Lines Matching full:delegation
3 * linux/fs/nfs/delegation.c
7 * NFS file delegation management
24 #include "delegation.h"
33 static void __nfs_free_delegation(struct nfs_delegation *delegation) in __nfs_free_delegation() argument
35 put_cred(delegation->cred); in __nfs_free_delegation()
36 delegation->cred = NULL; in __nfs_free_delegation()
37 kfree_rcu(delegation, rcu); in __nfs_free_delegation()
40 static void nfs_mark_delegation_revoked(struct nfs_delegation *delegation) in nfs_mark_delegation_revoked() argument
42 if (!test_and_set_bit(NFS_DELEGATION_REVOKED, &delegation->flags)) { in nfs_mark_delegation_revoked()
43 delegation->stateid.type = NFS4_INVALID_STATEID_TYPE; in nfs_mark_delegation_revoked()
45 if (!test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) in nfs_mark_delegation_revoked()
46 nfs_clear_verifier_delegated(delegation->inode); in nfs_mark_delegation_revoked()
50 static struct nfs_delegation *nfs_get_delegation(struct nfs_delegation *delegation) in nfs_get_delegation() argument
52 refcount_inc(&delegation->refcount); in nfs_get_delegation()
53 return delegation; in nfs_get_delegation()
56 static void nfs_put_delegation(struct nfs_delegation *delegation) in nfs_put_delegation() argument
58 if (refcount_dec_and_test(&delegation->refcount)) in nfs_put_delegation()
59 __nfs_free_delegation(delegation); in nfs_put_delegation()
62 static void nfs_free_delegation(struct nfs_delegation *delegation) in nfs_free_delegation() argument
64 nfs_mark_delegation_revoked(delegation); in nfs_free_delegation()
65 nfs_put_delegation(delegation); in nfs_free_delegation()
69 * nfs_mark_delegation_referenced - set delegation's REFERENCED flag
70 * @delegation: delegation to process
73 void nfs_mark_delegation_referenced(struct nfs_delegation *delegation) in nfs_mark_delegation_referenced() argument
75 set_bit(NFS_DELEGATION_REFERENCED, &delegation->flags); in nfs_mark_delegation_referenced()
79 struct nfs_delegation *delegation) in nfs_mark_return_delegation() argument
81 set_bit(NFS_DELEGATION_RETURN, &delegation->flags); in nfs_mark_return_delegation()
86 nfs4_is_valid_delegation(const struct nfs_delegation *delegation, in nfs4_is_valid_delegation() argument
89 if (delegation != NULL && (delegation->type & flags) == flags && in nfs4_is_valid_delegation()
90 !test_bit(NFS_DELEGATION_REVOKED, &delegation->flags) && in nfs4_is_valid_delegation()
91 !test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) in nfs4_is_valid_delegation()
98 struct nfs_delegation *delegation; in nfs4_get_valid_delegation() local
100 delegation = rcu_dereference(NFS_I(inode)->delegation); in nfs4_get_valid_delegation()
101 if (nfs4_is_valid_delegation(delegation, 0)) in nfs4_get_valid_delegation()
102 return delegation; in nfs4_get_valid_delegation()
109 struct nfs_delegation *delegation; in nfs4_do_check_delegation() local
114 delegation = rcu_dereference(NFS_I(inode)->delegation); in nfs4_do_check_delegation()
115 if (nfs4_is_valid_delegation(delegation, flags)) { in nfs4_do_check_delegation()
117 nfs_mark_delegation_referenced(delegation); in nfs4_do_check_delegation()
124 * nfs4_have_delegation - check if inode has a delegation, mark it
127 * @flags: delegation types to check for
129 * Returns one if inode has the indicated delegation, otherwise zero.
