Commit | Line | Data |
---|---|---|
7336d0e6 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
b3b94faa DT |
2 | /* |
3 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
da6dd40d | 4 | * Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
5 | */ |
6 | ||
d77d1b58 JP |
7 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
8 | ||
9e6e0a12 | 9 | #include <linux/bio.h> |
174cd4b1 | 10 | #include <linux/sched/signal.h> |
b3b94faa DT |
11 | #include <linux/slab.h> |
12 | #include <linux/spinlock.h> | |
13 | #include <linux/completion.h> | |
14 | #include <linux/buffer_head.h> | |
9e6e0a12 SW |
15 | #include <linux/statfs.h> |
16 | #include <linux/seq_file.h> | |
17 | #include <linux/mount.h> | |
18 | #include <linux/kthread.h> | |
19 | #include <linux/delay.h> | |
5c676f6d | 20 | #include <linux/gfs2_ondisk.h> |
9e6e0a12 SW |
21 | #include <linux/crc32.h> |
22 | #include <linux/time.h> | |
e402746a | 23 | #include <linux/wait.h> |
a9185b41 | 24 | #include <linux/writeback.h> |
4667a0ec | 25 | #include <linux/backing-dev.h> |
2e60d768 | 26 | #include <linux/kernel.h> |
b3b94faa DT |
27 | |
28 | #include "gfs2.h" | |
5c676f6d | 29 | #include "incore.h" |
b3b94faa DT |
30 | #include "bmap.h" |
31 | #include "dir.h" | |
b3b94faa DT |
32 | #include "glock.h" |
33 | #include "glops.h" | |
34 | #include "inode.h" | |
35 | #include "log.h" | |
36 | #include "meta_io.h" | |
37 | #include "quota.h" | |
38 | #include "recovery.h" | |
39 | #include "rgrp.h" | |
40 | #include "super.h" | |
41 | #include "trans.h" | |
5c676f6d | 42 | #include "util.h" |
9e6e0a12 | 43 | #include "sys.h" |
307cf6e6 | 44 | #include "xattr.h" |
f4686c26 | 45 | #include "lops.h" |
9e6e0a12 | 46 | |
53dbc27e BP |
47 | enum dinode_demise { |
48 | SHOULD_DELETE_DINODE, | |
49 | SHOULD_NOT_DELETE_DINODE, | |
50 | SHOULD_DEFER_EVICTION, | |
51 | }; | |
52 | ||
fefc03bf SW |
53 | /** |
54 | * gfs2_jindex_free - Clear all the journal index information | |
55 | * @sdp: The GFS2 superblock | |
56 | * | |
57 | */ | |
58 | ||
59 | void gfs2_jindex_free(struct gfs2_sbd *sdp) | |
60 | { | |
b50f227b | 61 | struct list_head list; |
fefc03bf | 62 | struct gfs2_jdesc *jd; |
fefc03bf SW |
63 | |
64 | spin_lock(&sdp->sd_jindex_spin); | |
65 | list_add(&list, &sdp->sd_jindex_list); | |
66 | list_del_init(&sdp->sd_jindex_list); | |
67 | sdp->sd_journals = 0; | |
68 | spin_unlock(&sdp->sd_jindex_spin); | |
69 | ||
601ef0d5 | 70 | sdp->sd_jdesc = NULL; |
fefc03bf | 71 | while (!list_empty(&list)) { |
969183bc | 72 | jd = list_first_entry(&list, struct gfs2_jdesc, jd_list); |
b50f227b | 73 | gfs2_free_journal_extents(jd); |
fefc03bf SW |
74 | list_del(&jd->jd_list); |
75 | iput(jd->jd_inode); | |
601ef0d5 | 76 | jd->jd_inode = NULL; |
fefc03bf SW |
77 | kfree(jd); |
78 | } | |
79 | } | |
80 | ||
b3b94faa DT |
81 | static struct gfs2_jdesc *jdesc_find_i(struct list_head *head, unsigned int jid) |
82 | { | |
83 | struct gfs2_jdesc *jd; | |
b3b94faa DT |
84 | |
85 | list_for_each_entry(jd, head, jd_list) { | |
736b2f77 AG |
86 | if (jd->jd_jid == jid) |
87 | return jd; | |
b3b94faa | 88 | } |
736b2f77 | 89 | return NULL; |
b3b94faa DT |
90 | } |
91 | ||
92 | struct gfs2_jdesc *gfs2_jdesc_find(struct gfs2_sbd *sdp, unsigned int jid) | |
93 | { | |
94 | struct gfs2_jdesc *jd; | |
95 | ||
96 | spin_lock(&sdp->sd_jindex_spin); | |
97 | jd = jdesc_find_i(&sdp->sd_jindex_list, jid); | |
98 | spin_unlock(&sdp->sd_jindex_spin); | |
99 | ||
100 | return jd; | |
101 | } | |
102 | ||
b3b94faa DT |
103 | int gfs2_jdesc_check(struct gfs2_jdesc *jd) |
104 | { | |
feaa7bba SW |
105 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
106 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); | |
a2e0f799 | 107 | u64 size = i_size_read(jd->jd_inode); |
b3b94faa | 108 | |
47a9a527 | 109 | if (gfs2_check_internal_file_size(jd->jd_inode, 8 << 20, BIT(30))) |
b3b94faa | 110 | return -EIO; |
b3b94faa | 111 | |
a2e0f799 SW |
112 | jd->jd_blocks = size >> sdp->sd_sb.sb_bsize_shift; |
113 | ||
114 | if (gfs2_write_alloc_required(ip, 0, size)) { | |
b3b94faa | 115 | gfs2_consist_inode(ip); |
461cb419 | 116 | return -EIO; |
b3b94faa DT |
117 | } |
118 | ||
461cb419 | 119 | return 0; |
b3b94faa DT |
120 | } |
121 | ||
b3b94faa DT |
122 | /** |
123 | * gfs2_make_fs_rw - Turn a Read-Only FS into a Read-Write one | |
124 | * @sdp: the filesystem | |
125 | * | |
126 | * Returns: errno | |
127 | */ | |
128 | ||
129 | int gfs2_make_fs_rw(struct gfs2_sbd *sdp) | |
130 | { | |
feaa7bba | 131 | struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); |
5c676f6d | 132 | struct gfs2_glock *j_gl = ip->i_gl; |
55167622 | 133 | struct gfs2_log_header_host head; |
b3b94faa DT |
134 | int error; |
135 | ||
1a14d3a6 | 136 | j_gl->gl_ops->go_inval(j_gl, DIO_METADATA); |
a28dc123 BP |
137 | if (gfs2_withdrawn(sdp)) |
138 | return -EIO; | |
b3b94faa | 139 | |
f4686c26 | 140 | error = gfs2_find_jhead(sdp->sd_jdesc, &head, false); |
601ef0d5 | 141 | if (error || gfs2_withdrawn(sdp)) |
a28dc123 | 142 | return error; |
b3b94faa DT |
143 | |
144 | if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) { | |
145 | gfs2_consist(sdp); | |
a28dc123 | 146 | return -EIO; |
b3b94faa DT |
147 | } |
148 | ||
149 | /* Initialize some head of the log stuff */ | |
150 | sdp->sd_log_sequence = head.lh_sequence + 1; | |
151 | gfs2_log_pointers_init(sdp, head.lh_blkno); | |
152 | ||
b3b94faa | 153 | error = gfs2_quota_init(sdp); |
a28dc123 BP |
154 | if (!error && !gfs2_withdrawn(sdp)) |
155 | set_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); | |
b3b94faa DT |
156 | return error; |
157 | } | |
158 | ||
1946f70a | 159 | void gfs2_statfs_change_in(struct gfs2_statfs_change_host *sc, const void *buf) |
bb8d8a6f SW |
160 | { |
161 | const struct gfs2_statfs_change *str = buf; | |
162 | ||
163 | sc->sc_total = be64_to_cpu(str->sc_total); | |
164 | sc->sc_free = be64_to_cpu(str->sc_free); | |
165 | sc->sc_dinodes = be64_to_cpu(str->sc_dinodes); | |
166 | } | |
167 | ||
73092698 | 168 | void gfs2_statfs_change_out(const struct gfs2_statfs_change_host *sc, void *buf) |
bb8d8a6f SW |
169 | { |
170 | struct gfs2_statfs_change *str = buf; | |
171 | ||
172 | str->sc_total = cpu_to_be64(sc->sc_total); | |
173 | str->sc_free = cpu_to_be64(sc->sc_free); | |
174 | str->sc_dinodes = cpu_to_be64(sc->sc_dinodes); | |
175 | } | |
176 | ||
b3b94faa DT |
177 | int gfs2_statfs_init(struct gfs2_sbd *sdp) |
178 | { | |
feaa7bba | 179 | struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode); |
bd209cc0 | 180 | struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; |
bd209cc0 | 181 | struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; |
70c11ba8 | 182 | struct buffer_head *m_bh; |
b3b94faa DT |
183 | struct gfs2_holder gh; |
184 | int error; | |
185 | ||
186 | error = gfs2_glock_nq_init(m_ip->i_gl, LM_ST_EXCLUSIVE, GL_NOCACHE, | |
187 | &gh); | |
188 | if (error) | |
189 | return error; | |
190 | ||
191 | error = gfs2_meta_inode_buffer(m_ip, &m_bh); | |
192 | if (error) | |
193 | goto out; | |
194 | ||
195 | if (sdp->sd_args.ar_spectator) { | |
196 | spin_lock(&sdp->sd_statfs_spin); | |
197 | gfs2_statfs_change_in(m_sc, m_bh->b_data + | |
