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Commit | Line | Data |
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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)); | |
85 | tr.tr_revokes = atomic_read(&gl->gl_ail_count); | |
86 | ||
87 | if (!tr.tr_revokes) | |
88 | return; | |
89 | ||
90 | /* A shortened, inline version of gfs2_trans_begin() */ | |
91 | tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64)); | |
92 | tr.tr_ip = (unsigned long)__builtin_return_address(0); | |
a0b4df29 | 93 | sb_start_intwrite(sdp->sd_vfs); |
dba898b0 | 94 | gfs2_log_reserve(sdp, tr.tr_reserved); |
8eae1ca0 | 95 | WARN_ON_ONCE(current->journal_info); |
dba898b0 SW |
96 | current->journal_info = &tr; |
97 | ||
1bc333f4 | 98 | __gfs2_ail_flush(gl, 0, tr.tr_revokes); |
dba898b0 SW |
99 | |
100 | gfs2_trans_end(sdp); | |
101 | gfs2_log_flush(sdp, NULL); | |
102 | } | |
ddacfaf7 | 103 | |
b5b24d7a | 104 | void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync) |
dba898b0 SW |
105 | { |
106 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
107 | unsigned int revokes = atomic_read(&gl->gl_ail_count); | |
1bc333f4 | 108 | unsigned int max_revokes = (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_log_descriptor)) / sizeof(u64); |
dba898b0 SW |
109 | int ret; |
110 | ||
111 | if (!revokes) | |
112 | return; | |
113 | ||
1bc333f4 BM |
114 | while (revokes > max_revokes) |
115 | max_revokes += (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header)) / sizeof(u64); | |
116 | ||
117 | ret = gfs2_trans_begin(sdp, 0, max_revokes); | |
dba898b0 SW |
118 | if (ret) |
119 | return; | |
1bc333f4 | 120 | __gfs2_ail_flush(gl, fsync, max_revokes); |
ddacfaf7 SW |
121 | gfs2_trans_end(sdp); |
122 | gfs2_log_flush(sdp, NULL); | |
123 | } | |
ba7f7290 SW |
124 | |
125 | /** | |
6bac243f | 126 | * rgrp_go_sync - sync out the metadata for this glock |
b3b94faa | 127 | * @gl: the glock |
b3b94faa DT |
128 | * |
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 | ||
6bac243f | 134 | static void rgrp_go_sync(struct gfs2_glock *gl) |
b3b94faa | 135 | { |
70d4ee94 SW |
136 | struct gfs2_sbd *sdp = gl->gl_sbd; |
137 | struct address_space *mapping = &sdp->sd_aspace; | |
8339ee54 | 138 | struct gfs2_rgrpd *rgd; |
6bac243f SW |
139 | int error; |
140 | ||
141 | if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) | |
b5d32bea | 142 | return; |
8eae1ca0 | 143 | GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE); |
b5d32bea | 144 | |
70d4ee94 SW |
145 | gfs2_log_flush(sdp, gl); |
146 | filemap_fdatawrite_range(mapping, gl->gl_vm.start, gl->gl_vm.end); | |
147 | error = filemap_fdatawait_range(mapping, gl->gl_vm.start, gl->gl_vm.end); | |
148 | mapping_set_error(mapping, error); | |
6bac243f | 149 | gfs2_ail_empty_gl(gl); |
7c9ca621 | 150 | |
8339ee54 SW |
151 | spin_lock(&gl->gl_spin); |
152 | rgd = gl->gl_object; | |
153 | if (rgd) | |
154 | gfs2_free_clones(rgd); | |
155 | spin_unlock(&gl->gl_spin); | |
b3b94faa DT |
156 | } |
157 | ||
158 | /** | |
6bac243f | 159 | * rgrp_go_inval - invalidate the metadata for this glock |
b3b94faa DT |
160 | * @gl: the glock |
161 | * @flags: | |
162 | * | |
6bac243f SW |
163 | * We never used LM_ST_DEFERRED with resource groups, so that we |
164 | * should always see the metadata flag set here. | |
165 | * | |
b3b94faa DT |
166 | */ |
167 | ||
