, max_revokes); |
ddacfaf7 | 128 | gfs2_trans_end(sdp); |
24972557 | 129 | gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); |
ddacfaf7 | 130 | } |
ba7f7290 SW |
131 | |
132 | /** | |
6bac243f | 133 | * rgrp_go_sync - sync out the metadata for this glock |
b3b94faa | 134 | * @gl: the glock |
b3b94faa DT |
135 | * |
136 | * Called when demoting or unlocking an EX glock. We must flush | |
137 | * to disk all dirty buffers/pages relating to this glock, and must not | |
138 | * not return to caller to demote/unlock the glock until I/O is complete. | |
139 | */ | |
140 | ||
6bac243f | 141 | static void rgrp_go_sync(struct gfs2_glock *gl) |
b3b94faa | 142 | { |
70d4ee94 SW |
143 | struct gfs2_sbd *sdp = gl->gl_sbd; |
144 | struct address_space *mapping = &sdp->sd_aspace; | |
8339ee54 | 145 | struct gfs2_rgrpd *rgd; |
6bac243f SW |
146 | int error; |
147 | ||
148 | if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) | |
b5d32bea | 149 | return; |
8eae1ca0 | 150 | GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE); |
b5d32bea | 151 | |
24972557 | 152 | gfs2_log_flush(sdp, gl, NORMAL_FLUSH); |
70d4ee94 SW |
153 | filemap_fdatawrite_range(mapping, gl->gl_vm.start, gl->gl_vm.end); |
154 | error = filemap_fdatawait_range(mapping, gl->gl_vm.start, gl->gl_vm.end); | |
155 | mapping_set_error(mapping, error); | |
6bac243f | 156 | gfs2_ail_empty_gl(gl); |
7c9ca621 | 157 | |
8339ee54 SW |
158 | spin_lock(&gl->gl_spin); |
159 | rgd = gl->gl_object; | |
160 | if (rgd) | |
161 | gfs2_free_clones(rgd); | |
162 | spin_unlock(&gl->gl_spin); | |
b3b94faa DT |
163 | } |
164 | ||
165 | /** | |
6bac243f | 166 | * rgrp_go_inval - invalidate the metadata for this glock |
b3b94faa DT |
167 | * @gl: the glock |
168 | * @flags: | |
169 | * | |
6bac243f SW |
170 | * We never used LM_ST_DEFERRED with resource groups, so that we |
171 | * should always see the metadata flag set here. | |
172 | * | |
b3b94faa DT |
173 | */ |
174 | ||
6bac243f | 175 | static void rgrp_go_inval(struct gfs2_glock *gl, int flags) |
b3b94faa | 176 | { |
70d4ee94 SW |
177 | struct gfs2_sbd *sdp = gl->gl_sbd; |
178 | struct address_space *mapping = &sdp->sd_aspace; | |
b3b94faa | 179 | |
8eae1ca0 | 180 | WARN_ON_ONCE(!(flags & DIO_METADATA)); |
70d4ee94 | 181 | gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count)); |
7005c3e4 | 182 | truncate_inode_pages_range(mapping, gl->gl_vm.start, gl->gl_vm.end); |
cf45b752 | 183 | |
6bac243f SW |
184 | if (gl->gl_object) { |
185 | struct gfs2_rgrpd *rgd = (struct gfs2_rgrpd *)gl->gl_object; | |
cf45b752 BP |
186 | rgd->rd_flags &= ~GFS2_RDF_UPTODATE; |
187 | } | |
b3b94faa DT |
188 | } |
189 | ||
b5d32bea SW |
190 | /** |
191 | * inode_go_sync - Sync the dirty data and/or metadata for an inode glock | |
192 | * @gl: the glock protecting the inode | |
193 | * | |
194 | */ | |
195 | ||
196 | static void inode_go_sync(struct gfs2_glock *gl) | |
197 | { | |
198 | struct gfs2_inode *ip = gl->gl_object; | |
009d8518 | 199 | struct address_space *metamapping = gfs2_glock2aspace(gl); |
3042a2cc SW |
200 | int error; |
201 | ||
b5d32bea SW |
202 | if (ip && !S_ISREG(ip->i_inode.i_mode)) |
203 | ip = NULL; | |
582d2f7a SW |
204 | if (ip) { |
