1 #include <linux/ceph/ceph_debug.h>
3 #include <linux/module.h>
5 #include <linux/slab.h>
6 #include <linux/string.h>
7 #include <linux/uaccess.h>
8 #include <linux/kernel.h>
9 #include <linux/writeback.h>
10 #include <linux/vmalloc.h>
11 #include <linux/posix_acl.h>
12 #include <linux/random.h>
15 #include "mds_client.h"
17 #include <linux/ceph/decode.h>
20 * Ceph inode operations
22 * Implement basic inode helpers (get, alloc) and inode ops (getattr,
23 * setattr, etc.), xattr helpers, and helpers for assimilating
24 * metadata returned by the MDS into our cache.
26 * Also define helpers for doing asynchronous writeback, invalidation,
27 * and truncation for the benefit of those who can't afford to block
28 * (typically because they are in the message handler path).
31 static const struct inode_operations ceph_symlink_iops
;
33 static void ceph_invalidate_work(struct work_struct
*work
);
34 static void ceph_writeback_work(struct work_struct
*work
);
35 static void ceph_vmtruncate_work(struct work_struct
*work
);
38 * find or create an inode, given the ceph ino number
40 static int ceph_set_ino_cb(struct inode
*inode
, void *data
)
42 ceph_inode(inode
)->i_vino
= *(struct ceph_vino
*)data
;
43 inode
->i_ino
= ceph_vino_to_ino(*(struct ceph_vino
*)data
);
47 struct inode
*ceph_get_inode(struct super_block
*sb
, struct ceph_vino vino
)
50 ino_t t
= ceph_vino_to_ino(vino
);
52 inode
= iget5_locked(sb
, t
, ceph_ino_compare
, ceph_set_ino_cb
, &vino
);
54 return ERR_PTR(-ENOMEM
);
55 if (inode
->i_state
& I_NEW
) {
56 dout("get_inode created new inode %p %llx.%llx ino %llx\n",
57 inode
, ceph_vinop(inode
), (u64
)inode
->i_ino
);
58 unlock_new_inode(inode
);
61 dout("get_inode on %lu=%llx.%llx got %p\n", inode
->i_ino
, vino
.ino
,
67 * get/constuct snapdir inode for a given directory
69 struct inode
*ceph_get_snapdir(struct inode
*parent
)
71 struct ceph_vino vino
= {
72 .ino
= ceph_ino(parent
),
75 struct inode
*inode
= ceph_get_inode(parent
->i_sb
, vino
);
76 struct ceph_inode_info
*ci
= ceph_inode(inode
);
78 BUG_ON(!S_ISDIR(parent
->i_mode
));
81 inode
->i_mode
= parent
->i_mode
;
82 inode
->i_uid
= parent
->i_uid
;
83 inode
->i_gid
= parent
->i_gid
;
84 inode
->i_op
= &ceph_snapdir_iops
;
85 inode
->i_fop
= &ceph_snapdir_fops
;
86 ci
->i_snap_caps
= CEPH_CAP_PIN
; /* so we can open */
91 const struct inode_operations ceph_file_iops
= {
92 .permission
= ceph_permission
,
93 .setattr
= ceph_setattr
,
94 .getattr
= ceph_getattr
,
95 .setxattr
= ceph_setxattr
,
96 .getxattr
= ceph_getxattr
,
97 .listxattr
= ceph_listxattr
,
98 .removexattr
= ceph_removexattr
,
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 pr_err("__get_or_create_frag ENOMEM on %p %llx.%llx "
139 "frag %x\n", &ci
->vfs_inode
,
140 ceph_vinop(&ci
->vfs_inode
), f
);
141 return ERR_PTR(-ENOMEM
);
148 rb_link_node(&frag
->node
, parent
, p
);
149 rb_insert_color(&frag
->node
, &ci
->i_fragtree
);
151 dout("get_or_create_frag added %llx.%llx frag %x\n",
152 ceph_vinop(&ci
->vfs_inode
), f
);
157 * find a specific frag @f
159 struct ceph_inode_frag
*__ceph_find_frag(struct ceph_inode_info
*ci
, u32 f
)
161 struct rb_node
*n
= ci
->i_fragtree
.rb_node
;
164 struct ceph_inode_frag
*frag
=
165 rb_entry(n
, struct ceph_inode_frag
, node
);
166 int c
= ceph_frag_compare(f
, frag
->frag
);
178 * Choose frag containing the given value @v. If @pfrag is
179 * specified, copy the frag delegation info to the caller if
182 static u32
__ceph_choose_frag(struct ceph_inode_info
*ci
, u32 v
,
183 struct ceph_inode_frag
*pfrag
, int *found
)
185 u32 t
= ceph_frag_make(0, 0);
186 struct ceph_inode_frag
*frag
;
194 WARN_ON(!ceph_frag_contains_value(t
, v
));
195 frag
= __ceph_find_frag(ci
, t
);
197 break; /* t is a leaf */
198 if (frag
->split_by
== 0) {
200 memcpy(pfrag
, frag
, sizeof(*pfrag
));
207 nway
= 1 << frag
->split_by
;
208 dout("choose_frag(%x) %x splits by %d (%d ways)\n", v
, t
,
209 frag
->split_by
, nway
);
210 for (i
= 0; i
< nway
; i
++) {
211 n
= ceph_frag_make_child(t
, frag
->split_by
, i
);
212 if (ceph_frag_contains_value(n
, v
)) {
219 dout("choose_frag(%x) = %x\n", v
, t
);
224 u32
ceph_choose_frag(struct ceph_inode_info
*ci
, u32 v
,
225 struct ceph_inode_frag
*pfrag
, int *found
)
228 mutex_lock(&ci
->i_fragtree_mutex
);
229 ret
= __ceph_choose_frag(ci
, v
, pfrag
, found
);
230 mutex_unlock(&ci
->i_fragtree_mutex
);
235 * Process dirfrag (delegation) info from the mds. Include leaf
236 * fragment in tree ONLY if ndist > 0. Otherwise, only
237 * branches/splits are included in i_fragtree)
239 static int ceph_fill_dirfrag(struct inode
*inode
,
240 struct ceph_mds_reply_dirfrag
*dirinfo
)
242 struct ceph_inode_info
*ci
= ceph_inode(inode
);
243 struct ceph_inode_frag
*frag
;
244 u32 id
= le32_to_cpu(dirinfo
->frag
);
245 int mds
= le32_to_cpu(dirinfo
->auth
);
246 int ndist
= le32_to_cpu(dirinfo
->ndist
);
251 spin_lock(&ci
->i_ceph_lock
);
253 diri_auth
= ci
->i_auth_cap
->mds
;
254 spin_unlock(&ci
->i_ceph_lock
);
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 ceph_fill_fragtree(struct inode
*inode
,
303 struct ceph_frag_tree_head
*fragtree
,
304 struct ceph_mds_reply_dirfrag
*dirinfo
)
306 struct ceph_inode_info
*ci
= ceph_inode(inode
);
307 struct ceph_inode_frag
*frag
;
308 struct rb_node
*rb_node
;
313 mutex_lock(&ci
->i_fragtree_mutex
);
314 nsplits
= le32_to_cpu(fragtree
->nsplits
);
316 i
= prandom_u32() % nsplits
;
317 id
= le32_to_cpu(fragtree
->splits
[i
].frag
);
318 if (!__ceph_find_frag(ci
, id
))
320 } else if (!RB_EMPTY_ROOT(&ci
->i_fragtree
)) {
321 rb_node
= rb_first(&ci
->i_fragtree
);
322 frag
= rb_entry(rb_node
, struct ceph_inode_frag
, node
);
323 if (frag
->frag
!= ceph_frag_make(0, 0) || rb_next(rb_node
))
326 if (!update
&& dirinfo
) {
327 id
= le32_to_cpu(dirinfo
->frag
);
328 if (id
!= __ceph_choose_frag(ci
, id
, NULL
, NULL
))
334 dout("fill_fragtree %llx.%llx\n", ceph_vinop(inode
));
335 rb_node
= rb_first(&ci
->i_fragtree
);
336 for (i
= 0; i
< nsplits
; i
++) {
337 id
= le32_to_cpu(fragtree
->splits
[i
].frag
);
340 frag
= rb_entry(rb_node
, struct ceph_inode_frag
, node
);
341 if (ceph_frag_compare(frag
->frag
, id
) >= 0) {
342 if (frag
->frag
!= id
)
345 rb_node
= rb_next(rb_node
);
348 rb_node
= rb_next(rb_node
);
349 rb_erase(&frag
->node
, &ci
->i_fragtree
);
354 frag
= __get_or_create_frag(ci
, id
);
358 frag
->split_by
= le32_to_cpu(fragtree
->splits
[i
].by
);
359 dout(" frag %x split by %d\n", frag
->frag
, frag
->split_by
);
362 frag
= rb_entry(rb_node
, struct ceph_inode_frag
, node
);
363 rb_node
= rb_next(rb_node
);
364 rb_erase(&frag
->node
, &ci
->i_fragtree
);
368 mutex_unlock(&ci
->i_fragtree_mutex
);
373 * initialize a newly allocated inode.
