Commit | Line | Data |
---|---|---|
b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
3d14c5d2 | 2 | #include <linux/ceph/ceph_debug.h> |
355da1eb SW |
3 | |
4 | #include <linux/module.h> | |
5 | #include <linux/fs.h> | |
355da1eb SW |
6 | #include <linux/slab.h> |
7 | #include <linux/string.h> | |
8 | #include <linux/uaccess.h> | |
9 | #include <linux/kernel.h> | |
355da1eb SW |
10 | #include <linux/writeback.h> |
11 | #include <linux/vmalloc.h> | |
2cdeb1e4 | 12 | #include <linux/xattr.h> |
4db658ea | 13 | #include <linux/posix_acl.h> |
3e7fbe9c | 14 | #include <linux/random.h> |
a407846e | 15 | #include <linux/sort.h> |
355da1eb SW |
16 | |
17 | #include "super.h" | |
3d14c5d2 | 18 | #include "mds_client.h" |
99ccbd22 | 19 | #include "cache.h" |
3d14c5d2 | 20 | #include <linux/ceph/decode.h> |
355da1eb SW |
21 | |
22 | /* | |
23 | * Ceph inode operations | |
24 | * | |
25 | * Implement basic inode helpers (get, alloc) and inode ops (getattr, | |
26 | * setattr, etc.), xattr helpers, and helpers for assimilating | |
27 | * metadata returned by the MDS into our cache. | |
28 | * | |
29 | * Also define helpers for doing asynchronous writeback, invalidation, | |
30 | * and truncation for the benefit of those who can't afford to block | |
31 | * (typically because they are in the message handler path). | |
32 | */ | |
33 | ||
34 | static const struct inode_operations ceph_symlink_iops; | |
35 | ||
3c6f6b79 SW |
36 | static void ceph_invalidate_work(struct work_struct *work); |
37 | static void ceph_writeback_work(struct work_struct *work); | |
38 | static void ceph_vmtruncate_work(struct work_struct *work); | |
355da1eb SW |
39 | |
40 | /* | |
41 | * find or create an inode, given the ceph ino number | |
42 | */ | |
ad1fee96 YS |
43 | static int ceph_set_ino_cb(struct inode *inode, void *data) |
44 | { | |
45 | ceph_inode(inode)->i_vino = *(struct ceph_vino *)data; | |
46 | inode->i_ino = ceph_vino_to_ino(*(struct ceph_vino *)data); | |
47 | return 0; | |
48 | } | |
49 | ||
355da1eb SW |
50 | struct inode *ceph_get_inode(struct super_block *sb, struct ceph_vino vino) |
51 | { | |
52 | struct inode *inode; | |
53 | ino_t t = ceph_vino_to_ino(vino); | |
54 | ||
55 | inode = iget5_locked(sb, t, ceph_ino_compare, ceph_set_ino_cb, &vino); | |
d37b1d99 | 56 | if (!inode) |
355da1eb SW |
57 | return ERR_PTR(-ENOMEM); |
58 | if (inode->i_state & I_NEW) { | |
59 | dout("get_inode created new inode %p %llx.%llx ino %llx\n", | |
60 | inode, ceph_vinop(inode), (u64)inode->i_ino); | |
61 | unlock_new_inode(inode); | |
62 | } | |
63 | ||
64 | dout("get_inode on %lu=%llx.%llx got %p\n", inode->i_ino, vino.ino, | |
65 | vino.snap, inode); | |
66 | return inode; | |
67 | } | |
68 | ||
69 | /* | |
70 | * get/constuct snapdir inode for a given directory | |
71 | */ | |
72 | struct inode *ceph_get_snapdir(struct inode *parent) | |
73 | { | |
74 | struct ceph_vino vino = { | |
75 | .ino = ceph_ino(parent), | |
76 | .snap = CEPH_SNAPDIR, | |
77 | }; | |
78 | struct inode *inode = ceph_get_inode(parent->i_sb, vino); | |
b377ff13 | 79 | struct ceph_inode_info *ci = ceph_inode(inode); |
355da1eb SW |
80 | |
81 | BUG_ON(!S_ISDIR(parent->i_mode)); | |
82 | if (IS_ERR(inode)) | |
7e34bc52 | 83 | return inode; |
355da1eb SW |
84 | inode->i_mode = parent->i_mode; |
85 | inode->i_uid = parent->i_uid; | |
86 | inode->i_gid = parent->i_gid; | |
38c48b5f YZ |
87 | inode->i_op = &ceph_snapdir_iops; |
88 | inode->i_fop = &ceph_snapdir_fops; | |
b377ff13 SW |
89 | ci->i_snap_caps = CEPH_CAP_PIN; /* so we can open */ |
90 | ci->i_rbytes = 0; | |
355da1eb SW |
91 | return inode; |
92 | } | |
93 | ||
94 | const struct inode_operations ceph_file_iops = { | |
95 | .permission = ceph_permission, | |
96 | .setattr = ceph_setattr, | |
97 | .getattr = ceph_getattr, | |
355da1eb | 98 | .listxattr = ceph_listxattr, |
7221fe4c | 99 | .get_acl = ceph_get_acl, |
72466d0b | 100 | .set_acl = ceph_set_acl, |
355da1eb SW |
101 | }; |
102 | ||
103 | ||
104 | /* | |
105 | * We use a 'frag tree' to keep track of the MDS's directory fragments | |
106 | * for a given inode (usually there is just a single fragment). We | |
107 | * need to know when a child frag is delegated to a new MDS, or when | |
108 | * it is flagged as replicated, so we can direct our requests | |
109 | * accordingly. | |
110 | */ | |
111 | ||
112 | /* | |
113 | * find/create a frag in the tree | |
114 | */ | |
115 | static struct ceph_inode_frag *__get_or_create_frag(struct ceph_inode_info *ci, | |
116 | u32 f) | |
117 | { | |
118 | struct rb_node **p; | |
119 | struct rb_node *parent = NULL; | |
120 | struct ceph_inode_frag *frag; | |
121 | int c; | |
122 | ||
123 | p = &ci->i_fragtree.rb_node; | |
124 | while (*p) { | |
125 | parent = *p; | |
126 | frag = rb_entry(parent, struct ceph_inode_frag, node); | |
127 | c = ceph_frag_compare(f, frag->frag); | |
128 | if (c < 0) | |
129 | p = &(*p)->rb_left; | |
130 | else if (c > 0) | |
131 | p = &(*p)->rb_right; | |
132 | else | |
133 | return frag; | |
134 | } | |
135 | ||
136 | frag = kmalloc(sizeof(*frag), GFP_NOFS); | |
51308806 | 137 | if (!frag) |
355da1eb | 138 | return ERR_PTR(-ENOMEM); |
51308806 | 139 | |
355da1eb SW |
140 | frag->frag = f; |
141 | frag->split_by = 0; | |
142 | frag->mds = -1; | |
143 | frag->ndist = 0; | |
144 | ||
145 | rb_link_node(&frag->node, parent, p); | |
146 | rb_insert_color(&frag->node, &ci->i_fragtree); | |
147 | ||
148 | dout("get_or_create_frag added %llx.%llx frag %x\n", | |
149 | ceph_vinop(&ci->vfs_inode), f); | |
150 | return frag; | |
151 | } | |
152 | ||
153 | /* | |
154 | * find a specific frag @f | |
155 | */ | |
156 | struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, u32 f) | |
157 | { | |
158 | struct rb_node *n = ci->i_fragtree.rb_node; | |
159 | ||
160 | while (n) { | |
161 | struct ceph_inode_frag *frag = | |
162 | rb_entry(n, struct ceph_inode_frag, node); | |
163 | int c = ceph_frag_compare(f, frag->frag); | |
164 | if (c < 0) | |
165 | n = n->rb_left; | |
166 | else if (c > 0) | |
167 | n = n->rb_right; | |
168 | else | |
169 | return frag; | |
170 | } | |
171 | return NULL; | |
172 | } | |
173 | ||
174 | /* | |
175 | * Choose frag containing the given value @v. If @pfrag is | |
176 | * specified, copy the frag delegation info to the caller if | |
177 | * it is present. | |
178 | */ | |
3e7fbe9c YZ |
179 | static u32 __ceph_choose_frag(struct ceph_inode_info *ci, u32 v, |
180 | struct ceph_inode_frag *pfrag, int *found) | |
355da1eb SW |
181 | { |
182 | u32 t = ceph_frag_make(0, 0); | |
183 | struct ceph_inode_frag *frag; | |
184 | unsigned nway, i; | |
185 | u32 n; | |
186 | ||
187 | if (found) | |
188 | *found = 0; | |
189 | ||
355da1eb SW |
190 | while (1) { |
191 | WARN_ON(!ceph_frag_contains_value(t, v)); | |
192 | frag = __ceph_find_frag(ci, t); | |
193 | if (!frag) | |
194 | break; /* t is a leaf */ | |
195 | if (frag->split_by == 0) { | |
196 | if (pfrag) | |
197 | memcpy(pfrag, frag, sizeof(*pfrag)); | |
198 | if (found) | |
199 | *found = 1; | |
200 | break; | |
201 | } | |
202 | ||
203 | /* choose child */ | |
204 | nway = 1 << frag->split_by; | |
205 | dout("choose_frag(%x) %x splits by %d (%d ways)\n", v, t, | |
206 | frag->split_by, nway); | |
207 | for (i = 0; i < nway; i++) { | |
208 | n = ceph_frag_make_child(t, frag->split_by, i); | |
209 | if (ceph_frag_contains_value(n, v)) { | |
210 | t = n; | |
211 | break; | |
212 | } | |
213 | } | |
214 | BUG_ON(i == nway); | |
215 | } | |
216 | dout("choose_frag(%x) = %x\n", v, t); | |
217 | ||
355da1eb SW |
218 | return t; |
219 | } | |
220 | ||
3e7fbe9c YZ |
221 | u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v, |
222 | struct ceph_inode_frag *pfrag, int *found) | |
223 | { | |
224 | u32 ret; | |
225 | mutex_lock(&ci->i_fragtree_mutex); | |
226 | ret = __ceph_choose_frag(ci, v, pfrag, found); | |
227 | mutex_unlock(&ci->i_fragtree_mutex); | |
228 | return ret; | |
229 | } | |
230 | ||
355da1eb SW |
231 | /* |
232 | * Process dirfrag (delegation) info from the mds. Include leaf | |
233 | * fragment in tree ONLY if ndist > 0. Otherwise, only | |
234 | * branches/splits are included in i_fragtree) | |
235 | */ | |
236 | static int ceph_fill_dirfrag(struct inode *inode, | |
237 | struct ceph_mds_reply_dirfrag *dirinfo) | |
238 | { | |
239 | struct ceph_inode_info *ci = ceph_inode(inode); | |
240 | struct ceph_inode_frag *frag; | |
241 | u32 id = le32_to_cpu(dirinfo->frag); | |
242 | int mds = le32_to_cpu(dirinfo->auth); | |
243 | int ndist = le32_to_cpu(dirinfo->ndist); | |
8d08503c | 244 | int diri_auth = -1; |
355da1eb SW |
245 | int i; |
246 | int err = 0; | |
247 | ||
8d08503c YZ |
248 | spin_lock(&ci->i_ceph_lock); |
249 | if (ci->i_auth_cap) | |
250 | diri_auth = ci->i_auth_cap->mds; | |
251 | spin_unlock(&ci->i_ceph_lock); | |
252 | ||
42172119 YZ |
253 | if (mds == -1) /* CDIR_AUTH_PARENT */ |
254 | mds = diri_auth; | |
255 | ||
355da1eb | 256 | mutex_lock(&ci->i_fragtree_mutex); |
8d08503c | 257 | if (ndist == 0 && mds == diri_auth) { |
355da1eb SW |
258 | /* no delegation info needed. */ |
259 | frag = __ceph_find_frag(ci, id); | |
260 | if (!frag) | |
261 | goto out; | |
262 | if (frag->split_by == 0) { | |
263 | /* tree leaf, remove */ | |
264 | dout("fill_dirfrag removed %llx.%llx frag %x" | |
265 | " (no ref)\n", ceph_vinop(inode), id); | |
266 | rb_erase(&frag->node, &ci->i_fragtree); | |
267 | kfree(frag); | |
268 | } else { | |
269 | /* tree branch, keep and clear */ | |
270 | dout("fill_dirfrag cleared %llx.%llx frag %x" | |
271 | " referral\n", ceph_vinop(inode), id); | |
272 | frag->mds = -1; | |
273 | frag->ndist = 0; | |
274 | } | |
275 | goto out; | |
276 | } | |
277 | ||
278 | ||
279 | /* find/add this frag to store mds delegation info */ | |
280 | frag = __get_or_create_frag(ci, id); | |
281 | if (IS_ERR(frag)) { | |
282 | /* this is not the end of the world; we can continue | |
283 | with bad/inaccurate delegation info */ | |
284 | pr_err("fill_dirfrag ENOMEM on mds ref %llx.%llx fg %x\n", | |
285 | ceph_vinop(inode), le32_to_cpu(dirinfo->frag)); | |
286 | err = -ENOMEM; | |
287 | goto out; | |
288 | } | |
289 | ||
290 | frag->mds = mds; | |
291 | frag->ndist = min_t(u32, ndist, CEPH_MAX_DIRFRAG_REP); | |
292 | for (i = 0; i < frag->ndist; i++) | |
293 | frag->dist[i] = le32_to_cpu(dirinfo->dist[i]); | |
294 | dout("fill_dirfrag %llx.%llx frag %x ndist=%d\n", | |
295 | ceph_vinop(inode), frag->frag, frag->ndist); | |
296 | ||
297 | out: | |
298 | mutex_unlock(&ci->i_fragtree_mutex); | |
299 | return err; | |
300 | } | |
301 | ||
a407846e YZ |
302 | static int frag_tree_split_cmp(const void *l, const void *r) |
303 | { | |
304 | struct ceph_frag_tree_split *ls = (struct ceph_frag_tree_split*)l; | |
305 | struct ceph_frag_tree_split *rs = (struct ceph_frag_tree_split*)r; | |
fe2ed425 JL |
306 | return ceph_frag_compare(le32_to_cpu(ls->frag), |
307 | le32_to_cpu(rs->frag)); | |
a407846e YZ |
308 | } |
309 | ||
a4b7431f YZ |
310 | static bool is_frag_child(u32 f, struct ceph_inode_frag *frag) |
311 | { | |
312 | if (!frag) | |
313 | return f == ceph_frag_make(0, 0); | |
314 | if (ceph_frag_bits(f) != ceph_frag_bits(frag->frag) + frag->split_by) | |
315 | return false; | |