205 | if (test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags)) | |
206 | unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0); | |
207 | inode_dio_wait(&ip->i_inode); | |
208 | } | |
6bac243f SW |
209 | if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) |
210 | return; | |
b5d32bea | 211 | |
8eae1ca0 | 212 | GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE); |
6bac243f | 213 | |
24972557 | 214 | gfs2_log_flush(gl->gl_sbd, gl, NORMAL_FLUSH); |
6bac243f SW |
215 | filemap_fdatawrite(metamapping); |
216 | if (ip) { | |
217 | struct address_space *mapping = ip->i_inode.i_mapping; | |
218 | filemap_fdatawrite(mapping); | |
219 | error = filemap_fdatawait(mapping); | |
220 | mapping_set_error(mapping, error); | |
b5d32bea | 221 | } |
6bac243f SW |
222 | error = filemap_fdatawait(metamapping); |
223 | mapping_set_error(metamapping, error); | |
224 | gfs2_ail_empty_gl(gl); | |
52fcd11c SW |
225 | /* |
226 | * Writeback of the data mapping may cause the dirty flag to be set | |
227 | * so we have to clear it again here. | |
228 | */ | |
4e857c58 | 229 | smp_mb__before_atomic(); |
52fcd11c | 230 | clear_bit(GLF_DIRTY, &gl->gl_flags); |
b5d32bea SW |
231 | } |
232 | ||
b3b94faa DT |
233 | /** |
234 | * inode_go_inval - prepare a inode glock to be released | |
235 | * @gl: the glock | |
236 | * @flags: | |
6bac243f SW |
237 | * |
238 | * Normally we invlidate everything, but if we are moving into | |
239 | * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we | |
240 | * can keep hold of the metadata, since it won't have changed. | |
b3b94faa DT |
241 | * |
242 | */ | |
243 | ||
244 | static void inode_go_inval(struct gfs2_glock *gl, int flags) | |
245 | { | |
b004157a | 246 | struct gfs2_inode *ip = gl->gl_object; |
b3b94faa | 247 | |
6bac243f SW |
248 | gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count)); |
249 | ||
250 | if (flags & DIO_METADATA) { | |
009d8518 | 251 | struct address_space *mapping = gfs2_glock2aspace(gl); |
6bac243f | 252 | truncate_inode_pages(mapping, 0); |
c65f7fb5 | 253 | if (ip) { |
b004157a | 254 | set_bit(GIF_INVALID, &ip->i_flags); |
c65f7fb5 | 255 | forget_all_cached_acls(&ip->i_inode); |
17d539f0 | 256 | gfs2_dir_hash_inval(ip); |
c65f7fb5 | 257 | } |
b004157a SW |
258 | } |
259 | ||
1ce53368 | 260 | if (ip == GFS2_I(gl->gl_sbd->sd_rindex)) { |
24972557 | 261 | gfs2_log_flush(gl->gl_sbd, NULL, NORMAL_FLUSH); |
6bac243f | 262 | gl->gl_sbd->sd_rindex_uptodate = 0; |
1ce53368 | 263 | } |
3cc3f710 | 264 | if (ip && S_ISREG(ip->i_inode.i_mode)) |
b004157a | 265 | truncate_inode_pages(ip->i_inode.i_mapping, 0); |
b3b94faa DT |
266 | } |
267 | ||
268 | /** | |
269 | * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock | |
270 | * @gl: the glock | |
271 | * | |
272 | * Returns: 1 if it's ok | |
273 | */ | |
274 | ||
97cc1025 | 275 | static int inode_go_demote_ok(const struct gfs2_glock *gl) |
b3b94faa DT |
276 | { |
277 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
bc015cb8 SW |
278 | struct gfs2_holder *gh; |
279 | ||
97cc1025 SW |
280 | if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object) |
281 | return 0; | |
bc015cb8 SW |
282 | |
283 | if (!list_empty(&gl->gl_holders)) { | |
