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/xattr.h>
12 #include <linux/posix_acl.h>
13 #include <linux/random.h>
14 #include <linux/sort.h>
17 #include "mds_client.h"
19 #include <linux/ceph/decode.h>
22 * Ceph inode operations
24 * Implement basic inode helpers (get, alloc) and inode ops (getattr,
25 * setattr, etc.), xattr helpers, and helpers for assimilating
26 * metadata returned by the MDS into our cache.
28 * Also define helpers for doing asynchronous writeback, invalidation,
29 * and truncation for the benefit of those who can't afford to block
30 * (typically because they are in the message handler path).
33 static const struct inode_operations ceph_symlink_iops
;
35 static void ceph_invalidate_work(struct work_struct
*work
);
36 static void ceph_writeback_work(struct work_struct
*work
);
37 static void ceph_vmtruncate_work(struct work_struct
*work
);
40 * find or create an inode, given the ceph ino number
42 static int ceph_set_ino_cb(struct inode
*inode
, void *data
)
44 ceph_inode(inode
)->i_vino
= *(struct ceph_vino
*)data
;
45 inode
->i_ino
= ceph_vino_to_ino(*(struct ceph_vino
*)data
);
49 struct inode
*ceph_get_inode(struct super_block
*sb
, struct ceph_vino vino
)
52 ino_t t
= ceph_vino_to_ino(vino
);
54 inode
= iget5_locked(sb
, t
, ceph_ino_compare
, ceph_set_ino_cb
, &vino
);
56 return ERR_PTR(-ENOMEM
);
57 if (inode
->i_state
& I_NEW
) {
58 dout("get_inode created new inode %p %llx.%llx ino %llx\n",
59 inode
, ceph_vinop(inode
), (u64
)inode
->i_ino
);
60 unlock_new_inode(inode
);
63 dout("get_inode on %lu=%llx.%llx got %p\n", inode
->i_ino
, vino
.ino
,
69 * get/constuct snapdir inode for a given directory
71 struct inode
*ceph_get_snapdir(struct inode
*parent
)
73 struct ceph_vino vino
= {
74 .ino
= ceph_ino(parent
),
77 struct inode
*inode
= ceph_get_inode(parent
->i_sb
, vino
);
78 struct ceph_inode_info
*ci
= ceph_inode(inode
);
80 BUG_ON(!S_ISDIR(parent
->i_mode
));
83 inode
->i_mode
= parent
->i_mode
;
84 inode
->i_uid
= parent
->i_uid
;
85 inode
->i_gid
= parent
->i_gid
;
86 inode
->i_op
= &ceph_snapdir_iops
;
87 inode
->i_fop
= &ceph_snapdir_fops
;
88 ci
->i_snap_caps
= CEPH_CAP_PIN
; /* so we can open */
93 const struct inode_operations ceph_file_iops
= {
94 .permission
= ceph_permission
,
95 .setattr
= ceph_setattr
,
96 .getattr
= ceph_getattr
,
97 .listxattr
= ceph_listxattr
,
98 .get_acl
= ceph_get_acl
,
99 .set_acl
= ceph_set_acl
,
104 * We use a 'frag tree' to keep track of the MDS's directory fragments
105 * for a given inode (usually there is just a single fragment). We
106 * need to know when a child frag is delegated to a new MDS, or when
107 * it is flagged as replicated, so we can direct our requests
112 * find/create a frag in the tree
114 static struct ceph_inode_frag
*__get_or_create_frag(struct ceph_inode_info
*ci
,
118 struct rb_node
*parent
= NULL
;
119 struct ceph_inode_frag
*frag
;
122 p
= &ci
->i_fragtree
.rb_node
;
125 frag
= rb_entry(parent
, struct ceph_inode_frag
, node
);
126 c
= ceph_frag_compare(f
, frag
->frag
);
135 frag
= kmalloc(sizeof(*frag
), GFP_NOFS
);
137 pr_err("__get_or_create_frag ENOMEM on %p %llx.%llx "
138 "frag %x\n", &ci
->vfs_inode
,
139 ceph_vinop(&ci
->vfs_inode
), f
);
140 return ERR_PTR(-ENOMEM
);
147 rb_link_node(&frag
->node
, parent
, p
);
148 rb_insert_color(&frag
->node
, &ci
->i_fragtree
);
150 dout("get_or_create_frag added %llx.%llx frag %x\n",
151 ceph_vinop(&ci
->vfs_inode
), f
);
156 * find a specific frag @f
158 struct ceph_inode_frag
*__ceph_find_frag(struct ceph_inode_info
*ci
, u32 f
)
160 struct rb_node
*n
= ci
->i_fragtree
.rb_node
;
163 struct ceph_inode_frag
*frag
=
164 rb_entry(n
, struct ceph_inode_frag
, node
);
165 int c
= ceph_frag_compare(f
, frag
->frag
);
177 * Choose frag containing the given value @v. If @pfrag is
178 * specified, copy the frag delegation info to the caller if
181 static u32
__ceph_choose_frag(struct ceph_inode_info
*ci
, u32 v
,
182 struct ceph_inode_frag
*pfrag
, int *found
)
184 u32 t
= ceph_frag_make(0, 0);
185 struct ceph_inode_frag
*frag
;
193 WARN_ON(!ceph_frag_contains_value(t
, v
));
194 frag
= __ceph_find_frag(ci
, t
);
196 break; /* t is a leaf */
197 if (frag
->split_by
== 0) {
199 memcpy(pfrag
, frag
, sizeof(*pfrag
));
206 nway
= 1 << frag
->split_by
;
207 dout("choose_frag(%x) %x splits by %d (%d ways)\n", v
, t
,
208 frag
->split_by
, nway
);
209 for (i
= 0; i
< nway
; i
++) {
210 n
= ceph_frag_make_child(t
, frag
->split_by
, i
);
211 if (ceph_frag_contains_value(n
, v
)) {
218 dout("choose_frag(%x) = %x\n", v
, t
);
223 u32
ceph_choose_frag(struct ceph_inode_info
*ci
, u32 v
,
224 struct ceph_inode_frag
*pfrag
, int *found
)
227 mutex_lock(&ci
->i_fragtree_mutex
);
228 ret
= __ceph_choose_frag(ci
, v
, pfrag
, found
);
229 mutex_unlock(&ci
->i_fragtree_mutex
);
234 * Process dirfrag (delegation) info from the mds. Include leaf
235 * fragment in tree ONLY if ndist > 0. Otherwise, only
236 * branches/splits are included in i_fragtree)
238 static int ceph_fill_dirfrag(struct inode
*inode
,
239 struct ceph_mds_reply_dirfrag
*dirinfo
)
241 struct ceph_inode_info
*ci
= ceph_inode(inode
);
242 struct ceph_inode_frag
*frag
;
243 u32 id
= le32_to_cpu(dirinfo
->frag
);
244 int mds
= le32_to_cpu(dirinfo
->auth
);
245 int ndist
= le32_to_cpu(dirinfo
->ndist
);
250 spin_lock(&ci
->i_ceph_lock
);
252 diri_auth
= ci
->i_auth_cap
->mds
;
253 spin_unlock(&ci
->i_ceph_lock
);
255 if (mds
== -1) /* CDIR_AUTH_PARENT */
258 mutex_lock(&ci
->i_fragtree_mutex
);
259 if (ndist
== 0 && mds
== diri_auth
) {
260 /* no delegation info needed. */
261 frag
= __ceph_find_frag(ci
, id
);
264 if (frag
->split_by
== 0) {
265 /* tree leaf, remove */
266 dout("fill_dirfrag removed %llx.%llx frag %x"
267 " (no ref)\n", ceph_vinop(inode
), id
);
268 rb_erase(&frag
->node
, &ci
->i_fragtree
);
271 /* tree branch, keep and clear */
272 dout("fill_dirfrag cleared %llx.%llx frag %x"
273 " referral\n", ceph_vinop(inode
), id
);
281 /* find/add this frag to store mds delegation info */
282 frag
= __get_or_create_frag(ci
, id
);
284 /* this is not the end of the world; we can continue
285 with bad/inaccurate delegation info */
286 pr_err("fill_dirfrag ENOMEM on mds ref %llx.%llx fg %x\n",
287 ceph_vinop(inode
), le32_to_cpu(dirinfo
->frag
));
293 frag
->ndist
= min_t(u32
, ndist
, CEPH_MAX_DIRFRAG_REP
);
294 for (i
= 0; i
< frag
->ndist
; i
++)
295 frag
->dist
[i
] = le32_to_cpu(dirinfo
->dist
[i
]);
296 dout("fill_dirfrag %llx.%llx frag %x ndist=%d\n",
297 ceph_vinop(inode
), frag
->frag
, frag
->ndist
);
300 mutex_unlock(&ci
->i_fragtree_mutex
);
304 static int frag_tree_split_cmp(const void *l
, const void *r
)
306 struct ceph_frag_tree_split
*ls
= (struct ceph_frag_tree_split
*)l
;
307 struct ceph_frag_tree_split
*rs
= (struct ceph_frag_tree_split
*)r
;
308 return ceph_frag_compare(le32_to_cpu(ls
->frag
),
309 le32_to_cpu(rs
->frag
));
312 static bool is_frag_child(u32 f
, struct ceph_inode_frag
*frag
)
315 return f
== ceph_frag_make(0, 0);
316 if (ceph_frag_bits(f
) != ceph_frag_bits(frag
->frag
) + frag
->split_by
)
318 return ceph_frag_contains_value(frag
->frag
, ceph_frag_value(f
));
321 static int ceph_fill_fragtree(struct inode
*inode
,
322 struct ceph_frag_tree_head
*fragtree
,
323 struct ceph_mds_reply_dirfrag
*dirinfo
)
325 struct ceph_inode_info
*ci
= ceph_inode(inode
);
326 struct ceph_inode_frag
*frag
, *prev_frag
= NULL
;
327 struct rb_node
*rb_node
;
328 unsigned i
, split_by
, nsplits
;
332 mutex_lock(&ci
->i_fragtree_mutex
);
333 nsplits
= le32_to_cpu(fragtree
->nsplits
);
334 if (nsplits
!= ci
->i_fragtree_nsplits
) {
336 } else if (nsplits
) {
337 i
= prandom_u32() % nsplits
;
338 id
= le32_to_cpu(fragtree
->splits
[i
].frag
);
339 if (!__ceph_find_frag(ci
, id
))
341 } else if (!RB_EMPTY_ROOT(&ci
->i_fragtree
)) {
342 rb_node
= rb_first(&ci
->i_fragtree
);
343 frag
= rb_entry(rb_node
, struct ceph_inode_frag
, node
);
344 if (frag
->frag
!= ceph_frag_make(0, 0) || rb_next(rb_node
))
347 if (!update
&& dirinfo
) {
348 id
= le32_to_cpu(dirinfo
->frag
);
349 if (id
!= __ceph_choose_frag(ci
, id
, NULL
, NULL
))
356 sort(fragtree
->splits
, nsplits
, sizeof(fragtree
->splits
[0]),
357 frag_tree_split_cmp
, NULL
);
360 dout("fill_fragtree %llx.%llx\n", ceph_vinop(inode
));
361 rb_node
= rb_first(&ci
->i_fragtree
);
362 for (i
= 0; i
< nsplits
; i
++) {
363 id
= le32_to_cpu(fragtree
->splits
[i
].frag
);
364 split_by
= le32_to_cpu(fragtree
->splits
[i
].by
);
365 if (split_by
== 0 || ceph_frag_bits(id
) + split_by
> 24) {
366 pr_err("fill_fragtree %llx.%llx invalid split %d/%u, "
367 "frag %x split by %d\n", ceph_vinop(inode
),
368 i
, nsplits
, id
, split_by
);
373 frag
= rb_entry(rb_node
, struct ceph_inode_frag
, node
);
374 if (ceph_frag_compare(frag
->frag
, id
) >= 0) {
375 if (frag
->frag
!= id
)
378 rb_node
= rb_next(rb_node
);
381 rb_node
= rb_next(rb_node
);
382 /* delete stale split/leaf node */
383 if (frag
->split_by
> 0 ||
384 !is_frag_child(frag
->frag
, prev_frag
)) {
385 rb_erase(&frag
->node
, &ci
->i_fragtree
);
386 if (frag
->split_by
> 0)
387 ci
->i_fragtree_nsplits
--;
393 frag
= __get_or_create_frag(ci
, id
);
397 if (frag
->split_by
== 0)
398 ci
->i_fragtree_nsplits
++;
399 frag
->split_by
= split_by
;
400 dout(" frag %x split by %d\n", frag
->frag
, frag
->split_by
);
404 frag
= rb_entry(rb_node
, struct ceph_inode_frag
, node
);
405 rb_node
= rb_next(rb_node
);
406 /* delete stale split/leaf node */
407 if (frag
->split_by
> 0 ||
408 !is_frag_child(frag
->frag
, prev_frag
)) {
409 rb_erase(&frag
->node
, &ci
->i_fragtree
);
410 if (frag
->split_by
> 0)
411 ci
->i_fragtree_nsplits
--;
416 mutex_unlock(&ci
->i_fragtree_mutex
);
421 * initialize a newly allocated inode.