375 struct inode
*ceph_alloc_inode(struct super_block
*sb
)
377 struct ceph_inode_info
*ci
;
380 ci
= kmem_cache_alloc(ceph_inode_cachep
, GFP_NOFS
);
384 dout("alloc_inode %p\n", &ci
->vfs_inode
);
386 spin_lock_init(&ci
->i_ceph_lock
);
389 ci
->i_inline_version
= 0;
390 ci
->i_time_warp_seq
= 0;
391 ci
->i_ceph_flags
= 0;
392 atomic64_set(&ci
->i_ordered_count
, 1);
393 atomic64_set(&ci
->i_release_count
, 1);
394 atomic64_set(&ci
->i_complete_seq
[0], 0);
395 atomic64_set(&ci
->i_complete_seq
[1], 0);
396 ci
->i_symlink
= NULL
;
398 memset(&ci
->i_dir_layout
, 0, sizeof(ci
->i_dir_layout
));
399 ci
->i_pool_ns_len
= 0;
401 ci
->i_fragtree
= RB_ROOT
;
402 mutex_init(&ci
->i_fragtree_mutex
);
404 ci
->i_xattrs
.blob
= NULL
;
405 ci
->i_xattrs
.prealloc_blob
= NULL
;
406 ci
->i_xattrs
.dirty
= false;
407 ci
->i_xattrs
.index
= RB_ROOT
;
408 ci
->i_xattrs
.count
= 0;
409 ci
->i_xattrs
.names_size
= 0;
410 ci
->i_xattrs
.vals_size
= 0;
411 ci
->i_xattrs
.version
= 0;
412 ci
->i_xattrs
.index_version
= 0;
414 ci
->i_caps
= RB_ROOT
;
415 ci
->i_auth_cap
= NULL
;
416 ci
->i_dirty_caps
= 0;
417 ci
->i_flushing_caps
= 0;
418 INIT_LIST_HEAD(&ci
->i_dirty_item
);
419 INIT_LIST_HEAD(&ci
->i_flushing_item
);
420 ci
->i_prealloc_cap_flush
= NULL
;
421 ci
->i_cap_flush_tree
= RB_ROOT
;
422 init_waitqueue_head(&ci
->i_cap_wq
);
423 ci
->i_hold_caps_min
= 0;
424 ci
->i_hold_caps_max
= 0;
425 INIT_LIST_HEAD(&ci
->i_cap_delay_list
);
426 INIT_LIST_HEAD(&ci
->i_cap_snaps
);
427 ci
->i_head_snapc
= NULL
;
430 for (i
= 0; i
< CEPH_FILE_MODE_NUM
; i
++)
431 ci
->i_nr_by_mode
[i
] = 0;
433 mutex_init(&ci
->i_truncate_mutex
);
434 ci
->i_truncate_seq
= 0;
435 ci
->i_truncate_size
= 0;
436 ci
->i_truncate_pending
= 0;
439 ci
->i_reported_size
= 0;
440 ci
->i_wanted_max_size
= 0;
441 ci
->i_requested_max_size
= 0;
445 ci
->i_rdcache_ref
= 0;
448 ci
->i_wrbuffer_ref
= 0;
449 ci
->i_wrbuffer_ref_head
= 0;
450 ci
->i_shared_gen
= 0;
451 ci
->i_rdcache_gen
= 0;
452 ci
->i_rdcache_revoking
= 0;
454 INIT_LIST_HEAD(&ci
->i_unsafe_writes
);
455 INIT_LIST_HEAD(&ci
->i_unsafe_dirops
);
456 INIT_LIST_HEAD(&ci
->i_unsafe_iops
);
457 spin_lock_init(&ci
->i_unsafe_lock
);
459 ci
->i_snap_realm
= NULL
;
460 INIT_LIST_HEAD(&ci
->i_snap_realm_item
);
461 INIT_LIST_HEAD(&ci
->i_snap_flush_item
);
463 INIT_WORK(&ci
->i_wb_work
, ceph_writeback_work
);
464 INIT_WORK(&ci
->i_pg_inv_work
, ceph_invalidate_work
);
466 INIT_WORK(&ci
->i_vmtruncate_work
, ceph_vmtruncate_work
);
468 ceph_fscache_inode_init(ci
);
470 return &ci
->vfs_inode
;
473 static void ceph_i_callback(struct rcu_head
*head
)
475 struct inode
*inode
= container_of(head
, struct inode
, i_rcu
);
476 struct ceph_inode_info
*ci
= ceph_inode(inode
);
478 kmem_cache_free(ceph_inode_cachep
, ci
);
481 void ceph_destroy_inode(struct inode
*inode
)
483 struct ceph_inode_info
*ci
= ceph_inode(inode
);
484 struct ceph_inode_frag
*frag
;
487 dout("destroy_inode %p ino %llx.%llx\n", inode
, ceph_vinop(inode
));
489 ceph_fscache_unregister_inode_cookie(ci
);
491 ceph_queue_caps_release(inode
);
494 * we may still have a snap_realm reference if there are stray
495 * caps in i_snap_caps.
497 if (ci
->i_snap_realm
) {
498 struct ceph_mds_client
*mdsc
=
499 ceph_sb_to_client(ci
->vfs_inode
.i_sb
)->mdsc
;
500 struct ceph_snap_realm
*realm
= ci
->i_snap_realm
;
502 dout(" dropping residual ref to snap realm %p\n", realm
);
503 spin_lock(&realm
->inodes_with_caps_lock
);
504 list_del_init(&ci
->i_snap_realm_item
);
505 spin_unlock(&realm
->inodes_with_caps_lock
);
506 ceph_put_snap_realm(mdsc
, realm
);
509 kfree(ci
->i_symlink
);
510 while ((n
= rb_first(&ci
->i_fragtree
)) != NULL
) {
511 frag
= rb_entry(n
, struct ceph_inode_frag
, node
);
512 rb_erase(n
, &ci
->i_fragtree
);
516 __ceph_destroy_xattrs(ci
);
517 if (ci
->i_xattrs
.blob
)
518 ceph_buffer_put(ci
->i_xattrs
.blob
);
519 if (ci
->i_xattrs
.prealloc_blob
)
520 ceph_buffer_put(ci
->i_xattrs
.prealloc_blob
);
522 call_rcu(&inode
->i_rcu
, ceph_i_callback
);
525 int ceph_drop_inode(struct inode
*inode
)
528 * Positve dentry and corresponding inode are always accompanied
529 * in MDS reply. So no need to keep inode in the cache after
530 * dropping all its aliases.
536 * Helpers to fill in size, ctime, mtime, and atime. We have to be
537 * careful because either the client or MDS may have more up to date
538 * info, depending on which capabilities are held, and whether
539 * time_warp_seq or truncate_seq have increased. (Ordinarily, mtime
540 * and size are monotonically increasing, except when utimes() or
541 * truncate() increments the corresponding _seq values.)