284 | gh = list_entry(gl->gl_holders.next, struct gfs2_holder, gh_list); | |
285 | if (gh->gh_list.next != &gl->gl_holders) | |
286 | return 0; | |
287 | } | |
288 | ||
97cc1025 | 289 | return 1; |
b3b94faa DT |
290 | } |
291 | ||
d4b2cf1b SW |
292 | /** |
293 | * gfs2_set_nlink - Set the inode's link count based on on-disk info | |
294 | * @inode: The inode in question | |
295 | * @nlink: The link count | |
296 | * | |
297 | * If the link count has hit zero, it must never be raised, whatever the | |
298 | * on-disk inode might say. When new struct inodes are created the link | |
299 | * count is set to 1, so that we can safely use this test even when reading | |
300 | * in on disk information for the first time. | |
301 | */ | |
302 | ||
303 | static void gfs2_set_nlink(struct inode *inode, u32 nlink) | |
304 | { | |
305 | /* | |
306 | * We will need to review setting the nlink count here in the | |
307 | * light of the forthcoming ro bind mount work. This is a reminder | |
308 | * to do that. | |
309 | */ | |
310 | if ((inode->i_nlink != nlink) && (inode->i_nlink != 0)) { | |
311 | if (nlink == 0) | |
312 | clear_nlink(inode); | |
313 | else | |
bfe86848 | 314 | set_nlink(inode, nlink); |
d4b2cf1b SW |
315 | } |
316 | } | |
317 | ||
318 | static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) | |
319 | { | |
320 | const struct gfs2_dinode *str = buf; | |
321 | struct timespec atime; | |
322 | u16 height, depth; | |
323 | ||
324 | if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr))) | |
325 | goto corrupt; | |
326 | ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino); | |
327 | ip->i_inode.i_mode = be32_to_cpu(str->di_mode); | |
328 | ip->i_inode.i_rdev = 0; | |
329 | switch (ip->i_inode.i_mode & S_IFMT) { | |
330 | case S_IFBLK: | |
331 | case S_IFCHR: | |
332 | ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major), | |
333 | be32_to_cpu(str->di_minor)); | |
334 | break; | |
335 | }; | |
336 | ||
d0546426 EB |
337 | i_uid_write(&ip->i_inode, be32_to_cpu(str->di_uid)); |
338 | i_gid_write(&ip->i_inode, be32_to_cpu(str->di_gid)); | |
d4b2cf1b SW |
339 | gfs2_set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink)); |
340 | i_size_write(&ip->i_inode, be64_to_cpu(str->di_size)); | |
341 | gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks)); | |
342 | atime.tv_sec = be64_to_cpu(str->di_atime); | |
343 | atime.tv_nsec = be32_to_cpu(str->di_atime_nsec); | |
344 | if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0) | |
345 | ip->i_inode.i_atime = atime; | |
346 | ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime); | |
347 | ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec); | |
348 | ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime); | |
349 | ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec); | |
350 | ||
351 | ip->i_goal = be64_to_cpu(str->di_goal_meta); | |
352 | ip->i_generation = be64_to_cpu(str->di_generation); | |
353 | ||
354 | ip->i_diskflags = be32_to_cpu(str->di_flags); | |
9964afbb SW |
355 | ip->i_eattr = be64_to_cpu(str->di_eattr); |
356 | /* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */ | |
d4b2cf1b SW |