198 | sizeof(struct gfs2_dinode)); | |
199 | spin_unlock(&sdp->sd_statfs_spin); | |
200 | } else { | |
b3b94faa DT |
201 | spin_lock(&sdp->sd_statfs_spin); |
202 | gfs2_statfs_change_in(m_sc, m_bh->b_data + | |
203 | sizeof(struct gfs2_dinode)); | |
70c11ba8 | 204 | gfs2_statfs_change_in(l_sc, sdp->sd_sc_bh->b_data + |
b3b94faa DT |
205 | sizeof(struct gfs2_dinode)); |
206 | spin_unlock(&sdp->sd_statfs_spin); | |
207 | ||
b3b94faa DT |
208 | } |
209 | ||
b3b94faa | 210 | brelse(m_bh); |
a91ea69f | 211 | out: |
b3b94faa | 212 | gfs2_glock_dq_uninit(&gh); |
b3b94faa DT |
213 | return 0; |
214 | } | |
215 | ||
cd915493 SW |
216 | void gfs2_statfs_change(struct gfs2_sbd *sdp, s64 total, s64 free, |
217 | s64 dinodes) | |
b3b94faa | 218 | { |
feaa7bba | 219 | struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); |
bd209cc0 | 220 | struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; |
3d3c10f2 | 221 | struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; |
c14f5735 BM |
222 | s64 x, y; |
223 | int need_sync = 0; | |
b3b94faa | 224 | |
70c11ba8 | 225 | gfs2_trans_add_meta(l_ip->i_gl, sdp->sd_sc_bh); |
b3b94faa DT |
226 | |
227 | spin_lock(&sdp->sd_statfs_spin); | |
228 | l_sc->sc_total += total; | |
229 | l_sc->sc_free += free; | |
230 | l_sc->sc_dinodes += dinodes; | |
70c11ba8 BP |
231 | gfs2_statfs_change_out(l_sc, sdp->sd_sc_bh->b_data + |
232 | sizeof(struct gfs2_dinode)); | |
c14f5735 BM |
233 | if (sdp->sd_args.ar_statfs_percent) { |
234 | x = 100 * l_sc->sc_free; | |
235 | y = m_sc->sc_free * sdp->sd_args.ar_statfs_percent; | |
236 | if (x >= y || x <= -y) | |
237 | need_sync = 1; | |
238 | } | |
b3b94faa DT |
239 | spin_unlock(&sdp->sd_statfs_spin); |
240 | ||
c14f5735 | 241 | if (need_sync) |
3d3c10f2 | 242 | gfs2_wake_up_statfs(sdp); |
b3b94faa DT |
243 | } |
244 | ||
70c11ba8 | 245 | void update_statfs(struct gfs2_sbd *sdp, struct buffer_head *m_bh) |
1946f70a BM |
246 | { |
247 | struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode); | |
248 | struct gfs2_inode *l_ip = GFS2_I(sdp->sd_sc_inode); | |
249 | struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; | |
250 | struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; | |
251 | ||
70c11ba8 | 252 | gfs2_trans_add_meta(l_ip->i_gl, sdp->sd_sc_bh); |
901c6c66 | 253 | gfs2_trans_add_meta(m_ip->i_gl, m_bh); |
1946f70a BM |
254 | |
255 | spin_lock(&sdp->sd_statfs_spin); | |
256 | m_sc->sc_total += l_sc->sc_total; | |
257 | m_sc->sc_free += l_sc->sc_free; | |
258 | m_sc->sc_dinodes += l_sc->sc_dinodes; | |
259 | memset(l_sc, 0, sizeof(struct gfs2_statfs_change)); | |
70c11ba8 | 260 | memset(sdp->sd_sc_bh->b_data + sizeof(struct gfs2_dinode), |
1946f70a | 261 | 0, sizeof(struct gfs2_statfs_change)); |
1946f70a | 262 | gfs2_statfs_change_out(m_sc, m_bh->b_data + sizeof(struct gfs2_dinode)); |
901c6c66 | 263 | spin_unlock(&sdp->sd_statfs_spin); |
1946f70a BM |
264 | } |
265 | ||
8c42d637 | 266 | int gfs2_statfs_sync(struct super_block *sb, int type) |
b3b94faa | 267 | { |
8c42d637 | 268 | struct gfs2_sbd *sdp = sb->s_fs_info; |
feaa7bba | 269 | struct gfs2_inode *m_ip = GFS2_I(sdp->sd_statfs_inode); |
bd209cc0 AV |
270 | struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; |
271 | struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; | |
b3b94faa | 272 | struct gfs2_holder gh; |
70c11ba8 | 273 | struct buffer_head *m_bh; |
b3b94faa DT |
274 | int error; |
275 | ||
276 | error = gfs2_glock_nq_init(m_ip->i_gl, LM_ST_EXCLUSIVE, GL_NOCACHE, | |
277 | &gh); | |
278 | if (error) | |
2e60d768 | 279 | goto out; |
b3b94faa DT |
280 | |
281 | error = gfs2_meta_inode_buffer(m_ip, &m_bh); | |
282 | if (error) | |
2e60d768 | 283 | goto out_unlock; |
b3b94faa DT |
284 | |
285 | spin_lock(&sdp->sd_statfs_spin); | |
286 | gfs2_statfs_change_in(m_sc, m_bh->b_data + | |
907b9bce | 287 | sizeof(struct gfs2_dinode)); |
b3b94faa DT |
288 | if (!l_sc->sc_total && !l_sc->sc_free && !l_sc->sc_dinodes) { |
289 | spin_unlock(&sdp->sd_statfs_spin); | |
290 | goto out_bh; | |
291 | } | |
292 | spin_unlock(&sdp->sd_statfs_spin); | |
293 | ||
b3b94faa DT |
294 | error = gfs2_trans_begin(sdp, 2 * RES_DINODE, 0); |
295 | if (error) | |
70c11ba8 | 296 | goto out_bh; |
b3b94faa | 297 | |
70c11ba8 | 298 | update_statfs(sdp, m_bh); |
3d3c10f2 | 299 | sdp->sd_statfs_force_sync = 0; |
b3b94faa DT |
300 | |
301 | gfs2_trans_end(sdp); | |
302 | ||
a91ea69f | 303 | out_bh: |
b3b94faa | 304 | brelse(m_bh); |
2e60d768 | 305 | out_unlock: |
b3b94faa | 306 | gfs2_glock_dq_uninit(&gh); |
2e60d768 | 307 | out: |
b3b94faa DT |
308 | return error; |
309 | } | |
310 | ||
b3b94faa DT |
311 | struct lfcc { |
312 | struct list_head list; | |
313 | struct gfs2_holder gh; | |
314 | }; | |
315 | ||
316 | /** | |
317 | * gfs2_lock_fs_check_clean - Stop all writes to the FS and check that all | |
318 | * journals are clean | |
319 | * @sdp: the file system | |
b3b94faa DT |
320 | * |
321 | * Returns: errno | |
322 | */ | |
323 | ||
52b1cdcb | 324 | static int gfs2_lock_fs_check_clean(struct gfs2_sbd *sdp) |
b3b94faa | 325 | { |
5c676f6d | 326 | struct gfs2_inode *ip; |
b3b94faa DT |
327 | struct gfs2_jdesc *jd; |
328 | struct lfcc *lfcc; | |
329 | LIST_HEAD(list); | |
55167622 | 330 | struct gfs2_log_header_host lh; |
b3b94faa DT |
331 | int error; |
332 | ||
b3b94faa DT |
333 | list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { |
334 | lfcc = kmalloc(sizeof(struct lfcc), GFP_KERNEL); | |
335 | if (!lfcc) { | |
336 | error = -ENOMEM; | |
337 | goto out; | |
338 | } | |
feaa7bba SW |
339 | ip = GFS2_I(jd->jd_inode); |
340 | error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &lfcc->gh); | |
b3b94faa DT |
341 | if (error) { |
342 | kfree(lfcc); | |
343 | goto out; | |
344 | } | |
345 | list_add(&lfcc->list, &list); | |
346 | } | |
347 | ||
24972557 | 348 | error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_EXCLUSIVE, |
ebdc416c AG |
349 | LM_FLAG_NOEXP | GL_NOPID, |
350 | &sdp->sd_freeze_gh); | |
52b1cdcb BP |
351 | if (error) |
352 | goto out; | |
b3b94faa DT |
353 | |
354 | list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { | |
355 | error = gfs2_jdesc_check(jd); | |
356 | if (error) | |
357 | break; | |
f4686c26 | 358 | error = gfs2_find_jhead(jd, &lh, false); |
b3b94faa DT |
359 | if (error) |
360 | break; | |
361 | if (!(lh.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) { | |
362 | error = -EBUSY; | |
363 | break; | |
364 | } | |
365 | } | |
366 | ||
367 | if (error) | |
c77b52c0 | 368 | gfs2_freeze_unlock(&sdp->sd_freeze_gh); |
b3b94faa | 369 | |
a91ea69f | 370 | out: |
b3b94faa | 371 | while (!list_empty(&list)) { |
969183bc | 372 | lfcc = list_first_entry(&list, struct lfcc, list); |
b3b94faa DT |
373 | list_del(&lfcc->list); |
374 | gfs2_glock_dq_uninit(&lfcc->gh); | |
375 | kfree(lfcc); | |
376 | } | |
b3b94faa DT |
377 | return error; |
378 | } | |
379 | ||
9eed04cd SW |
380 | void gfs2_dinode_out(const struct gfs2_inode *ip, void *buf) |
381 | { | |
7db35444 | 382 | const struct inode *inode = &ip->i_inode; |
9eed04cd SW |
383 | struct gfs2_dinode *str = buf; |
384 | ||
385 | str->di_header.mh_magic = cpu_to_be32(GFS2_MAGIC); | |
