]>
Commit | Line | Data |
---|---|---|
b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
3d14c5d2 | 2 | #include <linux/ceph/ceph_debug.h> |
2817b000 SW |
3 | |
4 | #include <linux/spinlock.h> | |
2817b000 | 5 | #include <linux/namei.h> |
5a0e3ad6 | 6 | #include <linux/slab.h> |
2817b000 | 7 | #include <linux/sched.h> |
2cdeb1e4 | 8 | #include <linux/xattr.h> |
2817b000 SW |
9 | |
10 | #include "super.h" | |
3d14c5d2 | 11 | #include "mds_client.h" |
2817b000 SW |
12 | |
13 | /* | |
14 | * Directory operations: readdir, lookup, create, link, unlink, | |
15 | * rename, etc. | |
16 | */ | |
17 | ||
18 | /* | |
19 | * Ceph MDS operations are specified in terms of a base ino and | |
20 | * relative path. Thus, the client can specify an operation on a | |
21 | * specific inode (e.g., a getattr due to fstat(2)), or as a path | |
22 | * relative to, say, the root directory. | |
23 | * | |
24 | * Normally, we limit ourselves to strict inode ops (no path component) | |
25 | * or dentry operations (a single path component relative to an ino). The | |
26 | * exception to this is open_root_dentry(), which will open the mount | |
27 | * point by name. | |
28 | */ | |
29 | ||
52dfb8ac | 30 | const struct dentry_operations ceph_dentry_ops; |
2817b000 | 31 | |
37c4efc1 YZ |
32 | static bool __dentry_lease_is_valid(struct ceph_dentry_info *di); |
33 | static int __dir_lease_try_check(const struct dentry *dentry); | |
34 | ||
2817b000 SW |
35 | /* |
36 | * Initialize ceph dentry state. | |
37 | */ | |
ad5cb123 | 38 | static int ceph_d_init(struct dentry *dentry) |
2817b000 SW |
39 | { |
40 | struct ceph_dentry_info *di; | |
41 | ||
99ec2697 | 42 | di = kmem_cache_zalloc(ceph_dentry_cachep, GFP_KERNEL); |
2817b000 SW |
43 | if (!di) |
44 | return -ENOMEM; /* oh well */ | |
45 | ||
2817b000 SW |
46 | di->dentry = dentry; |
47 | di->lease_session = NULL; | |
9b16f03c | 48 | di->time = jiffies; |
48d0cbd1 | 49 | dentry->d_fsdata = di; |
37c4efc1 | 50 | INIT_LIST_HEAD(&di->lease_list); |
2817b000 SW |
51 | return 0; |
52 | } | |
53 | ||
2817b000 | 54 | /* |
f3c4ebe6 YZ |
55 | * for f_pos for readdir: |
56 | * - hash order: | |
57 | * (0xff << 52) | ((24 bits hash) << 28) | | |
58 | * (the nth entry has hash collision); | |
59 | * - frag+name order; | |
60 | * ((frag value) << 28) | (the nth entry in frag); | |
2817b000 | 61 | */ |
f3c4ebe6 YZ |
62 | #define OFFSET_BITS 28 |
63 | #define OFFSET_MASK ((1 << OFFSET_BITS) - 1) | |
64 | #define HASH_ORDER (0xffull << (OFFSET_BITS + 24)) | |
65 | loff_t ceph_make_fpos(unsigned high, unsigned off, bool hash_order) | |
66 | { | |
67 | loff_t fpos = ((loff_t)high << 28) | (loff_t)off; | |
68 | if (hash_order) | |
69 | fpos |= HASH_ORDER; | |
70 | return fpos; | |
71 | } | |
72 | ||
73 | static bool is_hash_order(loff_t p) | |
74 | { | |
75 | return (p & HASH_ORDER) == HASH_ORDER; | |
76 | } | |
77 | ||
2817b000 SW |
78 | static unsigned fpos_frag(loff_t p) |
79 | { | |
f3c4ebe6 | 80 | return p >> OFFSET_BITS; |
2817b000 | 81 | } |
f3c4ebe6 YZ |
82 | |
83 | static unsigned fpos_hash(loff_t p) | |
84 | { | |
85 | return ceph_frag_value(fpos_frag(p)); | |
86 | } | |
87 | ||
2817b000 SW |
88 | static unsigned fpos_off(loff_t p) |
89 | { | |
f3c4ebe6 | 90 | return p & OFFSET_MASK; |
2817b000 SW |
91 | } |
92 | ||
4d5f5df6 YZ |
93 | static int fpos_cmp(loff_t l, loff_t r) |
94 | { | |
95 | int v = ceph_frag_compare(fpos_frag(l), fpos_frag(r)); | |
96 | if (v) | |
97 | return v; | |
98 | return (int)(fpos_off(l) - fpos_off(r)); | |
99 | } | |
100 | ||
fdd4e158 YZ |
101 | /* |
102 | * make note of the last dentry we read, so we can | |
103 | * continue at the same lexicographical point, | |
104 | * regardless of what dir changes take place on the | |
105 | * server. | |
106 | */ | |
bb48bd4d | 107 | static int note_last_dentry(struct ceph_dir_file_info *dfi, const char *name, |
fdd4e158 YZ |
108 | int len, unsigned next_offset) |
109 | { | |
110 | char *buf = kmalloc(len+1, GFP_KERNEL); | |
111 | if (!buf) | |
112 | return -ENOMEM; | |
bb48bd4d CX |
113 | kfree(dfi->last_name); |
114 | dfi->last_name = buf; | |
115 | memcpy(dfi->last_name, name, len); | |
116 | dfi->last_name[len] = 0; | |
117 | dfi->next_offset = next_offset; | |
118 | dout("note_last_dentry '%s'\n", dfi->last_name); | |
fdd4e158 YZ |
119 | return 0; |
120 | } | |
121 | ||
c530cd24 YZ |
122 | |
123 | static struct dentry * | |
124 | __dcache_find_get_entry(struct dentry *parent, u64 idx, | |
125 | struct ceph_readdir_cache_control *cache_ctl) | |
126 | { | |
127 | struct inode *dir = d_inode(parent); | |
128 | struct dentry *dentry; | |
129 | unsigned idx_mask = (PAGE_SIZE / sizeof(struct dentry *)) - 1; | |
130 | loff_t ptr_pos = idx * sizeof(struct dentry *); | |
131 | pgoff_t ptr_pgoff = ptr_pos >> PAGE_SHIFT; | |
132 | ||
133 | if (ptr_pos >= i_size_read(dir)) | |
134 | return NULL; | |
135 | ||
136 | if (!cache_ctl->page || ptr_pgoff != page_index(cache_ctl->page)) { | |
137 | ceph_readdir_cache_release(cache_ctl); | |
138 | cache_ctl->page = find_lock_page(&dir->i_data, ptr_pgoff); | |
139 | if (!cache_ctl->page) { | |
140 | dout(" page %lu not found\n", ptr_pgoff); | |
141 | return ERR_PTR(-EAGAIN); | |
142 | } | |
143 | /* reading/filling the cache are serialized by | |
144 | i_mutex, no need to use page lock */ | |
145 | unlock_page(cache_ctl->page); | |
146 | cache_ctl->dentries = kmap(cache_ctl->page); | |
147 | } | |
148 | ||
149 | cache_ctl->index = idx & idx_mask; | |
150 | ||
151 | rcu_read_lock(); | |
152 | spin_lock(&parent->d_lock); | |
153 | /* check i_size again here, because empty directory can be | |
154 | * marked as complete while not holding the i_mutex. */ | |
155 | if (ceph_dir_is_complete_ordered(dir) && ptr_pos < i_size_read(dir)) | |
156 | dentry = cache_ctl->dentries[cache_ctl->index]; | |
157 | else | |
158 | dentry = NULL; | |
159 | spin_unlock(&parent->d_lock); | |
160 | if (dentry && !lockref_get_not_dead(&dentry->d_lockref)) | |
161 | dentry = NULL; | |
162 | rcu_read_unlock(); | |
163 | return dentry ? : ERR_PTR(-EAGAIN); | |
164 | } | |
165 | ||
2817b000 SW |
166 | /* |
167 | * When possible, we try to satisfy a readdir by peeking at the | |
168 | * dcache. We make this work by carefully ordering dentries on | |
946e51f2 | 169 | * d_child when we initially get results back from the MDS, and |
2817b000 SW |
170 | * falling back to a "normal" sync readdir if any dentries in the dir |
171 | * are dropped. | |
172 | * | |
2f276c51 | 173 | * Complete dir indicates that we have all dentries in the dir. It is |
2817b000 SW |
174 | * defined IFF we hold CEPH_CAP_FILE_SHARED (which will be revoked by |
175 | * the MDS if/when the directory is modified). | |
176 | */ | |
a30be7cb | 177 | static int __dcache_readdir(struct file *file, struct dir_context *ctx, |
97aeb6bf | 178 | int shared_gen) |
2817b000 | 179 | { |
bb48bd4d | 180 | struct ceph_dir_file_info *dfi = file->private_data; |
b583043e | 181 | struct dentry *parent = file->f_path.dentry; |
2b0143b5 | 182 | struct inode *dir = d_inode(parent); |
fdd4e158 | 183 | struct dentry *dentry, *last = NULL; |
2817b000 | 184 | struct ceph_dentry_info *di; |
fdd4e158 | 185 | struct ceph_readdir_cache_control cache_ctl = {}; |
c530cd24 YZ |
186 | u64 idx = 0; |
187 | int err = 0; | |
2817b000 | 188 | |
97aeb6bf | 189 | dout("__dcache_readdir %p v%u at %llx\n", dir, (unsigned)shared_gen, ctx->pos); |
2817b000 | 190 | |
c530cd24 YZ |
191 | /* search start position */ |
192 | if (ctx->pos > 2) { | |
193 | u64 count = div_u64(i_size_read(dir), sizeof(struct dentry *)); | |
194 | while (count > 0) { | |
195 | u64 step = count >> 1; | |
196 | dentry = __dcache_find_get_entry(parent, idx + step, | |
197 | &cache_ctl); | |
198 | if (!dentry) { | |
199 | /* use linar search */ | |
200 | idx = 0; | |
201 | break; | |
202 | } | |
203 | if (IS_ERR(dentry)) { | |
204 | err = PTR_ERR(dentry); | |
205 | goto out; | |
206 | } | |
207 | di = ceph_dentry(dentry); | |
208 | spin_lock(&dentry->d_lock); | |
209 | if (fpos_cmp(di->offset, ctx->pos) < 0) { | |
210 | idx += step + 1; | |
211 | count -= step + 1; | |
212 | } else { | |
213 | count = step; | |
214 | } | |
215 | spin_unlock(&dentry->d_lock); | |
216 | dput(dentry); | |
217 | } | |
2817b000 | 218 | |
c530cd24 | 219 | dout("__dcache_readdir %p cache idx %llu\n", dir, idx); |
2817b000 SW |
220 | } |
221 | ||
fdd4e158 | 222 | |
c530cd24 YZ |
223 | for (;;) { |
224 | bool emit_dentry = false; | |
225 | dentry = __dcache_find_get_entry(parent, idx++, &cache_ctl); | |
226 | if (!dentry) { | |
bb48bd4d | 227 | dfi->file_info.flags |= CEPH_F_ATEND; |
fdd4e158 YZ |
228 | err = 0; |
229 | break; | |
2817b000 | 230 | } |
c530cd24 YZ |
231 | if (IS_ERR(dentry)) { |
232 | err = PTR_ERR(dentry); | |
233 | goto out; | |
fdd4e158 YZ |
234 | } |
235 | ||
fdd4e158 | 236 | spin_lock(&dentry->d_lock); |
5495c2d0 YZ |
237 | di = ceph_dentry(dentry); |
238 | if (d_unhashed(dentry) || | |
239 | d_really_is_negative(dentry) || | |
240 | di->lease_shared_gen != shared_gen) { | |