137 * nfs4_check_delegation - check if inode has a delegation, do not mark
222 * nfs_inode_reclaim_delegation - process a delegation reclaim request
225 * @type: delegation type
226 * @stateid: delegation stateid
227 * @pagemod_limit: write delegation "space_limit"
234 struct nfs_delegation *delegation; in nfs_inode_reclaim_delegation() local
238 delegation = rcu_dereference(NFS_I(inode)->delegation); in nfs_inode_reclaim_delegation()
239 if (delegation != NULL) { in nfs_inode_reclaim_delegation()
240 spin_lock(&delegation->lock); in nfs_inode_reclaim_delegation()
241 nfs4_stateid_copy(&delegation->stateid, stateid); in nfs_inode_reclaim_delegation()
242 delegation->type = type; in nfs_inode_reclaim_delegation()
243 delegation->pagemod_limit = pagemod_limit; in nfs_inode_reclaim_delegation()
244 oldcred = delegation->cred; in nfs_inode_reclaim_delegation()
245 delegation->cred = get_cred(cred); in nfs_inode_reclaim_delegation()
246 clear_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags); in nfs_inode_reclaim_delegation()
248 &delegation->flags)) in nfs_inode_reclaim_delegation()
250 spin_unlock(&delegation->lock); in nfs_inode_reclaim_delegation()
261 static int nfs_do_return_delegation(struct inode *inode, struct nfs_delegation *delegation, int iss… in nfs_do_return_delegation() argument
266 if (!test_bit(NFS_DELEGATION_REVOKED, &delegation->flags)) { in nfs_do_return_delegation()
267 spin_lock(&delegation->lock); in nfs_do_return_delegation()
268 cred = get_cred(delegation->cred); in nfs_do_return_delegation()
269 spin_unlock(&delegation->lock); in nfs_do_return_delegation()
271 &delegation->stateid, in nfs_do_return_delegation()
278 static struct inode *nfs_delegation_grab_inode(struct nfs_delegation *delegation) in nfs_delegation_grab_inode() argument
282 spin_lock(&delegation->lock); in nfs_delegation_grab_inode()
283 if (delegation->inode != NULL) in nfs_delegation_grab_inode()
284 inode = igrab(delegation->inode); in nfs_delegation_grab_inode()
286 set_bit(NFS_DELEGATION_INODE_FREEING, &delegation->flags); in nfs_delegation_grab_inode()
287 spin_unlock(&delegation->lock); in nfs_delegation_grab_inode()
295 struct nfs_delegation *delegation = rcu_dereference(nfsi->delegation); in nfs_start_delegation_return_locked() local
297 if (delegation == NULL) in nfs_start_delegation_return_locked()
299 spin_lock(&delegation->lock); in nfs_start_delegation_return_locked()
300 if (!test_and_set_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) { in nfs_start_delegation_return_locked()
301 clear_bit(NFS_DELEGATION_RETURN_DELAYED, &delegation->flags); in nfs_start_delegation_return_locked()
303 ret = nfs_get_delegation(delegation); in nfs_start_delegation_return_locked()
305 spin_unlock(&delegation->lock); in nfs_start_delegation_return_locked()
315 struct nfs_delegation *delegation; in nfs_start_delegation_return() local
318 delegation = nfs_start_delegation_return_locked(nfsi); in nfs_start_delegation_return()
320 return delegation; in nfs_start_delegation_return()
323 static void nfs_abort_delegation_return(struct nfs_delegation *delegation, in nfs_abort_delegation_return() argument
327 spin_lock(&delegation->lock); in nfs_abort_delegation_return()
328 clear_bit(NFS_DELEGATION_RETURNING, &delegation->flags); in nfs_abort_delegation_return()
330 set_bit(NFS_DELEGATION_RETURN_DELAYED, &delegation->flags); in nfs_abort_delegation_return()
333 spin_unlock(&delegation->lock); in nfs_abort_delegation_return()
338 struct nfs_delegation *delegation, in nfs_detach_delegation_locked() argument
342 rcu_dereference_protected(nfsi->delegation, in nfs_detach_delegation_locked()
345 if (deleg_cur == NULL || delegation != deleg_cur) in nfs_detach_delegation_locked()
348 spin_lock(&delegation->lock); in nfs_detach_delegation_locked()
349 if (!delegation->inode) { in nfs_detach_delegation_locked()
350 spin_unlock(&delegation->lock); in nfs_detach_delegation_locked()