543 int ceph_fill_file_size(struct inode
*inode
, int issued
,
544 u32 truncate_seq
, u64 truncate_size
, u64 size
)
546 struct ceph_inode_info
*ci
= ceph_inode(inode
);
549 if (ceph_seq_cmp(truncate_seq
, ci
->i_truncate_seq
) > 0 ||
550 (truncate_seq
== ci
->i_truncate_seq
&& size
> inode
->i_size
)) {
551 dout("size %lld -> %llu\n", inode
->i_size
, size
);
552 i_size_write(inode
, size
);
553 inode
->i_blocks
= (size
+ (1<<9) - 1) >> 9;
554 ci
->i_reported_size
= size
;
555 if (truncate_seq
!= ci
->i_truncate_seq
) {
556 dout("truncate_seq %u -> %u\n",
557 ci
->i_truncate_seq
, truncate_seq
);
558 ci
->i_truncate_seq
= truncate_seq
;
560 /* the MDS should have revoked these caps */
561 WARN_ON_ONCE(issued
& (CEPH_CAP_FILE_EXCL
|
564 CEPH_CAP_FILE_LAZYIO
));
566 * If we hold relevant caps, or in the case where we're
567 * not the only client referencing this file and we
568 * don't hold those caps, then we need to check whether
569 * the file is either opened or mmaped
571 if ((issued
& (CEPH_CAP_FILE_CACHE
|
572 CEPH_CAP_FILE_BUFFER
)) ||
573 mapping_mapped(inode
->i_mapping
) ||
574 __ceph_caps_file_wanted(ci
)) {
575 ci
->i_truncate_pending
++;
580 if (ceph_seq_cmp(truncate_seq
, ci
->i_truncate_seq
) >= 0 &&
581 ci
->i_truncate_size
!= truncate_size
) {
582 dout("truncate_size %lld -> %llu\n", ci
->i_truncate_size
,
584 ci
->i_truncate_size
= truncate_size
;
588 ceph_fscache_invalidate(inode
);
593 void ceph_fill_file_time(struct inode
*inode
, int issued
,
594 u64 time_warp_seq
, struct timespec
*ctime
,
595 struct timespec
*mtime
, struct timespec
*atime
)
597 struct ceph_inode_info
*ci
= ceph_inode(inode
);
600 if (issued
& (CEPH_CAP_FILE_EXCL
|
602 CEPH_CAP_FILE_BUFFER
|
604 CEPH_CAP_XATTR_EXCL
)) {
605 if (timespec_compare(ctime
, &inode
->i_ctime
) > 0) {
606 dout("ctime %ld.%09ld -> %ld.%09ld inc w/ cap\n",
607 inode
->i_ctime
.tv_sec
, inode
->i_ctime
.tv_nsec
,
608 ctime
->tv_sec
, ctime
->tv_nsec
);
609 inode
->i_ctime
= *ctime
;
611 if (ceph_seq_cmp(time_warp_seq
, ci
->i_time_warp_seq
) > 0) {
612 /* the MDS did a utimes() */
613 dout("mtime %ld.%09ld -> %ld.%09ld "
615 inode
->i_mtime
.tv_sec
, inode
->i_mtime
.tv_nsec
,
616 mtime
->tv_sec
, mtime
->tv_nsec
,
617 ci
->i_time_warp_seq
, (int)time_warp_seq
);
619 inode
->i_mtime
= *mtime
;
620 inode
->i_atime
= *atime
;
621 ci
->i_time_warp_seq
= time_warp_seq
;
622 } else if (time_warp_seq
== ci
->i_time_warp_seq
) {
623 /* nobody did utimes(); take the max */
624 if (timespec_compare(mtime
, &inode
->i_mtime
) > 0) {
625 dout("mtime %ld.%09ld -> %ld.%09ld inc\n",
626 inode
->i_mtime
.tv_sec
,
627 inode
->i_mtime
.tv_nsec
,
628 mtime
->tv_sec
, mtime
->tv_nsec
);
629 inode
->i_mtime
= *mtime
;
631 if (timespec_compare(atime
, &inode
->i_atime
) > 0) {
632 dout("atime %ld.%09ld -> %ld.%09ld inc\n",
633 inode
->i_atime
.tv_sec
,
634 inode
->i_atime
.tv_nsec
,
635 atime
->tv_sec
, atime
->tv_nsec
);
636 inode
->i_atime
= *atime
;
638 } else if (issued
& CEPH_CAP_FILE_EXCL
) {
639 /* we did a utimes(); ignore mds values */
644 /* we have no write|excl caps; whatever the MDS says is true */
645 if (ceph_seq_cmp(time_warp_seq
, ci
->i_time_warp_seq
) >= 0) {
646 inode
->i_ctime
= *ctime
;
647 inode
->i_mtime
= *mtime
;
648 inode
->i_atime
= *atime
;
649 ci
->i_time_warp_seq
= time_warp_seq
;
654 if (warn
) /* time_warp_seq shouldn't go backwards */
655 dout("%p mds time_warp_seq %llu < %u\n",
656 inode
, time_warp_seq
, ci
->i_time_warp_seq
);
660 * Populate an inode based on info from mds. May be called on new or
663 static int fill_inode(struct inode
*inode
, struct page
*locked_page
,
664 struct ceph_mds_reply_info_in
*iinfo
,
665 struct ceph_mds_reply_dirfrag
*dirinfo
,
666 struct ceph_mds_session
*session
,
667 unsigned long ttl_from
, int cap_fmode
,
668 struct ceph_cap_reservation
*caps_reservation
)
670 struct ceph_mds_client
*mdsc
= ceph_inode_to_client(inode
)->mdsc
;
671 struct ceph_mds_reply_inode
*info
= iinfo
->in
;
672 struct ceph_inode_info
*ci
= ceph_inode(inode
);
673 int issued
= 0, implemented
, new_issued
;
674 struct timespec mtime
, atime
, ctime
;
675 struct ceph_buffer
*xattr_blob
= NULL
;
676 struct ceph_cap
*new_cap
= NULL
;
679 bool queue_trunc
= false;
680 bool new_version
= false;
681 bool fill_inline
= false;
683 dout("fill_inode %p ino %llx.%llx v %llu had %llu\n",
684 inode
, ceph_vinop(inode
), le64_to_cpu(info
->version
),
687 /* prealloc new cap struct */
688 if (info
->cap
.caps
&& ceph_snap(inode
) == CEPH_NOSNAP
)
689 new_cap
= ceph_get_cap(mdsc
, caps_reservation
);
692 * prealloc xattr data, if it looks like we'll need it. only
693 * if len > 4 (meaning there are actually xattrs; the first 4
694 * bytes are the xattr count).
696 if (iinfo
->xattr_len
> 4) {
697 xattr_blob
= ceph_buffer_new(iinfo
->xattr_len
, GFP_NOFS
);
699 pr_err("fill_inode ENOMEM xattr blob %d bytes\n",
703 spin_lock(&ci
->i_ceph_lock
);
706 * provided version will be odd if inode value is projected,
707 * even if stable. skip the update if we have newer stable
708 * info (ours>=theirs, e.g. due to racing mds replies), unless
709 * we are getting projected (unstable) info (in which case the
710 * version is odd, and we want ours>theirs).
716 if (ci
->i_version
== 0 ||
717 ((info
->cap
.flags
& CEPH_CAP_FLAG_AUTH
) &&
718 le64_to_cpu(info
->version
) > (ci
->i_version
& ~1)))
721 issued
= __ceph_caps_issued(ci
, &implemented
);
722 issued
|= implemented
| __ceph_caps_dirty(ci
);
723 new_issued
= ~issued
& le32_to_cpu(info
->cap
.caps
);
726 ci
->i_version
= le64_to_cpu(info
->version
);
728 inode
->i_rdev
= le32_to_cpu(info
->rdev
);
729 inode
->i_blkbits
= fls(le32_to_cpu(info
->layout
.fl_stripe_unit
)) - 1;
731 if ((new_version
|| (new_issued
& CEPH_CAP_AUTH_SHARED
)) &&
732 (issued
& CEPH_CAP_AUTH_EXCL
) == 0) {
733 inode
->i_mode
= le32_to_cpu(info
->mode
);
734 inode
->i_uid
= make_kuid(&init_user_ns
, le32_to_cpu(info
->uid
));
735 inode
->i_gid
= make_kgid(&init_user_ns
, le32_to_cpu(info
->gid
));
736 dout("%p mode 0%o uid.gid %d.%d\n", inode
, inode
->i_mode
,
737 from_kuid(&init_user_ns
, inode
->i_uid
),
738 from_kgid(&init_user_ns
, inode
->i_gid
));
741 if ((new_version
|| (new_issued
& CEPH_CAP_LINK_SHARED
)) &&
742 (issued
& CEPH_CAP_LINK_EXCL
) == 0)
743 set_nlink(inode
, le32_to_cpu(info
->nlink
));
745 if (new_version
|| (new_issued
& CEPH_CAP_ANY_RD
)) {
746 /* be careful with mtime, atime, size */
747 ceph_decode_timespec(&atime
, &info
->atime
);
748 ceph_decode_timespec(&mtime
, &info
->mtime
);
749 ceph_decode_timespec(&ctime
, &info
->ctime
);
750 ceph_fill_file_time(inode
, issued
,
751 le32_to_cpu(info
->time_warp_seq
),
752 &ctime
, &mtime
, &atime
);
756 (new_issued
& (CEPH_CAP_ANY_FILE_RD
| CEPH_CAP_ANY_FILE_WR
))) {
757 if (ci
->i_layout
.fl_pg_pool
!= info
->layout
.fl_pg_pool
)
758 ci
->i_ceph_flags
&= ~CEPH_I_POOL_PERM
;
759 ci
->i_layout
= info
->layout
;
760 ci
->i_pool_ns_len
= iinfo
->pool_ns_len
;
762 queue_trunc
= ceph_fill_file_size(inode
, issued
,
763 le32_to_cpu(info
->truncate_seq
),
764 le64_to_cpu(info
->truncate_size
),
765 le64_to_cpu(info
->size
));
766 /* only update max_size on auth cap */
767 if ((info
->cap
.flags
& CEPH_CAP_FLAG_AUTH
) &&
768 ci
->i_max_size