6bac243f | 168 | static void rgrp_go_inval(struct gfs2_glock *gl, int flags) |
b3b94faa | 169 | { |
70d4ee94 SW |
170 | struct gfs2_sbd *sdp = gl->gl_sbd; |
171 | struct address_space *mapping = &sdp->sd_aspace; | |
b3b94faa | 172 | |
8eae1ca0 | 173 | WARN_ON_ONCE(!(flags & DIO_METADATA)); |
70d4ee94 | 174 | gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count)); |
7005c3e4 | 175 | truncate_inode_pages_range(mapping, gl->gl_vm.start, gl->gl_vm.end); |
cf45b752 | 176 | |
6bac243f SW |
177 | if (gl->gl_object) { |
178 | struct gfs2_rgrpd *rgd = (struct gfs2_rgrpd *)gl->gl_object; | |
cf45b752 BP |
179 | rgd->rd_flags &= ~GFS2_RDF_UPTODATE; |
180 | } | |
b3b94faa DT |
181 | } |
182 | ||
b5d32bea SW |
183 | /** |
184 | * inode_go_sync - Sync the dirty data and/or metadata for an inode glock | |
185 | * @gl: the glock protecting the inode | |
186 | * | |
187 | */ | |
188 | ||
189 | static void inode_go_sync(struct gfs2_glock *gl) | |
190 | { | |
191 | struct gfs2_inode *ip = gl->gl_object; | |
009d8518 | 192 | struct address_space *metamapping = gfs2_glock2aspace(gl); |
3042a2cc SW |
193 | int error; |
194 | ||
b5d32bea SW |
195 | if (ip && !S_ISREG(ip->i_inode.i_mode)) |
196 | ip = NULL; | |
582d2f7a SW |
197 | if (ip) { |
198 | if (test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags)) | |
199 | unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0); | |
200 | inode_dio_wait(&ip->i_inode); | |
201 | } | |
6bac243f SW |
202 | if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) |
203 | return; | |
b5d32bea | 204 | |
8eae1ca0 | 205 | GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE); |
6bac243f SW |
206 | |
207 | gfs2_log_flush(gl->gl_sbd, gl); | |
208 | filemap_fdatawrite(metamapping); | |
209 | if (ip) { | |
210 | struct address_space *mapping = ip->i_inode.i_mapping; | |
211 | filemap_fdatawrite(mapping); | |
212 | error = filemap_fdatawait(mapping); | |
213 | mapping_set_error(mapping, error); | |
b5d32bea | 214 | } |
6bac243f SW |
215 | error = filemap_fdatawait(metamapping); |
216 | mapping_set_error(metamapping, error); | |
217 | gfs2_ail_empty_gl(gl); | |
52fcd11c SW |
218 | /* |
219 | * Writeback of the data mapping may cause the dirty flag to be set | |
220 | * so we have to clear it again here. | |
221 | */ | |
222 | smp_mb__before_clear_bit(); | |
223 | clear_bit(GLF_DIRTY, &gl->gl_flags); | |
b5d32bea SW |
224 | } |
225 | ||
b3b94faa DT |
226 | /** |
227 | * inode_go_inval - prepare a inode glock to be released | |
228 | * @gl: the glock | |
229 | * @flags: | |
6bac243f SW |
230 | * |
231 | * Normally we invlidate everything, but if we are moving into | |
232 | * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we | |
233 | * can keep hold of the metadata, since it won't have changed. | |
b3b94faa DT |
234 | * |
235 | */ | |
236 | ||
237 | static void inode_go_inval(struct gfs2_glock *gl, int flags) | |
238 | { | |
b004157a | 239 | struct gfs2_inode *ip = gl->gl_object; |
b3b94faa | 240 | |
6bac243f SW |
241 | gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count)); |
242 | ||
243 | if (flags & DIO_METADATA) { | |
009d8518 | 244 | struct address_space *mapping = gfs2_glock2aspace(gl); |
6bac243f | 245 | truncate_inode_pages(mapping, 0); |
c65f7fb5 | 246 | if (ip) { |
b004157a | 247 | set_bit(GIF_INVALID, &ip->i_flags); |