316 | return ceph_frag_contains_value(frag->frag, ceph_frag_value(f)); | |
317 | } | |
318 | ||
3e7fbe9c YZ |
319 | static int ceph_fill_fragtree(struct inode *inode, |
320 | struct ceph_frag_tree_head *fragtree, | |
321 | struct ceph_mds_reply_dirfrag *dirinfo) | |
322 | { | |
323 | struct ceph_inode_info *ci = ceph_inode(inode); | |
a4b7431f | 324 | struct ceph_inode_frag *frag, *prev_frag = NULL; |
3e7fbe9c | 325 | struct rb_node *rb_node; |
1b1bc16d YZ |
326 | unsigned i, split_by, nsplits; |
327 | u32 id; | |
3e7fbe9c YZ |
328 | bool update = false; |
329 | ||
330 | mutex_lock(&ci->i_fragtree_mutex); | |
331 | nsplits = le32_to_cpu(fragtree->nsplits); | |
1b1bc16d YZ |
332 | if (nsplits != ci->i_fragtree_nsplits) { |
333 | update = true; | |
334 | } else if (nsplits) { | |
3e7fbe9c YZ |
335 | i = prandom_u32() % nsplits; |
336 | id = le32_to_cpu(fragtree->splits[i].frag); | |
337 | if (!__ceph_find_frag(ci, id)) | |
338 | update = true; | |
339 | } else if (!RB_EMPTY_ROOT(&ci->i_fragtree)) { | |
340 | rb_node = rb_first(&ci->i_fragtree); | |
341 | frag = rb_entry(rb_node, struct ceph_inode_frag, node); | |
342 | if (frag->frag != ceph_frag_make(0, 0) || rb_next(rb_node)) | |
343 | update = true; | |
344 | } | |
345 | if (!update && dirinfo) { | |
346 | id = le32_to_cpu(dirinfo->frag); | |
347 | if (id != __ceph_choose_frag(ci, id, NULL, NULL)) | |
348 | update = true; | |
349 | } | |
350 | if (!update) | |
351 | goto out_unlock; | |
352 | ||
a407846e YZ |
353 | if (nsplits > 1) { |
354 | sort(fragtree->splits, nsplits, sizeof(fragtree->splits[0]), | |
355 | frag_tree_split_cmp, NULL); | |
356 | } | |
357 | ||
3e7fbe9c YZ |
358 | dout("fill_fragtree %llx.%llx\n", ceph_vinop(inode)); |
359 | rb_node = rb_first(&ci->i_fragtree); | |
360 | for (i = 0; i < nsplits; i++) { | |
361 | id = le32_to_cpu(fragtree->splits[i].frag); | |
1b1bc16d YZ |
362 | split_by = le32_to_cpu(fragtree->splits[i].by); |
363 | if (split_by == 0 || ceph_frag_bits(id) + split_by > 24) { | |
364 | pr_err("fill_fragtree %llx.%llx invalid split %d/%u, " | |
365 | "frag %x split by %d\n", ceph_vinop(inode), | |
366 | i, nsplits, id, split_by); | |
367 | continue; | |
368 | } | |
3e7fbe9c YZ |
369 | frag = NULL; |
370 | while (rb_node) { | |
371 | frag = rb_entry(rb_node, struct ceph_inode_frag, node); | |
372 | if (ceph_frag_compare(frag->frag, id) >= 0) { | |
373 | if (frag->frag != id) | |
374 | frag = NULL; | |
375 | else | |
376 | rb_node = rb_next(rb_node); | |
377 | break; | |
378 | } | |
379 | rb_node = rb_next(rb_node); | |
a4b7431f YZ |
380 | /* delete stale split/leaf node */ |
381 | if (frag->split_by > 0 || | |
382 | !is_frag_child(frag->frag, prev_frag)) { | |
383 | rb_erase(&frag->node, &ci->i_fragtree); | |
1b1bc16d YZ |
384 | if (frag->split_by > 0) |
385 | ci->i_fragtree_nsplits--; | |
a4b7431f YZ |
386 | kfree(frag); |
387 | } | |
3e7fbe9c YZ |
388 | frag = NULL; |
389 | } | |
390 | if (!frag) { | |
391 | frag = __get_or_create_frag(ci, id); | |
392 | if (IS_ERR(frag)) | |
393 | continue; | |
394 | } | |
1b1bc16d YZ |
395 | if (frag->split_by == 0) |
396 | ci->i_fragtree_nsplits++; | |
397 | frag->split_by = split_by; | |
3e7fbe9c | 398 | dout(" frag %x split by %d\n", frag->frag, frag->split_by); |
a4b7431f | 399 | prev_frag = frag; |
3e7fbe9c YZ |
400 | } |
401 | while (rb_node) { | |
402 | frag = rb_entry(rb_node, struct ceph_inode_frag, node); | |
403 | rb_node = rb_next(rb_node); | |
a4b7431f YZ |
404 | /* delete stale split/leaf node */ |
405 | if (frag->split_by > 0 || | |
406 | !is_frag_child(frag->frag, prev_frag)) { | |
407 | rb_erase(&frag->node, &ci->i_fragtree); | |
1b1bc16d YZ |
408 | if (frag->split_by > 0) |
409 | ci->i_fragtree_nsplits--; | |
a4b7431f YZ |
410 | kfree(frag); |
411 | } | |
3e7fbe9c YZ |
412 | } |
413 | out_unlock: | |
414 | mutex_unlock(&ci->i_fragtree_mutex); | |
415 | return 0; | |
416 | } | |
355da1eb SW |
417 | |
418 | /* | |
419 | * initialize a newly allocated inode. | |
420 | */ | |
421 | struct inode *ceph_alloc_inode(struct super_block *sb) | |
422 | { | |
423 | struct ceph_inode_info *ci; | |
424 | int i; | |
425 | ||
426 | ci = kmem_cache_alloc(ceph_inode_cachep, GFP_NOFS); | |
427 | if (!ci) | |
428 | return NULL; | |
429 | ||
430 | dout("alloc_inode %p\n", &ci->vfs_inode); | |
431 | ||
be655596 SW |
432 | spin_lock_init(&ci->i_ceph_lock); |
433 | ||
355da1eb | 434 | ci->i_version = 0; |
31c542a1 | 435 | ci->i_inline_version = 0; |
355da1eb SW |
436 | ci->i_time_warp_seq = 0; |
437 | ci->i_ceph_flags = 0; | |
fdd4e158 YZ |
438 | atomic64_set(&ci->i_ordered_count, 1); |
439 | atomic64_set(&ci->i_release_count, 1); | |
440 | atomic64_set(&ci->i_complete_seq[0], 0); | |
441 | atomic64_set(&ci->i_complete_seq[1], 0); | |
355da1eb SW |
442 | ci->i_symlink = NULL; |
443 | ||
fb18a575 LH |
444 | ci->i_max_bytes = 0; |
445 | ci->i_max_files = 0; | |
446 | ||
6c0f3af7 | 447 | memset(&ci->i_dir_layout, 0, sizeof(ci->i_dir_layout)); |
30c156d9 | 448 | RCU_INIT_POINTER(ci->i_layout.pool_ns, NULL); |
6c0f3af7 | 449 | |
355da1eb SW |
450 | ci->i_fragtree = RB_ROOT; |
451 | mutex_init(&ci->i_fragtree_mutex); | |
452 | ||
453 | ci->i_xattrs.blob = NULL; | |
454 | ci->i_xattrs.prealloc_blob = NULL; | |
455 | ci->i_xattrs.dirty = false; | |
456 | ci->i_xattrs.index = RB_ROOT; | |
457 | ci->i_xattrs.count = 0; | |
458 | ci->i_xattrs.names_size = 0; | |
459 | ci->i_xattrs.vals_size = 0; | |
460 | ci->i_xattrs.version = 0; | |
461 | ci->i_xattrs.index_version = 0; | |
462 | ||
463 | ci->i_caps = RB_ROOT; | |
464 | ci->i_auth_cap = NULL; | |
465 | ci->i_dirty_caps = 0; | |
466 | ci->i_flushing_caps = 0; | |
467 | INIT_LIST_HEAD(&ci->i_dirty_item); | |
468 | INIT_LIST_HEAD(&ci->i_flushing_item); | |
f66fd9f0 | 469 | ci->i_prealloc_cap_flush = NULL; |
e4500b5e | 470 | INIT_LIST_HEAD(&ci->i_cap_flush_list); |
355da1eb SW |
471 | init_waitqueue_head(&ci->i_cap_wq); |
472 | ci->i_hold_caps_min = 0; | |
473 | ci->i_hold_caps_max = 0; | |
474 | INIT_LIST_HEAD(&ci->i_cap_delay_list); | |
355da1eb SW |
475 | INIT_LIST_HEAD(&ci->i_cap_snaps); |
476 | ci->i_head_snapc = NULL; | |
477 | ci->i_snap_caps = 0; | |
478 | ||
774a6a11 | 479 | for (i = 0; i < CEPH_FILE_MODE_BITS; i++) |
355da1eb SW |
480 | ci->i_nr_by_mode[i] = 0; |
481 | ||
b0d7c223 | 482 | mutex_init(&ci->i_truncate_mutex); |
355da1eb SW |
483 | ci->i_truncate_seq = 0; |
484 | ci->i_truncate_size = 0; | |
485 | ci->i_truncate_pending = 0; | |
486 | ||
487 | ci->i_max_size = 0; | |
488 | ci->i_reported_size = 0; | |
489 | ci->i_wanted_max_size = 0; | |
490 | ci->i_requested_max_size = 0; | |
491 | ||
492 | ci->i_pin_ref = 0; | |
493 | ci->i_rd_ref = 0; | |
494 | ci->i_rdcache_ref = 0; | |
495 | ci->i_wr_ref = 0; | |
d3d0720d | 496 | ci->i_wb_ref = 0; |
355da1eb SW |
497 | ci->i_wrbuffer_ref = 0; |
498 | ci->i_wrbuffer_ref_head = 0; | |
89aa5930 | 499 | atomic_set(&ci->i_filelock_ref, 0); |
97aeb6bf | 500 | atomic_set(&ci->i_shared_gen, 0); |
355da1eb SW |
501 | ci->i_rdcache_gen = 0; |
502 | ci->i_rdcache_revoking = 0; | |
503 | ||
355da1eb | 504 | INIT_LIST_HEAD(&ci->i_unsafe_dirops); |
68cd5b4b | 505 | INIT_LIST_HEAD(&ci->i_unsafe_iops); |
355da1eb SW |
506 | spin_lock_init(&ci->i_unsafe_lock); |
507 | ||
508 | ci->i_snap_realm = NULL; | |
509 | INIT_LIST_HEAD(&ci->i_snap_realm_item); | |
510 | INIT_LIST_HEAD(&ci->i_snap_flush_item); | |
511 | ||
3c6f6b79 SW |
512 | INIT_WORK(&ci->i_wb_work, ceph_writeback_work); |
513 | INIT_WORK(&ci->i_pg_inv_work, ceph_invalidate_work); | |
355da1eb SW |
514 | |
515 | INIT_WORK(&ci->i_vmtruncate_work, ceph_vmtruncate_work); | |
516 | ||
99ccbd22 MT |
517 | ceph_fscache_inode_init(ci); |
518 | ||
355da1eb SW |
519 | return &ci->vfs_inode; |
520 | } | |
521 | ||
fa0d7e3d NP |
522 | static void ceph_i_callback(struct rcu_head *head) |
523 | { | |
524 | struct inode *inode = container_of(head, struct inode, i_rcu); | |
525 | struct ceph_inode_info *ci = ceph_inode(inode); | |
526 | ||
fa0d7e3d NP |
527 | kmem_cache_free(ceph_inode_cachep, ci); |
528 | } | |
529 | ||
355da1eb SW |
530 | void ceph_destroy_inode(struct inode *inode) |
531 | { | |
532 | struct ceph_inode_info *ci = ceph_inode(inode); | |
533 | struct ceph_inode_frag *frag; | |
534 | struct rb_node *n; | |
535 | ||
536 | dout("destroy_inode %p ino %llx.%llx\n", inode, ceph_vinop(inode)); | |
537 | ||
99ccbd22 MT |
538 | ceph_fscache_unregister_inode_cookie(ci); |
539 | ||
355da1eb SW |
540 | ceph_queue_caps_release(inode); |
541 | ||
d557c48d LH |
542 | if (__ceph_has_any_quota(ci)) |
543 | ceph_adjust_quota_realms_count(inode, false); | |
544 | ||
8b218b8a SW |
545 | /* |
546 | * we may still have a snap_realm reference if there are stray | |
d9df2783 | 547 | * caps in i_snap_caps. |
8b218b8a SW |
548 | */ |
549 | if (ci->i_snap_realm) { | |
550 | struct ceph_mds_client *mdsc = | |
3d14c5d2 | 551 | ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc; |
8b218b8a SW |
552 | struct ceph_snap_realm *realm = ci->i_snap_realm; |
553 | ||
554 | dout(" dropping residual ref to snap realm %p\n", realm); | |
555 | spin_lock(&realm->inodes_with_caps_lock); | |
556 | list_del_init(&ci->i_snap_realm_item); | |
e3161f17 LH |
557 | ci->i_snap_realm = NULL; |
558 | if (realm->ino == ci->i_vino.ino) | |
559 | realm->inode = NULL; | |
8b218b8a SW |
560 | spin_unlock(&realm->inodes_with_caps_lock); |
561 | ceph_put_snap_realm(mdsc, realm); | |
562 | } | |
563 | ||
355da1eb SW |
564 | kfree(ci->i_symlink); |
565 | while ((n = rb_first(&ci->i_fragtree)) != NULL) { | |
566 | frag = rb_entry(n, struct ceph_inode_frag, node); | |
567 | rb_erase(n, &ci->i_fragtree); | |
568 | kfree(frag); | |
569 | } | |
1b1bc16d | 570 | ci->i_fragtree_nsplits = 0; |
355da1eb SW |
571 | |
572 | __ceph_destroy_xattrs(ci); | |
b6c1d5b8 SW |
573 | if (ci->i_xattrs.blob) |
574 | ceph_buffer_put(ci->i_xattrs.blob); | |
575 | if (ci->i_xattrs.prealloc_blob) | |
576 | ceph_buffer_put(ci->i_xattrs.prealloc_blob); | |
355da1eb | 577 | |
779fe0fb | 578 | ceph_put_string(rcu_dereference_raw(ci->i_layout.pool_ns)); |
30c156d9 | 579 | |
fa0d7e3d | 580 | call_rcu(&inode->i_rcu, ceph_i_callback); |
355da1eb SW |
581 | } |
582 | ||
9f12bd11 YZ |
583 | int ceph_drop_inode(struct inode *inode) |
584 | { | |
585 | /* | |
586 | * Positve dentry and corresponding inode are always accompanied | |
587 | * in MDS reply. So no need to keep inode in the cache after | |
588 | * dropping all its aliases. | |
589 | */ | |
590 | return 1; | |
591 | } | |
592 | ||
224a7542 YZ |
593 | static inline blkcnt_t calc_inode_blocks(u64 size) |
594 | { | |
595 | return (size + (1<<9) - 1) >> 9; | |
596 | } | |
597 | ||
355da1eb SW |
598 | /* |
599 | * Helpers to fill in size, ctime, mtime, and atime. We have to be | |
600 | * careful because either the client or MDS may have more up to date | |
601 | * info, depending on which capabilities are held, and whether | |
602 | * time_warp_seq or truncate_seq have increased. (Ordinarily, mtime | |
603 | * and size are monotonically increasing, except when utimes() or | |
604 | * truncate() increments the corresponding _seq values.) | |
605 | */ | |
606 | int ceph_fill_file_size(struct inode *inode, int issued, | |
607 | u32 truncate_seq, u64 truncate_size, u64 size) | |