241 | spin_unlock(&dentry->d_lock); | |
242 | dput(dentry); | |
243 | err = -EAGAIN; | |
244 | goto out; | |
245 | } | |
246 | if (fpos_cmp(ctx->pos, di->offset) <= 0) { | |
37c4efc1 | 247 | __ceph_dentry_dir_lease_touch(di); |
fdd4e158 YZ |
248 | emit_dentry = true; |
249 | } | |
da502956 | 250 | spin_unlock(&dentry->d_lock); |
2817b000 | 251 | |
fdd4e158 | 252 | if (emit_dentry) { |
f3c4ebe6 | 253 | dout(" %llx dentry %p %pd %p\n", di->offset, |
fdd4e158 YZ |
254 | dentry, dentry, d_inode(dentry)); |
255 | ctx->pos = di->offset; | |
256 | if (!dir_emit(ctx, dentry->d_name.name, | |
257 | dentry->d_name.len, | |
258 | ceph_translate_ino(dentry->d_sb, | |
259 | d_inode(dentry)->i_ino), | |
260 | d_inode(dentry)->i_mode >> 12)) { | |
261 | dput(dentry); | |
262 | err = 0; | |
263 | break; | |
264 | } | |
265 | ctx->pos++; | |
0081bd83 | 266 | |
fdd4e158 YZ |
267 | if (last) |
268 | dput(last); | |
269 | last = dentry; | |
270 | } else { | |
271 | dput(dentry); | |
2817b000 | 272 | } |
fdd4e158 | 273 | } |
c530cd24 | 274 | out: |
fdd4e158 YZ |
275 | ceph_readdir_cache_release(&cache_ctl); |
276 | if (last) { | |
277 | int ret; | |
278 | di = ceph_dentry(last); | |
bb48bd4d | 279 | ret = note_last_dentry(dfi, last->d_name.name, last->d_name.len, |
fdd4e158 YZ |
280 | fpos_off(di->offset) + 1); |
281 | if (ret < 0) | |
282 | err = ret; | |
2817b000 | 283 | dput(last); |
84583cfb | 284 | /* last_name no longer match cache index */ |
bb48bd4d CX |
285 | if (dfi->readdir_cache_idx >= 0) { |
286 | dfi->readdir_cache_idx = -1; | |
287 | dfi->dir_release_count = 0; | |
84583cfb | 288 | } |
fdd4e158 | 289 | } |
2817b000 SW |
290 | return err; |
291 | } | |
292 | ||
bb48bd4d | 293 | static bool need_send_readdir(struct ceph_dir_file_info *dfi, loff_t pos) |
f3c4ebe6 | 294 | { |
bb48bd4d | 295 | if (!dfi->last_readdir) |
f3c4ebe6 YZ |
296 | return true; |
297 | if (is_hash_order(pos)) | |
bb48bd4d | 298 | return !ceph_frag_contains_value(dfi->frag, fpos_hash(pos)); |
f3c4ebe6 | 299 | else |
bb48bd4d | 300 | return dfi->frag != fpos_frag(pos); |
f3c4ebe6 YZ |
301 | } |
302 | ||
77acfa29 | 303 | static int ceph_readdir(struct file *file, struct dir_context *ctx) |
2817b000 | 304 | { |
bb48bd4d | 305 | struct ceph_dir_file_info *dfi = file->private_data; |
77acfa29 | 306 | struct inode *inode = file_inode(file); |
2817b000 | 307 | struct ceph_inode_info *ci = ceph_inode(inode); |
3d14c5d2 YS |
308 | struct ceph_fs_client *fsc = ceph_inode_to_client(inode); |
309 | struct ceph_mds_client *mdsc = fsc->mdsc; | |
8974eebd | 310 | int i; |
2817b000 | 311 | int err; |
b50c2de5 | 312 | unsigned frag = -1; |
2817b000 | 313 | struct ceph_mds_reply_info_parsed *rinfo; |
2817b000 | 314 | |
8974eebd | 315 | dout("readdir %p file %p pos %llx\n", inode, file, ctx->pos); |
bb48bd4d | 316 | if (dfi->file_info.flags & CEPH_F_ATEND) |
2817b000 SW |
317 | return 0; |
318 | ||
319 | /* always start with . and .. */ | |
77acfa29 | 320 | if (ctx->pos == 0) { |
2817b000 | 321 | dout("readdir off 0 -> '.'\n"); |
77acfa29 | 322 | if (!dir_emit(ctx, ".", 1, |
ad1fee96 | 323 | ceph_translate_ino(inode->i_sb, inode->i_ino), |
77acfa29 | 324 | inode->i_mode >> 12)) |
2817b000 | 325 | return 0; |
77acfa29 | 326 | ctx->pos = 1; |
2817b000 | 327 | } |
77acfa29 | 328 | if (ctx->pos == 1) { |
b583043e | 329 | ino_t ino = parent_ino(file->f_path.dentry); |
2817b000 | 330 | dout("readdir off 1 -> '..'\n"); |
77acfa29 | 331 | if (!dir_emit(ctx, "..", 2, |
ad1fee96 | 332 | ceph_translate_ino(inode->i_sb, ino), |
77acfa29 | 333 | inode->i_mode >> 12)) |
2817b000 | 334 | return 0; |
77acfa29 | 335 | ctx->pos = 2; |
2817b000 SW |
336 | } |
337 | ||
338 | /* can we use the dcache? */ | |
be655596 | 339 | spin_lock(&ci->i_ceph_lock); |
fdd4e158 | 340 | if (ceph_test_mount_opt(fsc, DCACHE) && |
3d14c5d2 | 341 | !ceph_test_mount_opt(fsc, NOASYNCREADDIR) && |
a0dff78d | 342 | ceph_snap(inode) != CEPH_SNAPDIR && |
70db4f36 | 343 | __ceph_dir_is_complete_ordered(ci) && |
2817b000 | 344 | __ceph_caps_issued_mask(ci, CEPH_CAP_FILE_SHARED, 1)) { |
97aeb6bf | 345 | int shared_gen = atomic_read(&ci->i_shared_gen); |
be655596 | 346 | spin_unlock(&ci->i_ceph_lock); |
a30be7cb | 347 | err = __dcache_readdir(file, ctx, shared_gen); |
efa4c120 | 348 | if (err != -EAGAIN) |
2817b000 | 349 | return err; |
efa4c120 | 350 | } else { |
be655596 | 351 | spin_unlock(&ci->i_ceph_lock); |
2817b000 | 352 | } |
2817b000 SW |
353 | |
354 | /* proceed with a normal readdir */ | |
2817b000 SW |
355 | more: |
356 | /* do we have the correct frag content buffered? */ | |
bb48bd4d | 357 | if (need_send_readdir(dfi, ctx->pos)) { |
2817b000 SW |
358 | struct ceph_mds_request *req; |
359 | int op = ceph_snap(inode) == CEPH_SNAPDIR ? | |
360 | CEPH_MDS_OP_LSSNAP : CEPH_MDS_OP_READDIR; | |
361 | ||
362 | /* discard old result, if any */ | |
bb48bd4d CX |
363 | if (dfi->last_readdir) { |
364 | ceph_mdsc_put_request(dfi->last_readdir); | |
365 | dfi->last_readdir = NULL; | |
393f6620 | 366 | } |
2817b000 | 367 | |
f3c4ebe6 | 368 | if (is_hash_order(ctx->pos)) { |
b50c2de5 YZ |
369 | /* fragtree isn't always accurate. choose frag |
370 | * based on previous reply when possible. */ | |
371 | if (frag == (unsigned)-1) | |
372 | frag = ceph_choose_frag(ci, fpos_hash(ctx->pos), | |
373 | NULL, NULL); | |
f3c4ebe6 YZ |
374 | } else { |
375 | frag = fpos_frag(ctx->pos); | |
376 | } | |
377 | ||
2817b000 | 378 | dout("readdir fetching %llx.%llx frag %x offset '%s'\n", |
bb48bd4d | 379 | ceph_vinop(inode), frag, dfi->last_name); |
2817b000 SW |
380 | req = ceph_mdsc_create_request(mdsc, op, USE_AUTH_MDS); |
381 | if (IS_ERR(req)) | |
382 | return PTR_ERR(req); | |
54008399 YZ |
383 | err = ceph_alloc_readdir_reply_buffer(req, inode); |
384 | if (err) { | |
385 | ceph_mdsc_put_request(req); | |
386 | return err; | |
387 | } | |
2817b000 SW |
388 | /* hints to request -> mds selection code */ |
389 | req->r_direct_mode = USE_AUTH_MDS; | |
5d37ca14 YZ |
390 | if (op == CEPH_MDS_OP_READDIR) { |
391 | req->r_direct_hash = ceph_frag_value(frag); | |
392 | __set_bit(CEPH_MDS_R_DIRECT_IS_HASH, &req->r_req_flags); | |
87c91a96 | 393 | req->r_inode_drop = CEPH_CAP_FILE_EXCL; |
5d37ca14 | 394 | } |
bb48bd4d CX |
395 | if (dfi->last_name) { |
396 | req->r_path2 = kstrdup(dfi->last_name, GFP_KERNEL); | |
a149bb9a SK |
397 | if (!req->r_path2) { |
398 | ceph_mdsc_put_request(req); | |
399 | return -ENOMEM; | |
400 | } | |
79162547 YZ |
401 | } else if (is_hash_order(ctx->pos)) { |
402 | req->r_args.readdir.offset_hash = | |
403 | cpu_to_le32(fpos_hash(ctx->pos)); | |
a149bb9a | 404 | } |
79162547 | 405 | |
bb48bd4d CX |
406 | req->r_dir_release_cnt = dfi->dir_release_count; |
407 | req->r_dir_ordered_cnt = dfi->dir_ordered_count; | |
408 | req->r_readdir_cache_idx = dfi->readdir_cache_idx; | |
409 | req->r_readdir_offset = dfi->next_offset; | |
2817b000 | 410 | req->r_args.readdir.frag = cpu_to_le32(frag); |
956d39d6 YZ |
411 | req->r_args.readdir.flags = |
412 | cpu_to_le16(CEPH_READDIR_REPLY_BITFLAGS); | |
a149bb9a SK |
413 | |
414 | req->r_inode = inode; | |
415 | ihold(inode); | |
416 | req->r_dentry = dget(file->f_path.dentry); | |
2817b000 SW |
417 | err = ceph_mdsc_do_request(mdsc, NULL, req); |
418 | if (err < 0) { | |
419 | ceph_mdsc_put_request(req); | |
420 | return err; | |
421 | } | |
f3c4ebe6 YZ |
422 | dout("readdir got and parsed readdir result=%d on " |
423 | "frag %x, end=%d, complete=%d, hash_order=%d\n", | |
424 | err, frag, | |
2817b000 | 425 | (int)req->r_reply_info.dir_end, |
f3c4ebe6 YZ |
426 | (int)req->r_reply_info.dir_complete, |
427 | (int)req->r_reply_info.hash_order); | |
2817b000 | 428 | |
81c6aea5 YZ |
429 | rinfo = &req->r_reply_info; |
430 | if (le32_to_cpu(rinfo->dir_dir->frag) != frag) { | |
431 | frag = le32_to_cpu(rinfo->dir_dir->frag); | |
f3c4ebe6 | 432 | if (!rinfo->hash_order) { |
bb48bd4d | 433 | dfi->next_offset = req->r_readdir_offset; |
f3c4ebe6 YZ |
434 | /* adjust ctx->pos to beginning of frag */ |
435 | ctx->pos = ceph_make_fpos(frag, | |
bb48bd4d | 436 | dfi->next_offset, |
f3c4ebe6 YZ |
437 | false); |
438 | } | |
81c6aea5 | 439 | } |
fdd4e158 | 440 | |
bb48bd4d CX |
441 | dfi->frag = frag; |
442 | dfi->last_readdir = req; | |
2817b000 | 443 | |
bc2de10d | 444 | if (test_bit(CEPH_MDS_R_DID_PREPOPULATE, &req->r_req_flags)) { |
bb48bd4d CX |
445 | dfi->readdir_cache_idx = req->r_readdir_cache_idx; |
446 | if (dfi->readdir_cache_idx < 0) { | |
fdd4e158 | 447 | /* preclude from marking dir ordered */ |
bb48bd4d | 448 | dfi->dir_ordered_count = 0; |
8974eebd | 449 | } else if (ceph_frag_is_leftmost(frag) && |
bb48bd4d | 450 | dfi->next_offset == 2) { |
fdd4e158 YZ |
451 | /* note dir version at start of readdir so |
452 | * we can tell if any dentries get dropped */ | |
bb48bd4d CX |
453 | dfi->dir_release_count = req->r_dir_release_cnt; |
454 | dfi->dir_ordered_count = req->r_dir_ordered_cnt; | |
fdd4e158 YZ |
455 | } |
456 | } else { | |
4c069a58 | 457 | dout("readdir !did_prepopulate\n"); |
fdd4e158 | 458 | /* disable readdir cache */ |
