1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/ceph/ceph_debug.h>
4 #include <linux/module.h>
6 #include <linux/slab.h>
7 #include <linux/string.h>
8 #include <linux/uaccess.h>
9 #include <linux/kernel.h>
10 #include <linux/writeback.h>
11 #include <linux/vmalloc.h>
12 #include <linux/xattr.h>
13 #include <linux/posix_acl.h>
14 #include <linux/random.h>
15 #include <linux/sort.h>
18 #include "mds_client.h"
20 #include <linux/ceph/decode.h>
23 * Ceph inode operations
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.
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).
34 static const struct inode_operations ceph_symlink_iops;
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);
41 * find or create an inode, given the ceph ino number
43 static int ceph_set_ino_cb(struct inode *inode, void *data)
45 ceph_inode(inode)->i_vino = *(struct ceph_vino *)data;
46 inode->i_ino = ceph_vino_to_ino(*(struct ceph_vino *)data);
50 struct inode *ceph_get_inode(struct super_block *sb, struct ceph_vino vino)
53 ino_t t = ceph_vino_to_ino(vino);
55 inode = iget5_locked(sb, t, ceph_ino_compare, ceph_set_ino_cb, &vino);
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);
64 dout("get_inode on %lu=%llx.%llx got %p\n", inode->i_ino, vino.ino,
70 * get/constuct snapdir inode for a given directory
72 struct inode *ceph_get_snapdir(struct inode *parent)
74 struct ceph_vino vino = {
75 .ino = ceph_ino(parent),
78 struct inode *inode = ceph_get_inode(parent->i_sb, vino);
79 struct ceph_inode_info *ci = ceph_inode(inode);
81 BUG_ON(!S_ISDIR(parent->i_mode));
84 inode->i_mode = parent->i_mode;
85 inode->i_uid = parent->i_uid;
86 inode->i_gid = parent->i_gid;
87 inode->i_op = &ceph_snapdir_iops;
88 inode->i_fop = &ceph_snapdir_fops;
89 ci->i_snap_caps = CEPH_CAP_PIN; /* so we can open */
94 const struct inode_operations ceph_file_iops = {
95 .permission = ceph_permission,
96 .setattr = ceph_setattr,
97 .getattr = ceph_getattr,
98 .listxattr = ceph_listxattr,
99 .get_acl = ceph_get_acl,
100 .set_acl = ceph_set_acl,
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
113 * find/create a frag in the tree
115 static struct ceph_inode_frag *__get_or_create_frag(struct ceph_inode_info *ci,
119 struct rb_node *parent = NULL;
120 struct ceph_inode_frag *frag;
123 p = &ci->i_fragtree.rb_node;
126 frag = rb_entry(parent, struct ceph_inode_frag, node);
127 c = ceph_frag_compare(f, frag->frag);
136 frag = kmalloc(sizeof(*frag), GFP_NOFS);
138 return ERR_PTR(-ENOMEM);
145 rb_link_node(&frag->node, parent, p);
146 rb_insert_color(&frag->node, &ci->i_fragtree);
148 dout("get_or_create_frag added %llx.%llx frag %x\n",
149 ceph_vinop(&ci->vfs_inode), f);
154 * find a specific frag @f
156 struct ceph_inode_frag *__ceph_find_frag(struct ceph_inode_info *ci, u32 f)
158 struct rb_node *n = ci->i_fragtree.rb_node;
161 struct ceph_inode_frag *frag =
162 rb_entry(n, struct ceph_inode_frag, node);
163 int c = ceph_frag_compare(f, frag->frag);
175 * Choose frag containing the given value @v. If @pfrag is
176 * specified, copy the frag delegation info to the caller if
179 static u32 __ceph_choose_frag(struct ceph_inode_info *ci, u32 v,
180 struct ceph_inode_frag *pfrag, int *found)
182 u32 t = ceph_frag_make(0, 0);
183 struct ceph_inode_frag *frag;
191 WARN_ON(!ceph_frag_contains_value(t, v));
192 frag = __ceph_find_frag(ci, t);
194 break; /* t is a leaf */
195 if (frag->split_by == 0) {
197 memcpy(pfrag, frag, sizeof(*pfrag));
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)) {
216 dout("choose_frag(%x) = %x\n", v, t);
221 u32 ceph_choose_frag(struct ceph_inode_info *ci, u32 v,
222 struct ceph_inode_frag *pfrag, int *found)
225 mutex_lock(&ci->i_fragtree_mutex);
226 ret = __ceph_choose_frag(ci, v, pfrag, found);
227 mutex_unlock(&ci->i_fragtree_mutex);
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)
236 static int ceph_fill_dirfrag(struct inode *inode,
237 struct ceph_mds_reply_dirfrag *dirinfo)
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);
248 spin_lock(&ci->i_ceph_lock);
250 diri_auth = ci->i_auth_cap->mds;
251 spin_unlock(&ci->i_ceph_lock);
253 if (mds == -1) /* CDIR_AUTH_PARENT */
256 mutex_lock(&ci->i_fragtree_mutex);
257 if (ndist == 0 && mds == diri_auth) {
258 /* no delegation info needed. */
259 frag = __ceph_find_frag(ci, id);
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);
269 /* tree branch, keep and clear */
270 dout("fill_dirfrag cleared %llx.%llx frag %x"
271 " referral\n", ceph_vinop(inode), id);
279 /* find/add this frag to store mds delegation info */
280 frag = __get_or_create_frag(ci, id);
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));
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);
298 mutex_unlock(&ci->i_fragtree_mutex);
302 static int frag_tree_split_cmp(const void *l, const void *r)
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;
306 return ceph_frag_compare(le32_to_cpu(ls->frag),
307 le32_to_cpu(rs->frag));
310 static bool is_frag_child(u32 f, struct ceph_inode_frag *frag)
313 return f == ceph_frag_make(0, 0);
314 if (ceph_frag_bits(f) != ceph_frag_bits(frag->frag) + frag->split_by)
316 return ceph_frag_contains_value(frag->frag, ceph_frag_value(f));
319 static int ceph_fill_fragtree(struct inode *inode,
320 struct ceph_frag_tree_head *fragtree,
321 struct ceph_mds_reply_dirfrag *dirinfo)
323 struct ceph_inode_info *ci = ceph_inode(inode);
324 struct ceph_inode_frag *frag, *prev_frag = NULL;
325 struct rb_node *rb_node;
326 unsigned i, split_by, nsplits;
330 mutex_lock(&ci->i_fragtree_mutex);
331 nsplits = le32_to_cpu(fragtree->nsplits);
332 if (nsplits != ci->i_fragtree_nsplits) {
334 } else if (nsplits) {
335 i = prandom_u32() % nsplits;
336 id = le32_to_cpu(fragtree->splits[i].frag);
337 if (!__ceph_find_frag(ci, id))
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))
345 if (!update && dirinfo) {
346 id = le32_to_cpu(dirinfo->frag);
347 if (id != __ceph_choose_frag(ci, id, NULL, NULL))
354 sort(fragtree->splits, nsplits, sizeof(fragtree->splits[0]),
355 frag_tree_split_cmp, NULL);
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);
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);
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)
376 rb_node = rb_next(rb_node);
379 rb_node = rb_next(rb_node);
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);
384 if (frag->split_by > 0)
385 ci->i_fragtree_nsplits--;
391 frag = __get_or_create_frag(ci, id);
395 if (frag->split_by == 0)
396 ci->i_fragtree_nsplits++;
397 frag->split_by = split_by;
398 dout(" frag %x split by %d\n", frag->frag, frag->split_by);
402 frag = rb_entry(rb_node, struct ceph_inode_frag, node);
403 rb_node = rb_next(rb_node);
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);
408 if (frag->split_by > 0)
409 ci->i_fragtree_nsplits--;
414 mutex_unlock(&ci->i_fragtree_mutex);
419 * initialize a newly allocated inode.