608 | { | |
609 | struct ceph_inode_info *ci = ceph_inode(inode); | |
610 | int queue_trunc = 0; | |
611 | ||
612 | if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) > 0 || | |
613 | (truncate_seq == ci->i_truncate_seq && size > inode->i_size)) { | |
614 | dout("size %lld -> %llu\n", inode->i_size, size); | |
a3d714c3 YZ |
615 | if (size > 0 && S_ISDIR(inode->i_mode)) { |
616 | pr_err("fill_file_size non-zero size for directory\n"); | |
617 | size = 0; | |
618 | } | |
99c88e69 | 619 | i_size_write(inode, size); |
224a7542 | 620 | inode->i_blocks = calc_inode_blocks(size); |
355da1eb SW |
621 | ci->i_reported_size = size; |
622 | if (truncate_seq != ci->i_truncate_seq) { | |
623 | dout("truncate_seq %u -> %u\n", | |
624 | ci->i_truncate_seq, truncate_seq); | |
625 | ci->i_truncate_seq = truncate_seq; | |
b0d7c223 YZ |
626 | |
627 | /* the MDS should have revoked these caps */ | |
628 | WARN_ON_ONCE(issued & (CEPH_CAP_FILE_EXCL | | |
629 | CEPH_CAP_FILE_RD | | |
630 | CEPH_CAP_FILE_WR | | |
631 | CEPH_CAP_FILE_LAZYIO)); | |
3d497d85 YS |
632 | /* |
633 | * If we hold relevant caps, or in the case where we're | |
634 | * not the only client referencing this file and we | |
635 | * don't hold those caps, then we need to check whether | |
636 | * the file is either opened or mmaped | |
637 | */ | |
b0d7c223 YZ |
638 | if ((issued & (CEPH_CAP_FILE_CACHE| |
639 | CEPH_CAP_FILE_BUFFER)) || | |
3d497d85 YS |
640 | mapping_mapped(inode->i_mapping) || |
641 | __ceph_caps_file_wanted(ci)) { | |
355da1eb SW |
642 | ci->i_truncate_pending++; |
643 | queue_trunc = 1; | |
644 | } | |
645 | } | |
646 | } | |
647 | if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) >= 0 && | |
648 | ci->i_truncate_size != truncate_size) { | |
649 | dout("truncate_size %lld -> %llu\n", ci->i_truncate_size, | |
650 | truncate_size); | |
651 | ci->i_truncate_size = truncate_size; | |
652 | } | |
99ccbd22 MT |
653 | |
654 | if (queue_trunc) | |
655 | ceph_fscache_invalidate(inode); | |
656 | ||
355da1eb SW |
657 | return queue_trunc; |
658 | } | |
659 | ||
660 | void ceph_fill_file_time(struct inode *inode, int issued, | |
661 | u64 time_warp_seq, struct timespec *ctime, | |
662 | struct timespec *mtime, struct timespec *atime) | |
663 | { | |
664 | struct ceph_inode_info *ci = ceph_inode(inode); | |
665 | int warn = 0; | |
666 | ||
667 | if (issued & (CEPH_CAP_FILE_EXCL| | |
668 | CEPH_CAP_FILE_WR| | |
d8672d64 SW |
669 | CEPH_CAP_FILE_BUFFER| |
670 | CEPH_CAP_AUTH_EXCL| | |
671 | CEPH_CAP_XATTR_EXCL)) { | |
ffdeec7a YZ |
672 | if (ci->i_version == 0 || |
673 | timespec_compare(ctime, &inode->i_ctime) > 0) { | |
355da1eb SW |
674 | dout("ctime %ld.%09ld -> %ld.%09ld inc w/ cap\n", |
675 | inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, | |
676 | ctime->tv_sec, ctime->tv_nsec); | |
677 | inode->i_ctime = *ctime; | |
678 | } | |
ffdeec7a YZ |
679 | if (ci->i_version == 0 || |
680 | ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) > 0) { | |
355da1eb SW |
681 | /* the MDS did a utimes() */ |
682 | dout("mtime %ld.%09ld -> %ld.%09ld " | |
683 | "tw %d -> %d\n", | |
684 | inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, | |
685 | mtime->tv_sec, mtime->tv_nsec, | |
686 | ci->i_time_warp_seq, (int)time_warp_seq); | |
687 | ||
688 | inode->i_mtime = *mtime; | |
689 | inode->i_atime = *atime; | |
690 | ci->i_time_warp_seq = time_warp_seq; | |
691 | } else if (time_warp_seq == ci->i_time_warp_seq) { | |
692 | /* nobody did utimes(); take the max */ | |
693 | if (timespec_compare(mtime, &inode->i_mtime) > 0) { | |
694 | dout("mtime %ld.%09ld -> %ld.%09ld inc\n", | |
695 | inode->i_mtime.tv_sec, | |
696 | inode->i_mtime.tv_nsec, | |
697 | mtime->tv_sec, mtime->tv_nsec); | |
698 | inode->i_mtime = *mtime; | |
699 | } | |
700 | if (timespec_compare(atime, &inode->i_atime) > 0) { | |
701 | dout("atime %ld.%09ld -> %ld.%09ld inc\n", | |
702 | inode->i_atime.tv_sec, | |
703 | inode->i_atime.tv_nsec, | |
704 | atime->tv_sec, atime->tv_nsec); | |
705 | inode->i_atime = *atime; | |
706 | } | |
707 | } else if (issued & CEPH_CAP_FILE_EXCL) { | |
708 | /* we did a utimes(); ignore mds values */ | |
709 | } else { | |
710 | warn = 1; | |
711 | } | |
712 | } else { | |
d8672d64 | 713 | /* we have no write|excl caps; whatever the MDS says is true */ |
355da1eb SW |
714 | if (ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) >= 0) { |
715 | inode->i_ctime = *ctime; | |
716 | inode->i_mtime = *mtime; | |
717 | inode->i_atime = *atime; | |
718 | ci->i_time_warp_seq = time_warp_seq; | |
719 | } else { | |
720 | warn = 1; | |
721 | } | |
722 | } | |
723 | if (warn) /* time_warp_seq shouldn't go backwards */ | |
724 | dout("%p mds time_warp_seq %llu < %u\n", | |
725 | inode, time_warp_seq, ci->i_time_warp_seq); | |
726 | } | |
727 | ||
728 | /* | |
729 | * Populate an inode based on info from mds. May be called on new or | |
730 | * existing inodes. | |
731 | */ | |
01deead0 | 732 | static int fill_inode(struct inode *inode, struct page *locked_page, |
355da1eb SW |
733 | struct ceph_mds_reply_info_in *iinfo, |
734 | struct ceph_mds_reply_dirfrag *dirinfo, | |
735 | struct ceph_mds_session *session, | |
736 | unsigned long ttl_from, int cap_fmode, | |
737 | struct ceph_cap_reservation *caps_reservation) | |
738 | { | |
d9df2783 | 739 | struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc; |
355da1eb SW |
740 | struct ceph_mds_reply_inode *info = iinfo->in; |
741 | struct ceph_inode_info *ci = ceph_inode(inode); | |
f98a128a | 742 | int issued = 0, implemented, new_issued; |
355da1eb | 743 | struct timespec mtime, atime, ctime; |
355da1eb | 744 | struct ceph_buffer *xattr_blob = NULL; |
779fe0fb | 745 | struct ceph_string *pool_ns = NULL; |
d9df2783 | 746 | struct ceph_cap *new_cap = NULL; |
355da1eb | 747 | int err = 0; |
d9df2783 | 748 | bool wake = false; |
f98a128a YZ |
749 | bool queue_trunc = false; |
750 | bool new_version = false; | |
31c542a1 | 751 | bool fill_inline = false; |
355da1eb SW |
752 | |
753 | dout("fill_inode %p ino %llx.%llx v %llu had %llu\n", | |
754 | inode, ceph_vinop(inode), le64_to_cpu(info->version), | |
755 | ci->i_version); | |
756 | ||
d9df2783 YZ |
757 | /* prealloc new cap struct */ |
758 | if (info->cap.caps && ceph_snap(inode) == CEPH_NOSNAP) | |
759 | new_cap = ceph_get_cap(mdsc, caps_reservation); | |
760 | ||
355da1eb SW |
761 | /* |
762 | * prealloc xattr data, if it looks like we'll need it. only | |
763 | * if len > 4 (meaning there are actually xattrs; the first 4 | |
764 | * bytes are the xattr count). | |
765 | */ | |
766 | if (iinfo->xattr_len > 4) { | |
b6c1d5b8 | 767 | xattr_blob = ceph_buffer_new(iinfo->xattr_len, GFP_NOFS); |
355da1eb SW |
768 | if (!xattr_blob) |
769 | pr_err("fill_inode ENOMEM xattr blob %d bytes\n", | |
770 | iinfo->xattr_len); | |
771 | } | |
772 | ||
779fe0fb YZ |
773 | if (iinfo->pool_ns_len > 0) |
774 | pool_ns = ceph_find_or_create_string(iinfo->pool_ns_data, | |
775 | iinfo->pool_ns_len); | |
776 | ||
be655596 | 777 | spin_lock(&ci->i_ceph_lock); |
355da1eb SW |
778 | |
779 | /* | |
780 | * provided version will be odd if inode value is projected, | |
8bd59e01 SW |
781 | * even if stable. skip the update if we have newer stable |
782 | * info (ours>=theirs, e.g. due to racing mds replies), unless | |
783 | * we are getting projected (unstable) info (in which case the | |
784 | * version is odd, and we want ours>theirs). | |
785 | * us them | |
786 | * 2 2 skip | |
787 | * 3 2 skip | |
788 | * 3 3 update | |
355da1eb | 789 | */ |
f98a128a YZ |
790 | if (ci->i_version == 0 || |
791 | ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && | |
792 | le64_to_cpu(info->version) > (ci->i_version & ~1))) | |
793 | new_version = true; | |
794 | ||
355da1eb SW |
795 | issued = __ceph_caps_issued(ci, &implemented); |
796 | issued |= implemented | __ceph_caps_dirty(ci); | |
f98a128a | 797 | new_issued = ~issued & le32_to_cpu(info->cap.caps); |
355da1eb SW |
798 | |
799 | /* update inode */ | |
355da1eb | 800 | inode->i_rdev = le32_to_cpu(info->rdev); |
f98a128a | 801 | inode->i_blkbits = fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1; |
355da1eb | 802 | |
d557c48d | 803 | __ceph_update_quota(ci, iinfo->max_bytes, iinfo->max_files); |
fb18a575 | 804 | |
f98a128a YZ |
805 | if ((new_version || (new_issued & CEPH_CAP_AUTH_SHARED)) && |
806 | (issued & CEPH_CAP_AUTH_EXCL) == 0) { | |
355da1eb | 807 | inode->i_mode = le32_to_cpu(info->mode); |
ab871b90 EB |
808 | inode->i_uid = make_kuid(&init_user_ns, le32_to_cpu(info->uid)); |
809 | inode->i_gid = make_kgid(&init_user_ns, le32_to_cpu(info->gid)); | |
355da1eb | 810 | dout("%p mode 0%o uid.gid %d.%d\n", inode, inode->i_mode, |
bd2bae6a EB |
811 | from_kuid(&init_user_ns, inode->i_uid), |
812 | from_kgid(&init_user_ns, inode->i_gid)); | |
355da1eb SW |
813 | } |
814 | ||
f98a128a YZ |
815 | if ((new_version || (new_issued & CEPH_CAP_LINK_SHARED)) && |
816 | (issued & CEPH_CAP_LINK_EXCL) == 0) | |
bfe86848 | 817 | set_nlink(inode, le32_to_cpu(info->nlink)); |
355da1eb | 818 | |
f98a128a YZ |
819 | if (new_version || (new_issued & CEPH_CAP_ANY_RD)) { |
820 | /* be careful with mtime, atime, size */ | |
821 | ceph_decode_timespec(&atime, &info->atime); | |
822 | ceph_decode_timespec(&mtime, &info->mtime); | |
823 | ceph_decode_timespec(&ctime, &info->ctime); | |
824 | ceph_fill_file_time(inode, issued, | |
825 | le32_to_cpu(info->time_warp_seq), | |
826 | &ctime, &mtime, &atime); | |
827 | } | |
828 | ||
829 | if (new_version || | |
830 | (new_issued & (CEPH_CAP_ANY_FILE_RD | CEPH_CAP_ANY_FILE_WR))) { | |
7627151e | 831 | s64 old_pool = ci->i_layout.pool_id; |
779fe0fb YZ |
832 | struct ceph_string *old_ns; |
833 | ||
7627151e | 834 | ceph_file_layout_from_legacy(&ci->i_layout, &info->layout); |
779fe0fb YZ |
835 | old_ns = rcu_dereference_protected(ci->i_layout.pool_ns, |
836 | lockdep_is_held(&ci->i_ceph_lock)); | |
837 | rcu_assign_pointer(ci->i_layout.pool_ns, pool_ns); | |
838 | ||
839 | if (ci->i_layout.pool_id != old_pool || pool_ns != old_ns) | |
10183a69 | 840 | ci->i_ceph_flags &= ~CEPH_I_POOL_PERM; |
10183a69 | 841 | |
779fe0fb | 842 | pool_ns = old_ns; |
10183a69 | 843 | |
f98a128a YZ |
844 | queue_trunc = ceph_fill_file_size(inode, issued, |
845 | le32_to_cpu(info->truncate_seq), | |
846 | le64_to_cpu(info->truncate_size), | |
847 | le64_to_cpu(info->size)); | |
848 | /* only update max_size on auth cap */ | |
849 | if ((info->cap.flags & CEPH_CAP_FLAG_AUTH) && | |
850 | ci->i_max_size != le64_to_cpu(info->max_size)) { | |
851 | dout("max_size %lld -> %llu\n", ci->i_max_size, | |
852 | le64_to_cpu(info->max_size)); | |
853 | ci->i_max_size = le64_to_cpu(info->max_size); | |
854 | } | |
855 | } | |
355da1eb SW |
856 | |
857 | /* xattrs */ | |
858 | /* note that if i_xattrs.len <= 4, i_xattrs.data will still be NULL. */ | |
508b32d8 | 859 | if ((ci->i_xattrs.version == 0 || !(issued & CEPH_CAP_XATTR_EXCL)) && |
355da1eb SW |
860 | le64_to_cpu(info->xattr_version) > ci->i_xattrs.version) { |
861 | if (ci->i_xattrs.blob) | |
862 | ceph_buffer_put(ci->i_xattrs.blob); | |
863 | ci->i_xattrs.blob = xattr_blob; | |
864 | if (xattr_blob) | |
865 | memcpy(ci->i_xattrs.blob->vec.iov_base, | |
