Lines Matching refs:cap
30 * If the client holds a *_SHARED cap, the client has a coherent value
54 * Generate readable cap strings for debugging output.
137 struct ceph_cap *cap;
141 cap = list_first_entry(&mdsc->caps_list,
143 list_del(&cap->caps_item);
144 kmem_cache_free(ceph_cap_cachep, cap);
170 struct ceph_cap *cap;
180 cap = list_first_entry(&mdsc->caps_list,
182 list_del(&cap->caps_item);
183 kmem_cache_free(ceph_cap_cachep, cap);
206 struct ceph_cap *cap;
231 cap = kmem_cache_alloc(ceph_cap_cachep, GFP_NOFS);
232 if (cap) {
233 list_add(&cap->caps_item, &newcaps);
331 struct ceph_cap *cap = NULL;
333 /* temporary, until we do something about cap import/export */
335 cap = kmem_cache_alloc(ceph_cap_cachep, GFP_NOFS);
336 if (cap) {
348 cap = list_first_entry(&mdsc->caps_list,
350 list_del(&cap->caps_item);
358 return cap;
374 cap = list_first_entry(&mdsc->caps_list, struct ceph_cap, caps_item);
375 list_del(&cap->caps_item);
380 return cap;
383 void ceph_put_cap(struct ceph_mds_client *mdsc, struct ceph_cap *cap)
387 cap, mdsc->caps_total_count, mdsc->caps_use_count,
397 kmem_cache_free(ceph_cap_cachep, cap);
400 list_add(&cap->caps_item, &mdsc->caps_list);
437 struct ceph_cap *cap;
441 cap = rb_entry(n, struct ceph_cap, ci_node);
442 if (mds < cap->mds)
444 else if (mds > cap->mds)
447 return cap;
454 struct ceph_cap *cap;
457 cap = __get_cap_for_mds(ci, mds);
459 return cap;
470 struct ceph_cap *cap = NULL;
474 cap = rb_entry(parent, struct ceph_cap, ci_node);
475 if (new->mds < cap->mds)
477 else if (new->mds > cap->mds)
488 * (re)set cap hold timeouts, which control the delayed release
489 * of unused caps back to the MDS. Should be called on cap use.
502 * (Re)queue cap at the end of the delayed cap release list.
530 * indicating we should send a cap message to flush dirty metadata
531 * asap, and move to the front of the delayed cap list.
546 * Cancel delayed work on cap.
562 static void __check_cap_issue(struct ceph_inode_info *ci, struct ceph_cap *cap,
581 * know what happened to this directory while we didn't have the cap.
629 * it is < 0. (This is so we can atomically add the cap and add an
640 struct ceph_cap *cap;
647 dout("add_cap %p mds%d cap %llx %s seq %d\n", inode,
652 cap = __get_cap_for_mds(ci, mds);
653 if (!cap) {
654 cap = *new_cap;
657 cap->issued = 0;
658 cap->implemented = 0;
659 cap->mds = mds;
660 cap->mds_wanted = 0;
661 cap->mseq = 0;
663 cap->ci = ci;
664 __insert_cap_node(ci, cap);
666 /* add to session cap list */
667 cap->session = session;
669 list_add_tail(&cap->session_caps, &session->s_caps);
675 list_move_tail(&cap->session_caps, &session->s_caps);
678 if (cap->cap_gen < gen)
679 cap->issued = cap->implemented = CEPH_CAP_PIN;
682 * auth mds of the inode changed. we received the cap export
683 * message, but still haven't received the cap import message.
684 * handle_cap_export() updated the new auth MDS' cap.