421 struct inode *ceph_alloc_inode(struct super_block *sb)
423 struct ceph_inode_info *ci;
426 ci = kmem_cache_alloc(ceph_inode_cachep, GFP_NOFS);
430 dout("alloc_inode %p\n", &ci->vfs_inode);
432 spin_lock_init(&ci->i_ceph_lock);
435 ci->i_inline_version = 0;
436 ci->i_time_warp_seq = 0;
437 ci->i_ceph_flags = 0;
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);
442 ci->i_symlink = NULL;
444 memset(&ci->i_dir_layout, 0, sizeof(ci->i_dir_layout));
445 RCU_INIT_POINTER(ci->i_layout.pool_ns, NULL);
447 ci->i_fragtree = RB_ROOT;
448 mutex_init(&ci->i_fragtree_mutex);
450 ci->i_xattrs.blob = NULL;
451 ci->i_xattrs.prealloc_blob = NULL;
452 ci->i_xattrs.dirty = false;
453 ci->i_xattrs.index = RB_ROOT;
454 ci->i_xattrs.count = 0;
455 ci->i_xattrs.names_size = 0;
456 ci->i_xattrs.vals_size = 0;
457 ci->i_xattrs.version = 0;
458 ci->i_xattrs.index_version = 0;
460 ci->i_caps = RB_ROOT;
461 ci->i_auth_cap = NULL;
462 ci->i_dirty_caps = 0;
463 ci->i_flushing_caps = 0;
464 INIT_LIST_HEAD(&ci->i_dirty_item);
465 INIT_LIST_HEAD(&ci->i_flushing_item);
466 ci->i_prealloc_cap_flush = NULL;
467 INIT_LIST_HEAD(&ci->i_cap_flush_list);
468 init_waitqueue_head(&ci->i_cap_wq);
469 ci->i_hold_caps_min = 0;
470 ci->i_hold_caps_max = 0;
471 INIT_LIST_HEAD(&ci->i_cap_delay_list);
472 INIT_LIST_HEAD(&ci->i_cap_snaps);
473 ci->i_head_snapc = NULL;
476 for (i = 0; i < CEPH_FILE_MODE_BITS; i++)
477 ci->i_nr_by_mode[i] = 0;
479 mutex_init(&ci->i_truncate_mutex);
480 ci->i_truncate_seq = 0;
481 ci->i_truncate_size = 0;
482 ci->i_truncate_pending = 0;
485 ci->i_reported_size = 0;
486 ci->i_wanted_max_size = 0;
487 ci->i_requested_max_size = 0;
491 ci->i_rdcache_ref = 0;
494 ci->i_wrbuffer_ref = 0;
495 ci->i_wrbuffer_ref_head = 0;
496 atomic_set(&ci->i_filelock_ref, 0);
497 ci->i_shared_gen = 0;
498 ci->i_rdcache_gen = 0;
499 ci->i_rdcache_revoking = 0;
501 INIT_LIST_HEAD(&ci->i_unsafe_dirops);
502 INIT_LIST_HEAD(&ci->i_unsafe_iops);
503 spin_lock_init(&ci->i_unsafe_lock);
505 ci->i_snap_realm = NULL;
506 INIT_LIST_HEAD(&ci->i_snap_realm_item);
507 INIT_LIST_HEAD(&ci->i_snap_flush_item);
509 INIT_WORK(&ci->i_wb_work, ceph_writeback_work);
510 INIT_WORK(&ci->i_pg_inv_work, ceph_invalidate_work);
512 INIT_WORK(&ci->i_vmtruncate_work, ceph_vmtruncate_work);
514 ceph_fscache_inode_init(ci);
516 return &ci->vfs_inode;
519 static void ceph_i_callback(struct rcu_head *head)
521 struct inode *inode = container_of(head, struct inode, i_rcu);
522 struct ceph_inode_info *ci = ceph_inode(inode);
524 kmem_cache_free(ceph_inode_cachep, ci);
527 void ceph_destroy_inode(struct inode *inode)
529 struct ceph_inode_info *ci = ceph_inode(inode);
530 struct ceph_inode_frag *frag;
533 dout("destroy_inode %p ino %llx.%llx\n", inode, ceph_vinop(inode));
535 ceph_fscache_unregister_inode_cookie(ci);
537 ceph_queue_caps_release(inode);
540 * we may still have a snap_realm reference if there are stray
541 * caps in i_snap_caps.
543 if (ci->i_snap_realm) {
544 struct ceph_mds_client *mdsc =
545 ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc;
546 struct ceph_snap_realm *realm = ci->i_snap_realm;
548 dout(" dropping residual ref to snap realm %p\n", realm);
549 spin_lock(&realm->inodes_with_caps_lock);
550 list_del_init(&ci->i_snap_realm_item);
551 spin_unlock(&realm->inodes_with_caps_lock);
552 ceph_put_snap_realm(mdsc, realm);
555 kfree(ci->i_symlink);
556 while ((n = rb_first(&ci->i_fragtree)) != NULL) {
557 frag = rb_entry(n, struct ceph_inode_frag, node);
558 rb_erase(n, &ci->i_fragtree);
561 ci->i_fragtree_nsplits = 0;
563 __ceph_destroy_xattrs(ci);
564 if (ci->i_xattrs.blob)
565 ceph_buffer_put(ci->i_xattrs.blob);
566 if (ci->i_xattrs.prealloc_blob)
567 ceph_buffer_put(ci->i_xattrs.prealloc_blob);
569 ceph_put_string(rcu_dereference_raw(ci->i_layout.pool_ns));
571 call_rcu(&inode->i_rcu, ceph_i_callback);
574 int ceph_drop_inode(struct inode *inode)
577 * Positve dentry and corresponding inode are always accompanied
578 * in MDS reply. So no need to keep inode in the cache after
579 * dropping all its aliases.
584 static inline blkcnt_t calc_inode_blocks(u64 size)
586 return (size + (1<<9) - 1) >> 9;
590 * Helpers to fill in size, ctime, mtime, and atime. We have to be
591 * careful because either the client or MDS may have more up to date
592 * info, depending on which capabilities are held, and whether
593 * time_warp_seq or truncate_seq have increased. (Ordinarily, mtime
594 * and size are monotonically increasing, except when utimes() or
595 * truncate() increments the corresponding _seq values.)
597 int ceph_fill_file_size(struct inode *inode, int issued,
598 u32 truncate_seq, u64 truncate_size, u64 size)
600 struct ceph_inode_info *ci = ceph_inode(inode);
603 if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) > 0 ||
604 (truncate_seq == ci->i_truncate_seq && size > inode->i_size)) {
605 dout("size %lld -> %llu\n", inode->i_size, size);
606 if (size > 0 && S_ISDIR(inode->i_mode)) {
607 pr_err("fill_file_size non-zero size for directory\n");
610 i_size_write(inode, size);
611 inode->i_blocks = calc_inode_blocks(size);
612 ci->i_reported_size = size;
613 if (truncate_seq != ci->i_truncate_seq) {
614 dout("truncate_seq %u -> %u\n",
615 ci->i_truncate_seq, truncate_seq);
616 ci->i_truncate_seq = truncate_seq;
618 /* the MDS should have revoked these caps */
619 WARN_ON_ONCE(issued & (CEPH_CAP_FILE_EXCL |
622 CEPH_CAP_FILE_LAZYIO));
624 * If we hold relevant caps, or in the case where we're
625 * not the only client referencing this file and we
626 * don't hold those caps, then we need to check whether
627 * the file is either opened or mmaped
629 if ((issued & (CEPH_CAP_FILE_CACHE|
630 CEPH_CAP_FILE_BUFFER)) ||
631 mapping_mapped(inode->i_mapping) ||
632 __ceph_caps_file_wanted(ci)) {
633 ci->i_truncate_pending++;
638 if (ceph_seq_cmp(truncate_seq, ci->i_truncate_seq) >= 0 &&
639 ci->i_truncate_size != truncate_size) {
640 dout("truncate_size %lld -> %llu\n", ci->i_truncate_size,
642 ci->i_truncate_size = truncate_size;
646 ceph_fscache_invalidate(inode);
651 void ceph_fill_file_time(struct inode *inode, int issued,
652 u64 time_warp_seq, struct timespec *ctime,
653 struct timespec *mtime, struct timespec *atime)
655 struct ceph_inode_info *ci = ceph_inode(inode);
658 if (issued & (CEPH_CAP_FILE_EXCL|
660 CEPH_CAP_FILE_BUFFER|
662 CEPH_CAP_XATTR_EXCL)) {
663 if (timespec_compare(ctime, &inode->i_ctime) > 0) {
664 dout("ctime %ld.%09ld -> %ld.%09ld inc w/ cap\n",
665 inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec,
666 ctime->tv_sec, ctime->tv_nsec);
667 inode->i_ctime = *ctime;
669 if (ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) > 0) {
670 /* the MDS did a utimes() */
671 dout("mtime %ld.%09ld -> %ld.%09ld "
673 inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec,
674 mtime->tv_sec, mtime->tv_nsec,
675 ci->i_time_warp_seq, (int)time_warp_seq);
677 inode->i_mtime = *mtime;
678 inode->i_atime = *atime;
679 ci->i_time_warp_seq = time_warp_seq;
680 } else if (time_warp_seq == ci->i_time_warp_seq) {
681 /* nobody did utimes(); take the max */
682 if (timespec_compare(mtime, &inode->i_mtime) > 0) {
683 dout("mtime %ld.%09ld -> %ld.%09ld inc\n",
684 inode->i_mtime.tv_sec,
685 inode->i_mtime.tv_nsec,
686 mtime->tv_sec, mtime->tv_nsec);
687 inode->i_mtime = *mtime;
689 if (timespec_compare(atime, &inode->i_atime) > 0) {
690 dout("atime %ld.%09ld -> %ld.%09ld inc\n",
691 inode->i_atime.tv_sec,
692 inode->i_atime.tv_nsec,
693 atime->tv_sec, atime->tv_nsec);
694 inode->i_atime = *atime;
696 } else if (issued & CEPH_CAP_FILE_EXCL) {
697 /* we did a utimes(); ignore mds values */
702 /* we have no write|excl caps; whatever the MDS says is true */
703 if (ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) >= 0) {
704 inode->i_ctime = *ctime;
705 inode->i_mtime = *mtime;
706 inode->i_atime = *atime;
707 ci->i_time_warp_seq = time_warp_seq;
712 if (warn) /* time_warp_seq shouldn't go backwards */
713 dout("%p mds time_warp_seq %llu < %u\n",
714 inode, time_warp_seq, ci->i_time_warp_seq);
718 * Populate an inode based on info from mds. May be called on new or
721 static int fill_inode(struct inode *inode, struct page *locked_page,
722 struct ceph_mds_reply_info_in *iinfo,
723 struct ceph_mds_reply_dirfrag *dirinfo,
724 struct ceph_mds_session *session,
725 unsigned long ttl_from, int cap_fmode,
726 struct ceph_cap_reservation *caps_reservation)
728 struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc;
729 struct ceph_mds_reply_inode *info = iinfo->in;
730 struct ceph_inode_info *ci = ceph_inode(inode);
731 int issued = 0, implemented, new_issued;
732 struct timespec mtime, atime, ctime;
733 struct ceph_buffer *xattr_blob = NULL;
734 struct ceph_string *pool_ns = NULL;
735 struct ceph_cap *new_cap = NULL;
738 bool queue_trunc = false;
739 bool new_version = false;
740 bool fill_inline = false;
742 dout("fill_inode %p ino %llx.%llx v %llu had %llu\n",
743 inode, ceph_vinop(inode), le64_to_cpu(info->version),
746 /* prealloc new cap struct */
747 if (info->cap.caps && ceph_snap(inode) == CEPH_NOSNAP)
748 new_cap = ceph_get_cap(mdsc, caps_reservation);
751 * prealloc xattr data, if it looks like we'll need it. only
752 * if len > 4 (meaning there are actually xattrs; the first 4
753 * bytes are the xattr count).