866 | iinfo->xattr_data, iinfo->xattr_len); | |
867 | ci->i_xattrs.version = le64_to_cpu(info->xattr_version); | |
7221fe4c | 868 | ceph_forget_all_cached_acls(inode); |
a6424e48 | 869 | xattr_blob = NULL; |
355da1eb SW |
870 | } |
871 | ||
ffdeec7a YZ |
872 | /* finally update i_version */ |
873 | ci->i_version = le64_to_cpu(info->version); | |
874 | ||
355da1eb | 875 | inode->i_mapping->a_ops = &ceph_aops; |
355da1eb SW |
876 | |
877 | switch (inode->i_mode & S_IFMT) { | |
878 | case S_IFIFO: | |
879 | case S_IFBLK: | |
880 | case S_IFCHR: | |
881 | case S_IFSOCK: | |
882 | init_special_inode(inode, inode->i_mode, inode->i_rdev); | |
883 | inode->i_op = &ceph_file_iops; | |
884 | break; | |
885 | case S_IFREG: | |
886 | inode->i_op = &ceph_file_iops; | |
887 | inode->i_fop = &ceph_file_fops; | |
888 | break; | |
889 | case S_IFLNK: | |
890 | inode->i_op = &ceph_symlink_iops; | |
891 | if (!ci->i_symlink) { | |
810339ec | 892 | u32 symlen = iinfo->symlink_len; |
355da1eb SW |
893 | char *sym; |
894 | ||
be655596 | 895 | spin_unlock(&ci->i_ceph_lock); |
355da1eb | 896 | |
224a7542 YZ |
897 | if (symlen != i_size_read(inode)) { |
898 | pr_err("fill_inode %llx.%llx BAD symlink " | |
899 | "size %lld\n", ceph_vinop(inode), | |
900 | i_size_read(inode)); | |
901 | i_size_write(inode, symlen); | |
902 | inode->i_blocks = calc_inode_blocks(symlen); | |
903 | } | |
810339ec | 904 | |
355da1eb | 905 | err = -ENOMEM; |
810339ec | 906 | sym = kstrndup(iinfo->symlink, symlen, GFP_NOFS); |
355da1eb SW |
907 | if (!sym) |
908 | goto out; | |
355da1eb | 909 | |
be655596 | 910 | spin_lock(&ci->i_ceph_lock); |
355da1eb SW |
911 | if (!ci->i_symlink) |
912 | ci->i_symlink = sym; | |
913 | else | |
914 | kfree(sym); /* lost a race */ | |
915 | } | |
ac194dcc | 916 | inode->i_link = ci->i_symlink; |
355da1eb SW |
917 | break; |
918 | case S_IFDIR: | |
919 | inode->i_op = &ceph_dir_iops; | |
920 | inode->i_fop = &ceph_dir_fops; | |
921 | ||
14303d20 SW |
922 | ci->i_dir_layout = iinfo->dir_layout; |
923 | ||
355da1eb SW |
924 | ci->i_files = le64_to_cpu(info->files); |
925 | ci->i_subdirs = le64_to_cpu(info->subdirs); | |
926 | ci->i_rbytes = le64_to_cpu(info->rbytes); | |
927 | ci->i_rfiles = le64_to_cpu(info->rfiles); | |
928 | ci->i_rsubdirs = le64_to_cpu(info->rsubdirs); | |
929 | ceph_decode_timespec(&ci->i_rctime, &info->rctime); | |
355da1eb SW |
930 | break; |
931 | default: | |
932 | pr_err("fill_inode %llx.%llx BAD mode 0%o\n", | |
933 | ceph_vinop(inode), inode->i_mode); | |
934 | } | |
935 | ||
355da1eb SW |
936 | /* were we issued a capability? */ |
937 | if (info->cap.caps) { | |
938 | if (ceph_snap(inode) == CEPH_NOSNAP) { | |
2f92b3d0 | 939 | unsigned caps = le32_to_cpu(info->cap.caps); |
355da1eb SW |
940 | ceph_add_cap(inode, session, |
941 | le64_to_cpu(info->cap.cap_id), | |
2f92b3d0 | 942 | cap_fmode, caps, |
355da1eb SW |
943 | le32_to_cpu(info->cap.wanted), |
944 | le32_to_cpu(info->cap.seq), | |
945 | le32_to_cpu(info->cap.mseq), | |
946 | le64_to_cpu(info->cap.realm), | |
d9df2783 | 947 | info->cap.flags, &new_cap); |
2f92b3d0 YZ |
948 | |
949 | /* set dir completion flag? */ | |
950 | if (S_ISDIR(inode->i_mode) && | |
951 | ci->i_files == 0 && ci->i_subdirs == 0 && | |
952 | (caps & CEPH_CAP_FILE_SHARED) && | |
953 | (issued & CEPH_CAP_FILE_EXCL) == 0 && | |
954 | !__ceph_dir_is_complete(ci)) { | |
955 | dout(" marking %p complete (empty)\n", inode); | |
fdd4e158 | 956 | i_size_write(inode, 0); |
2f92b3d0 | 957 | __ceph_dir_set_complete(ci, |
fdd4e158 YZ |
958 | atomic64_read(&ci->i_release_count), |
959 | atomic64_read(&ci->i_ordered_count)); | |
2f92b3d0 YZ |
960 | } |
961 | ||
d9df2783 | 962 | wake = true; |
355da1eb | 963 | } else { |
355da1eb SW |
964 | dout(" %p got snap_caps %s\n", inode, |
965 | ceph_cap_string(le32_to_cpu(info->cap.caps))); | |
966 | ci->i_snap_caps |= le32_to_cpu(info->cap.caps); | |
967 | if (cap_fmode >= 0) | |
968 | __ceph_get_fmode(ci, cap_fmode); | |
355da1eb | 969 | } |
04d000eb | 970 | } else if (cap_fmode >= 0) { |
f3ae1b97 | 971 | pr_warn("mds issued no caps on %llx.%llx\n", |
04d000eb SW |
972 | ceph_vinop(inode)); |
973 | __ceph_get_fmode(ci, cap_fmode); | |
355da1eb | 974 | } |
31c542a1 YZ |
975 | |
976 | if (iinfo->inline_version > 0 && | |
977 | iinfo->inline_version >= ci->i_inline_version) { | |
978 | int cache_caps = CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_LAZYIO; | |
979 | ci->i_inline_version = iinfo->inline_version; | |
980 | if (ci->i_inline_version != CEPH_INLINE_NONE && | |
01deead0 YZ |
981 | (locked_page || |
982 | (le32_to_cpu(info->cap.caps) & cache_caps))) | |
31c542a1 YZ |
983 | fill_inline = true; |
984 | } | |
985 | ||
be655596 | 986 | spin_unlock(&ci->i_ceph_lock); |
355da1eb | 987 | |
31c542a1 | 988 | if (fill_inline) |
01deead0 | 989 | ceph_fill_inline_data(inode, locked_page, |
31c542a1 YZ |
990 | iinfo->inline_data, iinfo->inline_len); |
991 | ||
d9df2783 YZ |
992 | if (wake) |
993 | wake_up_all(&ci->i_cap_wq); | |
994 | ||
355da1eb SW |
995 | /* queue truncate if we saw i_size decrease */ |
996 | if (queue_trunc) | |
3c6f6b79 | 997 | ceph_queue_vmtruncate(inode); |
355da1eb SW |
998 | |
999 | /* populate frag tree */ | |
3e7fbe9c YZ |
1000 | if (S_ISDIR(inode->i_mode)) |
1001 | ceph_fill_fragtree(inode, &info->fragtree, dirinfo); | |
355da1eb SW |
1002 | |
1003 | /* update delegation info? */ | |
1004 | if (dirinfo) | |
1005 | ceph_fill_dirfrag(inode, dirinfo); | |
1006 | ||
1007 | err = 0; | |
355da1eb | 1008 | out: |
d9df2783 YZ |
1009 | if (new_cap) |
1010 | ceph_put_cap(mdsc, new_cap); | |
b6c1d5b8 SW |
1011 | if (xattr_blob) |
1012 | ceph_buffer_put(xattr_blob); | |
779fe0fb | 1013 | ceph_put_string(pool_ns); |
355da1eb SW |
1014 | return err; |
1015 | } | |
1016 | ||
1017 | /* | |
1018 | * caller should hold session s_mutex. | |
1019 | */ | |
1020 | static void update_dentry_lease(struct dentry *dentry, | |
1021 | struct ceph_mds_reply_lease *lease, | |
1022 | struct ceph_mds_session *session, | |
f5d55f03 JL |
1023 | unsigned long from_time, |
1024 | struct ceph_vino *tgt_vino, | |
1025 | struct ceph_vino *dir_vino) | |
355da1eb SW |
1026 | { |
1027 | struct ceph_dentry_info *di = ceph_dentry(dentry); | |
1028 | long unsigned duration = le32_to_cpu(lease->duration_ms); | |
1029 | long unsigned ttl = from_time + (duration * HZ) / 1000; | |
1030 | long unsigned half_ttl = from_time + (duration * HZ / 2) / 1000; | |
1031 | struct inode *dir; | |
481f001f | 1032 | struct ceph_mds_session *old_lease_session = NULL; |
355da1eb | 1033 | |
f5d55f03 JL |
1034 | /* |
1035 | * Make sure dentry's inode matches tgt_vino. NULL tgt_vino means that | |
1036 | * we expect a negative dentry. | |
1037 | */ | |
1038 | if (!tgt_vino && d_really_is_positive(dentry)) | |
1039 | return; | |
1040 | ||
1041 | if (tgt_vino && (d_really_is_negative(dentry) || | |
1042 | !ceph_ino_compare(d_inode(dentry), tgt_vino))) | |
1043 | return; | |
1044 | ||
355da1eb | 1045 | spin_lock(&dentry->d_lock); |
2f90b852 SW |
1046 | dout("update_dentry_lease %p duration %lu ms ttl %lu\n", |
1047 | dentry, duration, ttl); | |
355da1eb | 1048 | |
2b0143b5 | 1049 | dir = d_inode(dentry->d_parent); |
18fc8abd | 1050 | |
f5d55f03 JL |
1051 | /* make sure parent matches dir_vino */ |
1052 | if (!ceph_ino_compare(dir, dir_vino)) | |
1053 | goto out_unlock; | |
1054 | ||
18fc8abd AV |
1055 | /* only track leases on regular dentries */ |
1056 | if (ceph_snap(dir) != CEPH_NOSNAP) | |
1057 | goto out_unlock; | |
1058 | ||
97aeb6bf | 1059 | di->lease_shared_gen = atomic_read(&ceph_inode(dir)->i_shared_gen); |
355da1eb | 1060 | |
2f90b852 | 1061 | if (duration == 0) |
355da1eb SW |
1062 | goto out_unlock; |
1063 | ||
1064 | if (di->lease_gen == session->s_cap_gen && | |
9b16f03c | 1065 | time_before(ttl, di->time)) |
355da1eb SW |
1066 | goto out_unlock; /* we already have a newer lease. */ |
1067 | ||
481f001f YZ |
1068 | if (di->lease_session && di->lease_session != session) { |
1069 | old_lease_session = di->lease_session; | |
1070 | di->lease_session = NULL; | |
1071 | } | |
355da1eb SW |
1072 | |
1073 | ceph_dentry_lru_touch(dentry); | |
1074 | ||
1075 | if (!di->lease_session) | |
1076 | di->lease_session = ceph_get_mds_session(session); | |
1077 | di->lease_gen = session->s_cap_gen; | |
1078 | di->lease_seq = le32_to_cpu(lease->seq); | |
1079 | di->lease_renew_after = half_ttl; | |
1080 | di->lease_renew_from = 0; | |
9b16f03c | 1081 | di->time = ttl; |
355da1eb SW |
1082 | out_unlock: |
1083 | spin_unlock(&dentry->d_lock); | |
481f001f YZ |
1084 | if (old_lease_session) |
1085 | ceph_put_mds_session(old_lease_session); | |
355da1eb SW |
1086 | } |
1087 | ||
1088 | /* | |
1089 | * splice a dentry to an inode. | |
1090 | * caller must hold directory i_mutex for this to be safe. | |
355da1eb | 1091 | */ |
f7380af0 | 1092 | static struct dentry *splice_dentry(struct dentry *dn, struct inode *in) |
355da1eb SW |
1093 | { |
1094 | struct dentry *realdn; | |
1095 | ||
2b0143b5 | 1096 | BUG_ON(d_inode(dn)); |
1cd3935b | 1097 | |
5495c2d0 YZ |
1098 | if (S_ISDIR(in->i_mode)) { |
1099 | /* If inode is directory, d_splice_alias() below will remove | |
1100 | * 'realdn' from its origin parent. We need to ensure that | |
1101 | * origin parent's readdir cache will not reference 'realdn' | |
1102 | */ | |
1103 | realdn = d_find_any_alias(in); | |
1104 | if (realdn) { | |
1105 | struct ceph_dentry_info *di = ceph_dentry(realdn); | |
1106 | spin_lock(&realdn->d_lock); | |
1107 | ||
1108 | realdn->d_op->d_prune(realdn); | |
1109 | ||
1110 | di->time = jiffies; | |
1111 | di->lease_shared_gen = 0; | |
1112 | di->offset = 0; | |
1113 | ||
1114 | spin_unlock(&realdn->d_lock); | |
1115 | dput(realdn); | |
1116 | } | |
1117 | } | |
1118 | ||
355da1eb SW |
1119 | /* dn must be unhashed */ |
1120 | if (!d_unhashed(dn)) | |
1121 | d_drop(dn); | |
41d28bca | 1122 | realdn = d_splice_alias(in, dn); |
355da1eb | 1123 | if (IS_ERR(realdn)) { |
d69ed05a SW |
1124 | pr_err("splice_dentry error %ld %p inode %p ino %llx.%llx\n", |
1125 | PTR_ERR(realdn), dn, in, ceph_vinop(in)); | |
355da1eb SW |
1126 | dn = realdn; /* note realdn contains the error */ |
1127 | goto out; | |
1128 | } else if (realdn) { | |
1129 | dout("dn %p (%d) spliced with %p (%d) " | |
1130 | "inode %p ino %llx.%llx\n", | |
84d08fa8 AV |
1131 | dn, d_count(dn), |
1132 | realdn, d_count(realdn), | |
2b0143b5 | 1133 | d_inode(realdn), ceph_vinop(d_inode(realdn))); |
355da1eb SW |
1134 | dput(dn); |
1135 | dn = realdn; | |
1136 | } else { | |
1137 | BUG_ON(!ceph_dentry(dn)); | |
355da1eb | 1138 | dout("dn %p attached to %p ino %llx.%llx\n", |
2b0143b5 | 1139 | dn, d_inode(dn), ceph_vinop(d_inode(dn))); |
355da1eb | 1140 | } |
355da1eb SW |
1141 | out: |
1142 | return dn; | |
1143 | } | |
1144 | ||
1145 | /* | |
1146 | * Incorporate results into the local cache. This is either just | |
1147 | * one inode, or a directory, dentry, and possibly linked-to inode (e.g., | |
1148 | * after a lookup). | |
1149 | * | |
1150 | * A reply may contain | |
1151 | * a directory inode along with a dentry. | |
1152 | * and/or a target inode | |
1153 | * | |
1154 | * Called with snap_rwsem (read). | |
1155 | */ | |