386 | str->di_header.mh_type = cpu_to_be32(GFS2_METATYPE_DI); | |
387 | str->di_header.mh_format = cpu_to_be32(GFS2_FORMAT_DI); | |
388 | str->di_num.no_addr = cpu_to_be64(ip->i_no_addr); | |
389 | str->di_num.no_formal_ino = cpu_to_be64(ip->i_no_formal_ino); | |
7db35444 AG |
390 | str->di_mode = cpu_to_be32(inode->i_mode); |
391 | str->di_uid = cpu_to_be32(i_uid_read(inode)); | |
392 | str->di_gid = cpu_to_be32(i_gid_read(inode)); | |
393 | str->di_nlink = cpu_to_be32(inode->i_nlink); | |
394 | str->di_size = cpu_to_be64(i_size_read(inode)); | |
395 | str->di_blocks = cpu_to_be64(gfs2_get_inode_blocks(inode)); | |
396 | str->di_atime = cpu_to_be64(inode->i_atime.tv_sec); | |
397 | str->di_mtime = cpu_to_be64(inode->i_mtime.tv_sec); | |
398 | str->di_ctime = cpu_to_be64(inode->i_ctime.tv_sec); | |
9eed04cd SW |
399 | |
400 | str->di_goal_meta = cpu_to_be64(ip->i_goal); | |
401 | str->di_goal_data = cpu_to_be64(ip->i_goal); | |
402 | str->di_generation = cpu_to_be64(ip->i_generation); | |
403 | ||
404 | str->di_flags = cpu_to_be32(ip->i_diskflags); | |
405 | str->di_height = cpu_to_be16(ip->i_height); | |
7db35444 | 406 | str->di_payload_format = cpu_to_be32(S_ISDIR(inode->i_mode) && |
9eed04cd SW |
407 | !(ip->i_diskflags & GFS2_DIF_EXHASH) ? |
408 | GFS2_FORMAT_DE : 0); | |
409 | str->di_depth = cpu_to_be16(ip->i_depth); | |
410 | str->di_entries = cpu_to_be32(ip->i_entries); | |
411 | ||
412 | str->di_eattr = cpu_to_be64(ip->i_eattr); | |
7db35444 AG |
413 | str->di_atime_nsec = cpu_to_be32(inode->i_atime.tv_nsec); |
414 | str->di_mtime_nsec = cpu_to_be32(inode->i_mtime.tv_nsec); | |
415 | str->di_ctime_nsec = cpu_to_be32(inode->i_ctime.tv_nsec); | |
9eed04cd | 416 | } |
9e6e0a12 SW |
417 | |
418 | /** | |
419 | * gfs2_write_inode - Make sure the inode is stable on the disk | |
420 | * @inode: The inode | |
1027efaa | 421 | * @wbc: The writeback control structure |
9e6e0a12 SW |
422 | * |
423 | * Returns: errno | |
424 | */ | |
425 | ||
a9185b41 | 426 | static int gfs2_write_inode(struct inode *inode, struct writeback_control *wbc) |
9e6e0a12 SW |
427 | { |
428 | struct gfs2_inode *ip = GFS2_I(inode); | |
429 | struct gfs2_sbd *sdp = GFS2_SB(inode); | |
1027efaa | 430 | struct address_space *metamapping = gfs2_glock2aspace(ip->i_gl); |
de1414a6 | 431 | struct backing_dev_info *bdi = inode_to_bdi(metamapping->host); |
ab9bbda0 | 432 | int ret = 0; |
adbc3ddf | 433 | bool flush_all = (wbc->sync_mode == WB_SYNC_ALL || gfs2_is_jdata(ip)); |
ab9bbda0 | 434 | |
adbc3ddf | 435 | if (flush_all) |
c1696fb8 | 436 | gfs2_log_flush(GFS2_SB(inode), ip->i_gl, |
805c0907 BP |
437 | GFS2_LOG_HEAD_FLUSH_NORMAL | |
438 | GFS2_LFC_WRITE_INODE); | |
a88a341a | 439 | if (bdi->wb.dirty_exceeded) |
4667a0ec | 440 | gfs2_ail1_flush(sdp, wbc); |
1d4ec642 SW |
441 | else |
442 | filemap_fdatawrite(metamapping); | |
adbc3ddf | 443 | if (flush_all) |
1027efaa SW |
444 | ret = filemap_fdatawait(metamapping); |
445 | if (ret) | |
446 | mark_inode_dirty_sync(inode); | |
957a7acd AD |
447 | else { |
448 | spin_lock(&inode->i_lock); | |
449 | if (!(inode->i_flags & I_DIRTY)) | |
450 | gfs2_ordered_del_inode(ip); | |
451 | spin_unlock(&inode->i_lock); | |
452 | } | |
9e6e0a12 SW |
453 | return ret; |
454 | } | |
455 | ||
ab9bbda0 SW |
456 | /** |
457 | * gfs2_dirty_inode - check for atime updates | |
458 | * @inode: The inode in question | |
459 | * @flags: The type of dirty | |
460 | * | |
461 | * Unfortunately it can be called under any combination of inode | |
462 | * glock and transaction lock, so we have to check carefully. | |
463 | * | |
464 | * At the moment this deals only with atime - it should be possible | |
465 | * to expand that role in future, once a review of the locking has | |
466 | * been carried out. | |
467 | */ | |
468 | ||
469 | static void gfs2_dirty_inode(struct inode *inode, int flags) | |
470 | { | |
471 | struct gfs2_inode *ip = GFS2_I(inode); | |
472 | struct gfs2_sbd *sdp = GFS2_SB(inode); | |
473 | struct buffer_head *bh; | |
474 | struct gfs2_holder gh; | |
475 | int need_unlock = 0; | |
476 | int need_endtrans = 0; | |
477 | int ret; | |
478 | ||
38552ff6 AG |
479 | if (unlikely(!ip->i_gl)) { |
480 | /* This can only happen during incomplete inode creation. */ | |
481 | BUG_ON(!test_bit(GIF_ALLOC_FAILED, &ip->i_flags)); | |
482 | return; | |
483 | } | |
484 | ||
eb43e660 | 485 | if (unlikely(gfs2_withdrawn(sdp))) |
0d1c7ae9 | 486 | return; |
ab9bbda0 SW |
487 | if (!gfs2_glock_is_locked_by_me(ip->i_gl)) { |
488 | ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh); | |
489 | if (ret) { | |
490 | fs_err(sdp, "dirty_inode: glock %d\n", ret); | |
e28c02b9 | 491 | gfs2_dump_glock(NULL, ip->i_gl, true); |
ab9bbda0 SW |
492 | return; |
493 | } | |
494 | need_unlock = 1; | |
3d162688 BM |
495 | } else if (WARN_ON_ONCE(ip->i_gl->gl_state != LM_ST_EXCLUSIVE)) |
496 | return; | |
ab9bbda0 SW |
497 | |
498 | if (current->journal_info == NULL) { | |
499 | ret = gfs2_trans_begin(sdp, RES_DINODE, 0); | |
500 | if (ret) { | |
501 | fs_err(sdp, "dirty_inode: gfs2_trans_begin %d\n", ret); | |
502 | goto out; | |
503 | } | |
504 | need_endtrans = 1; | |
505 | } | |
506 | ||
507 | ret = gfs2_meta_inode_buffer(ip, &bh); | |
508 | if (ret == 0) { | |
350a9b0a | 509 | gfs2_trans_add_meta(ip->i_gl, bh); |
ab9bbda0 SW |
510 | gfs2_dinode_out(ip, bh->b_data); |
511 | brelse(bh); | |
512 | } | |
513 | ||
514 | if (need_endtrans) | |
515 | gfs2_trans_end(sdp); | |
516 | out: | |
517 | if (need_unlock) | |
518 | gfs2_glock_dq_uninit(&gh); | |
519 | } | |
520 | ||
9e6e0a12 SW |
521 | /** |
522 | * gfs2_make_fs_ro - Turn a Read-Write FS into a Read-Only one | |
523 | * @sdp: the filesystem | |
524 | * | |
525 | * Returns: errno | |
526 | */ | |
527 | ||
eb602521 | 528 | void gfs2_make_fs_ro(struct gfs2_sbd *sdp) |
9e6e0a12 | 529 | { |
601ef0d5 BP |
530 | int log_write_allowed = test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); |
531 | ||
6b388abc AG |
532 | if (!test_bit(SDF_DEACTIVATING, &sdp->sd_flags)) |
533 | gfs2_flush_delete_work(sdp); | |
534 | ||
601ef0d5 BP |
535 | if (!log_write_allowed && current == sdp->sd_quotad_process) |
536 | fs_warn(sdp, "The quotad daemon is withdrawing.\n"); | |
537 | else if (sdp->sd_quotad_process) | |
5b3a9f34 BP |
538 | kthread_stop(sdp->sd_quotad_process); |
539 | sdp->sd_quotad_process = NULL; | |
601ef0d5 BP |
540 | |
541 | if (!log_write_allowed && current == sdp->sd_logd_process) | |
542 | fs_warn(sdp, "The logd daemon is withdrawing.\n"); | |
543 | else if (sdp->sd_logd_process) | |
5b3a9f34 BP |
544 | kthread_stop(sdp->sd_logd_process); |
545 | sdp->sd_logd_process = NULL; | |
8ad151c2 | 546 | |
601ef0d5 BP |
547 | if (log_write_allowed) { |
548 | gfs2_quota_sync(sdp->sd_vfs, 0); | |
549 | gfs2_statfs_sync(sdp->sd_vfs, 0); | |
9e6e0a12 | 550 | |
601ef0d5 BP |
551 | gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_SHUTDOWN | |
552 | GFS2_LFC_MAKE_FS_RO); | |
f3708fb5 AG |
553 | wait_event_timeout(sdp->sd_log_waitq, |
554 | gfs2_log_is_empty(sdp), | |
555 | HZ * 5); | |
556 | gfs2_assert_warn(sdp, gfs2_log_is_empty(sdp)); | |
601ef0d5 | 557 | } else { |
f3708fb5 AG |
558 | wait_event_timeout(sdp->sd_log_waitq, |