c65f7fb5 | 248 | forget_all_cached_acls(&ip->i_inode); |
17d539f0 | 249 | gfs2_dir_hash_inval(ip); |
c65f7fb5 | 250 | } |
b004157a SW |
251 | } |
252 | ||
1ce53368 BM |
253 | if (ip == GFS2_I(gl->gl_sbd->sd_rindex)) { |
254 | gfs2_log_flush(gl->gl_sbd, NULL); | |
6bac243f | 255 | gl->gl_sbd->sd_rindex_uptodate = 0; |
1ce53368 | 256 | } |
3cc3f710 | 257 | if (ip && S_ISREG(ip->i_inode.i_mode)) |
b004157a | 258 | truncate_inode_pages(ip->i_inode.i_mapping, 0); |
b3b94faa DT |
259 | } |
260 | ||
261 | /** | |
262 | * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock | |
263 | * @gl: the glock | |
264 | * | |
265 | * Returns: 1 if it's ok | |
266 | */ | |
267 | ||
97cc1025 | 268 | static int inode_go_demote_ok(const struct gfs2_glock *gl) |
b3b94faa DT |
269 | { |
270 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
bc015cb8 SW |
271 | struct gfs2_holder *gh; |
272 | ||
97cc1025 SW |
273 | if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object) |
274 | return 0; | |
bc015cb8 SW |
275 | |
276 | if (!list_empty(&gl->gl_holders)) { | |
277 | gh = list_entry(gl->gl_holders.next, struct gfs2_holder, gh_list); | |
278 | if (gh->gh_list.next != &gl->gl_holders) | |
279 | return 0; | |
280 | } | |
281 | ||
97cc1025 | 282 | return 1; |
b3b94faa DT |
283 | } |
284 | ||
d4b2cf1b SW |
285 | /** |
286 | * gfs2_set_nlink - Set the inode's link count based on on-disk info | |
287 | * @inode: The inode in question | |
288 | * @nlink: The link count | |
289 | * | |
290 | * If the link count has hit zero, it must never be raised, whatever the | |
291 | * on-disk inode might say. When new struct inodes are created the link | |
292 | * count is set to 1, so that we can safely use this test even when reading | |
293 | * in on disk information for the first time. | |
294 | */ | |
295 | ||
296 | static void gfs2_set_nlink(struct inode *inode, u32 nlink) | |
297 | { | |
298 | /* | |
299 | * We will need to review setting the nlink count here in the | |
300 | * light of the forthcoming ro bind mount work. This is a reminder | |
301 | * to do that. | |
302 | */ | |
303 | if ((inode->i_nlink != nlink) && (inode->i_nlink != 0)) { | |
304 | if (nlink == 0) | |
305 | clear_nlink(inode); | |
306 | else | |
bfe86848 | 307 | set_nlink(inode, nlink); |
d4b2cf1b SW |
308 | } |
309 | } | |
310 | ||
311 | static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) | |
312 | { | |
313 | const struct gfs2_dinode *str = buf; | |
314 | struct timespec atime; | |
315 | u16 height, depth; | |
316 | ||
317 | if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr))) | |
318 | goto corrupt; | |
319 | ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino); | |
320 | ip->i_inode.i_mode = be32_to_cpu(str->di_mode); | |
321 | ip->i_inode.i_rdev = 0; | |
322 | switch (ip->i_inode.i_mode & S_IFMT) { | |
323 | case S_IFBLK: | |
324 | case S_IFCHR: | |
325 | ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major), | |
326 | be32_to_cpu(str->di_minor)); | |
327 | break; | |
328 | }; | |
329 | ||
d0546426 EB |
330 | i_uid_write(&ip->i_inode, be32_to_cpu(str->di_uid)); |
331 | i_gid_write(&ip->i_inode, be32_to_cpu(str->di_gid)); | |
d4b2cf1b SW |
332 | gfs2_set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink)); |
333 | i_size_write(&ip->i_inode, be64_to_cpu(str->di_size)); | |
334 | gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks)); | |