423 struct inode
*ceph_alloc_inode(struct super_block
*sb
)
425 struct ceph_inode_info
*ci
;
428 ci
= kmem_cache_alloc(ceph_inode_cachep
, GFP_NOFS
);
432 dout("alloc_inode %p\n", &ci
->vfs_inode
);
434 spin_lock_init(&ci
->i_ceph_lock
);
437 ci
->i_inline_version
= 0;
438 ci
->i_time_warp_seq
= 0;
439 ci
->i_ceph_flags
= 0;
440 atomic64_set(&ci
->i_ordered_count
, 1);
441 atomic64_set(&ci
->i_release_count
, 1);
442 atomic64_set(&ci
->i_complete_seq
[0], 0);
443 atomic64_set(&ci
->i_complete_seq
[1], 0);
444 ci
->i_symlink
= NULL
;
446 memset(&ci
->i_dir_layout
, 0, sizeof(ci
->i_dir_layout
));
447 RCU_INIT_POINTER(ci
->i_layout
.pool_ns
, NULL
);
449 ci
->i_fragtree
= RB_ROOT
;
450 mutex_init(&ci
->i_fragtree_mutex
);
452 ci
->i_xattrs
.blob
= NULL
;
453 ci
->i_xattrs
.prealloc_blob
= NULL
;
454 ci
->i_xattrs
.dirty
= false;
455 ci
->i_xattrs
.index
= RB_ROOT
;
456 ci
->i_xattrs
.count
= 0;
457 ci
->i_xattrs
.names_size
= 0;
458 ci
->i_xattrs
.vals_size
= 0;
459 ci
->i_xattrs
.version
= 0;
460 ci
->i_xattrs
.index_version
= 0;
462 ci
->i_caps
= RB_ROOT
;
463 ci
->i_auth_cap
= NULL
;
464 ci
->i_dirty_caps
= 0;
465 ci
->i_flushing_caps
= 0;
466 INIT_LIST_HEAD(&ci
->i_dirty_item
);
467 INIT_LIST_HEAD(&ci
->i_flushing_item
);
468 ci
->i_prealloc_cap_flush
= NULL
;
469 INIT_LIST_HEAD(&ci
->i_cap_flush_list
);
470 init_waitqueue_head(&ci
->i_cap_wq
);
471 ci
->i_hold_caps_min
= 0;
472 ci
->i_hold_caps_max
= 0;
473 INIT_LIST_HEAD(&ci
->i_cap_delay_list
);
474 INIT_LIST_HEAD(&ci
->i_cap_snaps
);
475 ci
->i_head_snapc
= NULL
;
478 for (i
= 0; i
< CEPH_FILE_MODE_BITS
; i
++)
479 ci
->i_nr_by_mode
[i
] = 0;
481 mutex_init(&ci
->i_truncate_mutex
);
482 ci
->i_truncate_seq
= 0;
483 ci
->i_truncate_size
= 0;
484 ci
->i_truncate_pending
= 0;
487 ci
->i_reported_size
= 0;
488 ci
->i_wanted_max_size
= 0;
489 ci
->i_requested_max_size
= 0;
493 ci
->i_rdcache_ref
= 0;
496 ci
->i_wrbuffer_ref
= 0;
497 ci
->i_wrbuffer_ref_head
= 0;
498 ci
->i_shared_gen
= 0;
499 ci
->i_rdcache_gen
= 0;
500 ci
->i_rdcache_revoking
= 0;
502 INIT_LIST_HEAD(&ci
->i_unsafe_writes
);
503 INIT_LIST_HEAD(&ci
->i_unsafe_dirops
);
504 INIT_LIST_HEAD(&ci
->i_unsafe_iops
);
505 spin_lock_init(&ci
->i_unsafe_lock
);
507 ci
->i_snap_realm
= NULL
;
508 INIT_LIST_HEAD(&ci
->i_snap_realm_item
);
509 INIT_LIST_HEAD(&ci
->i_snap_flush_item
);
511 INIT_WORK(&ci
->i_wb_work
, ceph_writeback_work
);
512 INIT_WORK(&ci
->i_pg_inv_work
, ceph_invalidate_work
);
514 INIT_WORK(&ci
->i_vmtruncate_work
, ceph_vmtruncate_work
);
516 ceph_fscache_inode_init(ci
);
518 return &ci
->vfs_inode
;
521 static void ceph_i_callback(struct rcu_head
*head
)
523 struct inode
*inode
= container_of(head
, struct inode
, i_rcu
);
524 struct ceph_inode_info
*ci
= ceph_inode(inode
);
526 kmem_cache_free(ceph_inode_cachep
, ci
);
529 void ceph_destroy_inode(struct inode
*inode
)
531 struct ceph_inode_info
*ci
= ceph_inode(inode
);
532 struct ceph_inode_frag
*frag
;
535 dout("destroy_inode %p ino %llx.%llx\n", inode
, ceph_vinop(inode
));
537 ceph_fscache_unregister_inode_cookie(ci
);
539 ceph_queue_caps_release(inode
);
542 * we may still have a snap_realm reference if there are stray
543 * caps in i_snap_caps.
545 if (ci
->i_snap_realm
) {
546 struct ceph_mds_client
*mdsc
=
547 ceph_sb_to_client(ci
->vfs_inode
.i_sb
)->mdsc
;
548 struct ceph_snap_realm
*realm
= ci
->i_snap_realm
;
550 dout(" dropping residual ref to snap realm %p\n", realm
);
551 spin_lock(&realm
->inodes_with_caps_lock
);
552 list_del_init(&ci
->i_snap_realm_item
);
553 spin_unlock(&realm
->inodes_with_caps_lock
);
554 ceph_put_snap_realm(mdsc
, realm
);
557 kfree(ci
->i_symlink
);
558 while ((n
= rb_first(&ci
->i_fragtree
)) != NULL
) {
559 frag
= rb_entry(n
, struct ceph_inode_frag
, node
);
560 rb_erase(n
, &ci
->i_fragtree
);
563 ci
->i_fragtree_nsplits
= 0;
565 __ceph_destroy_xattrs(ci
);
566 if (ci
->i_xattrs
.blob
)
567 ceph_buffer_put(ci
->i_xattrs
.blob
);
568 if (ci
->i_xattrs
.prealloc_blob
)
569 ceph_buffer_put(ci
->i_xattrs
.prealloc_blob
);
571 ceph_put_string(rcu_dereference_raw(ci
->i_layout
.pool_ns
));
573 call_rcu(&inode
->i_rcu
, ceph_i_callback
);
576 int ceph_drop_inode(struct inode
*inode
)
579 * Positve dentry and corresponding inode are always accompanied
580 * in MDS reply. So no need to keep inode in the cache after
581 * dropping all its aliases.
586 void ceph_evict_inode(struct inode
*inode
)
588 /* wait unsafe sync writes */
589 ceph_sync_write_wait(inode
);
590 truncate_inode_pages_final(&inode
->i_data
);
594 static inline blkcnt_t
calc_inode_blocks(u64 size
)
596 return (size
+ (1<<9) - 1) >> 9;
600 * Helpers to fill in size, ctime, mtime, and atime. We have to be
601 * careful because either the client or MDS may have more up to date
602 * info, depending on which capabilities are held, and whether
603 * time_warp_seq or truncate_seq have increased. (Ordinarily, mtime
604 * and size are monotonically increasing, except when utimes() or
605 * truncate() increments the corresponding _seq values.)
