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3d14c5d2 | 1 | #include <linux/ceph/ceph_debug.h> |
355da1eb SW |
2 | |
3 | #include <linux/module.h> | |
4 | #include <linux/fs.h> | |
355da1eb SW |
5 | #include <linux/slab.h> |
6 | #include <linux/string.h> | |
7 | #include <linux/uaccess.h> | |
8 | #include <linux/kernel.h> | |
9 | #include <linux/namei.h> | |
10 | #include <linux/writeback.h> | |
11 | #include <linux/vmalloc.h> | |
4db658ea | 12 | #include <linux/posix_acl.h> |
355da1eb SW |
13 | |
14 | #include "super.h" | |
3d14c5d2 | 15 | #include "mds_client.h" |
99ccbd22 | 16 | #include "cache.h" |
3d14c5d2 | 17 | #include <linux/ceph/decode.h> |
355da1eb SW |
18 | |
19 | /* | |
20 | * Ceph inode operations | |
21 | * | |
22 | * Implement basic inode helpers (get, alloc) and inode ops (getattr, | |
23 | * setattr, etc.), xattr helpers, and helpers for assimilating | |
24 | * metadata returned by the MDS into our cache. | |
25 | * | |
26 | * Also define helpers for doing asynchronous writeback, invalidation, | |
27 | * and truncation for the benefit of those who can't afford to block | |
28 | * (typically because they are in the message handler path). | |
29 | */ | |
30 | ||
31 | static const struct inode_operations ceph_symlink_iops; | |
32 | ||
3c6f6b79 SW |
33 | static void ceph_invalidate_work(struct work_struct *work); |
34 | static void ceph_writeback_work(struct work_struct *work); | |
35 | static void ceph_vmtruncate_work(struct work_struct *work); | |
355da1eb SW |
36 | |
37 | /* | |
38 | * find or create an inode, given the ceph ino number | |
39 | */ | |
ad1fee96 YS |
40 | static int ceph_set_ino_cb(struct inode *inode, void *data) |
41 | { | |
42 | ceph_inode(inode)->i_vino = *(struct ceph_vino *)data; | |
43 | inode->i_ino = ceph_vino_to_ino(*(struct ceph_vino *)data); | |
44 | return 0; | |
45 | } | |
46 | ||
355da1eb SW |
47 | struct inode *ceph_get_inode(struct super_block *sb, struct ceph_vino vino) |
48 | { | |
49 | struct inode *inode; | |
50 | ino_t t = ceph_vino_to_ino(vino); | |
51 | ||
52 | inode = iget5_locked(sb, t, ceph_ino_compare, ceph_set_ino_cb, &vino); | |
53 | if (inode == NULL) | |
54 | return ERR_PTR(-ENOMEM); | |
55 | if (inode->i_state & I_NEW) { | |
56 | dout("get_inode created new inode %p %llx.%llx ino %llx\n", | |
57 | inode, ceph_vinop(inode), (u64)inode->i_ino); | |
58 | unlock_new_inode(inode); | |
59 | } | |
60 | ||
61 | dout("get_inode on %lu=%llx.%llx got %p\n", inode->i_ino, vino.ino, | |
62 | vino.snap, inode); | |
63 | return inode; | |
64 | } | |
65 | ||
66 | /* | |
67 | * get/constuct snapdir inode for a given directory | |
68 | */ | |
69 | struct inode *ceph_get_snapdir(struct inode *parent) | |
70 | { | |
71 | struct ceph_vino vino = { | |
72 | .ino = ceph_ino(parent), | |
73 | .snap = CEPH_SNAPDIR, | |
74 | }; | |
75 | struct inode *inode = ceph_get_inode(parent->i_sb, vino); | |
b377ff13 | 76 | struct ceph_inode_info *ci = ceph_inode(inode); |
355da1eb SW |
77 | |
78 | BUG_ON(!S_ISDIR(parent->i_mode)); | |
79 | if (IS_ERR(inode)) | |
7e34bc52 | 80 | return inode; |
355da1eb SW |
81 | inode->i_mode = parent->i_mode; |
82 | inode->i_uid = parent->i_uid; | |
83 | inode->i_gid = parent->i_gid; | |
84 | inode->i_op = &ceph_dir_iops; | |
85 | inode->i_fop = &ceph_dir_fops; | |
b377ff13 SW |
86 | ci->i_snap_caps = CEPH_CAP_PIN; /* so we can open */ |
87 | ci->i_rbytes = 0; | |
355da1eb SW |
88 | return inode; |
89 | } | |
90 | ||
91 | const struct inode_operations ceph_file_iops = { | |
92 | .permission = ceph_permission, | |
93 | .setattr = ceph_setattr, | |
94 | .getattr = ceph_getattr, | |
95 | .setxattr = ceph_setxattr, | |
96 | .getxattr = ceph_getxattr, | |
97 | .listxattr = ceph_listxattr, | |
98 | .removexattr = ceph_removexattr, | |
7221fe4c | 99 | .get_acl = ceph_get_acl, |
355da1eb SW |
100 | }; |
101 | ||
102 | ||
103 | /* | |
104 | * We use a 'frag tree' to keep track of the MDS's directory fragments | |
105 | * for a given inode (usually there is just a single fragment). We | |
106 | * need to know when a child frag is delegated to a new MDS, or when | |
107 | * it is flagged as replicated, so we can direct our requests | |
108 | * accordingly. | |
109 | */ | |
110 | ||
111 | /* | |
112 | * find/create a frag in the tree | |
113 | */ | |
114 | static struct ceph_inode_frag *__get_or_create_frag(struct ceph_inode_info *ci, | |
115 | u32 f) | |
116 | { | |
117 | struct rb_node **p; | |
118 | struct rb_node *parent = NULL; | |
119 | struct ceph_inode_frag *frag; | |
120 | int c; | |
121 | ||
122 | p = &ci->i_fragtree.rb_node; | |
123 | while (*p) { | |
124 | parent = *p; | |
125 | frag = rb_entry(parent, struct ceph_inode_frag, node); | |
126 | c = ceph_frag_compare(f, frag->frag); | |
127 | if (c < 0) | |
128 | p = &(*p)->rb_left; | |
129 | else if (c > 0) | |
130 | p = &(*p)->rb_right; | |
131 | else | |
132 | return frag; | |
133 | } | |
134 | ||
135 | frag = kmalloc(sizeof(*frag), GFP_NOFS); | |
136 | if (!frag) { | |
137 | pr_err("__get_or_create_frag ENOMEM on %p %llx.%llx " | |
138 | "frag %x\n", &ci->vfs_inode, | |
139 | ceph_vinop(&ci->vfs_inode), f); | |
140 | return ERR_PTR(-ENOMEM); | |
141 | } | |
142 | frag->frag = f; | |
143 | frag->split_by = 0; | |
144 | frag->mds = -1; | |
145 | frag->ndist = 0; | |
146 | ||
147 | rb_link_node(&frag->node, parent, p); | |
148 | rb_insert_color(&frag->node, &ci->i_fragtree); | |
149 | ||
150 | dout("get_or_create_frag added %llx.%llx frag %x\n", | |
151 | ceph_vinop(&ci->vfs_inode), f); | |
152 | return frag; | |
153 | } | |
154 | ||
155 | /* | |
156 | * find a specific frag @f | |
157 | */ | |
158 | struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, u32 f) | |
159 | { | |
160 | struct rb_node *n = ci->i_fragtree.rb_node; | |
161 | ||
162 | while (n) { | |
163 | struct ceph_inode_frag *frag = | |
164 | rb_entry(n, struct ceph_inode_frag, node); | |
165 | int c = ceph_frag_compare(f, frag->frag); | |
166 | if (c < 0) | |
167 | n = n->rb_left; | |
168 | else if (c > 0) | |
169 | n = n->rb_right; | |
170 | else | |
171 | return frag; | |
172 | } | |
173 | return NULL; | |
174 | } | |
175 | ||
176 | /* | |
177 | * Choose frag containing the given value @v. If @pfrag is | |
178 | * specified, copy the frag delegation info to the caller if | |
179 | * it is present. | |
180 | */ | |
181 | u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, | |
182 | struct ceph_inode_frag *pfrag, | |
183 | int *found) | |
184 | { | |
185 | u32 t = ceph_frag_make(0, 0); | |
186 | struct ceph_inode_frag *frag; | |
187 | unsigned nway, i; | |
188 | u32 n; | |
189 | ||
190 | if (found) | |
191 | *found = 0; | |
192 | ||
193 | mutex_lock(&ci->i_fragtree_mutex); | |
194 | while (1) { | |
195 | WARN_ON(!ceph_frag_contains_value(t, v)); | |
196 | frag = __ceph_find_frag(ci, t); | |
197 | if (!frag) | |
198 | break; /* t is a leaf */ | |
199 | if (frag->split_by == 0) { | |
200 | if (pfrag) | |
201 | memcpy(pfrag, frag, sizeof(*pfrag)); | |
202 | if (found) | |
203 | *found = 1; | |
204 | break; | |
205 | } | |
206 | ||
207 | /* choose child */ | |
208 | nway = 1 << frag->split_by; | |
209 | dout("choose_frag(%x) %x splits by %d (%d ways)\n", v, t, | |
210 | frag->split_by, nway); | |
211 | for (i = 0; i < nway; i++) { | |
212 | n = ceph_frag_make_child(t, frag->split_by, i); | |
213 | if (ceph_frag_contains_value(n, v)) { | |
214 | t = n; | |
215 | break; | |
216 | } | |
217 | } | |
218 | BUG_ON(i == nway); | |
219 | } | |
220 | dout("choose_frag(%x) = %x\n", v, t); | |
221 | ||
222 | mutex_unlock(&ci->i_fragtree_mutex); | |
223 | return t; | |
224 | } | |
225 | ||
226 | /* | |
227 | * Process dirfrag (delegation) info from the mds. Include leaf | |
228 | * fragment in tree ONLY if ndist > 0. Otherwise, only | |
229 | * branches/splits are included in i_fragtree) | |
230 | */ | |
231 | static int ceph_fill_dirfrag(struct inode *inode, | |
232 | struct ceph_mds_reply_dirfrag *dirinfo) | |
233 | { | |
234 | struct ceph_inode_info *ci = ceph_inode(inode); | |
235 | struct ceph_inode_frag *frag; | |
236 | u32 id = le32_to_cpu(dirinfo->frag); | |
237 | int mds = le32_to_cpu(dirinfo->auth); | |
238 | int ndist = le32_to_cpu(dirinfo->ndist); | |
239 | int i; | |
240 | int err = 0; | |
241 | ||
242 | mutex_lock(&ci->i_fragtree_mutex); | |
243 | if (ndist == 0) { | |
244 | /* no delegation info needed. */ | |
245 | frag = __ceph_find_frag(ci, id); | |
246 | if (!frag) | |
247 | goto out; | |
248 | if (frag->split_by == 0) { | |
249 | /* tree leaf, remove */ | |
250 | dout("fill_dirfrag removed %llx.%llx frag %x" | |
251 | " (no ref)\n", ceph_vinop(inode), id); | |
252 | rb_erase(&frag->node, &ci->i_fragtree); | |
253 | kfree(frag); | |
254 | } else { | |
255 | /* tree branch, keep and clear */ | |
256 | dout("fill_dirfrag cleared %llx.%llx frag %x" | |
257 | " referral\n", ceph_vinop(inode), id); | |
258 | frag->mds = -1; | |
259 | frag->ndist = 0; | |
260 | } | |
261 | goto out; | |
262 | } | |
263 | ||
264 | ||
265 | /* find/add this frag to store mds delegation info */ | |
266 | frag = __get_or_create_frag(ci, id); | |
267 | if (IS_ERR(frag)) { | |