353 list_del_rcu(&delegation->super_list); in nfs_detach_delegation_locked()
354 delegation->inode = NULL; in nfs_detach_delegation_locked()
355 rcu_assign_pointer(nfsi->delegation, NULL); in nfs_detach_delegation_locked()
356 spin_unlock(&delegation->lock); in nfs_detach_delegation_locked()
357 return delegation; in nfs_detach_delegation_locked()
361 struct nfs_delegation *delegation, in nfs_detach_delegation() argument
367 delegation = nfs_detach_delegation_locked(nfsi, delegation, clp); in nfs_detach_delegation()
369 return delegation; in nfs_detach_delegation()
377 struct nfs_delegation *delegation; in nfs_inode_detach_delegation() local
380 delegation = rcu_dereference(nfsi->delegation); in nfs_inode_detach_delegation()
381 if (delegation != NULL) in nfs_inode_detach_delegation()
382 delegation = nfs_detach_delegation(nfsi, delegation, server); in nfs_inode_detach_delegation()
384 return delegation; in nfs_inode_detach_delegation()
388 nfs_update_delegation_cred(struct nfs_delegation *delegation, in nfs_update_delegation_cred() argument
393 if (cred_fscmp(delegation->cred, cred) != 0) { in nfs_update_delegation_cred()
394 old = xchg(&delegation->cred, get_cred(cred)); in nfs_update_delegation_cred()
400 nfs_update_inplace_delegation(struct nfs_delegation *delegation, in nfs_update_inplace_delegation() argument
403 if (nfs4_stateid_is_newer(&update->stateid, &delegation->stateid)) { in nfs_update_inplace_delegation()
404 delegation->stateid.seqid = update->stateid.seqid; in nfs_update_inplace_delegation()
406 delegation->type = update->type; in nfs_update_inplace_delegation()
407 delegation->pagemod_limit = update->pagemod_limit; in nfs_update_inplace_delegation()
408 if (test_bit(NFS_DELEGATION_REVOKED, &delegation->flags)) { in nfs_update_inplace_delegation()
409 delegation->change_attr = update->change_attr; in nfs_update_inplace_delegation()
410 nfs_update_delegation_cred(delegation, update->cred); in nfs_update_inplace_delegation()
412 clear_bit(NFS_DELEGATION_REVOKED, &delegation->flags); in nfs_update_inplace_delegation()
419 * nfs_inode_set_delegation - set up a delegation on an inode
420 * @inode: inode to which delegation applies
421 * @cred: cred to use for subsequent delegation processing
422 * @type: delegation type
423 * @stateid: delegation stateid
424 * @pagemod_limit: write delegation "space_limit"
436 struct nfs_delegation *delegation, *old_delegation; in nfs_inode_set_delegation() local
440 delegation = kmalloc(sizeof(*delegation), GFP_KERNEL_ACCOUNT); in nfs_inode_set_delegation()
441 if (delegation == NULL) in nfs_inode_set_delegation()
443 nfs4_stateid_copy(&delegation->stateid, stateid); in nfs_inode_set_delegation()
444 refcount_set(&delegation->refcount, 1); in nfs_inode_set_delegation()
445 delegation->type = type; in nfs_inode_set_delegation()
446 delegation->pagemod_limit = pagemod_limit; in nfs_inode_set_delegation()
447 delegation->change_attr = inode_peek_iversion_raw(inode); in nfs_inode_set_delegation()
448 delegation->cred = get_cred(cred); in nfs_inode_set_delegation()
449 delegation->inode = inode; in nfs_inode_set_delegation()
450 delegation->flags = 1<<NFS_DELEGATION_REFERENCED; in nfs_inode_set_delegation()
451 delegation->test_gen = 0; in nfs_inode_set_delegation()
452 spin_lock_init(&delegation->lock); in nfs_inode_set_delegation()
455 old_delegation = rcu_dereference_protected(nfsi->delegation, in nfs_inode_set_delegation()
459 /* Is this an update of the existing delegation? */ in nfs_inode_set_delegation()
461 &delegation->stateid)) { in nfs_inode_set_delegation()
464 delegation); in nfs_inode_set_delegation()
472 * Allow for upgrades to a WRITE delegation, but in nfs_inode_set_delegation()
476 "a duplicate delegation!\n", in nfs_inode_set_delegation()
478 if (delegation->type == old_delegation->type || in nfs_inode_set_delegation()
479 !(delegation->type & FMODE_WRITE)) { in nfs_inode_set_delegation()