bb48bd4d | 459 | dfi->readdir_cache_idx = -1; |
fdd4e158 | 460 | /* preclude from marking dir complete */ |
bb48bd4d | 461 | dfi->dir_release_count = 0; |
fdd4e158 YZ |
462 | } |
463 | ||
f3c4ebe6 YZ |
464 | /* note next offset and last dentry name */ |
465 | if (rinfo->dir_nr > 0) { | |
2a5beea3 YZ |
466 | struct ceph_mds_reply_dir_entry *rde = |
467 | rinfo->dir_entries + (rinfo->dir_nr-1); | |
f3c4ebe6 YZ |
468 | unsigned next_offset = req->r_reply_info.dir_end ? |
469 | 2 : (fpos_off(rde->offset) + 1); | |
bb48bd4d | 470 | err = note_last_dentry(dfi, rde->name, rde->name_len, |
f3c4ebe6 | 471 | next_offset); |
2817b000 SW |
472 | if (err) |
473 | return err; | |
f3c4ebe6 | 474 | } else if (req->r_reply_info.dir_end) { |
bb48bd4d | 475 | dfi->next_offset = 2; |
f3c4ebe6 | 476 | /* keep last name */ |
2817b000 SW |
477 | } |
478 | } | |
479 | ||
bb48bd4d | 480 | rinfo = &dfi->last_readdir->r_reply_info; |
8974eebd | 481 | dout("readdir frag %x num %d pos %llx chunk first %llx\n", |
bb48bd4d | 482 | dfi->frag, rinfo->dir_nr, ctx->pos, |
8974eebd | 483 | rinfo->dir_nr ? rinfo->dir_entries[0].offset : 0LL); |
77acfa29 | 484 | |
8974eebd YZ |
485 | i = 0; |
486 | /* search start position */ | |
487 | if (rinfo->dir_nr > 0) { | |
488 | int step, nr = rinfo->dir_nr; | |
489 | while (nr > 0) { | |
490 | step = nr >> 1; | |
491 | if (rinfo->dir_entries[i + step].offset < ctx->pos) { | |
492 | i += step + 1; | |
493 | nr -= step + 1; | |
494 | } else { | |
495 | nr = step; | |
496 | } | |
497 | } | |
498 | } | |
499 | for (; i < rinfo->dir_nr; i++) { | |
500 | struct ceph_mds_reply_dir_entry *rde = rinfo->dir_entries + i; | |
3105c19c SW |
501 | struct ceph_vino vino; |
502 | ino_t ino; | |
b50c2de5 | 503 | u32 ftype; |
3105c19c | 504 | |
8974eebd YZ |
505 | BUG_ON(rde->offset < ctx->pos); |
506 | ||
507 | ctx->pos = rde->offset; | |
508 | dout("readdir (%d/%d) -> %llx '%.*s' %p\n", | |
509 | i, rinfo->dir_nr, ctx->pos, | |
2a5beea3 | 510 | rde->name_len, rde->name, &rde->inode.in); |
8974eebd | 511 | |
2a5beea3 YZ |
512 | BUG_ON(!rde->inode.in); |
513 | ftype = le32_to_cpu(rde->inode.in->mode) >> 12; | |
514 | vino.ino = le64_to_cpu(rde->inode.in->ino); | |
515 | vino.snap = le64_to_cpu(rde->inode.in->snapid); | |
3105c19c | 516 | ino = ceph_vino_to_ino(vino); |
8974eebd | 517 | |
2a5beea3 YZ |
518 | if (!dir_emit(ctx, rde->name, rde->name_len, |
519 | ceph_translate_ino(inode->i_sb, ino), ftype)) { | |
2817b000 SW |
520 | dout("filldir stopping us...\n"); |
521 | return 0; | |
522 | } | |
77acfa29 | 523 | ctx->pos++; |
2817b000 SW |
524 | } |
525 | ||
bb48bd4d CX |
526 | ceph_mdsc_put_request(dfi->last_readdir); |
527 | dfi->last_readdir = NULL; | |
b50c2de5 | 528 | |
bb48bd4d CX |
529 | if (dfi->next_offset > 2) { |
530 | frag = dfi->frag; | |
2817b000 SW |
531 | goto more; |
532 | } | |
533 | ||
534 | /* more frags? */ | |
bb48bd4d CX |
535 | if (!ceph_frag_is_rightmost(dfi->frag)) { |
536 | frag = ceph_frag_next(dfi->frag); | |
f3c4ebe6 YZ |
537 | if (is_hash_order(ctx->pos)) { |
538 | loff_t new_pos = ceph_make_fpos(ceph_frag_value(frag), | |
bb48bd4d | 539 | dfi->next_offset, true); |
f3c4ebe6 YZ |
540 | if (new_pos > ctx->pos) |
541 | ctx->pos = new_pos; | |
542 | /* keep last_name */ | |
543 | } else { | |
bb48bd4d CX |
544 | ctx->pos = ceph_make_fpos(frag, dfi->next_offset, |
545 | false); | |
546 | kfree(dfi->last_name); | |
547 | dfi->last_name = NULL; | |
f3c4ebe6 | 548 | } |
2817b000 SW |
549 | dout("readdir next frag is %x\n", frag); |
550 | goto more; | |
551 | } | |
bb48bd4d | 552 | dfi->file_info.flags |= CEPH_F_ATEND; |
2817b000 SW |
553 | |
554 | /* | |
555 | * if dir_release_count still matches the dir, no dentries | |
556 | * were released during the whole readdir, and we should have | |
557 | * the complete dir contents in our cache. | |
558 | */ | |
bb48bd4d CX |
559 | if (atomic64_read(&ci->i_release_count) == |
560 | dfi->dir_release_count) { | |
fdd4e158 | 561 | spin_lock(&ci->i_ceph_lock); |
bb48bd4d CX |
562 | if (dfi->dir_ordered_count == |
563 | atomic64_read(&ci->i_ordered_count)) { | |
70db4f36 | 564 | dout(" marking %p complete and ordered\n", inode); |
fdd4e158 YZ |
565 | /* use i_size to track number of entries in |
566 | * readdir cache */ | |
bb48bd4d CX |
567 | BUG_ON(dfi->readdir_cache_idx < 0); |
568 | i_size_write(inode, dfi->readdir_cache_idx * | |
fdd4e158 YZ |
569 | sizeof(struct dentry*)); |
570 | } else { | |
70db4f36 | 571 | dout(" marking %p complete\n", inode); |
fdd4e158 | 572 | } |
bb48bd4d CX |
573 | __ceph_dir_set_complete(ci, dfi->dir_release_count, |
574 | dfi->dir_ordered_count); | |
fdd4e158 | 575 | spin_unlock(&ci->i_ceph_lock); |
2817b000 | 576 | } |
2817b000 | 577 | |
77acfa29 | 578 | dout("readdir %p file %p done.\n", inode, file); |
2817b000 SW |
579 | return 0; |
580 | } | |
581 | ||
bb48bd4d | 582 | static void reset_readdir(struct ceph_dir_file_info *dfi) |
2817b000 | 583 | { |
bb48bd4d CX |
584 | if (dfi->last_readdir) { |
585 | ceph_mdsc_put_request(dfi->last_readdir); | |
586 | dfi->last_readdir = NULL; | |
2817b000 | 587 | } |
bb48bd4d CX |
588 | kfree(dfi->last_name); |
589 | dfi->last_name = NULL; | |
590 | dfi->dir_release_count = 0; | |
591 | dfi->readdir_cache_idx = -1; | |
592 | dfi->next_offset = 2; /* compensate for . and .. */ | |
593 | dfi->file_info.flags &= ~CEPH_F_ATEND; | |
2817b000 SW |
594 | } |
595 | ||
8974eebd YZ |
596 | /* |
597 | * discard buffered readdir content on seekdir(0), or seek to new frag, | |
598 | * or seek prior to current chunk | |
599 | */ | |
bb48bd4d | 600 | static bool need_reset_readdir(struct ceph_dir_file_info *dfi, loff_t new_pos) |
8974eebd YZ |
601 | { |
602 | struct ceph_mds_reply_info_parsed *rinfo; | |
f3c4ebe6 | 603 | loff_t chunk_offset; |
8974eebd YZ |
604 | if (new_pos == 0) |
605 | return true; | |
f3c4ebe6 YZ |
606 | if (is_hash_order(new_pos)) { |
607 | /* no need to reset last_name for a forward seek when | |
608 | * dentries are sotred in hash order */ | |
bb48bd4d | 609 | } else if (dfi->frag != fpos_frag(new_pos)) { |
8974eebd | 610 | return true; |
f3c4ebe6 | 611 | } |
bb48bd4d | 612 | rinfo = dfi->last_readdir ? &dfi->last_readdir->r_reply_info : NULL; |
8974eebd YZ |
613 | if (!rinfo || !rinfo->dir_nr) |
614 | return true; | |
f3c4ebe6 YZ |
615 | chunk_offset = rinfo->dir_entries[0].offset; |
616 | return new_pos < chunk_offset || | |
617 | is_hash_order(new_pos) != is_hash_order(chunk_offset); | |
8974eebd YZ |
618 | } |
619 | ||
965c8e59 | 620 | static loff_t ceph_dir_llseek(struct file *file, loff_t offset, int whence) |
2817b000 | 621 | { |
bb48bd4d | 622 | struct ceph_dir_file_info *dfi = file->private_data; |
2817b000 | 623 | struct inode *inode = file->f_mapping->host; |
2817b000 SW |
624 | loff_t retval; |
625 | ||
5955102c | 626 | inode_lock(inode); |
06222e49 | 627 | retval = -EINVAL; |
965c8e59 | 628 | switch (whence) { |
2817b000 SW |
629 | case SEEK_CUR: |
630 | offset += file->f_pos; | |
06222e49 JB |
631 | case SEEK_SET: |
632 | break; | |
fdd4e158 YZ |
633 | case SEEK_END: |
634 | retval = -EOPNOTSUPP; | |
06222e49 JB |
635 | default: |
636 | goto out; | |
2817b000 | 637 | } |
06222e49 | 638 | |
f0494206 | 639 | if (offset >= 0) { |
bb48bd4d | 640 | if (need_reset_readdir(dfi, offset)) { |
f3c4ebe6 | 641 | dout("dir_llseek dropping %p content\n", file); |
bb48bd4d | 642 | reset_readdir(dfi); |
f3c4ebe6 YZ |
643 | } else if (is_hash_order(offset) && offset > file->f_pos) { |
644 | /* for hash offset, we don't know if a forward seek | |
645 | * is within same frag */ | |
bb48bd4d CX |
646 | dfi->dir_release_count = 0; |
647 | dfi->readdir_cache_idx = -1; | |
f3c4ebe6 YZ |
648 | } |
649 | ||
2817b000 SW |
650 | if (offset != file->f_pos) { |
651 | file->f_pos = offset; | |
652 | file->f_version = 0; | |
bb48bd4d | 653 | dfi->file_info.flags &= ~CEPH_F_ATEND; |
2817b000 SW |
654 | } |
655 | retval = offset; | |
2817b000 | 656 | } |
06222e49 | 657 | out: |
5955102c | 658 | inode_unlock(inode); |
2817b000 SW |
659 | return retval; |
660 | } | |
661 | ||
662 | /* | |
468640e3 | 663 | * Handle lookups for the hidden .snap directory. |
2817b000 | 664 | */ |
468640e3 SW |
665 | int ceph_handle_snapdir(struct ceph_mds_request *req, |
666 | struct dentry *dentry, int err) | |
2817b000 | 667 | { |
3d14c5d2 | 668 | struct ceph_fs_client *fsc = ceph_sb_to_client(dentry->d_sb); |
2b0143b5 | 669 | struct inode *parent = d_inode(dentry->d_parent); /* we hold i_mutex */ |
2817b000 SW |
670 | |
671 | /* .snap dir? */ | |
672 | if (err == -ENOENT && | |
455cec0a | 673 | ceph_snap(parent) == CEPH_NOSNAP && |
6b805185 | 674 | strcmp(dentry->d_name.name, |
3d14c5d2 | 675 | fsc->mount_options->snapdir_name) == 0) { |
2817b000 | 676 | struct inode *inode = ceph_get_snapdir(parent); |
a455589f AV |
677 | dout("ENOENT on snapdir %p '%pd', linking to snapdir %p\n", |
678 | dentry, dentry, inode); | |
9358c6d4 | 679 | BUG_ON(!d_unhashed(dentry)); |
2817b000 SW |
680 | d_add(dentry, inode); |
681 | err = 0; | |