!= le64_to_cpu(info
->max_size
)) {
769 dout("max_size %lld -> %llu\n", ci
->i_max_size
,
770 le64_to_cpu(info
->max_size
));
771 ci
->i_max_size
= le64_to_cpu(info
->max_size
);
776 /* note that if i_xattrs.len <= 4, i_xattrs.data will still be NULL. */
777 if ((ci
->i_xattrs
.version
== 0 || !(issued
& CEPH_CAP_XATTR_EXCL
)) &&
778 le64_to_cpu(info
->xattr_version
) > ci
->i_xattrs
.version
) {
779 if (ci
->i_xattrs
.blob
)
780 ceph_buffer_put(ci
->i_xattrs
.blob
);
781 ci
->i_xattrs
.blob
= xattr_blob
;
783 memcpy(ci
->i_xattrs
.blob
->vec
.iov_base
,
784 iinfo
->xattr_data
, iinfo
->xattr_len
);
785 ci
->i_xattrs
.version
= le64_to_cpu(info
->xattr_version
);
786 ceph_forget_all_cached_acls(inode
);
790 inode
->i_mapping
->a_ops
= &ceph_aops
;
792 switch (inode
->i_mode
& S_IFMT
) {
797 init_special_inode(inode
, inode
->i_mode
, inode
->i_rdev
);
798 inode
->i_op
= &ceph_file_iops
;
801 inode
->i_op
= &ceph_file_iops
;
802 inode
->i_fop
= &ceph_file_fops
;
805 inode
->i_op
= &ceph_symlink_iops
;
806 if (!ci
->i_symlink
) {
807 u32 symlen
= iinfo
->symlink_len
;
810 spin_unlock(&ci
->i_ceph_lock
);
813 if (WARN_ON(symlen
!= i_size_read(inode
)))
817 sym
= kstrndup(iinfo
->symlink
, symlen
, GFP_NOFS
);
821 spin_lock(&ci
->i_ceph_lock
);
825 kfree(sym
); /* lost a race */
827 inode
->i_link
= ci
->i_symlink
;
830 inode
->i_op
= &ceph_dir_iops
;
831 inode
->i_fop
= &ceph_dir_fops
;
833 ci
->i_dir_layout
= iinfo
->dir_layout
;
835 ci
->i_files
= le64_to_cpu(info
->files
);
836 ci
->i_subdirs
= le64_to_cpu(info
->subdirs
);
837 ci
->i_rbytes
= le64_to_cpu(info
->rbytes
);
838 ci
->i_rfiles
= le64_to_cpu(info
->rfiles
);
839 ci
->i_rsubdirs
= le64_to_cpu(info
->rsubdirs
);
840 ceph_decode_timespec(&ci
->i_rctime
, &info
->rctime
);
843 pr_err("fill_inode %llx.%llx BAD mode 0%o\n",
844 ceph_vinop(inode
), inode
->i_mode
);
847 /* were we issued a capability? */
848 if (info
->cap
.caps
) {
849 if (ceph_snap(inode
) == CEPH_NOSNAP
) {
850 unsigned caps
= le32_to_cpu(info
->cap
.caps
);
851 ceph_add_cap(inode
, session
,
852 le64_to_cpu(info
->cap
.cap_id
),
854 le32_to_cpu(info
->cap
.wanted
),
855 le32_to_cpu(info
->cap
.seq
),
856 le32_to_cpu(info
->cap
.mseq
),
857 le64_to_cpu(info
->cap
.realm
),
858 info
->cap
.flags
, &new_cap
);
860 /* set dir completion flag? */
861 if (S_ISDIR(inode
->i_mode
) &&
862 ci
->i_files
== 0 && ci
->i_subdirs
== 0 &&
863 (caps
& CEPH_CAP_FILE_SHARED
) &&
864 (issued
& CEPH_CAP_FILE_EXCL
) == 0 &&
865 !__ceph_dir_is_complete(ci
)) {
866 dout(" marking %p complete (empty)\n", inode
);
867 i_size_write(inode
, 0);
868 __ceph_dir_set_complete(ci
,
869 atomic64_read(&ci
->i_release_count
),
870 atomic64_read(&ci
->i_ordered_count
));
875 dout(" %p got snap_caps %s\n", inode
,
876 ceph_cap_string(le32_to_cpu(info
->cap
.caps
)));
877 ci
->i_snap_caps
|= le32_to_cpu(info
->cap
.caps
);
879 __ceph_get_fmode(ci
, cap_fmode
);
881 } else if (cap_fmode
>= 0) {
882 pr_warn("mds issued no caps on %llx.%llx\n",
884 __ceph_get_fmode(ci
, cap_fmode
);
887 if (iinfo
->inline_version
> 0 &&
888 iinfo
->inline_version
>= ci
->i_inline_version
) {
889 int cache_caps
= CEPH_CAP_FILE_CACHE
| CEPH_CAP_FILE_LAZYIO
;
890 ci
->i_inline_version
= iinfo
->inline_version
;
891 if (ci
->i_inline_version
!= CEPH_INLINE_NONE
&&
893 (le32_to_cpu(info
->cap
.caps
) & cache_caps
)))
897 spin_unlock(&ci
->i_ceph_lock
);
900 ceph_fill_inline_data(inode
, locked_page
,
901 iinfo
->inline_data
, iinfo
->inline_len
);
904 wake_up_all(&ci
->i_cap_wq
);
906 /* queue truncate if we saw i_size decrease */
908 ceph_queue_vmtruncate(inode
);
910 /* populate frag tree */
911 if (S_ISDIR(inode
->i_mode
))
912 ceph_fill_fragtree(inode
, &info
->fragtree
, dirinfo
);
914 /* update delegation info? */
916 ceph_fill_dirfrag(inode
, dirinfo
);
921 ceph_put_cap(mdsc
, new_cap
);
923 ceph_buffer_put(xattr_blob
);
928 * caller should hold session s_mutex.
930 static void update_dentry_lease(struct dentry
*dentry
,
931 struct ceph_mds_reply_lease
*lease
,
932 struct ceph_mds_session
*session
,
933 unsigned long from_time
)
935 struct ceph_dentry_info
*di
= ceph_dentry(dentry
);
936 long unsigned duration
= le32_to_cpu(lease
->duration_ms
);
937 long unsigned ttl
= from_time
+ (duration
* HZ
) / 1000;
938 long unsigned half_ttl
= from_time
+ (duration
* HZ
/ 2) / 1000;
941 /* only track leases on regular dentries */
942 if (dentry
->d_op
!= &ceph_dentry_ops
)
945 spin_lock(&dentry
->d_lock
);
946 dout("update_dentry_lease %p duration %lu ms ttl %lu\n",
947 dentry
, duration
, ttl
);
949 /* make lease_rdcache_gen match directory */
950 dir
= d_inode(dentry
->d_parent
);
951 di
->lease_shared_gen
= ceph_inode(dir
)->i_shared_gen
;
956 if (di
->lease_gen
== session
->s_cap_gen
&&
957 time_before(ttl
, dentry
->d_time
))
958 goto out_unlock
; /* we already have a newer lease. */
960 if (di
->lease_session
&& di
->lease_session
!= session
)
963 ceph_dentry_lru_touch(dentry
);
965 if (!di
->lease_session
)
966 di
->lease_session
= ceph_get_mds_session(session
);
967 di
->lease_gen
= session
->s_cap_gen
;
968 di
->lease_seq
= le32_to_cpu(lease
->seq
);
969 di
->lease_renew_after
= half_ttl
;
970 di
->lease_renew_from
= 0;
971 dentry
->d_time
= ttl
;
973 spin_unlock(&dentry
->d_lock
);
978 * splice a dentry to an inode.
979 * caller must hold directory i_mutex for this to be safe.
981 * we will only rehash the resulting dentry if @prehash is
982 * true; @prehash will be set to false (for the benefit of
983 * the caller) if we fail.
985 static struct dentry
*splice_dentry(struct dentry
*dn
, struct inode
*in
,
988 struct dentry
*realdn
;
992 /* dn must be unhashed */
995 realdn
= d_splice_alias(in
, dn
);
996 if (IS_ERR(realdn
)) {
997 pr_err("splice_dentry error %ld %p inode %p ino %llx.%llx\n",
998 PTR_ERR(realdn
), dn
, in
, ceph_vinop(in
));
1000 *prehash
= false; /* don't rehash on error */
1001 dn
= realdn
; /* note realdn contains the error */
1003 } else if (realdn
) {
1004 dout("dn %p (%d) spliced with %p (%d) "
1005 "inode %p ino %llx.%llx\n",
1007 realdn
, d_count(realdn
),
1008 d_inode(realdn
), ceph_vinop(d_inode(realdn
)));
1012 BUG_ON(!ceph_dentry(dn
));
1013 dout("dn %p attached to %p ino %llx.%llx\n",
1014 dn
, d_inode(dn
), ceph_vinop(d_inode(dn
)));
1016 if ((!prehash
|| *prehash
) && d_unhashed(dn
))
1023 * Incorporate results into the local cache. This is either just
1024 * one inode, or a directory, dentry, and possibly linked-to inode (e.g.,
1027 * A reply may contain
1028 * a directory inode along with a dentry.
1029 * and/or a target inode
1031 * Called with snap_rwsem (read).
1033 int ceph_fill_trace(struct super_block
*sb
, struct ceph_mds_request
*req
,
1034 struct ceph_mds_session
*session
)
1036 struct ceph_mds_reply_info_parsed
*rinfo
= &req
->r_reply_info
;
1037 struct inode
*in
= NULL
;
1038 struct ceph_vino vino
;
1039 struct ceph_fs_client
*fsc
= ceph_sb_to_client(sb
);
1042 dout("fill_trace %p is_dentry %d is_target %d\n", req
,
1043 rinfo
->head
->is_dentry
, rinfo
->head
->is_target
);
1049 * If we resend completed ops to a recovering mds, we get no
1050 * trace. Since that is very rare, pretend this is the case
1051 * to ensure the 'no trace' handlers in the callers behave.