268 | /* this is not the end of the world; we can continue | |
269 | with bad/inaccurate delegation info */ | |
270 | pr_err("fill_dirfrag ENOMEM on mds ref %llx.%llx fg %x\n", | |
271 | ceph_vinop(inode), le32_to_cpu(dirinfo->frag)); | |
272 | err = -ENOMEM; | |
273 | goto out; | |
274 | } | |
275 | ||
276 | frag->mds = mds; | |
277 | frag->ndist = min_t(u32, ndist, CEPH_MAX_DIRFRAG_REP); | |
278 | for (i = 0; i < frag->ndist; i++) | |
279 | frag->dist[i] = le32_to_cpu(dirinfo->dist[i]); | |
280 | dout("fill_dirfrag %llx.%llx frag %x ndist=%d\n", | |
281 | ceph_vinop(inode), frag->frag, frag->ndist); | |
282 | ||
283 | out: | |
284 | mutex_unlock(&ci->i_fragtree_mutex); | |
285 | return err; | |
286 | } | |
287 | ||
288 | ||
289 | /* | |
290 | * initialize a newly allocated inode. | |
291 | */ | |
292 | struct inode *ceph_alloc_inode(struct super_block *sb) | |
293 | { | |
294 | struct ceph_inode_info *ci; | |
295 | int i; | |
296 | ||
297 | ci = kmem_cache_alloc(ceph_inode_cachep, GFP_NOFS); | |
298 | if (!ci) | |
299 | return NULL; | |
300 | ||
301 | dout("alloc_inode %p\n", &ci->vfs_inode); | |
302 | ||
be655596 SW |
303 | spin_lock_init(&ci->i_ceph_lock); |
304 | ||
355da1eb SW |
305 | ci->i_version = 0; |
306 | ci->i_time_warp_seq = 0; | |
307 | ci->i_ceph_flags = 0; | |
2f276c51 YZ |
308 | atomic_set(&ci->i_release_count, 1); |
309 | atomic_set(&ci->i_complete_count, 0); | |
355da1eb SW |
310 | ci->i_symlink = NULL; |
311 | ||
6c0f3af7 SW |
312 | memset(&ci->i_dir_layout, 0, sizeof(ci->i_dir_layout)); |
313 | ||
355da1eb SW |
314 | ci->i_fragtree = RB_ROOT; |
315 | mutex_init(&ci->i_fragtree_mutex); | |
316 | ||
317 | ci->i_xattrs.blob = NULL; | |
318 | ci->i_xattrs.prealloc_blob = NULL; | |
319 | ci->i_xattrs.dirty = false; | |
320 | ci->i_xattrs.index = RB_ROOT; | |
321 | ci->i_xattrs.count = 0; | |
322 | ci->i_xattrs.names_size = 0; | |
323 | ci->i_xattrs.vals_size = 0; | |
324 | ci->i_xattrs.version = 0; | |
325 | ci->i_xattrs.index_version = 0; | |
326 | ||
327 | ci->i_caps = RB_ROOT; | |
328 | ci->i_auth_cap = NULL; | |
329 | ci->i_dirty_caps = 0; | |
330 | ci->i_flushing_caps = 0; | |
331 | INIT_LIST_HEAD(&ci->i_dirty_item); | |
332 | INIT_LIST_HEAD(&ci->i_flushing_item); | |
333 | ci->i_cap_flush_seq = 0; | |
334 | ci->i_cap_flush_last_tid = 0; | |
335 | memset(&ci->i_cap_flush_tid, 0, sizeof(ci->i_cap_flush_tid)); | |
336 | init_waitqueue_head(&ci->i_cap_wq); | |
337 | ci->i_hold_caps_min = 0; | |
338 | ci->i_hold_caps_max = 0; | |
339 | INIT_LIST_HEAD(&ci->i_cap_delay_list); | |
355da1eb SW |
340 | INIT_LIST_HEAD(&ci->i_cap_snaps); |
341 | ci->i_head_snapc = NULL; | |
342 | ci->i_snap_caps = 0; | |
11df2dfb | 343 | ci->i_cap_exporting_issued = 0; |
355da1eb SW |
344 | |
345 | for (i = 0; i < CEPH_FILE_MODE_NUM; i++) | |
346 | ci->i_nr_by_mode[i] = 0; | |
347 | ||
b0d7c223 | 348 | mutex_init(&ci->i_truncate_mutex); |
355da1eb SW |
349 | ci->i_truncate_seq = 0; |
350 | ci->i_truncate_size = 0; | |
351 | ci->i_truncate_pending = 0; | |
352 | ||
353 | ci->i_max_size = 0; | |
354 | ci->i_reported_size = 0; | |
355 | ci->i_wanted_max_size = 0; | |
356 | ci->i_requested_max_size = 0; | |
357 | ||
358 | ci->i_pin_ref = 0; | |
359 | ci->i_rd_ref = 0; | |
360 | ci->i_rdcache_ref = 0; | |
361 | ci->i_wr_ref = 0; | |
d3d0720d | 362 | ci->i_wb_ref = 0; |
355da1eb SW |
363 | ci->i_wrbuffer_ref = 0; |
364 | ci->i_wrbuffer_ref_head = 0; | |
365 | ci->i_shared_gen = 0; | |
366 | ci->i_rdcache_gen = 0; | |
367 | ci->i_rdcache_revoking = 0; | |
368 | ||
369 | INIT_LIST_HEAD(&ci->i_unsafe_writes); | |
370 | INIT_LIST_HEAD(&ci->i_unsafe_dirops); | |
371 | spin_lock_init(&ci->i_unsafe_lock); | |
372 | ||
373 | ci->i_snap_realm = NULL; | |
374 | INIT_LIST_HEAD(&ci->i_snap_realm_item); | |
375 | INIT_LIST_HEAD(&ci->i_snap_flush_item); | |
376 | ||
3c6f6b79 SW |
377 | INIT_WORK(&ci->i_wb_work, ceph_writeback_work); |
378 | INIT_WORK(&ci->i_pg_inv_work, ceph_invalidate_work); | |
355da1eb SW |
379 | |
380 | INIT_WORK(&ci->i_vmtruncate_work, ceph_vmtruncate_work); | |
381 | ||
99ccbd22 MT |
382 | ceph_fscache_inode_init(ci); |
383 | ||
355da1eb SW |
384 | return &ci->vfs_inode; |
385 | } | |
386 | ||
fa0d7e3d NP |
387 | static void ceph_i_callback(struct rcu_head *head) |
388 | { | |
389 | struct inode *inode = container_of(head, struct inode, i_rcu); | |
390 | struct ceph_inode_info *ci = ceph_inode(inode); | |
391 | ||
fa0d7e3d NP |
392 | kmem_cache_free(ceph_inode_cachep, ci); |
393 | } | |
394 | ||
355da1eb SW |
395 | void ceph_destroy_inode(struct inode *inode) |
396 | { | |
397 | struct ceph_inode_info *ci = ceph_inode(inode); | |
398 | struct ceph_inode_frag *frag; | |
399 | struct rb_node *n; | |
400 | ||
401 | dout("destroy_inode %p ino %llx.%llx\n", inode, ceph_vinop(inode)); | |
402 | ||
99ccbd22 MT |
403 | ceph_fscache_unregister_inode_cookie(ci); |
404 | ||
355da1eb SW |
405 | ceph_queue_caps_release(inode); |
406 | ||
8b218b8a SW |
407 | /* |
408 | * we may still have a snap_realm reference if there are stray | |
409 | * caps in i_cap_exporting_issued or i_snap_caps. | |
410 | */ | |
411 | if (ci->i_snap_realm) { | |
412 | struct ceph_mds_client *mdsc = | |
3d14c5d2 | 413 | ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc; |
8b218b8a SW |
414 | struct ceph_snap_realm *realm = ci->i_snap_realm; |
415 | ||
416 | dout(" dropping residual ref to snap realm %p\n", realm); | |
417 | spin_lock(&realm->inodes_with_caps_lock); | |
418 | list_del_init(&ci->i_snap_realm_item); | |
419 | spin_unlock(&realm->inodes_with_caps_lock); | |
420 | ceph_put_snap_realm(mdsc, realm); | |
421 | } | |
422 | ||
355da1eb SW |
423 | kfree(ci->i_symlink); |
424 | while ((n = rb_first(&ci->i_fragtree)) != NULL) { | |
425 | frag = rb_entry(n, struct ceph_inode_frag, node); | |
426 | rb_erase(n, &ci->i_fragtree); | |
427 | kfree(frag); | |
428 | } | |
429 | ||
430 | __ceph_destroy_xattrs(ci); | |
b6c1d5b8 SW |
431 | if (ci->i_xattrs.blob) |
432 | ceph_buffer_put(ci->i_xattrs.blob); | |
433 | if (ci->i_xattrs.prealloc_blob) | |
434 | ceph_buffer_put(ci->i_xattrs.prealloc_blob); | |
355da1eb | 435 | |
fa0d7e3d | 436 | call_rcu(&inode->i_rcu, ceph_i_callback); |
355da1eb SW |
437 | } |
438 | ||
9f12bd11 YZ |
439 | int ceph_drop_inode(struct inode *inode) |
440 | { | |
441 | /* | |
442 | * Positve dentry and corresponding inode are always accompanied | |
443 | * in MDS reply. So no need to keep inode in the cache after | |
444 | * dropping all its aliases. | |
445 | */ | |
446 | return 1; | |
447 | } | |
448 | ||
355da1eb SW |
449 | /* |
450 | * Helpers to fill in size, ctime, mtime, and atime. We have to be | |
451 | * careful because either the client or MDS may have more up to date | |
452 | * info, depending on which capabilities are held, and whether | |
453 | * time_warp_seq or truncate_seq have increased. (Ordinarily, mtime | |
454 | * and size are monotonically increasing, except when utimes() or | |
455 | * truncate() increments the corresponding _seq values.) | |
456 | */ | |
457 | int ceph_fill_file_size(struct inode *inode, int issued, | |
458 | u32 truncate_seq, u64 truncate_size, u64 size) | |
459 | { | |
460 | struct ceph_inode_info *ci = ceph_inode(inode); | |
461 | int queue_trunc = 0; | |
462 | ||
463 | if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) > 0 || | |
464 | (truncate_seq == ci->i_truncate_seq && size > inode->i_size)) { | |
465 | dout("size %lld -> %llu\n", inode->i_size, size); | |
466 | inode->i_size = size; | |
467 | inode->i_blocks = (size + (1<<9) - 1) >> 9; | |
468 | ci->i_reported_size = size; | |
469 | if (truncate_seq != ci->i_truncate_seq) { | |
470 | dout("truncate_seq %u -> %u\n", | |
471 | ci->i_truncate_seq, truncate_seq); | |
472 | ci->i_truncate_seq = truncate_seq; | |
b0d7c223 YZ |
473 | |
474 | /* the MDS should have revoked these caps */ | |
475 | WARN_ON_ONCE(issued & (CEPH_CAP_FILE_EXCL | | |
476 | CEPH_CAP_FILE_RD | | |
477 | CEPH_CAP_FILE_WR | | |
478 | CEPH_CAP_FILE_LAZYIO)); | |
3d497d85 YS |
479 | /* |
480 | * If we hold relevant caps, or in the case where we're | |
481 | * not the only client referencing this file and we | |
482 | * don't hold those caps, then we need to check whether | |
483 | * the file is either opened or mmaped | |
484 | */ | |
b0d7c223 YZ |
485 | if ((issued & (CEPH_CAP_FILE_CACHE| |
486 | CEPH_CAP_FILE_BUFFER)) || | |
3d497d85 YS |
487 | mapping_mapped(inode->i_mapping) || |
488 | __ceph_caps_file_wanted(ci)) { | |
355da1eb SW |
489 | ci->i_truncate_pending++; |
490 | queue_trunc = 1; | |
491 | } | |
492 | } | |
493 | } | |
494 | if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) >= 0 && | |
495 | ci->i_truncate_size != truncate_size) { | |
496 | dout("truncate_size %lld -> %llu\n", ci->i_truncate_size, | |
497 | truncate_size); | |
498 | ci->i_truncate_size = truncate_size; | |
499 | } | |
99ccbd22 MT |
500 | |
501 | if (queue_trunc) | |
502 | ceph_fscache_invalidate(inode); | |
503 | ||
355da1eb SW |
504 | return queue_trunc; |
505 | } | |
506 | ||
507 | void ceph_fill_file_time(struct inode *inode, int issued, | |
508 | u64 time_warp_seq, struct timespec *ctime, | |
509 | struct timespec *mtime, struct timespec *atime) | |