480 freeme = delegation; in nfs_inode_set_delegation()
481 delegation = NULL; in nfs_inode_set_delegation()
494 * the delegation, then pre-emptively ask for a full attribute in nfs_inode_set_delegation()
508 list_add_tail_rcu(&delegation->super_list, &server->delegations); in nfs_inode_set_delegation()
509 rcu_assign_pointer(nfsi->delegation, delegation); in nfs_inode_set_delegation()
510 delegation = NULL; in nfs_inode_set_delegation()
517 if (delegation != NULL) in nfs_inode_set_delegation()
518 __nfs_free_delegation(delegation); in nfs_inode_set_delegation()
527 * Basic procedure for returning a delegation to the server
529 static int nfs_end_delegation_return(struct inode *inode, struct nfs_delegation *delegation, int is… in nfs_end_delegation_return() argument
535 if (delegation == NULL) in nfs_end_delegation_return()
544 if (test_bit(NFS_DELEGATION_REVOKED, &delegation->flags)) in nfs_end_delegation_return()
546 err = nfs_delegation_claim_opens(inode, &delegation->stateid, in nfs_end_delegation_return()
547 delegation->type); in nfs_end_delegation_return()
557 nfs_abort_delegation_return(delegation, clp, err); in nfs_end_delegation_return()
561 err = nfs_do_return_delegation(inode, delegation, issync); in nfs_end_delegation_return()
564 nfs_put_delegation(delegation); in nfs_end_delegation_return()
568 static bool nfs_delegation_need_return(struct nfs_delegation *delegation) in nfs_delegation_need_return() argument
572 if (test_and_clear_bit(NFS_DELEGATION_RETURN, &delegation->flags)) in nfs_delegation_need_return()
574 else if (test_bit(NFS_DELEGATION_RETURN_IF_CLOSED, &delegation->flags)) { in nfs_delegation_need_return()
577 spin_lock(&delegation->lock); in nfs_delegation_need_return()
578 inode = delegation->inode; in nfs_delegation_need_return()
581 spin_unlock(&delegation->lock); in nfs_delegation_need_return()
584 clear_bit(NFS_DELEGATION_RETURN_IF_CLOSED, &delegation->flags); in nfs_delegation_need_return()
585 if (test_bit(NFS_DELEGATION_RETURNING, &delegation->flags) || in nfs_delegation_need_return()
586 test_bit(NFS_DELEGATION_RETURN_DELAYED, &delegation->flags) || in nfs_delegation_need_return()
587 test_bit(NFS_DELEGATION_REVOKED, &delegation->flags)) in nfs_delegation_need_return()
596 struct nfs_delegation *delegation; in nfs_server_return_marked_delegations() local
607 * list delegation in the server from the delegations in nfs_server_return_marked_delegations()
609 * prev is an RCU-protected pointer to a delegation which in nfs_server_return_marked_delegations()
614 delegation = NULL; in nfs_server_return_marked_delegations()
617 delegation = rcu_dereference(NFS_I(place_holder)->delegation); in nfs_server_return_marked_delegations()
618 if (!delegation || delegation != place_holder_deleg) in nfs_server_return_marked_delegations()
619 delegation = list_entry_rcu(server->delegations.next, in nfs_server_return_marked_delegations()
621 list_for_each_entry_from_rcu(delegation, &server->delegations, super_list) { in nfs_server_return_marked_delegations()
624 if (test_bit(NFS_DELEGATION_INODE_FREEING, &delegation->flags)) in nfs_server_return_marked_delegations()
626 if (!nfs_delegation_need_return(delegation)) { in nfs_server_return_marked_delegations()
627 if (nfs4_is_valid_delegation(delegation, 0)) in nfs_server_return_marked_delegations()
628 prev = delegation; in nfs_server_return_marked_delegations()
641 inode = nfs_delegation_grab_inode(delegation); in nfs_server_return_marked_delegations()
647 delegation = nfs_start_delegation_return_locked(NFS_I(inode)); in nfs_server_return_marked_delegations()
652 err = nfs_end_delegation_return(inode, delegation, 0); in nfs_server_return_marked_delegations()
721 * nfs_inode_evict_delegation - return delegation, don't reclaim opens
724 * Does not protect against delegation reclaims, therefore really only safe
726 * the delegation structure.