f5a03b08 | 1156 | int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req) |
355da1eb | 1157 | { |
f5a03b08 | 1158 | struct ceph_mds_session *session = req->r_session; |
355da1eb SW |
1159 | struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; |
1160 | struct inode *in = NULL; | |
f5d55f03 | 1161 | struct ceph_vino tvino, dvino; |
3d14c5d2 | 1162 | struct ceph_fs_client *fsc = ceph_sb_to_client(sb); |
355da1eb SW |
1163 | int err = 0; |
1164 | ||
1165 | dout("fill_trace %p is_dentry %d is_target %d\n", req, | |
1166 | rinfo->head->is_dentry, rinfo->head->is_target); | |
1167 | ||
355da1eb SW |
1168 | if (!rinfo->head->is_target && !rinfo->head->is_dentry) { |
1169 | dout("fill_trace reply is empty!\n"); | |
3dd69aab | 1170 | if (rinfo->head->result == 0 && req->r_parent) |
167c9e35 | 1171 | ceph_invalidate_dir_request(req); |
355da1eb SW |
1172 | return 0; |
1173 | } | |
1174 | ||
1175 | if (rinfo->head->is_dentry) { | |
3dd69aab | 1176 | struct inode *dir = req->r_parent; |
5b1daecd | 1177 | |
6c5e50fa | 1178 | if (dir) { |
01deead0 YZ |
1179 | err = fill_inode(dir, NULL, |
1180 | &rinfo->diri, rinfo->dirfrag, | |
6c5e50fa SW |
1181 | session, req->r_request_started, -1, |
1182 | &req->r_caps_reservation); | |
1183 | if (err < 0) | |
19913b4e | 1184 | goto done; |
6c5e50fa SW |
1185 | } else { |
1186 | WARN_ON_ONCE(1); | |
1187 | } | |
19913b4e YZ |
1188 | |
1189 | if (dir && req->r_op == CEPH_MDS_OP_LOOKUPNAME) { | |
1190 | struct qstr dname; | |
1191 | struct dentry *dn, *parent; | |
1192 | ||
1193 | BUG_ON(!rinfo->head->is_target); | |
1194 | BUG_ON(req->r_dentry); | |
1195 | ||
1196 | parent = d_find_any_alias(dir); | |
1197 | BUG_ON(!parent); | |
1198 | ||
1199 | dname.name = rinfo->dname; | |
1200 | dname.len = rinfo->dname_len; | |
8387ff25 | 1201 | dname.hash = full_name_hash(parent, dname.name, dname.len); |
f5d55f03 JL |
1202 | tvino.ino = le64_to_cpu(rinfo->targeti.in->ino); |
1203 | tvino.snap = le64_to_cpu(rinfo->targeti.in->snapid); | |
19913b4e YZ |
1204 | retry_lookup: |
1205 | dn = d_lookup(parent, &dname); | |
1206 | dout("d_lookup on parent=%p name=%.*s got %p\n", | |
1207 | parent, dname.len, dname.name, dn); | |
1208 | ||
1209 | if (!dn) { | |
1210 | dn = d_alloc(parent, &dname); | |
1211 | dout("d_alloc %p '%.*s' = %p\n", parent, | |
1212 | dname.len, dname.name, dn); | |
d37b1d99 | 1213 | if (!dn) { |
19913b4e YZ |
1214 | dput(parent); |
1215 | err = -ENOMEM; | |
1216 | goto done; | |
1217 | } | |
ad5cb123 | 1218 | err = 0; |
2b0143b5 | 1219 | } else if (d_really_is_positive(dn) && |
f5d55f03 JL |
1220 | (ceph_ino(d_inode(dn)) != tvino.ino || |
1221 | ceph_snap(d_inode(dn)) != tvino.snap)) { | |
19913b4e | 1222 | dout(" dn %p points to wrong inode %p\n", |
2b0143b5 | 1223 | dn, d_inode(dn)); |
933ad2c9 | 1224 | ceph_dir_clear_ordered(dir); |
19913b4e YZ |
1225 | d_delete(dn); |
1226 | dput(dn); | |
1227 | goto retry_lookup; | |
1228 | } | |
1229 | ||
1230 | req->r_dentry = dn; | |
1231 | dput(parent); | |
1232 | } | |
5b1daecd SW |
1233 | } |
1234 | ||
86b58d13 | 1235 | if (rinfo->head->is_target) { |
f5d55f03 JL |
1236 | tvino.ino = le64_to_cpu(rinfo->targeti.in->ino); |
1237 | tvino.snap = le64_to_cpu(rinfo->targeti.in->snapid); | |
86b58d13 | 1238 | |
f5d55f03 | 1239 | in = ceph_get_inode(sb, tvino); |
86b58d13 YZ |
1240 | if (IS_ERR(in)) { |
1241 | err = PTR_ERR(in); | |
1242 | goto done; | |
1243 | } | |
1244 | req->r_target_inode = in; | |
1245 | ||
01deead0 | 1246 | err = fill_inode(in, req->r_locked_page, &rinfo->targeti, NULL, |
86b58d13 | 1247 | session, req->r_request_started, |
bc2de10d JL |
1248 | (!test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags) && |
1249 | rinfo->head->result == 0) ? req->r_fmode : -1, | |
86b58d13 YZ |
1250 | &req->r_caps_reservation); |
1251 | if (err < 0) { | |
1252 | pr_err("fill_inode badness %p %llx.%llx\n", | |
1253 | in, ceph_vinop(in)); | |
1254 | goto done; | |
1255 | } | |
1256 | } | |
1257 | ||
9358c6d4 SW |
1258 | /* |
1259 | * ignore null lease/binding on snapdir ENOENT, or else we | |
1260 | * will have trouble splicing in the virtual snapdir later | |
1261 | */ | |
3dd69aab JL |
1262 | if (rinfo->head->is_dentry && |
1263 | !test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags) && | |
1264 | test_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags) && | |
9358c6d4 | 1265 | (rinfo->head->is_target || strncmp(req->r_dentry->d_name.name, |
3d14c5d2 | 1266 | fsc->mount_options->snapdir_name, |
9358c6d4 | 1267 | req->r_dentry->d_name.len))) { |
355da1eb SW |
1268 | /* |
1269 | * lookup link rename : null -> possibly existing inode | |
1270 | * mknod symlink mkdir : null -> new inode | |
1271 | * unlink : linked -> null | |
1272 | */ | |
3dd69aab | 1273 | struct inode *dir = req->r_parent; |
355da1eb SW |
1274 | struct dentry *dn = req->r_dentry; |
1275 | bool have_dir_cap, have_lease; | |
1276 | ||
1277 | BUG_ON(!dn); | |
1278 | BUG_ON(!dir); | |
2b0143b5 | 1279 | BUG_ON(d_inode(dn->d_parent) != dir); |
f5d55f03 JL |
1280 | |
1281 | dvino.ino = le64_to_cpu(rinfo->diri.in->ino); | |
1282 | dvino.snap = le64_to_cpu(rinfo->diri.in->snapid); | |
1283 | ||
1284 | BUG_ON(ceph_ino(dir) != dvino.ino); | |
1285 | BUG_ON(ceph_snap(dir) != dvino.snap); | |
355da1eb | 1286 | |
355da1eb SW |
1287 | /* do we have a lease on the whole dir? */ |
1288 | have_dir_cap = | |
1289 | (le32_to_cpu(rinfo->diri.in->cap.caps) & | |
1290 | CEPH_CAP_FILE_SHARED); | |
1291 | ||
1292 | /* do we have a dn lease? */ | |
1293 | have_lease = have_dir_cap || | |
2f90b852 | 1294 | le32_to_cpu(rinfo->dlease->duration_ms); |
355da1eb SW |
1295 | if (!have_lease) |
1296 | dout("fill_trace no dentry lease or dir cap\n"); | |
1297 | ||
1298 | /* rename? */ | |
1299 | if (req->r_old_dentry && req->r_op == CEPH_MDS_OP_RENAME) { | |
0a8a70f9 YZ |
1300 | struct inode *olddir = req->r_old_dentry_dir; |
1301 | BUG_ON(!olddir); | |
1302 | ||
a455589f | 1303 | dout(" src %p '%pd' dst %p '%pd'\n", |
355da1eb | 1304 | req->r_old_dentry, |
a455589f AV |
1305 | req->r_old_dentry, |
1306 | dn, dn); | |
355da1eb SW |
1307 | dout("fill_trace doing d_move %p -> %p\n", |
1308 | req->r_old_dentry, dn); | |
c10f5e12 | 1309 | |
fdd4e158 YZ |
1310 | /* d_move screws up sibling dentries' offsets */ |
1311 | ceph_dir_clear_ordered(dir); | |
1312 | ceph_dir_clear_ordered(olddir); | |
1313 | ||
355da1eb | 1314 | d_move(req->r_old_dentry, dn); |
a455589f AV |
1315 | dout(" src %p '%pd' dst %p '%pd'\n", |
1316 | req->r_old_dentry, | |
355da1eb | 1317 | req->r_old_dentry, |
a455589f | 1318 | dn, dn); |
81a6cf2d | 1319 | |
c4a29f26 SW |
1320 | /* ensure target dentry is invalidated, despite |
1321 | rehashing bug in vfs_rename_dir */ | |
81a6cf2d SW |
1322 | ceph_invalidate_dentry_lease(dn); |
1323 | ||
99ccbd22 | 1324 | dout("dn %p gets new offset %lld\n", req->r_old_dentry, |
1cd3935b | 1325 | ceph_dentry(req->r_old_dentry)->offset); |
81a6cf2d | 1326 | |
355da1eb | 1327 | dn = req->r_old_dentry; /* use old_dentry */ |
355da1eb SW |
1328 | } |
1329 | ||
1330 | /* null dentry? */ | |
1331 | if (!rinfo->head->is_target) { | |
1332 | dout("fill_trace null dentry\n"); | |
2b0143b5 | 1333 | if (d_really_is_positive(dn)) { |
355da1eb | 1334 | dout("d_delete %p\n", dn); |
5495c2d0 | 1335 | ceph_dir_clear_ordered(dir); |
355da1eb | 1336 | d_delete(dn); |
80d025ff JL |
1337 | } else if (have_lease) { |
1338 | if (d_unhashed(dn)) | |
f8b31710 | 1339 | d_add(dn, NULL); |
355da1eb SW |
1340 | update_dentry_lease(dn, rinfo->dlease, |
1341 | session, | |
f5d55f03 JL |
1342 | req->r_request_started, |
1343 | NULL, &dvino); | |
355da1eb SW |
1344 | } |
1345 | goto done; | |
1346 | } | |
1347 | ||
1348 | /* attach proper inode */ | |
2b0143b5 | 1349 | if (d_really_is_negative(dn)) { |
70db4f36 | 1350 | ceph_dir_clear_ordered(dir); |
86b58d13 | 1351 | ihold(in); |
f7380af0 | 1352 | dn = splice_dentry(dn, in); |
355da1eb SW |
1353 | if (IS_ERR(dn)) { |
1354 | err = PTR_ERR(dn); | |
1355 | goto done; | |
1356 | } | |
1357 | req->r_dentry = dn; /* may have spliced */ | |
2b0143b5 | 1358 | } else if (d_really_is_positive(dn) && d_inode(dn) != in) { |
355da1eb | 1359 | dout(" %p links to %p %llx.%llx, not %llx.%llx\n", |
2b0143b5 | 1360 | dn, d_inode(dn), ceph_vinop(d_inode(dn)), |
86b58d13 | 1361 | ceph_vinop(in)); |
200fd27c | 1362 | d_invalidate(dn); |
355da1eb | 1363 | have_lease = false; |
355da1eb SW |
1364 | } |
1365 | ||
f5d55f03 JL |
1366 | if (have_lease) { |
1367 | tvino.ino = le64_to_cpu(rinfo->targeti.in->ino); | |
1368 | tvino.snap = le64_to_cpu(rinfo->targeti.in->snapid); | |
355da1eb | 1369 | update_dentry_lease(dn, rinfo->dlease, session, |
f5d55f03 JL |
1370 | req->r_request_started, |
1371 | &tvino, &dvino); | |
1372 | } | |
355da1eb | 1373 | dout(" final dn %p\n", dn); |
bc2de10d JL |
1374 | } else if ((req->r_op == CEPH_MDS_OP_LOOKUPSNAP || |
1375 | req->r_op == CEPH_MDS_OP_MKSNAP) && | |
1376 | !test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) { | |
355da1eb | 1377 | struct dentry *dn = req->r_dentry; |
3dd69aab | 1378 | struct inode *dir = req->r_parent; |
355da1eb SW |
1379 | |
1380 | /* fill out a snapdir LOOKUPSNAP dentry */ | |
1381 | BUG_ON(!dn); | |
0a8a70f9 YZ |
1382 | BUG_ON(!dir); |
1383 | BUG_ON(ceph_snap(dir) != CEPH_SNAPDIR); | |
355da1eb | 1384 | dout(" linking snapped dir %p to dn %p\n", in, dn); |
70db4f36 | 1385 | ceph_dir_clear_ordered(dir); |
86b58d13 | 1386 | ihold(in); |
f7380af0 | 1387 | dn = splice_dentry(dn, in); |
355da1eb SW |
1388 | if (IS_ERR(dn)) { |
1389 | err = PTR_ERR(dn); | |
1390 | goto done; | |
1391 | } | |
1392 | req->r_dentry = dn; /* may have spliced */ | |
cdde7c43 JL |
1393 | } else if (rinfo->head->is_dentry) { |
1394 | struct ceph_vino *ptvino = NULL; | |
1395 | ||
1396 | if ((le32_to_cpu(rinfo->diri.in->cap.caps) & CEPH_CAP_FILE_SHARED) || | |
1397 | le32_to_cpu(rinfo->dlease->duration_ms)) { | |
1398 | dvino.ino = le64_to_cpu(rinfo->diri.in->ino); | |
1399 | dvino.snap = le64_to_cpu(rinfo->diri.in->snapid); | |
1400 | ||
1401 | if (rinfo->head->is_target) { | |
1402 | tvino.ino = le64_to_cpu(rinfo->targeti.in->ino); | |
1403 | tvino.snap = le64_to_cpu(rinfo->targeti.in->snapid); | |
1404 | ptvino = &tvino; | |
1405 | } | |
1406 | ||
1407 | update_dentry_lease(req->r_dentry, rinfo->dlease, | |
1408 | session, req->r_request_started, ptvino, | |
1409 | &dvino); | |
1410 | } else { | |
1411 | dout("%s: no dentry lease or dir cap\n", __func__); | |
1412 | } | |
355da1eb | 1413 | } |
355da1eb SW |
1414 | done: |
1415 | dout("fill_trace done err=%d\n", err); | |
1416 | return err; | |
1417 | } | |
1418 | ||
1419 | /* | |
1420 | * Prepopulate our cache with readdir results, leases, etc. | |
1421 | */ | |
79f9f99a SW |
1422 | static int readdir_prepopulate_inodes_only(struct ceph_mds_request *req, |
1423 | struct ceph_mds_session *session) | |
1424 | { | |
1425 | struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; | |
1426 | int i, err = 0; | |
1427 | ||
1428 | for (i = 0; i < rinfo->dir_nr; i++) { | |
2a5beea3 | 1429 | struct ceph_mds_reply_dir_entry *rde = rinfo->dir_entries + i; |
79f9f99a SW |
1430 | struct ceph_vino vino; |
1431 | struct inode *in; | |
1432 | int rc; | |
1433 | ||
2a5beea3 YZ |