755 if (iinfo->xattr_len > 4) {
756 xattr_blob = ceph_buffer_new(iinfo->xattr_len, GFP_NOFS);
758 pr_err("fill_inode ENOMEM xattr blob %d bytes\n",
762 if (iinfo->pool_ns_len > 0)
763 pool_ns = ceph_find_or_create_string(iinfo->pool_ns_data,
766 spin_lock(&ci->i_ceph_lock);
769 * provided version will be odd if inode value is projected,
770 * even if stable. skip the update if we have newer stable
771 * info (ours>=theirs, e.g. due to racing mds replies), unless
772 * we are getting projected (unstable) info (in which case the
773 * version is odd, and we want ours>theirs).
779 if (ci->i_version == 0 ||
780 ((info->cap.flags & CEPH_CAP_FLAG_AUTH) &&
781 le64_to_cpu(info->version) > (ci->i_version & ~1)))
784 issued = __ceph_caps_issued(ci, &implemented);
785 issued |= implemented | __ceph_caps_dirty(ci);
786 new_issued = ~issued & le32_to_cpu(info->cap.caps);
789 ci->i_version = le64_to_cpu(info->version);
791 inode->i_rdev = le32_to_cpu(info->rdev);
792 inode->i_blkbits = fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1;
794 if ((new_version || (new_issued & CEPH_CAP_AUTH_SHARED)) &&
795 (issued & CEPH_CAP_AUTH_EXCL) == 0) {
796 inode->i_mode = le32_to_cpu(info->mode);
797 inode->i_uid = make_kuid(&init_user_ns, le32_to_cpu(info->uid));
798 inode->i_gid = make_kgid(&init_user_ns, le32_to_cpu(info->gid));
799 dout("%p mode 0%o uid.gid %d.%d\n", inode, inode->i_mode,
800 from_kuid(&init_user_ns, inode->i_uid),
801 from_kgid(&init_user_ns, inode->i_gid));
804 if ((new_version || (new_issued & CEPH_CAP_LINK_SHARED)) &&
805 (issued & CEPH_CAP_LINK_EXCL) == 0)
806 set_nlink(inode, le32_to_cpu(info->nlink));
808 if (new_version || (new_issued & CEPH_CAP_ANY_RD)) {
809 /* be careful with mtime, atime, size */
810 ceph_decode_timespec(&atime, &info->atime);
811 ceph_decode_timespec(&mtime, &info->mtime);
812 ceph_decode_timespec(&ctime, &info->ctime);
813 ceph_fill_file_time(inode, issued,
814 le32_to_cpu(info->time_warp_seq),
815 &ctime, &mtime, &atime);
819 (new_issued & (CEPH_CAP_ANY_FILE_RD | CEPH_CAP_ANY_FILE_WR))) {
820 s64 old_pool = ci->i_layout.pool_id;
821 struct ceph_string *old_ns;
823 ceph_file_layout_from_legacy(&ci->i_layout, &info->layout);
824 old_ns = rcu_dereference_protected(ci->i_layout.pool_ns,
825 lockdep_is_held(&ci->i_ceph_lock));
826 rcu_assign_pointer(ci->i_layout.pool_ns, pool_ns);
828 if (ci->i_layout.pool_id != old_pool || pool_ns != old_ns)
829 ci->i_ceph_flags &= ~CEPH_I_POOL_PERM;
833 queue_trunc = ceph_fill_file_size(inode, issued,
834 le32_to_cpu(info->truncate_seq),
835 le64_to_cpu(info->truncate_size),
836 le64_to_cpu(info->size));
837 /* only update max_size on auth cap */
838 if ((info->cap.flags & CEPH_CAP_FLAG_AUTH) &&
839 ci->i_max_size != le64_to_cpu(info->max_size)) {
840 dout("max_size %lld -> %llu\n", ci->i_max_size,
841 le64_to_cpu(info->max_size));
842 ci->i_max_size = le64_to_cpu(info->max_size);
847 /* note that if i_xattrs.len <= 4, i_xattrs.data will still be NULL. */
848 if ((ci->i_xattrs.version == 0 || !(issued & CEPH_CAP_XATTR_EXCL)) &&
849 le64_to_cpu(info->xattr_version) > ci->i_xattrs.version) {
850 if (ci->i_xattrs.blob)
851 ceph_buffer_put(ci->i_xattrs.blob);
852 ci->i_xattrs.blob = xattr_blob;
854 memcpy(ci->i_xattrs.blob->vec.iov_base,
855 iinfo->xattr_data, iinfo->xattr_len);
856 ci->i_xattrs.version = le64_to_cpu(info->xattr_version);
857 ceph_forget_all_cached_acls(inode);
861 inode->i_mapping->a_ops = &ceph_aops;
863 switch (inode->i_mode & S_IFMT) {
868 init_special_inode(inode, inode->i_mode, inode->i_rdev);
869 inode->i_op = &ceph_file_iops;
872 inode->i_op = &ceph_file_iops;
873 inode->i_fop = &ceph_file_fops;
876 inode->i_op = &ceph_symlink_iops;
877 if (!ci->i_symlink) {
878 u32 symlen = iinfo->symlink_len;
881 spin_unlock(&ci->i_ceph_lock);
883 if (symlen != i_size_read(inode)) {
884 pr_err("fill_inode %llx.%llx BAD symlink "
885 "size %lld\n", ceph_vinop(inode),
887 i_size_write(inode, symlen);
888 inode->i_blocks = calc_inode_blocks(symlen);
892 sym = kstrndup(iinfo->symlink, symlen, GFP_NOFS);
896 spin_lock(&ci->i_ceph_lock);
900 kfree(sym); /* lost a race */
902 inode->i_link = ci->i_symlink;
905 inode->i_op = &ceph_dir_iops;
906 inode->i_fop = &ceph_dir_fops;
908 ci->i_dir_layout = iinfo->dir_layout;
910 ci->i_files = le64_to_cpu(info->files);
911 ci->i_subdirs = le64_to_cpu(info->subdirs);
912 ci->i_rbytes = le64_to_cpu(info->rbytes);
913 ci->i_rfiles = le64_to_cpu(info->rfiles);
914 ci->i_rsubdirs = le64_to_cpu(info->rsubdirs);
915 ceph_decode_timespec(&ci->i_rctime, &info->rctime);
918 pr_err("fill_inode %llx.%llx BAD mode 0%o\n",
919 ceph_vinop(inode), inode->i_mode);
922 /* were we issued a capability? */
923 if (info->cap.caps) {
924 if (ceph_snap(inode) == CEPH_NOSNAP) {
925 unsigned caps = le32_to_cpu(info->cap.caps);
926 ceph_add_cap(inode, session,