686 * "ceph_seq_cmp(seq, cap->seq) <= 0" means we are processing
687 * a message that was send before the cap import message. So
690 if (ceph_seq_cmp(seq, cap->seq) <= 0) {
691 WARN_ON(cap != ci->i_auth_cap);
692 WARN_ON(cap->cap_id != cap_id);
693 seq = cap->seq;
694 mseq = cap->mseq;
695 issued |= cap->issued;
716 __check_cap_issue(ci, cap, issued);
736 ci->i_auth_cap->session != cap->session)
737 change_auth_cap_ses(ci, cap->session);
738 ci->i_auth_cap = cap;
739 cap->mds_wanted = wanted;
742 WARN_ON(ci->i_auth_cap == cap);
745 dout("add_cap inode %p (%llx.%llx) cap %p %s now %s seq %d mds%d\n",
746 inode, ceph_vinop(inode), cap, ceph_cap_string(issued),
747 ceph_cap_string(issued|cap->issued), seq, mds);
748 cap->cap_id = cap_id;
749 cap->issued = issued;
750 cap->implemented |= issued;
751 if (ceph_seq_cmp(mseq, cap->mseq) > 0)
752 cap->mds_wanted = wanted;
754 cap->mds_wanted |= wanted;
755 cap->seq = seq;
756 cap->issue_seq = seq;
757 cap->mseq = mseq;
758 cap->cap_gen = gen;
763 * Return true if cap has not timed out and belongs to the current
767 static int __cap_is_valid(struct ceph_cap *cap)
772 gen = atomic_read(&cap->session->s_cap_gen);
773 ttl = cap->session->s_cap_ttl;
775 if (cap->cap_gen < gen || time_after_eq(jiffies, ttl)) {
776 dout("__cap_is_valid %p cap %p issued %s "
777 "but STALE (gen %u vs %u)\n", &cap->ci->netfs.inode,
778 cap, ceph_cap_string(cap->issued), cap->cap_gen, gen);
786 * Return set of valid cap bits issued to us. Note that caps time
793 struct ceph_cap *cap;
799 cap = rb_entry(p, struct ceph_cap, ci_node);
800 if (!__cap_is_valid(cap))
802 dout("__ceph_caps_issued %p cap %p issued %s\n",
803 &ci->netfs.inode, cap, ceph_cap_string(cap->issued));
804 have |= cap->issued;
806 *implemented |= cap->implemented;
814 cap = ci->i_auth_cap;
815 have &= ~cap->implemented | cap->issued;
821 * Get cap bits issued by caps other than @ocap
826 struct ceph_cap *cap;
830 cap = rb_entry(p, struct ceph_cap, ci_node);
831 if (cap == ocap)
833 if (!__cap_is_valid(cap))
835 have |= cap->issued;
841 * Move a cap to the end of the LRU (oldest caps at list head, newest
844 static void __touch_cap(struct ceph_cap *cap)
846 struct ceph_mds_session *s = cap->session;
850 dout("__touch_cap %p cap %p mds%d\n", &cap->ci->netfs.inode, cap,
852 list_move_tail(&cap->session_caps, &s->s_caps);
854 dout("__touch_cap %p cap %p mds%d NOP, iterating over caps\n",
855 &cap->ci->netfs.inode, cap, s->s_mds);
861 * Check if we hold the given mask. If so, move the cap(s) to the
867 struct ceph_cap *cap;
880 cap = rb_entry(p, struct ceph_cap, ci_node);
881 if (!__cap_is_valid(cap))
883 if ((cap->issued & mask) == mask) {
884 dout("__ceph_caps_issued_mask ino 0x%llx cap %p issued %s"
885 " (mask %s)\n", ceph_ino(&ci->netfs.inode), cap,
886 ceph_cap_string(cap->issued),
889 __touch_cap(cap);
894 have |= cap->issued;
898 ceph_cap_string(cap->issued),
904 __touch_cap(cap);
907 cap = rb_entry(q, struct ceph_cap,
909 if (!__cap_is_valid(cap))
911 if (cap->issued & mask)
912 __touch_cap(cap);
942 struct ceph_cap *cap;
946 cap = rb_entry(p, struct ceph_cap, ci_node);
947 if (cap != ocap &&
948 (cap->implemented & ~cap->issued & mask))
1051 * wanted, by virtue of open file modes AND cap refs (buffered/cached data)
1073 struct ceph_cap *cap;
1078 cap = rb_entry(p, struct ceph_cap, ci_node);
1079 if (check && !__cap_is_valid(cap))
1081 if (cap == ci->i_auth_cap)
1082 mds_wanted |= cap->mds_wanted;
1084 mds_wanted |= (cap->mds_wanted & ~CEPH_CAP_ANY_FILE_WR);
1102 * Remove a cap. Take steps to deal with a racing iterate_session_caps.