607 int ceph_fill_file_size(struct inode
*inode
, int issued
,
608 u32 truncate_seq
, u64 truncate_size
, u64 size
)
610 struct ceph_inode_info
*ci
= ceph_inode(inode
);
613 if (ceph_seq_cmp(truncate_seq
, ci
->i_truncate_seq
) > 0 ||
614 (truncate_seq
== ci
->i_truncate_seq
&& size
> inode
->i_size
)) {
615 dout("size %lld -> %llu\n", inode
->i_size
, size
);
616 if (size
> 0 && S_ISDIR(inode
->i_mode
)) {
617 pr_err("fill_file_size non-zero size for directory\n");
620 i_size_write(inode
, size
);
621 inode
->i_blocks
= calc_inode_blocks(size
);
622 ci
->i_reported_size
= size
;
623 if (truncate_seq
!= ci
->i_truncate_seq
) {
624 dout("truncate_seq %u -> %u\n",
625 ci
->i_truncate_seq
, truncate_seq
);
626 ci
->i_truncate_seq
= truncate_seq
;
628 /* the MDS should have revoked these caps */
629 WARN_ON_ONCE(issued
& (CEPH_CAP_FILE_EXCL
|
632 CEPH_CAP_FILE_LAZYIO
));
634 * If we hold relevant caps, or in the case where we're
635 * not the only client referencing this file and we
636 * don't hold those caps, then we need to check whether
637 * the file is either opened or mmaped
639 if ((issued
& (CEPH_CAP_FILE_CACHE
|
640 CEPH_CAP_FILE_BUFFER
)) ||
641 mapping_mapped(inode
->i_mapping
) ||
642 __ceph_caps_file_wanted(ci
)) {
643 ci
->i_truncate_pending
++;
648 if (ceph_seq_cmp(truncate_seq
, ci
->i_truncate_seq
) >= 0 &&
649 ci
->i_truncate_size
!= truncate_size
) {
650 dout("truncate_size %lld -> %llu\n", ci
->i_truncate_size
,
652 ci
->i_truncate_size
= truncate_size
;
656 ceph_fscache_invalidate(inode
);
661 void ceph_fill_file_time(struct inode
*inode
, int issued
,
662 u64 time_warp_seq
, struct timespec
*ctime
,
663 struct timespec
*mtime
, struct timespec
*atime
)
665 struct ceph_inode_info
*ci
= ceph_inode(inode
);
668 if (issued
& (CEPH_CAP_FILE_EXCL
|
670 CEPH_CAP_FILE_BUFFER
|
672 CEPH_CAP_XATTR_EXCL
)) {
673 if (timespec_compare(ctime
, &inode
->i_ctime
) > 0) {
674 dout("ctime %ld.%09ld -> %ld.%09ld inc w/ cap\n",
675 inode
->i_ctime
.tv_sec
, inode
->i_ctime
.tv_nsec
,
676 ctime
->tv_sec
, ctime
->tv_nsec
);
677 inode
->i_ctime
= *ctime
;
679 if (ceph_seq_cmp(time_warp_seq
, ci
->i_time_warp_seq
) > 0) {
680 /* the MDS did a utimes() */
681 dout("mtime %ld.%09ld -> %ld.%09ld "
683 inode
->i_mtime
.tv_sec
, inode
->i_mtime
.tv_nsec
,
684 mtime
->tv_sec
, mtime
->tv_nsec
,
685 ci
->i_time_warp_seq
, (int)time_warp_seq
);
687 inode
->i_mtime
= *mtime
;
688 inode
->i_atime
= *atime
;
689 ci
->i_time_warp_seq
= time_warp_seq
;
690 } else if (time_warp_seq
== ci
->i_time_warp_seq
) {
691 /* nobody did utimes(); take the max */
692 if (timespec_compare(mtime
, &inode
->i_mtime
) > 0) {
693 dout("mtime %ld.%09ld -> %ld.%09ld inc\n",
694 inode
->i_mtime
.tv_sec
,
695 inode
->i_mtime
.tv_nsec
,
696 mtime
->tv_sec
, mtime
->tv_nsec
);
697 inode
->i_mtime
= *mtime
;
699 if (timespec_compare(atime
, &inode
->i_atime
) > 0) {
700 dout("atime %ld.%09ld -> %ld.%09ld inc\n",
701 inode
->i_atime
.tv_sec
,
702 inode
->i_atime
.tv_nsec
,
703 atime
->tv_sec
, atime
->tv_nsec
);
704 inode
->i_atime
= *atime
;
706 } else if (issued
& CEPH_CAP_FILE_EXCL
) {
707 /* we did a utimes(); ignore mds values */
712 /* we have no write|excl caps; whatever the MDS says is true */
713 if (ceph_seq_cmp(time_warp_seq
, ci
->i_time_warp_seq
) >= 0) {
714 inode
->i_ctime
= *ctime
;
715 inode
->i_mtime
= *mtime
;
716 inode
->i_atime
= *atime
;
717 ci
->i_time_warp_seq
= time_warp_seq
;
722 if (warn
) /* time_warp_seq shouldn't go backwards */
723 dout("%p mds time_warp_seq %llu < %u\n",
724 inode
, time_warp_seq
, ci
->i_time_warp_seq
);
728 * Populate an inode based on info from mds. May be called on new or
731 static int fill_inode(struct inode
*inode
, struct page
*locked_page
,
732 struct ceph_mds_reply_info_in
*iinfo
,
733 struct ceph_mds_reply_dirfrag
*dirinfo
,
734 struct ceph_mds_session
*session
,
735 unsigned long ttl_from
, int cap_fmode
,
736 struct ceph_cap_reservation
*caps_reservation
)
738 struct ceph_mds_client
*mdsc
= ceph_inode_to_client(inode
)->mdsc
;
739 struct ceph_mds_reply_inode
*info
= iinfo
->in
;
740 struct ceph_inode_info
*ci
= ceph_inode(inode
);
741 int issued
= 0, implemented
, new_issued
;
742 struct timespec mtime
, atime
, ctime
;
743 struct ceph_buffer
*xattr_blob
= NULL
;
744 struct ceph_string
*pool_ns
= NULL
;
745 struct ceph_cap
*new_cap
= NULL
;
748 bool queue_trunc
= false;
749 bool new_version
= false;
750 bool fill_inline
= false;
752 dout("fill_inode %p ino %llx.%llx v %llu had %llu\n",
753 inode
, ceph_vinop(inode
), le64_to_cpu(info
->version
),
756 /* prealloc new cap struct */
757 if (info
->cap
.caps
&& ceph_snap(inode
) == CEPH_NOSNAP
)
758 new_cap
= ceph_get_cap(mdsc
, caps_reservation
);
761 * prealloc xattr data, if it looks like we'll need it. only
762 * if len > 4 (meaning there are actually xattrs; the first 4
763 * bytes are the xattr count).
765 if (iinfo
->xattr_len
> 4) {
766 xattr_blob
= ceph_buffer_new(iinfo
->xattr_len
, GFP_NOFS
);
768 pr_err("fill_inode ENOMEM xattr blob %d bytes\n",
772 if (iinfo
->pool_ns_len
> 0)
773 pool_ns
= ceph_find_or_create_string(iinfo
->pool_ns_data
,
776 spin_lock(&ci
->i_ceph_lock
);
779 * provided version will be odd if inode value is projected,
780 * even if stable. skip the update if we have newer stable
781 * info (ours>=theirs, e.g. due to racing mds replies), unless
782 * we are getting projected (unstable) info (in which case the
783 * version is odd, and we want ours>theirs).