1053 * Fill in inodes unconditionally to avoid breaking cap
1056 if (rinfo
->head
->op
& CEPH_MDS_OP_WRITE
) {
1057 pr_info("fill_trace faking empty trace on %lld %s\n",
1058 req
->r_tid
, ceph_mds_op_name(rinfo
->head
->op
));
1059 if (rinfo
->head
->is_dentry
) {
1060 rinfo
->head
->is_dentry
= 0;
1061 err
= fill_inode(req
->r_locked_dir
,
1062 &rinfo
->diri
, rinfo
->dirfrag
,
1063 session
, req
->r_request_started
, -1);
1065 if (rinfo
->head
->is_target
) {
1066 rinfo
->head
->is_target
= 0;
1067 ininfo
= rinfo
->targeti
.in
;
1068 vino
.ino
= le64_to_cpu(ininfo
->ino
);
1069 vino
.snap
= le64_to_cpu(ininfo
->snapid
);
1070 in
= ceph_get_inode(sb
, vino
);
1071 err
= fill_inode(in
, &rinfo
->targeti
, NULL
,
1072 session
, req
->r_request_started
,
1079 if (!rinfo
->head
->is_target
&& !rinfo
->head
->is_dentry
) {
1080 dout("fill_trace reply is empty!\n");
1081 if (rinfo
->head
->result
== 0 && req
->r_locked_dir
)
1082 ceph_invalidate_dir_request(req
);
1086 if (rinfo
->head
->is_dentry
) {
1087 struct inode
*dir
= req
->r_locked_dir
;
1090 err
= fill_inode(dir
, NULL
,
1091 &rinfo
->diri
, rinfo
->dirfrag
,
1092 session
, req
->r_request_started
, -1,
1093 &req
->r_caps_reservation
);
1100 if (dir
&& req
->r_op
== CEPH_MDS_OP_LOOKUPNAME
) {
1102 struct dentry
*dn
, *parent
;
1104 BUG_ON(!rinfo
->head
->is_target
);
1105 BUG_ON(req
->r_dentry
);
1107 parent
= d_find_any_alias(dir
);
1110 dname
.name
= rinfo
->dname
;
1111 dname
.len
= rinfo
->dname_len
;
1112 dname
.hash
= full_name_hash(dname
.name
, dname
.len
);
1113 vino
.ino
= le64_to_cpu(rinfo
->targeti
.in
->ino
);
1114 vino
.snap
= le64_to_cpu(rinfo
->targeti
.in
->snapid
);
1116 dn
= d_lookup(parent
, &dname
);
1117 dout("d_lookup on parent=%p name=%.*s got %p\n",
1118 parent
, dname
.len
, dname
.name
, dn
);
1121 dn
= d_alloc(parent
, &dname
);
1122 dout("d_alloc %p '%.*s' = %p\n", parent
,
1123 dname
.len
, dname
.name
, dn
);
1129 err
= ceph_init_dentry(dn
);
1135 } else if (d_really_is_positive(dn
) &&
1136 (ceph_ino(d_inode(dn
)) != vino
.ino
||
1137 ceph_snap(d_inode(dn
)) != vino
.snap
)) {
1138 dout(" dn %p points to wrong inode %p\n",
1150 if (rinfo
->head
->is_target
) {
1151 vino
.ino
= le64_to_cpu(rinfo
->targeti
.in
->ino
);
1152 vino
.snap
= le64_to_cpu(rinfo
->targeti
.in
->snapid
);
1154 in
= ceph_get_inode(sb
, vino
);
1159 req
->r_target_inode
= in
;
1161 err
= fill_inode(in
, req
->r_locked_page
, &rinfo
->targeti
, NULL
,
1162 session
, req
->r_request_started
,
1163 (!req
->r_aborted
&& rinfo
->head
->result
== 0) ?
1165 &req
->r_caps_reservation
);
1167 pr_err("fill_inode badness %p %llx.%llx\n",
1168 in
, ceph_vinop(in
));
1174 * ignore null lease/binding on snapdir ENOENT, or else we
1175 * will have trouble splicing in the virtual snapdir later
1177 if (rinfo
->head
->is_dentry
&& !req
->r_aborted
&&
1178 req
->r_locked_dir
&&
1179 (rinfo
->head
->is_target
|| strncmp(req
->r_dentry
->d_name
.name
,
1180 fsc
->mount_options
->snapdir_name
,
1181 req
->r_dentry
->d_name
.len
))) {
1183 * lookup link rename : null -> possibly existing inode
1184 * mknod symlink mkdir : null -> new inode
1185 * unlink : linked -> null
1187 struct inode
*dir
= req
->r_locked_dir
;
1188 struct dentry
*dn
= req
->r_dentry
;
1189 bool have_dir_cap
, have_lease
;
1193 BUG_ON(d_inode(dn
->d_parent
) != dir
);
1194 BUG_ON(ceph_ino(dir
) !=
1195 le64_to_cpu(rinfo
->diri
.in
->ino
));
1196 BUG_ON(ceph_snap(dir
) !=
1197 le64_to_cpu(rinfo
->diri
.in
->snapid
));
1199 /* do we have a lease on the whole dir? */
1201 (le32_to_cpu(rinfo
->diri
.in
->cap
.caps
) &
1202 CEPH_CAP_FILE_SHARED
);
1204 /* do we have a dn lease? */
1205 have_lease
= have_dir_cap
||
1206 le32_to_cpu(rinfo
->dlease
->duration_ms
);
1208 dout("fill_trace no dentry lease or dir cap\n");
1211 if (req
->r_old_dentry
&& req
->r_op
== CEPH_MDS_OP_RENAME
) {
1212 struct inode
*olddir
= req
->r_old_dentry_dir
;
1215 dout(" src %p '%pd' dst %p '%pd'\n",
1219 dout("fill_trace doing d_move %p -> %p\n",
1220 req
->r_old_dentry
, dn
);
1222 /* d_move screws up sibling dentries' offsets */
1223 ceph_dir_clear_ordered(dir
);
1224 ceph_dir_clear_ordered(olddir
);
1226 d_move(req
->r_old_dentry
, dn
);
1227 dout(" src %p '%pd' dst %p '%pd'\n",
1232 /* ensure target dentry is invalidated, despite
1233 rehashing bug in vfs_rename_dir */
1234 ceph_invalidate_dentry_lease(dn
);
1236 dout("dn %p gets new offset %lld\n", req
->r_old_dentry
,
1237 ceph_dentry(req
->r_old_dentry
)->offset
);
1239 dn
= req
->r_old_dentry
; /* use old_dentry */
1243 if (!rinfo
->head
->is_target
) {
1244 dout("fill_trace null dentry\n");
1245 if (d_really_is_positive(dn
)) {
1246 ceph_dir_clear_ordered(dir
);
1247 dout("d_delete %p\n", dn
);
1250 dout("d_instantiate %p NULL\n", dn
);
1251 d_instantiate(dn
, NULL
);
1252 if (have_lease
&& d_unhashed(dn
))
1254 update_dentry_lease(dn
, rinfo
->dlease
,
1256 req
->r_request_started
);
1261 /* attach proper inode */
1262 if (d_really_is_negative(dn
)) {
1263 ceph_dir_clear_ordered(dir
);
1265 dn
= splice_dentry(dn
, in
, &have_lease
);
1270 req
->r_dentry
= dn
; /* may have spliced */
1271 } else if (d_really_is_positive(dn
) && d_inode(dn
) != in
) {
1272 dout(" %p links to %p %llx.%llx, not %llx.%llx\n",
1273 dn
, d_inode(dn
), ceph_vinop(d_inode(dn
)),
1279 update_dentry_lease(dn
, rinfo
->dlease
, session
,
1280 req
->r_request_started
);
1281 dout(" final dn %p\n", dn
);
1282 } else if (!req
->r_aborted
&&
1283 (req
->r_op
== CEPH_MDS_OP_LOOKUPSNAP
||
1284 req
->r_op
== CEPH_MDS_OP_MKSNAP
)) {
1285 struct dentry
*dn
= req
->r_dentry
;
1286 struct inode
*dir
= req
->r_locked_dir
;
1288 /* fill out a snapdir LOOKUPSNAP dentry */
1291 BUG_ON(ceph_snap(dir
) != CEPH_SNAPDIR
);
1292 dout(" linking snapped dir %p to dn %p\n", in
, dn
);
1293 ceph_dir_clear_ordered(dir
);
1295 dn
= splice_dentry(dn
, in
, NULL
);
1300 req
->r_dentry
= dn
; /* may have spliced */
1303 dout("fill_trace done err=%d\n", err
);
1308 * Prepopulate our cache with readdir results, leases, etc.