559 | gfs2_log_is_empty(sdp), | |
601ef0d5 BP |
560 | HZ * 5); |
561 | } | |
9e6e0a12 SW |
562 | gfs2_quota_cleanup(sdp); |
563 | ||
601ef0d5 BP |
564 | if (!log_write_allowed) |
565 | sdp->sd_vfs->s_flags |= SB_RDONLY; | |
9e6e0a12 SW |
566 | } |
567 | ||
9e6e0a12 SW |
568 | /** |
569 | * gfs2_put_super - Unmount the filesystem | |
570 | * @sb: The VFS superblock | |
571 | * | |
572 | */ | |
573 | ||
574 | static void gfs2_put_super(struct super_block *sb) | |
575 | { | |
576 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
9e6e0a12 SW |
577 | struct gfs2_jdesc *jd; |
578 | ||
9e6e0a12 SW |
579 | /* No more recovery requests */ |
580 | set_bit(SDF_NORECOVERY, &sdp->sd_flags); | |
581 | smp_mb(); | |
582 | ||
583 | /* Wait on outstanding recovery */ | |
584 | restart: | |
585 | spin_lock(&sdp->sd_jindex_spin); | |
586 | list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { | |
587 | if (!test_bit(JDF_RECOVERY, &jd->jd_flags)) | |
588 | continue; | |
589 | spin_unlock(&sdp->sd_jindex_spin); | |
590 | wait_on_bit(&jd->jd_flags, JDF_RECOVERY, | |
74316201 | 591 | TASK_UNINTERRUPTIBLE); |
9e6e0a12 SW |
592 | goto restart; |
593 | } | |
594 | spin_unlock(&sdp->sd_jindex_spin); | |
595 | ||
bc98a42c | 596 | if (!sb_rdonly(sb)) { |
eb602521 | 597 | gfs2_make_fs_ro(sdp); |
9e6e0a12 | 598 | } |
5a61ae14 AG |
599 | WARN_ON(gfs2_withdrawing(sdp)); |
600 | ||
9e6e0a12 SW |
601 | /* At this point, we're through modifying the disk */ |
602 | ||
603 | /* Release stuff */ | |
604 | ||
605 | iput(sdp->sd_jindex); | |
9e6e0a12 SW |
606 | iput(sdp->sd_statfs_inode); |
607 | iput(sdp->sd_rindex); | |
608 | iput(sdp->sd_quota_inode); | |
609 | ||
610 | gfs2_glock_put(sdp->sd_rename_gl); | |
24972557 | 611 | gfs2_glock_put(sdp->sd_freeze_gl); |
9e6e0a12 SW |
612 | |
613 | if (!sdp->sd_args.ar_spectator) { | |
601ef0d5 BP |
614 | if (gfs2_holder_initialized(&sdp->sd_journal_gh)) |
615 | gfs2_glock_dq_uninit(&sdp->sd_journal_gh); | |
616 | if (gfs2_holder_initialized(&sdp->sd_jinode_gh)) | |
617 | gfs2_glock_dq_uninit(&sdp->sd_jinode_gh); | |
70c11ba8 | 618 | brelse(sdp->sd_sc_bh); |
9e6e0a12 SW |
619 | gfs2_glock_dq_uninit(&sdp->sd_sc_gh); |
620 | gfs2_glock_dq_uninit(&sdp->sd_qc_gh); | |
97fd734b | 621 | free_local_statfs_inodes(sdp); |
9e6e0a12 SW |
622 | iput(sdp->sd_qc_inode); |
623 | } | |
624 | ||
625 | gfs2_glock_dq_uninit(&sdp->sd_live_gh); | |
626 | gfs2_clear_rgrpd(sdp); | |
627 | gfs2_jindex_free(sdp); | |
628 | /* Take apart glock structures and buffer lists */ | |
629 | gfs2_gl_hash_clear(sdp); | |
a9dd945c | 630 | truncate_inode_pages_final(&sdp->sd_aspace); |
b2fb7dab | 631 | gfs2_delete_debugfs_file(sdp); |
9e6e0a12 SW |
632 | /* Unmount the locking protocol */ |
633 | gfs2_lm_unmount(sdp); | |
634 | ||
635 | /* At this point, we're through participating in the lockspace */ | |
636 | gfs2_sys_fs_del(sdp); | |
c2a04b02 | 637 | free_sbd(sdp); |
9e6e0a12 SW |
638 | } |
639 | ||
9e6e0a12 SW |
640 | /** |
641 | * gfs2_sync_fs - sync the filesystem | |
642 | * @sb: the superblock | |
c551f66c | 643 | * @wait: true to wait for completion |
9e6e0a12 SW |
644 | * |
645 | * Flushes the log to disk. | |
646 | */ | |
647 | ||
648 | static int gfs2_sync_fs(struct super_block *sb, int wait) | |
649 | { | |
1027efaa | 650 | struct gfs2_sbd *sdp = sb->s_fs_info; |
a1177825 JK |
651 | |
652 | gfs2_quota_sync(sb, -1); | |
942b0cdd | 653 | if (wait) |
805c0907 BP |
654 | gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_NORMAL | |
655 | GFS2_LFC_SYNC_FS); | |
942b0cdd | 656 | return sdp->sd_log_error; |
9e6e0a12 SW |
657 | } |
658 | ||
2e60d768 BM |
659 | void gfs2_freeze_func(struct work_struct *work) |
660 | { | |
661 | int error; | |
662 | struct gfs2_holder freeze_gh; | |
663 | struct gfs2_sbd *sdp = container_of(work, struct gfs2_sbd, sd_freeze_work); | |
664 | struct super_block *sb = sdp->sd_vfs; | |
665 | ||
666 | atomic_inc(&sb->s_active); | |
c77b52c0 | 667 | error = gfs2_freeze_lock(sdp, &freeze_gh, 0); |
2e60d768 | 668 | if (error) { |
2e60d768 | 669 | gfs2_assert_withdraw(sdp, 0); |
8f918219 | 670 | } else { |
2e60d768 BM |
671 | atomic_set(&sdp->sd_freeze_state, SFS_UNFROZEN); |
672 | error = thaw_super(sb); | |
673 | if (error) { | |
f29e62ee BP |
674 | fs_info(sdp, "GFS2: couldn't thaw filesystem: %d\n", |
675 | error); | |
2e60d768 BM |
676 | gfs2_assert_withdraw(sdp, 0); |
677 | } | |
c77b52c0 | 678 | gfs2_freeze_unlock(&freeze_gh); |
2e60d768 BM |
679 | } |
680 | deactivate_super(sb); | |
8f918219 AD |
681 | clear_bit_unlock(SDF_FS_FROZEN, &sdp->sd_flags); |
682 | wake_up_bit(&sdp->sd_flags, SDF_FS_FROZEN); | |
2e60d768 BM |
683 | return; |
684 | } | |
685 | ||
9e6e0a12 SW |
686 | /** |
687 | * gfs2_freeze - prevent further writes to the filesystem | |
688 | * @sb: the VFS structure for the filesystem | |
689 | * | |
690 | */ | |
691 | ||
692 | static int gfs2_freeze(struct super_block *sb) | |
693 | { | |
694 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
ff132c5f | 695 | int error; |
9e6e0a12 | 696 | |
2e60d768 | 697 | mutex_lock(&sdp->sd_freeze_mutex); |
ff132c5f BP |
698 | if (atomic_read(&sdp->sd_freeze_state) != SFS_UNFROZEN) { |
699 | error = -EBUSY; | |
2e60d768 | 700 | goto out; |
ff132c5f | 701 | } |
2e60d768 | 702 | |
9e6e0a12 | 703 | for (;;) { |
60528afa BP |
704 | if (gfs2_withdrawn(sdp)) { |
705 | error = -EINVAL; | |
706 | goto out; | |
707 | } | |
708 | ||
52b1cdcb | 709 | error = gfs2_lock_fs_check_clean(sdp); |
9e6e0a12 SW |
710 | if (!error) |
711 | break; | |
712 | ||
55317f5b | 713 | if (error == -EBUSY) |
9e6e0a12 | 714 | fs_err(sdp, "waiting for recovery before freeze\n"); |
52b1cdcb BP |
715 | else if (error == -EIO) { |
716 | fs_err(sdp, "Fatal IO error: cannot freeze gfs2 due " | |
717 | "to recovery error.\n"); | |
718 | goto out; | |
719 | } else { | |
9e6e0a12 | 720 | fs_err(sdp, "error freezing FS: %d\n", error); |
52b1cdcb | 721 | } |
9e6e0a12 SW |
722 | fs_err(sdp, "retrying...\n"); |
723 | msleep(1000); | |
724 | } | |
8f918219 | 725 | set_bit(SDF_FS_FROZEN, &sdp->sd_flags); |
2e60d768 BM |
726 | out: |
727 | mutex_unlock(&sdp->sd_freeze_mutex); | |
728 | return error; | |
9e6e0a12 SW |
729 | } |
730 | ||
731 | /** | |
732 | * gfs2_unfreeze - reallow writes to the filesystem | |
733 | * @sb: the VFS structure for the filesystem | |
734 | * | |
735 | */ | |
736 | ||
737 | static int gfs2_unfreeze(struct super_block *sb) | |
738 | { | |
d564053f SW |
739 | struct gfs2_sbd *sdp = sb->s_fs_info; |
740 | ||
2e60d768 | 741 | mutex_lock(&sdp->sd_freeze_mutex); |
ff132c5f | 742 | if (atomic_read(&sdp->sd_freeze_state) != SFS_FROZEN || |
6df9f9a2 | 743 | !gfs2_holder_initialized(&sdp->sd_freeze_gh)) { |
2e60d768 | 744 | mutex_unlock(&sdp->sd_freeze_mutex); |
ff132c5f | 745 | return -EINVAL; |
2e60d768 BM |
746 | } |
747 | ||
c77b52c0 | 748 | gfs2_freeze_unlock(&sdp->sd_freeze_gh); |
2e60d768 | 749 | mutex_unlock(&sdp->sd_freeze_mutex); |
8f918219 | 750 | return wait_on_bit(&sdp->sd_flags, SDF_FS_FROZEN, TASK_INTERRUPTIBLE); |
9e6e0a12 SW |
751 | } |
752 | ||
753 | /** | |
c551f66c | 754 | * statfs_slow_fill - fill in the sg for a given RG |
9e6e0a12 SW |
755 | * @rgd: the RG |
756 | * @sc: the sc structure | |