789 if (ci
->i_version
== 0 ||
790 ((info
->cap
.flags
& CEPH_CAP_FLAG_AUTH
) &&
791 le64_to_cpu(info
->version
) > (ci
->i_version
& ~1)))
794 issued
= __ceph_caps_issued(ci
, &implemented
);
795 issued
|= implemented
| __ceph_caps_dirty(ci
);
796 new_issued
= ~issued
& le32_to_cpu(info
->cap
.caps
);
799 ci
->i_version
= le64_to_cpu(info
->version
);
801 inode
->i_rdev
= le32_to_cpu(info
->rdev
);
802 inode
->i_blkbits
= fls(le32_to_cpu(info
->layout
.fl_stripe_unit
)) - 1;
804 if ((new_version
|| (new_issued
& CEPH_CAP_AUTH_SHARED
)) &&
805 (issued
& CEPH_CAP_AUTH_EXCL
) == 0) {
806 inode
->i_mode
= le32_to_cpu(info
->mode
);
807 inode
->i_uid
= make_kuid(&init_user_ns
, le32_to_cpu(info
->uid
));
808 inode
->i_gid
= make_kgid(&init_user_ns
, le32_to_cpu(info
->gid
));
809 dout("%p mode 0%o uid.gid %d.%d\n", inode
, inode
->i_mode
,
810 from_kuid(&init_user_ns
, inode
->i_uid
),
811 from_kgid(&init_user_ns
, inode
->i_gid
));
814 if ((new_version
|| (new_issued
& CEPH_CAP_LINK_SHARED
)) &&
815 (issued
& CEPH_CAP_LINK_EXCL
) == 0)
816 set_nlink(inode
, le32_to_cpu(info
->nlink
));
818 if (new_version
|| (new_issued
& CEPH_CAP_ANY_RD
)) {
819 /* be careful with mtime, atime, size */
820 ceph_decode_timespec(&atime
, &info
->atime
);
821 ceph_decode_timespec(&mtime
, &info
->mtime
);
822 ceph_decode_timespec(&ctime
, &info
->ctime
);
823 ceph_fill_file_time(inode
, issued
,
824 le32_to_cpu(info
->time_warp_seq
),
825 &ctime
, &mtime
, &atime
);
829 (new_issued
& (CEPH_CAP_ANY_FILE_RD
| CEPH_CAP_ANY_FILE_WR
))) {
830 s64 old_pool
= ci
->i_layout
.pool_id
;
831 struct ceph_string
*old_ns
;
833 ceph_file_layout_from_legacy(&ci
->i_layout
, &info
->layout
);
834 old_ns
= rcu_dereference_protected(ci
->i_layout
.pool_ns
,
835 lockdep_is_held(&ci
->i_ceph_lock
));
836 rcu_assign_pointer(ci
->i_layout
.pool_ns
, pool_ns
);
838 if (ci
->i_layout
.pool_id
!= old_pool
|| pool_ns
!= old_ns
)
839 ci
->i_ceph_flags
&= ~CEPH_I_POOL_PERM
;
843 queue_trunc
= ceph_fill_file_size(inode
, issued
,
844 le32_to_cpu(info
->truncate_seq
),
845 le64_to_cpu(info
->truncate_size
),
846 le64_to_cpu(info
->size
));
847 /* only update max_size on auth cap */
848 if ((info
->cap
.flags
& CEPH_CAP_FLAG_AUTH
) &&
849 ci
->i_max_size
!= le64_to_cpu(info
->max_size
)) {
850 dout("max_size %lld -> %llu\n", ci
->i_max_size
,
851 le64_to_cpu(info
->max_size
));
852 ci
->i_max_size
= le64_to_cpu(info
->max_size
);
857 /* note that if i_xattrs.len <= 4, i_xattrs.data will still be NULL. */
858 if ((ci
->i_xattrs
.version
== 0 || !(issued
& CEPH_CAP_XATTR_EXCL
)) &&
859 le64_to_cpu(info
->xattr_version
) > ci
->i_xattrs
.version
) {
860 if (ci
->i_xattrs
.blob
)
861 ceph_buffer_put(ci
->i_xattrs
.blob
);
862 ci
->i_xattrs
.blob
= xattr_blob
;
864 memcpy(ci
->i_xattrs
.blob
->vec
.iov_base
,
865 iinfo
->xattr_data
, iinfo
->xattr_len
);
866 ci
->i_xattrs
.version
= le64_to_cpu(info
->xattr_version
);
867 ceph_forget_all_cached_acls(inode
);
871 inode
->i_mapping
->a_ops
= &ceph_aops
;
873 switch (inode
->i_mode
& S_IFMT
) {
878 init_special_inode(inode
, inode
->i_mode
, inode
->i_rdev
);
879 inode
->i_op
= &ceph_file_iops
;
882 inode
->i_op
= &ceph_file_iops
;
883 inode
->i_fop
= &ceph_file_fops
;
886 inode
->i_op
= &ceph_symlink_iops
;
887 if (!ci
->i_symlink
) {
888 u32 symlen
= iinfo
->symlink_len
;
891 spin_unlock(&ci
->i_ceph_lock
);
893 if (symlen
!= i_size_read(inode
)) {
894 pr_err("fill_inode %llx.%llx BAD symlink "
895 "size %lld\n", ceph_vinop(inode
),
897 i_size_write(inode
, symlen
);
898 inode
->i_blocks
= calc_inode_blocks(symlen
);
902 sym
= kstrndup(iinfo
->symlink
, symlen
, GFP_NOFS
);
906 spin_lock(&ci
->i_ceph_lock
);
910 kfree(sym
); /* lost a race */
912 inode
->i_link
= ci
->i_symlink
;
915 inode
->i_op
= &ceph_dir_iops
;
916 inode
->i_fop
= &ceph_dir_fops
;
918 ci
->i_dir_layout
= iinfo
->dir_layout
;
920 ci
->i_files
= le64_to_cpu(info
->files
);
921 ci
->i_subdirs
= le64_to_cpu(info
->subdirs
);
922 ci
->i_rbytes
= le64_to_cpu(info
->rbytes
);
923 ci
->i_rfiles
= le64_to_cpu(info
->rfiles
);
924 ci
->i_rsubdirs
= le64_to_cpu(info
->rsubdirs
);
925 ceph_decode_timespec(&ci
->i_rctime
, &info
->rctime
);
928 pr_err("fill_inode %llx.%llx BAD mode 0%o\n",
929 ceph_vinop(inode
), inode
->i_mode
);
932 /* were we issued a capability? */
933 if (info
->cap
.caps
) {
934 if (ceph_snap(inode
) == CEPH_NOSNAP
) {
935 unsigned caps
= le32_to_cpu(info
->cap
.caps
);
936 ceph_add_cap(inode
, session
,
937 le64_to_cpu(info
->cap
.cap_id
),
939 le32_to_cpu(info
->cap
.wanted
),
940 le32_to_cpu(info
->cap
.seq
),
941 le32_to_cpu(info
->cap
.mseq
),
942 le64_to_cpu(info
->cap
.realm
),
943 info
->cap
.flags
, &new_cap
);
945 /* set dir completion flag? */
946 if (S_ISDIR(inode
->i_mode
) &&
947 ci
->i_files
== 0 && ci
->i_subdirs
== 0 &&
948 (caps
& CEPH_CAP_FILE_SHARED
) &&
949 (issued
& CEPH_CAP_FILE_EXCL
) == 0 &&
950 !__ceph_dir_is_complete(ci
)) {
951 dout(" marking %p complete (empty)\n", inode
);
952 i_size_write(inode
, 0);
953 __ceph_dir_set_complete(ci
,
954 atomic64_read(&ci
->i_release_count
),
955 atomic64_read(&ci
->i_ordered_count
));
960 dout(" %p got snap_caps %s\n", inode
,
961 ceph_cap_string(le32_to_cpu(info
->cap
.caps
)));
962 ci
->i_snap_caps
|= le32_to_cpu(info
->cap
.caps
);
964 __ceph_get_fmode(ci
, cap_fmode
);
966 } else if (cap_fmode
>= 0) {
967 pr_warn("mds issued no caps on %llx.%llx\n",
969 __ceph_get_fmode(ci
, cap_fmode
);
972 if (iinfo
->inline_version
> 0 &&
973 iinfo
->inline_version
>= ci
->i_inline_version
) {
974 int cache_caps
= CEPH_CAP_FILE_CACHE
| CEPH_CAP_FILE_LAZYIO
;
975 ci
->i_inline_version
= iinfo
->inline_version
;
976 if (ci
->i_inline_version
!= CEPH_INLINE_NONE
&&
978 (le32_to_cpu(info
->cap
.caps
) & cache_caps
)))
982 spin_unlock(&ci
->i_ceph_lock
);
985 ceph_fill_inline_data(inode
, locked_page
,
986 iinfo
->inline_data
, iinfo
->inline_len
);
989 wake_up_all(&ci
->i_cap_wq
);
991 /* queue truncate if we saw i_size decrease */
993 ceph_queue_vmtruncate(inode
);
995 /* populate frag tree */
996 if (S_ISDIR(inode
->i_mode
))
997 ceph_fill_fragtree(inode
, &info
->fragtree
, dirinfo
);
999 /* update delegation info? */
1001 ceph_fill_dirfrag(inode
, dirinfo
);
1006 ceph_put_cap(mdsc
, new_cap
);
1008 ceph_buffer_put(xattr_blob
);
1009 ceph_put_string(pool_ns
);
1014 * caller should hold session s_mutex.
1016 static void update_dentry_lease(struct dentry
*dentry
,
1017 struct ceph_mds_reply_lease
*lease
,
1018 struct ceph_mds_session
*session
,
1019 unsigned long from_time
)
1021 struct ceph_dentry_info
*di
= ceph_dentry(dentry
);
1022 long unsigned duration
= le32_to_cpu(lease
->duration_ms
);
1023 long unsigned ttl
= from_time
+ (duration
* HZ
) / 1000;
1024 long unsigned half_ttl
= from_time
+ (duration
* HZ
/ 2) / 1000;
1027 spin_lock(&dentry
->d_lock
);
1028 dout("update_dentry_lease %p duration %lu ms ttl %lu\n",
1029 dentry
, duration
, ttl
);
1031 /* make lease_rdcache_gen match directory */
1032 dir
= d_inode(dentry
->d_parent
);
1034 /* only track leases on regular dentries */
1035 if (ceph_snap(dir
) != CEPH_NOSNAP
)
1038 di
->lease_shared_gen
= ceph_inode(dir
)->i_shared_gen
;
1043 if (di
->lease_gen
== session
->s_cap_gen
&&
1044 time_before(ttl
, di
->time
))
1045 goto out_unlock
; /* we already have a newer lease. */
1047 if (di
->lease_session
&& di
->lease_session
!= session
)
1050 ceph_dentry_lru_touch(dentry
);
1052 if (!di
->lease_session
)
1053 di
->lease_session
= ceph_get_mds_session(session
);
1054 di
->lease_gen
= session
->s_cap_gen
;
1055 di
->lease_seq
= le32_to_cpu(lease
->seq
);
1056 di
->lease_renew_after
= half_ttl
;
1057 di
->lease_renew_from
= 0;
1060 spin_unlock(&dentry
->d_lock
);
1065 * splice a dentry to an inode.
1066 * caller must hold directory i_mutex for this to be safe.
1068 static struct dentry
*splice_dentry(struct dentry
*dn
, struct inode
*in
)
1070 struct dentry
*realdn
;
1072 BUG_ON(d_inode(dn
));
1074 /* dn must be unhashed */
1075 if (!d_unhashed(dn
))
1077 realdn
= d_splice_alias(in
, dn
);
1078 if (IS_ERR(realdn
)) {
1079 pr_err("splice_dentry error %ld %p inode %p ino %llx.%llx\n",
1080 PTR_ERR(realdn
), dn
, in
, ceph_vinop(in
));
1081 dn
= realdn
; /* note realdn contains the error */
1083 } else if (realdn
) {
1084 dout("dn %p (%d) spliced with %p (%d) "
1085 "inode %p ino %llx.%llx\n",
1087 realdn
, d_count(realdn
),
1088 d_inode(realdn
), ceph_vinop(d_inode(realdn
)));
1092 BUG_ON(!ceph_dentry(dn
));
1093 dout("dn %p attached to %p ino %llx.%llx\n",
1094 dn
, d_inode(dn
), ceph_vinop(d_inode(dn
)));
1101 * Incorporate results into the local cache. This is either just
1102 * one inode, or a directory, dentry, and possibly linked-to inode (e.g.,
1105 * A reply may contain
1106 * a directory inode along with a dentry.
1107 * and/or a target inode
1109 * Called with snap_rwsem (read).