510 | { | |
511 | struct ceph_inode_info *ci = ceph_inode(inode); | |
512 | int warn = 0; | |
513 | ||
514 | if (issued & (CEPH_CAP_FILE_EXCL| | |
515 | CEPH_CAP_FILE_WR| | |
d8672d64 SW |
516 | CEPH_CAP_FILE_BUFFER| |
517 | CEPH_CAP_AUTH_EXCL| | |
518 | CEPH_CAP_XATTR_EXCL)) { | |
355da1eb SW |
519 | if (timespec_compare(ctime, &inode->i_ctime) > 0) { |
520 | dout("ctime %ld.%09ld -> %ld.%09ld inc w/ cap\n", | |
521 | inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, | |
522 | ctime->tv_sec, ctime->tv_nsec); | |
523 | inode->i_ctime = *ctime; | |
524 | } | |
525 | if (ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) > 0) { | |
526 | /* the MDS did a utimes() */ | |
527 | dout("mtime %ld.%09ld -> %ld.%09ld " | |
528 | "tw %d -> %d\n", | |
529 | inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, | |
530 | mtime->tv_sec, mtime->tv_nsec, | |
531 | ci->i_time_warp_seq, (int)time_warp_seq); | |
532 | ||
533 | inode->i_mtime = *mtime; | |
534 | inode->i_atime = *atime; | |
535 | ci->i_time_warp_seq = time_warp_seq; | |
536 | } else if (time_warp_seq == ci->i_time_warp_seq) { | |
537 | /* nobody did utimes(); take the max */ | |
538 | if (timespec_compare(mtime, &inode->i_mtime) > 0) { | |
539 | dout("mtime %ld.%09ld -> %ld.%09ld inc\n", | |
540 | inode->i_mtime.tv_sec, | |
541 | inode->i_mtime.tv_nsec, | |
542 | mtime->tv_sec, mtime->tv_nsec); | |
543 | inode->i_mtime = *mtime; | |
544 | } | |
545 | if (timespec_compare(atime, &inode->i_atime) > 0) { | |
546 | dout("atime %ld.%09ld -> %ld.%09ld inc\n", | |
547 | inode->i_atime.tv_sec, | |
548 | inode->i_atime.tv_nsec, | |
549 | atime->tv_sec, atime->tv_nsec); | |
550 | inode->i_atime = *atime; | |
551 | } | |
552 | } else if (issued & CEPH_CAP_FILE_EXCL) { | |
553 | /* we did a utimes(); ignore mds values */ | |
554 | } else { | |
555 | warn = 1; | |
556 | } | |
557 | } else { | |
d8672d64 | 558 | /* we have no write|excl caps; whatever the MDS says is true */ |
355da1eb SW |
559 | if (ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) >= 0) { |
560 | inode->i_ctime = *ctime; | |
561 | inode->i_mtime = *mtime; | |
562 | inode->i_atime = *atime; | |
563 | ci->i_time_warp_seq = time_warp_seq; | |
564 | } else { | |
565 | warn = 1; | |
566 | } | |
567 | } | |
568 | if (warn) /* time_warp_seq shouldn't go backwards */ | |
569 | dout("%p mds time_warp_seq %llu < %u\n", | |
570 | inode, time_warp_seq, ci->i_time_warp_seq); | |
571 | } | |
572 | ||
573 | /* | |
574 | * Populate an inode based on info from mds. May be called on new or | |
575 | * existing inodes. | |
576 | */ | |
577 | static int fill_inode(struct inode *inode, | |
578 | struct ceph_mds_reply_info_in *iinfo, | |
579 | struct ceph_mds_reply_dirfrag *dirinfo, | |
580 | struct ceph_mds_session *session, | |
581 | unsigned long ttl_from, int cap_fmode, | |
582 | struct ceph_cap_reservation *caps_reservation) | |
583 | { | |
584 | struct ceph_mds_reply_inode *info = iinfo->in; | |
585 | struct ceph_inode_info *ci = ceph_inode(inode); | |
586 | int i; | |
dfabbed6 | 587 | int issued = 0, implemented; |
355da1eb SW |
588 | struct timespec mtime, atime, ctime; |
589 | u32 nsplits; | |
53e879a4 YZ |
590 | struct ceph_inode_frag *frag; |
591 | struct rb_node *rb_node; | |
355da1eb SW |
592 | struct ceph_buffer *xattr_blob = NULL; |
593 | int err = 0; | |
594 | int queue_trunc = 0; | |
595 | ||
596 | dout("fill_inode %p ino %llx.%llx v %llu had %llu\n", | |
597 | inode, ceph_vinop(inode), le64_to_cpu(info->version), | |
598 | ci->i_version); | |
599 | ||
600 | /* | |
601 | * prealloc xattr data, if it looks like we'll need it. only | |
602 | * if len > 4 (meaning there are actually xattrs; the first 4 | |
603 | * bytes are the xattr count). | |
604 | */ | |
605 | if (iinfo->xattr_len > 4) { | |
b6c1d5b8 | 606 | xattr_blob = ceph_buffer_new(iinfo->xattr_len, GFP_NOFS); |
355da1eb SW |
607 | if (!xattr_blob) |
608 | pr_err("fill_inode ENOMEM xattr blob %d bytes\n", | |
609 | iinfo->xattr_len); | |
610 | } | |
611 | ||
be655596 | 612 | spin_lock(&ci->i_ceph_lock); |
355da1eb SW |
613 | |
614 | /* | |
615 | * provided version will be odd if inode value is projected, | |
8bd59e01 SW |
616 | * even if stable. skip the update if we have newer stable |
617 | * info (ours>=theirs, e.g. due to racing mds replies), unless | |
618 | * we are getting projected (unstable) info (in which case the | |
619 | * version is odd, and we want ours>theirs). | |
620 | * us them | |
621 | * 2 2 skip | |
622 | * 3 2 skip | |
623 | * 3 3 update | |
355da1eb SW |
624 | */ |
625 | if (le64_to_cpu(info->version) > 0 && | |
8bd59e01 | 626 | (ci->i_version & ~1) >= le64_to_cpu(info->version)) |
355da1eb | 627 | goto no_change; |
dfabbed6 | 628 | |
355da1eb SW |
629 | issued = __ceph_caps_issued(ci, &implemented); |
630 | issued |= implemented | __ceph_caps_dirty(ci); | |
631 | ||
632 | /* update inode */ | |
633 | ci->i_version = le64_to_cpu(info->version); | |
634 | inode->i_version++; | |
635 | inode->i_rdev = le32_to_cpu(info->rdev); | |
636 | ||
637 | if ((issued & CEPH_CAP_AUTH_EXCL) == 0) { | |
638 | inode->i_mode = le32_to_cpu(info->mode); | |
ab871b90 EB |
639 | inode->i_uid = make_kuid(&init_user_ns, le32_to_cpu(info->uid)); |
640 | inode->i_gid = make_kgid(&init_user_ns, le32_to_cpu(info->gid)); | |
355da1eb | 641 | dout("%p mode 0%o uid.gid %d.%d\n", inode, inode->i_mode, |
bd2bae6a EB |
642 | from_kuid(&init_user_ns, inode->i_uid), |
643 | from_kgid(&init_user_ns, inode->i_gid)); | |
355da1eb SW |
644 | } |
645 | ||
646 | if ((issued & CEPH_CAP_LINK_EXCL) == 0) | |
bfe86848 | 647 | set_nlink(inode, le32_to_cpu(info->nlink)); |
355da1eb SW |
648 | |
649 | /* be careful with mtime, atime, size */ | |
650 | ceph_decode_timespec(&atime, &info->atime); | |
651 | ceph_decode_timespec(&mtime, &info->mtime); | |
652 | ceph_decode_timespec(&ctime, &info->ctime); | |
653 | queue_trunc = ceph_fill_file_size(inode, issued, | |
654 | le32_to_cpu(info->truncate_seq), | |
655 | le64_to_cpu(info->truncate_size), | |
355da1eb SW |
656 | le64_to_cpu(info->size)); |
657 | ceph_fill_file_time(inode, issued, | |
658 | le32_to_cpu(info->time_warp_seq), | |
659 | &ctime, &mtime, &atime); | |
660 | ||
912a9b03 SW |
661 | /* only update max_size on auth cap */ |
662 | if ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && | |
663 | ci->i_max_size != le64_to_cpu(info->max_size)) { | |
664 | dout("max_size %lld -> %llu\n", ci->i_max_size, | |
665 | le64_to_cpu(info->max_size)); | |
666 | ci->i_max_size = le64_to_cpu(info->max_size); | |
667 | } | |
668 | ||
355da1eb SW |
669 | ci->i_layout = info->layout; |
670 | inode->i_blkbits = fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1; | |
671 | ||
672 | /* xattrs */ | |
673 | /* note that if i_xattrs.len <= 4, i_xattrs.data will still be NULL. */ | |
674 | if ((issued & CEPH_CAP_XATTR_EXCL) == 0 && | |
675 | le64_to_cpu(info->xattr_version) > ci->i_xattrs.version) { | |
676 | if (ci->i_xattrs.blob) | |
677 | ceph_buffer_put(ci->i_xattrs.blob); | |
678 | ci->i_xattrs.blob = xattr_blob; | |
679 | if (xattr_blob) | |
680 | memcpy(ci->i_xattrs.blob->vec.iov_base, | |
681 | iinfo->xattr_data, iinfo->xattr_len); | |
682 | ci->i_xattrs.version = le64_to_cpu(info->xattr_version); | |
7221fe4c | 683 | ceph_forget_all_cached_acls(inode); |
a6424e48 | 684 | xattr_blob = NULL; |
355da1eb SW |
685 | } |
686 | ||
687 | inode->i_mapping->a_ops = &ceph_aops; | |
688 | inode->i_mapping->backing_dev_info = | |
640ef79d | 689 | &ceph_sb_to_client(inode->i_sb)->backing_dev_info; |
355da1eb SW |
690 | |
691 | switch (inode->i_mode & S_IFMT) { | |
692 | case S_IFIFO: | |
693 | case S_IFBLK: | |
694 | case S_IFCHR: | |
695 | case S_IFSOCK: | |
696 | init_special_inode(inode, inode->i_mode, inode->i_rdev); | |
697 | inode->i_op = &ceph_file_iops; | |
698 | break; | |
699 | case S_IFREG: | |
700 | inode->i_op = &ceph_file_iops; | |
701 | inode->i_fop = &ceph_file_fops; | |
702 | break; | |
703 | case S_IFLNK: | |
704 | inode->i_op = &ceph_symlink_iops; | |
705 | if (!ci->i_symlink) { | |
810339ec | 706 | u32 symlen = iinfo->symlink_len; |
355da1eb SW |
707 | char *sym; |
708 | ||
be655596 | 709 | spin_unlock(&ci->i_ceph_lock); |
355da1eb | 710 | |
810339ec XW |
711 | err = -EINVAL; |
712 | if (WARN_ON(symlen != inode->i_size)) | |
713 | goto out; | |
714 | ||
355da1eb | 715 | err = -ENOMEM; |
810339ec | 716 | sym = kstrndup(iinfo->symlink, symlen, GFP_NOFS); |
355da1eb SW |
717 | if (!sym) |
718 | goto out; | |
355da1eb | 719 | |
be655596 | 720 | spin_lock(&ci->i_ceph_lock); |
355da1eb SW |
721 | if (!ci->i_symlink) |
722 | ci->i_symlink = sym; | |
723 | else | |
724 | kfree(sym); /* lost a race */ | |
725 | } | |
726 | break; | |
727 | case S_IFDIR: | |
728 | inode->i_op = &ceph_dir_iops; | |
729 | inode->i_fop = &ceph_dir_fops; | |
730 | ||
14303d20 SW |
731 | ci->i_dir_layout = iinfo->dir_layout; |
732 | ||
355da1eb SW |
733 | ci->i_files = le64_to_cpu(info->files); |
734 | ci->i_subdirs = le64_to_cpu(info->subdirs); | |
735 | ci->i_rbytes = le64_to_cpu(info->rbytes); | |
736 | ci->i_rfiles = le64_to_cpu(info->rfiles); | |