730 struct nfs_delegation *delegation; in nfs_inode_evict_delegation() local
732 delegation = nfs_inode_detach_delegation(inode); in nfs_inode_evict_delegation()
733 if (delegation != NULL) { in nfs_inode_evict_delegation()
734 set_bit(NFS_DELEGATION_RETURNING, &delegation->flags); in nfs_inode_evict_delegation()
735 set_bit(NFS_DELEGATION_INODE_FREEING, &delegation->flags); in nfs_inode_evict_delegation()
736 nfs_do_return_delegation(inode, delegation, 1); in nfs_inode_evict_delegation()
737 nfs_free_delegation(delegation); in nfs_inode_evict_delegation()
742 * nfs4_inode_return_delegation - synchronously return a delegation
746 * assumption that if we need to return the delegation, then
754 struct nfs_delegation *delegation; in nfs4_inode_return_delegation() local
756 delegation = nfs_start_delegation_return(nfsi); in nfs4_inode_return_delegation()
757 if (delegation != NULL) { in nfs4_inode_return_delegation()
762 return nfs_end_delegation_return(inode, delegation, 1); in nfs4_inode_return_delegation()
768 * nfs4_inode_return_delegation_on_close - asynchronously return a delegation
772 * inode delegation needs to be returned immediately.
776 struct nfs_delegation *delegation; in nfs4_inode_return_delegation_on_close() local
782 delegation = nfs4_get_valid_delegation(inode); in nfs4_inode_return_delegation_on_close()
783 if (!delegation) in nfs4_inode_return_delegation_on_close()
785 if (test_bit(NFS_DELEGATION_RETURN_IF_CLOSED, &delegation->flags) || in nfs4_inode_return_delegation_on_close()
787 spin_lock(&delegation->lock); in nfs4_inode_return_delegation_on_close()
788 if (delegation->inode && in nfs4_inode_return_delegation_on_close()
790 !test_and_set_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) { in nfs4_inode_return_delegation_on_close()
791 clear_bit(NFS_DELEGATION_RETURN_IF_CLOSED, &delegation->flags); in nfs4_inode_return_delegation_on_close()
793 ret = nfs_get_delegation(delegation); in nfs4_inode_return_delegation_on_close()
795 spin_unlock(&delegation->lock); in nfs4_inode_return_delegation_on_close()
808 * Make the inode writeable by returning the delegation if necessary
814 struct nfs_delegation *delegation; in nfs4_inode_make_writeable() local
817 delegation = nfs4_get_valid_delegation(inode); in nfs4_inode_make_writeable()
818 if (delegation == NULL || in nfs4_inode_make_writeable()
820 (delegation->type & FMODE_WRITE))) { in nfs4_inode_make_writeable()
829 struct nfs_delegation *delegation) in nfs_mark_return_if_closed_delegation() argument
831 set_bit(NFS_DELEGATION_RETURN_IF_CLOSED, &delegation->flags); in nfs_mark_return_if_closed_delegation()
837 struct nfs_delegation *delegation; in nfs_server_mark_return_all_delegations() local
840 list_for_each_entry_rcu(delegation, &server->delegations, super_list) { in nfs_server_mark_return_all_delegations()
841 nfs_mark_return_delegation(server, delegation); in nfs_server_mark_return_all_delegations()
900 struct nfs_delegation *delegation; in nfs_mark_return_unused_delegation_types() local
902 list_for_each_entry_rcu(delegation, &server->delegations, super_list) { in nfs_mark_return_unused_delegation_types()
903 if ((delegation->type == (FMODE_READ|FMODE_WRITE)) && !(flags & FMODE_WRITE)) in nfs_mark_return_unused_delegation_types()
905 if (delegation->type & flags) in nfs_mark_return_unused_delegation_types()