927 le64_to_cpu(info->cap.cap_id),
929 le32_to_cpu(info->cap.wanted),
930 le32_to_cpu(info->cap.seq),
931 le32_to_cpu(info->cap.mseq),
932 le64_to_cpu(info->cap.realm),
933 info->cap.flags, &new_cap);
935 /* set dir completion flag? */
936 if (S_ISDIR(inode->i_mode) &&
937 ci->i_files == 0 && ci->i_subdirs == 0 &&
938 (caps & CEPH_CAP_FILE_SHARED) &&
939 (issued & CEPH_CAP_FILE_EXCL) == 0 &&
940 !__ceph_dir_is_complete(ci)) {
941 dout(" marking %p complete (empty)\n", inode);
942 i_size_write(inode, 0);
943 __ceph_dir_set_complete(ci,
944 atomic64_read(&ci->i_release_count),
945 atomic64_read(&ci->i_ordered_count));
950 dout(" %p got snap_caps %s\n", inode,
951 ceph_cap_string(le32_to_cpu(info->cap.caps)));
952 ci->i_snap_caps |= le32_to_cpu(info->cap.caps);
954 __ceph_get_fmode(ci, cap_fmode);
956 } else if (cap_fmode >= 0) {
957 pr_warn("mds issued no caps on %llx.%llx\n",
959 __ceph_get_fmode(ci, cap_fmode);
962 if (iinfo->inline_version > 0 &&
963 iinfo->inline_version >= ci->i_inline_version) {
964 int cache_caps = CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_LAZYIO;
965 ci->i_inline_version = iinfo->inline_version;
966 if (ci->i_inline_version != CEPH_INLINE_NONE &&
968 (le32_to_cpu(info->cap.caps) & cache_caps)))
972 spin_unlock(&ci->i_ceph_lock);
975 ceph_fill_inline_data(inode, locked_page,
976 iinfo->inline_data, iinfo->inline_len);
979 wake_up_all(&ci->i_cap_wq);
981 /* queue truncate if we saw i_size decrease */
983 ceph_queue_vmtruncate(inode);
985 /* populate frag tree */
986 if (S_ISDIR(inode->i_mode))
987 ceph_fill_fragtree(inode, &info->fragtree, dirinfo);
989 /* update delegation info? */
991 ceph_fill_dirfrag(inode, dirinfo);
996 ceph_put_cap(mdsc, new_cap);
998 ceph_buffer_put(xattr_blob);
999 ceph_put_string(pool_ns);
1004 * caller should hold session s_mutex.
1006 static void update_dentry_lease(struct dentry *dentry,
1007 struct ceph_mds_reply_lease *lease,
1008 struct ceph_mds_session *session,
1009 unsigned long from_time,
1010 struct ceph_vino *tgt_vino,
1011 struct ceph_vino *dir_vino)
1013 struct ceph_dentry_info *di = ceph_dentry(dentry);
1014 long unsigned duration = le32_to_cpu(lease->duration_ms);
1015 long unsigned ttl = from_time + (duration * HZ) / 1000;
1016 long unsigned half_ttl = from_time + (duration * HZ / 2) / 1000;
1018 struct ceph_mds_session *old_lease_session = NULL;
1021 * Make sure dentry's inode matches tgt_vino. NULL tgt_vino means that
1022 * we expect a negative dentry.
1024 if (!tgt_vino && d_really_is_positive(dentry))
1027 if (tgt_vino && (d_really_is_negative(dentry) ||
1028 !ceph_ino_compare(d_inode(dentry), tgt_vino)))
1031 spin_lock(&dentry->d_lock);
1032 dout("update_dentry_lease %p duration %lu ms ttl %lu\n",
1033 dentry, duration, ttl);
1035 dir = d_inode(dentry->d_parent);
1037 /* make sure parent matches dir_vino */
1038 if (!ceph_ino_compare(dir, dir_vino))
1041 /* only track leases on regular dentries */
1042 if (ceph_snap(dir) != CEPH_NOSNAP)
1045 di->lease_shared_gen = ceph_inode(dir)->i_shared_gen;
1050 if (di->lease_gen == session->s_cap_gen &&
1051 time_before(ttl, di->time))
1052 goto out_unlock; /* we already have a newer lease. */
1054 if (di->lease_session && di->lease_session != session) {
1055 old_lease_session = di->lease_session;
1056 di->lease_session = NULL;
1059 ceph_dentry_lru_touch(dentry);
1061 if (!di->lease_session)
1062 di->lease_session = ceph_get_mds_session(session);
1063 di->lease_gen = session->s_cap_gen;
1064 di->lease_seq = le32_to_cpu(lease->seq);
1065 di->lease_renew_after = half_ttl;
1066 di->lease_renew_from = 0;
1069 spin_unlock(&dentry->d_lock);
1070 if (old_lease_session)
1071 ceph_put_mds_session(old_lease_session);
1075 * splice a dentry to an inode.
1076 * caller must hold directory i_mutex for this to be safe.
1078 static struct dentry *splice_dentry(struct dentry *dn, struct inode *in)
1080 struct dentry *realdn;
1082 BUG_ON(d_inode(dn));
1084 /* dn must be unhashed */
1085 if (!d_unhashed(dn))
1087 realdn = d_splice_alias(in, dn);
1088 if (IS_ERR(realdn)) {
1089 pr_err("splice_dentry error %ld %p inode %p ino %llx.%llx\n",
1090 PTR_ERR(realdn), dn, in, ceph_vinop(in));
1091 dn = realdn; /* note realdn contains the error */
1093 } else if (realdn) {
1094 dout("dn %p (%d) spliced with %p (%d) "
1095 "inode %p ino %llx.%llx\n",
1097 realdn, d_count(realdn),
1098 d_inode(realdn), ceph_vinop(d_inode(realdn)));
1102 BUG_ON(!ceph_dentry(dn));
1103 dout("dn %p attached to %p ino %llx.%llx\n",
1104 dn, d_inode(dn), ceph_vinop(d_inode(dn)));
1111 * Incorporate results into the local cache. This is either just
1112 * one inode, or a directory, dentry, and possibly linked-to inode (e.g.,
1115 * A reply may contain
1116 * a directory inode along with a dentry.
1117 * and/or a target inode
1119 * Called with snap_rwsem (read).