1107 void __ceph_remove_cap(struct ceph_cap *cap, bool queue_release)
1109 struct ceph_mds_session *session = cap->session;
1110 struct ceph_inode_info *ci = cap->ci;
1116 dout("%s: cap inode is NULL\n", __func__);
1122 dout("__ceph_remove_cap %p from %p\n", cap, &ci->netfs.inode);
1126 /* remove from inode's cap rbtree, and clear auth cap */
1127 rb_erase(&cap->ci_node, &ci->i_caps);
1128 if (ci->i_auth_cap == cap)
1133 if (session->s_cap_iterator == cap) {
1134 /* not yet, we are iterating over this very cap */
1136 cap, cap->session);
1138 list_del_init(&cap->session_caps);
1141 cap->session = NULL;
1145 cap->ci = NULL;
1153 cap->cap_gen == atomic_read(&session->s_cap_gen))) {
1154 cap->queue_release = 1;
1156 __ceph_queue_cap_release(session, cap);
1160 cap->queue_release = 0;
1162 cap->cap_ino = ci->i_vino.ino;
1167 ceph_put_cap(mdsc, cap);
1181 void ceph_remove_cap(struct ceph_cap *cap, bool queue_release)
1183 struct ceph_inode_info *ci = cap->ci;
1188 dout("%s: cap inode is NULL\n", __func__);
1195 WARN_ON_ONCE(ci->i_auth_cap == cap &&
1200 __ceph_remove_cap(cap, queue_release);
1225 /* Marshal up the cap msg to the MDS */
1341 * Queue cap releases when an inode is dropped from our cache.
1352 struct ceph_cap *cap = rb_entry(p, struct ceph_cap, ci_node);
1354 ceph_remove_cap(cap, true);
1360 * Prepare to send a cap message to an MDS. Update the cap state, and populate
1362 * be done under the i_ceph_lock to guard against changes to cap state.
1367 static void __prep_cap(struct cap_msg_args *arg, struct ceph_cap *cap,
1371 struct ceph_inode_info *ci = cap->ci;
1377 held = cap->issued | cap->implemented;
1378 revoking = cap->implemented & ~cap->issued;
1381 dout("%s %p cap %p session %p %s -> %s (revoking %s)\n",
1382 __func__, inode, cap, cap->session,
1389 cap->issued &= retain; /* drop bits we don't want */
1395 arg->wake = cap->implemented & ~cap->issued;
1396 cap->implemented &= cap->issued | used;
1397 cap->mds_wanted = want;
1399 arg->session = cap->session;
1401 arg->cid = cap->cap_id;
1408 if (cap == ci->i_auth_cap) {
1431 arg->caps = cap->implemented;
1435 arg->seq = cap->seq;
1436 arg->issue_seq = cap->issue_seq;
1437 arg->mseq = cap->mseq;
1492 * Send a cap msg on the given inode.
1504 pr_err("error allocating cap msg: ino (%llx.%llx) flushing %s tid %llu, requeuing cap.\n",
1642 struct ceph_cap *cap = ci->i_auth_cap;
1646 if (!(cap && cap->session == session)) {
1647 dout("__flush_snaps %p auth cap %p not mds%d, "
1648 "stop\n", inode, cap, session->s_mds);
1672 ret = __send_flush_snap(inode, session, capsnap, cap->mseq,
1675 pr_err("__flush_snaps: error sending cap flushsnap, "
1704 dout(" no auth cap (migrating?), doing nothing\n");
1763 "but no auth cap (session was closed?)\n",
1783 dout(" inode %p now dirty snapc %p auth cap %p\n",
1834 * Remove cap_flush from the mdsc's or inode's flushing cap list.