1111 int ceph_fill_trace(struct super_block
*sb
, struct ceph_mds_request
*req
,
1112 struct ceph_mds_session
*session
)
1114 struct ceph_mds_reply_info_parsed
*rinfo
= &req
->r_reply_info
;
1115 struct inode
*in
= NULL
;
1116 struct ceph_vino vino
;
1117 struct ceph_fs_client
*fsc
= ceph_sb_to_client(sb
);
1120 dout("fill_trace %p is_dentry %d is_target %d\n", req
,
1121 rinfo
->head
->is_dentry
, rinfo
->head
->is_target
);
1127 * If we resend completed ops to a recovering mds, we get no
1128 * trace. Since that is very rare, pretend this is the case
1129 * to ensure the 'no trace' handlers in the callers behave.
1131 * Fill in inodes unconditionally to avoid breaking cap
1134 if (rinfo
->head
->op
& CEPH_MDS_OP_WRITE
) {
1135 pr_info("fill_trace faking empty trace on %lld %s\n",
1136 req
->r_tid
, ceph_mds_op_name(rinfo
->head
->op
));
1137 if (rinfo
->head
->is_dentry
) {
1138 rinfo
->head
->is_dentry
= 0;
1139 err
= fill_inode(req
->r_locked_dir
,
1140 &rinfo
->diri
, rinfo
->dirfrag
,
1141 session
, req
->r_request_started
, -1);
1143 if (rinfo
->head
->is_target
) {
1144 rinfo
->head
->is_target
= 0;
1145 ininfo
= rinfo
->targeti
.in
;
1146 vino
.ino
= le64_to_cpu(ininfo
->ino
);
1147 vino
.snap
= le64_to_cpu(ininfo
->snapid
);
1148 in
= ceph_get_inode(sb
, vino
);
1149 err
= fill_inode(in
, &rinfo
->targeti
, NULL
,
1150 session
, req
->r_request_started
,
1157 if (!rinfo
->head
->is_target
&& !rinfo
->head
->is_dentry
) {
1158 dout("fill_trace reply is empty!\n");
1159 if (rinfo
->head
->result
== 0 && req
->r_locked_dir
)
1160 ceph_invalidate_dir_request(req
);
1164 if (rinfo
->head
->is_dentry
) {
1165 struct inode
*dir
= req
->r_locked_dir
;
1168 err
= fill_inode(dir
, NULL
,
1169 &rinfo
->diri
, rinfo
->dirfrag
,
1170 session
, req
->r_request_started
, -1,
1171 &req
->r_caps_reservation
);
1178 if (dir
&& req
->r_op
== CEPH_MDS_OP_LOOKUPNAME
) {
1180 struct dentry
*dn
, *parent
;
1182 BUG_ON(!rinfo
->head
->is_target
);
1183 BUG_ON(req
->r_dentry
);
1185 parent
= d_find_any_alias(dir
);
1188 dname
.name
= rinfo
->dname
;
1189 dname
.len
= rinfo
->dname_len
;
1190 dname
.hash
= full_name_hash(parent
, dname
.name
, dname
.len
);
1191 vino
.ino
= le64_to_cpu(rinfo
->targeti
.in
->ino
);
1192 vino
.snap
= le64_to_cpu(rinfo
->targeti
.in
->snapid
);
1194 dn
= d_lookup(parent
, &dname
);
1195 dout("d_lookup on parent=%p name=%.*s got %p\n",
1196 parent
, dname
.len
, dname
.name
, dn
);
1199 dn
= d_alloc(parent
, &dname
);
1200 dout("d_alloc %p '%.*s' = %p\n", parent
,
1201 dname
.len
, dname
.name
, dn
);
1208 } else if (d_really_is_positive(dn
) &&
1209 (ceph_ino(d_inode(dn
)) != vino
.ino
||
1210 ceph_snap(d_inode(dn
)) != vino
.snap
)) {
1211 dout(" dn %p points to wrong inode %p\n",
1223 if (rinfo
->head
->is_target
) {
1224 vino
.ino
= le64_to_cpu(rinfo
->targeti
.in
->ino
);
1225 vino
.snap
= le64_to_cpu(rinfo
->targeti
.in
->snapid
);
1227 in
= ceph_get_inode(sb
, vino
);
1232 req
->r_target_inode
= in
;
1234 err
= fill_inode(in
, req
->r_locked_page
, &rinfo
->targeti
, NULL
,
1235 session
, req
->r_request_started
,
1236 (!req
->r_aborted
&& rinfo
->head
->result
== 0) ?
1238 &req
->r_caps_reservation
);
1240 pr_err("fill_inode badness %p %llx.%llx\n",
1241 in
, ceph_vinop(in
));
1247 * ignore null lease/binding on snapdir ENOENT, or else we
1248 * will have trouble splicing in the virtual snapdir later
1250 if (rinfo
->head
->is_dentry
&& !req
->r_aborted
&&
1251 req
->r_locked_dir
&&
1252 (rinfo
->head
->is_target
|| strncmp(req
->r_dentry
->d_name
.name
,
1253 fsc
->mount_options
->snapdir_name
,
1254 req
->r_dentry
->d_name
.len
))) {
1256 * lookup link rename : null -> possibly existing inode
1257 * mknod symlink mkdir : null -> new inode
1258 * unlink : linked -> null
1260 struct inode
*dir
= req
->r_locked_dir
;
1261 struct dentry
*dn
= req
->r_dentry
;
1262 bool have_dir_cap
, have_lease
;
1266 BUG_ON(d_inode(dn
->d_parent
) != dir
);
1267 BUG_ON(ceph_ino(dir
) !=
1268 le64_to_cpu(rinfo
->diri
.in
->ino
));
1269 BUG_ON(ceph_snap(dir
) !=
1270 le64_to_cpu(rinfo
->diri
.in
->snapid
));
1272 /* do we have a lease on the whole dir? */
1274 (le32_to_cpu(rinfo
->diri
.in
->cap
.caps
) &
1275 CEPH_CAP_FILE_SHARED
);
1277 /* do we have a dn lease? */
1278 have_lease
= have_dir_cap
||
1279 le32_to_cpu(rinfo
->dlease
->duration_ms
);
1281 dout("fill_trace no dentry lease or dir cap\n");
1284 if (req
->r_old_dentry
&& req
->r_op
== CEPH_MDS_OP_RENAME
) {
1285 struct inode
*olddir
= req
->r_old_dentry_dir
;
1288 dout(" src %p '%pd' dst %p '%pd'\n",
1292 dout("fill_trace doing d_move %p -> %p\n",
1293 req
->r_old_dentry
, dn
);
1295 /* d_move screws up sibling dentries' offsets */
1296 ceph_dir_clear_ordered(dir
);
1297 ceph_dir_clear_ordered(olddir
);
1299 d_move(req
->r_old_dentry
, dn
);
1300 dout(" src %p '%pd' dst %p '%pd'\n",
1305 /* ensure target dentry is invalidated, despite
1306 rehashing bug in vfs_rename_dir */
1307 ceph_invalidate_dentry_lease(dn
);
1309 dout("dn %p gets new offset %lld\n", req
->r_old_dentry
,
1310 ceph_dentry(req
->r_old_dentry
)->offset
);
1312 dn
= req
->r_old_dentry
; /* use old_dentry */
1316 if (!rinfo
->head
->is_target
) {
1317 dout("fill_trace null dentry\n");
1318 if (d_really_is_positive(dn
)) {
1319 ceph_dir_clear_ordered(dir
);
1320 dout("d_delete %p\n", dn
);
1323 if (have_lease
&& d_unhashed(dn
))
1325 update_dentry_lease(dn
, rinfo
->dlease
,
1327 req
->r_request_started
);
1332 /* attach proper inode */
1333 if (d_really_is_negative(dn
)) {
1334 ceph_dir_clear_ordered(dir
);
1336 dn
= splice_dentry(dn
, in
);
1341 req
->r_dentry
= dn
; /* may have spliced */
1342 } else if (d_really_is_positive(dn
) && d_inode(dn
) != in
) {
1343 dout(" %p links to %p %llx.%llx, not %llx.%llx\n",
1344 dn
, d_inode(dn
), ceph_vinop(d_inode(dn
)),
1351 update_dentry_lease(dn
, rinfo
->dlease
, session
,
1352 req
->r_request_started
);
1353 dout(" final dn %p\n", dn
);
1354 } else if (!req
->r_aborted
&&
1355 (req
->r_op
== CEPH_MDS_OP_LOOKUPSNAP
||
1356 req
->r_op
== CEPH_MDS_OP_MKSNAP
)) {
1357 struct dentry
*dn
= req
->r_dentry
;
1358 struct inode
*dir
= req
->r_locked_dir
;
1360 /* fill out a snapdir LOOKUPSNAP dentry */
1363 BUG_ON(ceph_snap(dir
) != CEPH_SNAPDIR
);
1364 dout(" linking snapped dir %p to dn %p\n", in
, dn
);
1365 ceph_dir_clear_ordered(dir
);
1367 dn
= splice_dentry(dn
, in
);
1372 req
->r_dentry
= dn
; /* may have spliced */
1375 dout("fill_trace done err=%d\n", err
);
1380 * Prepopulate our cache with readdir results, leases, etc.