1121 int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req)
1123 struct ceph_mds_session *session = req->r_session;
1124 struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info;
1125 struct inode *in = NULL;
1126 struct ceph_vino tvino, dvino;
1127 struct ceph_fs_client *fsc = ceph_sb_to_client(sb);
1130 dout("fill_trace %p is_dentry %d is_target %d\n", req,
1131 rinfo->head->is_dentry, rinfo->head->is_target);
1133 if (!rinfo->head->is_target && !rinfo->head->is_dentry) {
1134 dout("fill_trace reply is empty!\n");
1135 if (rinfo->head->result == 0 && req->r_parent)
1136 ceph_invalidate_dir_request(req);
1140 if (rinfo->head->is_dentry) {
1141 struct inode *dir = req->r_parent;
1144 err = fill_inode(dir, NULL,
1145 &rinfo->diri, rinfo->dirfrag,
1146 session, req->r_request_started, -1,
1147 &req->r_caps_reservation);
1154 if (dir && req->r_op == CEPH_MDS_OP_LOOKUPNAME) {
1156 struct dentry *dn, *parent;
1158 BUG_ON(!rinfo->head->is_target);
1159 BUG_ON(req->r_dentry);
1161 parent = d_find_any_alias(dir);
1164 dname.name = rinfo->dname;
1165 dname.len = rinfo->dname_len;
1166 dname.hash = full_name_hash(parent, dname.name, dname.len);
1167 tvino.ino = le64_to_cpu(rinfo->targeti.in->ino);
1168 tvino.snap = le64_to_cpu(rinfo->targeti.in->snapid);
1170 dn = d_lookup(parent, &dname);
1171 dout("d_lookup on parent=%p name=%.*s got %p\n",
1172 parent, dname.len, dname.name, dn);
1175 dn = d_alloc(parent, &dname);
1176 dout("d_alloc %p '%.*s' = %p\n", parent,
1177 dname.len, dname.name, dn);
1184 } else if (d_really_is_positive(dn) &&
1185 (ceph_ino(d_inode(dn)) != tvino.ino ||
1186 ceph_snap(d_inode(dn)) != tvino.snap)) {
1187 dout(" dn %p points to wrong inode %p\n",
1189 ceph_dir_clear_ordered(dir);
1200 if (rinfo->head->is_target) {
1201 tvino.ino = le64_to_cpu(rinfo->targeti.in->ino);
1202 tvino.snap = le64_to_cpu(rinfo->targeti.in->snapid);
1204 in = ceph_get_inode(sb, tvino);
1209 req->r_target_inode = in;
1211 err = fill_inode(in, req->r_locked_page, &rinfo->targeti, NULL,
1212 session, req->r_request_started,
1213 (!test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags) &&
1214 rinfo->head->result == 0) ? req->r_fmode : -1,
1215 &req->r_caps_reservation);
1217 pr_err("fill_inode badness %p %llx.%llx\n",
1218 in, ceph_vinop(in));
1224 * ignore null lease/binding on snapdir ENOENT, or else we
1225 * will have trouble splicing in the virtual snapdir later
1227 if (rinfo->head->is_dentry &&
1228 !test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags) &&
1229 test_bit(CEPH_MDS_R_PARENT_LOCKED, &req->r_req_flags) &&
1230 (rinfo->head->is_target || strncmp(req->r_dentry->d_name.name,
1231 fsc->mount_options->snapdir_name,
1232 req->r_dentry->d_name.len))) {
1234 * lookup link rename : null -> possibly existing inode
1235 * mknod symlink mkdir : null -> new inode
1236 * unlink : linked -> null
1238 struct inode *dir = req->r_parent;
1239 struct dentry *dn = req->r_dentry;
1240 bool have_dir_cap, have_lease;
1244 BUG_ON(d_inode(dn->d_parent) != dir);
1246 dvino.ino = le64_to_cpu(rinfo->diri.in->ino);
1247 dvino.snap = le64_to_cpu(rinfo->diri.in->snapid);
1249 BUG_ON(ceph_ino(dir) != dvino.ino);
1250 BUG_ON(ceph_snap(dir) != dvino.snap);
1252 /* do we have a lease on the whole dir? */
1254 (le32_to_cpu(rinfo->diri.in->cap.caps) &
1255 CEPH_CAP_FILE_SHARED);
1257 /* do we have a dn lease? */
1258 have_lease = have_dir_cap ||
1259 le32_to_cpu(rinfo->dlease->duration_ms);
1261 dout("fill_trace no dentry lease or dir cap\n");
1264 if (req->r_old_dentry && req->r_op == CEPH_MDS_OP_RENAME) {
1265 struct inode *olddir = req->r_old_dentry_dir;
1268 dout(" src %p '%pd' dst %p '%pd'\n",
1272 dout("fill_trace doing d_move %p -> %p\n",
1273 req->r_old_dentry, dn);
1275 /* d_move screws up sibling dentries' offsets */
1276 ceph_dir_clear_ordered(dir);
1277 ceph_dir_clear_ordered(olddir);
1279 d_move(req->r_old_dentry, dn);
1280 dout(" src %p '%pd' dst %p '%pd'\n",
1285 /* ensure target dentry is invalidated, despite
1286 rehashing bug in vfs_rename_dir */
1287 ceph_invalidate_dentry_lease(dn);
1289 dout("dn %p gets new offset %lld\n", req->r_old_dentry,
1290 ceph_dentry(req->r_old_dentry)->offset);
1292 dn = req->r_old_dentry; /* use old_dentry */
1296 if (!rinfo->head->is_target) {
1297 dout("fill_trace null dentry\n");
1298 if (d_really_is_positive(dn)) {
1299 ceph_dir_clear_ordered(dir);
1300 dout("d_delete %p\n", dn);
1302 } else if (have_lease) {
1305 update_dentry_lease(dn, rinfo->dlease,
1307 req->r_request_started,
1313 /* attach proper inode */
1314 if (d_really_is_negative(dn)) {
1315 ceph_dir_clear_ordered(dir);
1317 dn = splice_dentry(dn, in);
1322 req->r_dentry = dn; /* may have spliced */
1323 } else if (d_really_is_positive(dn) && d_inode(dn) != in) {
1324 dout(" %p links to %p %llx.%llx, not %llx.%llx\n",
1325 dn, d_inode(dn), ceph_vinop(d_inode(dn)),
1327 ceph_dir_clear_ordered(dir);
1333 tvino.ino = le64_to_cpu(rinfo->targeti.in->ino);
1334 tvino.snap = le64_to_cpu(rinfo->targeti.in->snapid);
1335 update_dentry_lease(dn, rinfo->dlease, session,
1336 req->r_request_started,
1339 dout(" final dn %p\n", dn);
1340 } else if ((req->r_op == CEPH_MDS_OP_LOOKUPSNAP ||
1341 req->r_op == CEPH_MDS_OP_MKSNAP) &&
1342 !test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags)) {
1343 struct dentry *dn = req->r_dentry;
1344 struct inode *dir = req->r_parent;
1346 /* fill out a snapdir LOOKUPSNAP dentry */
1349 BUG_ON(ceph_snap(dir) != CEPH_SNAPDIR);
1350 dout(" linking snapped dir %p to dn %p\n", in, dn);
1351 ceph_dir_clear_ordered(dir);
1353 dn = splice_dentry(dn, in);
1358 req->r_dentry = dn; /* may have spliced */
1359 } else if (rinfo->head->is_dentry) {
1360 struct ceph_vino *ptvino = NULL;
1362 if ((le32_to_cpu(rinfo->diri.in->cap.caps) & CEPH_CAP_FILE_SHARED) ||
1363 le32_to_cpu(rinfo->dlease->duration_ms)) {
1364 dvino.ino = le64_to_cpu(rinfo->diri.in->ino);
1365 dvino.snap = le64_to_cpu(rinfo->diri.in->snapid);
1367 if (rinfo->head->is_target) {
1368 tvino.ino = le64_to_cpu(rinfo->targeti.in->ino);
1369 tvino.snap = le64_to_cpu(rinfo->targeti.in->snapid);
1373 update_dentry_lease(req->r_dentry, rinfo->dlease,
1374 session, req->r_request_started, ptvino,
1377 dout("%s: no dentry lease or dir cap\n", __func__);
1381 dout("fill_trace done err=%d\n", err);
1386 * Prepopulate our cache with readdir results, leases, etc.