335 | atime.tv_sec = be64_to_cpu(str->di_atime); | |
336 | atime.tv_nsec = be32_to_cpu(str->di_atime_nsec); | |
337 | if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0) | |
338 | ip->i_inode.i_atime = atime; | |
339 | ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime); | |
340 | ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec); | |
341 | ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime); | |
342 | ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec); | |
343 | ||
344 | ip->i_goal = be64_to_cpu(str->di_goal_meta); | |
345 | ip->i_generation = be64_to_cpu(str->di_generation); | |
346 | ||
347 | ip->i_diskflags = be32_to_cpu(str->di_flags); | |
9964afbb SW |
348 | ip->i_eattr = be64_to_cpu(str->di_eattr); |
349 | /* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */ | |
d4b2cf1b SW |
350 | gfs2_set_inode_flags(&ip->i_inode); |
351 | height = be16_to_cpu(str->di_height); | |
352 | if (unlikely(height > GFS2_MAX_META_HEIGHT)) | |
353 | goto corrupt; | |
354 | ip->i_height = (u8)height; | |
355 | ||
356 | depth = be16_to_cpu(str->di_depth); | |
357 | if (unlikely(depth > GFS2_DIR_MAX_DEPTH)) | |
358 | goto corrupt; | |
359 | ip->i_depth = (u8)depth; | |
360 | ip->i_entries = be32_to_cpu(str->di_entries); | |
361 | ||
d4b2cf1b SW |
362 | if (S_ISREG(ip->i_inode.i_mode)) |
363 | gfs2_set_aops(&ip->i_inode); | |
364 | ||
365 | return 0; | |
366 | corrupt: | |
367 | gfs2_consist_inode(ip); | |
368 | return -EIO; | |
369 | } | |
370 | ||
371 | /** | |
372 | * gfs2_inode_refresh - Refresh the incore copy of the dinode | |
373 | * @ip: The GFS2 inode | |
374 | * | |
375 | * Returns: errno | |
376 | */ | |
377 | ||
378 | int gfs2_inode_refresh(struct gfs2_inode *ip) | |
379 | { | |
380 | struct buffer_head *dibh; | |
381 | int error; | |
382 | ||
383 | error = gfs2_meta_inode_buffer(ip, &dibh); | |
384 | if (error) | |
385 | return error; | |
386 | ||
d4b2cf1b SW |
387 | error = gfs2_dinode_in(ip, dibh->b_data); |
388 | brelse(dibh); | |
389 | clear_bit(GIF_INVALID, &ip->i_flags); | |
390 | ||
391 | return error; | |
392 | } | |
393 | ||
b3b94faa DT |
394 | /** |
395 | * inode_go_lock - operation done after an inode lock is locked by a process | |
396 | * @gl: the glock | |
397 | * @flags: | |
398 | * | |
399 | * Returns: errno | |
400 | */ | |
401 | ||
402 | static int inode_go_lock(struct gfs2_holder *gh) | |
403 | { | |
404 | struct gfs2_glock *gl = gh->gh_gl; | |
813e0c46 | 405 | struct gfs2_sbd *sdp = gl->gl_sbd; |
5c676f6d | 406 | struct gfs2_inode *ip = gl->gl_object; |
b3b94faa DT |
407 | int error = 0; |
408 | ||
091806ed | 409 | if (!ip || (gh->gh_flags & GL_SKIP)) |
b3b94faa DT |
410 | return 0; |
411 | ||
bfded27b | 412 | if (test_bit(GIF_INVALID, &ip->i_flags)) { |
b3b94faa DT |
413 | error = gfs2_inode_refresh(ip); |
414 | if (error) | |
415 | return error; | |
b3b94faa DT |
416 | } |
417 | ||
582d2f7a SW |
418 | if (gh->gh_state != LM_ST_DEFERRED) |
419 | inode_dio_wait(&ip->i_inode); | |
420 | ||
383f01fb | 421 | if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) && |
b3b94faa | 422 | (gl->gl_state == LM_ST_EXCLUSIVE) && |
813e0c46 SW |
423 | (gh->gh_state == LM_ST_EXCLUSIVE)) { |
424 | spin_lock(&sdp->sd_trunc_lock); | |
425 | if (list_empty(&ip->i_trunc_list)) | |
426 | list_add(&sdp->sd_trunc_list, &ip->i_trunc_list); | |