682 | } | |
468640e3 SW |
683 | return err; |
684 | } | |
2817b000 | 685 | |
468640e3 SW |
686 | /* |
687 | * Figure out final result of a lookup/open request. | |
688 | * | |
689 | * Mainly, make sure we return the final req->r_dentry (if it already | |
690 | * existed) in place of the original VFS-provided dentry when they | |
691 | * differ. | |
692 | * | |
693 | * Gracefully handle the case where the MDS replies with -ENOENT and | |
694 | * no trace (which it may do, at its discretion, e.g., if it doesn't | |
695 | * care to issue a lease on the negative dentry). | |
696 | */ | |
697 | struct dentry *ceph_finish_lookup(struct ceph_mds_request *req, | |
698 | struct dentry *dentry, int err) | |
699 | { | |
2817b000 SW |
700 | if (err == -ENOENT) { |
701 | /* no trace? */ | |
702 | err = 0; | |
703 | if (!req->r_reply_info.head->is_dentry) { | |
704 | dout("ENOENT and no trace, dentry %p inode %p\n", | |
2b0143b5 DH |
705 | dentry, d_inode(dentry)); |
706 | if (d_really_is_positive(dentry)) { | |
2817b000 SW |
707 | d_drop(dentry); |
708 | err = -ENOENT; | |
709 | } else { | |
710 | d_add(dentry, NULL); | |
711 | } | |
712 | } | |
713 | } | |
714 | if (err) | |
715 | dentry = ERR_PTR(err); | |
716 | else if (dentry != req->r_dentry) | |
717 | dentry = dget(req->r_dentry); /* we got spliced */ | |
718 | else | |
719 | dentry = NULL; | |
720 | return dentry; | |
721 | } | |
722 | ||
3b33f692 | 723 | static bool is_root_ceph_dentry(struct inode *inode, struct dentry *dentry) |
1d1de916 SW |
724 | { |
725 | return ceph_ino(inode) == CEPH_INO_ROOT && | |
726 | strncmp(dentry->d_name.name, ".ceph", 5) == 0; | |
727 | } | |
728 | ||
2817b000 SW |
729 | /* |
730 | * Look up a single dir entry. If there is a lookup intent, inform | |
731 | * the MDS so that it gets our 'caps wanted' value in a single op. | |
732 | */ | |
733 | static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry, | |
00cd8dd3 | 734 | unsigned int flags) |
2817b000 | 735 | { |
3d14c5d2 YS |
736 | struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb); |
737 | struct ceph_mds_client *mdsc = fsc->mdsc; | |
2817b000 SW |
738 | struct ceph_mds_request *req; |
739 | int op; | |
315f2408 | 740 | int mask; |
2817b000 SW |
741 | int err; |
742 | ||
a455589f AV |
743 | dout("lookup %p dentry %p '%pd'\n", |
744 | dir, dentry, dentry); | |
2817b000 SW |
745 | |
746 | if (dentry->d_name.len > NAME_MAX) | |
747 | return ERR_PTR(-ENAMETOOLONG); | |
748 | ||
2817b000 | 749 | /* can we conclude ENOENT locally? */ |
2b0143b5 | 750 | if (d_really_is_negative(dentry)) { |
2817b000 SW |
751 | struct ceph_inode_info *ci = ceph_inode(dir); |
752 | struct ceph_dentry_info *di = ceph_dentry(dentry); | |
753 | ||
be655596 | 754 | spin_lock(&ci->i_ceph_lock); |
2817b000 SW |
755 | dout(" dir %p flags are %d\n", dir, ci->i_ceph_flags); |
756 | if (strncmp(dentry->d_name.name, | |
3d14c5d2 | 757 | fsc->mount_options->snapdir_name, |
2817b000 | 758 | dentry->d_name.len) && |
1d1de916 | 759 | !is_root_ceph_dentry(dir, dentry) && |
e2c3de04 | 760 | ceph_test_mount_opt(fsc, DCACHE) && |
2f276c51 | 761 | __ceph_dir_is_complete(ci) && |
2817b000 | 762 | (__ceph_caps_issued_mask(ci, CEPH_CAP_FILE_SHARED, 1))) { |
be655596 | 763 | spin_unlock(&ci->i_ceph_lock); |
2817b000 SW |
764 | dout(" dir %p complete, -ENOENT\n", dir); |
765 | d_add(dentry, NULL); | |
97aeb6bf | 766 | di->lease_shared_gen = atomic_read(&ci->i_shared_gen); |
2817b000 SW |
767 | return NULL; |
768 | } | |
be655596 | 769 | spin_unlock(&ci->i_ceph_lock); |
2817b000 SW |
770 | } |
771 | ||
772 | op = ceph_snap(dir) == CEPH_SNAPDIR ? | |
773 | CEPH_MDS_OP_LOOKUPSNAP : CEPH_MDS_OP_LOOKUP; | |
774 | req = ceph_mdsc_create_request(mdsc, op, USE_ANY_MDS); | |
775 | if (IS_ERR(req)) | |
7e34bc52 | 776 | return ERR_CAST(req); |
2817b000 SW |
777 | req->r_dentry = dget(dentry); |
778 | req->r_num_caps = 2; | |
315f2408 YZ |
779 | |
780 | mask = CEPH_STAT_CAP_INODE | CEPH_CAP_AUTH_SHARED; | |
781 | if (ceph_security_xattr_wanted(dir)) | |
782 | mask |= CEPH_CAP_XATTR_SHARED; | |
783 | req->r_args.getattr.mask = cpu_to_le32(mask); | |
784 | ||
3dd69aab JL |
785 | req->r_parent = dir; |
786 | set_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags); | |
2817b000 | 787 | err = ceph_mdsc_do_request(mdsc, NULL, req); |
468640e3 | 788 | err = ceph_handle_snapdir(req, dentry, err); |
2817b000 SW |
789 | dentry = ceph_finish_lookup(req, dentry, err); |
790 | ceph_mdsc_put_request(req); /* will dput(dentry) */ | |
791 | dout("lookup result=%p\n", dentry); | |
792 | return dentry; | |
793 | } | |
794 | ||
795 | /* | |
796 | * If we do a create but get no trace back from the MDS, follow up with | |
797 | * a lookup (the VFS expects us to link up the provided dentry). | |
798 | */ | |
799 | int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry) | |
800 | { | |
00cd8dd3 | 801 | struct dentry *result = ceph_lookup(dir, dentry, 0); |
2817b000 SW |
802 | |
803 | if (result && !IS_ERR(result)) { | |
804 | /* | |
805 | * We created the item, then did a lookup, and found | |
806 | * it was already linked to another inode we already | |
4d41cef2 YZ |
807 | * had in our cache (and thus got spliced). To not |
808 | * confuse VFS (especially when inode is a directory), | |
809 | * we don't link our dentry to that inode, return an | |
810 | * error instead. | |
811 | * | |
812 | * This event should be rare and it happens only when | |
813 | * we talk to old MDS. Recent MDS does not send traceless | |
814 | * reply for request that creates new inode. | |
2817b000 | 815 | */ |
5cba372c | 816 | d_drop(result); |
4d41cef2 | 817 | return -ESTALE; |
2817b000 SW |
818 | } |
819 | return PTR_ERR(result); | |
820 | } | |
821 | ||
822 | static int ceph_mknod(struct inode *dir, struct dentry *dentry, | |
1a67aafb | 823 | umode_t mode, dev_t rdev) |
2817b000 | 824 | { |
3d14c5d2 YS |
825 | struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb); |
826 | struct ceph_mds_client *mdsc = fsc->mdsc; | |
2817b000 | 827 | struct ceph_mds_request *req; |
5c31e92d | 828 | struct ceph_acl_sec_ctx as_ctx = {}; |
2817b000 SW |
829 | int err; |
830 | ||
831 | if (ceph_snap(dir) != CEPH_NOSNAP) | |
832 | return -EROFS; | |
833 | ||
0459871c CX |
834 | if (ceph_quota_is_max_files_exceeded(dir)) { |
835 | err = -EDQUOT; | |
836 | goto out; | |
837 | } | |
b7a29217 | 838 | |
5c31e92d | 839 | err = ceph_pre_init_acls(dir, &mode, &as_ctx); |
ac6713cc YZ |
840 | if (err < 0) |
841 | goto out; | |
842 | err = ceph_security_init_secctx(dentry, mode, &as_ctx); | |
b1ee94aa | 843 | if (err < 0) |
0459871c | 844 | goto out; |
b1ee94aa | 845 | |
1a67aafb | 846 | dout("mknod in dir %p dentry %p mode 0%ho rdev %d\n", |
2817b000 SW |
847 | dir, dentry, mode, rdev); |
848 | req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_MKNOD, USE_AUTH_MDS); | |
849 | if (IS_ERR(req)) { | |
b1ee94aa YZ |
850 | err = PTR_ERR(req); |
851 | goto out; | |
2817b000 SW |
852 | } |
853 | req->r_dentry = dget(dentry); | |
854 | req->r_num_caps = 2; | |
3dd69aab JL |
855 | req->r_parent = dir; |
856 | set_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags); | |
2817b000 SW |
857 | req->r_args.mknod.mode = cpu_to_le32(mode); |
858 | req->r_args.mknod.rdev = cpu_to_le32(rdev); | |
222b7f90 | 859 | req->r_dentry_drop = CEPH_CAP_FILE_SHARED | CEPH_CAP_AUTH_EXCL; |
2817b000 | 860 | req->r_dentry_unless = CEPH_CAP_FILE_EXCL; |
5c31e92d YZ |
861 | if (as_ctx.pagelist) { |
862 | req->r_pagelist = as_ctx.pagelist; | |
863 | as_ctx.pagelist = NULL; | |
b1ee94aa | 864 | } |
2817b000 SW |
865 | err = ceph_mdsc_do_request(mdsc, dir, req); |
866 | if (!err && !req->r_reply_info.head->is_dentry) | |
867 | err = ceph_handle_notrace_create(dir, dentry); | |
868 | ceph_mdsc_put_request(req); | |
b1ee94aa | 869 | out: |
7221fe4c | 870 | if (!err) |
5c31e92d | 871 | ceph_init_inode_acls(d_inode(dentry), &as_ctx); |
b20a95a0 | 872 | else |
2817b000 | 873 | d_drop(dentry); |
5c31e92d | 874 | ceph_release_acl_sec_ctx(&as_ctx); |
2817b000 SW |
875 | return err; |
876 | } | |
877 | ||
4acdaf27 | 878 | static int ceph_create(struct inode *dir, struct dentry *dentry, umode_t mode, |
ebfc3b49 | 879 | bool excl) |
2817b000 | 880 | { |
2d83bde9 | 881 | return ceph_mknod(dir, dentry, mode, 0); |
2817b000 SW |
882 | } |
883 | ||
884 | static int ceph_symlink(struct inode *dir, struct dentry *dentry, | |
885 | const char *dest) | |
886 | { | |
3d14c5d2 YS |
887 | struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb); |
888 | struct ceph_mds_client *mdsc = fsc->mdsc; | |
2817b000 | 889 | struct ceph_mds_request *req; |
ac6713cc | 890 | struct ceph_acl_sec_ctx as_ctx = {}; |
2817b000 SW |
891 | int err; |
892 | ||
893 | if (ceph_snap(dir) != CEPH_NOSNAP) | |
894 | return -EROFS; | |
895 | ||
67fcd151 CX |
896 | if (ceph_quota_is_max_files_exceeded(dir)) { |
897 | err = -EDQUOT; | |
898 | goto out; | |
899 | } | |
b7a29217 | 900 | |
ac6713cc YZ |
901 | err = ceph_security_init_secctx(dentry, S_IFLNK | 0777, &as_ctx); |
902 | if (err < 0) | |