1388 static int readdir_prepopulate_inodes_only(struct ceph_mds_request *req,
1389 struct ceph_mds_session *session)
1391 struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info;
1394 for (i = 0; i < rinfo->dir_nr; i++) {
1395 struct ceph_mds_reply_dir_entry *rde = rinfo->dir_entries + i;
1396 struct ceph_vino vino;
1400 vino.ino = le64_to_cpu(rde->inode.in->ino);
1401 vino.snap = le64_to_cpu(rde->inode.in->snapid);
1403 in = ceph_get_inode(req->r_dentry->d_sb, vino);
1406 dout("new_inode badness got %d\n", err);
1409 rc = fill_inode(in, NULL, &rde->inode, NULL, session,
1410 req->r_request_started, -1,
1411 &req->r_caps_reservation);
1413 pr_err("fill_inode badness on %p got %d\n", in, rc);
1422 void ceph_readdir_cache_release(struct ceph_readdir_cache_control *ctl)
1426 put_page(ctl->page);
1431 static int fill_readdir_cache(struct inode *dir, struct dentry *dn,
1432 struct ceph_readdir_cache_control *ctl,
1433 struct ceph_mds_request *req)
1435 struct ceph_inode_info *ci = ceph_inode(dir);
1436 unsigned nsize = PAGE_SIZE / sizeof(struct dentry*);
1437 unsigned idx = ctl->index % nsize;
1438 pgoff_t pgoff = ctl->index / nsize;
1440 if (!ctl->page || pgoff != page_index(ctl->page)) {
1441 ceph_readdir_cache_release(ctl);
1443 ctl->page = grab_cache_page(&dir->i_data, pgoff);
1445 ctl->page = find_lock_page(&dir->i_data, pgoff);
1448 return idx == 0 ? -ENOMEM : 0;
1450 /* reading/filling the cache are serialized by
1451 * i_mutex, no need to use page lock */
1452 unlock_page(ctl->page);
1453 ctl->dentries = kmap(ctl->page);
1455 memset(ctl->dentries, 0, PAGE_SIZE);
1458 if (req->r_dir_release_cnt == atomic64_read(&ci->i_release_count) &&
1459 req->r_dir_ordered_cnt == atomic64_read(&ci->i_ordered_count)) {
1460 dout("readdir cache dn %p idx %d\n", dn, ctl->index);
1461 ctl->dentries[idx] = dn;
1464 dout("disable readdir cache\n");
1470 int ceph_readdir_prepopulate(struct ceph_mds_request *req,
1471 struct ceph_mds_session *session)
1473 struct dentry *parent = req->r_dentry;
1474 struct ceph_inode_info *ci = ceph_inode(d_inode(parent));
1475 struct ceph_mds_reply_info_parsed *rinfo = &req->r_reply_info;
1479 int err = 0, skipped = 0, ret, i;
1480 struct ceph_mds_request_head *rhead = req->r_request->front.iov_base;
1481 u32 frag = le32_to_cpu(rhead->args.readdir.frag);
1484 struct ceph_readdir_cache_control cache_ctl = {};
1486 if (test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags))
1487 return readdir_prepopulate_inodes_only(req, session);
1489 if (rinfo->hash_order) {
1491 last_hash = ceph_str_hash(ci->i_dir_layout.dl_dir_hash,
1493 strlen(req->r_path2));
1494 last_hash = ceph_frag_value(last_hash);
1495 } else if (rinfo->offset_hash) {
1496 /* mds understands offset_hash */
1497 WARN_ON_ONCE(req->r_readdir_offset != 2);
1498 last_hash = le32_to_cpu(rhead->args.readdir.offset_hash);
1502 if (rinfo->dir_dir &&
1503 le32_to_cpu(rinfo->dir_dir->frag) != frag) {
1504 dout("readdir_prepopulate got new frag %x -> %x\n",
1505 frag, le32_to_cpu(rinfo->dir_dir->frag));
1506 frag = le32_to_cpu(rinfo->dir_dir->frag);
1507 if (!rinfo->hash_order)
1508 req->r_readdir_offset = 2;
1511 if (le32_to_cpu(rinfo->head->op) == CEPH_MDS_OP_LSSNAP) {
1512 dout("readdir_prepopulate %d items under SNAPDIR dn %p\n",
1513 rinfo->dir_nr, parent);
1515 dout("readdir_prepopulate %d items under dn %p\n",
1516 rinfo->dir_nr, parent);
1518 ceph_fill_dirfrag(d_inode(parent), rinfo->dir_dir);
1520 if (ceph_frag_is_leftmost(frag) &&
1521 req->r_readdir_offset == 2 &&
1522 !(rinfo->hash_order && last_hash)) {
1523 /* note dir version at start of readdir so we can
1524 * tell if any dentries get dropped */
1525 req->r_dir_release_cnt =
1526 atomic64_read(&ci->i_release_count);
1527 req->r_dir_ordered_cnt =
1528 atomic64_read(&ci->i_ordered_count);
1529 req->r_readdir_cache_idx = 0;
1533 cache_ctl.index = req->r_readdir_cache_idx;
1534 fpos_offset = req->r_readdir_offset;
1536 /* FIXME: release caps/leases if error occurs */
1537 for (i = 0; i < rinfo->dir_nr; i++) {
1538 struct ceph_mds_reply_dir_entry *rde = rinfo->dir_entries + i;
1539 struct ceph_vino tvino, dvino;
1541 dname.name = rde->name;
1542 dname.len = rde->name_len;
1543 dname.hash = full_name_hash(parent, dname.name, dname.len);
1545 tvino.ino = le64_to_cpu(rde->inode.in->ino);
1546 tvino.snap = le64_to_cpu(rde->inode.in->snapid);
1548 if (rinfo->hash_order) {
1549 u32 hash = ceph_str_hash(ci->i_dir_layout.dl_dir_hash,
1550 rde->name, rde->name_len);
1551 hash = ceph_frag_value(hash);
1552 if (hash != last_hash)
1555 rde->offset = ceph_make_fpos(hash, fpos_offset++, true);
1557 rde->offset = ceph_make_fpos(frag, fpos_offset++, false);
1561 dn = d_lookup(parent, &dname);
1562 dout("d_lookup on parent=%p name=%.*s got %p\n",
1563 parent, dname.len, dname.name, dn);
1566 dn = d_alloc(parent, &dname);
1567 dout("d_alloc %p '%.*s' = %p\n", parent,
1568 dname.len, dname.name, dn);
1570 dout("d_alloc badness\n");
1574 } else if (d_really_is_positive(dn) &&
1575 (ceph_ino(d_inode(dn)) != tvino.ino ||
1576 ceph_snap(d_inode(dn)) != tvino.snap)) {
1577 dout(" dn %p points to wrong inode %p\n",
1579 __ceph_dir_clear_ordered(ci);
1586 if (d_really_is_positive(dn)) {
1589 in = ceph_get_inode(parent->d_sb, tvino);
1591 dout("new_inode badness\n");
1599 ret = fill_inode(in, NULL, &rde->inode, NULL, session,
1600 req->r_request_started, -1,
1601 &req->r_caps_reservation);
1603 pr_err("fill_inode badness on %p\n", in);
1604 if (d_really_is_positive(dn))
1605 __ceph_dir_clear_ordered(ci);
1613 if (d_really_is_negative(dn)) {
1614 struct dentry *realdn;
1616 if (ceph_security_xattr_deadlock(in)) {
1617 dout(" skip splicing dn %p to inode %p"
1618 " (security xattr deadlock)\n", dn, in);
1624 realdn = splice_dentry(dn, in);
1625 if (IS_ERR(realdn)) {
1626 err = PTR_ERR(realdn);
1634 ceph_dentry(dn)->offset = rde->offset;
1636 dvino = ceph_vino(d_inode(parent));
1637 update_dentry_lease(dn, rde->lease, req->r_session,
1638 req->r_request_started, &tvino, &dvino);
1640 if (err == 0 && skipped == 0 && cache_ctl.index >= 0) {
1641 ret = fill_readdir_cache(d_inode(parent), dn,
1651 if (err == 0 && skipped == 0) {
1652 set_bit(CEPH_MDS_R_DID_PREPOPULATE, &req->r_req_flags);
1653 req->r_readdir_cache_idx = cache_ctl.index;
1655 ceph_readdir_cache_release(&cache_ctl);
1656 dout("readdir_prepopulate done\n");
1660 bool ceph_inode_set_size(struct inode *inode, loff_t size)
1662 struct ceph_inode_info *ci = ceph_inode(inode);
1665 spin_lock(&ci->i_ceph_lock);
1666 dout("set_size %p %llu -> %llu\n", inode, inode->i_size, size);
1667 i_size_write(inode, size);
1668 inode->i_blocks = calc_inode_blocks(size);
1670 ret = __ceph_should_report_size(ci);
1672 spin_unlock(&ci->i_ceph_lock);
1677 * Write back inode data in a worker thread. (This can't be done
1678 * in the message handler context.)
1680 void ceph_queue_writeback(struct inode *inode)
1683 if (queue_work(ceph_inode_to_client(inode)->wb_wq,
1684 &ceph_inode(inode)->i_wb_work)) {
1685 dout("ceph_queue_writeback %p\n", inode);
1687 dout("ceph_queue_writeback %p failed\n", inode);
1692 static void ceph_writeback_work(struct work_struct *work)
1694 struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info,
1696 struct inode *inode = &ci->vfs_inode;
1698 dout("writeback %p\n", inode);
1699 filemap_fdatawrite(&inode->i_data);
1704 * queue an async invalidation
1706 void ceph_queue_invalidate(struct inode *inode)
1709 if (queue_work(ceph_inode_to_client(inode)->pg_inv_wq,
1710 &ceph_inode(inode)->i_pg_inv_work)) {
1711 dout("ceph_queue_invalidate %p\n", inode);
1713 dout("ceph_queue_invalidate %p failed\n", inode);
1719 * Invalidate inode pages in a worker thread. (This can't be done
1720 * in the message handler context.)
1722 static void ceph_invalidate_work(struct work_struct *work)
1724 struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info,
1726 struct inode *inode = &ci->vfs_inode;
1727 struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
1731 mutex_lock(&ci->i_truncate_mutex);
1733 if (READ_ONCE(fsc->mount_state) == CEPH_MOUNT_SHUTDOWN) {
1734 pr_warn_ratelimited("invalidate_pages %p %lld forced umount\n",
1735 inode, ceph_ino(inode));
1736 mapping_set_error(inode->i_mapping, -EIO);
1737 truncate_pagecache(inode, 0);
1738 mutex_unlock(&ci->i_truncate_mutex);
1742 spin_lock(&ci->i_ceph_lock);
1743 dout("invalidate_pages %p gen %d revoking %d\n", inode,
1744 ci->i_rdcache_gen, ci->i_rdcache_revoking);
1745 if (ci->i_rdcache_revoking != ci->i_rdcache_gen) {
1746 if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE))
1748 spin_unlock(&ci->i_ceph_lock);
1749 mutex_unlock(&ci->i_truncate_mutex);
1752 orig_gen = ci->i_rdcache_gen;
1753 spin_unlock(&ci->i_ceph_lock);
1755 if (invalidate_inode_pages2(inode->i_mapping) < 0) {
1756 pr_err("invalidate_pages %p fails\n", inode);
1759 spin_lock(&ci->i_ceph_lock);
1760 if (orig_gen == ci->i_rdcache_gen &&
1761 orig_gen == ci->i_rdcache_revoking) {
1762 dout("invalidate_pages %p gen %d successful\n", inode,
1764 ci->i_rdcache_revoking--;
1767 dout("invalidate_pages %p gen %d raced, now %d revoking %d\n",
1768 inode, orig_gen, ci->i_rdcache_gen,
1769 ci->i_rdcache_revoking);
1770 if (__ceph_caps_revoking_other(ci, NULL, CEPH_CAP_FILE_CACHE))
1773 spin_unlock(&ci->i_ceph_lock);
1774 mutex_unlock(&ci->i_truncate_mutex);
1777 ceph_check_caps(ci, 0, NULL);
1783 * called by trunc_wq;
1785 * We also truncate in a separate thread as well.