1965 * CHECK_CAPS_AUTHONLY - we should only check the auth cap
1973 struct ceph_cap *cap;
2024 * the exclusive cap. So that MDS does not end up
2025 * revoking the shared cap on every create/unlink
2085 cap = rb_entry(p, struct ceph_cap, ci_node);
2088 if (mds >= cap->mds ||
2089 ((flags & CHECK_CAPS_AUTHONLY) && cap != ci->i_auth_cap))
2093 * If we have an auth cap, we don't need to consider any
2097 if (ci->i_auth_cap && cap != ci->i_auth_cap)
2100 revoking = cap->implemented & ~cap->issued;
2101 dout(" mds%d cap %p used %s issued %s implemented %s revoking %s\n",
2102 cap->mds, cap, ceph_cap_string(cap_used),
2103 ceph_cap_string(cap->issued),
2104 ceph_cap_string(cap->implemented),
2107 if (cap == ci->i_auth_cap &&
2108 (cap->issued & CEPH_CAP_FILE_WR)) {
2123 if (cap == ci->i_auth_cap) {
2138 ceph_cap_string(cap->implemented & ~cap->issued));
2159 if (want & ~cap->mds_wanted) {
2160 if (want & ~(cap->mds_wanted | cap->issued))
2162 if (!__cap_is_valid(cap))
2167 if ((cap->issued & ~retain) == 0)
2172 session = ceph_get_mds_session(cap->session);
2175 * cap message */
2176 if (cap == ci->i_auth_cap &&
2187 if (cap == ci->i_auth_cap && ci->i_dirty_caps) {
2202 mds = cap->mds; /* remember mds, so we don't repeat */
2204 __prep_cap(&arg, cap, CEPH_CAP_OP_UPDATE, mflags, cap_used,
2211 goto retry; /* retake i_ceph_lock and restart our cap scan. */
2244 struct ceph_cap *cap = ci->i_auth_cap;
2246 struct ceph_mds_session *session = cap->session;
2266 __prep_cap(&arg, cap, CEPH_CAP_OP_FLUSH, CEPH_CLIENT_CAPS_SYNC,
2268 (cap->issued | cap->implemented),
2515 struct ceph_cap *cap;
2538 cap = ci->i_auth_cap;
2539 if (!(cap && cap->session == session)) {
2540 pr_err("%p auth cap %p not mds%d ???\n",
2541 inode, cap, session->s_mds);
2550 dout("kick_flushing_caps %p cap %p tid %llu %s\n",
2551 inode, cap, cf->tid, ceph_cap_string(cf->caps));
2552 __prep_cap(&arg, cap, CEPH_CAP_OP_FLUSH,
2557 (cap->issued | cap->implemented),
2572 ret = __send_flush_snap(inode, session, capsnap, cap->mseq,
2576 "cap flushsnap, ino (%llx.%llx) "
2593 struct ceph_cap *cap;
2604 cap = ci->i_auth_cap;
2605 if (!(cap && cap->session == session)) {
2606 pr_err("%p auth cap %p not mds%d ???\n",
2607 &ci->netfs.inode, cap, session->s_mds);
2614 * if flushing caps were revoked, we re-send the cap flush
2616 * the cap flush message before issuing the flushing caps to
2619 if ((cap->issued & ci->i_flushing_caps) !=
2622 * numbers. make sure sequence numbers in cap flush
2624 cap->seq = 0;
2625 cap->issue_seq = 0;
2626 cap->mseq = 0;
2641 struct ceph_cap *cap;
2654 cap = ci->i_auth_cap;
2655 if (!(cap && cap->session == session)) {
2656 pr_err("%p auth cap %p not mds%d ???\n",
2657 &ci->netfs.inode, cap, session->s_mds);
2673 struct ceph_cap *cap = ci->i_auth_cap;
2684 &cap->session->s_cap_flushing);
2728 * Try to grab cap references. Specify those refs we @want, and the
2960 * Wait for caps, and take cap references. If we can't get a WR cap
3068 * drop cap refs first because getattr while
3101 * Take cap refs. Caller must already know we hold at least one ref
3142 * Release cap refs.