1310 static int readdir_prepopulate_inodes_only(struct ceph_mds_request
*req
,
1311 struct ceph_mds_session
*session
)
1313 struct ceph_mds_reply_info_parsed
*rinfo
= &req
->r_reply_info
;
1316 for (i
= 0; i
< rinfo
->dir_nr
; i
++) {
1317 struct ceph_vino vino
;
1321 vino
.ino
= le64_to_cpu(rinfo
->dir_in
[i
].in
->ino
);
1322 vino
.snap
= le64_to_cpu(rinfo
->dir_in
[i
].in
->snapid
);
1324 in
= ceph_get_inode(req
->r_dentry
->d_sb
, vino
);
1327 dout("new_inode badness got %d\n", err
);
1330 rc
= fill_inode(in
, NULL
, &rinfo
->dir_in
[i
], NULL
, session
,
1331 req
->r_request_started
, -1,
1332 &req
->r_caps_reservation
);
1334 pr_err("fill_inode badness on %p got %d\n", in
, rc
);
1343 void ceph_readdir_cache_release(struct ceph_readdir_cache_control
*ctl
)
1347 page_cache_release(ctl
->page
);
1352 static int fill_readdir_cache(struct inode
*dir
, struct dentry
*dn
,
1353 struct ceph_readdir_cache_control
*ctl
,
1354 struct ceph_mds_request
*req
)
1356 struct ceph_inode_info
*ci
= ceph_inode(dir
);
1357 unsigned nsize
= PAGE_CACHE_SIZE
/ sizeof(struct dentry
*);
1358 unsigned idx
= ctl
->index
% nsize
;
1359 pgoff_t pgoff
= ctl
->index
/ nsize
;
1361 if (!ctl
->page
|| pgoff
!= page_index(ctl
->page
)) {
1362 ceph_readdir_cache_release(ctl
);
1363 ctl
->page
= grab_cache_page(&dir
->i_data
, pgoff
);
1368 /* reading/filling the cache are serialized by
1369 * i_mutex, no need to use page lock */
1370 unlock_page(ctl
->page
);
1371 ctl
->dentries
= kmap(ctl
->page
);
1374 if (req
->r_dir_release_cnt
== atomic64_read(&ci
->i_release_count
) &&
1375 req
->r_dir_ordered_cnt
== atomic64_read(&ci
->i_ordered_count
)) {
1376 dout("readdir cache dn %p idx %d\n", dn
, ctl
->index
);
1377 ctl
->dentries
[idx
] = dn
;
1380 dout("disable readdir cache\n");
1386 int ceph_readdir_prepopulate(struct ceph_mds_request
*req
,
1387 struct ceph_mds_session
*session
)
1389 struct dentry
*parent
= req
->r_dentry
;
1390 struct ceph_mds_reply_info_parsed
*rinfo
= &req
->r_reply_info
;
1394 int err
= 0, ret
, i
;
1395 struct inode
*snapdir
= NULL
;
1396 struct ceph_mds_request_head
*rhead
= req
->r_request
->front
.iov_base
;
1397 struct ceph_dentry_info
*di
;
1398 u32 frag
= le32_to_cpu(rhead
->args
.readdir
.frag
);
1399 struct ceph_readdir_cache_control cache_ctl
= {};
1402 return readdir_prepopulate_inodes_only(req
, session
);
1404 if (rinfo
->dir_dir
&&
1405 le32_to_cpu(rinfo
->dir_dir
->frag
) != frag
) {
1406 dout("readdir_prepopulate got new frag %x -> %x\n",
1407 frag
, le32_to_cpu(rinfo
->dir_dir
->frag
));
1408 frag
= le32_to_cpu(rinfo
->dir_dir
->frag
);
1409 if (ceph_frag_is_leftmost(frag
))
1410 req
->r_readdir_offset
= 2;
1412 req
->r_readdir_offset
= 0;
1415 if (le32_to_cpu(rinfo
->head
->op
) == CEPH_MDS_OP_LSSNAP
) {
1416 snapdir
= ceph_get_snapdir(d_inode(parent
));
1417 parent
= d_find_alias(snapdir
);
1418 dout("readdir_prepopulate %d items under SNAPDIR dn %p\n",
1419 rinfo
->dir_nr
, parent
);
1421 dout("readdir_prepopulate %d items under dn %p\n",
1422 rinfo
->dir_nr
, parent
);
1424 ceph_fill_dirfrag(d_inode(parent
), rinfo
->dir_dir
);
1427 if (ceph_frag_is_leftmost(frag
) && req
->r_readdir_offset
== 2) {
1428 /* note dir version at start of readdir so we can tell
1429 * if any dentries get dropped */
1430 struct ceph_inode_info
*ci
= ceph_inode(d_inode(parent
));
1431 req
->r_dir_release_cnt
= atomic64_read(&ci
->i_release_count
);
1432 req
->r_dir_ordered_cnt
= atomic64_read(&ci
->i_ordered_count
);
1433 req
->r_readdir_cache_idx
= 0;
1436 cache_ctl
.index
= req
->r_readdir_cache_idx
;
1438 /* FIXME: release caps/leases if error occurs */
1439 for (i
= 0; i
< rinfo
->dir_nr
; i
++) {
1440 struct ceph_vino vino
;
1442 dname
.name
= rinfo
->dir_dname
[i
];
1443 dname
.len
= rinfo
->dir_dname_len
[i
];
1444 dname
.hash
= full_name_hash(dname
.name
, dname
.len
);
1446 vino
.ino
= le64_to_cpu(rinfo
->dir_in
[i
].in
->ino
);
1447 vino
.snap
= le64_to_cpu(rinfo
->dir_in
[i
].in
->snapid
);
1450 dn
= d_lookup(parent
, &dname
);
1451 dout("d_lookup on parent=%p name=%.*s got %p\n",
1452 parent
, dname
.len
, dname
.name
, dn
);
1455 dn
= d_alloc(parent
, &dname
);
1456 dout("d_alloc %p '%.*s' = %p\n", parent
,
1457 dname
.len
, dname
.name
, dn
);
1459 dout("d_alloc badness\n");
1463 ret
= ceph_init_dentry(dn
);
1469 } else if (d_really_is_positive(dn
) &&
1470 (ceph_ino(d_inode(dn
)) != vino
.ino
||
1471 ceph_snap(d_inode(dn
)) != vino
.snap
)) {
1472 dout(" dn %p points to wrong inode %p\n",
1480 if (d_really_is_positive(dn
)) {
1483 in
= ceph_get_inode(parent
->d_sb
, vino
);
1485 dout("new_inode badness\n");
1493 ret
= fill_inode(in
, NULL
, &rinfo
->dir_in
[i
], NULL
, session
,
1494 req
->r_request_started
, -1,
1495 &req
->r_caps_reservation
);
1497 pr_err("fill_inode badness on %p\n", in
);
1498 if (d_really_is_negative(dn
))
1505 if (d_really_is_negative(dn
)) {
1506 struct dentry
*realdn
= splice_dentry(dn
, in
, NULL
);
1507 if (IS_ERR(realdn
)) {
1508 err
= PTR_ERR(realdn
);
1517 di
->offset
= ceph_make_fpos(frag
, i
+ req
->r_readdir_offset
);
1519 update_dentry_lease(dn
, rinfo
->dir_dlease
[i
],
1521 req
->r_request_started
);
1523 if (err
== 0 && cache_ctl
.index
>= 0) {
1524 ret
= fill_readdir_cache(d_inode(parent
), dn
,
1535 req
->r_did_prepopulate
= true;
1536 req
->r_readdir_cache_idx
= cache_ctl
.index
;
1538 ceph_readdir_cache_release(&cache_ctl
);
1543 dout("readdir_prepopulate done\n");
1547 int ceph_inode_set_size(struct inode
*inode
, loff_t size
)
1549 struct ceph_inode_info
*ci
= ceph_inode(inode
);
1552 spin_lock(&ci
->i_ceph_lock
);
1553 dout("set_size %p %llu -> %llu\n", inode
, inode
->i_size
, size
);
1554 i_size_write(inode
, size
);
1555 inode
->i_blocks
= (size
+ (1 << 9) - 1) >> 9;
1557 /* tell the MDS if we are approaching max_size */
1558 if ((size
<< 1) >= ci
->i_max_size
&&
1559 (ci
->i_reported_size
<< 1) < ci
->i_max_size
)
1562 spin_unlock(&ci
->i_ceph_lock
);
1567 * Write back inode data in a worker thread. (This can't be done
1568 * in the message handler context.)
1570 void ceph_queue_writeback(struct inode
*inode
)
1573 if (queue_work(ceph_inode_to_client(inode
)->wb_wq
,
1574 &ceph_inode(inode
)->i_wb_work
)) {
1575 dout("ceph_queue_writeback %p\n", inode
);
1577 dout("ceph_queue_writeback %p failed\n", inode
);
1582 static void ceph_writeback_work(struct work_struct
*work
)
1584 struct ceph_inode_info
*ci
= container_of(work
, struct ceph_inode_info
,
1586 struct inode
*inode
= &ci
->vfs_inode
;
1588 dout("writeback %p\n", inode
);
1589 filemap_fdatawrite(&inode
->i_data
);
1594 * queue an async invalidation
1596 void ceph_queue_invalidate(struct inode
*inode
)
1599 if (queue_work(ceph_inode_to_client(inode
)->pg_inv_wq
,
1600 &ceph_inode(inode
)->i_pg_inv_work
)) {
1601 dout("ceph_queue_invalidate %p\n", inode
);
1603 dout("ceph_queue_invalidate %p failed\n", inode
);
1609 * Invalidate inode pages in a worker thread. (This can't be done
1610 * in the message handler context.)
1612 static void ceph_invalidate_work(struct work_struct
*work
)
1614 struct ceph_inode_info
*ci
= container_of(work
, struct ceph_inode_info
,
1616 struct inode
*inode
= &ci
->vfs_inode
;
1620 mutex_lock(&ci
->i_truncate_mutex
);
1621 spin_lock(&ci
->i_ceph_lock
);
1622 dout("invalidate_pages %p gen %d revoking %d\n", inode
,
1623 ci
->i_rdcache_gen
, ci
->i_rdcache_revoking
);
1624 if (ci
->i_rdcache_revoking
!= ci
->i_rdcache_gen
) {
1625 if (__ceph_caps_revoking_other(ci
, NULL
, CEPH_CAP_FILE_CACHE
))
1627 spin_unlock(&ci
->i_ceph_lock
);
1628 mutex_unlock(&ci
->i_truncate_mutex
);
1631 orig_gen
= ci
->i_rdcache_gen
;
1632 spin_unlock(&ci
->i_ceph_lock
);
1634 truncate_pagecache(inode
, 0);
1636 spin_lock(&ci
->i_ceph_lock
);
1637 if (orig_gen
== ci
->i_rdcache_gen
&&
1638 orig_gen
== ci
->i_rdcache_revoking
) {
1639 dout("invalidate_pages %p gen %d successful\n", inode
,
1641 ci
->i_rdcache_revoking
--;
1644 dout("invalidate_pages %p gen %d raced, now %d revoking %d\n",
1645 inode
, orig_gen
, ci
->i_rdcache_gen
,
1646 ci
->i_rdcache_revoking
);
1647 if (__ceph_caps_revoking_other(ci
, NULL
, CEPH_CAP_FILE_CACHE
))
1650 spin_unlock(&ci
->i_ceph_lock
);
1651 mutex_unlock(&ci
->i_truncate_mutex
);
1654 ceph_check_caps(ci
, 0, NULL
);
1660 * called by trunc_wq;
1662 * We also truncate in a separate thread as well.