737 | ci->i_rsubdirs = le64_to_cpu(info->rsubdirs); | |
738 | ceph_decode_timespec(&ci->i_rctime, &info->rctime); | |
355da1eb SW |
739 | break; |
740 | default: | |
741 | pr_err("fill_inode %llx.%llx BAD mode 0%o\n", | |
742 | ceph_vinop(inode), inode->i_mode); | |
743 | } | |
744 | ||
a8673d61 YZ |
745 | /* set dir completion flag? */ |
746 | if (S_ISDIR(inode->i_mode) && | |
747 | ci->i_files == 0 && ci->i_subdirs == 0 && | |
748 | ceph_snap(inode) == CEPH_NOSNAP && | |
749 | (le32_to_cpu(info->cap.caps) & CEPH_CAP_FILE_SHARED) && | |
750 | (issued & CEPH_CAP_FILE_EXCL) == 0 && | |
2f276c51 | 751 | !__ceph_dir_is_complete(ci)) { |
a8673d61 | 752 | dout(" marking %p complete (empty)\n", inode); |
2f276c51 | 753 | __ceph_dir_set_complete(ci, atomic_read(&ci->i_release_count)); |
a8673d61 YZ |
754 | ci->i_max_offset = 2; |
755 | } | |
355da1eb | 756 | no_change: |
be655596 | 757 | spin_unlock(&ci->i_ceph_lock); |
355da1eb SW |
758 | |
759 | /* queue truncate if we saw i_size decrease */ | |
760 | if (queue_trunc) | |
3c6f6b79 | 761 | ceph_queue_vmtruncate(inode); |
355da1eb SW |
762 | |
763 | /* populate frag tree */ | |
764 | /* FIXME: move me up, if/when version reflects fragtree changes */ | |
765 | nsplits = le32_to_cpu(info->fragtree.nsplits); | |
766 | mutex_lock(&ci->i_fragtree_mutex); | |
53e879a4 | 767 | rb_node = rb_first(&ci->i_fragtree); |
355da1eb SW |
768 | for (i = 0; i < nsplits; i++) { |
769 | u32 id = le32_to_cpu(info->fragtree.splits[i].frag); | |
53e879a4 YZ |
770 | frag = NULL; |
771 | while (rb_node) { | |
772 | frag = rb_entry(rb_node, struct ceph_inode_frag, node); | |
773 | if (ceph_frag_compare(frag->frag, id) >= 0) { | |
774 | if (frag->frag != id) | |
775 | frag = NULL; | |
776 | else | |
777 | rb_node = rb_next(rb_node); | |
778 | break; | |
779 | } | |
780 | rb_node = rb_next(rb_node); | |
781 | rb_erase(&frag->node, &ci->i_fragtree); | |
782 | kfree(frag); | |
783 | frag = NULL; | |
784 | } | |
785 | if (!frag) { | |
786 | frag = __get_or_create_frag(ci, id); | |
787 | if (IS_ERR(frag)) | |
788 | continue; | |
789 | } | |
355da1eb SW |
790 | frag->split_by = le32_to_cpu(info->fragtree.splits[i].by); |
791 | dout(" frag %x split by %d\n", frag->frag, frag->split_by); | |
792 | } | |
53e879a4 YZ |
793 | while (rb_node) { |
794 | frag = rb_entry(rb_node, struct ceph_inode_frag, node); | |
795 | rb_node = rb_next(rb_node); | |
796 | rb_erase(&frag->node, &ci->i_fragtree); | |
797 | kfree(frag); | |
798 | } | |
355da1eb SW |
799 | mutex_unlock(&ci->i_fragtree_mutex); |
800 | ||
801 | /* were we issued a capability? */ | |
802 | if (info->cap.caps) { | |
803 | if (ceph_snap(inode) == CEPH_NOSNAP) { | |
804 | ceph_add_cap(inode, session, | |
805 | le64_to_cpu(info->cap.cap_id), | |
806 | cap_fmode, | |
807 | le32_to_cpu(info->cap.caps), | |
808 | le32_to_cpu(info->cap.wanted), | |
809 | le32_to_cpu(info->cap.seq), | |
810 | le32_to_cpu(info->cap.mseq), | |
811 | le64_to_cpu(info->cap.realm), | |
812 | info->cap.flags, | |
813 | caps_reservation); | |
814 | } else { | |
be655596 | 815 | spin_lock(&ci->i_ceph_lock); |
355da1eb SW |
816 | dout(" %p got snap_caps %s\n", inode, |
817 | ceph_cap_string(le32_to_cpu(info->cap.caps))); | |
818 | ci->i_snap_caps |= le32_to_cpu(info->cap.caps); | |
819 | if (cap_fmode >= 0) | |
820 | __ceph_get_fmode(ci, cap_fmode); | |
be655596 | 821 | spin_unlock(&ci->i_ceph_lock); |
355da1eb | 822 | } |
04d000eb SW |
823 | } else if (cap_fmode >= 0) { |
824 | pr_warning("mds issued no caps on %llx.%llx\n", | |
825 | ceph_vinop(inode)); | |
826 | __ceph_get_fmode(ci, cap_fmode); | |
355da1eb SW |
827 | } |
828 | ||
829 | /* update delegation info? */ | |
830 | if (dirinfo) | |
831 | ceph_fill_dirfrag(inode, dirinfo); | |
832 | ||
833 | err = 0; | |
834 | ||
835 | out: | |
b6c1d5b8 SW |
836 | if (xattr_blob) |
837 | ceph_buffer_put(xattr_blob); | |
355da1eb SW |
838 | return err; |
839 | } | |
840 | ||
841 | /* | |
842 | * caller should hold session s_mutex. | |
843 | */ | |
844 | static void update_dentry_lease(struct dentry *dentry, | |
845 | struct ceph_mds_reply_lease *lease, | |
846 | struct ceph_mds_session *session, | |
847 | unsigned long from_time) | |
848 | { | |
849 | struct ceph_dentry_info *di = ceph_dentry(dentry); | |
850 | long unsigned duration = le32_to_cpu(lease->duration_ms); | |
851 | long unsigned ttl = from_time + (duration * HZ) / 1000; | |
852 | long unsigned half_ttl = from_time + (duration * HZ / 2) / 1000; | |
853 | struct inode *dir; | |
854 | ||
855 | /* only track leases on regular dentries */ | |
856 | if (dentry->d_op != &ceph_dentry_ops) | |
857 | return; | |
858 | ||
859 | spin_lock(&dentry->d_lock); | |
2f90b852 SW |
860 | dout("update_dentry_lease %p duration %lu ms ttl %lu\n", |
861 | dentry, duration, ttl); | |
355da1eb SW |
862 | |
863 | /* make lease_rdcache_gen match directory */ | |
864 | dir = dentry->d_parent->d_inode; | |
865 | di->lease_shared_gen = ceph_inode(dir)->i_shared_gen; | |
866 | ||
2f90b852 | 867 | if (duration == 0) |
355da1eb SW |
868 | goto out_unlock; |
869 | ||
870 | if (di->lease_gen == session->s_cap_gen && | |
871 | time_before(ttl, dentry->d_time)) | |
872 | goto out_unlock; /* we already have a newer lease. */ | |
873 | ||
874 | if (di->lease_session && di->lease_session != session) | |
875 | goto out_unlock; | |
876 | ||
877 | ceph_dentry_lru_touch(dentry); | |
878 | ||
879 | if (!di->lease_session) | |
880 | di->lease_session = ceph_get_mds_session(session); | |
881 | di->lease_gen = session->s_cap_gen; | |
882 | di->lease_seq = le32_to_cpu(lease->seq); | |
883 | di->lease_renew_after = half_ttl; | |
884 | di->lease_renew_from = 0; | |
885 | dentry->d_time = ttl; | |
886 | out_unlock: | |
887 | spin_unlock(&dentry->d_lock); | |
888 | return; | |
889 | } | |
890 | ||
1cd3935b SW |
891 | /* |
892 | * Set dentry's directory position based on the current dir's max, and | |
893 | * order it in d_subdirs, so that dcache_readdir behaves. | |
4f177264 SW |
894 | * |
895 | * Always called under directory's i_mutex. | |
1cd3935b SW |
896 | */ |
897 | static void ceph_set_dentry_offset(struct dentry *dn) | |
898 | { | |
899 | struct dentry *dir = dn->d_parent; | |
4f177264 | 900 | struct inode *inode = dir->d_inode; |
b8cd952b | 901 | struct ceph_inode_info *ci; |
1cd3935b SW |
902 | struct ceph_dentry_info *di; |
903 | ||
904 | BUG_ON(!inode); | |
905 | ||
b8cd952b | 906 | ci = ceph_inode(inode); |
1cd3935b SW |
907 | di = ceph_dentry(dn); |
908 | ||
be655596 | 909 | spin_lock(&ci->i_ceph_lock); |
2f276c51 | 910 | if (!__ceph_dir_is_complete(ci)) { |
be655596 | 911 | spin_unlock(&ci->i_ceph_lock); |
1cd3935b SW |
912 | return; |
913 | } | |
914 | di->offset = ceph_inode(inode)->i_max_offset++; | |
be655596 | 915 | spin_unlock(&ci->i_ceph_lock); |
1cd3935b | 916 | |
2fd6b7f5 NP |
917 | spin_lock(&dir->d_lock); |
918 | spin_lock_nested(&dn->d_lock, DENTRY_D_LOCK_NESTED); | |
13a4214c | 919 | list_move(&dn->d_u.d_child, &dir->d_subdirs); |
1cd3935b SW |
920 | dout("set_dentry_offset %p %lld (%p %p)\n", dn, di->offset, |
921 | dn->d_u.d_child.prev, dn->d_u.d_child.next); | |
922 | spin_unlock(&dn->d_lock); | |
2fd6b7f5 | 923 | spin_unlock(&dir->d_lock); |
1cd3935b SW |
924 | } |
925 | ||
355da1eb SW |
926 | /* |
927 | * splice a dentry to an inode. | |
928 | * caller must hold directory i_mutex for this to be safe. | |
929 | * | |
930 | * we will only rehash the resulting dentry if @prehash is | |
931 | * true; @prehash will be set to false (for the benefit of | |
932 | * the caller) if we fail. | |
933 | */ | |
934 | static struct dentry *splice_dentry(struct dentry *dn, struct inode *in, | |
467c5251 | 935 | bool *prehash, bool set_offset) |
355da1eb SW |
936 | { |
937 | struct dentry *realdn; | |
938 | ||
1cd3935b SW |
939 | BUG_ON(dn->d_inode); |
940 | ||
355da1eb SW |
941 | /* dn must be unhashed */ |
942 | if (!d_unhashed(dn)) | |
943 | d_drop(dn); | |
944 | realdn = d_materialise_unique(dn, in); | |
945 | if (IS_ERR(realdn)) { | |
d69ed05a SW |
946 | pr_err("splice_dentry error %ld %p inode %p ino %llx.%llx\n", |
947 | PTR_ERR(realdn), dn, in, ceph_vinop(in)); | |
355da1eb SW |
948 | if (prehash) |
949 | *prehash = false; /* don't rehash on error */ | |
950 | dn = realdn; /* note realdn contains the error */ | |
951 | goto out; | |
952 | } else if (realdn) { | |
953 | dout("dn %p (%d) spliced with %p (%d) " | |
954 | "inode %p ino %llx.%llx\n", | |
84d08fa8 AV |
955 | dn, d_count(dn), |
956 | realdn, d_count(realdn), | |
355da1eb SW |
957 | realdn->d_inode, ceph_vinop(realdn->d_inode)); |
958 | dput(dn); | |
959 | dn = realdn; | |
960 | } else { | |
961 | BUG_ON(!ceph_dentry(dn)); | |
355da1eb SW |
962 | dout("dn %p attached to %p ino %llx.%llx\n", |
963 | dn, dn->d_inode, ceph_vinop(dn->d_inode)); | |
964 | } | |
965 | if ((!prehash || *prehash) && d_unhashed(dn)) | |
966 | d_rehash(dn); | |
467c5251 SW |
967 | if (set_offset) |
968 | ceph_set_dentry_offset(dn); | |
355da1eb SW |
969 | out: |
970 | return dn; | |
971 | } | |
972 | ||
973 | /* | |
974 | * Incorporate results into the local cache. This is either just | |
975 | * one inode, or a directory, dentry, and possibly linked-to inode (e.g., | |