1434 | vino.ino = le64_to_cpu(rde->inode.in->ino); |
1435 | vino.snap = le64_to_cpu(rde->inode.in->snapid); | |
79f9f99a SW |
1436 | |
1437 | in = ceph_get_inode(req->r_dentry->d_sb, vino); | |
1438 | if (IS_ERR(in)) { | |
1439 | err = PTR_ERR(in); | |
1440 | dout("new_inode badness got %d\n", err); | |
1441 | continue; | |
1442 | } | |
2a5beea3 | 1443 | rc = fill_inode(in, NULL, &rde->inode, NULL, session, |
79f9f99a SW |
1444 | req->r_request_started, -1, |
1445 | &req->r_caps_reservation); | |
1446 | if (rc < 0) { | |
1447 | pr_err("fill_inode badness on %p got %d\n", in, rc); | |
1448 | err = rc; | |
79f9f99a | 1449 | } |
209ae762 | 1450 | iput(in); |
79f9f99a SW |
1451 | } |
1452 | ||
1453 | return err; | |
1454 | } | |
1455 | ||
fdd4e158 YZ |
1456 | void ceph_readdir_cache_release(struct ceph_readdir_cache_control *ctl) |
1457 | { | |
1458 | if (ctl->page) { | |
1459 | kunmap(ctl->page); | |
09cbfeaf | 1460 | put_page(ctl->page); |
fdd4e158 YZ |
1461 | ctl->page = NULL; |
1462 | } | |
1463 | } | |
1464 | ||
1465 | static int fill_readdir_cache(struct inode *dir, struct dentry *dn, | |
1466 | struct ceph_readdir_cache_control *ctl, | |
1467 | struct ceph_mds_request *req) | |
1468 | { | |
1469 | struct ceph_inode_info *ci = ceph_inode(dir); | |
09cbfeaf | 1470 | unsigned nsize = PAGE_SIZE / sizeof(struct dentry*); |
fdd4e158 YZ |
1471 | unsigned idx = ctl->index % nsize; |
1472 | pgoff_t pgoff = ctl->index / nsize; | |
1473 | ||
1474 | if (!ctl->page || pgoff != page_index(ctl->page)) { | |
1475 | ceph_readdir_cache_release(ctl); | |
af5e5eb5 YZ |
1476 | if (idx == 0) |
1477 | ctl->page = grab_cache_page(&dir->i_data, pgoff); | |
1478 | else | |
1479 | ctl->page = find_lock_page(&dir->i_data, pgoff); | |
fdd4e158 YZ |
1480 | if (!ctl->page) { |
1481 | ctl->index = -1; | |
af5e5eb5 | 1482 | return idx == 0 ? -ENOMEM : 0; |
fdd4e158 YZ |
1483 | } |
1484 | /* reading/filling the cache are serialized by | |
1485 | * i_mutex, no need to use page lock */ | |
1486 | unlock_page(ctl->page); | |
1487 | ctl->dentries = kmap(ctl->page); | |
af5e5eb5 | 1488 | if (idx == 0) |
09cbfeaf | 1489 | memset(ctl->dentries, 0, PAGE_SIZE); |
fdd4e158 YZ |
1490 | } |
1491 | ||
1492 | if (req->r_dir_release_cnt == atomic64_read(&ci->i_release_count) && | |
1493 | req->r_dir_ordered_cnt == atomic64_read(&ci->i_ordered_count)) { | |
1494 | dout("readdir cache dn %p idx %d\n", dn, ctl->index); | |
1495 | ctl->dentries[idx] = dn; | |
1496 | ctl->index++; | |
1497 | } else { | |
1498 | dout("disable readdir cache\n"); | |
1499 | ctl->index = -1; | |
1500 | } | |
1501 | return 0; | |
1502 | } | |
1503 | ||
355da1eb SW |
1504 | int ceph_readdir_prepopulate(struct ceph_mds_request *req, |
1505 | struct ceph_mds_session *session) | |
1506 | { | |
1507 | struct dentry *parent = req->r_dentry; | |
f3c4ebe6 | 1508 | struct ceph_inode_info *ci = ceph_inode(d_inode(parent)); |
355da1eb SW |
1509 | struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info; |
1510 | struct qstr dname; | |
1511 | struct dentry *dn; | |
1512 | struct inode *in; | |
315f2408 | 1513 | int err = 0, skipped = 0, ret, i; |
355da1eb | 1514 | struct ceph_mds_request_head *rhead = req->r_request->front.iov_base; |
81c6aea5 | 1515 | u32 frag = le32_to_cpu(rhead->args.readdir.frag); |
f3c4ebe6 YZ |
1516 | u32 last_hash = 0; |
1517 | u32 fpos_offset; | |
fdd4e158 YZ |
1518 | struct ceph_readdir_cache_control cache_ctl = {}; |
1519 | ||
bc2de10d | 1520 | if (test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) |
fdd4e158 | 1521 | return readdir_prepopulate_inodes_only(req, session); |
81c6aea5 | 1522 | |
79162547 YZ |
1523 | if (rinfo->hash_order) { |
1524 | if (req->r_path2) { | |
1525 | last_hash = ceph_str_hash(ci->i_dir_layout.dl_dir_hash, | |
1526 | req->r_path2, | |
1527 | strlen(req->r_path2)); | |
1528 | last_hash = ceph_frag_value(last_hash); | |
1529 | } else if (rinfo->offset_hash) { | |
1530 | /* mds understands offset_hash */ | |
1531 | WARN_ON_ONCE(req->r_readdir_offset != 2); | |
1532 | last_hash = le32_to_cpu(rhead->args.readdir.offset_hash); | |
1533 | } | |
f3c4ebe6 YZ |
1534 | } |
1535 | ||
81c6aea5 YZ |
1536 | if (rinfo->dir_dir && |
1537 | le32_to_cpu(rinfo->dir_dir->frag) != frag) { | |
1538 | dout("readdir_prepopulate got new frag %x -> %x\n", | |
1539 | frag, le32_to_cpu(rinfo->dir_dir->frag)); | |
1540 | frag = le32_to_cpu(rinfo->dir_dir->frag); | |
f3c4ebe6 | 1541 | if (!rinfo->hash_order) |
fdd4e158 | 1542 | req->r_readdir_offset = 2; |
81c6aea5 | 1543 | } |
355da1eb SW |
1544 | |
1545 | if (le32_to_cpu(rinfo->head->op) == CEPH_MDS_OP_LSSNAP) { | |
355da1eb SW |
1546 | dout("readdir_prepopulate %d items under SNAPDIR dn %p\n", |
1547 | rinfo->dir_nr, parent); | |
1548 | } else { | |
1549 | dout("readdir_prepopulate %d items under dn %p\n", | |
1550 | rinfo->dir_nr, parent); | |
1551 | if (rinfo->dir_dir) | |
2b0143b5 | 1552 | ceph_fill_dirfrag(d_inode(parent), rinfo->dir_dir); |
355da1eb | 1553 | |
8d45b911 YZ |
1554 | if (ceph_frag_is_leftmost(frag) && |
1555 | req->r_readdir_offset == 2 && | |
1556 | !(rinfo->hash_order && last_hash)) { | |
1557 | /* note dir version at start of readdir so we can | |
1558 | * tell if any dentries get dropped */ | |
1559 | req->r_dir_release_cnt = | |
1560 | atomic64_read(&ci->i_release_count); | |
1561 | req->r_dir_ordered_cnt = | |
1562 | atomic64_read(&ci->i_ordered_count); | |
1563 | req->r_readdir_cache_idx = 0; | |
1564 | } | |
fdd4e158 YZ |
1565 | } |
1566 | ||
1567 | cache_ctl.index = req->r_readdir_cache_idx; | |
f3c4ebe6 | 1568 | fpos_offset = req->r_readdir_offset; |
fdd4e158 | 1569 | |
86b58d13 | 1570 | /* FIXME: release caps/leases if error occurs */ |
355da1eb | 1571 | for (i = 0; i < rinfo->dir_nr; i++) { |
2a5beea3 | 1572 | struct ceph_mds_reply_dir_entry *rde = rinfo->dir_entries + i; |
f5d55f03 | 1573 | struct ceph_vino tvino, dvino; |
355da1eb | 1574 | |
2a5beea3 YZ |
1575 | dname.name = rde->name; |
1576 | dname.len = rde->name_len; | |
8387ff25 | 1577 | dname.hash = full_name_hash(parent, dname.name, dname.len); |
355da1eb | 1578 | |
f5d55f03 JL |
1579 | tvino.ino = le64_to_cpu(rde->inode.in->ino); |
1580 | tvino.snap = le64_to_cpu(rde->inode.in->snapid); | |
355da1eb | 1581 | |
f3c4ebe6 YZ |
1582 | if (rinfo->hash_order) { |
1583 | u32 hash = ceph_str_hash(ci->i_dir_layout.dl_dir_hash, | |
1584 | rde->name, rde->name_len); | |
1585 | hash = ceph_frag_value(hash); | |
1586 | if (hash != last_hash) | |
1587 | fpos_offset = 2; | |
1588 | last_hash = hash; | |
1589 | rde->offset = ceph_make_fpos(hash, fpos_offset++, true); | |
1590 | } else { | |
1591 | rde->offset = ceph_make_fpos(frag, fpos_offset++, false); | |
1592 | } | |
355da1eb SW |
1593 | |
1594 | retry_lookup: | |
1595 | dn = d_lookup(parent, &dname); | |
1596 | dout("d_lookup on parent=%p name=%.*s got %p\n", | |
1597 | parent, dname.len, dname.name, dn); | |
1598 | ||
1599 | if (!dn) { | |
1600 | dn = d_alloc(parent, &dname); | |
1601 | dout("d_alloc %p '%.*s' = %p\n", parent, | |
1602 | dname.len, dname.name, dn); | |
d37b1d99 | 1603 | if (!dn) { |
355da1eb SW |
1604 | dout("d_alloc badness\n"); |
1605 | err = -ENOMEM; | |
1606 | goto out; | |
1607 | } | |
2b0143b5 | 1608 | } else if (d_really_is_positive(dn) && |
f5d55f03 JL |
1609 | (ceph_ino(d_inode(dn)) != tvino.ino || |
1610 | ceph_snap(d_inode(dn)) != tvino.snap)) { | |
5495c2d0 | 1611 | struct ceph_dentry_info *di = ceph_dentry(dn); |
355da1eb | 1612 | dout(" dn %p points to wrong inode %p\n", |
2b0143b5 | 1613 | dn, d_inode(dn)); |
5495c2d0 YZ |
1614 | |
1615 | spin_lock(&dn->d_lock); | |
1616 | if (di->offset > 0 && | |
1617 | di->lease_shared_gen == | |
1618 | atomic_read(&ci->i_shared_gen)) { | |
1619 | __ceph_dir_clear_ordered(ci); | |
1620 | di->offset = 0; | |
1621 | } | |
1622 | spin_unlock(&dn->d_lock); | |
1623 | ||
355da1eb SW |
1624 | d_delete(dn); |
1625 | dput(dn); | |
1626 | goto retry_lookup; | |
355da1eb SW |
1627 | } |
1628 | ||
355da1eb | 1629 | /* inode */ |
2b0143b5 DH |
1630 | if (d_really_is_positive(dn)) { |
1631 | in = d_inode(dn); | |
355da1eb | 1632 | } else { |
f5d55f03 | 1633 | in = ceph_get_inode(parent->d_sb, tvino); |
ac1f12ef | 1634 | if (IS_ERR(in)) { |
355da1eb | 1635 | dout("new_inode badness\n"); |
2744c171 | 1636 | d_drop(dn); |
355da1eb | 1637 | dput(dn); |
ac1f12ef | 1638 | err = PTR_ERR(in); |
355da1eb SW |
1639 | goto out; |
1640 | } | |
355da1eb SW |
1641 | } |
1642 | ||
2a5beea3 | 1643 | ret = fill_inode(in, NULL, &rde->inode, NULL, session, |
fdd4e158 YZ |
1644 | req->r_request_started, -1, |
1645 | &req->r_caps_reservation); | |
1646 | if (ret < 0) { | |
355da1eb | 1647 | pr_err("fill_inode badness on %p\n", in); |
5495c2d0 | 1648 | if (d_really_is_negative(dn)) |
86b58d13 YZ |
1649 | iput(in); |
1650 | d_drop(dn); | |
fdd4e158 | 1651 | err = ret; |
d69ed05a | 1652 | goto next_item; |
355da1eb | 1653 | } |
86b58d13 | 1654 | |
2b0143b5 | 1655 | if (d_really_is_negative(dn)) { |
315f2408 YZ |
1656 | struct dentry *realdn; |
1657 | ||
1658 | if (ceph_security_xattr_deadlock(in)) { | |
1659 | dout(" skip splicing dn %p to inode %p" | |
1660 | " (security xattr deadlock)\n", dn, in); | |
1661 | iput(in); | |
1662 | skipped++; | |
1663 | goto next_item; | |
1664 | } | |
1665 | ||
1666 | realdn = splice_dentry(dn, in); | |
5cba372c YZ |
1667 | if (IS_ERR(realdn)) { |
1668 | err = PTR_ERR(realdn); | |
1669 | d_drop(dn); | |
86b58d13 YZ |
1670 | dn = NULL; |
1671 | goto next_item; | |
1672 | } | |
5cba372c | 1673 | dn = realdn; |
86b58d13 YZ |
1674 | } |
1675 | ||
f3c4ebe6 | 1676 | ceph_dentry(dn)->offset = rde->offset; |
86b58d13 | 1677 | |
f5d55f03 | 1678 | dvino = ceph_vino(d_inode(parent)); |
2a5beea3 | 1679 | update_dentry_lease(dn, rde->lease, req->r_session, |
f5d55f03 | 1680 | req->r_request_started, &tvino, &dvino); |
fdd4e158 | 1681 | |
315f2408 | 1682 | if (err == 0 && skipped == 0 && cache_ctl.index >= 0) { |
fdd4e158 YZ |
1683 | ret = fill_readdir_cache(d_inode(parent), dn, |
1684 | &cache_ctl, req); | |
1685 | if (ret < 0) | |
1686 | err = ret; | |
1687 | } | |
d69ed05a SW |
1688 | next_item: |
1689 | if (dn) | |
1690 | dput(dn); | |
355da1eb | 1691 | } |
355da1eb | 1692 | out: |
315f2408 | 1693 | if (err == 0 && skipped == 0) { |
bc2de10d | 1694 | set_bit(CEPH_MDS_R_DID_PREPOPULATE, &req->r_req_flags); |
fdd4e158 YZ |
1695 | req->r_readdir_cache_idx = cache_ctl.index; |
1696 | } | |
1697 | ceph_readdir_cache_release(&cache_ctl); | |
355da1eb SW |
1698 | dout("readdir_prepopulate done\n"); |
1699 | return err; | |
1700 | } | |
1701 | ||
efb0ca76 | 1702 | bool ceph_inode_set_size(struct inode *inode, loff_t size) |
355da1eb SW |
1703 | { |
1704 | struct ceph_inode_info *ci = ceph_inode(inode); | |
efb0ca76 | 1705 | bool ret; |
355da1eb | 1706 | |
be655596 | 1707 | spin_lock(&ci->i_ceph_lock); |
355da1eb | 1708 | dout("set_size %p %llu -> %llu\n", inode, inode->i_size, size); |
99c88e69 | 1709 | i_size_write(inode, size); |
224a7542 | 1710 | inode->i_blocks = calc_inode_blocks(size); |
355da1eb | 1711 | |
efb0ca76 | 1712 | ret = __ceph_should_report_size(ci); |
355da1eb | 1713 | |
be655596 | 1714 | spin_unlock(&ci->i_ceph_lock); |
355da1eb SW |
1715 | return ret; |
1716 | } | |
1717 | ||
1718 | /* | |