903 | goto out; | |
904 | ||
2817b000 SW |
905 | dout("symlink in dir %p dentry %p to '%s'\n", dir, dentry, dest); |
906 | req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SYMLINK, USE_AUTH_MDS); | |
907 | if (IS_ERR(req)) { | |
b1ee94aa YZ |
908 | err = PTR_ERR(req); |
909 | goto out; | |
2817b000 | 910 | } |
687265e5 | 911 | req->r_path2 = kstrdup(dest, GFP_KERNEL); |
a149bb9a SK |
912 | if (!req->r_path2) { |
913 | err = -ENOMEM; | |
914 | ceph_mdsc_put_request(req); | |
915 | goto out; | |
916 | } | |
3dd69aab JL |
917 | req->r_parent = dir; |
918 | set_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags); | |
a149bb9a SK |
919 | req->r_dentry = dget(dentry); |
920 | req->r_num_caps = 2; | |
222b7f90 | 921 | req->r_dentry_drop = CEPH_CAP_FILE_SHARED | CEPH_CAP_AUTH_EXCL; |
2817b000 SW |
922 | req->r_dentry_unless = CEPH_CAP_FILE_EXCL; |
923 | err = ceph_mdsc_do_request(mdsc, dir, req); | |
924 | if (!err && !req->r_reply_info.head->is_dentry) | |
925 | err = ceph_handle_notrace_create(dir, dentry); | |
926 | ceph_mdsc_put_request(req); | |
b1ee94aa YZ |
927 | out: |
928 | if (err) | |
2817b000 | 929 | d_drop(dentry); |
ac6713cc | 930 | ceph_release_acl_sec_ctx(&as_ctx); |
2817b000 SW |
931 | return err; |
932 | } | |
933 | ||
18bb1db3 | 934 | static int ceph_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
2817b000 | 935 | { |
3d14c5d2 YS |
936 | struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb); |
937 | struct ceph_mds_client *mdsc = fsc->mdsc; | |
2817b000 | 938 | struct ceph_mds_request *req; |
5c31e92d | 939 | struct ceph_acl_sec_ctx as_ctx = {}; |
2817b000 SW |
940 | int err = -EROFS; |
941 | int op; | |
942 | ||
943 | if (ceph_snap(dir) == CEPH_SNAPDIR) { | |
944 | /* mkdir .snap/foo is a MKSNAP */ | |
945 | op = CEPH_MDS_OP_MKSNAP; | |
a455589f AV |
946 | dout("mksnap dir %p snap '%pd' dn %p\n", dir, |
947 | dentry, dentry); | |
2817b000 | 948 | } else if (ceph_snap(dir) == CEPH_NOSNAP) { |
18bb1db3 | 949 | dout("mkdir dir %p dn %p mode 0%ho\n", dir, dentry, mode); |
2817b000 SW |
950 | op = CEPH_MDS_OP_MKDIR; |
951 | } else { | |
952 | goto out; | |
953 | } | |
b1ee94aa | 954 | |
25963669 YZ |
955 | if (op == CEPH_MDS_OP_MKDIR && |
956 | ceph_quota_is_max_files_exceeded(dir)) { | |
b7a29217 LH |
957 | err = -EDQUOT; |
958 | goto out; | |
959 | } | |
960 | ||
b1ee94aa | 961 | mode |= S_IFDIR; |
5c31e92d | 962 | err = ceph_pre_init_acls(dir, &mode, &as_ctx); |
ac6713cc YZ |
963 | if (err < 0) |
964 | goto out; | |
965 | err = ceph_security_init_secctx(dentry, mode, &as_ctx); | |
b1ee94aa YZ |
966 | if (err < 0) |
967 | goto out; | |
968 | ||
2817b000 SW |
969 | req = ceph_mdsc_create_request(mdsc, op, USE_AUTH_MDS); |
970 | if (IS_ERR(req)) { | |
971 | err = PTR_ERR(req); | |
972 | goto out; | |
973 | } | |
974 | ||
975 | req->r_dentry = dget(dentry); | |
976 | req->r_num_caps = 2; | |
3dd69aab JL |
977 | req->r_parent = dir; |
978 | set_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags); | |
2817b000 | 979 | req->r_args.mkdir.mode = cpu_to_le32(mode); |
222b7f90 | 980 | req->r_dentry_drop = CEPH_CAP_FILE_SHARED | CEPH_CAP_AUTH_EXCL; |
2817b000 | 981 | req->r_dentry_unless = CEPH_CAP_FILE_EXCL; |
5c31e92d YZ |
982 | if (as_ctx.pagelist) { |
983 | req->r_pagelist = as_ctx.pagelist; | |
984 | as_ctx.pagelist = NULL; | |
b1ee94aa | 985 | } |
2817b000 | 986 | err = ceph_mdsc_do_request(mdsc, dir, req); |
275dd19e YZ |
987 | if (!err && |
988 | !req->r_reply_info.head->is_target && | |
989 | !req->r_reply_info.head->is_dentry) | |
2817b000 SW |
990 | err = ceph_handle_notrace_create(dir, dentry); |
991 | ceph_mdsc_put_request(req); | |
992 | out: | |
b20a95a0 | 993 | if (!err) |
5c31e92d | 994 | ceph_init_inode_acls(d_inode(dentry), &as_ctx); |
b20a95a0 | 995 | else |
2817b000 | 996 | d_drop(dentry); |
5c31e92d | 997 | ceph_release_acl_sec_ctx(&as_ctx); |
2817b000 SW |
998 | return err; |
999 | } | |
1000 | ||
1001 | static int ceph_link(struct dentry *old_dentry, struct inode *dir, | |
1002 | struct dentry *dentry) | |
1003 | { | |
3d14c5d2 YS |
1004 | struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb); |
1005 | struct ceph_mds_client *mdsc = fsc->mdsc; | |
2817b000 SW |
1006 | struct ceph_mds_request *req; |
1007 | int err; | |
1008 | ||
1009 | if (ceph_snap(dir) != CEPH_NOSNAP) | |
1010 | return -EROFS; | |
1011 | ||
1012 | dout("link in dir %p old_dentry %p dentry %p\n", dir, | |
1013 | old_dentry, dentry); | |
1014 | req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_LINK, USE_AUTH_MDS); | |
1015 | if (IS_ERR(req)) { | |
1016 | d_drop(dentry); | |
1017 | return PTR_ERR(req); | |
1018 | } | |
1019 | req->r_dentry = dget(dentry); | |
1020 | req->r_num_caps = 2; | |
4b58c9b1 | 1021 | req->r_old_dentry = dget(old_dentry); |
3dd69aab JL |
1022 | req->r_parent = dir; |
1023 | set_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags); | |
2817b000 SW |
1024 | req->r_dentry_drop = CEPH_CAP_FILE_SHARED; |
1025 | req->r_dentry_unless = CEPH_CAP_FILE_EXCL; | |
ad88f23f | 1026 | /* release LINK_SHARED on source inode (mds will lock it) */ |
d19a0b54 | 1027 | req->r_old_inode_drop = CEPH_CAP_LINK_SHARED | CEPH_CAP_LINK_EXCL; |
2817b000 | 1028 | err = ceph_mdsc_do_request(mdsc, dir, req); |
70b666c3 | 1029 | if (err) { |
2817b000 | 1030 | d_drop(dentry); |
70b666c3 | 1031 | } else if (!req->r_reply_info.head->is_dentry) { |
2b0143b5 DH |
1032 | ihold(d_inode(old_dentry)); |
1033 | d_instantiate(dentry, d_inode(old_dentry)); | |
70b666c3 | 1034 | } |
2817b000 SW |
1035 | ceph_mdsc_put_request(req); |
1036 | return err; | |
1037 | } | |
1038 | ||
2817b000 SW |
1039 | /* |
1040 | * rmdir and unlink are differ only by the metadata op code | |
1041 | */ | |
1042 | static int ceph_unlink(struct inode *dir, struct dentry *dentry) | |
1043 | { | |
3d14c5d2 YS |
1044 | struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb); |
1045 | struct ceph_mds_client *mdsc = fsc->mdsc; | |
2b0143b5 | 1046 | struct inode *inode = d_inode(dentry); |
2817b000 SW |
1047 | struct ceph_mds_request *req; |
1048 | int err = -EROFS; | |
1049 | int op; | |
1050 | ||
1051 | if (ceph_snap(dir) == CEPH_SNAPDIR) { | |
1052 | /* rmdir .snap/foo is RMSNAP */ | |
a455589f | 1053 | dout("rmsnap dir %p '%pd' dn %p\n", dir, dentry, dentry); |
2817b000 SW |
1054 | op = CEPH_MDS_OP_RMSNAP; |
1055 | } else if (ceph_snap(dir) == CEPH_NOSNAP) { | |
1056 | dout("unlink/rmdir dir %p dn %p inode %p\n", | |
1057 | dir, dentry, inode); | |
e36cb0b8 | 1058 | op = d_is_dir(dentry) ? |
2817b000 SW |
1059 | CEPH_MDS_OP_RMDIR : CEPH_MDS_OP_UNLINK; |
1060 | } else | |
1061 | goto out; | |
1062 | req = ceph_mdsc_create_request(mdsc, op, USE_AUTH_MDS); | |
1063 | if (IS_ERR(req)) { | |
1064 | err = PTR_ERR(req); | |
1065 | goto out; | |
1066 | } | |
1067 | req->r_dentry = dget(dentry); | |
1068 | req->r_num_caps = 2; | |
3dd69aab JL |
1069 | req->r_parent = dir; |
1070 | set_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags); | |
2817b000 SW |
1071 | req->r_dentry_drop = CEPH_CAP_FILE_SHARED; |
1072 | req->r_dentry_unless = CEPH_CAP_FILE_EXCL; | |
6ef0bc6d | 1073 | req->r_inode_drop = ceph_drop_caps_for_unlink(inode); |
2817b000 SW |
1074 | err = ceph_mdsc_do_request(mdsc, dir, req); |
1075 | if (!err && !req->r_reply_info.head->is_dentry) | |
1076 | d_delete(dentry); | |
1077 | ceph_mdsc_put_request(req); | |
1078 | out: | |
1079 | return err; | |
1080 | } | |
1081 | ||
1082 | static int ceph_rename(struct inode *old_dir, struct dentry *old_dentry, | |
1cd66c93 MS |
1083 | struct inode *new_dir, struct dentry *new_dentry, |
1084 | unsigned int flags) | |
2817b000 | 1085 | { |
3d14c5d2 YS |
1086 | struct ceph_fs_client *fsc = ceph_sb_to_client(old_dir->i_sb); |
1087 | struct ceph_mds_client *mdsc = fsc->mdsc; | |
2817b000 | 1088 | struct ceph_mds_request *req; |
0ea611a3 | 1089 | int op = CEPH_MDS_OP_RENAME; |
2817b000 SW |
1090 | int err; |
1091 | ||
1cd66c93 MS |
1092 | if (flags) |
1093 | return -EINVAL; | |
1094 | ||
2817b000 SW |
1095 | if (ceph_snap(old_dir) != ceph_snap(new_dir)) |
1096 | return -EXDEV; | |
0ea611a3 YZ |
1097 | if (ceph_snap(old_dir) != CEPH_NOSNAP) { |
1098 | if (old_dir == new_dir && ceph_snap(old_dir) == CEPH_SNAPDIR) | |
1099 | op = CEPH_MDS_OP_RENAMESNAP; | |
1100 | else | |
1101 | return -EROFS; | |
1102 | } | |
cafe21a4 LH |
1103 | /* don't allow cross-quota renames */ |
1104 | if ((old_dir != new_dir) && | |
1105 | (!ceph_quota_is_same_realm(old_dir, new_dir))) | |
1106 | return -EXDEV; | |
1107 | ||
2817b000 SW |
1108 | dout("rename dir %p dentry %p to dir %p dentry %p\n", |
1109 | old_dir, old_dentry, new_dir, new_dentry); | |
0ea611a3 | 1110 | req = ceph_mdsc_create_request(mdsc, op, USE_AUTH_MDS); |
2817b000 SW |
1111 | if (IS_ERR(req)) |
1112 | return PTR_ERR(req); | |
180061a5 | 1113 | ihold(old_dir); |
2817b000 SW |
1114 | req->r_dentry = dget(new_dentry); |
1115 | req->r_num_caps = 2; | |
1116 | req->r_old_dentry = dget(old_dentry); | |
180061a5 | 1117 | req->r_old_dentry_dir = old_dir; |
3dd69aab JL |