427 | spin_unlock(&sdp->sd_trunc_lock); | |
428 | wake_up(&sdp->sd_quota_wait); | |
429 | return 1; | |
430 | } | |
b3b94faa DT |
431 | |
432 | return error; | |
433 | } | |
434 | ||
6802e340 SW |
435 | /** |
436 | * inode_go_dump - print information about an inode | |
437 | * @seq: The iterator | |
438 | * @ip: the inode | |
439 | * | |
440 | * Returns: 0 on success, -ENOBUFS when we run out of space | |
441 | */ | |
442 | ||
443 | static int inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl) | |
444 | { | |
445 | const struct gfs2_inode *ip = gl->gl_object; | |
446 | if (ip == NULL) | |
447 | return 0; | |
a2e0f799 | 448 | gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu\n", |
6802e340 SW |
449 | (unsigned long long)ip->i_no_formal_ino, |
450 | (unsigned long long)ip->i_no_addr, | |
fa75cedc SW |
451 | IF2DT(ip->i_inode.i_mode), ip->i_flags, |
452 | (unsigned int)ip->i_diskflags, | |
a2e0f799 | 453 | (unsigned long long)i_size_read(&ip->i_inode)); |
6802e340 SW |
454 | return 0; |
455 | } | |
456 | ||
b3b94faa | 457 | /** |
3042a2cc | 458 | * trans_go_sync - promote/demote the transaction glock |
b3b94faa DT |
459 | * @gl: the glock |
460 | * @state: the requested state | |
461 | * @flags: | |
462 | * | |
463 | */ | |
464 | ||
3042a2cc | 465 | static void trans_go_sync(struct gfs2_glock *gl) |
b3b94faa DT |
466 | { |
467 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
468 | ||
469 | if (gl->gl_state != LM_ST_UNLOCKED && | |
470 | test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { | |
471 | gfs2_meta_syncfs(sdp); | |
472 | gfs2_log_shutdown(sdp); | |
473 | } | |
b3b94faa DT |
474 | } |
475 | ||
476 | /** | |
477 | * trans_go_xmote_bh - After promoting/demoting the transaction glock | |
478 | * @gl: the glock | |
479 | * | |
480 | */ | |
481 | ||
6802e340 | 482 | static int trans_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh) |
b3b94faa DT |
483 | { |
484 | struct gfs2_sbd *sdp = gl->gl_sbd; | |
feaa7bba | 485 | struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
5c676f6d | 486 | struct gfs2_glock *j_gl = ip->i_gl; |
55167622 | 487 | struct gfs2_log_header_host head; |
b3b94faa DT |
488 | int error; |
489 | ||
6802e340 | 490 | if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { |
1a14d3a6 | 491 | j_gl->gl_ops->go_inval(j_gl, DIO_METADATA); |
b3b94faa DT |
492 | |
493 | error = gfs2_find_jhead(sdp->sd_jdesc, &head); | |
494 | if (error) | |
495 | gfs2_consist(sdp); | |
496 | if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) | |
497 | gfs2_consist(sdp); | |
498 | ||
499 | /* Initialize some head of the log stuff */ | |
500 | if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) { | |
501 | sdp->sd_log_sequence = head.lh_sequence + 1; | |
502 | gfs2_log_pointers_init(sdp, head.lh_blkno); | |
503 | } | |
504 | } | |
6802e340 | 505 | return 0; |
b3b94faa DT |
506 | } |
507 | ||
97cc1025 SW |
508 | /** |
509 | * trans_go_demote_ok | |
510 | * @gl: the glock | |
511 | * | |
512 | * Always returns 0 | |
513 | */ | |
514 | ||
515 | static int trans_go_demote_ok(const struct gfs2_glock *gl) | |
516 | { | |
517 | return 0; | |
518 | } | |
519 | ||
b94a170e BM |
520 | /** |
521 | * iopen_go_callback - schedule the dcache entry for the inode to be deleted | |
522 | * @gl: the glock | |
523 | * | |
524 | * gl_spin lock is held while calling this | |
525 | */ | |