1664 static void ceph_vmtruncate_work(struct work_struct
*work
)
1666 struct ceph_inode_info
*ci
= container_of(work
, struct ceph_inode_info
,
1668 struct inode
*inode
= &ci
->vfs_inode
;
1670 dout("vmtruncate_work %p\n", inode
);
1671 __ceph_do_pending_vmtruncate(inode
);
1676 * Queue an async vmtruncate. If we fail to queue work, we will handle
1677 * the truncation the next time we call __ceph_do_pending_vmtruncate.
1679 void ceph_queue_vmtruncate(struct inode
*inode
)
1681 struct ceph_inode_info
*ci
= ceph_inode(inode
);
1685 if (queue_work(ceph_sb_to_client(inode
->i_sb
)->trunc_wq
,
1686 &ci
->i_vmtruncate_work
)) {
1687 dout("ceph_queue_vmtruncate %p\n", inode
);
1689 dout("ceph_queue_vmtruncate %p failed, pending=%d\n",
1690 inode
, ci
->i_truncate_pending
);
1696 * Make sure any pending truncation is applied before doing anything
1697 * that may depend on it.
1699 void __ceph_do_pending_vmtruncate(struct inode
*inode
)
1701 struct ceph_inode_info
*ci
= ceph_inode(inode
);
1703 int wrbuffer_refs
, finish
= 0;
1705 mutex_lock(&ci
->i_truncate_mutex
);
1707 spin_lock(&ci
->i_ceph_lock
);
1708 if (ci
->i_truncate_pending
== 0) {
1709 dout("__do_pending_vmtruncate %p none pending\n", inode
);
1710 spin_unlock(&ci
->i_ceph_lock
);
1711 mutex_unlock(&ci
->i_truncate_mutex
);
1716 * make sure any dirty snapped pages are flushed before we
1717 * possibly truncate them.. so write AND block!
1719 if (ci
->i_wrbuffer_ref_head
< ci
->i_wrbuffer_ref
) {
1720 dout("__do_pending_vmtruncate %p flushing snaps first\n",
1722 spin_unlock(&ci
->i_ceph_lock
);
1723 filemap_write_and_wait_range(&inode
->i_data
, 0,
1724 inode
->i_sb
->s_maxbytes
);
1728 /* there should be no reader or writer */
1729 WARN_ON_ONCE(ci
->i_rd_ref
|| ci
->i_wr_ref
);
1731 to
= ci
->i_truncate_size
;
1732 wrbuffer_refs
= ci
->i_wrbuffer_ref
;
1733 dout("__do_pending_vmtruncate %p (%d) to %lld\n", inode
,
1734 ci
->i_truncate_pending
, to
);
1735 spin_unlock(&ci
->i_ceph_lock
);
1737 truncate_pagecache(inode
, to
);
1739 spin_lock(&ci
->i_ceph_lock
);
1740 if (to
== ci
->i_truncate_size
) {
1741 ci
->i_truncate_pending
= 0;
1744 spin_unlock(&ci
->i_ceph_lock
);
1748 mutex_unlock(&ci
->i_truncate_mutex
);
1750 if (wrbuffer_refs
== 0)
1751 ceph_check_caps(ci
, CHECK_CAPS_AUTHONLY
, NULL
);
1753 wake_up_all(&ci
->i_cap_wq
);
1759 static const struct inode_operations ceph_symlink_iops
= {
1760 .readlink
= generic_readlink
,
1761 .get_link
= simple_get_link
,
1762 .setattr
= ceph_setattr
,
1763 .getattr
= ceph_getattr
,
1764 .setxattr
= ceph_setxattr
,
1765 .getxattr
= ceph_getxattr
,
1766 .listxattr
= ceph_listxattr
,
1767 .removexattr
= ceph_removexattr
,
1773 int ceph_setattr(struct dentry
*dentry
, struct iattr
*attr
)
1775 struct inode
*inode
= d_inode(dentry
);
1776 struct ceph_inode_info
*ci
= ceph_inode(inode
);
1777 const unsigned int ia_valid
= attr
->ia_valid
;
1778 struct ceph_mds_request
*req
;
1779 struct ceph_mds_client
*mdsc
= ceph_sb_to_client(dentry
->d_sb
)->mdsc
;
1780 struct ceph_cap_flush
*prealloc_cf
;
1782 int release
= 0, dirtied
= 0;
1785 int inode_dirty_flags
= 0;
1786 bool lock_snap_rwsem
= false;
1788 if (ceph_snap(inode
) != CEPH_NOSNAP
)
1791 err
= inode_change_ok(inode
, attr
);
1795 prealloc_cf
= ceph_alloc_cap_flush();
1799 req
= ceph_mdsc_create_request(mdsc
, CEPH_MDS_OP_SETATTR
,
1802 ceph_free_cap_flush(prealloc_cf
);
1803 return PTR_ERR(req
);
1806 spin_lock(&ci
->i_ceph_lock
);
1807 issued
= __ceph_caps_issued(ci
, NULL
);
1809 if (!ci
->i_head_snapc
&&
1810 (issued
& (CEPH_CAP_ANY_EXCL
| CEPH_CAP_FILE_WR
))) {
1811 lock_snap_rwsem
= true;
1812 if (!down_read_trylock(&mdsc
->snap_rwsem
)) {
1813 spin_unlock(&ci
->i_ceph_lock
);
1814 down_read(&mdsc
->snap_rwsem
);
1815 spin_lock(&ci
->i_ceph_lock
);
1816 issued
= __ceph_caps_issued(ci
, NULL
);
1820 dout("setattr %p issued %s\n", inode
, ceph_cap_string(issued
));
1822 if (ia_valid
& ATTR_UID
) {
1823 dout("setattr %p uid %d -> %d\n", inode
,
1824 from_kuid(&init_user_ns
, inode
->i_uid
),
1825 from_kuid(&init_user_ns
, attr
->ia_uid
));
1826 if (issued
& CEPH_CAP_AUTH_EXCL
) {
1827 inode
->i_uid
= attr
->ia_uid
;
1828 dirtied
|= CEPH_CAP_AUTH_EXCL
;
1829 } else if ((issued
& CEPH_CAP_AUTH_SHARED
) == 0 ||
1830 !uid_eq(attr
->ia_uid
, inode
->i_uid
)) {
1831 req
->r_args
.setattr
.uid
= cpu_to_le32(
1832 from_kuid(&init_user_ns
, attr
->ia_uid
));
1833 mask
|= CEPH_SETATTR_UID
;
1834 release
|= CEPH_CAP_AUTH_SHARED
;
1837 if (ia_valid
& ATTR_GID
) {
1838 dout("setattr %p gid %d -> %d\n", inode
,
1839 from_kgid(&init_user_ns
, inode
->i_gid
),
1840 from_kgid(&init_user_ns
, attr
->ia_gid
));
1841 if (issued
& CEPH_CAP_AUTH_EXCL
) {
1842 inode
->i_gid
= attr
->ia_gid
;
1843 dirtied
|= CEPH_CAP_AUTH_EXCL
;
1844 } else if ((issued
& CEPH_CAP_AUTH_SHARED
) == 0 ||
1845 !gid_eq(attr
->ia_gid
, inode
->i_gid
)) {
1846 req
->r_args
.setattr
.gid
= cpu_to_le32(
1847 from_kgid(&init_user_ns
, attr
->ia_gid
));
1848 mask
|= CEPH_SETATTR_GID
;
1849 release
|= CEPH_CAP_AUTH_SHARED
;
1852 if (ia_valid
& ATTR_MODE
) {
1853 dout("setattr %p mode 0%o -> 0%o\n", inode
, inode
->i_mode
,
1855 if (issued
& CEPH_CAP_AUTH_EXCL
) {
1856 inode
->i_mode
= attr
->ia_mode
;
1857 dirtied
|= CEPH_CAP_AUTH_EXCL
;
1858 } else if ((issued
& CEPH_CAP_AUTH_SHARED
) == 0 ||
1859 attr
->ia_mode
!= inode
->i_mode
) {
1860 inode
->i_mode
= attr
->ia_mode
;
1861 req
->r_args
.setattr
.mode
= cpu_to_le32(attr
->ia_mode
);
1862 mask
|= CEPH_SETATTR_MODE
;
1863 release
|= CEPH_CAP_AUTH_SHARED
;
1867 if (ia_valid
& ATTR_ATIME
) {
1868 dout("setattr %p atime %ld.%ld -> %ld.%ld\n", inode
,
1869 inode
->i_atime
.tv_sec
, inode
->i_atime
.tv_nsec
,
1870 attr
->ia_atime
.tv_sec
, attr
->ia_atime
.tv_nsec
);
1871 if (issued
& CEPH_CAP_FILE_EXCL
) {
1872 ci
->i_time_warp_seq
++;
1873 inode
->i_atime
= attr
->ia_atime
;
1874 dirtied
|= CEPH_CAP_FILE_EXCL
;
1875 } else if ((issued
& CEPH_CAP_FILE_WR
) &&
1876 timespec_compare(&inode
->i_atime
,
1877 &attr
->ia_atime
) < 0) {
1878 inode
->i_atime
= attr
->ia_atime
;
1879 dirtied
|= CEPH_CAP_FILE_WR
;
1880 } else if ((issued