757 | * | |
758 | * Returns: 0 on success, -ESTALE if the LVB is invalid | |
759 | */ | |
760 | ||
761 | static int statfs_slow_fill(struct gfs2_rgrpd *rgd, | |
762 | struct gfs2_statfs_change_host *sc) | |
763 | { | |
764 | gfs2_rgrp_verify(rgd); | |
765 | sc->sc_total += rgd->rd_data; | |
766 | sc->sc_free += rgd->rd_free; | |
767 | sc->sc_dinodes += rgd->rd_dinodes; | |
768 | return 0; | |
769 | } | |
770 | ||
771 | /** | |
772 | * gfs2_statfs_slow - Stat a filesystem using asynchronous locking | |
773 | * @sdp: the filesystem | |
774 | * @sc: the sc info that will be returned | |
775 | * | |
776 | * Any error (other than a signal) will cause this routine to fall back | |
777 | * to the synchronous version. | |
778 | * | |
779 | * FIXME: This really shouldn't busy wait like this. | |
780 | * | |
781 | * Returns: errno | |
782 | */ | |
783 | ||
784 | static int gfs2_statfs_slow(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc) | |
785 | { | |
9e6e0a12 SW |
786 | struct gfs2_rgrpd *rgd_next; |
787 | struct gfs2_holder *gha, *gh; | |
788 | unsigned int slots = 64; | |
789 | unsigned int x; | |
790 | int done; | |
791 | int error = 0, err; | |
792 | ||
793 | memset(sc, 0, sizeof(struct gfs2_statfs_change_host)); | |
6da2ec56 | 794 | gha = kmalloc_array(slots, sizeof(struct gfs2_holder), GFP_KERNEL); |
9e6e0a12 SW |
795 | if (!gha) |
796 | return -ENOMEM; | |
6df9f9a2 AG |
797 | for (x = 0; x < slots; x++) |
798 | gfs2_holder_mark_uninitialized(gha + x); | |
9e6e0a12 | 799 | |
9e6e0a12 SW |
800 | rgd_next = gfs2_rgrpd_get_first(sdp); |
801 | ||
802 | for (;;) { | |
803 | done = 1; | |
804 | ||
805 | for (x = 0; x < slots; x++) { | |
806 | gh = gha + x; | |
807 | ||
6df9f9a2 | 808 | if (gfs2_holder_initialized(gh) && gfs2_glock_poll(gh)) { |
9e6e0a12 SW |
809 | err = gfs2_glock_wait(gh); |
810 | if (err) { | |
811 | gfs2_holder_uninit(gh); | |
812 | error = err; | |
813 | } else { | |
6f6597ba AG |
814 | if (!error) { |
815 | struct gfs2_rgrpd *rgd = | |
816 | gfs2_glock2rgrp(gh->gh_gl); | |
817 | ||
818 | error = statfs_slow_fill(rgd, sc); | |
819 | } | |
9e6e0a12 SW |
820 | gfs2_glock_dq_uninit(gh); |
821 | } | |
822 | } | |
823 | ||
6df9f9a2 | 824 | if (gfs2_holder_initialized(gh)) |
9e6e0a12 SW |
825 | done = 0; |
826 | else if (rgd_next && !error) { | |
827 | error = gfs2_glock_nq_init(rgd_next->rd_gl, | |
828 | LM_ST_SHARED, | |
829 | GL_ASYNC, | |
830 | gh); | |
831 | rgd_next = gfs2_rgrpd_get_next(rgd_next); | |
832 | done = 0; | |
833 | } | |
834 | ||
835 | if (signal_pending(current)) | |
836 | error = -ERESTARTSYS; | |
837 | } | |
838 | ||
839 | if (done) | |
840 | break; | |
841 | ||
842 | yield(); | |
843 | } | |
844 | ||
9e6e0a12 SW |
845 | kfree(gha); |
846 | return error; | |
847 | } | |
848 | ||
849 | /** | |
850 | * gfs2_statfs_i - Do a statfs | |
851 | * @sdp: the filesystem | |
c551f66c | 852 | * @sc: the sc structure |
9e6e0a12 SW |
853 | * |
854 | * Returns: errno | |
855 | */ | |
856 | ||
857 | static int gfs2_statfs_i(struct gfs2_sbd *sdp, struct gfs2_statfs_change_host *sc) | |
858 | { | |
859 | struct gfs2_statfs_change_host *m_sc = &sdp->sd_statfs_master; | |
860 | struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local; | |
861 | ||
862 | spin_lock(&sdp->sd_statfs_spin); | |
863 | ||
864 | *sc = *m_sc; | |
865 | sc->sc_total += l_sc->sc_total; | |
866 | sc->sc_free += l_sc->sc_free; | |
867 | sc->sc_dinodes += l_sc->sc_dinodes; | |
868 | ||
869 | spin_unlock(&sdp->sd_statfs_spin); | |
870 | ||
871 | if (sc->sc_free < 0) | |
872 | sc->sc_free = 0; | |
873 | if (sc->sc_free > sc->sc_total) | |
874 | sc->sc_free = sc->sc_total; | |
875 | if (sc->sc_dinodes < 0) | |
876 | sc->sc_dinodes = 0; | |
877 | ||
878 | return 0; | |
879 | } | |
880 | ||
881 | /** | |
882 | * gfs2_statfs - Gather and return stats about the filesystem | |
c551f66c LJ |
883 | * @dentry: The name of the link |
884 | * @buf: The buffer | |
9e6e0a12 SW |
885 | * |
886 | * Returns: 0 on success or error code | |
887 | */ | |
888 | ||
889 | static int gfs2_statfs(struct dentry *dentry, struct kstatfs *buf) | |
890 | { | |
fc64005c | 891 | struct super_block *sb = dentry->d_sb; |
9e6e0a12 SW |
892 | struct gfs2_sbd *sdp = sb->s_fs_info; |
893 | struct gfs2_statfs_change_host sc; | |
894 | int error; | |
895 | ||
8339ee54 SW |
896 | error = gfs2_rindex_update(sdp); |
897 | if (error) | |
898 | return error; | |
899 | ||
9e6e0a12 SW |
900 | if (gfs2_tune_get(sdp, gt_statfs_slow)) |
901 | error = gfs2_statfs_slow(sdp, &sc); | |
902 | else | |
903 | error = gfs2_statfs_i(sdp, &sc); | |
904 | ||
905 | if (error) | |
906 | return error; | |
907 | ||
908 | buf->f_type = GFS2_MAGIC; | |
909 | buf->f_bsize = sdp->sd_sb.sb_bsize; | |
910 | buf->f_blocks = sc.sc_total; | |
911 | buf->f_bfree = sc.sc_free; | |
912 | buf->f_bavail = sc.sc_free; | |
913 | buf->f_files = sc.sc_dinodes + sc.sc_free; | |
914 | buf->f_ffree = sc.sc_free; | |
915 | buf->f_namelen = GFS2_FNAMESIZE; | |
916 | ||
917 | return 0; | |
918 | } | |
919 | ||
9e6e0a12 SW |
920 | /** |
921 | * gfs2_drop_inode - Drop an inode (test for remote unlink) | |
922 | * @inode: The inode to drop | |
923 | * | |
61b91cfd | 924 | * If we've received a callback on an iopen lock then it's because a |
9e6e0a12 SW |
925 | * remote node tried to deallocate the inode but failed due to this node |
926 | * still having the inode open. Here we mark the link count zero | |
927 | * since we know that it must have reached zero if the GLF_DEMOTE flag | |
928 | * is set on the iopen glock. If we didn't do a disk read since the | |
929 | * remote node removed the final link then we might otherwise miss | |
930 | * this event. This check ensures that this node will deallocate the | |
931 | * inode's blocks, or alternatively pass the baton on to another | |
932 | * node for later deallocation. | |
933 | */ | |
934 | ||
45321ac5 | 935 | static int gfs2_drop_inode(struct inode *inode) |
9e6e0a12 SW |
936 | { |
937 | struct gfs2_inode *ip = GFS2_I(inode); | |
b88beb9a | 938 | struct gfs2_sbd *sdp = GFS2_SB(inode); |
9e6e0a12 | 939 | |
38552ff6 | 940 | if (inode->i_nlink && |
6df9f9a2 | 941 | gfs2_holder_initialized(&ip->i_iopen_gh)) { |
9e6e0a12 | 942 | struct gfs2_glock *gl = ip->i_iopen_gh.gh_gl; |
6df9f9a2 | 943 | if (test_bit(GLF_DEMOTE, &gl->gl_flags)) |
9e6e0a12 SW |
944 | clear_nlink(inode); |
945 | } | |
6a1c8f6d AG |
946 | |
947 | /* | |
948 | * When under memory pressure when an inode's link count has dropped to | |
949 | * zero, defer deleting the inode to the delete workqueue. This avoids | |
950 | * calling into DLM under memory pressure, which can deadlock. | |
951 | */ | |
952 | if (!inode->i_nlink && | |
953 | unlikely(current->flags & PF_MEMALLOC) && | |
954 | gfs2_holder_initialized(&ip->i_iopen_gh)) { | |
955 | struct gfs2_glock *gl = ip->i_iopen_gh.gh_gl; | |
956 | ||
957 | gfs2_glock_hold(gl); | |
f0e56edc | 958 | if (!gfs2_queue_try_to_evict(gl)) |
6a1c8f6d | 959 | gfs2_glock_queue_put(gl); |
ba3ca2bc | 960 | return 0; |
6a1c8f6d AG |
961 | } |
962 | ||
b88beb9a AG |
963 | /* |
964 | * No longer cache inodes when trying to evict them all. | |
965 | */ | |