1382 static int readdir_prepopulate_inodes_only(struct ceph_mds_request
*req
,
1383 struct ceph_mds_session
*session
)
1385 struct ceph_mds_reply_info_parsed
*rinfo
= &req
->r_reply_info
;
1388 for (i
= 0; i
< rinfo
->dir_nr
; i
++) {
1389 struct ceph_mds_reply_dir_entry
*rde
= rinfo
->dir_entries
+ i
;
1390 struct ceph_vino vino
;
1394 vino
.ino
= le64_to_cpu(rde
->inode
.in
->ino
);
1395 vino
.snap
= le64_to_cpu(rde
->inode
.in
->snapid
);
1397 in
= ceph_get_inode(req
->r_dentry
->d_sb
, vino
);
1400 dout("new_inode badness got %d\n", err
);
1403 rc
= fill_inode(in
, NULL
, &rde
->inode
, NULL
, session
,
1404 req
->r_request_started
, -1,
1405 &req
->r_caps_reservation
);
1407 pr_err("fill_inode badness on %p got %d\n", in
, rc
);
1416 void ceph_readdir_cache_release(struct ceph_readdir_cache_control
*ctl
)
1420 put_page(ctl
->page
);
1425 static int fill_readdir_cache(struct inode
*dir
, struct dentry
*dn
,
1426 struct ceph_readdir_cache_control
*ctl
,
1427 struct ceph_mds_request
*req
)
1429 struct ceph_inode_info
*ci
= ceph_inode(dir
);
1430 unsigned nsize
= PAGE_SIZE
/ sizeof(struct dentry
*);
1431 unsigned idx
= ctl
->index
% nsize
;
1432 pgoff_t pgoff
= ctl
->index
/ nsize
;
1434 if (!ctl
->page
|| pgoff
!= page_index(ctl
->page
)) {
1435 ceph_readdir_cache_release(ctl
);
1437 ctl
->page
= grab_cache_page(&dir
->i_data
, pgoff
);
1439 ctl
->page
= find_lock_page(&dir
->i_data
, pgoff
);
1442 return idx
== 0 ? -ENOMEM
: 0;
1444 /* reading/filling the cache are serialized by
1445 * i_mutex, no need to use page lock */
1446 unlock_page(ctl
->page
);
1447 ctl
->dentries
= kmap(ctl
->page
);
1449 memset(ctl
->dentries
, 0, PAGE_SIZE
);
1452 if (req
->r_dir_release_cnt
== atomic64_read(&ci
->i_release_count
) &&
1453 req
->r_dir_ordered_cnt
== atomic64_read(&ci
->i_ordered_count
)) {
1454 dout("readdir cache dn %p idx %d\n", dn
, ctl
->index
);
1455 ctl
->dentries
[idx
] = dn
;
1458 dout("disable readdir cache\n");
1464 int ceph_readdir_prepopulate(struct ceph_mds_request
*req
,
1465 struct ceph_mds_session
*session
)
1467 struct dentry
*parent
= req
->r_dentry
;
1468 struct ceph_inode_info
*ci
= ceph_inode(d_inode(parent
));
1469 struct ceph_mds_reply_info_parsed
*rinfo
= &req
->r_reply_info
;
1473 int err
= 0, skipped
= 0, ret
, i
;
1474 struct inode
*snapdir
= NULL
;
1475 struct ceph_mds_request_head
*rhead
= req
->r_request
->front
.iov_base
;
1476 u32 frag
= le32_to_cpu(rhead
->args
.readdir
.frag
);
1479 struct ceph_readdir_cache_control cache_ctl
= {};
1482 return readdir_prepopulate_inodes_only(req
, session
);
1484 if (rinfo
->hash_order
&& req
->r_path2
) {
1485 last_hash
= ceph_str_hash(ci
->i_dir_layout
.dl_dir_hash
,
1486 req
->r_path2
, strlen(req
->r_path2
));
1487 last_hash
= ceph_frag_value(last_hash
);
1490 if (rinfo
->dir_dir
&&
1491 le32_to_cpu(rinfo
->dir_dir
->frag
) != frag
) {
1492 dout("readdir_prepopulate got new frag %x -> %x\n",
1493 frag
, le32_to_cpu(rinfo
->dir_dir
->frag
));
1494 frag
= le32_to_cpu(rinfo
->dir_dir
->frag
);
1495 if (!rinfo
->hash_order
)
1496 req
->r_readdir_offset
= 2;
1499 if (le32_to_cpu(rinfo
->head
->op
) == CEPH_MDS_OP_LSSNAP
) {
1500 snapdir
= ceph_get_snapdir(d_inode(parent
));
1501 parent
= d_find_alias(snapdir
);
1502 dout("readdir_prepopulate %d items under SNAPDIR dn %p\n",
1503 rinfo
->dir_nr
, parent
);
1505 dout("readdir_prepopulate %d items under dn %p\n",
1506 rinfo
->dir_nr
, parent
);
1508 ceph_fill_dirfrag(d_inode(parent
), rinfo
->dir_dir
);
1511 if (ceph_frag_is_leftmost(frag
) && req
->r_readdir_offset
== 2 &&
1512 !(rinfo
->hash_order
&& req
->r_path2
)) {
1513 /* note dir version at start of readdir so we can tell
1514 * if any dentries get dropped */
1515 req
->r_dir_release_cnt
= atomic64_read(&ci
->i_release_count
);
1516 req
->r_dir_ordered_cnt
= atomic64_read(&ci
->i_ordered_count
);
1517 req
->r_readdir_cache_idx
= 0;
1520 cache_ctl
.index
= req
->r_readdir_cache_idx
;
1521 fpos_offset
= req
->r_readdir_offset
;
1523 /* FIXME: release caps/leases if error occurs */
1524 for (i
= 0; i
< rinfo
->dir_nr
; i
++) {
1525 struct ceph_mds_reply_dir_entry
*rde
= rinfo
->dir_entries
+ i
;
1526 struct ceph_vino vino
;
1528 dname
.name
= rde
->name
;
1529 dname
.len
= rde
->name_len
;
1530 dname
.hash
= full_name_hash(parent
, dname
.name
, dname
.len
);
1532 vino
.ino
= le64_to_cpu(rde
->inode
.in
->ino
);
1533 vino
.snap
= le64_to_cpu(rde
->inode
.in
->snapid
);
1535 if (rinfo
->hash_order
) {
1536 u32 hash
= ceph_str_hash(ci
->i_dir_layout
.dl_dir_hash
,
1537 rde
->name
, rde
->name_len
);
1538 hash
= ceph_frag_value(hash
);
1539 if (hash
!= last_hash
)
1542 rde
->offset
= ceph_make_fpos(hash
, fpos_offset
++, true);
1544 rde
->offset
= ceph_make_fpos(frag
, fpos_offset
++, false);
1548 dn
= d_lookup(parent
, &dname
);
1549 dout("d_lookup on parent=%p name=%.*s got %p\n",
1550 parent
, dname
.len
, dname
.name
, dn
);
1553 dn
= d_alloc(parent
, &dname
);
1554 dout("d_alloc %p '%.*s' = %p\n", parent
,
1555 dname
.len
, dname
.name
, dn
);
1557 dout("d_alloc badness\n");
1561 } else if (d_really_is_positive(dn
) &&
1562 (ceph_ino(d_inode(dn
)) != vino
.ino
||
1563 ceph_snap(d_inode(dn
)) != vino
.snap
)) {
1564 dout(" dn %p points to wrong inode %p\n",
1572 if (d_really_is_positive(dn
)) {
1575 in
= ceph_get_inode(parent
->d_sb
, vino
);
1577 dout("new_inode badness\n");
1585 ret
= fill_inode(in
, NULL
, &rde
->inode
, NULL
, session
,
1586 req
->r_request_started
, -1,
1587 &req
->r_caps_reservation
);
1589 pr_err("fill_inode badness on %p\n", in
);
1590 if (d_really_is_negative(dn
))
1597 if (d_really_is_negative(dn
)) {
1598 struct dentry
*realdn
;
1600 if (ceph_security_xattr_deadlock(in
)) {
1601 dout(" skip splicing dn %p to inode %p"
1602 " (security xattr deadlock)\n", dn
, in
);
1608 realdn
= splice_dentry(dn
, in
);
1609 if (IS_ERR(realdn
)) {
1610 err
= PTR_ERR(realdn
);
1618 ceph_dentry(dn
)->offset
= rde
->offset
;
1620 update_dentry_lease(dn
, rde
->lease
, req
->r_session
,
1621 req
->r_request_started
);
1623 if (err
== 0 && skipped
== 0 && cache_ctl
.index
>= 0) {
1624 ret
= fill_readdir_cache(d_inode(parent
), dn
,
1634 if (err
== 0 && skipped
== 0) {
1635 req
->r_did_prepopulate
= true;
1636 req
->r_readdir_cache_idx
= cache_ctl
.index
;
1638 ceph_readdir_cache_release(&cache_ctl
);
1643 dout("readdir_prepopulate done\n");
1647 int ceph_inode_set_size(struct inode
*inode
, loff_t size
)
1649 struct ceph_inode_info
*ci
= ceph_inode(inode
);
1652 spin_lock(&ci
->i_ceph_lock
);
1653 dout("set_size %p %llu -> %llu\n", inode
, inode
->i_size
, size
);
1654 i_size_write(inode
, size
);
1655 inode
->i_blocks
= calc_inode_blocks(size
);
1657 /* tell the MDS if we are approaching max_size */
1658 if ((size
<< 1) >= ci
->i_max_size
&&
1659 (ci
->i_reported_size
<< 1) < ci
->i_max_size
)
1662 spin_unlock(&ci
->i_ceph_lock
);
1667 * Write back inode data in a worker thread. (This can't be done
1668 * in the message handler context.)
1670 void ceph_queue_writeback(struct inode
*inode
)
1673 if (queue_work(ceph_inode_to_client(inode
)->wb_wq
,
1674 &ceph_inode(inode
)->i_wb_work
)) {
1675 dout("ceph_queue_writeback %p\n", inode
);
1677 dout("ceph_queue_writeback %p failed\n", inode
);
1682 static void ceph_writeback_work(struct work_struct
*work
)
1684 struct ceph_inode_info
*ci
= container_of(work
, struct ceph_inode_info
,
1686 struct inode
*inode
= &ci
->vfs_inode
;
1688 dout("writeback %p\n", inode
);
1689 filemap_fdatawrite(&inode
->i_data
);
1694 * queue an async invalidation
1696 void ceph_queue_invalidate(struct inode
*inode
)
1699 if (queue_work(ceph_inode_to_client(inode
)->pg_inv_wq
,
1700 &ceph_inode(inode
)->i_pg_inv_work
)) {
1701 dout("ceph_queue_invalidate %p\n", inode
);
1703 dout("ceph_queue_invalidate %p failed\n", inode
);
1709 * Invalidate inode pages in a worker thread. (This can't be done
1710 * in the message handler context.)