1787 static void ceph_vmtruncate_work(struct work_struct *work)
1789 struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info,
1791 struct inode *inode = &ci->vfs_inode;
1793 dout("vmtruncate_work %p\n", inode);
1794 __ceph_do_pending_vmtruncate(inode);
1799 * Queue an async vmtruncate. If we fail to queue work, we will handle
1800 * the truncation the next time we call __ceph_do_pending_vmtruncate.
1802 void ceph_queue_vmtruncate(struct inode *inode)
1804 struct ceph_inode_info *ci = ceph_inode(inode);
1808 if (queue_work(ceph_sb_to_client(inode->i_sb)->trunc_wq,
1809 &ci->i_vmtruncate_work)) {
1810 dout("ceph_queue_vmtruncate %p\n", inode);
1812 dout("ceph_queue_vmtruncate %p failed, pending=%d\n",
1813 inode, ci->i_truncate_pending);
1819 * Make sure any pending truncation is applied before doing anything
1820 * that may depend on it.
1822 void __ceph_do_pending_vmtruncate(struct inode *inode)
1824 struct ceph_inode_info *ci = ceph_inode(inode);
1826 int wrbuffer_refs, finish = 0;
1828 mutex_lock(&ci->i_truncate_mutex);
1830 spin_lock(&ci->i_ceph_lock);
1831 if (ci->i_truncate_pending == 0) {
1832 dout("__do_pending_vmtruncate %p none pending\n", inode);
1833 spin_unlock(&ci->i_ceph_lock);
1834 mutex_unlock(&ci->i_truncate_mutex);
1839 * make sure any dirty snapped pages are flushed before we
1840 * possibly truncate them.. so write AND block!
1842 if (ci->i_wrbuffer_ref_head < ci->i_wrbuffer_ref) {
1843 struct ceph_cap_snap *capsnap;
1844 to = ci->i_truncate_size;
1845 list_for_each_entry(capsnap, &ci->i_cap_snaps, ci_item) {
1846 // MDS should have revoked Frw caps
1847 WARN_ON_ONCE(capsnap->writing);
1848 if (capsnap->dirty_pages && capsnap->size > to)
1851 spin_unlock(&ci->i_ceph_lock);
1852 dout("__do_pending_vmtruncate %p flushing snaps first\n",
1855 truncate_pagecache(inode, to);
1857 filemap_write_and_wait_range(&inode->i_data, 0,
1858 inode->i_sb->s_maxbytes);
1862 /* there should be no reader or writer */
1863 WARN_ON_ONCE(ci->i_rd_ref || ci->i_wr_ref);
1865 to = ci->i_truncate_size;
1866 wrbuffer_refs = ci->i_wrbuffer_ref;
1867 dout("__do_pending_vmtruncate %p (%d) to %lld\n", inode,
1868 ci->i_truncate_pending, to);
1869 spin_unlock(&ci->i_ceph_lock);
1871 truncate_pagecache(inode, to);
1873 spin_lock(&ci->i_ceph_lock);
1874 if (to == ci->i_truncate_size) {
1875 ci->i_truncate_pending = 0;
1878 spin_unlock(&ci->i_ceph_lock);
1882 mutex_unlock(&ci->i_truncate_mutex);
1884 if (wrbuffer_refs == 0)
1885 ceph_check_caps(ci, CHECK_CAPS_AUTHONLY, NULL);
1887 wake_up_all(&ci->i_cap_wq);
1893 static const struct inode_operations ceph_symlink_iops = {
1894 .get_link = simple_get_link,
1895 .setattr = ceph_setattr,
1896 .getattr = ceph_getattr,
1897 .listxattr = ceph_listxattr,
1900 int __ceph_setattr(struct inode *inode, struct iattr *attr)
1902 struct ceph_inode_info *ci = ceph_inode(inode);
1903 const unsigned int ia_valid = attr->ia_valid;
1904 struct ceph_mds_request *req;
1905 struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc;
1906 struct ceph_cap_flush *prealloc_cf;
1908 int release = 0, dirtied = 0;
1911 int inode_dirty_flags = 0;
1912 bool lock_snap_rwsem = false;
1914 prealloc_cf = ceph_alloc_cap_flush();
1918 req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETATTR,
1921 ceph_free_cap_flush(prealloc_cf);
1922 return PTR_ERR(req);
1925 spin_lock(&ci->i_ceph_lock);
1926 issued = __ceph_caps_issued(ci, NULL);
1928 if (!ci->i_head_snapc &&
1929 (issued & (CEPH_CAP_ANY_EXCL | CEPH_CAP_FILE_WR))) {
1930 lock_snap_rwsem = true;
1931 if (!down_read_trylock(&mdsc->snap_rwsem)) {
1932 spin_unlock(&ci->i_ceph_lock);
1933 down_read(&mdsc->snap_rwsem);
1934 spin_lock(&ci->i_ceph_lock);
1935 issued = __ceph_caps_issued(ci, NULL);
1939 dout("setattr %p issued %s\n", inode, ceph_cap_string(issued));
1941 if (ia_valid & ATTR_UID) {
1942 dout("setattr %p uid %d -> %d\n", inode,
1943 from_kuid(&init_user_ns, inode->i_uid),
1944 from_kuid(&init_user_ns, attr->ia_uid));
1945 if (issued & CEPH_CAP_AUTH_EXCL) {
1946 inode->i_uid = attr->ia_uid;
1947 dirtied |= CEPH_CAP_AUTH_EXCL;
1948 } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 ||
1949 !uid_eq(attr->ia_uid, inode->i_uid)) {
1950 req->r_args.setattr.uid = cpu_to_le32(
1951 from_kuid(&init_user_ns, attr->ia_uid));
1952 mask |= CEPH_SETATTR_UID;
1953 release |= CEPH_CAP_AUTH_SHARED;
1956 if (ia_valid & ATTR_GID) {
1957 dout("setattr %p gid %d -> %d\n", inode,
1958 from_kgid(&init_user_ns, inode->i_gid),
1959 from_kgid(&init_user_ns, attr->ia_gid));
1960 if (issued & CEPH_CAP_AUTH_EXCL) {
1961 inode->i_gid = attr->ia_gid;
1962 dirtied |= CEPH_CAP_AUTH_EXCL;
1963 } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 ||
1964 !gid_eq(attr->ia_gid, inode->i_gid)) {
1965 req->r_args.setattr.gid = cpu_to_le32(
1966 from_kgid(&init_user_ns, attr->ia_gid));
1967 mask |= CEPH_SETATTR_GID;
1968 release |= CEPH_CAP_AUTH_SHARED;
1971 if (ia_valid & ATTR_MODE) {
1972 dout("setattr %p mode 0%o -> 0%o\n", inode, inode->i_mode,
1974 if (issued & CEPH_CAP_AUTH_EXCL) {
1975 inode->i_mode = attr->ia_mode;
1976 dirtied |= CEPH_CAP_AUTH_EXCL;
1977 } else if ((issued & CEPH_CAP_AUTH_SHARED) == 0 ||
1978 attr->ia_mode != inode->i_mode) {
1979 inode->i_mode = attr->ia_mode;
1980 req->r_args.setattr.mode = cpu_to_le32(attr->ia_mode);
1981 mask |= CEPH_SETATTR_MODE;
1982 release |= CEPH_CAP_AUTH_SHARED;
1986 if (ia_valid & ATTR_ATIME) {
1987 dout("setattr %p atime %ld.%ld -> %ld.%ld\n", inode,
1988 inode->i_atime.tv_sec, inode->i_atime.tv_nsec,
1989 attr->ia_atime.tv_sec, attr->ia_atime.tv_nsec);
1990 if (issued & CEPH_CAP_FILE_EXCL) {
1991 ci->i_time_warp_seq++;
1992 inode->i_atime = attr->ia_atime;
1993 dirtied |= CEPH_CAP_FILE_EXCL;
1994 } else if ((issued & CEPH_CAP_FILE_WR) &&
1995 timespec_compare(&inode->i_atime,
1996 &attr->ia_atime) < 0) {
1997 inode->i_atime = attr->ia_atime;
1998 dirtied |= CEPH_CAP_FILE_WR;
1999 } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 ||
2000 !timespec_equal(&inode->i_atime, &attr->ia_atime)) {
2001 ceph_encode_timespec(&req->r_args.setattr.atime,