906 nfs_mark_return_if_closed_delegation(server, delegation); in nfs_mark_return_unused_delegation_types()
924 struct nfs_delegation *delegation; in nfs_revoke_delegation() local
929 delegation = rcu_dereference(NFS_I(inode)->delegation); in nfs_revoke_delegation()
930 if (delegation == NULL) in nfs_revoke_delegation()
933 nfs4_stateid_copy(&tmp, &delegation->stateid); in nfs_revoke_delegation()
936 if (!nfs4_stateid_match_other(stateid, &delegation->stateid)) in nfs_revoke_delegation()
938 spin_lock(&delegation->lock); in nfs_revoke_delegation()
940 if (nfs4_stateid_is_newer(&delegation->stateid, stateid)) { in nfs_revoke_delegation()
941 spin_unlock(&delegation->lock); in nfs_revoke_delegation()
944 delegation->stateid.seqid = stateid->seqid; in nfs_revoke_delegation()
946 spin_unlock(&delegation->lock); in nfs_revoke_delegation()
948 nfs_mark_delegation_revoked(delegation); in nfs_revoke_delegation()
966 struct nfs_delegation *delegation; in nfs_delegation_mark_returned() local
972 delegation = rcu_dereference(NFS_I(inode)->delegation); in nfs_delegation_mark_returned()
973 if (!delegation) in nfs_delegation_mark_returned()
976 spin_lock(&delegation->lock); in nfs_delegation_mark_returned()
977 if (!nfs4_stateid_match_other(stateid, &delegation->stateid)) in nfs_delegation_mark_returned()
980 /* If delegation->stateid is newer, dont mark as returned */ in nfs_delegation_mark_returned()
981 if (nfs4_stateid_is_newer(&delegation->stateid, stateid)) in nfs_delegation_mark_returned()
983 if (delegation->stateid.seqid != stateid->seqid) in nfs_delegation_mark_returned()
984 delegation->stateid.seqid = stateid->seqid; in nfs_delegation_mark_returned()
987 nfs_mark_delegation_revoked(delegation); in nfs_delegation_mark_returned()
990 clear_bit(NFS_DELEGATION_RETURNING, &delegation->flags); in nfs_delegation_mark_returned()
992 spin_unlock(&delegation->lock); in nfs_delegation_mark_returned()
1002 * @flags: delegation types to expire
1013 struct nfs_delegation *delegation; in nfs_mark_return_unreferenced_delegations() local
1015 list_for_each_entry_rcu(delegation, &server->delegations, super_list) { in nfs_mark_return_unreferenced_delegations()
1016 if (test_and_clear_bit(NFS_DELEGATION_REFERENCED, &delegation->flags)) in nfs_mark_return_unreferenced_delegations()
1018 nfs_mark_return_if_closed_delegation(server, delegation); in nfs_mark_return_unreferenced_delegations()
1040 * nfs_async_inode_return_delegation - asynchronously return a delegation
1051 struct nfs_delegation *delegation; in nfs_async_inode_return_delegation() local
1054 delegation = nfs4_get_valid_delegation(inode); in nfs_async_inode_return_delegation()
1055 if (delegation == NULL) in nfs_async_inode_return_delegation()
1058 !clp->cl_mvops->match_stateid(&delegation->stateid, stateid)) in nfs_async_inode_return_delegation()
1060 nfs_mark_return_delegation(server, delegation); in nfs_async_inode_return_delegation()
1077 struct nfs_delegation *delegation; in nfs_delegation_find_inode_server() local
1081 list_for_each_entry_rcu(delegation, &server->delegations, super_list) { in nfs_delegation_find_inode_server()
1082 spin_lock(&delegation->lock); in nfs_delegation_find_inode_server()
1083 if (delegation->inode != NULL && in nfs_delegation_find_inode_server()
1084 !test_bit(NFS_DELEGATION_REVOKED, &delegation->flags) && in nfs_delegation_find_inode_server()
1085 nfs_compare_fh(fhandle, &NFS_I(delegation->inode)->fh) == 0) { in nfs_delegation_find_inode_server()