1712 static void ceph_invalidate_work(struct work_struct
*work
)
1714 struct ceph_inode_info
*ci
= container_of(work
, struct ceph_inode_info
,
1716 struct inode
*inode
= &ci
->vfs_inode
;
1717 struct ceph_fs_client
*fsc
= ceph_inode_to_client(inode
);
1721 mutex_lock(&ci
->i_truncate_mutex
);
1723 if (ACCESS_ONCE(fsc
->mount_state
) == CEPH_MOUNT_SHUTDOWN
) {
1724 pr_warn_ratelimited("invalidate_pages %p %lld forced umount\n",
1725 inode
, ceph_ino(inode
));
1726 mapping_set_error(inode
->i_mapping
, -EIO
);
1727 truncate_pagecache(inode
, 0);
1728 mutex_unlock(&ci
->i_truncate_mutex
);
1732 spin_lock(&ci
->i_ceph_lock
);
1733 dout("invalidate_pages %p gen %d revoking %d\n", inode
,
1734 ci
->i_rdcache_gen
, ci
->i_rdcache_revoking
);
1735 if (ci
->i_rdcache_revoking
!= ci
->i_rdcache_gen
) {
1736 if (__ceph_caps_revoking_other(ci
, NULL
, CEPH_CAP_FILE_CACHE
))
1738 spin_unlock(&ci
->i_ceph_lock
);
1739 mutex_unlock(&ci
->i_truncate_mutex
);
1742 orig_gen
= ci
->i_rdcache_gen
;
1743 spin_unlock(&ci
->i_ceph_lock
);
1745 if (invalidate_inode_pages2(inode
->i_mapping
) < 0) {
1746 pr_err("invalidate_pages %p fails\n", inode
);
1749 spin_lock(&ci
->i_ceph_lock
);
1750 if (orig_gen
== ci
->i_rdcache_gen
&&
1751 orig_gen
== ci
->i_rdcache_revoking
) {
1752 dout("invalidate_pages %p gen %d successful\n", inode
,
1754 ci
->i_rdcache_revoking
--;
1757 dout("invalidate_pages %p gen %d raced, now %d revoking %d\n",
1758 inode
, orig_gen
, ci
->i_rdcache_gen
,
1759 ci
->i_rdcache_revoking
);
1760 if (__ceph_caps_revoking_other(ci
, NULL
, CEPH_CAP_FILE_CACHE
))
1763 spin_unlock(&ci
->i_ceph_lock
);
1764 mutex_unlock(&ci
->i_truncate_mutex
);
1767 ceph_check_caps(ci
, 0, NULL
);
1773 * called by trunc_wq;
1775 * We also truncate in a separate thread as well.
1777 static void ceph_vmtruncate_work(struct work_struct
*work
)
1779 struct ceph_inode_info
*ci
= container_of(work
, struct ceph_inode_info
,
1781 struct inode
*inode
= &ci
->vfs_inode
;
1783 dout("vmtruncate_work %p\n", inode
);
1784 __ceph_do_pending_vmtruncate(inode
);
1789 * Queue an async vmtruncate. If we fail to queue work, we will handle
1790 * the truncation the next time we call __ceph_do_pending_vmtruncate.
1792 void ceph_queue_vmtruncate(struct inode
*inode
)
1794 struct ceph_inode_info
*ci
= ceph_inode(inode
);
1798 if (queue_work(ceph_sb_to_client(inode
->i_sb
)->trunc_wq
,
1799 &ci
->i_vmtruncate_work
)) {
1800 dout("ceph_queue_vmtruncate %p\n", inode
);
1802 dout("ceph_queue_vmtruncate %p failed, pending=%d\n",
1803 inode
, ci
->i_truncate_pending
);
1809 * Make sure any pending truncation is applied before doing anything
1810 * that may depend on it.
1812 void __ceph_do_pending_vmtruncate(struct inode
*inode
)
1814 struct ceph_inode_info
*ci
= ceph_inode(inode
);
1816 int wrbuffer_refs
, finish
= 0;
1818 mutex_lock(&ci
->i_truncate_mutex
);
1820 spin_lock(&ci
->i_ceph_lock
);
1821 if (ci
->i_truncate_pending
== 0) {
1822 dout("__do_pending_vmtruncate %p none pending\n", inode
);
1823 spin_unlock(&ci
->i_ceph_lock
);
1824 mutex_unlock(&ci
->i_truncate_mutex
);
1829 * make sure any dirty snapped pages are flushed before we
1830 * possibly truncate them.. so write AND block!
1832 if (ci
->i_wrbuffer_ref_head
< ci
->i_wrbuffer_ref
) {
1833 dout("__do_pending_vmtruncate %p flushing snaps first\n",
1835 spin_unlock(&ci
->i_ceph_lock
);
1836 filemap_write_and_wait_range(&inode
->i_data
, 0,
1837 inode
->i_sb
->s_maxbytes
);
1841 /* there should be no reader or writer */
1842 WARN_ON_ONCE(ci
->i_rd_ref
|| ci
->i_wr_ref
);
1844 to
= ci
->i_truncate_size
;
1845 wrbuffer_refs
= ci
->i_wrbuffer_ref
;
1846 dout("__do_pending_vmtruncate %p (%d) to %lld\n", inode
,
1847 ci
->i_truncate_pending
, to
);
1848 spin_unlock(&ci
->i_ceph_lock
);
1850 truncate_pagecache(inode
, to
);
1852 spin_lock(&ci
->i_ceph_lock
);
1853 if (to
== ci
->i_truncate_size
) {
1854 ci
->i_truncate_pending
= 0;
1857 spin_unlock(&ci
->i_ceph_lock
);
1861 mutex_unlock(&ci
->i_truncate_mutex
);
1863 if (wrbuffer_refs
== 0)
1864 ceph_check_caps(ci
, CHECK_CAPS_AUTHONLY
, NULL
);
1866 wake_up_all(&ci
->i_cap_wq
);
1872 static const struct inode_operations ceph_symlink_iops
= {
1873 .get_link
= simple_get_link
,
1874 .setattr
= ceph_setattr
,
1875 .getattr
= ceph_getattr
,
1876 .listxattr
= ceph_listxattr
,
1879 int __ceph_setattr(struct inode
*inode
, struct iattr
*attr
)
1881 struct ceph_inode_info
*ci
= ceph_inode(inode
);
1882 const unsigned int ia_valid
= attr
->ia_valid
;
1883 struct ceph_mds_request
*req
;
1884 struct ceph_mds_client
*mdsc
= ceph_sb_to_client(inode
->i_sb
)->mdsc
;
1885 struct ceph_cap_flush
*prealloc_cf
;
1887 int release
= 0, dirtied
= 0;
1890 int inode_dirty_flags
= 0;
1891 bool lock_snap_rwsem
= false;
1893 prealloc_cf
= ceph_alloc_cap_flush();
1897 req
= ceph_mdsc_create_request(mdsc
, CEPH_MDS_OP_SETATTR
,
1900 ceph_free_cap_flush(prealloc_cf
);
1901 return PTR_ERR(req
);
1904 spin_lock(&ci
->i_ceph_lock
);
1905 issued
= __ceph_caps_issued(ci
, NULL
);
1907 if (!ci
->i_head_snapc
&&
1908 (issued
& (CEPH_CAP_ANY_EXCL
| CEPH_CAP_FILE_WR
))) {
1909 lock_snap_rwsem
= true;
1910 if (!down_read_trylock(&mdsc
->snap_rwsem
)) {
1911 spin_unlock(&ci
->i_ceph_lock
);
1912 down_read(&mdsc
->snap_rwsem
);
1913 spin_lock(&ci
->i_ceph_lock
);
1914 issued
= __ceph_caps_issued(ci
, NULL
);
1918 dout("setattr %p issued %s\n", inode
, ceph_cap_string(issued
));
1920 if (ia_valid
& ATTR_UID
) {
1921 dout("setattr %p uid %d -> %d\n", inode
,
1922 from_kuid(&init_user_ns
, inode
->i_uid
),
1923 from_kuid(&init_user_ns
, attr
->ia_uid
));
1924 if (issued
& CEPH_CAP_AUTH_EXCL
) {
1925 inode
->i_uid
= attr
->ia_uid
;
1926 dirtied
|= CEPH_CAP_AUTH_EXCL
;
1927 } else if ((issued
& CEPH_CAP_AUTH_SHARED
) == 0 ||
1928 !uid_eq(attr
->ia_uid
, inode
->i_uid
)) {
1929 req
->r_args
.setattr
.uid
= cpu_to_le32(
1930 from_kuid(&init_user_ns
, attr
->ia_uid
));
1931 mask
|= CEPH_SETATTR_UID
;
1932 release
|= CEPH_CAP_AUTH_SHARED
;
1935 if (ia_valid
& ATTR_GID
) {
1936 dout("setattr %p gid %d -> %d\n", inode
,
1937 from_kgid(&init_user_ns
, inode
->i_gid
),
1938 from_kgid(&init_user_ns
, attr
->ia_gid
));
1939 if (issued
& CEPH_CAP_AUTH_EXCL
) {
1940 inode
->i_gid
= attr
->ia_gid
;
1941 dirtied
|= CEPH_CAP_AUTH_EXCL
;
1942 } else if ((issued
& CEPH_CAP_AUTH_SHARED
) == 0 ||
1943 !gid_eq(attr
->ia_gid
, inode
->i_gid
)) {
1944 req
->r_args
.setattr
.gid
= cpu_to_le32(
1945 from_kgid(&init_user_ns
, attr
->ia_gid
));
1946 mask
|= CEPH_SETATTR_GID
;
1947 release
|= CEPH_CAP_AUTH_SHARED
;
1950 if (ia_valid
& ATTR_MODE
) {
1951 dout("setattr %p mode 0%o -> 0%o\n", inode
, inode
->i_mode
,
1953 if (issued
& CEPH_CAP_AUTH_EXCL
) {
1954 inode
->i_mode
= attr
->ia_mode
;
1955 dirtied
|= CEPH_CAP_AUTH_EXCL
;
1956 } else if ((issued
& CEPH_CAP_AUTH_SHARED
) == 0 ||
1957 attr
->ia_mode
!= inode
->i_mode
) {
1958 inode
->i_mode
= attr
->ia_mode
;
1959 req
->r_args
.setattr
.mode
= cpu_to_le32(attr
->ia_mode
);
1960 mask
|= CEPH_SETATTR_MODE