976 | * after a lookup). | |
977 | * | |
978 | * A reply may contain | |
979 | * a directory inode along with a dentry. | |
980 | * and/or a target inode | |
981 | * | |
982 | * Called with snap_rwsem (read). | |
983 | */ | |
984 | int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req, | |
985 | struct ceph_mds_session *session) | |
986 | { | |
987 | struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; | |
988 | struct inode *in = NULL; | |
989 | struct ceph_mds_reply_inode *ininfo; | |
990 | struct ceph_vino vino; | |
3d14c5d2 | 991 | struct ceph_fs_client *fsc = ceph_sb_to_client(sb); |
355da1eb SW |
992 | int err = 0; |
993 | ||
994 | dout("fill_trace %p is_dentry %d is_target %d\n", req, | |
995 | rinfo->head->is_dentry, rinfo->head->is_target); | |
996 | ||
997 | #if 0 | |
998 | /* | |
999 | * Debugging hook: | |
1000 | * | |
1001 | * If we resend completed ops to a recovering mds, we get no | |
1002 | * trace. Since that is very rare, pretend this is the case | |
1003 | * to ensure the 'no trace' handlers in the callers behave. | |
1004 | * | |
1005 | * Fill in inodes unconditionally to avoid breaking cap | |
1006 | * invariants. | |
1007 | */ | |
1008 | if (rinfo->head->op & CEPH_MDS_OP_WRITE) { | |
1009 | pr_info("fill_trace faking empty trace on %lld %s\n", | |
1010 | req->r_tid, ceph_mds_op_name(rinfo->head->op)); | |
1011 | if (rinfo->head->is_dentry) { | |
1012 | rinfo->head->is_dentry = 0; | |
1013 | err = fill_inode(req->r_locked_dir, | |
1014 | &rinfo->diri, rinfo->dirfrag, | |
1015 | session, req->r_request_started, -1); | |
1016 | } | |
1017 | if (rinfo->head->is_target) { | |
1018 | rinfo->head->is_target = 0; | |
1019 | ininfo = rinfo->targeti.in; | |
1020 | vino.ino = le64_to_cpu(ininfo->ino); | |
1021 | vino.snap = le64_to_cpu(ininfo->snapid); | |
1022 | in = ceph_get_inode(sb, vino); | |
1023 | err = fill_inode(in, &rinfo->targeti, NULL, | |
1024 | session, req->r_request_started, | |
1025 | req->r_fmode); | |
1026 | iput(in); | |
1027 | } | |
1028 | } | |
1029 | #endif | |
1030 | ||
1031 | if (!rinfo->head->is_target && !rinfo->head->is_dentry) { | |
1032 | dout("fill_trace reply is empty!\n"); | |
167c9e35 SW |
1033 | if (rinfo->head->result == 0 && req->r_locked_dir) |
1034 | ceph_invalidate_dir_request(req); | |
355da1eb SW |
1035 | return 0; |
1036 | } | |
1037 | ||
1038 | if (rinfo->head->is_dentry) { | |
5b1daecd SW |
1039 | struct inode *dir = req->r_locked_dir; |
1040 | ||
6c5e50fa SW |
1041 | if (dir) { |
1042 | err = fill_inode(dir, &rinfo->diri, rinfo->dirfrag, | |
1043 | session, req->r_request_started, -1, | |
1044 | &req->r_caps_reservation); | |
1045 | if (err < 0) | |
1046 | return err; | |
1047 | } else { | |
1048 | WARN_ON_ONCE(1); | |
1049 | } | |
5b1daecd SW |
1050 | } |
1051 | ||
86b58d13 YZ |
1052 | if (rinfo->head->is_target) { |
1053 | vino.ino = le64_to_cpu(rinfo->targeti.in->ino); | |
1054 | vino.snap = le64_to_cpu(rinfo->targeti.in->snapid); | |
1055 | ||
1056 | in = ceph_get_inode(sb, vino); | |
1057 | if (IS_ERR(in)) { | |
1058 | err = PTR_ERR(in); | |
1059 | goto done; | |
1060 | } | |
1061 | req->r_target_inode = in; | |
1062 | ||
1063 | err = fill_inode(in, &rinfo->targeti, NULL, | |
1064 | session, req->r_request_started, | |
1065 | (le32_to_cpu(rinfo->head->result) == 0) ? | |
1066 | req->r_fmode : -1, | |
1067 | &req->r_caps_reservation); | |
1068 | if (err < 0) { | |
1069 | pr_err("fill_inode badness %p %llx.%llx\n", | |
1070 | in, ceph_vinop(in)); | |
1071 | goto done; | |
1072 | } | |
1073 | } | |
1074 | ||
9358c6d4 SW |
1075 | /* |
1076 | * ignore null lease/binding on snapdir ENOENT, or else we | |
1077 | * will have trouble splicing in the virtual snapdir later | |
1078 | */ | |
1079 | if (rinfo->head->is_dentry && !req->r_aborted && | |
6c5e50fa | 1080 | req->r_locked_dir && |
9358c6d4 | 1081 | (rinfo->head->is_target || strncmp(req->r_dentry->d_name.name, |
3d14c5d2 | 1082 | fsc->mount_options->snapdir_name, |
9358c6d4 | 1083 | req->r_dentry->d_name.len))) { |
355da1eb SW |
1084 | /* |
1085 | * lookup link rename : null -> possibly existing inode | |
1086 | * mknod symlink mkdir : null -> new inode | |
1087 | * unlink : linked -> null | |
1088 | */ | |
1089 | struct inode *dir = req->r_locked_dir; | |
1090 | struct dentry *dn = req->r_dentry; | |
1091 | bool have_dir_cap, have_lease; | |
1092 | ||
1093 | BUG_ON(!dn); | |
1094 | BUG_ON(!dir); | |
1095 | BUG_ON(dn->d_parent->d_inode != dir); | |
1096 | BUG_ON(ceph_ino(dir) != | |
1097 | le64_to_cpu(rinfo->diri.in->ino)); | |
1098 | BUG_ON(ceph_snap(dir) != | |
1099 | le64_to_cpu(rinfo->diri.in->snapid)); | |
1100 | ||
355da1eb SW |
1101 | /* do we have a lease on the whole dir? */ |
1102 | have_dir_cap = | |
1103 | (le32_to_cpu(rinfo->diri.in->cap.caps) & | |
1104 | CEPH_CAP_FILE_SHARED); | |
1105 | ||
1106 | /* do we have a dn lease? */ | |
1107 | have_lease = have_dir_cap || | |
2f90b852 | 1108 | le32_to_cpu(rinfo->dlease->duration_ms); |
355da1eb SW |
1109 | if (!have_lease) |
1110 | dout("fill_trace no dentry lease or dir cap\n"); | |
1111 | ||
1112 | /* rename? */ | |
1113 | if (req->r_old_dentry && req->r_op == CEPH_MDS_OP_RENAME) { | |
1114 | dout(" src %p '%.*s' dst %p '%.*s'\n", | |
1115 | req->r_old_dentry, | |
1116 | req->r_old_dentry->d_name.len, | |
1117 | req->r_old_dentry->d_name.name, | |
1118 | dn, dn->d_name.len, dn->d_name.name); | |
1119 | dout("fill_trace doing d_move %p -> %p\n", | |
1120 | req->r_old_dentry, dn); | |
c10f5e12 | 1121 | |
355da1eb SW |
1122 | d_move(req->r_old_dentry, dn); |
1123 | dout(" src %p '%.*s' dst %p '%.*s'\n", | |
1124 | req->r_old_dentry, | |
1125 | req->r_old_dentry->d_name.len, | |
1126 | req->r_old_dentry->d_name.name, | |
1127 | dn, dn->d_name.len, dn->d_name.name); | |
81a6cf2d | 1128 | |
c4a29f26 SW |
1129 | /* ensure target dentry is invalidated, despite |
1130 | rehashing bug in vfs_rename_dir */ | |
81a6cf2d SW |
1131 | ceph_invalidate_dentry_lease(dn); |
1132 | ||
09adc80c SW |
1133 | /* |
1134 | * d_move() puts the renamed dentry at the end of | |
1135 | * d_subdirs. We need to assign it an appropriate | |
2f276c51 YZ |
1136 | * directory offset so we can behave when dir is |
1137 | * complete. | |
09adc80c SW |
1138 | */ |
1139 | ceph_set_dentry_offset(req->r_old_dentry); | |
99ccbd22 | 1140 | dout("dn %p gets new offset %lld\n", req->r_old_dentry, |
1cd3935b | 1141 | ceph_dentry(req->r_old_dentry)->offset); |
81a6cf2d | 1142 | |
355da1eb | 1143 | dn = req->r_old_dentry; /* use old_dentry */ |
355da1eb SW |
1144 | } |
1145 | ||
1146 | /* null dentry? */ | |
1147 | if (!rinfo->head->is_target) { | |
1148 | dout("fill_trace null dentry\n"); | |
1149 | if (dn->d_inode) { | |
1150 | dout("d_delete %p\n", dn); | |
1151 | d_delete(dn); | |
1152 | } else { | |
1153 | dout("d_instantiate %p NULL\n", dn); | |
1154 | d_instantiate(dn, NULL); | |
1155 | if (have_lease && d_unhashed(dn)) | |
1156 | d_rehash(dn); | |
1157 | update_dentry_lease(dn, rinfo->dlease, | |
1158 | session, | |
1159 | req->r_request_started); | |
1160 | } | |
1161 | goto done; | |
1162 | } | |
1163 | ||
1164 | /* attach proper inode */ | |
86b58d13 YZ |
1165 | if (!dn->d_inode) { |
1166 | ihold(in); | |
467c5251 | 1167 | dn = splice_dentry(dn, in, &have_lease, true); |
355da1eb SW |
1168 | if (IS_ERR(dn)) { |
1169 | err = PTR_ERR(dn); | |
1170 | goto done; | |
1171 | } | |
1172 | req->r_dentry = dn; /* may have spliced */ | |
86b58d13 | 1173 | } else if (dn->d_inode && dn->d_inode != in) { |
355da1eb | 1174 | dout(" %p links to %p %llx.%llx, not %llx.%llx\n", |
86b58d13 YZ |
1175 | dn, dn->d_inode, ceph_vinop(dn->d_inode), |
1176 | ceph_vinop(in)); | |
355da1eb | 1177 | have_lease = false; |
355da1eb SW |
1178 | } |
1179 | ||
1180 | if (have_lease) | |
1181 | update_dentry_lease(dn, rinfo->dlease, session, | |
1182 | req->r_request_started); | |
1183 | dout(" final dn %p\n", dn); | |
86b58d13 YZ |
1184 | } else if (!req->r_aborted && |
1185 | (req->r_op == CEPH_MDS_OP_LOOKUPSNAP || | |
1186 | req->r_op == CEPH_MDS_OP_MKSNAP)) { | |
355da1eb SW |
1187 | struct dentry *dn = req->r_dentry; |
1188 | ||
1189 | /* fill out a snapdir LOOKUPSNAP dentry */ | |
1190 | BUG_ON(!dn); | |
1191 | BUG_ON(!req->r_locked_dir); | |
1192 | BUG_ON(ceph_snap(req->r_locked_dir) != CEPH_SNAPDIR); | |
1193 | ininfo = rinfo->targeti.in; | |
1194 | vino.ino = le64_to_cpu(ininfo->ino); | |
1195 | vino.snap = le64_to_cpu(ininfo->snapid); | |
355da1eb | 1196 | dout(" linking snapped dir %p to dn %p\n", in, dn); |
86b58d13 | 1197 | ihold(in); |
467c5251 | 1198 | dn = splice_dentry(dn, in, NULL, true); |
355da1eb SW |
1199 | if (IS_ERR(dn)) { |
1200 | err = PTR_ERR(dn); | |
1201 | goto done; | |
1202 | } | |
1203 | req->r_dentry = dn; /* may have spliced */ | |
355da1eb | 1204 | } |
355da1eb SW |
1205 | done: |
1206 | dout("fill_trace done err=%d\n", err); | |
1207 | return err; | |
1208 | } | |
1209 | ||
1210 | /* | |
1211 | * Prepopulate our cache with readdir results, leases, etc. | |
1212 | */ | |
79f9f99a SW |
1213 | static int readdir_prepopulate_inodes_only(struct ceph_mds_request *req, |
1214 | struct ceph_mds_session *session) | |