966 | if (test_bit(SDF_EVICTING, &sdp->sd_flags)) | |
967 | return 1; | |
968 | ||
45321ac5 | 969 | return generic_drop_inode(inode); |
9e6e0a12 SW |
970 | } |
971 | ||
972 | static int is_ancestor(const struct dentry *d1, const struct dentry *d2) | |
973 | { | |
974 | do { | |
975 | if (d1 == d2) | |
976 | return 1; | |
977 | d1 = d1->d_parent; | |
978 | } while (!IS_ROOT(d1)); | |
979 | return 0; | |
980 | } | |
981 | ||
982 | /** | |
983 | * gfs2_show_options - Show mount options for /proc/mounts | |
984 | * @s: seq_file structure | |
34c80b1d | 985 | * @root: root of this (sub)tree |
9e6e0a12 SW |
986 | * |
987 | * Returns: 0 on success or error code | |
988 | */ | |
989 | ||
34c80b1d | 990 | static int gfs2_show_options(struct seq_file *s, struct dentry *root) |
9e6e0a12 | 991 | { |
34c80b1d | 992 | struct gfs2_sbd *sdp = root->d_sb->s_fs_info; |
9e6e0a12 | 993 | struct gfs2_args *args = &sdp->sd_args; |
3d3c10f2 | 994 | int val; |
9e6e0a12 | 995 | |
34c80b1d | 996 | if (is_ancestor(root, sdp->sd_master_dir)) |
eaebdedc | 997 | seq_puts(s, ",meta"); |
9e6e0a12 | 998 | if (args->ar_lockproto[0]) |
a068acf2 | 999 | seq_show_option(s, "lockproto", args->ar_lockproto); |
9e6e0a12 | 1000 | if (args->ar_locktable[0]) |
a068acf2 | 1001 | seq_show_option(s, "locktable", args->ar_locktable); |
9e6e0a12 | 1002 | if (args->ar_hostdata[0]) |
a068acf2 | 1003 | seq_show_option(s, "hostdata", args->ar_hostdata); |
9e6e0a12 | 1004 | if (args->ar_spectator) |
eaebdedc | 1005 | seq_puts(s, ",spectator"); |
9e6e0a12 | 1006 | if (args->ar_localflocks) |
eaebdedc | 1007 | seq_puts(s, ",localflocks"); |
9e6e0a12 | 1008 | if (args->ar_debug) |
eaebdedc | 1009 | seq_puts(s, ",debug"); |
9e6e0a12 | 1010 | if (args->ar_posix_acl) |
eaebdedc | 1011 | seq_puts(s, ",acl"); |
9e6e0a12 SW |
1012 | if (args->ar_quota != GFS2_QUOTA_DEFAULT) { |
1013 | char *state; | |
1014 | switch (args->ar_quota) { | |
1015 | case GFS2_QUOTA_OFF: | |
1016 | state = "off"; | |
1017 | break; | |
1018 | case GFS2_QUOTA_ACCOUNT: | |
1019 | state = "account"; | |
1020 | break; | |
1021 | case GFS2_QUOTA_ON: | |
1022 | state = "on"; | |
1023 | break; | |
1024 | default: | |
1025 | state = "unknown"; | |
1026 | break; | |
1027 | } | |
1028 | seq_printf(s, ",quota=%s", state); | |
1029 | } | |
1030 | if (args->ar_suiddir) | |
eaebdedc | 1031 | seq_puts(s, ",suiddir"); |
9e6e0a12 SW |
1032 | if (args->ar_data != GFS2_DATA_DEFAULT) { |
1033 | char *state; | |
1034 | switch (args->ar_data) { | |
1035 | case GFS2_DATA_WRITEBACK: | |
1036 | state = "writeback"; | |
1037 | break; | |
1038 | case GFS2_DATA_ORDERED: | |
1039 | state = "ordered"; | |
1040 | break; | |
1041 | default: | |
1042 | state = "unknown"; | |
1043 | break; | |
1044 | } | |
1045 | seq_printf(s, ",data=%s", state); | |
1046 | } | |
1047 | if (args->ar_discard) | |
eaebdedc | 1048 | seq_puts(s, ",discard"); |
5e687eac BM |
1049 | val = sdp->sd_tune.gt_logd_secs; |
1050 | if (val != 30) | |
3d3c10f2 BM |
1051 | seq_printf(s, ",commit=%d", val); |
1052 | val = sdp->sd_tune.gt_statfs_quantum; | |
1053 | if (val != 30) | |
1054 | seq_printf(s, ",statfs_quantum=%d", val); | |
2b9731e8 SW |
1055 | else if (sdp->sd_tune.gt_statfs_slow) |
1056 | seq_puts(s, ",statfs_quantum=0"); | |
3d3c10f2 BM |
1057 | val = sdp->sd_tune.gt_quota_quantum; |
1058 | if (val != 60) | |
1059 | seq_printf(s, ",quota_quantum=%d", val); | |
1060 | if (args->ar_statfs_percent) | |
1061 | seq_printf(s, ",statfs_percent=%d", args->ar_statfs_percent); | |
d34843d0 BP |
1062 | if (args->ar_errors != GFS2_ERRORS_DEFAULT) { |
1063 | const char *state; | |
1064 | ||
1065 | switch (args->ar_errors) { | |
1066 | case GFS2_ERRORS_WITHDRAW: | |
1067 | state = "withdraw"; | |
1068 | break; | |
1069 | case GFS2_ERRORS_PANIC: | |
1070 | state = "panic"; | |
1071 | break; | |
1072 | default: | |
1073 | state = "unknown"; | |
1074 | break; | |
1075 | } | |
1076 | seq_printf(s, ",errors=%s", state); | |
1077 | } | |
cdcfde62 | 1078 | if (test_bit(SDF_NOBARRIERS, &sdp->sd_flags)) |
eaebdedc | 1079 | seq_puts(s, ",nobarrier"); |
913a71d2 | 1080 | if (test_bit(SDF_DEMOTE, &sdp->sd_flags)) |
eaebdedc | 1081 | seq_puts(s, ",demote_interface_used"); |
90306c41 | 1082 | if (args->ar_rgrplvb) |
eaebdedc | 1083 | seq_puts(s, ",rgrplvb"); |
471f3db2 BM |
1084 | if (args->ar_loccookie) |
1085 | seq_puts(s, ",loccookie"); | |
9e6e0a12 SW |
1086 | return 0; |
1087 | } | |
1088 | ||
f42ab085 SW |
1089 | static void gfs2_final_release_pages(struct gfs2_inode *ip) |
1090 | { | |
1091 | struct inode *inode = &ip->i_inode; | |
1092 | struct gfs2_glock *gl = ip->i_gl; | |
1093 | ||
38552ff6 AG |
1094 | if (unlikely(!gl)) { |
1095 | /* This can only happen during incomplete inode creation. */ | |
1096 | BUG_ON(!test_bit(GIF_ALLOC_FAILED, &ip->i_flags)); | |
1097 | return; | |
1098 | } | |
1099 | ||
1100 | truncate_inode_pages(gfs2_glock2aspace(gl), 0); | |
f42ab085 SW |
1101 | truncate_inode_pages(&inode->i_data, 0); |
1102 | ||
638803d4 | 1103 | if (atomic_read(&gl->gl_revokes) == 0) { |
f42ab085 SW |
1104 | clear_bit(GLF_LFLUSH, &gl->gl_flags); |
1105 | clear_bit(GLF_DIRTY, &gl->gl_flags); | |
1106 | } | |
1107 | } | |
1108 | ||
1109 | static int gfs2_dinode_dealloc(struct gfs2_inode *ip) | |
1110 | { | |
1111 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); | |
f42ab085 | 1112 | struct gfs2_rgrpd *rgd; |
564e12b1 | 1113 | struct gfs2_holder gh; |
f42ab085 SW |
1114 | int error; |
1115 | ||
1116 | if (gfs2_get_inode_blocks(&ip->i_inode) != 1) { | |
94fb763b | 1117 | gfs2_consist_inode(ip); |
f42ab085 SW |
1118 | return -EIO; |
1119 | } | |
1120 | ||
8e2e0047 BP |
1121 | error = gfs2_rindex_update(sdp); |
1122 | if (error) | |
1123 | return error; | |
f42ab085 | 1124 | |
f4108a60 | 1125 | error = gfs2_quota_hold(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE); |
f42ab085 | 1126 | if (error) |
5407e242 | 1127 | return error; |
f42ab085 | 1128 | |
66fc061b | 1129 | rgd = gfs2_blk2rgrpd(sdp, ip->i_no_addr, 1); |
f42ab085 SW |
1130 | if (!rgd) { |
1131 | gfs2_consist_inode(ip); | |
1132 | error = -EIO; | |
8339ee54 | 1133 | goto out_qs; |
f42ab085 SW |
1134 | } |
1135 | ||
4fc7ec31 BP |
1136 | error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE, |
1137 | LM_FLAG_NODE_SCOPE, &gh); | |
f42ab085 | 1138 | if (error) |
8339ee54 | 1139 | goto out_qs; |
f42ab085 | 1140 | |
4667a0ec SW |
1141 | error = gfs2_trans_begin(sdp, RES_RG_BIT + RES_STATFS + RES_QUOTA, |
1142 | sdp->sd_jdesc->jd_blocks); | |
f42ab085 SW |
1143 | if (error) |
1144 | goto out_rg_gunlock; | |
1145 | ||
1146 | gfs2_free_di(rgd, ip); | |
1147 | ||
1148 | gfs2_final_release_pages(ip); | |
1149 | ||
1150 | gfs2_trans_end(sdp); | |
1151 | ||
1152 | out_rg_gunlock: | |
564e12b1 | 1153 | gfs2_glock_dq_uninit(&gh); |
f42ab085 SW |
1154 | out_qs: |
1155 | gfs2_quota_unhold(ip); | |
f42ab085 SW |
1156 | return error; |
1157 | } | |
1158 | ||
71c1b213 AG |
1159 | /** |
1160 | * gfs2_glock_put_eventually | |
1161 | * @gl: The glock to put | |
1162 | * | |
1163 | * When under memory pressure, trigger a deferred glock put to make sure we | |
1164 | * won't call into DLM and deadlock. Otherwise, put the glock directly. | |
1165 | */ | |