357 | gfs2_set_inode_flags(&ip->i_inode); |
358 | height = be16_to_cpu(str->di_height); | |
359 | if (unlikely(height > GFS2_MAX_META_HEIGHT)) | |
360 | goto corrupt; | |
361 | ip->i_height = (u8)height; | |
362 | ||
363 | depth = be16_to_cpu(str->di_depth); | |
364 | if (unlikely(depth > GFS2_DIR_MAX_DEPTH)) | |
365 | goto corrupt; | |
366 | ip->i_depth = (u8)depth; | |
367 | ip->i_entries = be32_to_cpu(str->di_entries); | |
368 | ||
d4b2cf1b SW |
369 | if (S_ISREG(ip->i_inode.i_mode)) |
370 | gfs2_set_aops(&ip->i_inode); | |
371 | ||
372 | return 0; | |
373 | corrupt: | |
374 | gfs2_consist_inode(ip); | |
375 | return -EIO; | |
376 | } | |
377 | ||
378 | /** | |
379 | * gfs2_inode_refresh - Refresh the incore copy of the dinode | |
380 | * @ip: The GFS2 inode | |
381 | * | |
382 | * Returns: errno | |
383 | */ | |
384 | ||
385 | int gfs2_inode_refresh(struct gfs2_inode *ip) | |
386 | { | |
387 | struct buffer_head *dibh; | |
388 | int error; | |
389 | ||
390 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
391 | if (error) | |
392 | return error; | |
393 | ||
d4b2cf1b SW |
394 | error = gfs2_dinode_in(ip, dibh->b_data); |
395 | brelse(dibh); | |
396 | clear_bit(GIF_INVALID, &ip->i_flags); | |
397 | ||
398 | return error; | |
399 | } | |
400 | ||
b3b94faa DT |
401 | /** |
402 | * inode_go_lock - operation done after an inode lock is locked by a process | |
403 | * @gl: the glock | |
404 | * @flags: | |
405 | * | |
406 | * Returns: errno | |
407 | */ | |
408 | ||
409 | static int inode_go_lock(struct gfs2_holder *gh) | |
410 | { | |
411 | struct gfs2_glock *gl = gh->gh_gl; | |
813e0c46 | 412 | struct gfs2_sbd *sdp = gl->gl_sbd; |
5c676f6d | 413 | struct gfs2_inode *ip = gl->gl_object; |
b3b94faa DT |
414 | int error = 0; |
415 | ||
091806ed | 416 | if (!ip || (gh->gh_flags & GL_SKIP)) |
b3b94faa DT |
417 | return 0; |
418 | ||
bfded27b | 419 | if (test_bit(GIF_INVALID, &ip->i_flags)) { |
b3b94faa DT |
420 | error = gfs2_inode_refresh(ip); |
421 | if (error) | |
422 | return error; | |
b3b94faa DT |
423 | } |
424 | ||
582d2f7a SW |
425 | if (gh->gh_state != LM_ST_DEFERRED) |
426 | inode_dio_wait(&ip->i_inode); | |
427 | ||
383f01fb | 428 | if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) && |
b3b94faa | 429 | (gl->gl_state == LM_ST_EXCLUSIVE) && |
813e0c46 SW |
430 | (gh->gh_state == LM_ST_EXCLUSIVE)) { |
431 | spin_lock(&sdp->sd_trunc_lock); | |
432 | if (list_empty(&ip->i_trunc_list)) | |
433 | list_add(&sdp->sd_trunc_list, &ip->i_trunc_list); | |
434 | spin_unlock(&sdp->sd_trunc_lock); | |
435 | wake_up(&sdp->sd_quota_wait); | |
436 | return 1; | |
437 | } | |
b3b94faa DT |
438 | |
439 | return error; | |
440 | } | |
441 | ||
6802e340 SW |
442 | /** |
443 | * inode_go_dump - print information about an inode | |
444 | * @seq: The iterator | |
445 | * @ip: the inode | |
446 | * | |
6802e340 SW |
447 | */ |
448 | ||
ac3beb6a | 449 | static void inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl) |
6802e340 SW |
450 | { |
451 | const struct gfs2_inode *ip = gl->gl_object; | |
452 | if (ip == NULL) | |
ac3beb6a | 453 | return; |
a2e0f799 | 454 | gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu\n", |
6802e340 SW |
