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