1118 | req->r_parent = new_dir; |
1119 | set_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags); | |
2817b000 SW |
1120 | req->r_old_dentry_drop = CEPH_CAP_FILE_SHARED; |
1121 | req->r_old_dentry_unless = CEPH_CAP_FILE_EXCL; | |
1122 | req->r_dentry_drop = CEPH_CAP_FILE_SHARED; | |
1123 | req->r_dentry_unless = CEPH_CAP_FILE_EXCL; | |
1124 | /* release LINK_RDCACHE on source inode (mds will lock it) */ | |
d19a0b54 | 1125 | req->r_old_inode_drop = CEPH_CAP_LINK_SHARED | CEPH_CAP_LINK_EXCL; |
6ef0bc6d ZZ |
1126 | if (d_really_is_positive(new_dentry)) { |
1127 | req->r_inode_drop = | |
1128 | ceph_drop_caps_for_unlink(d_inode(new_dentry)); | |
1129 | } | |
2817b000 SW |
1130 | err = ceph_mdsc_do_request(mdsc, old_dir, req); |
1131 | if (!err && !req->r_reply_info.head->is_dentry) { | |
1132 | /* | |
1133 | * Normally d_move() is done by fill_trace (called by | |
1134 | * do_request, above). If there is no trace, we need | |
1135 | * to do it here. | |
1136 | */ | |
1137 | d_move(old_dentry, new_dentry); | |
1138 | } | |
1139 | ceph_mdsc_put_request(req); | |
1140 | return err; | |
1141 | } | |
1142 | ||
37c4efc1 YZ |
1143 | /* |
1144 | * Move dentry to tail of mdsc->dentry_leases list when lease is updated. | |
1145 | * Leases at front of the list will expire first. (Assume all leases have | |
1146 | * similar duration) | |
1147 | * | |
1148 | * Called under dentry->d_lock. | |
1149 | */ | |
1150 | void __ceph_dentry_lease_touch(struct ceph_dentry_info *di) | |
1151 | { | |
1152 | struct dentry *dn = di->dentry; | |
1153 | struct ceph_mds_client *mdsc; | |
1154 | ||
1155 | dout("dentry_lease_touch %p %p '%pd'\n", di, dn, dn); | |
1156 | ||
1157 | di->flags |= CEPH_DENTRY_LEASE_LIST; | |
1158 | if (di->flags & CEPH_DENTRY_SHRINK_LIST) { | |
1159 | di->flags |= CEPH_DENTRY_REFERENCED; | |
1160 | return; | |
1161 | } | |
1162 | ||
1163 | mdsc = ceph_sb_to_client(dn->d_sb)->mdsc; | |
1164 | spin_lock(&mdsc->dentry_list_lock); | |
1165 | list_move_tail(&di->lease_list, &mdsc->dentry_leases); | |
1166 | spin_unlock(&mdsc->dentry_list_lock); | |
1167 | } | |
1168 | ||
1169 | static void __dentry_dir_lease_touch(struct ceph_mds_client* mdsc, | |
1170 | struct ceph_dentry_info *di) | |
1171 | { | |
1172 | di->flags &= ~(CEPH_DENTRY_LEASE_LIST | CEPH_DENTRY_REFERENCED); | |
1173 | di->lease_gen = 0; | |
1174 | di->time = jiffies; | |
1175 | list_move_tail(&di->lease_list, &mdsc->dentry_dir_leases); | |
1176 | } | |
1177 | ||
1178 | /* | |
1179 | * When dir lease is used, add dentry to tail of mdsc->dentry_dir_leases | |
1180 | * list if it's not in the list, otherwise set 'referenced' flag. | |
1181 | * | |
1182 | * Called under dentry->d_lock. | |
1183 | */ | |
1184 | void __ceph_dentry_dir_lease_touch(struct ceph_dentry_info *di) | |
1185 | { | |
1186 | struct dentry *dn = di->dentry; | |
1187 | struct ceph_mds_client *mdsc; | |
1188 | ||
0eb30853 | 1189 | dout("dentry_dir_lease_touch %p %p '%pd' (offset 0x%llx)\n", |
37c4efc1 YZ |
1190 | di, dn, dn, di->offset); |
1191 | ||
1192 | if (!list_empty(&di->lease_list)) { | |
1193 | if (di->flags & CEPH_DENTRY_LEASE_LIST) { | |
1194 | /* don't remove dentry from dentry lease list | |
1195 | * if its lease is valid */ | |
1196 | if (__dentry_lease_is_valid(di)) | |
1197 | return; | |
1198 | } else { | |
1199 | di->flags |= CEPH_DENTRY_REFERENCED; | |
1200 | return; | |
1201 | } | |
1202 | } | |
1203 | ||
1204 | if (di->flags & CEPH_DENTRY_SHRINK_LIST) { | |
1205 | di->flags |= CEPH_DENTRY_REFERENCED; | |
1206 | di->flags &= ~CEPH_DENTRY_LEASE_LIST; | |
1207 | return; | |
1208 | } | |
1209 | ||
1210 | mdsc = ceph_sb_to_client(dn->d_sb)->mdsc; | |
1211 | spin_lock(&mdsc->dentry_list_lock); | |
1212 | __dentry_dir_lease_touch(mdsc, di), | |
1213 | spin_unlock(&mdsc->dentry_list_lock); | |
1214 | } | |
1215 | ||
1216 | static void __dentry_lease_unlist(struct ceph_dentry_info *di) | |
1217 | { | |
1218 | struct ceph_mds_client *mdsc; | |
1219 | if (di->flags & CEPH_DENTRY_SHRINK_LIST) | |
1220 | return; | |
1221 | if (list_empty(&di->lease_list)) | |
1222 | return; | |
1223 | ||
1224 | mdsc = ceph_sb_to_client(di->dentry->d_sb)->mdsc; | |
1225 | spin_lock(&mdsc->dentry_list_lock); | |
1226 | list_del_init(&di->lease_list); | |
1227 | spin_unlock(&mdsc->dentry_list_lock); | |
1228 | } | |
1229 | ||
1230 | enum { | |
1231 | KEEP = 0, | |
1232 | DELETE = 1, | |
1233 | TOUCH = 2, | |
1234 | STOP = 4, | |
1235 | }; | |
1236 | ||
1237 | struct ceph_lease_walk_control { | |
1238 | bool dir_lease; | |
fe33032d | 1239 | bool expire_dir_lease; |
37c4efc1 YZ |
1240 | unsigned long nr_to_scan; |
1241 | unsigned long dir_lease_ttl; | |
1242 | }; | |
1243 | ||
1244 | static unsigned long | |
1245 | __dentry_leases_walk(struct ceph_mds_client *mdsc, | |
1246 | struct ceph_lease_walk_control *lwc, | |
1247 | int (*check)(struct dentry*, void*)) | |
1248 | { | |
1249 | struct ceph_dentry_info *di, *tmp; | |
1250 | struct dentry *dentry, *last = NULL; | |
1251 | struct list_head* list; | |
1252 | LIST_HEAD(dispose); | |
1253 | unsigned long freed = 0; | |
1254 | int ret = 0; | |
1255 | ||
1256 | list = lwc->dir_lease ? &mdsc->dentry_dir_leases : &mdsc->dentry_leases; | |
1257 | spin_lock(&mdsc->dentry_list_lock); | |
1258 | list_for_each_entry_safe(di, tmp, list, lease_list) { | |
1259 | if (!lwc->nr_to_scan) | |
1260 | break; | |
1261 | --lwc->nr_to_scan; | |
1262 | ||
1263 | dentry = di->dentry; | |
1264 | if (last == dentry) | |
1265 | break; | |
1266 | ||
1267 | if (!spin_trylock(&dentry->d_lock)) | |
1268 | continue; | |
1269 | ||
516162b9 | 1270 | if (__lockref_is_dead(&dentry->d_lockref)) { |
37c4efc1 YZ |
1271 | list_del_init(&di->lease_list); |
1272 | goto next; | |
1273 | } | |
1274 | ||
1275 | ret = check(dentry, lwc); | |
1276 | if (ret & TOUCH) { | |
1277 | /* move it into tail of dir lease list */ | |
1278 | __dentry_dir_lease_touch(mdsc, di); | |
1279 | if (!last) | |
1280 | last = dentry; | |
1281 | } | |
1282 | if (ret & DELETE) { | |
1283 | /* stale lease */ | |
1284 | di->flags &= ~CEPH_DENTRY_REFERENCED; | |
1285 | if (dentry->d_lockref.count > 0) { | |
1286 | /* update_dentry_lease() will re-add | |
1287 | * it to lease list, or | |
1288 | * ceph_d_delete() will return 1 when | |
1289 | * last reference is dropped */ | |
1290 | list_del_init(&di->lease_list); | |
1291 | } else { | |
1292 | di->flags |= CEPH_DENTRY_SHRINK_LIST; | |
1293 | list_move_tail(&di->lease_list, &dispose); | |
1294 | dget_dlock(dentry); | |
1295 | } | |
1296 | } | |
1297 | next: | |
1298 | spin_unlock(&dentry->d_lock); | |
1299 | if (ret & STOP) | |
1300 | break; | |
1301 | } | |
1302 | spin_unlock(&mdsc->dentry_list_lock); | |
1303 | ||
1304 | while (!list_empty(&dispose)) { | |
1305 | di = list_first_entry(&dispose, struct ceph_dentry_info, | |
1306 | lease_list); | |
1307 | dentry = di->dentry; | |
1308 | spin_lock(&dentry->d_lock); | |
1309 | ||
1310 | list_del_init(&di->lease_list); | |
1311 | di->flags &= ~CEPH_DENTRY_SHRINK_LIST; | |
1312 | if (di->flags & CEPH_DENTRY_REFERENCED) { | |
1313 | spin_lock(&mdsc->dentry_list_lock); | |
1314 | if (di->flags & CEPH_DENTRY_LEASE_LIST) { | |
1315 | list_add_tail(&di->lease_list, | |
1316 | &mdsc->dentry_leases); | |
1317 | } else { | |
1318 | __dentry_dir_lease_touch(mdsc, di); | |
1319 | } | |
1320 | spin_unlock(&mdsc->dentry_list_lock); | |
1321 | } else { | |
1322 | freed++; | |
1323 | } | |
1324 | ||
1325 | spin_unlock(&dentry->d_lock); | |
1326 | /* ceph_d_delete() does the trick */ | |
1327 | dput(dentry); | |
1328 | } | |
1329 | return freed; | |
1330 | } | |
1331 | ||
1332 | static int __dentry_lease_check(struct dentry *dentry, void *arg) | |
1333 | { | |
1334 | struct ceph_dentry_info *di = ceph_dentry(dentry); | |
1335 | int ret; | |
1336 | ||
1337 | if (__dentry_lease_is_valid(di)) | |
1338 | return STOP; | |
1339 | ret = __dir_lease_try_check(dentry); | |
1340 | if (ret == -EBUSY) | |
1341 | return KEEP; | |
1342 | if (ret > 0) | |
1343 | return TOUCH; | |
1344 | return DELETE; | |
1345 | } | |
1346 | ||
1347 | static int __dir_lease_check(struct dentry *dentry, void *arg) | |
1348 | { | |
1349 | struct ceph_lease_walk_control *lwc = arg; | |
1350 | struct ceph_dentry_info *di = ceph_dentry(dentry); | |
1351 | ||
1352 | int ret = __dir_lease_try_check(dentry); | |
1353 | if (ret == -EBUSY) | |
1354 | return KEEP; | |
1355 | if (ret > 0) { | |
1356 | if (time_before(jiffies, di->time + lwc->dir_lease_ttl)) | |
1357 | return STOP; | |
1358 | /* Move dentry to tail of dir lease list if we don't want | |
1359 | * to delete it. So dentries in the list are checked in a | |
1360 | * round robin manner */ | |
fe33032d YZ |
1361 | if (!lwc->expire_dir_lease) |
1362 | return TOUCH; | |
1363 | if (dentry->d_lockref.count > 0 || | |
1364 | (di->flags & CEPH_DENTRY_REFERENCED)) | |
1365 | return TOUCH; | |
1366 | /* invalidate dir lease */ | |
1367 | di->lease_shared_gen = 0; | |
37c4efc1 YZ |
1368 | } |
1369 | return DELETE; | |
1370 | } | |
1371 | ||
1372 | int ceph_trim_dentries(struct ceph_mds_client *mdsc) | |