;
1961 release
|= CEPH_CAP_AUTH_SHARED
;
1965 if (ia_valid
& ATTR_ATIME
) {
1966 dout("setattr %p atime %ld.%ld -> %ld.%ld\n", inode
,
1967 inode
->i_atime
.tv_sec
, inode
->i_atime
.tv_nsec
,
1968 attr
->ia_atime
.tv_sec
, attr
->ia_atime
.tv_nsec
);
1969 if (issued
& CEPH_CAP_FILE_EXCL
) {
1970 ci
->i_time_warp_seq
++;
1971 inode
->i_atime
= attr
->ia_atime
;
1972 dirtied
|= CEPH_CAP_FILE_EXCL
;
1973 } else if ((issued
& CEPH_CAP_FILE_WR
) &&
1974 timespec_compare(&inode
->i_atime
,
1975 &attr
->ia_atime
) < 0) {
1976 inode
->i_atime
= attr
->ia_atime
;
1977 dirtied
|= CEPH_CAP_FILE_WR
;
1978 } else if ((issued
& CEPH_CAP_FILE_SHARED
) == 0 ||
1979 !timespec_equal(&inode
->i_atime
, &attr
->ia_atime
)) {
1980 ceph_encode_timespec(&req
->r_args
.setattr
.atime
,
1982 mask
|= CEPH_SETATTR_ATIME
;
1983 release
|= CEPH_CAP_FILE_CACHE
| CEPH_CAP_FILE_RD
|
1987 if (ia_valid
& ATTR_MTIME
) {
1988 dout("setattr %p mtime %ld.%ld -> %ld.%ld\n", inode
,
1989 inode
->i_mtime
.tv_sec
, inode
->i_mtime
.tv_nsec
,
1990 attr
->ia_mtime
.tv_sec
, attr
->ia_mtime
.tv_nsec
);
1991 if (issued
& CEPH_CAP_FILE_EXCL
) {
1992 ci
->i_time_warp_seq
++;
1993 inode
->i_mtime
= attr
->ia_mtime
;
1994 dirtied
|= CEPH_CAP_FILE_EXCL
;
1995 } else if ((issued
& CEPH_CAP_FILE_WR
) &&
1996 timespec_compare(&inode
->i_mtime
,
1997 &attr
->ia_mtime
) < 0) {
1998 inode
->i_mtime
= attr
->ia_mtime
;
1999 dirtied
|= CEPH_CAP_FILE_WR
;
2000 } else if ((issued
& CEPH_CAP_FILE_SHARED
) == 0 ||
2001 !timespec_equal(&inode
->i_mtime
, &attr
->ia_mtime
)) {
2002 ceph_encode_timespec(&req
->r_args
.setattr
.mtime
,
2004 mask
|= CEPH_SETATTR_MTIME
;
2005 release
|= CEPH_CAP_FILE_SHARED
| CEPH_CAP_FILE_RD
|
2009 if (ia_valid
& ATTR_SIZE
) {
2010 dout("setattr %p size %lld -> %lld\n", inode
,
2011 inode
->i_size
, attr
->ia_size
);
2012 if ((issued
& CEPH_CAP_FILE_EXCL
) &&
2013 attr
->ia_size
> inode
->i_size
) {
2014 i_size_write(inode
, attr
->ia_size
);
2015 inode
->i_blocks
= calc_inode_blocks(attr
->ia_size
);
2016 inode
->i_ctime
= attr
->ia_ctime
;
2017 ci
->i_reported_size
= attr
->ia_size
;
2018 dirtied
|= CEPH_CAP_FILE_EXCL
;
2019 } else if ((issued
& CEPH_CAP_FILE_SHARED
) == 0 ||
2020 attr
->ia_size
!= inode
->i_size
) {
2021 req
->r_args
.setattr
.size
= cpu_to_le64(attr
->ia_size
);
2022 req
->r_args
.setattr
.old_size
=
2023 cpu_to_le64(inode
->i_size
);
2024 mask
|= CEPH_SETATTR_SIZE
;
2025 release
|= CEPH_CAP_FILE_SHARED
| CEPH_CAP_FILE_RD
|
2030 /* these do nothing */
2031 if (ia_valid
& ATTR_CTIME
) {
2032 bool only
= (ia_valid
& (ATTR_SIZE
|ATTR_MTIME
|ATTR_ATIME
|
2033 ATTR_MODE
|ATTR_UID
|ATTR_GID
)) == 0;
2034 dout("setattr %p ctime %ld.%ld -> %ld.%ld (%s)\n", inode
,
2035 inode
->i_ctime
.tv_sec
, inode
->i_ctime
.tv_nsec
,
2036 attr
->ia_ctime
.tv_sec
, attr
->ia_ctime
.tv_nsec
,
2037 only
? "ctime only" : "ignored");
2038 inode
->i_ctime
= attr
->ia_ctime
;
2041 * if kernel wants to dirty ctime but nothing else,
2042 * we need to choose a cap to dirty under, or do
2043 * a almost-no-op setattr
2045 if (issued
& CEPH_CAP_AUTH_EXCL
)
2046 dirtied
|= CEPH_CAP_AUTH_EXCL
;
2047 else if (issued
& CEPH_CAP_FILE_EXCL
)
2048 dirtied
|= CEPH_CAP_FILE_EXCL
;
2049 else if (issued
& CEPH_CAP_XATTR_EXCL
)
2050 dirtied
|= CEPH_CAP_XATTR_EXCL
;
2052 mask
|= CEPH_SETATTR_CTIME
;
2055 if (ia_valid
& ATTR_FILE
)
2056 dout("setattr %p ATTR_FILE ... hrm!\n", inode
);
2059 inode_dirty_flags
= __ceph_mark_dirty_caps(ci
, dirtied
,
2061 inode
->i_ctime
= current_time(inode
);
2065 spin_unlock(&ci
->i_ceph_lock
);
2066 if (lock_snap_rwsem
)
2067 up_read(&mdsc
->snap_rwsem
);
2069 if (inode_dirty_flags
)
2070 __mark_inode_dirty(inode
, inode_dirty_flags
);
2072 if (ia_valid
& ATTR_MODE
) {
2073 err
= posix_acl_chmod(inode
, attr
->ia_mode
);
2079 req
->r_inode
= inode
;
2081 req
->r_inode_drop
= release
;
2082 req
->r_args
.setattr
.mask
= cpu_to_le32(mask
);
2083 req
->r_num_caps
= 1;
2084 err
= ceph_mdsc_do_request(mdsc
, NULL
, req
);
2086 dout("setattr %p result=%d (%s locally, %d remote)\n", inode
, err
,
2087 ceph_cap_string(dirtied
), mask
);
2089 ceph_mdsc_put_request(req
);
2090 if (mask
& CEPH_SETATTR_SIZE
)
2091 __ceph_do_pending_vmtruncate(inode
);
2092 ceph_free_cap_flush(prealloc_cf
);
2095 ceph_mdsc_put_request(req
);
2096 ceph_free_cap_flush(prealloc_cf
);
2103 int ceph_setattr(struct dentry
*dentry
, struct iattr
*attr
)
2105 struct inode
*inode
= d_inode(dentry
);
2108 if (ceph_snap(inode
) != CEPH_NOSNAP
)
2111 err
= setattr_prepare(dentry
, attr
);
2115 return __ceph_setattr(inode
, attr
);
2119 * Verify that we have a lease on the given mask. If not,
2120 * do a getattr against an mds.
2122 int __ceph_do_getattr(struct inode
*inode
, struct page
*locked_page
,
2123 int mask
, bool force
)
2125 struct ceph_fs_client
*fsc
= ceph_sb_to_client(inode
->i_sb
);
2126 struct ceph_mds_client
*mdsc
= fsc
->mdsc
;
2127 struct ceph_mds_request
*req
;
2130 if (ceph_snap(inode
) == CEPH_SNAPDIR
) {
2131 dout("do_getattr inode %p SNAPDIR\n", inode
);
2135 dout("do_getattr inode %p mask %s mode 0%o\n",
2136 inode
, ceph_cap_string(mask
), inode
->i_mode
);
2137 if (!force
&& ceph_caps_issued_mask(ceph_inode(inode
), mask
, 1))
2140 req
= ceph_mdsc_create_request(mdsc
, CEPH_MDS_OP_GETATTR
, USE_ANY_MDS
);
2142 return PTR_ERR(req
);
2143 req
->r_inode
= inode
;
2145 req
->r_num_caps
= 1;
2146 req
->r_args
.getattr
.mask
= cpu_to_le32(mask
);
2147 req
->r_locked_page
= locked_page
;
2148 err
= ceph_mdsc_do_request(mdsc
, NULL
, req
);
2149 if (locked_page
&& err
== 0) {
2150 u64 inline_version
= req
->r_reply_info
.targeti
.inline_version
;
2151 if (inline_version
== 0) {
2152 /* the reply is supposed to contain inline data */
2154 } else if (inline_version
== CEPH_INLINE_NONE
) {
2157 err
= req
->r_reply_info
.targeti
.inline_len
;
2160 ceph_mdsc_put_request(req
);
2161 dout("do_getattr result=%d\n", err
);
2167 * Check inode permissions. We verify we have a valid value for
2168 * the AUTH cap, then call the generic handler.
2170 int ceph_permission(struct inode
*inode
, int mask
)
2174 if (mask
& MAY_NOT_BLOCK
)
2177 err
= ceph_do_getattr(inode
, CEPH_CAP_AUTH_SHARED
, false);
2180 err
= generic_permission(inode
, mask
);
2185 * Get all attributes. Hopefully somedata we'll have a statlite()
2186 * and can limit the fields we require to be accurate.
2188 int ceph_getattr(struct vfsmount
*mnt
, struct dentry
*dentry
,
2191 struct inode
*inode
= d_inode(dentry
);
2192 struct ceph_inode_info
*ci
= ceph_inode(inode
);
2195 err
= ceph_do_getattr(inode
, CEPH_STAT_CAP_INODE_ALL
, false);
2197 generic_fillattr(inode
, stat
);
2198 stat
->ino
= ceph_translate_ino(inode
->i_sb
, inode
->i_ino
);
2199 if (ceph_snap(inode
) != CEPH_NOSNAP
)
2200 stat
->dev
= ceph_snap(inode
);
2203 if (S_ISDIR(inode
->i_mode
)) {
2204 if (ceph_test_mount_opt(ceph_sb_to_client(inode
->i_sb
),
2206 stat
->size
= ci
->i_rbytes
;
2208 stat
->size
= ci
->i_files
+ ci
->i_subdirs
;
2210 stat
->blksize
= 65536;