81ffbf65 | 526 | static void iopen_go_callback(struct gfs2_glock *gl, bool remote) |
b94a170e BM |
527 | { |
528 | struct gfs2_inode *ip = (struct gfs2_inode *)gl->gl_object; | |
001e8e8d SW |
529 | struct gfs2_sbd *sdp = gl->gl_sbd; |
530 | ||
81ffbf65 | 531 | if (!remote || (sdp->sd_vfs->s_flags & MS_RDONLY)) |
001e8e8d | 532 | return; |
b94a170e BM |
533 | |
534 | if (gl->gl_demote_state == LM_ST_UNLOCKED && | |
009d8518 | 535 | gl->gl_state == LM_ST_SHARED && ip) { |
e66cf161 | 536 | gl->gl_lockref.count++; |
b94a170e | 537 | if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0) |
e66cf161 | 538 | gl->gl_lockref.count--; |
b94a170e BM |
539 | } |
540 | } | |
541 | ||
8fb4b536 | 542 | const struct gfs2_glock_operations gfs2_meta_glops = { |
ea67eedb | 543 | .go_type = LM_TYPE_META, |
b3b94faa DT |
544 | }; |
545 | ||
8fb4b536 | 546 | const struct gfs2_glock_operations gfs2_inode_glops = { |
06dfc306 | 547 | .go_sync = inode_go_sync, |
b3b94faa DT |
548 | .go_inval = inode_go_inval, |
549 | .go_demote_ok = inode_go_demote_ok, | |
550 | .go_lock = inode_go_lock, | |
6802e340 | 551 | .go_dump = inode_go_dump, |
ea67eedb | 552 | .go_type = LM_TYPE_INODE, |
009d8518 | 553 | .go_flags = GLOF_ASPACE, |
b3b94faa DT |
554 | }; |
555 | ||
8fb4b536 | 556 | const struct gfs2_glock_operations gfs2_rgrp_glops = { |
06dfc306 | 557 | .go_sync = rgrp_go_sync, |
6bac243f | 558 | .go_inval = rgrp_go_inval, |
7c9ca621 BP |
559 | .go_lock = gfs2_rgrp_go_lock, |
560 | .go_unlock = gfs2_rgrp_go_unlock, | |
09010978 | 561 | .go_dump = gfs2_rgrp_dump, |
ea67eedb | 562 | .go_type = LM_TYPE_RGRP, |
70d4ee94 | 563 | .go_flags = GLOF_LVB, |
b3b94faa DT |
564 | }; |
565 | ||
8fb4b536 | 566 | const struct gfs2_glock_operations gfs2_trans_glops = { |
06dfc306 | 567 | .go_sync = trans_go_sync, |
b3b94faa | 568 | .go_xmote_bh = trans_go_xmote_bh, |
97cc1025 | 569 | .go_demote_ok = trans_go_demote_ok, |
ea67eedb | 570 | .go_type = LM_TYPE_NONDISK, |
b3b94faa DT |
571 | }; |
572 | ||
8fb4b536 | 573 | const struct gfs2_glock_operations gfs2_iopen_glops = { |
ea67eedb | 574 | .go_type = LM_TYPE_IOPEN, |
b94a170e | 575 | .go_callback = iopen_go_callback, |
b3b94faa DT |
576 | }; |
577 | ||
8fb4b536 | 578 | const struct gfs2_glock_operations gfs2_flock_glops = { |
ea67eedb | 579 | .go_type = LM_TYPE_FLOCK, |
b3b94faa DT |
580 | }; |
581 | ||
8fb4b536 | 582 | const struct gfs2_glock_operations gfs2_nondisk_glops = { |
ea67eedb | 583 | .go_type = LM_TYPE_NONDISK, |
b3b94faa DT |
584 | }; |
585 | ||
8fb4b536 | 586 | const struct gfs2_glock_operations gfs2_quota_glops = { |
ea67eedb | 587 | .go_type = LM_TYPE_QUOTA, |
dba2d70c | 588 | .go_flags = GLOF_LVB, |
b3b94faa DT |
589 | }; |
590 | ||
8fb4b536 | 591 | const struct gfs2_glock_operations gfs2_journal_glops = { |
ea67eedb | 592 | .go_type = LM_TYPE_JOURNAL, |
b3b94faa DT |
593 | }; |
594 | ||
64d576ba SW |
595 | const struct gfs2_glock_operations *gfs2_glops_list[] = { |
596 | [LM_TYPE_META] = &gfs2_meta_glops, | |
597 | [LM_TYPE_INODE] = &gfs2_inode_glops, | |
598 | [LM_TYPE_RGRP] = &gfs2_rgrp_glops, | |
64d576ba SW |
599 | [LM_TYPE_IOPEN] = &gfs2_iopen_glops, |
600 | [LM_TYPE_FLOCK] = &gfs2_flock_glops, | |
601 | [LM_TYPE_NONDISK] = &gfs2_nondisk_glops, | |
602 | [LM_TYPE_QUOTA] = &gfs2_quota_glops, | |
603 | [LM_TYPE_JOURNAL] = &gfs2_journal_glops, | |
604 | }; | |
605 |