2003 mask |= CEPH_SETATTR_ATIME;
2004 release |= CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_RD |
2008 if (ia_valid & ATTR_MTIME) {
2009 dout("setattr %p mtime %ld.%ld -> %ld.%ld\n", inode,
2010 inode->i_mtime.tv_sec, inode->i_mtime.tv_nsec,
2011 attr->ia_mtime.tv_sec, attr->ia_mtime.tv_nsec);
2012 if (issued & CEPH_CAP_FILE_EXCL) {
2013 ci->i_time_warp_seq++;
2014 inode->i_mtime = attr->ia_mtime;
2015 dirtied |= CEPH_CAP_FILE_EXCL;
2016 } else if ((issued & CEPH_CAP_FILE_WR) &&
2017 timespec_compare(&inode->i_mtime,
2018 &attr->ia_mtime) < 0) {
2019 inode->i_mtime = attr->ia_mtime;
2020 dirtied |= CEPH_CAP_FILE_WR;
2021 } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 ||
2022 !timespec_equal(&inode->i_mtime, &attr->ia_mtime)) {
2023 ceph_encode_timespec(&req->r_args.setattr.mtime,
2025 mask |= CEPH_SETATTR_MTIME;
2026 release |= CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_RD |
2030 if (ia_valid & ATTR_SIZE) {
2031 dout("setattr %p size %lld -> %lld\n", inode,
2032 inode->i_size, attr->ia_size);
2033 if ((issued & CEPH_CAP_FILE_EXCL) &&
2034 attr->ia_size > inode->i_size) {
2035 i_size_write(inode, attr->ia_size);
2036 inode->i_blocks = calc_inode_blocks(attr->ia_size);
2037 ci->i_reported_size = attr->ia_size;
2038 dirtied |= CEPH_CAP_FILE_EXCL;
2039 } else if ((issued & CEPH_CAP_FILE_SHARED) == 0 ||
2040 attr->ia_size != inode->i_size) {
2041 req->r_args.setattr.size = cpu_to_le64(attr->ia_size);
2042 req->r_args.setattr.old_size =
2043 cpu_to_le64(inode->i_size);
2044 mask |= CEPH_SETATTR_SIZE;
2045 release |= CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_RD |
2050 /* these do nothing */
2051 if (ia_valid & ATTR_CTIME) {
2052 bool only = (ia_valid & (ATTR_SIZE|ATTR_MTIME|ATTR_ATIME|
2053 ATTR_MODE|ATTR_UID|ATTR_GID)) == 0;
2054 dout("setattr %p ctime %ld.%ld -> %ld.%ld (%s)\n", inode,
2055 inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec,
2056 attr->ia_ctime.tv_sec, attr->ia_ctime.tv_nsec,
2057 only ? "ctime only" : "ignored");
2060 * if kernel wants to dirty ctime but nothing else,
2061 * we need to choose a cap to dirty under, or do
2062 * a almost-no-op setattr
2064 if (issued & CEPH_CAP_AUTH_EXCL)
2065 dirtied |= CEPH_CAP_AUTH_EXCL;
2066 else if (issued & CEPH_CAP_FILE_EXCL)
2067 dirtied |= CEPH_CAP_FILE_EXCL;
2068 else if (issued & CEPH_CAP_XATTR_EXCL)
2069 dirtied |= CEPH_CAP_XATTR_EXCL;
2071 mask |= CEPH_SETATTR_CTIME;
2074 if (ia_valid & ATTR_FILE)
2075 dout("setattr %p ATTR_FILE ... hrm!\n", inode);
2078 inode_dirty_flags = __ceph_mark_dirty_caps(ci, dirtied,
2080 inode->i_ctime = attr->ia_ctime;
2084 spin_unlock(&ci->i_ceph_lock);
2085 if (lock_snap_rwsem)
2086 up_read(&mdsc->snap_rwsem);
2088 if (inode_dirty_flags)
2089 __mark_inode_dirty(inode, inode_dirty_flags);
2093 req->r_inode = inode;
2095 req->r_inode_drop = release;
2096 req->r_args.setattr.mask = cpu_to_le32(mask);
2097 req->r_num_caps = 1;
2098 req->r_stamp = attr->ia_ctime;
2099 err = ceph_mdsc_do_request(mdsc, NULL, req);
2101 dout("setattr %p result=%d (%s locally, %d remote)\n", inode, err,
2102 ceph_cap_string(dirtied), mask);
2104 ceph_mdsc_put_request(req);
2105 ceph_free_cap_flush(prealloc_cf);
2107 if (err >= 0 && (mask & CEPH_SETATTR_SIZE))
2108 __ceph_do_pending_vmtruncate(inode);
2116 int ceph_setattr(struct dentry *dentry, struct iattr *attr)
2118 struct inode *inode = d_inode(dentry);
2121 if (ceph_snap(inode) != CEPH_NOSNAP)
2124 err = setattr_prepare(dentry, attr);
2128 err = __ceph_setattr(inode, attr);
2130 if (err >= 0 && (attr->ia_valid & ATTR_MODE))
2131 err = posix_acl_chmod(inode, attr->ia_mode);
2137 * Verify that we have a lease on the given mask. If not,
2138 * do a getattr against an mds.
2140 int __ceph_do_getattr(struct inode *inode, struct page *locked_page,
2141 int mask, bool force)
2143 struct ceph_fs_client *fsc = ceph_sb_to_client(inode->i_sb);
2144 struct ceph_mds_client *mdsc = fsc->mdsc;
2145 struct ceph_mds_request *req;
2148 if (ceph_snap(inode) == CEPH_SNAPDIR) {
2149 dout("do_getattr inode %p SNAPDIR\n", inode);
2153 dout("do_getattr inode %p mask %s mode 0%o\n",
2154 inode, ceph_cap_string(mask), inode->i_mode);
2155 if (!force && ceph_caps_issued_mask(ceph_inode(inode), mask, 1))
2158 req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_GETATTR, USE_ANY_MDS);
2160 return PTR_ERR(req);
2161 req->r_inode = inode;
2163 req->r_num_caps = 1;
2164 req->r_args.getattr.mask = cpu_to_le32(mask);
2165 req->r_locked_page = locked_page;
2166 err = ceph_mdsc_do_request(mdsc, NULL, req);
2167 if (locked_page && err == 0) {
2168 u64 inline_version = req->r_reply_info.targeti.inline_version;
2169 if (inline_version == 0) {
2170 /* the reply is supposed to contain inline data */
2172 } else if (inline_version == CEPH_INLINE_NONE) {
2175 err = req->r_reply_info.targeti.inline_len;
2178 ceph_mdsc_put_request(req);
2179 dout("do_getattr result=%d\n", err);
2185 * Check inode permissions. We verify we have a valid value for
2186 * the AUTH cap, then call the generic handler.
2188 int ceph_permission(struct inode *inode, int mask)
2192 if (mask & MAY_NOT_BLOCK)
2195 err = ceph_do_getattr(inode, CEPH_CAP_AUTH_SHARED, false);
2198 err = generic_permission(inode, mask);
2203 * Get all attributes. Hopefully somedata we'll have a statlite()
2204 * and can limit the fields we require to be accurate.
2206 int ceph_getattr(const struct path *path, struct kstat *stat,
2207 u32 request_mask, unsigned int flags)
2209 struct inode *inode = d_inode(path->dentry);
2210 struct ceph_inode_info *ci = ceph_inode(inode);
2213 err = ceph_do_getattr(inode, CEPH_STAT_CAP_INODE_ALL, false);
2215 generic_fillattr(inode, stat);
2216 stat->ino = ceph_translate_ino(inode->i_sb, inode->i_ino);
2217 if (ceph_snap(inode) != CEPH_NOSNAP)
2218 stat->dev = ceph_snap(inode);
2221 if (S_ISDIR(inode->i_mode)) {
2222 if (ceph_test_mount_opt(ceph_sb_to_client(inode->i_sb),
2224 stat->size = ci->i_rbytes;
2226 stat->size = ci->i_files + ci->i_subdirs;
2228 stat->blksize = 65536;