1719 | * Write back inode data in a worker thread. (This can't be done | |
1720 | * in the message handler context.) | |
1721 | */ | |
3c6f6b79 SW |
1722 | void ceph_queue_writeback(struct inode *inode) |
1723 | { | |
15a2015f | 1724 | ihold(inode); |
3c6f6b79 SW |
1725 | if (queue_work(ceph_inode_to_client(inode)->wb_wq, |
1726 | &ceph_inode(inode)->i_wb_work)) { | |
2c27c9a5 | 1727 | dout("ceph_queue_writeback %p\n", inode); |
3c6f6b79 | 1728 | } else { |
2c27c9a5 | 1729 | dout("ceph_queue_writeback %p failed\n", inode); |
15a2015f | 1730 | iput(inode); |
3c6f6b79 SW |
1731 | } |
1732 | } | |
1733 | ||
1734 | static void ceph_writeback_work(struct work_struct *work) | |
355da1eb SW |
1735 | { |
1736 | struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, | |
1737 | i_wb_work); | |
1738 | struct inode *inode = &ci->vfs_inode; | |
1739 | ||
1740 | dout("writeback %p\n", inode); | |
1741 | filemap_fdatawrite(&inode->i_data); | |
1742 | iput(inode); | |
1743 | } | |
1744 | ||
3c6f6b79 SW |
1745 | /* |
1746 | * queue an async invalidation | |
1747 | */ | |
1748 | void ceph_queue_invalidate(struct inode *inode) | |
1749 | { | |
15a2015f | 1750 | ihold(inode); |
3c6f6b79 SW |
1751 | if (queue_work(ceph_inode_to_client(inode)->pg_inv_wq, |
1752 | &ceph_inode(inode)->i_pg_inv_work)) { | |
1753 | dout("ceph_queue_invalidate %p\n", inode); | |
3c6f6b79 SW |
1754 | } else { |
1755 | dout("ceph_queue_invalidate %p failed\n", inode); | |
15a2015f | 1756 | iput(inode); |
3c6f6b79 SW |
1757 | } |
1758 | } | |
1759 | ||
355da1eb SW |
1760 | /* |
1761 | * Invalidate inode pages in a worker thread. (This can't be done | |
1762 | * in the message handler context.) | |
1763 | */ | |
3c6f6b79 | 1764 | static void ceph_invalidate_work(struct work_struct *work) |
355da1eb SW |
1765 | { |
1766 | struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, | |
1767 | i_pg_inv_work); | |
1768 | struct inode *inode = &ci->vfs_inode; | |
6c93df5d | 1769 | struct ceph_fs_client *fsc = ceph_inode_to_client(inode); |
355da1eb SW |
1770 | u32 orig_gen; |
1771 | int check = 0; | |
1772 | ||
b0d7c223 | 1773 | mutex_lock(&ci->i_truncate_mutex); |
6c93df5d | 1774 | |
52953d55 | 1775 | if (READ_ONCE(fsc->mount_state) == CEPH_MOUNT_SHUTDOWN) { |
6c93df5d YZ |
1776 | pr_warn_ratelimited("invalidate_pages %p %lld forced umount\n", |
1777 | inode, ceph_ino(inode)); | |
1778 | mapping_set_error(inode->i_mapping, -EIO); | |
1779 | truncate_pagecache(inode, 0); | |
1780 | mutex_unlock(&ci->i_truncate_mutex); | |
1781 | goto out; | |
1782 | } | |
1783 | ||
be655596 | 1784 | spin_lock(&ci->i_ceph_lock); |
355da1eb SW |
1785 | dout("invalidate_pages %p gen %d revoking %d\n", inode, |
1786 | ci->i_rdcache_gen, ci->i_rdcache_revoking); | |
cd045cb4 | 1787 | if (ci->i_rdcache_revoking != ci->i_rdcache_gen) { |
9563f88c YZ |
1788 | if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) |
1789 | check = 1; | |
be655596 | 1790 | spin_unlock(&ci->i_ceph_lock); |
b0d7c223 | 1791 | mutex_unlock(&ci->i_truncate_mutex); |
355da1eb SW |
1792 | goto out; |
1793 | } | |
1794 | orig_gen = ci->i_rdcache_gen; | |
be655596 | 1795 | spin_unlock(&ci->i_ceph_lock); |
355da1eb | 1796 | |
9abd4db7 YZ |
1797 | if (invalidate_inode_pages2(inode->i_mapping) < 0) { |
1798 | pr_err("invalidate_pages %p fails\n", inode); | |
1799 | } | |
355da1eb | 1800 | |
be655596 | 1801 | spin_lock(&ci->i_ceph_lock); |
cd045cb4 SW |
1802 | if (orig_gen == ci->i_rdcache_gen && |
1803 | orig_gen == ci->i_rdcache_revoking) { | |
355da1eb SW |
1804 | dout("invalidate_pages %p gen %d successful\n", inode, |
1805 | ci->i_rdcache_gen); | |
cd045cb4 | 1806 | ci->i_rdcache_revoking--; |
355da1eb SW |
1807 | check = 1; |
1808 | } else { | |
cd045cb4 SW |
1809 | dout("invalidate_pages %p gen %d raced, now %d revoking %d\n", |
1810 | inode, orig_gen, ci->i_rdcache_gen, | |
1811 | ci->i_rdcache_revoking); | |
9563f88c YZ |
1812 | if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE)) |
1813 | check = 1; | |
355da1eb | 1814 | } |
be655596 | 1815 | spin_unlock(&ci->i_ceph_lock); |
b0d7c223 | 1816 | mutex_unlock(&ci->i_truncate_mutex); |
9563f88c | 1817 | out: |
355da1eb SW |
1818 | if (check) |
1819 | ceph_check_caps(ci, 0, NULL); | |
355da1eb SW |
1820 | iput(inode); |
1821 | } | |
1822 | ||
1823 | ||
1824 | /* | |
3f99969f | 1825 | * called by trunc_wq; |
355da1eb SW |
1826 | * |
1827 | * We also truncate in a separate thread as well. | |
1828 | */ | |
3c6f6b79 | 1829 | static void ceph_vmtruncate_work(struct work_struct *work) |
355da1eb SW |
1830 | { |
1831 | struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, | |
1832 | i_vmtruncate_work); | |
1833 | struct inode *inode = &ci->vfs_inode; | |
1834 | ||
1835 | dout("vmtruncate_work %p\n", inode); | |
b415bf4f | 1836 | __ceph_do_pending_vmtruncate(inode); |
355da1eb SW |
1837 | iput(inode); |
1838 | } | |
1839 | ||
3c6f6b79 SW |
1840 | /* |
1841 | * Queue an async vmtruncate. If we fail to queue work, we will handle | |
1842 | * the truncation the next time we call __ceph_do_pending_vmtruncate. | |
1843 | */ | |
1844 | void ceph_queue_vmtruncate(struct inode *inode) | |
1845 | { | |
1846 | struct ceph_inode_info *ci = ceph_inode(inode); | |
1847 | ||
15a2015f | 1848 | ihold(inode); |
99ccbd22 | 1849 | |
640ef79d | 1850 | if (queue_work(ceph_sb_to_client(inode->i_sb)->trunc_wq, |
3c6f6b79 SW |
1851 | &ci->i_vmtruncate_work)) { |
1852 | dout("ceph_queue_vmtruncate %p\n", inode); | |
3c6f6b79 SW |
1853 | } else { |
1854 | dout("ceph_queue_vmtruncate %p failed, pending=%d\n", | |
1855 | inode, ci->i_truncate_pending); | |
15a2015f | 1856 | iput(inode); |
3c6f6b79 SW |
1857 | } |
1858 | } | |
1859 | ||
355da1eb | 1860 | /* |
355da1eb SW |
1861 | * Make sure any pending truncation is applied before doing anything |
1862 | * that may depend on it. | |
1863 | */ | |
b415bf4f | 1864 | void __ceph_do_pending_vmtruncate(struct inode *inode) |
355da1eb SW |
1865 | { |
1866 | struct ceph_inode_info *ci = ceph_inode(inode); | |
1867 | u64 to; | |
a85f50b6 | 1868 | int wrbuffer_refs, finish = 0; |
355da1eb | 1869 | |
b0d7c223 | 1870 | mutex_lock(&ci->i_truncate_mutex); |
355da1eb | 1871 | retry: |
be655596 | 1872 | spin_lock(&ci->i_ceph_lock); |
355da1eb SW |
1873 | if (ci->i_truncate_pending == 0) { |
1874 | dout("__do_pending_vmtruncate %p none pending\n", inode); | |
be655596 | 1875 | spin_unlock(&ci->i_ceph_lock); |
b0d7c223 | 1876 | mutex_unlock(&ci->i_truncate_mutex); |
355da1eb SW |
1877 | return; |
1878 | } | |
1879 | ||
1880 | /* | |
1881 | * make sure any dirty snapped pages are flushed before we | |
1882 | * possibly truncate them.. so write AND block! | |
1883 | */ | |
1884 | if (ci->i_wrbuffer_ref_head < ci->i_wrbuffer_ref) { | |
c8fd0d37 | 1885 | spin_unlock(&ci->i_ceph_lock); |
355da1eb SW |
1886 | dout("__do_pending_vmtruncate %p flushing snaps first\n", |
1887 | inode); | |
355da1eb SW |
1888 | filemap_write_and_wait_range(&inode->i_data, 0, |
1889 | inode->i_sb->s_maxbytes); | |
1890 | goto retry; | |
1891 | } | |
1892 | ||
b0d7c223 YZ |
1893 | /* there should be no reader or writer */ |
1894 | WARN_ON_ONCE(ci->i_rd_ref || ci->i_wr_ref); | |
1895 | ||
355da1eb SW |
1896 | to = ci->i_truncate_size; |
1897 | wrbuffer_refs = ci->i_wrbuffer_ref; | |
1898 | dout("__do_pending_vmtruncate %p (%d) to %lld\n", inode, | |
1899 | ci->i_truncate_pending, to); | |
be655596 | 1900 | spin_unlock(&ci->i_ceph_lock); |
355da1eb | 1901 | |
4e217b5d | 1902 | truncate_pagecache(inode, to); |
355da1eb | 1903 | |
be655596 | 1904 | spin_lock(&ci->i_ceph_lock); |
a85f50b6 YZ |
1905 | if (to == ci->i_truncate_size) { |
1906 | ci->i_truncate_pending = 0; | |
1907 | finish = 1; | |
1908 | } | |
be655596 | 1909 | spin_unlock(&ci->i_ceph_lock); |
a85f50b6 YZ |
1910 | if (!finish) |
1911 | goto retry; | |
355da1eb | 1912 | |
b0d7c223 YZ |
1913 | mutex_unlock(&ci->i_truncate_mutex); |
1914 | ||
355da1eb SW |
1915 | if (wrbuffer_refs == 0) |
1916 | ceph_check_caps(ci, CHECK_CAPS_AUTHONLY, NULL); | |
a85f50b6 YZ |
1917 | |
1918 | wake_up_all(&ci->i_cap_wq); | |
355da1eb SW |
1919 | } |
1920 | ||
355da1eb SW |
1921 | /* |
1922 | * symlinks | |
1923 | */ | |
355da1eb | 1924 | static const struct inode_operations ceph_symlink_iops = { |
6b255391 | 1925 | .get_link = simple_get_link, |
0b932672 YZ |
1926 | .setattr = ceph_setattr, |
1927 | .getattr = ceph_getattr, | |
0b932672 | 1928 | .listxattr = ceph_listxattr, |
355da1eb SW |
1929 | }; |
1930 | ||
a26fecca | 1931 | int __ceph_setattr(struct inode *inode, struct iattr *attr) |
355da1eb | 1932 | { |
355da1eb | 1933 | struct ceph_inode_info *ci = ceph_inode(inode); |
355da1eb SW |
1934 | const unsigned int ia_valid = attr->ia_valid; |
1935 | struct ceph_mds_request *req; | |
a26fecca | 1936 | struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc; |
f66fd9f0 | 1937 | struct ceph_cap_flush *prealloc_cf; |
355da1eb SW |
1938 | int issued; |
1939 | int release = 0, dirtied = 0; | |
1940 | int mask = 0; | |
1941 | int err = 0; | |
fca65b4a | 1942 | int inode_dirty_flags = 0; |
604d1b02 | 1943 | bool lock_snap_rwsem = false; |
355da1eb | 1944 | |
f66fd9f0 YZ |
1945 | prealloc_cf = ceph_alloc_cap_flush(); |
1946 | if (!prealloc_cf) | |
1947 | return -ENOMEM; | |
1948 | ||
355da1eb SW |
1949 | req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETATTR, |
1950 | USE_AUTH_MDS); | |
f66fd9f0 YZ |
1951 | if (IS_ERR(req)) { |
1952 | ceph_free_cap_flush(prealloc_cf); | |
355da1eb | 1953 | return PTR_ERR(req); |
f66fd9f0 | 1954 | } |
355da1eb | 1955 | |
be655596 | 1956 | spin_lock(&ci->i_ceph_lock); |
355da1eb | 1957 | issued = __ceph_caps_issued(ci, NULL); |
604d1b02 YZ |
1958 | |
1959 | if (!ci->i_head_snapc && | |
1960 | (issued & (CEPH_CAP_ANY_EXCL | CEPH_CAP_FILE_WR))) { | |
1961 | lock_snap_rwsem = true; | |
1962 | if (!down_read_trylock(&mdsc->snap_rwsem)) { | |
1963 | spin_unlock(&ci->i_ceph_lock); | |
1964 | down_read(&mdsc->snap_rwsem); | |
1965 | spin_lock(&ci->i_ceph_lock); | |
1966 | issued = __ceph_caps_issued(ci, NULL); | |
1967 | } | |
1968 | } | |
1969 | ||
355da1eb SW |
1970 | dout("setattr %p issued %s\n", inode, ceph_cap_string(issued)); |
1971 | ||
1972 | if (ia_valid & ATTR_UID) { | |
1973 | dout("setattr %p uid %d -> %d\n", inode, | |
bd2bae6a EB |
1974 | from_kuid(&init_user_ns, inode->i_uid), |
1975 | from_kuid(&init_user_ns, attr->ia_uid)); | |
355da1eb SW |
1976 | if (issued & CEPH_CAP_AUTH_EXCL) { |
1977 | inode->i_uid = attr->ia_uid; | |
1978 | dirtied |= CEPH_CAP_AUTH_EXCL; | |
1979 | } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || | |
ab871b90 EB |
1980 | !uid_eq(attr->ia_uid, inode->i_uid)) { |
1981 | req->r_args.setattr.uid = cpu_to_le32( | |
1982 | from_kuid(&init_user_ns, attr->ia_uid)); | |
355da1eb SW |
1983 | mask |= CEPH_SETATTR_UID; |
1984 | release |= CEPH_CAP_AUTH_SHARED; | |
1985 | } | |
1986 | } | |
1987 | if (ia_valid & ATTR_GID) { | |
1988 | dout("setattr %p gid %d -> %d\n", inode, | |
bd2bae6a EB |
1989 | from_kgid(&init_user_ns, inode->i_gid), |
1990 | from_kgid(&init_user_ns, attr->ia_gid)); | |
355da1eb SW |
1991 | if (issued & CEPH_CAP_AUTH_EXCL) { |
1992 | inode->i_gid = attr->ia_gid; | |
1993 | dirtied |= CEPH_CAP_AUTH_EXCL; | |