1215 | { | |
1216 | struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; | |
1217 | int i, err = 0; | |
1218 | ||
1219 | for (i = 0; i < rinfo->dir_nr; i++) { | |
1220 | struct ceph_vino vino; | |
1221 | struct inode *in; | |
1222 | int rc; | |
1223 | ||
1224 | vino.ino = le64_to_cpu(rinfo->dir_in[i].in->ino); | |
1225 | vino.snap = le64_to_cpu(rinfo->dir_in[i].in->snapid); | |
1226 | ||
1227 | in = ceph_get_inode(req->r_dentry->d_sb, vino); | |
1228 | if (IS_ERR(in)) { | |
1229 | err = PTR_ERR(in); | |
1230 | dout("new_inode badness got %d\n", err); | |
1231 | continue; | |
1232 | } | |
1233 | rc = fill_inode(in, &rinfo->dir_in[i], NULL, session, | |
1234 | req->r_request_started, -1, | |
1235 | &req->r_caps_reservation); | |
1236 | if (rc < 0) { | |
1237 | pr_err("fill_inode badness on %p got %d\n", in, rc); | |
1238 | err = rc; | |
1239 | continue; | |
1240 | } | |
1241 | } | |
1242 | ||
1243 | return err; | |
1244 | } | |
1245 | ||
355da1eb SW |
1246 | int ceph_readdir_prepopulate(struct ceph_mds_request *req, |
1247 | struct ceph_mds_session *session) | |
1248 | { | |
1249 | struct dentry *parent = req->r_dentry; | |
1250 | struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; | |
1251 | struct qstr dname; | |
1252 | struct dentry *dn; | |
1253 | struct inode *in; | |
86b58d13 | 1254 | int err = 0, ret, i; |
355da1eb SW |
1255 | struct inode *snapdir = NULL; |
1256 | struct ceph_mds_request_head *rhead = req->r_request->front.iov_base; | |
355da1eb | 1257 | struct ceph_dentry_info *di; |
81c6aea5 YZ |
1258 | u64 r_readdir_offset = req->r_readdir_offset; |
1259 | u32 frag = le32_to_cpu(rhead->args.readdir.frag); | |
1260 | ||
1261 | if (rinfo->dir_dir && | |
1262 | le32_to_cpu(rinfo->dir_dir->frag) != frag) { | |
1263 | dout("readdir_prepopulate got new frag %x -> %x\n", | |
1264 | frag, le32_to_cpu(rinfo->dir_dir->frag)); | |
1265 | frag = le32_to_cpu(rinfo->dir_dir->frag); | |
1266 | if (ceph_frag_is_leftmost(frag)) | |
1267 | r_readdir_offset = 2; | |
1268 | else | |
1269 | r_readdir_offset = 0; | |
1270 | } | |
355da1eb | 1271 | |
79f9f99a SW |
1272 | if (req->r_aborted) |
1273 | return readdir_prepopulate_inodes_only(req, session); | |
355da1eb SW |
1274 | |
1275 | if (le32_to_cpu(rinfo->head->op) == CEPH_MDS_OP_LSSNAP) { | |
1276 | snapdir = ceph_get_snapdir(parent->d_inode); | |
1277 | parent = d_find_alias(snapdir); | |
1278 | dout("readdir_prepopulate %d items under SNAPDIR dn %p\n", | |
1279 | rinfo->dir_nr, parent); | |
1280 | } else { | |
1281 | dout("readdir_prepopulate %d items under dn %p\n", | |
1282 | rinfo->dir_nr, parent); | |
1283 | if (rinfo->dir_dir) | |
1284 | ceph_fill_dirfrag(parent->d_inode, rinfo->dir_dir); | |
1285 | } | |
1286 | ||
86b58d13 | 1287 | /* FIXME: release caps/leases if error occurs */ |
355da1eb SW |
1288 | for (i = 0; i < rinfo->dir_nr; i++) { |
1289 | struct ceph_vino vino; | |
1290 | ||
1291 | dname.name = rinfo->dir_dname[i]; | |
1292 | dname.len = rinfo->dir_dname_len[i]; | |
1293 | dname.hash = full_name_hash(dname.name, dname.len); | |
1294 | ||
1295 | vino.ino = le64_to_cpu(rinfo->dir_in[i].in->ino); | |
1296 | vino.snap = le64_to_cpu(rinfo->dir_in[i].in->snapid); | |
1297 | ||
1298 | retry_lookup: | |
1299 | dn = d_lookup(parent, &dname); | |
1300 | dout("d_lookup on parent=%p name=%.*s got %p\n", | |
1301 | parent, dname.len, dname.name, dn); | |
1302 | ||
1303 | if (!dn) { | |
1304 | dn = d_alloc(parent, &dname); | |
1305 | dout("d_alloc %p '%.*s' = %p\n", parent, | |
1306 | dname.len, dname.name, dn); | |
1307 | if (dn == NULL) { | |
1308 | dout("d_alloc badness\n"); | |
1309 | err = -ENOMEM; | |
1310 | goto out; | |
1311 | } | |
86b58d13 YZ |
1312 | ret = ceph_init_dentry(dn); |
1313 | if (ret < 0) { | |
8c696737 | 1314 | dput(dn); |
86b58d13 | 1315 | err = ret; |
355da1eb | 1316 | goto out; |
8c696737 | 1317 | } |
355da1eb SW |
1318 | } else if (dn->d_inode && |
1319 | (ceph_ino(dn->d_inode) != vino.ino || | |
1320 | ceph_snap(dn->d_inode) != vino.snap)) { | |
1321 | dout(" dn %p points to wrong inode %p\n", | |
1322 | dn, dn->d_inode); | |
1323 | d_delete(dn); | |
1324 | dput(dn); | |
1325 | goto retry_lookup; | |
1326 | } else { | |
1327 | /* reorder parent's d_subdirs */ | |
2fd6b7f5 NP |
1328 | spin_lock(&parent->d_lock); |
1329 | spin_lock_nested(&dn->d_lock, DENTRY_D_LOCK_NESTED); | |
355da1eb SW |
1330 | list_move(&dn->d_u.d_child, &parent->d_subdirs); |
1331 | spin_unlock(&dn->d_lock); | |
2fd6b7f5 | 1332 | spin_unlock(&parent->d_lock); |
355da1eb SW |
1333 | } |
1334 | ||
355da1eb SW |
1335 | /* inode */ |
1336 | if (dn->d_inode) { | |
1337 | in = dn->d_inode; | |
1338 | } else { | |
1339 | in = ceph_get_inode(parent->d_sb, vino); | |
ac1f12ef | 1340 | if (IS_ERR(in)) { |
355da1eb | 1341 | dout("new_inode badness\n"); |
2744c171 | 1342 | d_drop(dn); |
355da1eb | 1343 | dput(dn); |
ac1f12ef | 1344 | err = PTR_ERR(in); |
355da1eb SW |
1345 | goto out; |
1346 | } | |
355da1eb SW |
1347 | } |
1348 | ||
1349 | if (fill_inode(in, &rinfo->dir_in[i], NULL, session, | |
1350 | req->r_request_started, -1, | |
1351 | &req->r_caps_reservation) < 0) { | |
1352 | pr_err("fill_inode badness on %p\n", in); | |
86b58d13 YZ |
1353 | if (!dn->d_inode) |
1354 | iput(in); | |
1355 | d_drop(dn); | |
d69ed05a | 1356 | goto next_item; |
355da1eb | 1357 | } |
86b58d13 YZ |
1358 | |
1359 | if (!dn->d_inode) { | |
1360 | dn = splice_dentry(dn, in, NULL, false); | |
1361 | if (IS_ERR(dn)) { | |
1362 | err = PTR_ERR(dn); | |
1363 | dn = NULL; | |
1364 | goto next_item; | |
1365 | } | |
1366 | } | |
1367 | ||
1368 | di = dn->d_fsdata; | |
1369 | di->offset = ceph_make_fpos(frag, i + r_readdir_offset); | |
1370 | ||
1371 | update_dentry_lease(dn, rinfo->dir_dlease[i], | |
1372 | req->r_session, | |
1373 | req->r_request_started); | |
d69ed05a SW |
1374 | next_item: |
1375 | if (dn) | |
1376 | dput(dn); | |
355da1eb | 1377 | } |
86b58d13 YZ |
1378 | if (err == 0) |
1379 | req->r_did_prepopulate = true; | |
355da1eb SW |
1380 | |
1381 | out: | |
1382 | if (snapdir) { | |
1383 | iput(snapdir); | |
1384 | dput(parent); | |
1385 | } | |
1386 | dout("readdir_prepopulate done\n"); | |
1387 | return err; | |
1388 | } | |
1389 | ||
1390 | int ceph_inode_set_size(struct inode *inode, loff_t size) | |
1391 | { | |
1392 | struct ceph_inode_info *ci = ceph_inode(inode); | |
1393 | int ret = 0; | |
1394 | ||
be655596 | 1395 | spin_lock(&ci->i_ceph_lock); |
355da1eb SW |
1396 | dout("set_size %p %llu -> %llu\n", inode, inode->i_size, size); |
1397 | inode->i_size = size; | |
1398 | inode->i_blocks = (size + (1 << 9) - 1) >> 9; | |
1399 | ||
1400 | /* tell the MDS if we are approaching max_size */ | |
1401 | if ((size << 1) >= ci->i_max_size && | |
1402 | (ci->i_reported_size << 1) < ci->i_max_size) | |
1403 | ret = 1; | |
1404 | ||
be655596 | 1405 | spin_unlock(&ci->i_ceph_lock); |
355da1eb SW |
1406 | return ret; |
1407 | } | |
1408 | ||
1409 | /* | |
1410 | * Write back inode data in a worker thread. (This can't be done | |
1411 | * in the message handler context.) | |
1412 | */ | |
3c6f6b79 SW |
1413 | void ceph_queue_writeback(struct inode *inode) |
1414 | { | |
15a2015f | 1415 | ihold(inode); |
3c6f6b79 SW |
1416 | if (queue_work(ceph_inode_to_client(inode)->wb_wq, |
1417 | &ceph_inode(inode)->i_wb_work)) { | |
2c27c9a5 | 1418 | dout("ceph_queue_writeback %p\n", inode); |
3c6f6b79 | 1419 | } else { |
2c27c9a5 | 1420 | dout("ceph_queue_writeback %p failed\n", inode); |
15a2015f | 1421 | iput(inode); |
3c6f6b79 SW |
1422 | } |
1423 | } | |
1424 | ||
1425 | static void ceph_writeback_work(struct work_struct *work) | |
355da1eb SW |
1426 | { |
1427 | struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, | |
1428 | i_wb_work); | |
1429 | struct inode *inode = &ci->vfs_inode; | |
1430 | ||
1431 | dout("writeback %p\n", inode); | |
1432 | filemap_fdatawrite(&inode->i_data); | |
1433 | iput(inode); | |
1434 | } | |
1435 | ||
3c6f6b79 SW |
1436 | /* |
1437 | * queue an async invalidation | |
1438 | */ | |
1439 | void ceph_queue_invalidate(struct inode *inode) | |
1440 | { | |
15a2015f | 1441 | ihold(inode); |
3c6f6b79 SW |
1442 | if (queue_work(ceph_inode_to_client(inode)->pg_inv_wq, |
1443 | &ceph_inode(inode)->i_pg_inv_work)) { | |
1444 | dout("ceph_queue_invalidate %p\n", inode); | |
3c6f6b79 SW |
1445 | } else { |
1446 | dout("ceph_queue_invalidate %p failed\n", inode); | |
15a2015f | 1447 | iput(inode); |
3c6f6b79 SW |
1448 | } |
1449 | } | |
1450 | ||
355da1eb SW |
1451 | /* |
1452 | * Invalidate inode pages in a worker thread. (This can't be done | |
1453 | * in the message handler context.) | |
1454 | */ | |
3c6f6b79 | 1455 | static void ceph_invalidate_work(struct work_struct *work) |
355da1eb SW |
1456 | { |
1457 | struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, | |
1458 | i_pg_inv_work); | |
1459 | struct inode *inode = &ci->vfs_inode; | |
1460 | u32 orig_gen; | |
1461 | int check = 0; | |
1462 | ||
b0d7c223 | 1463 | mutex_lock(&ci->i_truncate_mutex); |
be655596 | 1464 | spin_lock(&ci->i_ceph_lock); |
355da1eb SW |
1465 | dout("invalidate_pages %p gen %d revoking %d\n", inode, |