& CEPH_CAP_FILE_SHARED
) == 0 ||
1881 !timespec_equal(&inode
->i_atime
, &attr
->ia_atime
)) {
1882 ceph_encode_timespec(&req
->r_args
.setattr
.atime
,
1884 mask
|= CEPH_SETATTR_ATIME
;
1885 release
|= CEPH_CAP_FILE_CACHE
| CEPH_CAP_FILE_RD
|
1889 if (ia_valid
& ATTR_MTIME
) {
1890 dout("setattr %p mtime %ld.%ld -> %ld.%ld\n", inode
,
1891 inode
->i_mtime
.tv_sec
, inode
->i_mtime
.tv_nsec
,
1892 attr
->ia_mtime
.tv_sec
, attr
->ia_mtime
.tv_nsec
);
1893 if (issued
& CEPH_CAP_FILE_EXCL
) {
1894 ci
->i_time_warp_seq
++;
1895 inode
->i_mtime
= attr
->ia_mtime
;
1896 dirtied
|= CEPH_CAP_FILE_EXCL
;
1897 } else if ((issued
& CEPH_CAP_FILE_WR
) &&
1898 timespec_compare(&inode
->i_mtime
,
1899 &attr
->ia_mtime
) < 0) {
1900 inode
->i_mtime
= attr
->ia_mtime
;
1901 dirtied
|= CEPH_CAP_FILE_WR
;
1902 } else if ((issued
& CEPH_CAP_FILE_SHARED
) == 0 ||
1903 !timespec_equal(&inode
->i_mtime
, &attr
->ia_mtime
)) {
1904 ceph_encode_timespec(&req
->r_args
.setattr
.mtime
,
1906 mask
|= CEPH_SETATTR_MTIME
;
1907 release
|= CEPH_CAP_FILE_SHARED
| CEPH_CAP_FILE_RD
|
1911 if (ia_valid
& ATTR_SIZE
) {
1912 dout("setattr %p size %lld -> %lld\n", inode
,
1913 inode
->i_size
, attr
->ia_size
);
1914 if ((issued
& CEPH_CAP_FILE_EXCL
) &&
1915 attr
->ia_size
> inode
->i_size
) {
1916 i_size_write(inode
, attr
->ia_size
);
1918 (attr
->ia_size
+ (1 << 9) - 1) >> 9;
1919 inode
->i_ctime
= attr
->ia_ctime
;
1920 ci
->i_reported_size
= attr
->ia_size
;
1921 dirtied
|= CEPH_CAP_FILE_EXCL
;
1922 } else if ((issued
& CEPH_CAP_FILE_SHARED
) == 0 ||
1923 attr
->ia_size
!= inode
->i_size
) {
1924 req
->r_args
.setattr
.size
= cpu_to_le64(attr
->ia_size
);
1925 req
->r_args
.setattr
.old_size
=
1926 cpu_to_le64(inode
->i_size
);
1927 mask
|= CEPH_SETATTR_SIZE
;
1928 release
|= CEPH_CAP_FILE_SHARED
| CEPH_CAP_FILE_RD
|
1933 /* these do nothing */
1934 if (ia_valid
& ATTR_CTIME
) {
1935 bool only
= (ia_valid
& (ATTR_SIZE
|ATTR_MTIME
|ATTR_ATIME
|
1936 ATTR_MODE
|ATTR_UID
|ATTR_GID
)) == 0;
1937 dout("setattr %p ctime %ld.%ld -> %ld.%ld (%s)\n", inode
,
1938 inode
->i_ctime
.tv_sec
, inode
->i_ctime
.tv_nsec
,
1939 attr
->ia_ctime
.tv_sec
, attr
->ia_ctime
.tv_nsec
,
1940 only
? "ctime only" : "ignored");
1941 inode
->i_ctime
= attr
->ia_ctime
;
1944 * if kernel wants to dirty ctime but nothing else,
1945 * we need to choose a cap to dirty under, or do
1946 * a almost-no-op setattr
1948 if (issued
& CEPH_CAP_AUTH_EXCL
)
1949 dirtied
|= CEPH_CAP_AUTH_EXCL
;
1950 else if (issued
& CEPH_CAP_FILE_EXCL
)
1951 dirtied
|= CEPH_CAP_FILE_EXCL
;
1952 else if (issued
& CEPH_CAP_XATTR_EXCL
)
1953 dirtied
|= CEPH_CAP_XATTR_EXCL
;
1955 mask
|= CEPH_SETATTR_CTIME
;
1958 if (ia_valid
& ATTR_FILE
)
1959 dout("setattr %p ATTR_FILE ... hrm!\n", inode
);
1962 inode_dirty_flags
= __ceph_mark_dirty_caps(ci
, dirtied
,
1964 inode
->i_ctime
= CURRENT_TIME
;
1968 spin_unlock(&ci
->i_ceph_lock
);
1969 if (lock_snap_rwsem
)
1970 up_read(&mdsc
->snap_rwsem
);
1972 if (inode_dirty_flags
)
1973 __mark_inode_dirty(inode
, inode_dirty_flags
);
1975 if (ia_valid
& ATTR_MODE
) {
1976 err
= posix_acl_chmod(inode
, attr
->ia_mode
);
1982 req
->r_inode
= inode
;
1984 req
->r_inode_drop
= release
;
1985 req
->r_args
.setattr
.mask
= cpu_to_le32(mask
);
1986 req
->r_num_caps
= 1;
1987 err
= ceph_mdsc_do_request(mdsc
, NULL
, req
);
1989 dout("setattr %p result=%d (%s locally, %d remote)\n", inode
, err
,
1990 ceph_cap_string(dirtied
), mask
);
1992 ceph_mdsc_put_request(req
);
1993 if (mask
& CEPH_SETATTR_SIZE
)
1994 __ceph_do_pending_vmtruncate(inode
);
1995 ceph_free_cap_flush(prealloc_cf
);
1998 ceph_mdsc_put_request(req
);
1999 ceph_free_cap_flush(prealloc_cf
);
2004 * Verify that we have a lease on the given mask. If not,
2005 * do a getattr against an mds.
2007 int __ceph_do_getattr(struct inode
*inode
, struct page
*locked_page
,
2008 int mask
, bool force
)
2010 struct ceph_fs_client
*fsc
= ceph_sb_to_client(inode
->i_sb
);
2011 struct ceph_mds_client
*mdsc
= fsc
->mdsc
;
2012 struct ceph_mds_request
*req
;
2015 if (ceph_snap(inode
) == CEPH_SNAPDIR
) {
2016 dout("do_getattr inode %p SNAPDIR\n", inode
);
2020 dout("do_getattr inode %p mask %s mode 0%o\n",
2021 inode
, ceph_cap_string(mask
), inode
->i_mode
);
2022 if (!force
&& ceph_caps_issued_mask(ceph_inode(inode
), mask
, 1))
2025 req
= ceph_mdsc_create_request(mdsc
, CEPH_MDS_OP_GETATTR
, USE_ANY_MDS
);
2027 return PTR_ERR(req
);
2028 req
->r_inode
= inode
;
2030 req
->r_num_caps
= 1;
2031 req
->r_args
.getattr
.mask
= cpu_to_le32(mask
);
2032 req
->r_locked_page
= locked_page
;
2033 err
= ceph_mdsc_do_request(mdsc
, NULL
, req
);
2034 if (locked_page
&& err
== 0) {
2035 u64 inline_version
= req
->r_reply_info
.targeti
.inline_version
;
2036 if (inline_version
== 0) {
2037 /* the reply is supposed to contain inline data */
2039 } else if (inline_version
== CEPH_INLINE_NONE
) {
2042 err
= req
->r_reply_info
.targeti
.inline_len
;
2045 ceph_mdsc_put_request(req
);
2046 dout("do_getattr result=%d\n", err
);
2052 * Check inode permissions. We verify we have a valid value for
2053 * the AUTH cap, then call the generic handler.
2055 int ceph_permission(struct inode
*inode
, int mask
)
2059 if (mask
& MAY_NOT_BLOCK
)
2062 err
= ceph_do_getattr(inode
, CEPH_CAP_AUTH_SHARED
, false);
2065 err
= generic_permission(inode
, mask
);
2070 * Get all attributes. Hopefully somedata we'll have a statlite()
2071 * and can limit the fields we require to be accurate.
2073 int ceph_getattr(struct vfsmount
*mnt
, struct dentry
*dentry
,
2076 struct inode
*inode
= d_inode(dentry
);
2077 struct ceph_inode_info
*ci
= ceph_inode(inode
);
2080 err
= ceph_do_getattr(inode
, CEPH_STAT_CAP_INODE_ALL
, false);
2082 generic_fillattr(inode
, stat
);
2083 stat
->ino
= ceph_translate_ino(inode
->i_sb
, inode
->i_ino
);
2084 if (ceph_snap(inode
) != CEPH_NOSNAP
)
2085 stat
->dev
= ceph_snap(inode
);
2088 if (S_ISDIR(inode
->i_mode
)) {
2089 if (ceph_test_mount_opt(ceph_sb_to_client(inode
->i_sb
),
2091 stat
->size
= ci
->i_rbytes
;
2093 stat
->size
= ci
->i_files
+ ci
->i_subdirs
;
2095 stat
->blksize
= 65536;