1088 res = igrab(delegation->inode); in nfs_delegation_find_inode_server()
1090 spin_unlock(&delegation->lock); in nfs_delegation_find_inode_server()
1100 spin_unlock(&delegation->lock); in nfs_delegation_find_inode_server()
1106 * nfs_delegation_find_inode - retrieve the inode associated with a delegation
1108 * @fhandle: filehandle from a delegation recall
1133 struct nfs_delegation *delegation; in nfs_delegation_mark_reclaim_server() local
1135 list_for_each_entry_rcu(delegation, &server->delegations, super_list) { in nfs_delegation_mark_reclaim_server()
1137 * If the delegation may have been admin revoked, then we in nfs_delegation_mark_reclaim_server()
1140 if (test_bit(NFS_DELEGATION_TEST_EXPIRED, &delegation->flags)) in nfs_delegation_mark_reclaim_server()
1142 set_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags); in nfs_delegation_mark_reclaim_server()
1164 struct nfs_delegation *delegation; in nfs_server_reap_unclaimed_delegations() local
1169 list_for_each_entry_rcu(delegation, &server->delegations, super_list) { in nfs_server_reap_unclaimed_delegations()
1171 &delegation->flags) || in nfs_server_reap_unclaimed_delegations()
1173 &delegation->flags) || in nfs_server_reap_unclaimed_delegations()
1175 &delegation->flags) == 0) in nfs_server_reap_unclaimed_delegations()
1177 inode = nfs_delegation_grab_inode(delegation); in nfs_server_reap_unclaimed_delegations()
1180 delegation = nfs_start_delegation_return_locked(NFS_I(inode)); in nfs_server_reap_unclaimed_delegations()
1182 if (delegation != NULL) { in nfs_server_reap_unclaimed_delegations()
1183 if (nfs_detach_delegation(NFS_I(inode), delegation, in nfs_server_reap_unclaimed_delegations()
1185 nfs_free_delegation(delegation); in nfs_server_reap_unclaimed_delegations()
1187 nfs_put_delegation(delegation); in nfs_server_reap_unclaimed_delegations()
1216 struct nfs_delegation *delegation) in nfs_mark_test_expired_delegation() argument
1218 if (delegation->stateid.type == NFS4_INVALID_STATEID_TYPE) in nfs_mark_test_expired_delegation()
1220 clear_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags); in nfs_mark_test_expired_delegation()
1221 set_bit(NFS_DELEGATION_TEST_EXPIRED, &delegation->flags); in nfs_mark_test_expired_delegation()
1228 struct nfs_delegation *delegation; in nfs_inode_mark_test_expired_delegation() local
1231 delegation = rcu_dereference(NFS_I(inode)->delegation); in nfs_inode_mark_test_expired_delegation()
1232 if (delegation) in nfs_inode_mark_test_expired_delegation()
1233 nfs_mark_test_expired_delegation(server, delegation); in nfs_inode_mark_test_expired_delegation()
1240 struct nfs_delegation *delegation; in nfs_delegation_mark_test_expired_server() local
1242 list_for_each_entry_rcu(delegation, &server->delegations, super_list) in nfs_delegation_mark_test_expired_server()
1243 nfs_mark_test_expired_delegation(server, delegation); in nfs_delegation_mark_test_expired_server()
1294 struct nfs_delegation *delegation; in nfs_server_reap_expired_delegations() local
1303 list_for_each_entry_rcu(delegation, &server->delegations, super_list) { in nfs_server_reap_expired_delegations()
1305 &delegation->flags) || in nfs_server_reap_expired_delegations()
1307 &delegation->flags) || in nfs_server_reap_expired_delegations()
1309 &delegation->flags) == 0 || in nfs_server_reap_expired_delegations()