1166 | ||
1167 | static void gfs2_glock_put_eventually(struct gfs2_glock *gl) | |
1168 | { | |
1169 | if (current->flags & PF_MEMALLOC) | |
1170 | gfs2_glock_queue_put(gl); | |
1171 | else | |
1172 | gfs2_glock_put(gl); | |
1173 | } | |
1174 | ||
9e73330f AG |
1175 | static bool gfs2_upgrade_iopen_glock(struct inode *inode) |
1176 | { | |
1177 | struct gfs2_inode *ip = GFS2_I(inode); | |
1178 | struct gfs2_sbd *sdp = GFS2_SB(inode); | |
1179 | struct gfs2_holder *gh = &ip->i_iopen_gh; | |
1180 | long timeout = 5 * HZ; | |
1181 | int error; | |
1182 | ||
1183 | gh->gh_flags |= GL_NOCACHE; | |
1184 | gfs2_glock_dq_wait(gh); | |
1185 | ||
1186 | /* | |
2d143955 AG |
1187 | * If there are no other lock holders, we will immediately get |
1188 | * exclusive access to the iopen glock here. | |
1189 | * | |
9e73330f | 1190 | * Otherwise, the other nodes holding the lock will be notified about |
2d143955 AG |
1191 | * our locking request. If they do not have the inode open, they are |
1192 | * expected to evict the cached inode and release the lock, allowing us | |
1193 | * to proceed. | |
1194 | * | |
1195 | * Otherwise, if they cannot evict the inode, they are expected to poke | |
1196 | * the inode glock (note: not the iopen glock). We will notice that | |
1197 | * and stop waiting for the iopen glock immediately. The other node(s) | |
1198 | * are then expected to take care of deleting the inode when they no | |
1199 | * longer use it. | |
1200 | * | |
1201 | * As a last resort, if another node keeps holding the iopen glock | |
1202 | * without showing any activity on the inode glock, we will eventually | |
1203 | * time out and fail the iopen glock upgrade. | |
9e73330f AG |
1204 | * |
1205 | * Note that we're passing the LM_FLAG_TRY_1CB flag to the first | |
1206 | * locking request as an optimization to notify lock holders as soon as | |
1207 | * possible. Without that flag, they'd be notified implicitly by the | |
1208 | * second locking request. | |
1209 | */ | |
1210 | ||
1211 | gfs2_holder_reinit(LM_ST_EXCLUSIVE, LM_FLAG_TRY_1CB | GL_NOCACHE, gh); | |
1212 | error = gfs2_glock_nq(gh); | |
1213 | if (error != GLR_TRYFAILED) | |
1214 | return !error; | |
1215 | ||
1216 | gfs2_holder_reinit(LM_ST_EXCLUSIVE, GL_ASYNC | GL_NOCACHE, gh); | |
1217 | error = gfs2_glock_nq(gh); | |
1218 | if (error) | |
1219 | return false; | |
1220 | ||
1221 | timeout = wait_event_interruptible_timeout(sdp->sd_async_glock_wait, | |
9e8990de AG |
1222 | !test_bit(HIF_WAIT, &gh->gh_iflags) || |
1223 | test_bit(GLF_DEMOTE, &ip->i_gl->gl_flags), | |
9e73330f AG |
1224 | timeout); |
1225 | if (!test_bit(HIF_HOLDER, &gh->gh_iflags)) { | |
1226 | gfs2_glock_dq(gh); | |
1227 | return false; | |
1228 | } | |
53d69132 | 1229 | return gfs2_glock_holder_ready(gh) == 0; |
9e73330f AG |
1230 | } |
1231 | ||
53dbc27e BP |
1232 | /** |
1233 | * evict_should_delete - determine whether the inode is eligible for deletion | |
1234 | * @inode: The inode to evict | |
c551f66c | 1235 | * @gh: The glock holder structure |
53dbc27e BP |
1236 | * |
1237 | * This function determines whether the evicted inode is eligible to be deleted | |
1238 | * and locks the inode glock. | |
1239 | * | |
1240 | * Returns: the fate of the dinode | |
1241 | */ | |
1242 | static enum dinode_demise evict_should_delete(struct inode *inode, | |
1243 | struct gfs2_holder *gh) | |
1244 | { | |
1245 | struct gfs2_inode *ip = GFS2_I(inode); | |
1246 | struct super_block *sb = inode->i_sb; | |
1247 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
1248 | int ret; | |
1249 | ||
38552ff6 | 1250 | if (unlikely(test_bit(GIF_ALLOC_FAILED, &ip->i_flags))) |
53dbc27e | 1251 | goto should_delete; |
53dbc27e BP |
1252 | |
1253 | if (test_bit(GIF_DEFERRED_DELETE, &ip->i_flags)) | |
1254 | return SHOULD_DEFER_EVICTION; | |
1255 | ||
1256 | /* Deletes should never happen under memory pressure anymore. */ | |
1257 | if (WARN_ON_ONCE(current->flags & PF_MEMALLOC)) | |
1258 | return SHOULD_DEFER_EVICTION; | |
1259 | ||
1260 | /* Must not read inode block until block type has been verified */ | |
1261 | ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_SKIP, gh); | |
1262 | if (unlikely(ret)) { | |
1263 | glock_clear_object(ip->i_iopen_gh.gh_gl, ip); | |
1264 | ip->i_iopen_gh.gh_flags |= GL_NOCACHE; | |
1265 | gfs2_glock_dq_uninit(&ip->i_iopen_gh); | |
1266 | return SHOULD_DEFER_EVICTION; | |
1267 | } | |
1268 | ||
1269 | if (gfs2_inode_already_deleted(ip->i_gl, ip->i_no_formal_ino)) | |
1270 | return SHOULD_NOT_DELETE_DINODE; | |
1271 | ret = gfs2_check_blk_type(sdp, ip->i_no_addr, GFS2_BLKST_UNLINKED); | |
1272 | if (ret) | |
1273 | return SHOULD_NOT_DELETE_DINODE; | |
1274 | ||
8d567162 AG |
1275 | ret = gfs2_instantiate(gh); |
1276 | if (ret) | |
1277 | return SHOULD_NOT_DELETE_DINODE; | |
53dbc27e BP |
1278 | |
1279 | /* | |
1280 | * The inode may have been recreated in the meantime. | |
1281 | */ | |
1282 | if (inode->i_nlink) | |
1283 | return SHOULD_NOT_DELETE_DINODE; | |
1284 | ||
1285 | should_delete: | |
1286 | if (gfs2_holder_initialized(&ip->i_iopen_gh) && | |
1287 | test_bit(HIF_HOLDER, &ip->i_iopen_gh.gh_iflags)) { | |
1288 | if (!gfs2_upgrade_iopen_glock(inode)) { | |
1289 | gfs2_holder_uninit(&ip->i_iopen_gh); | |
1290 | return SHOULD_NOT_DELETE_DINODE; | |
1291 | } | |
1292 | } | |
1293 | return SHOULD_DELETE_DINODE; | |
1294 | } | |
1295 | ||
6e7e9a50 BP |
1296 | /** |
1297 | * evict_unlinked_inode - delete the pieces of an unlinked evicted inode | |
1298 | * @inode: The inode to evict | |
1299 | */ | |
1300 | static int evict_unlinked_inode(struct inode *inode) | |
1301 | { | |
1302 | struct gfs2_inode *ip = GFS2_I(inode); | |
1303 | int ret; | |
1304 | ||
1305 | if (S_ISDIR(inode->i_mode) && | |
1306 | (ip->i_diskflags & GFS2_DIF_EXHASH)) { | |
1307 | ret = gfs2_dir_exhash_dealloc(ip); | |
1308 | if (ret) | |
1309 | goto out; | |
1310 | } | |
1311 | ||
1312 | if (ip->i_eattr) { | |
1313 | ret = gfs2_ea_dealloc(ip); | |
1314 | if (ret) | |
1315 | goto out; | |
1316 | } | |
1317 | ||
1318 | if (!gfs2_is_stuffed(ip)) { | |
1319 | ret = gfs2_file_dealloc(ip); | |
1320 | if (ret) | |
1321 | goto out; | |
1322 | } | |
1323 | ||
764665c6 | 1324 | if (ip->i_gl) |
38552ff6 | 1325 | gfs2_inode_remember_delete(ip->i_gl, ip->i_no_formal_ino); |
764665c6 AG |
1326 | |
1327 | /* | |
1328 | * As soon as we clear the bitmap for the dinode, gfs2_create_inode() | |
1329 | * can get called to recreate it, or even gfs2_inode_lookup() if the | |
1330 | * inode was recreated on another node in the meantime. | |
1331 | * | |
1332 | * However, inserting the new inode into the inode hash table will not | |
1333 | * succeed until the old inode is removed, and that only happens after | |
1334 | * ->evict_inode() returns. The new inode is attached to its inode and | |
1335 | * iopen glocks after inserting it into the inode hash table, so at | |
1336 | * that point we can be sure that both glocks are unused. | |
1337 | */ | |
1338 | ||
6e7e9a50 | 1339 | ret = gfs2_dinode_dealloc(ip); |
6e7e9a50 BP |
1340 | out: |
1341 | return ret; | |
1342 | } | |
1343 | ||
d90be6ab BP |
1344 | /* |