1466 | ci->i_rdcache_gen, ci->i_rdcache_revoking); | |
cd045cb4 | 1467 | if (ci->i_rdcache_revoking != ci->i_rdcache_gen) { |
9563f88c YZ |
1468 | if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) |
1469 | check = 1; | |
be655596 | 1470 | spin_unlock(&ci->i_ceph_lock); |
b0d7c223 | 1471 | mutex_unlock(&ci->i_truncate_mutex); |
355da1eb SW |
1472 | goto out; |
1473 | } | |
1474 | orig_gen = ci->i_rdcache_gen; | |
be655596 | 1475 | spin_unlock(&ci->i_ceph_lock); |
355da1eb | 1476 | |
b0d7c223 | 1477 | truncate_inode_pages(inode->i_mapping, 0); |
355da1eb | 1478 | |
be655596 | 1479 | spin_lock(&ci->i_ceph_lock); |
cd045cb4 SW |
1480 | if (orig_gen == ci->i_rdcache_gen && |
1481 | orig_gen == ci->i_rdcache_revoking) { | |
355da1eb SW |
1482 | dout("invalidate_pages %p gen %d successful\n", inode, |
1483 | ci->i_rdcache_gen); | |
cd045cb4 | 1484 | ci->i_rdcache_revoking--; |
355da1eb SW |
1485 | check = 1; |
1486 | } else { | |
cd045cb4 SW |
1487 | dout("invalidate_pages %p gen %d raced, now %d revoking %d\n", |
1488 | inode, orig_gen, ci->i_rdcache_gen, | |
1489 | ci->i_rdcache_revoking); | |
9563f88c YZ |
1490 | if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) |
1491 | check = 1; | |
355da1eb | 1492 | } |
be655596 | 1493 | spin_unlock(&ci->i_ceph_lock); |
b0d7c223 | 1494 | mutex_unlock(&ci->i_truncate_mutex); |
9563f88c | 1495 | out: |
355da1eb SW |
1496 | if (check) |
1497 | ceph_check_caps(ci, 0, NULL); | |
355da1eb SW |
1498 | iput(inode); |
1499 | } | |
1500 | ||
1501 | ||
1502 | /* | |
3f99969f | 1503 | * called by trunc_wq; |
355da1eb SW |
1504 | * |
1505 | * We also truncate in a separate thread as well. | |
1506 | */ | |
3c6f6b79 | 1507 | static void ceph_vmtruncate_work(struct work_struct *work) |
355da1eb SW |
1508 | { |
1509 | struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, | |
1510 | i_vmtruncate_work); | |
1511 | struct inode *inode = &ci->vfs_inode; | |
1512 | ||
1513 | dout("vmtruncate_work %p\n", inode); | |
b415bf4f | 1514 | __ceph_do_pending_vmtruncate(inode); |
355da1eb SW |
1515 | iput(inode); |
1516 | } | |
1517 | ||
3c6f6b79 SW |
1518 | /* |
1519 | * Queue an async vmtruncate. If we fail to queue work, we will handle | |
1520 | * the truncation the next time we call __ceph_do_pending_vmtruncate. | |
1521 | */ | |
1522 | void ceph_queue_vmtruncate(struct inode *inode) | |
1523 | { | |
1524 | struct ceph_inode_info *ci = ceph_inode(inode); | |
1525 | ||
15a2015f | 1526 | ihold(inode); |
99ccbd22 | 1527 | |
640ef79d | 1528 | if (queue_work(ceph_sb_to_client(inode->i_sb)->trunc_wq, |
3c6f6b79 SW |
1529 | &ci->i_vmtruncate_work)) { |
1530 | dout("ceph_queue_vmtruncate %p\n", inode); | |
3c6f6b79 SW |
1531 | } else { |
1532 | dout("ceph_queue_vmtruncate %p failed, pending=%d\n", | |
1533 | inode, ci->i_truncate_pending); | |
15a2015f | 1534 | iput(inode); |
3c6f6b79 SW |
1535 | } |
1536 | } | |
1537 | ||
355da1eb | 1538 | /* |
355da1eb SW |
1539 | * Make sure any pending truncation is applied before doing anything |
1540 | * that may depend on it. | |
1541 | */ | |
b415bf4f | 1542 | void __ceph_do_pending_vmtruncate(struct inode *inode) |
355da1eb SW |
1543 | { |
1544 | struct ceph_inode_info *ci = ceph_inode(inode); | |
1545 | u64 to; | |
a85f50b6 | 1546 | int wrbuffer_refs, finish = 0; |
355da1eb | 1547 | |
b0d7c223 | 1548 | mutex_lock(&ci->i_truncate_mutex); |
355da1eb | 1549 | retry: |
be655596 | 1550 | spin_lock(&ci->i_ceph_lock); |
355da1eb SW |
1551 | if (ci->i_truncate_pending == 0) { |
1552 | dout("__do_pending_vmtruncate %p none pending\n", inode); | |
be655596 | 1553 | spin_unlock(&ci->i_ceph_lock); |
b0d7c223 | 1554 | mutex_unlock(&ci->i_truncate_mutex); |
355da1eb SW |
1555 | return; |
1556 | } | |
1557 | ||
1558 | /* | |
1559 | * make sure any dirty snapped pages are flushed before we | |
1560 | * possibly truncate them.. so write AND block! | |
1561 | */ | |
1562 | if (ci->i_wrbuffer_ref_head < ci->i_wrbuffer_ref) { | |
1563 | dout("__do_pending_vmtruncate %p flushing snaps first\n", | |
1564 | inode); | |
be655596 | 1565 | spin_unlock(&ci->i_ceph_lock); |
355da1eb SW |
1566 | filemap_write_and_wait_range(&inode->i_data, 0, |
1567 | inode->i_sb->s_maxbytes); | |
1568 | goto retry; | |
1569 | } | |
1570 | ||
b0d7c223 YZ |
1571 | /* there should be no reader or writer */ |
1572 | WARN_ON_ONCE(ci->i_rd_ref || ci->i_wr_ref); | |
1573 | ||
355da1eb SW |
1574 | to = ci->i_truncate_size; |
1575 | wrbuffer_refs = ci->i_wrbuffer_ref; | |
1576 | dout("__do_pending_vmtruncate %p (%d) to %lld\n", inode, | |
1577 | ci->i_truncate_pending, to); | |
be655596 | 1578 | spin_unlock(&ci->i_ceph_lock); |
355da1eb SW |
1579 | |
1580 | truncate_inode_pages(inode->i_mapping, to); | |
1581 | ||
be655596 | 1582 | spin_lock(&ci->i_ceph_lock); |
a85f50b6 YZ |
1583 | if (to == ci->i_truncate_size) { |
1584 | ci->i_truncate_pending = 0; | |
1585 | finish = 1; | |
1586 | } | |
be655596 | 1587 | spin_unlock(&ci->i_ceph_lock); |
a85f50b6 YZ |
1588 | if (!finish) |
1589 | goto retry; | |
355da1eb | 1590 | |
b0d7c223 YZ |
1591 | mutex_unlock(&ci->i_truncate_mutex); |
1592 | ||
355da1eb SW |
1593 | if (wrbuffer_refs == 0) |
1594 | ceph_check_caps(ci, CHECK_CAPS_AUTHONLY, NULL); | |
a85f50b6 YZ |
1595 | |
1596 | wake_up_all(&ci->i_cap_wq); | |
355da1eb SW |
1597 | } |
1598 | ||
355da1eb SW |
1599 | /* |
1600 | * symlinks | |
1601 | */ | |
1602 | static void *ceph_sym_follow_link(struct dentry *dentry, struct nameidata *nd) | |
1603 | { | |
1604 | struct ceph_inode_info *ci = ceph_inode(dentry->d_inode); | |
1605 | nd_set_link(nd, ci->i_symlink); | |
1606 | return NULL; | |
1607 | } | |
1608 | ||
1609 | static const struct inode_operations ceph_symlink_iops = { | |
1610 | .readlink = generic_readlink, | |
1611 | .follow_link = ceph_sym_follow_link, | |
0b932672 YZ |
1612 | .setattr = ceph_setattr, |
1613 | .getattr = ceph_getattr, | |
1614 | .setxattr = ceph_setxattr, | |
1615 | .getxattr = ceph_getxattr, | |
1616 | .listxattr = ceph_listxattr, | |
1617 | .removexattr = ceph_removexattr, | |
7221fe4c | 1618 | .get_acl = ceph_get_acl, |
355da1eb SW |
1619 | }; |
1620 | ||
1621 | /* | |
1622 | * setattr | |
1623 | */ | |
1624 | int ceph_setattr(struct dentry *dentry, struct iattr *attr) | |
1625 | { | |
1626 | struct inode *inode = dentry->d_inode; | |
1627 | struct ceph_inode_info *ci = ceph_inode(inode); | |
5f21c96d | 1628 | struct inode *parent_inode; |
355da1eb SW |
1629 | const unsigned int ia_valid = attr->ia_valid; |
1630 | struct ceph_mds_request *req; | |
3d14c5d2 | 1631 | struct ceph_mds_client *mdsc = ceph_sb_to_client(dentry->d_sb)->mdsc; |
355da1eb SW |
1632 | int issued; |
1633 | int release = 0, dirtied = 0; | |
1634 | int mask = 0; | |
1635 | int err = 0; | |
fca65b4a | 1636 | int inode_dirty_flags = 0; |
355da1eb SW |
1637 | |
1638 | if (ceph_snap(inode) != CEPH_NOSNAP) | |
1639 | return -EROFS; | |
1640 | ||
355da1eb SW |
1641 | err = inode_change_ok(inode, attr); |
1642 | if (err != 0) | |
1643 | return err; | |
1644 | ||
1645 | req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETATTR, | |
1646 | USE_AUTH_MDS); | |
1647 | if (IS_ERR(req)) | |
1648 | return PTR_ERR(req); | |
1649 | ||
be655596 | 1650 | spin_lock(&ci->i_ceph_lock); |
355da1eb SW |
1651 | issued = __ceph_caps_issued(ci, NULL); |
1652 | dout("setattr %p issued %s\n", inode, ceph_cap_string(issued)); | |
1653 | ||
1654 | if (ia_valid & ATTR_UID) { | |
1655 | dout("setattr %p uid %d -> %d\n", inode, | |
bd2bae6a EB |
1656 | from_kuid(&init_user_ns, inode->i_uid), |
1657 | from_kuid(&init_user_ns, attr->ia_uid)); | |
355da1eb SW |
1658 | if (issued & CEPH_CAP_AUTH_EXCL) { |
1659 | inode->i_uid = attr->ia_uid; | |
1660 | dirtied |= CEPH_CAP_AUTH_EXCL; | |
1661 | } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || | |
ab871b90 EB |
1662 | !uid_eq(attr->ia_uid, inode->i_uid)) { |
1663 | req->r_args.setattr.uid = cpu_to_le32( | |
1664 | from_kuid(&init_user_ns, attr->ia_uid)); | |
355da1eb SW |
1665 | mask |= CEPH_SETATTR_UID; |
1666 | release |= CEPH_CAP_AUTH_SHARED; | |
1667 | } | |
1668 | } | |
1669 | if (ia_valid & ATTR_GID) { | |
1670 | dout("setattr %p gid %d -> %d\n", inode, | |
bd2bae6a EB |
1671 | from_kgid(&init_user_ns, inode->i_gid), |
1672 | from_kgid(&init_user_ns, attr->ia_gid)); | |
355da1eb SW |
1673 | if (issued & CEPH_CAP_AUTH_EXCL) { |
1674 | inode->i_gid = attr->ia_gid; | |
1675 | dirtied |= CEPH_CAP_AUTH_EXCL; | |
1676 | } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || | |
ab871b90 EB |
1677 | !gid_eq(attr->ia_gid, inode->i_gid)) { |
1678 | req->r_args.setattr.gid = cpu_to_le32( | |
1679 | from_kgid(&init_user_ns, attr->ia_gid)); | |
355da1eb SW |
1680 | mask |= CEPH_SETATTR_GID; |
1681 | release |= CEPH_CAP_AUTH_SHARED; | |
1682 | } | |
1683 | } | |
1684 | if (ia_valid & ATTR_MODE) { | |
1685 | dout("setattr %p mode 0%o -> 0%o\n", inode, inode->i_mode, | |
1686 | attr->ia_mode); | |
1687 | if (issued & CEPH_CAP_AUTH_EXCL) { | |
1688 | inode->i_mode = attr->ia_mode; | |
1689 | dirtied |= CEPH_CAP_AUTH_EXCL; | |
1690 | } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || | |
1691 | attr->ia_mode != inode->i_mode) { | |