1373 | { | |
1374 | struct ceph_lease_walk_control lwc; | |
fe33032d | 1375 | unsigned long count; |
37c4efc1 YZ |
1376 | unsigned long freed; |
1377 | ||
fe33032d YZ |
1378 | spin_lock(&mdsc->caps_list_lock); |
1379 | if (mdsc->caps_use_max > 0 && | |
1380 | mdsc->caps_use_count > mdsc->caps_use_max) | |
1381 | count = mdsc->caps_use_count - mdsc->caps_use_max; | |
1382 | else | |
1383 | count = 0; | |
1384 | spin_unlock(&mdsc->caps_list_lock); | |
1385 | ||
37c4efc1 YZ |
1386 | lwc.dir_lease = false; |
1387 | lwc.nr_to_scan = CEPH_CAPS_PER_RELEASE * 2; | |
1388 | freed = __dentry_leases_walk(mdsc, &lwc, __dentry_lease_check); | |
1389 | if (!lwc.nr_to_scan) /* more invalid leases */ | |
1390 | return -EAGAIN; | |
1391 | ||
1392 | if (lwc.nr_to_scan < CEPH_CAPS_PER_RELEASE) | |
1393 | lwc.nr_to_scan = CEPH_CAPS_PER_RELEASE; | |
1394 | ||
1395 | lwc.dir_lease = true; | |
fe33032d YZ |
1396 | lwc.expire_dir_lease = freed < count; |
1397 | lwc.dir_lease_ttl = mdsc->fsc->mount_options->caps_wanted_delay_max * HZ; | |
37c4efc1 YZ |
1398 | freed +=__dentry_leases_walk(mdsc, &lwc, __dir_lease_check); |
1399 | if (!lwc.nr_to_scan) /* more to check */ | |
1400 | return -EAGAIN; | |
1401 | ||
1402 | return freed > 0 ? 1 : 0; | |
1403 | } | |
1404 | ||
81a6cf2d SW |
1405 | /* |
1406 | * Ensure a dentry lease will no longer revalidate. | |
1407 | */ | |
1408 | void ceph_invalidate_dentry_lease(struct dentry *dentry) | |
1409 | { | |
37c4efc1 | 1410 | struct ceph_dentry_info *di = ceph_dentry(dentry); |
81a6cf2d | 1411 | spin_lock(&dentry->d_lock); |
37c4efc1 YZ |
1412 | di->time = jiffies; |
1413 | di->lease_shared_gen = 0; | |
1414 | __dentry_lease_unlist(di); | |
81a6cf2d SW |
1415 | spin_unlock(&dentry->d_lock); |
1416 | } | |
2817b000 SW |
1417 | |
1418 | /* | |
1419 | * Check if dentry lease is valid. If not, delete the lease. Try to | |
1420 | * renew if the least is more than half up. | |
1421 | */ | |
1e9c2eb6 YZ |
1422 | static bool __dentry_lease_is_valid(struct ceph_dentry_info *di) |
1423 | { | |
1424 | struct ceph_mds_session *session; | |
1425 | ||
1426 | if (!di->lease_gen) | |
1427 | return false; | |
1428 | ||
1429 | session = di->lease_session; | |
1430 | if (session) { | |
1431 | u32 gen; | |
1432 | unsigned long ttl; | |
1433 | ||
1434 | spin_lock(&session->s_gen_ttl_lock); | |
1435 | gen = session->s_cap_gen; | |
1436 | ttl = session->s_cap_ttl; | |
1437 | spin_unlock(&session->s_gen_ttl_lock); | |
1438 | ||
1439 | if (di->lease_gen == gen && | |
1440 | time_before(jiffies, ttl) && | |
1441 | time_before(jiffies, di->time)) | |
1442 | return true; | |
1443 | } | |
1444 | di->lease_gen = 0; | |
1445 | return false; | |
1446 | } | |
1447 | ||
8f2a98ef | 1448 | static int dentry_lease_is_valid(struct dentry *dentry, unsigned int flags) |
2817b000 SW |
1449 | { |
1450 | struct ceph_dentry_info *di; | |
2817b000 | 1451 | struct ceph_mds_session *session = NULL; |
2817b000 | 1452 | u32 seq = 0; |
1e9c2eb6 | 1453 | int valid = 0; |
2817b000 SW |
1454 | |
1455 | spin_lock(&dentry->d_lock); | |
1456 | di = ceph_dentry(dentry); | |
1e9c2eb6 YZ |
1457 | if (di && __dentry_lease_is_valid(di)) { |
1458 | valid = 1; | |
2817b000 | 1459 | |
1e9c2eb6 YZ |
1460 | if (di->lease_renew_after && |
1461 | time_after(jiffies, di->lease_renew_after)) { | |
1462 | /* | |
1463 | * We should renew. If we're in RCU walk mode | |
1464 | * though, we can't do that so just return | |
1465 | * -ECHILD. | |
1466 | */ | |
1467 | if (flags & LOOKUP_RCU) { | |
1468 | valid = -ECHILD; | |
1469 | } else { | |
1470 | session = ceph_get_mds_session(di->lease_session); | |
1471 | seq = di->lease_seq; | |
1472 | di->lease_renew_after = 0; | |
1473 | di->lease_renew_from = jiffies; | |
2817b000 | 1474 | } |
2817b000 SW |
1475 | } |
1476 | } | |
1477 | spin_unlock(&dentry->d_lock); | |
1478 | ||
1479 | if (session) { | |
8f2a98ef | 1480 | ceph_mdsc_lease_send_msg(session, dentry, |
2817b000 SW |
1481 | CEPH_MDS_LEASE_RENEW, seq); |
1482 | ceph_put_mds_session(session); | |
1483 | } | |
1484 | dout("dentry_lease_is_valid - dentry %p = %d\n", dentry, valid); | |
1485 | return valid; | |
1486 | } | |
1487 | ||
1e9c2eb6 YZ |
1488 | /* |
1489 | * Called under dentry->d_lock. | |
1490 | */ | |
1491 | static int __dir_lease_try_check(const struct dentry *dentry) | |
1492 | { | |
1493 | struct ceph_dentry_info *di = ceph_dentry(dentry); | |
1494 | struct inode *dir; | |
1495 | struct ceph_inode_info *ci; | |
1496 | int valid = 0; | |
1497 | ||
1498 | if (!di->lease_shared_gen) | |
1499 | return 0; | |
1500 | if (IS_ROOT(dentry)) | |
1501 | return 0; | |
1502 | ||
1503 | dir = d_inode(dentry->d_parent); | |
1504 | ci = ceph_inode(dir); | |
1505 | ||
1506 | if (spin_trylock(&ci->i_ceph_lock)) { | |
1507 | if (atomic_read(&ci->i_shared_gen) == di->lease_shared_gen && | |
1508 | __ceph_caps_issued_mask(ci, CEPH_CAP_FILE_SHARED, 0)) | |
1509 | valid = 1; | |
1510 | spin_unlock(&ci->i_ceph_lock); | |
1511 | } else { | |
1512 | valid = -EBUSY; | |
1513 | } | |
1514 | ||
1515 | if (!valid) | |
1516 | di->lease_shared_gen = 0; | |
1517 | return valid; | |
1518 | } | |
1519 | ||
2817b000 SW |
1520 | /* |
1521 | * Check if directory-wide content lease/cap is valid. | |
1522 | */ | |
1523 | static int dir_lease_is_valid(struct inode *dir, struct dentry *dentry) | |
1524 | { | |
1525 | struct ceph_inode_info *ci = ceph_inode(dir); | |
feab6ac2 YZ |
1526 | int valid; |
1527 | int shared_gen; | |
2817b000 | 1528 | |
be655596 | 1529 | spin_lock(&ci->i_ceph_lock); |
feab6ac2 YZ |
1530 | valid = __ceph_caps_issued_mask(ci, CEPH_CAP_FILE_SHARED, 1); |
1531 | shared_gen = atomic_read(&ci->i_shared_gen); | |
be655596 | 1532 | spin_unlock(&ci->i_ceph_lock); |
feab6ac2 YZ |
1533 | if (valid) { |
1534 | struct ceph_dentry_info *di; | |
1535 | spin_lock(&dentry->d_lock); | |
1536 | di = ceph_dentry(dentry); | |
1537 | if (dir == d_inode(dentry->d_parent) && | |
1538 | di && di->lease_shared_gen == shared_gen) | |
1539 | __ceph_dentry_dir_lease_touch(di); | |
1540 | else | |
1541 | valid = 0; | |
1542 | spin_unlock(&dentry->d_lock); | |
1543 | } | |
1544 | dout("dir_lease_is_valid dir %p v%u dentry %p = %d\n", | |
1545 | dir, (unsigned)atomic_read(&ci->i_shared_gen), dentry, valid); | |
2817b000 SW |
1546 | return valid; |
1547 | } | |
1548 | ||
1549 | /* | |
1550 | * Check if cached dentry can be trusted. | |
1551 | */ | |
0b728e19 | 1552 | static int ceph_d_revalidate(struct dentry *dentry, unsigned int flags) |
2817b000 | 1553 | { |
bf1c6aca | 1554 | int valid = 0; |
641235d8 | 1555 | struct dentry *parent; |
aa8dd816 | 1556 | struct inode *dir, *inode; |
34286d66 | 1557 | |
f49d1e05 | 1558 | if (flags & LOOKUP_RCU) { |
52953d55 | 1559 | parent = READ_ONCE(dentry->d_parent); |
f49d1e05 JL |
1560 | dir = d_inode_rcu(parent); |
1561 | if (!dir) | |
1562 | return -ECHILD; | |
aa8dd816 | 1563 | inode = d_inode_rcu(dentry); |
f49d1e05 JL |
1564 | } else { |
1565 | parent = dget_parent(dentry); | |
1566 | dir = d_inode(parent); | |
aa8dd816 | 1567 | inode = d_inode(dentry); |
f49d1e05 | 1568 | } |
34286d66 | 1569 | |
0eb30853 | 1570 | dout("d_revalidate %p '%pd' inode %p offset 0x%llx\n", dentry, |
aa8dd816 | 1571 | dentry, inode, ceph_dentry(dentry)->offset); |
2817b000 SW |
1572 | |
1573 | /* always trust cached snapped dentries, snapdir dentry */ | |
1574 | if (ceph_snap(dir) != CEPH_NOSNAP) { | |
a455589f | 1575 | dout("d_revalidate %p '%pd' inode %p is SNAPPED\n", dentry, |
aa8dd816 | 1576 | dentry, inode); |
bf1c6aca | 1577 | valid = 1; |
aa8dd816 | 1578 | } else if (inode && ceph_snap(inode) == CEPH_SNAPDIR) { |
bf1c6aca | 1579 | valid = 1; |
14fb9c9e | 1580 | } else { |
8f2a98ef | 1581 | valid = dentry_lease_is_valid(dentry, flags); |
14fb9c9e JL |
1582 | if (valid == -ECHILD) |
1583 | return valid; | |
1584 | if (valid || dir_lease_is_valid(dir, dentry)) { | |
aa8dd816 AV |
1585 | if (inode) |
1586 | valid = ceph_is_any_caps(inode); | |
14fb9c9e JL |
1587 | else |
1588 | valid = 1; | |
1589 | } | |
2817b000 | 1590 | } |
2817b000 | 1591 | |
200fd27c YZ |
1592 | if (!valid) { |
1593 | struct ceph_mds_client *mdsc = | |
1594 | ceph_sb_to_client(dir->i_sb)->mdsc; | |
1595 | struct ceph_mds_request *req; | |
1097680d JL |
1596 | int op, err; |
1597 | u32 mask; | |
200fd27c | 1598 | |
f49d1e05 JL |
1599 | if (flags & LOOKUP_RCU) |
1600 | return -ECHILD; | |
1601 | ||
200fd27c | 1602 | op = ceph_snap(dir) == CEPH_SNAPDIR ? |
5eb9f604 | 1603 | CEPH_MDS_OP_LOOKUPSNAP : CEPH_MDS_OP_LOOKUP; |
200fd27c YZ |
1604 | req = ceph_mdsc_create_request(mdsc, op, USE_ANY_MDS); |
1605 | if (!IS_ERR(req)) { | |
1606 | req->r_dentry = dget(dentry); | |
5eb9f604 JL |
1607 | req->r_num_caps = 2; |
1608 | req->r_parent = dir; | |
200fd27c YZ |
1609 | |
1610 | mask = CEPH_STAT_CAP_INODE | CEPH_CAP_AUTH_SHARED; | |
1611 | if (ceph_security_xattr_wanted(dir)) | |
1612 | mask |= CEPH_CAP_XATTR_SHARED; | |
1097680d | 1613 | req->r_args.getattr.mask = cpu_to_le32(mask); |
200fd27c | 1614 | |