1994 | } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || | |
ab871b90 EB |
1995 | !gid_eq(attr->ia_gid, inode->i_gid)) { |
1996 | req->r_args.setattr.gid = cpu_to_le32( | |
1997 | from_kgid(&init_user_ns, attr->ia_gid)); | |
355da1eb SW |
1998 | mask |= CEPH_SETATTR_GID; |
1999 | release |= CEPH_CAP_AUTH_SHARED; | |
2000 | } | |
2001 | } | |
2002 | if (ia_valid & ATTR_MODE) { | |
2003 | dout("setattr %p mode 0%o -> 0%o\n", inode, inode->i_mode, | |
2004 | attr->ia_mode); | |
2005 | if (issued & CEPH_CAP_AUTH_EXCL) { | |
2006 | inode->i_mode = attr->ia_mode; | |
2007 | dirtied |= CEPH_CAP_AUTH_EXCL; | |
2008 | } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 || | |
2009 | attr->ia_mode != inode->i_mode) { | |
7221fe4c | 2010 | inode->i_mode = attr->ia_mode; |
355da1eb SW |
2011 | req->r_args.setattr.mode = cpu_to_le32(attr->ia_mode); |
2012 | mask |= CEPH_SETATTR_MODE; | |
2013 | release |= CEPH_CAP_AUTH_SHARED; | |
2014 | } | |
2015 | } | |
2016 | ||
2017 | if (ia_valid & ATTR_ATIME) { | |
2018 | dout("setattr %p atime %ld.%ld -> %ld.%ld\n", inode, | |
2019 | inode->i_atime.tv_sec, inode->i_atime.tv_nsec, | |
2020 | attr->ia_atime.tv_sec, attr->ia_atime.tv_nsec); | |
2021 | if (issued & CEPH_CAP_FILE_EXCL) { | |
2022 | ci->i_time_warp_seq++; | |
2023 | inode->i_atime = attr->ia_atime; | |
2024 | dirtied |= CEPH_CAP_FILE_EXCL; | |
2025 | } else if ((issued & CEPH_CAP_FILE_WR) && | |
2026 | timespec_compare(&inode->i_atime, | |
2027 | &attr->ia_atime) < 0) { | |
2028 | inode->i_atime = attr->ia_atime; | |
2029 | dirtied |= CEPH_CAP_FILE_WR; | |
2030 | } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || | |
2031 | !timespec_equal(&inode->i_atime, &attr->ia_atime)) { | |
2032 | ceph_encode_timespec(&req->r_args.setattr.atime, | |
2033 | &attr->ia_atime); | |
2034 | mask |= CEPH_SETATTR_ATIME; | |
be70489e YZ |
2035 | release |= CEPH_CAP_FILE_SHARED | |
2036 | CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR; | |
355da1eb SW |
2037 | } |
2038 | } | |
2039 | if (ia_valid & ATTR_MTIME) { | |
2040 | dout("setattr %p mtime %ld.%ld -> %ld.%ld\n", inode, | |
2041 | inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec, | |
2042 | attr->ia_mtime.tv_sec, attr->ia_mtime.tv_nsec); | |
2043 | if (issued & CEPH_CAP_FILE_EXCL) { | |
2044 | ci->i_time_warp_seq++; | |
2045 | inode->i_mtime = attr->ia_mtime; | |
2046 | dirtied |= CEPH_CAP_FILE_EXCL; | |
2047 | } else if ((issued & CEPH_CAP_FILE_WR) && | |
2048 | timespec_compare(&inode->i_mtime, | |
2049 | &attr->ia_mtime) < 0) { | |
2050 | inode->i_mtime = attr->ia_mtime; | |
2051 | dirtied |= CEPH_CAP_FILE_WR; | |
2052 | } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || | |
2053 | !timespec_equal(&inode->i_mtime, &attr->ia_mtime)) { | |
2054 | ceph_encode_timespec(&req->r_args.setattr.mtime, | |
2055 | &attr->ia_mtime); | |
2056 | mask |= CEPH_SETATTR_MTIME; | |
be70489e YZ |
2057 | release |= CEPH_CAP_FILE_SHARED | |
2058 | CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR; | |
355da1eb SW |
2059 | } |
2060 | } | |
2061 | if (ia_valid & ATTR_SIZE) { | |
2062 | dout("setattr %p size %lld -> %lld\n", inode, | |
2063 | inode->i_size, attr->ia_size); | |
355da1eb SW |
2064 | if ((issued & CEPH_CAP_FILE_EXCL) && |
2065 | attr->ia_size > inode->i_size) { | |
99c88e69 | 2066 | i_size_write(inode, attr->ia_size); |
224a7542 | 2067 | inode->i_blocks = calc_inode_blocks(attr->ia_size); |
355da1eb SW |
2068 | ci->i_reported_size = attr->ia_size; |
2069 | dirtied |= CEPH_CAP_FILE_EXCL; | |
2070 | } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 || | |
2071 | attr->ia_size != inode->i_size) { | |
2072 | req->r_args.setattr.size = cpu_to_le64(attr->ia_size); | |
2073 | req->r_args.setattr.old_size = | |
2074 | cpu_to_le64(inode->i_size); | |
2075 | mask |= CEPH_SETATTR_SIZE; | |
be70489e YZ |
2076 | release |= CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_EXCL | |
2077 | CEPH_CAP_FILE_RD | CEPH_CAP_FILE_WR; | |
355da1eb SW |
2078 | } |
2079 | } | |
2080 | ||
2081 | /* these do nothing */ | |
2082 | if (ia_valid & ATTR_CTIME) { | |
2083 | bool only = (ia_valid & (ATTR_SIZE|ATTR_MTIME|ATTR_ATIME| | |
2084 | ATTR_MODE|ATTR_UID|ATTR_GID)) == 0; | |
2085 | dout("setattr %p ctime %ld.%ld -> %ld.%ld (%s)\n", inode, | |
2086 | inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec, | |
2087 | attr->ia_ctime.tv_sec, attr->ia_ctime.tv_nsec, | |
2088 | only ? "ctime only" : "ignored"); | |
355da1eb SW |
2089 | if (only) { |
2090 | /* | |
2091 | * if kernel wants to dirty ctime but nothing else, | |
2092 | * we need to choose a cap to dirty under, or do | |
2093 | * a almost-no-op setattr | |
2094 | */ | |
2095 | if (issued & CEPH_CAP_AUTH_EXCL) | |
2096 | dirtied |= CEPH_CAP_AUTH_EXCL; | |
2097 | else if (issued & CEPH_CAP_FILE_EXCL) | |
2098 | dirtied |= CEPH_CAP_FILE_EXCL; | |
2099 | else if (issued & CEPH_CAP_XATTR_EXCL) | |
2100 | dirtied |= CEPH_CAP_XATTR_EXCL; | |
2101 | else | |
2102 | mask |= CEPH_SETATTR_CTIME; | |
2103 | } | |
2104 | } | |
2105 | if (ia_valid & ATTR_FILE) | |
2106 | dout("setattr %p ATTR_FILE ... hrm!\n", inode); | |
2107 | ||
2108 | if (dirtied) { | |
f66fd9f0 YZ |
2109 | inode_dirty_flags = __ceph_mark_dirty_caps(ci, dirtied, |
2110 | &prealloc_cf); | |
4ca2fea6 | 2111 | inode->i_ctime = attr->ia_ctime; |
355da1eb SW |
2112 | } |
2113 | ||
2114 | release &= issued; | |
be655596 | 2115 | spin_unlock(&ci->i_ceph_lock); |
604d1b02 YZ |
2116 | if (lock_snap_rwsem) |
2117 | up_read(&mdsc->snap_rwsem); | |
355da1eb | 2118 | |
fca65b4a SW |
2119 | if (inode_dirty_flags) |
2120 | __mark_inode_dirty(inode, inode_dirty_flags); | |
2121 | ||
7221fe4c | 2122 | |
355da1eb | 2123 | if (mask) { |
70b666c3 SW |
2124 | req->r_inode = inode; |
2125 | ihold(inode); | |
355da1eb SW |
2126 | req->r_inode_drop = release; |
2127 | req->r_args.setattr.mask = cpu_to_le32(mask); | |
2128 | req->r_num_caps = 1; | |
4ca2fea6 | 2129 | req->r_stamp = attr->ia_ctime; |
752c8bdc | 2130 | err = ceph_mdsc_do_request(mdsc, NULL, req); |
355da1eb SW |
2131 | } |
2132 | dout("setattr %p result=%d (%s locally, %d remote)\n", inode, err, | |
2133 | ceph_cap_string(dirtied), mask); | |
2134 | ||
355da1eb | 2135 | ceph_mdsc_put_request(req); |
f66fd9f0 | 2136 | ceph_free_cap_flush(prealloc_cf); |
8179a101 YZ |
2137 | |
2138 | if (err >= 0 && (mask & CEPH_SETATTR_SIZE)) | |
2139 | __ceph_do_pending_vmtruncate(inode); | |
2140 | ||
355da1eb SW |
2141 | return err; |
2142 | } | |
2143 | ||
a26fecca AG |
2144 | /* |
2145 | * setattr | |
2146 | */ | |
2147 | int ceph_setattr(struct dentry *dentry, struct iattr *attr) | |
2148 | { | |
fd5472ed JK |
2149 | struct inode *inode = d_inode(dentry); |
2150 | int err; | |
2151 | ||
2152 | if (ceph_snap(inode) != CEPH_NOSNAP) | |
2153 | return -EROFS; | |
2154 | ||
31051c85 | 2155 | err = setattr_prepare(dentry, attr); |
fd5472ed JK |
2156 | if (err != 0) |
2157 | return err; | |
2158 | ||
2b83845f LH |
2159 | if ((attr->ia_valid & ATTR_SIZE) && |
2160 | ceph_quota_is_max_bytes_exceeded(inode, attr->ia_size)) | |
2161 | return -EDQUOT; | |
2162 | ||
8179a101 YZ |
2163 | err = __ceph_setattr(inode, attr); |
2164 | ||
2165 | if (err >= 0 && (attr->ia_valid & ATTR_MODE)) | |
2166 | err = posix_acl_chmod(inode, attr->ia_mode); | |
2167 | ||
2168 | return err; | |
a26fecca AG |
2169 | } |
2170 | ||
355da1eb SW |
2171 | /* |
2172 | * Verify that we have a lease on the given mask. If not, | |
2173 | * do a getattr against an mds. | |
2174 | */ | |
01deead0 YZ |
2175 | int __ceph_do_getattr(struct inode *inode, struct page *locked_page, |
2176 | int mask, bool force) | |
355da1eb | 2177 | { |
3d14c5d2 YS |
2178 | struct ceph_fs_client *fsc = ceph_sb_to_client(inode->i_sb); |
2179 | struct ceph_mds_client *mdsc = fsc->mdsc; | |
355da1eb SW |
2180 | struct ceph_mds_request *req; |
2181 | int err; | |
2182 | ||
2183 | if (ceph_snap(inode) == CEPH_SNAPDIR) { | |
2184 | dout("do_getattr inode %p SNAPDIR\n", inode); | |
2185 | return 0; | |
2186 | } | |
2187 | ||
01deead0 YZ |
2188 | dout("do_getattr inode %p mask %s mode 0%o\n", |
2189 | inode, ceph_cap_string(mask), inode->i_mode); | |
508b32d8 | 2190 | if (!force && ceph_caps_issued_mask(ceph_inode(inode), mask, 1)) |
355da1eb SW |
2191 | return 0; |
2192 | ||
2193 | req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_GETATTR, USE_ANY_MDS); | |
2194 | if (IS_ERR(req)) | |
2195 | return PTR_ERR(req); | |
70b666c3 SW |
2196 | req->r_inode = inode; |
2197 | ihold(inode); | |
355da1eb SW |
2198 | req->r_num_caps = 1; |
2199 | req->r_args.getattr.mask = cpu_to_le32(mask); | |
01deead0 | 2200 | req->r_locked_page = locked_page; |
355da1eb | 2201 | err = ceph_mdsc_do_request(mdsc, NULL, req); |
01deead0 YZ |
2202 | if (locked_page && err == 0) { |
2203 | u64 inline_version = req->r_reply_info.targeti.inline_version; | |
2204 | if (inline_version == 0) { | |
2205 | /* the reply is supposed to contain inline data */ | |
2206 | err = -EINVAL; | |
2207 | } else if (inline_version == CEPH_INLINE_NONE) { | |
2208 | err = -ENODATA; | |
2209 | } else { | |
2210 | err = req->r_reply_info.targeti.inline_len; | |
2211 | } | |
2212 | } | |
355da1eb SW |
2213 | ceph_mdsc_put_request(req); |
2214 | dout("do_getattr result=%d\n", err); | |
2215 | return err; | |
2216 | } | |
2217 | ||
2218 | ||
2219 | /* | |
2220 | * Check inode permissions. We verify we have a valid value for | |
2221 | * the AUTH cap, then call the generic handler. | |
2222 | */ | |
10556cb2 | 2223 | int ceph_permission(struct inode *inode, int mask) |
355da1eb | 2224 | { |
b74c79e9 NP |
2225 | int err; |
2226 | ||
10556cb2 | 2227 | if (mask & MAY_NOT_BLOCK) |
b74c79e9 NP |
2228 | return -ECHILD; |
2229 | ||
508b32d8 | 2230 | err = ceph_do_getattr(inode, CEPH_CAP_AUTH_SHARED, false); |
355da1eb SW |
2231 | |
2232 | if (!err) | |
2830ba7f | 2233 | err = generic_permission(inode, mask); |
355da1eb SW |
2234 | return err; |
2235 | } | |
2236 | ||
2237 | /* | |
2238 | * Get all attributes. Hopefully somedata we'll have a statlite() | |
2239 | * and can limit the fields we require to be accurate. | |
2240 | */ | |
a528d35e DH |
2241 | int ceph_getattr(const struct path *path, struct kstat *stat, |
2242 | u32 request_mask, unsigned int flags) | |
355da1eb | 2243 | { |
a528d35e | 2244 | struct inode *inode = d_inode(path->dentry); |
232d4b01 | 2245 | struct ceph_inode_info *ci = ceph_inode(inode); |
355da1eb SW |
2246 | int err; |
2247 | ||
508b32d8 | 2248 | err = ceph_do_getattr(inode, CEPH_STAT_CAP_INODE_ALL, false); |
355da1eb SW |
2249 | if (!err) { |
2250 | generic_fillattr(inode, stat); | |
ad1fee96 | 2251 | stat->ino = ceph_translate_ino(inode->i_sb, inode->i_ino); |
355da1eb SW |
2252 | if (ceph_snap(inode) != CEPH_NOSNAP) |
2253 | stat->dev = ceph_snap(inode); | |
2254 | else | |
2255 | stat->dev = 0; | |
232d4b01 | 2256 | if (S_ISDIR(inode->i_mode)) { |
1c1266bb YS |
2257 | if (ceph_test_mount_opt(ceph_sb_to_client(inode->i_sb), |
2258 | RBYTES)) | |
2259 | stat->size = ci->i_rbytes; | |
2260 | else | |
2261 | stat->size = ci->i_files + ci->i_subdirs; | |
232d4b01 | 2262 | stat->blocks = 0; |
355da1eb | 2263 | stat->blksize = 65536; |
232d4b01 | 2264 | } |
355da1eb SW |
2265 | } |
2266 | return err; | |
2267 | } |