7221fe4c | 1692 | inode->i_mode = attr->ia_mode; |
355da1eb SW |
1693 | req->r_args.setattr.mode = cpu_to_le32(attr->ia_mode); |
1694 | mask |= CEPH_SETATTR_MODE; | |
1695 | release |= CEPH_CAP_AUTH_SHARED; | |
1696 | } | |
1697 | } | |
1698 | ||
1699 | if (ia_valid & ATTR_ATIME) { | |
1700 | dout("setattr %p atime %ld.%ld -> %ld.%ld\n", inode, | |
1701 | inode->i_atime.tv_sec, inode->i_atime.tv_nsec, | |
1702 | attr->ia_atime.tv_sec, attr->ia_atime.tv_nsec); | |
1703 | if (issued & CEPH_CAP_FILE_EXCL) { | |
1704 | ci->i_time_warp_seq++; | |
1705 | inode->i_atime = attr->ia_atime; | |
1706 | dirtied |= CEPH_CAP_FILE_EXCL; | |
1707 | } else if ((issued & CEPH_CAP_FILE_WR) && | |
1708 | timespec_compare(&inode->i_atime, | |
1709 | &attr->ia_atime) < 0) { | |
1710 | inode->i_atime = attr->ia_atime; | |
1711 | dirtied |= CEPH_CAP_FILE_WR; | |
1712 | } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || | |
1713 | !timespec_equal(&inode->i_atime, &attr->ia_atime)) { | |
1714 | ceph_encode_timespec(&req->r_args.setattr.atime, | |
1715 | &attr->ia_atime); | |
1716 | mask |= CEPH_SETATTR_ATIME; | |
1717 | release |= CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_RD | | |
1718 | CEPH_CAP_FILE_WR; | |
1719 | } | |
1720 | } | |
1721 | if (ia_valid & ATTR_MTIME) { | |
1722 | dout("setattr %p mtime %ld.%ld -> %ld.%ld\n", inode, | |
1723 | inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, | |
1724 | attr->ia_mtime.tv_sec, attr->ia_mtime.tv_nsec); | |
1725 | if (issued & CEPH_CAP_FILE_EXCL) { | |
1726 | ci->i_time_warp_seq++; | |
1727 | inode->i_mtime = attr->ia_mtime; | |
1728 | dirtied |= CEPH_CAP_FILE_EXCL; | |
1729 | } else if ((issued & CEPH_CAP_FILE_WR) && | |
1730 | timespec_compare(&inode->i_mtime, | |
1731 | &attr->ia_mtime) < 0) { | |
1732 | inode->i_mtime = attr->ia_mtime; | |
1733 | dirtied |= CEPH_CAP_FILE_WR; | |
1734 | } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || | |
1735 | !timespec_equal(&inode->i_mtime, &attr->ia_mtime)) { | |
1736 | ceph_encode_timespec(&req->r_args.setattr.mtime, | |
1737 | &attr->ia_mtime); | |
1738 | mask |= CEPH_SETATTR_MTIME; | |
1739 | release |= CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_RD | | |
1740 | CEPH_CAP_FILE_WR; | |
1741 | } | |
1742 | } | |
1743 | if (ia_valid & ATTR_SIZE) { | |
1744 | dout("setattr %p size %lld -> %lld\n", inode, | |
1745 | inode->i_size, attr->ia_size); | |
1746 | if (attr->ia_size > inode->i_sb->s_maxbytes) { | |
1747 | err = -EINVAL; | |
1748 | goto out; | |
1749 | } | |
1750 | if ((issued & CEPH_CAP_FILE_EXCL) && | |
1751 | attr->ia_size > inode->i_size) { | |
1752 | inode->i_size = attr->ia_size; | |
355da1eb SW |
1753 | inode->i_blocks = |
1754 | (attr->ia_size + (1 << 9) - 1) >> 9; | |
1755 | inode->i_ctime = attr->ia_ctime; | |
1756 | ci->i_reported_size = attr->ia_size; | |
1757 | dirtied |= CEPH_CAP_FILE_EXCL; | |
1758 | } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || | |
1759 | attr->ia_size != inode->i_size) { | |
1760 | req->r_args.setattr.size = cpu_to_le64(attr->ia_size); | |
1761 | req->r_args.setattr.old_size = | |
1762 | cpu_to_le64(inode->i_size); | |
1763 | mask |= CEPH_SETATTR_SIZE; | |
1764 | release |= CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_RD | | |
1765 | CEPH_CAP_FILE_WR; | |
1766 | } | |
1767 | } | |
1768 | ||
1769 | /* these do nothing */ | |
1770 | if (ia_valid & ATTR_CTIME) { | |
1771 | bool only = (ia_valid & (ATTR_SIZE|ATTR_MTIME|ATTR_ATIME| | |
1772 | ATTR_MODE|ATTR_UID|ATTR_GID)) == 0; | |
1773 | dout("setattr %p ctime %ld.%ld -> %ld.%ld (%s)\n", inode, | |
1774 | inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, | |
1775 | attr->ia_ctime.tv_sec, attr->ia_ctime.tv_nsec, | |
1776 | only ? "ctime only" : "ignored"); | |
1777 | inode->i_ctime = attr->ia_ctime; | |
1778 | if (only) { | |
1779 | /* | |
1780 | * if kernel wants to dirty ctime but nothing else, | |
1781 | * we need to choose a cap to dirty under, or do | |
1782 | * a almost-no-op setattr | |
1783 | */ | |
1784 | if (issued & CEPH_CAP_AUTH_EXCL) | |
1785 | dirtied |= CEPH_CAP_AUTH_EXCL; | |
1786 | else if (issued & CEPH_CAP_FILE_EXCL) | |
1787 | dirtied |= CEPH_CAP_FILE_EXCL; | |
1788 | else if (issued & CEPH_CAP_XATTR_EXCL) | |
1789 | dirtied |= CEPH_CAP_XATTR_EXCL; | |
1790 | else | |
1791 | mask |= CEPH_SETATTR_CTIME; | |
1792 | } | |
1793 | } | |
1794 | if (ia_valid & ATTR_FILE) | |
1795 | dout("setattr %p ATTR_FILE ... hrm!\n", inode); | |
1796 | ||
1797 | if (dirtied) { | |
fca65b4a | 1798 | inode_dirty_flags = __ceph_mark_dirty_caps(ci, dirtied); |
355da1eb SW |
1799 | inode->i_ctime = CURRENT_TIME; |
1800 | } | |
1801 | ||
1802 | release &= issued; | |
be655596 | 1803 | spin_unlock(&ci->i_ceph_lock); |
355da1eb | 1804 | |
fca65b4a SW |
1805 | if (inode_dirty_flags) |
1806 | __mark_inode_dirty(inode, inode_dirty_flags); | |
1807 | ||
7221fe4c | 1808 | if (ia_valid & ATTR_MODE) { |
4db658ea | 1809 | err = posix_acl_chmod(inode, attr->ia_mode); |
7221fe4c GZ |
1810 | if (err) |
1811 | goto out_put; | |
1812 | } | |
1813 | ||
355da1eb | 1814 | if (mask) { |
70b666c3 SW |
1815 | req->r_inode = inode; |
1816 | ihold(inode); | |
355da1eb SW |
1817 | req->r_inode_drop = release; |
1818 | req->r_args.setattr.mask = cpu_to_le32(mask); | |
1819 | req->r_num_caps = 1; | |
5f21c96d | 1820 | parent_inode = ceph_get_dentry_parent_inode(dentry); |
355da1eb | 1821 | err = ceph_mdsc_do_request(mdsc, parent_inode, req); |
5f21c96d | 1822 | iput(parent_inode); |
355da1eb SW |
1823 | } |
1824 | dout("setattr %p result=%d (%s locally, %d remote)\n", inode, err, | |
1825 | ceph_cap_string(dirtied), mask); | |
1826 | ||
1827 | ceph_mdsc_put_request(req); | |
b0d7c223 YZ |
1828 | if (mask & CEPH_SETATTR_SIZE) |
1829 | __ceph_do_pending_vmtruncate(inode); | |
355da1eb SW |
1830 | return err; |
1831 | out: | |
be655596 | 1832 | spin_unlock(&ci->i_ceph_lock); |
7221fe4c | 1833 | out_put: |
355da1eb SW |
1834 | ceph_mdsc_put_request(req); |
1835 | return err; | |
1836 | } | |
1837 | ||
1838 | /* | |
1839 | * Verify that we have a lease on the given mask. If not, | |
1840 | * do a getattr against an mds. | |
1841 | */ | |
1842 | int ceph_do_getattr(struct inode *inode, int mask) | |
1843 | { | |
3d14c5d2 YS |
1844 | struct ceph_fs_client *fsc = ceph_sb_to_client(inode->i_sb); |
1845 | struct ceph_mds_client *mdsc = fsc->mdsc; | |
355da1eb SW |
1846 | struct ceph_mds_request *req; |
1847 | int err; | |
1848 | ||
1849 | if (ceph_snap(inode) == CEPH_SNAPDIR) { | |
1850 | dout("do_getattr inode %p SNAPDIR\n", inode); | |
1851 | return 0; | |
1852 | } | |
1853 | ||
b7495fc2 | 1854 | dout("do_getattr inode %p mask %s mode 0%o\n", inode, ceph_cap_string(mask), inode->i_mode); |
355da1eb SW |
1855 | if (ceph_caps_issued_mask(ceph_inode(inode), mask, 1)) |
1856 | return 0; | |
1857 | ||
1858 | req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_GETATTR, USE_ANY_MDS); | |
1859 | if (IS_ERR(req)) | |
1860 | return PTR_ERR(req); | |
70b666c3 SW |
1861 | req->r_inode = inode; |
1862 | ihold(inode); | |
355da1eb SW |
1863 | req->r_num_caps = 1; |
1864 | req->r_args.getattr.mask = cpu_to_le32(mask); | |
1865 | err = ceph_mdsc_do_request(mdsc, NULL, req); | |
1866 | ceph_mdsc_put_request(req); | |
1867 | dout("do_getattr result=%d\n", err); | |
1868 | return err; | |
1869 | } | |
1870 | ||
1871 | ||
1872 | /* | |
1873 | * Check inode permissions. We verify we have a valid value for | |
1874 | * the AUTH cap, then call the generic handler. | |
1875 | */ | |
10556cb2 | 1876 | int ceph_permission(struct inode *inode, int mask) |
355da1eb | 1877 | { |
b74c79e9 NP |
1878 | int err; |
1879 | ||
10556cb2 | 1880 | if (mask & MAY_NOT_BLOCK) |
b74c79e9 NP |
1881 | return -ECHILD; |
1882 | ||
1883 | err = ceph_do_getattr(inode, CEPH_CAP_AUTH_SHARED); | |
355da1eb SW |
1884 | |
1885 | if (!err) | |
2830ba7f | 1886 | err = generic_permission(inode, mask); |
355da1eb SW |
1887 | return err; |
1888 | } | |
1889 | ||
1890 | /* | |
1891 | * Get all attributes. Hopefully somedata we'll have a statlite() | |
1892 | * and can limit the fields we require to be accurate. | |
1893 | */ | |
1894 | int ceph_getattr(struct vfsmount *mnt, struct dentry *dentry, | |
1895 | struct kstat *stat) | |
1896 | { | |
1897 | struct inode *inode = dentry->d_inode; | |
232d4b01 | 1898 | struct ceph_inode_info *ci = ceph_inode(inode); |
355da1eb SW |
1899 | int err; |
1900 | ||
1901 | err = ceph_do_getattr(inode, CEPH_STAT_CAP_INODE_ALL); | |
1902 | if (!err) { | |
1903 | generic_fillattr(inode, stat); | |
ad1fee96 | 1904 | stat->ino = ceph_translate_ino(inode->i_sb, inode->i_ino); |
355da1eb SW |
1905 | if (ceph_snap(inode) != CEPH_NOSNAP) |
1906 | stat->dev = ceph_snap(inode); | |
1907 | else | |
1908 | stat->dev = 0; | |
232d4b01 | 1909 | if (S_ISDIR(inode->i_mode)) { |
1c1266bb YS |
1910 | if (ceph_test_mount_opt(ceph_sb_to_client(inode->i_sb), |
1911 | RBYTES)) | |
1912 | stat->size = ci->i_rbytes; | |
1913 | else | |
1914 | stat->size = ci->i_files + ci->i_subdirs; | |
232d4b01 | 1915 | stat->blocks = 0; |
355da1eb | 1916 | stat->blksize = 65536; |
232d4b01 | 1917 | } |
355da1eb SW |
1918 | } |
1919 | return err; | |
1920 | } |