1345 | * evict_linked_inode - evict an inode whose dinode has not been unlinked | |
1346 | * @inode: The inode to evict | |
1347 | */ | |
1348 | static int evict_linked_inode(struct inode *inode) | |
1349 | { | |
1350 | struct super_block *sb = inode->i_sb; | |
1351 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
1352 | struct gfs2_inode *ip = GFS2_I(inode); | |
1353 | struct address_space *metamapping; | |
1354 | int ret; | |
1355 | ||
1356 | gfs2_log_flush(sdp, ip->i_gl, GFS2_LOG_HEAD_FLUSH_NORMAL | | |
1357 | GFS2_LFC_EVICT_INODE); | |
1358 | metamapping = gfs2_glock2aspace(ip->i_gl); | |
1359 | if (test_bit(GLF_DIRTY, &ip->i_gl->gl_flags)) { | |
1360 | filemap_fdatawrite(metamapping); | |
1361 | filemap_fdatawait(metamapping); | |
1362 | } | |
1363 | write_inode_now(inode, 1); | |
1364 | gfs2_ail_flush(ip->i_gl, 0); | |
1365 | ||
1366 | ret = gfs2_trans_begin(sdp, 0, sdp->sd_jdesc->jd_blocks); | |
1367 | if (ret) | |
1368 | return ret; | |
1369 | ||
1370 | /* Needs to be done before glock release & also in a transaction */ | |
1371 | truncate_inode_pages(&inode->i_data, 0); | |
1372 | truncate_inode_pages(metamapping, 0); | |
1373 | gfs2_trans_end(sdp); | |
1374 | return 0; | |
1375 | } | |
1376 | ||
380f7c65 SW |
1377 | /** |
1378 | * gfs2_evict_inode - Remove an inode from cache | |
1379 | * @inode: The inode to evict | |
1380 | * | |
1381 | * There are three cases to consider: | |
1382 | * 1. i_nlink == 0, we are final opener (and must deallocate) | |
1383 | * 2. i_nlink == 0, we are not the final opener (and cannot deallocate) | |
1384 | * 3. i_nlink > 0 | |
1385 | * | |
1386 | * If the fs is read only, then we have to treat all cases as per #3 | |
1387 | * since we are unable to do any deallocation. The inode will be | |
1388 | * deallocated by the next read/write node to attempt an allocation | |
1389 | * in the same resource group | |
1390 | * | |
9e6e0a12 SW |
1391 | * We have to (at the moment) hold the inodes main lock to cover |
1392 | * the gap between unlocking the shared lock on the iopen lock and | |
1393 | * taking the exclusive lock. I'd rather do a shared -> exclusive | |
1394 | * conversion on the iopen lock, but we can change that later. This | |
1395 | * is safe, just less efficient. | |
1396 | */ | |
1397 | ||
d5c1515c | 1398 | static void gfs2_evict_inode(struct inode *inode) |
9e6e0a12 | 1399 | { |
001e8e8d SW |
1400 | struct super_block *sb = inode->i_sb; |
1401 | struct gfs2_sbd *sdp = sb->s_fs_info; | |
9e6e0a12 SW |
1402 | struct gfs2_inode *ip = GFS2_I(inode); |
1403 | struct gfs2_holder gh; | |
23d828fc | 1404 | int ret; |
9e6e0a12 | 1405 | |
38552ff6 | 1406 | if (inode->i_nlink || sb_rdonly(sb) || !ip->i_no_addr) |
d5c1515c AV |
1407 | goto out; |
1408 | ||
53dbc27e BP |
1409 | gfs2_holder_mark_uninitialized(&gh); |
1410 | ret = evict_should_delete(inode, &gh); | |
1411 | if (ret == SHOULD_DEFER_EVICTION) | |
8c7b9262 | 1412 | goto out; |
0a0d9f55 BP |
1413 | if (ret == SHOULD_DELETE_DINODE) |
1414 | ret = evict_unlinked_inode(inode); | |
1415 | else | |
1416 | ret = evict_linked_inode(inode); | |
9e6e0a12 | 1417 | |
a097dc7e BP |
1418 | if (gfs2_rs_active(&ip->i_res)) |
1419 | gfs2_rs_deltree(&ip->i_res); | |
8e2e0047 | 1420 | |
9ffa1888 | 1421 | if (gfs2_holder_initialized(&gh)) |
e0b62e21 | 1422 | gfs2_glock_dq_uninit(&gh); |
23d828fc BP |
1423 | if (ret && ret != GLR_TRYFAILED && ret != -EROFS) |
1424 | fs_warn(sdp, "gfs2_evict_inode: %d\n", ret); | |
9e6e0a12 | 1425 | out: |
91b0abe3 | 1426 | truncate_inode_pages_final(&inode->i_data); |
2fba46a0 BP |
1427 | if (ip->i_qadata) |
1428 | gfs2_assert_warn(sdp, ip->i_qadata->qa_ref == 0); | |
7336905a | 1429 | gfs2_rs_deltree(&ip->i_res); |
45138990 | 1430 | gfs2_ordered_del_inode(ip); |
dbd5768f | 1431 | clear_inode(inode); |
17d539f0 | 1432 | gfs2_dir_hash_inval(ip); |
6df9f9a2 | 1433 | if (gfs2_holder_initialized(&ip->i_iopen_gh)) { |
71c1b213 AG |
1434 | struct gfs2_glock *gl = ip->i_iopen_gh.gh_gl; |
1435 | ||
1436 | glock_clear_object(gl, ip); | |
71c1b213 | 1437 | gfs2_glock_hold(gl); |
fe1bff65 AG |
1438 | ip->i_iopen_gh.gh_flags |= GL_NOCACHE; |
1439 | gfs2_glock_dq_uninit(&ip->i_iopen_gh); | |
71c1b213 | 1440 | gfs2_glock_put_eventually(gl); |
d5c1515c | 1441 | } |
49462e2b BP |
1442 | if (ip->i_gl) { |
1443 | glock_clear_object(ip->i_gl, ip); | |
1444 | wait_on_bit_io(&ip->i_flags, GIF_GLOP_PENDING, TASK_UNINTERRUPTIBLE); | |
1445 | gfs2_glock_add_to_lru(ip->i_gl); | |
1446 | gfs2_glock_put_eventually(ip->i_gl); | |
1447 | ip->i_gl = NULL; | |
1448 | } | |
9e6e0a12 SW |
1449 | } |
1450 | ||
1451 | static struct inode *gfs2_alloc_inode(struct super_block *sb) | |
1452 | { | |
1453 | struct gfs2_inode *ip; | |
1454 | ||
fd60b288 | 1455 | ip = alloc_inode_sb(sb, gfs2_inode_cachep, GFP_KERNEL); |
d4031259 AG |
1456 | if (!ip) |
1457 | return NULL; | |
38552ff6 | 1458 | ip->i_no_addr = 0; |
d4031259 AG |
1459 | ip->i_flags = 0; |
1460 | ip->i_gl = NULL; | |
40e7e86e | 1461 | gfs2_holder_mark_uninitialized(&ip->i_iopen_gh); |
d4031259 AG |
1462 | memset(&ip->i_res, 0, sizeof(ip->i_res)); |
1463 | RB_CLEAR_NODE(&ip->i_res.rs_node); | |
1464 | ip->i_rahead = 0; | |
9e6e0a12 SW |
1465 | return &ip->i_inode; |
1466 | } | |
1467 | ||
784494e1 | 1468 | static void gfs2_free_inode(struct inode *inode) |
9e6e0a12 | 1469 | { |
784494e1 | 1470 | kmem_cache_free(gfs2_inode_cachep, GFS2_I(inode)); |
fa0d7e3d NP |
1471 | } |
1472 | ||
97fd734b AD |
1473 | extern void free_local_statfs_inodes(struct gfs2_sbd *sdp) |
1474 | { | |
1475 | struct local_statfs_inode *lsi, *safe; | |
1476 | ||
1477 | /* Run through the statfs inodes list to iput and free memory */ | |
1478 | list_for_each_entry_safe(lsi, safe, &sdp->sd_sc_inodes_list, si_list) { | |
1479 | if (lsi->si_jid == sdp->sd_jdesc->jd_jid) | |
1480 | sdp->sd_sc_inode = NULL; /* belongs to this node */ | |
1481 | if (lsi->si_sc_inode) | |
1482 | iput(lsi->si_sc_inode); | |
1483 | list_del(&lsi->si_list); | |
1484 | kfree(lsi); | |
1485 | } | |
1486 | } | |
1487 | ||
1488 | extern struct inode *find_local_statfs_inode(struct gfs2_sbd *sdp, | |
1489 | unsigned int index) | |
1490 | { | |
1491 | struct local_statfs_inode *lsi; | |
1492 | ||
1493 | /* Return the local (per node) statfs inode in the | |
1494 | * sdp->sd_sc_inodes_list corresponding to the 'index'. */ | |
1495 | list_for_each_entry(lsi, &sdp->sd_sc_inodes_list, si_list) { | |
1496 | if (lsi->si_jid == index) | |
1497 | return lsi->si_sc_inode; | |
1498 | } | |
1499 | return NULL; | |
1500 | } | |
1501 | ||
9e6e0a12 SW |
1502 | const struct super_operations gfs2_super_ops = { |
1503 | .alloc_inode = gfs2_alloc_inode, | |
784494e1 | 1504 | .free_inode = gfs2_free_inode, |
9e6e0a12 | 1505 | .write_inode = gfs2_write_inode, |
ab9bbda0 | 1506 | .dirty_inode = gfs2_dirty_inode, |
d5c1515c | 1507 | .evict_inode = gfs2_evict_inode, |
9e6e0a12 | 1508 | .put_super = gfs2_put_super, |
9e6e0a12 | 1509 | .sync_fs = gfs2_sync_fs, |
2e60d768 BM |
1510 | .freeze_super = gfs2_freeze, |
1511 | .thaw_super = gfs2_unfreeze, | |
9e6e0a12 | 1512 | .statfs = gfs2_statfs, |
9e6e0a12 SW |
1513 | .drop_inode = gfs2_drop_inode, |
1514 | .show_options = gfs2_show_options, | |
1515 | }; | |
1516 |