3144 * If we released the last ref on any given cap, call ceph_check_caps
3147 * If we are releasing a WR cap (from a sync write), finalize any affected
3307 * auth cap in the case of a forced unmount.
3401 * Handle a cap GRANT message from the MDS. (Note that a GRANT may
3402 * actually be a revocation if it specifies a smaller cap set.)
3408 struct ceph_cap *cap,
3422 bool was_stale = cap->cap_gen < atomic_read(&session->s_cap_gen);
3438 dout("handle_cap_grant inode %p cap %p mds%d seq %d %s\n",
3439 inode, cap, session->s_mds, seq, ceph_cap_string(newcaps));
3450 ((cap->issued & ~newcaps) & CEPH_CAP_FILE_CACHE) &&
3464 cap->issued = cap->implemented = CEPH_CAP_PIN;
3467 * auth mds of the inode changed. we received the cap export message,
3468 * but still haven't received the cap import message. handle_cap_export
3469 * updated the new auth MDS' cap.
3471 * "ceph_seq_cmp(seq, cap->seq) <= 0" means we are processing a message
3472 * that was sent before the cap import message. So don't remove caps.
3474 if (ceph_seq_cmp(seq, cap->seq) <= 0) {
3475 WARN_ON(cap != ci->i_auth_cap);
3476 WARN_ON(cap->cap_id != le64_to_cpu(grant->cap_id));
3477 seq = cap->seq;
3478 newcaps |= cap->issued;
3482 cap->cap_gen = atomic_read(&session->s_cap_gen);
3483 cap->seq = seq;
3485 __check_cap_issue(ci, cap, newcaps);
3508 pr_warn_ratelimited("%s: cap grant attempt to change fscrypt_auth on non-I_NEW inode (old len %d new len %d)\n",
3577 if (ci->i_auth_cap == cap && (newcaps & CEPH_CAP_ANY_FILE_WR)) {
3590 /* check cap bits */
3600 (wanted & ~(cap->mds_wanted | newcaps))) {
3602 * If mds is importing cap, prior cap messages that update
3605 * We don't send cap message to update 'wanted' if what we
3606 * want are already issued. If mds revokes caps, cap message
3615 if (cap->issued & ~newcaps) {
3616 int revoking = cap->issued & ~newcaps;
3619 ceph_cap_string(cap->issued),
3629 else if (cap == ci->i_auth_cap)
3630 check_caps = 1; /* check auth cap only */
3634 if (~cap->issued & newcaps)
3636 cap->issued = newcaps;
3637 cap->implemented |= newcaps;
3638 } else if (cap->issued == newcaps) {
3640 ceph_cap_string(cap->issued), ceph_cap_string(newcaps));
3642 dout("grant: %s -> %s\n", ceph_cap_string(cap->issued),
3645 if (cap == ci->i_auth_cap &&
3646 __ceph_caps_revoking_other(ci, cap, newcaps))
3649 cap->issued = newcaps;
3650 cap->implemented |= newcaps; /* add bits only, to
3655 BUG_ON(cap->issued & ~cap->implemented);
3659 cap->mds_wanted = 0;
3660 if (cap == ci->i_auth_cap)
3661 check_caps = 1; /* check auth cap only */
3675 if (ci->i_auth_cap == cap) {
3727 struct ceph_cap *cap)
3788 dout(" mds%d still flushing cap on %p\n",
3964 * indicated by mseq), make note of the migrating cap bits for the
3975 struct ceph_cap *cap, *tcap, *new_cap = NULL;
3998 cap = __get_cap_for_mds(ci, mds);
3999 if (!cap || cap->cap_id != le64_to_cpu(ex->cap_id))
4003 ceph_remove_cap(cap, false);
4008 * now we know we haven't received the cap import message yet
4009 * because the exported cap still exist.