200fd27c | 1615 | err = ceph_mdsc_do_request(mdsc, NULL, req); |
c3f4688a JL |
1616 | switch (err) { |
1617 | case 0: | |
1618 | if (d_really_is_positive(dentry) && | |
1619 | d_inode(dentry) == req->r_target_inode) | |
1620 | valid = 1; | |
1621 | break; | |
1622 | case -ENOENT: | |
1623 | if (d_really_is_negative(dentry)) | |
1624 | valid = 1; | |
1625 | /* Fallthrough */ | |
1626 | default: | |
1627 | break; | |
200fd27c YZ |
1628 | } |
1629 | ceph_mdsc_put_request(req); | |
1630 | dout("d_revalidate %p lookup result=%d\n", | |
1631 | dentry, err); | |
1632 | } | |
1633 | } | |
1634 | ||
bf1c6aca | 1635 | dout("d_revalidate %p %s\n", dentry, valid ? "valid" : "invalid"); |
37c4efc1 | 1636 | if (!valid) |
9215aeea | 1637 | ceph_dir_clear_complete(dir); |
641235d8 | 1638 | |
f49d1e05 JL |
1639 | if (!(flags & LOOKUP_RCU)) |
1640 | dput(parent); | |
bf1c6aca | 1641 | return valid; |
2817b000 SW |
1642 | } |
1643 | ||
1e9c2eb6 YZ |
1644 | /* |
1645 | * Delete unused dentry that doesn't have valid lease | |
1646 | * | |
1647 | * Called under dentry->d_lock. | |
1648 | */ | |
1649 | static int ceph_d_delete(const struct dentry *dentry) | |
1650 | { | |
1651 | struct ceph_dentry_info *di; | |
1652 | ||
1653 | /* won't release caps */ | |
1654 | if (d_really_is_negative(dentry)) | |
1655 | return 0; | |
1656 | if (ceph_snap(d_inode(dentry)) != CEPH_NOSNAP) | |
1657 | return 0; | |
1658 | /* vaild lease? */ | |
1659 | di = ceph_dentry(dentry); | |
1660 | if (di) { | |
1661 | if (__dentry_lease_is_valid(di)) | |
1662 | return 0; | |
1663 | if (__dir_lease_try_check(dentry)) | |
1664 | return 0; | |
1665 | } | |
1666 | return 1; | |
1667 | } | |
1668 | ||
2817b000 | 1669 | /* |
147851d2 | 1670 | * Release our ceph_dentry_info. |
2817b000 | 1671 | */ |
147851d2 | 1672 | static void ceph_d_release(struct dentry *dentry) |
2817b000 SW |
1673 | { |
1674 | struct ceph_dentry_info *di = ceph_dentry(dentry); | |
2817b000 | 1675 | |
147851d2 | 1676 | dout("d_release %p\n", dentry); |
5b484a51 JL |
1677 | |
1678 | spin_lock(&dentry->d_lock); | |
37c4efc1 | 1679 | __dentry_lease_unlist(di); |
5b484a51 JL |
1680 | dentry->d_fsdata = NULL; |
1681 | spin_unlock(&dentry->d_lock); | |
1682 | ||
3d8eb7a9 SW |
1683 | if (di->lease_session) |
1684 | ceph_put_mds_session(di->lease_session); | |
1685 | kmem_cache_free(ceph_dentry_cachep, di); | |
2817b000 SW |
1686 | } |
1687 | ||
b58dc410 SW |
1688 | /* |
1689 | * When the VFS prunes a dentry from the cache, we need to clear the | |
1690 | * complete flag on the parent directory. | |
1691 | * | |
1692 | * Called under dentry->d_lock. | |
1693 | */ | |
1694 | static void ceph_d_prune(struct dentry *dentry) | |
1695 | { | |
5495c2d0 YZ |
1696 | struct ceph_inode_info *dir_ci; |
1697 | struct ceph_dentry_info *di; | |
1698 | ||
1699 | dout("ceph_d_prune %pd %p\n", dentry, dentry); | |
b58dc410 SW |
1700 | |
1701 | /* do we have a valid parent? */ | |
8842b3be | 1702 | if (IS_ROOT(dentry)) |
b58dc410 SW |
1703 | return; |
1704 | ||
5495c2d0 YZ |
1705 | /* we hold d_lock, so d_parent is stable */ |
1706 | dir_ci = ceph_inode(d_inode(dentry->d_parent)); | |
1707 | if (dir_ci->i_vino.snap == CEPH_SNAPDIR) | |
b58dc410 | 1708 | return; |
2817b000 | 1709 | |
5495c2d0 YZ |
1710 | /* who calls d_delete() should also disable dcache readdir */ |
1711 | if (d_really_is_negative(dentry)) | |
18fc8abd AV |
1712 | return; |
1713 | ||
5495c2d0 YZ |
1714 | /* d_fsdata does not get cleared until d_release */ |
1715 | if (!d_unhashed(dentry)) { | |
1716 | __ceph_dir_clear_complete(dir_ci); | |
1717 | return; | |
1718 | } | |
1719 | ||
1720 | /* Disable dcache readdir just in case that someone called d_drop() | |
1721 | * or d_invalidate(), but MDS didn't revoke CEPH_CAP_FILE_SHARED | |
1722 | * properly (dcache readdir is still enabled) */ | |
1723 | di = ceph_dentry(dentry); | |
1724 | if (di->offset > 0 && | |
1725 | di->lease_shared_gen == atomic_read(&dir_ci->i_shared_gen)) | |
1726 | __ceph_dir_clear_ordered(dir_ci); | |
b58dc410 | 1727 | } |
2817b000 SW |
1728 | |
1729 | /* | |
1730 | * read() on a dir. This weird interface hack only works if mounted | |
1731 | * with '-o dirstat'. | |
1732 | */ | |
1733 | static ssize_t ceph_read_dir(struct file *file, char __user *buf, size_t size, | |
1734 | loff_t *ppos) | |
1735 | { | |
bb48bd4d | 1736 | struct ceph_dir_file_info *dfi = file->private_data; |
496ad9aa | 1737 | struct inode *inode = file_inode(file); |
2817b000 SW |
1738 | struct ceph_inode_info *ci = ceph_inode(inode); |
1739 | int left; | |
ae598083 | 1740 | const int bufsize = 1024; |
2817b000 | 1741 | |
3d14c5d2 | 1742 | if (!ceph_test_mount_opt(ceph_sb_to_client(inode->i_sb), DIRSTAT)) |
2817b000 SW |
1743 | return -EISDIR; |
1744 | ||
bb48bd4d CX |
1745 | if (!dfi->dir_info) { |
1746 | dfi->dir_info = kmalloc(bufsize, GFP_KERNEL); | |
1747 | if (!dfi->dir_info) | |
2817b000 | 1748 | return -ENOMEM; |
bb48bd4d CX |
1749 | dfi->dir_info_len = |
1750 | snprintf(dfi->dir_info, bufsize, | |
2817b000 SW |
1751 | "entries: %20lld\n" |
1752 | " files: %20lld\n" | |
1753 | " subdirs: %20lld\n" | |
1754 | "rentries: %20lld\n" | |
1755 | " rfiles: %20lld\n" | |
1756 | " rsubdirs: %20lld\n" | |
1757 | "rbytes: %20lld\n" | |
9bbeab41 | 1758 | "rctime: %10lld.%09ld\n", |
2817b000 SW |
1759 | ci->i_files + ci->i_subdirs, |
1760 | ci->i_files, | |
1761 | ci->i_subdirs, | |
1762 | ci->i_rfiles + ci->i_rsubdirs, | |
1763 | ci->i_rfiles, | |
1764 | ci->i_rsubdirs, | |
1765 | ci->i_rbytes, | |
9bbeab41 AB |
1766 | ci->i_rctime.tv_sec, |
1767 | ci->i_rctime.tv_nsec); | |
2817b000 SW |
1768 | } |
1769 | ||
bb48bd4d | 1770 | if (*ppos >= dfi->dir_info_len) |
2817b000 | 1771 | return 0; |
bb48bd4d CX |
1772 | size = min_t(unsigned, size, dfi->dir_info_len-*ppos); |
1773 | left = copy_to_user(buf, dfi->dir_info + *ppos, size); | |
2817b000 SW |
1774 | if (left == size) |
1775 | return -EFAULT; | |
1776 | *ppos += (size - left); | |
1777 | return size - left; | |
1778 | } | |
1779 | ||
2817b000 | 1780 | |
2817b000 | 1781 | |
6c0f3af7 SW |
1782 | /* |
1783 | * Return name hash for a given dentry. This is dependent on | |
1784 | * the parent directory's hash function. | |
1785 | */ | |
e5f86dc3 | 1786 | unsigned ceph_dentry_hash(struct inode *dir, struct dentry *dn) |
6c0f3af7 | 1787 | { |
6c0f3af7 | 1788 | struct ceph_inode_info *dci = ceph_inode(dir); |
76a495d6 | 1789 | unsigned hash; |
6c0f3af7 SW |
1790 | |
1791 | switch (dci->i_dir_layout.dl_dir_hash) { | |
1792 | case 0: /* for backward compat */ | |
1793 | case CEPH_STR_HASH_LINUX: | |
1794 | return dn->d_name.hash; | |
1795 | ||
1796 | default: | |
76a495d6 JL |
1797 | spin_lock(&dn->d_lock); |
1798 | hash = ceph_str_hash(dci->i_dir_layout.dl_dir_hash, | |
6c0f3af7 | 1799 | dn->d_name.name, dn->d_name.len); |
76a495d6 JL |
1800 | spin_unlock(&dn->d_lock); |
1801 | return hash; | |
6c0f3af7 SW |
1802 | } |
1803 | } | |
1804 | ||
2817b000 SW |
1805 | const struct file_operations ceph_dir_fops = { |
1806 | .read = ceph_read_dir, | |
77acfa29 | 1807 | .iterate = ceph_readdir, |
2817b000 SW |
1808 | .llseek = ceph_dir_llseek, |
1809 | .open = ceph_open, | |
1810 | .release = ceph_release, | |
1811 | .unlocked_ioctl = ceph_ioctl, | |
18bd6caa | 1812 | .compat_ioctl = compat_ptr_ioctl, |
da819c81 | 1813 | .fsync = ceph_fsync, |
597817dd YZ |
1814 | .lock = ceph_lock, |
1815 | .flock = ceph_flock, | |
2817b000 SW |
1816 | }; |
1817 | ||
38c48b5f YZ |
1818 | const struct file_operations ceph_snapdir_fops = { |
1819 | .iterate = ceph_readdir, | |
1820 | .llseek = ceph_dir_llseek, | |
1821 | .open = ceph_open, | |
1822 | .release = ceph_release, | |
1823 | }; | |
1824 | ||
2817b000 SW |
1825 | const struct inode_operations ceph_dir_iops = { |
1826 | .lookup = ceph_lookup, | |
1827 | .permission = ceph_permission, | |
1828 | .getattr = ceph_getattr, | |
1829 | .setattr = ceph_setattr, | |
2817b000 | 1830 | .listxattr = ceph_listxattr, |
7221fe4c | 1831 | .get_acl = ceph_get_acl, |
72466d0b | 1832 | .set_acl = ceph_set_acl, |
2817b000 SW |
1833 | .mknod = ceph_mknod, |
1834 | .symlink = ceph_symlink, | |
1835 | .mkdir = ceph_mkdir, | |
1836 | .link = ceph_link, | |
1837 | .unlink = ceph_unlink, | |
1838 | .rmdir = ceph_unlink, | |
1839 | .rename = ceph_rename, | |
1840 | .create = ceph_create, | |
2d83bde9 | 1841 | .atomic_open = ceph_atomic_open, |
2817b000 SW |
1842 | }; |
1843 | ||
38c48b5f YZ |
1844 | const struct inode_operations ceph_snapdir_iops = { |
1845 | .lookup = ceph_lookup, | |
1846 | .permission = ceph_permission, | |
1847 | .getattr = ceph_getattr, | |
1848 | .mkdir = ceph_mkdir, | |
1849 | .rmdir = ceph_unlink, | |
0ea611a3 | 1850 | .rename = ceph_rename, |
38c48b5f YZ |
1851 | }; |
1852 | ||
52dfb8ac | 1853 | const struct dentry_operations ceph_dentry_ops = { |
2817b000 | 1854 | .d_revalidate = ceph_d_revalidate, |
1e9c2eb6 | 1855 | .d_delete = ceph_d_delete, |
147851d2 | 1856 | .d_release = ceph_d_release, |
b58dc410 | 1857 | .d_prune = ceph_d_prune, |
ad5cb123 | 1858 | .d_init = ceph_d_init, |
2817b000 | 1859 | }; |