455 | (unsigned long long)ip->i_no_formal_ino, |
456 | (unsigned long long)ip->i_no_addr, | |
fa75cedc SW |
457 | IF2DT(ip->i_inode.i_mode), ip->i_flags, |
458 | (unsigned int)ip->i_diskflags, | |
a2e0f799 | 459 | (unsigned long long)i_size_read(&ip->i_inode)); |
6802e340 SW |
460 | } |
461 | ||
b3b94faa | 462 | /** |
24972557 | 463 | * freeze_go_sync - promote/demote the freeze glock |
b3b94faa DT |
464 | * @gl: the glock |
465 | * @state: the requested state | |
466 | * @flags: | |
467 | * | |
468 | */ | |
469 | ||
24972557 | 470 | static void freeze_go_sync(struct gfs2_glock *gl) |
b3b94faa DT |
471 | { |
472 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
24972557 | 473 | DEFINE_WAIT(wait); |
b3b94faa | 474 | |
24972557 | 475 | if (gl->gl_state == LM_ST_SHARED && |
b3b94faa | 476 | test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { |
24972557 BM |
477 | atomic_set(&sdp->sd_log_freeze, 1); |
478 | wake_up(&sdp->sd_logd_waitq); | |
479 | do { | |
480 | prepare_to_wait(&sdp->sd_log_frozen_wait, &wait, | |
481 | TASK_UNINTERRUPTIBLE); | |
482 | if (atomic_read(&sdp->sd_log_freeze)) | |
483 | io_schedule(); | |
484 | } while(atomic_read(&sdp->sd_log_freeze)); | |
485 | finish_wait(&sdp->sd_log_frozen_wait, &wait); | |
b3b94faa | 486 | } |
b3b94faa DT |
487 | } |
488 | ||
489 | /** | |
24972557 | 490 | * freeze_go_xmote_bh - After promoting/demoting the freeze glock |
b3b94faa DT |
491 | * @gl: the glock |
492 | * | |
493 | */ | |
494 | ||
24972557 | 495 | static int freeze_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh) |
b3b94faa DT |
496 | { |
497 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
feaa7bba | 498 | struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
5c676f6d | 499 | struct gfs2_glock *j_gl = ip->i_gl; |
55167622 | 500 | struct gfs2_log_header_host head; |
b3b94faa DT |
501 | int error; |
502 | ||
6802e340 | 503 | if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { |
1a14d3a6 | 504 | j_gl->gl_ops->go_inval(j_gl, DIO_METADATA); |
b3b94faa DT |
505 | |
506 | error = gfs2_find_jhead(sdp->sd_jdesc, &head); | |
507 | if (error) | |
508 | gfs2_consist(sdp); | |
509 | if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) | |
510 | gfs2_consist(sdp); | |
511 | ||
512 | /* Initialize some head of the log stuff */ | |
513 | if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) { | |
514 | sdp->sd_log_sequence = head.lh_sequence + 1; | |
515 | gfs2_log_pointers_init(sdp, head.lh_blkno); | |
516 | } | |
517 | } | |
6802e340 | 518 | return 0; |
b3b94faa DT |
519 | } |
520 | ||
97cc1025 SW |
521 | /** |
522 | * trans_go_demote_ok | |
523 | * @gl: the glock | |
524 | * | |
525 | * Always returns 0 | |
526 | */ | |
527 | ||
24972557 | 528 | static int freeze_go_demote_ok(const struct gfs2_glock *gl) |
97cc1025 SW |
529 | { |
530 | return 0; | |
531 | } | |
532 | ||
b94a170e BM |
533 | /** |
534 | * iopen_go_callback - schedule the dcache entry for the inode to be deleted | |
535 | * @gl: the glock | |
536 | * | |
537 | * gl_spin lock is held while calling this | |
538 | */ | |
81ffbf65 | 539 | static void iopen_go_callback(struct gfs2_glock *gl, bool remote) |
b94a170e BM |
540 | { |