1310 delegation->test_gen == gen) in nfs_server_reap_expired_delegations()
1312 inode = nfs_delegation_grab_inode(delegation); in nfs_server_reap_expired_delegations()
1315 spin_lock(&delegation->lock); in nfs_server_reap_expired_delegations()
1316 cred = get_cred_rcu(delegation->cred); in nfs_server_reap_expired_delegations()
1317 nfs4_stateid_copy(&stateid, &delegation->stateid); in nfs_server_reap_expired_delegations()
1318 spin_unlock(&delegation->lock); in nfs_server_reap_expired_delegations()
1319 delegation->test_gen = gen; in nfs_server_reap_expired_delegations()
1320 clear_bit(NFS_DELEGATION_TEST_EXPIRED, &delegation->flags); in nfs_server_reap_expired_delegations()
1356 struct nfs_delegation *delegation; in nfs_inode_find_delegation_state_and_recover() local
1360 delegation = rcu_dereference(NFS_I(inode)->delegation); in nfs_inode_find_delegation_state_and_recover()
1361 if (delegation && in nfs_inode_find_delegation_state_and_recover()
1362 nfs4_stateid_match_or_older(&delegation->stateid, stateid) && in nfs_inode_find_delegation_state_and_recover()
1363 !test_bit(NFS_DELEGATION_REVOKED, &delegation->flags)) { in nfs_inode_find_delegation_state_and_recover()
1364 nfs_mark_test_expired_delegation(NFS_SERVER(inode), delegation); in nfs_inode_find_delegation_state_and_recover()
1395 * nfs4_refresh_delegation_stateid - Update delegation stateid seqid
1399 * Returns "true" and updates "dst->seqid" * if inode had a delegation
1400 * that matches our delegation stateid. Otherwise "false" is returned.
1404 struct nfs_delegation *delegation; in nfs4_refresh_delegation_stateid() local
1410 delegation = rcu_dereference(NFS_I(inode)->delegation); in nfs4_refresh_delegation_stateid()
1411 if (delegation != NULL && in nfs4_refresh_delegation_stateid()
1412 nfs4_stateid_match_other(dst, &delegation->stateid) && in nfs4_refresh_delegation_stateid()
1413 nfs4_stateid_is_newer(&delegation->stateid, dst) && in nfs4_refresh_delegation_stateid()
1414 !test_bit(NFS_DELEGATION_REVOKED, &delegation->flags)) { in nfs4_refresh_delegation_stateid()
1415 dst->seqid = delegation->stateid.seqid; in nfs4_refresh_delegation_stateid()
1426 * @flags: delegation type requirement
1430 * Returns "true" and fills in "dst->data" * if inode had a delegation,
1437 struct nfs_delegation *delegation; in nfs4_copy_delegation_stateid() local
1442 delegation = rcu_dereference(nfsi->delegation); in nfs4_copy_delegation_stateid()
1443 if (!delegation) in nfs4_copy_delegation_stateid()
1445 spin_lock(&delegation->lock); in nfs4_copy_delegation_stateid()
1446 ret = nfs4_is_valid_delegation(delegation, flags); in nfs4_copy_delegation_stateid()
1448 nfs4_stateid_copy(dst, &delegation->stateid); in nfs4_copy_delegation_stateid()
1449 nfs_mark_delegation_referenced(delegation); in nfs4_copy_delegation_stateid()
1451 *cred = get_cred(delegation->cred); in nfs4_copy_delegation_stateid()
1453 spin_unlock(&delegation->lock); in nfs4_copy_delegation_stateid()
1464 * against the delegation 'space_limit' field to see if
1470 struct nfs_delegation *delegation; in nfs4_delegation_flush_on_close() local
1474 delegation = rcu_dereference(nfsi->delegation); in nfs4_delegation_flush_on_close()
1475 if (delegation == NULL || !(delegation->type & FMODE_WRITE)) in nfs4_delegation_flush_on_close()
1477 if (atomic_long_read(&nfsi->nrequests) < delegation->pagemod_limit) in nfs4_delegation_flush_on_close()