4012 issued = cap->issued;
4013 if (issued != cap->implemented)
4017 ceph_vinop(inode), mds, cap->seq, cap->mseq,
4019 ceph_cap_string(cap->implemented));
4027 dout(" updating import cap %p mds%d\n", tcap, target);
4033 if (cap == ci->i_auth_cap) {
4038 ceph_remove_cap(cap, false);
4042 int flag = (cap == ci->i_auth_cap) ? CEPH_CAP_FLAG_AUTH : 0;
4055 ceph_remove_cap(cap, false);
4097 * Handle cap IMPORT.
4108 struct ceph_cap *cap, *ocap, *new_cap = NULL;
4131 cap = __get_cap_for_mds(ci, mds);
4132 if (!cap) {
4139 cap = new_cap;
4155 dout(" remove export cap %p mds%d flags %d\n",
4172 *target_cap = cap;
4225 * based on the cap op.
4233 struct ceph_cap *cap;
4355 dout(" mds%d seq %lld cap seq %u\n", session->s_mds, session->s_seq,
4374 /* these will work even if we don't have a cap yet */
4402 &cap, &extra_info.issued);
4403 handle_cap_grant(inode, session, cap,
4410 /* the rest require a cap */
4412 cap = __get_cap_for_mds(ceph_inode(inode), session->s_mds);
4413 if (!cap) {
4414 dout(" no cap on %p ino %llx.%llx from mds%d\n",
4435 handle_cap_grant(inode, session, cap,
4441 h, session, cap);
4454 pr_err("ceph_handle_caps: unknown cap op %d %s\n", op,
4476 * send any cap release message to try to move things
4478 * cap).
4481 cap = ceph_get_cap(mdsc, NULL);
4482 cap->cap_ino = vino.ino;
4483 cap->queue_release = 1;
4484 cap->cap_id = le64_to_cpu(h->cap_id);
4485 cap->mseq = mseq;
4486 cap->seq = seq;
4487 cap->issue_seq = seq;
4489 __ceph_queue_cap_release(session, cap);
4502 * Delayed work handler to process end of delayed cap release LRU list.
4685 * Helpers for embedding cap and dentry lease releases into mds
4696 struct ceph_cap *cap;
4712 cap = __get_cap_for_mds(ci, mds);
4713 if (cap && __cap_is_valid(cap)) {
4714 unless &= cap->issued;
4726 if (force || (cap->issued & drop)) {
4727 if (cap->issued & drop) {
4729 dout("encode_inode_release %p cap %p "
4730 "%s -> %s, wanted %s -> %s\n", inode, cap,
4731 ceph_cap_string(cap->issued),
4732 ceph_cap_string(cap->issued & ~drop),
4733 ceph_cap_string(cap->mds_wanted),
4736 cap->issued &= ~drop;
4737 cap->implemented &= ~drop;
4738 cap->mds_wanted = wanted;
4739 if (cap == ci->i_auth_cap &&
4743 dout("encode_inode_release %p cap %p %s"
4744 " (force)\n", inode, cap,
4745 ceph_cap_string(cap->issued));
4749 rel->cap_id = cpu_to_le64(cap->cap_id);
4750 rel->seq = cpu_to_le32(cap->seq);
4751 rel->issue_seq = cpu_to_le32(cap->issue_seq);
4752 rel->mseq = cpu_to_le32(cap->mseq);
4753 rel->caps = cpu_to_le32(cap->implemented);
4754 rel->wanted = cpu_to_le32(cap->mds_wanted);
4760 dout("encode_inode_release %p cap %p %s (noop)\n",
4761 inode, cap, ceph_cap_string(cap->issued));
4854 int ceph_purge_inode_cap(struct inode *inode, struct ceph_cap *cap, bool *invalidate)
4865 dout("removing cap %p, ci is %p, inode is %p\n",
4866 cap, ci, &ci->netfs.inode);
4868 is_auth = (cap == ci->i_auth_cap);
4869 __ceph_remove_cap(cap, false);
4882 /* trash all of the cap flushes for this inode */