541 | struct gfs2_inode *ip = (struct gfs2_inode *)gl->gl_object; | |
001e8e8d SW |
542 | struct gfs2_sbd *sdp = gl->gl_sbd; |
543 | ||
81ffbf65 | 544 | if (!remote || (sdp->sd_vfs->s_flags & MS_RDONLY)) |
001e8e8d | 545 | return; |
b94a170e BM |
546 | |
547 | if (gl->gl_demote_state == LM_ST_UNLOCKED && | |
009d8518 | 548 | gl->gl_state == LM_ST_SHARED && ip) { |
e66cf161 | 549 | gl->gl_lockref.count++; |
b94a170e | 550 | if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0) |
e66cf161 | 551 | gl->gl_lockref.count--; |
b94a170e BM |
552 | } |
553 | } | |
554 | ||
8fb4b536 | 555 | const struct gfs2_glock_operations gfs2_meta_glops = { |
ea67eedb | 556 | .go_type = LM_TYPE_META, |
b3b94faa DT |
557 | }; |
558 | ||
8fb4b536 | 559 | const struct gfs2_glock_operations gfs2_inode_glops = { |
06dfc306 | 560 | .go_sync = inode_go_sync, |
b3b94faa DT |
561 | .go_inval = inode_go_inval, |
562 | .go_demote_ok = inode_go_demote_ok, | |
563 | .go_lock = inode_go_lock, | |
6802e340 | 564 | .go_dump = inode_go_dump, |
ea67eedb | 565 | .go_type = LM_TYPE_INODE, |
009d8518 | 566 | .go_flags = GLOF_ASPACE, |
b3b94faa DT |
567 | }; |
568 | ||
8fb4b536 | 569 | const struct gfs2_glock_operations gfs2_rgrp_glops = { |
06dfc306 | 570 | .go_sync = rgrp_go_sync, |
6bac243f | 571 | .go_inval = rgrp_go_inval, |
7c9ca621 BP |
572 | .go_lock = gfs2_rgrp_go_lock, |
573 | .go_unlock = gfs2_rgrp_go_unlock, | |
09010978 | 574 | .go_dump = gfs2_rgrp_dump, |
ea67eedb | 575 | .go_type = LM_TYPE_RGRP, |
70d4ee94 | 576 | .go_flags = GLOF_LVB, |
b3b94faa DT |
577 | }; |
578 | ||
24972557 BM |
579 | const struct gfs2_glock_operations gfs2_freeze_glops = { |
580 | .go_sync = freeze_go_sync, | |
581 | .go_xmote_bh = freeze_go_xmote_bh, | |
582 | .go_demote_ok = freeze_go_demote_ok, | |
ea67eedb | 583 | .go_type = LM_TYPE_NONDISK, |
b3b94faa DT |
584 | }; |
585 | ||
8fb4b536 | 586 | const struct gfs2_glock_operations gfs2_iopen_glops = { |
ea67eedb | 587 | .go_type = LM_TYPE_IOPEN, |
b94a170e | 588 | .go_callback = iopen_go_callback, |
b3b94faa DT |
589 | }; |
590 | ||
8fb4b536 | 591 | const struct gfs2_glock_operations gfs2_flock_glops = { |
ea67eedb | 592 | .go_type = LM_TYPE_FLOCK, |
b3b94faa DT |
593 | }; |
594 | ||
8fb4b536 | 595 | const struct gfs2_glock_operations gfs2_nondisk_glops = { |
ea67eedb | 596 | .go_type = LM_TYPE_NONDISK, |
b3b94faa DT |
597 | }; |
598 | ||
8fb4b536 | 599 | const struct gfs2_glock_operations gfs2_quota_glops = { |
ea67eedb | 600 | .go_type = LM_TYPE_QUOTA, |
dba2d70c | 601 | .go_flags = GLOF_LVB, |
b3b94faa DT |
602 | }; |
603 | ||
8fb4b536 | 604 | const struct gfs2_glock_operations gfs2_journal_glops = { |
ea67eedb | 605 | .go_type = LM_TYPE_JOURNAL, |
b3b94faa DT |
606 | }; |
607 | ||
64d576ba SW |
608 | const struct gfs2_glock_operations *gfs2_glops_list[] = { |
609 | [LM_TYPE_META] = &gfs2_meta_glops, | |
610 | [LM_TYPE_INODE] = &gfs2_inode_glops, | |
611 | [LM_TYPE_RGRP] = &gfs2_rgrp_glops, | |
64d576ba SW |
612 | [LM_TYPE_IOPEN] = &gfs2_iopen_glops, |
613 | [LM_TYPE_FLOCK] = &gfs2_flock_glops, | |
614 | [LM_TYPE_NONDISK] = &gfs2_nondisk_glops, | |
615 | [LM_TYPE_QUOTA] = &gfs2_quota_glops, | |
616 | [LM_TYPE_JOURNAL] = &gfs2_journal_glops, | |
617 | }; | |
618 |