Lines Matching +full:no +full:- +full:insert +full:- +full:detect
14 * - Redistributions of source code must retain the above
18 * - Redistributions in binary form must reproduce the above
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
36 #include <linux/dma-mapping.h> /* for DMA_*_DEVICE */
42 * - build with sparse
43 * - should we detect duplicate keys on a socket? hmm.
44 * - an rdma is an mlock, apply rlimit?
57 if ((vec->addr + vec->bytes <= vec->addr) || in rds_pages_in_vec()
58 (vec->bytes > (u64)UINT_MAX)) in rds_pages_in_vec()
61 return ((vec->addr + vec->bytes + PAGE_SIZE - 1) >> PAGE_SHIFT) - in rds_pages_in_vec()
62 (vec->addr >> PAGE_SHIFT); in rds_pages_in_vec()
66 struct rds_mr *insert) in rds_mr_tree_walk() argument
68 struct rb_node **p = &root->rb_node; in rds_mr_tree_walk()
76 if (key < mr->r_key) in rds_mr_tree_walk()
77 p = &(*p)->rb_left; in rds_mr_tree_walk()
78 else if (key > mr->r_key) in rds_mr_tree_walk()
79 p = &(*p)->rb_right; in rds_mr_tree_walk()
84 if (insert) { in rds_mr_tree_walk()
85 rb_link_node(&insert->r_rb_node, parent, p); in rds_mr_tree_walk()
86 rb_insert_color(&insert->r_rb_node, root); in rds_mr_tree_walk()
87 kref_get(&insert->r_kref); in rds_mr_tree_walk()
93 * Destroy the transport-specific part of a MR.
97 struct rds_sock *rs = mr->r_sock; in rds_destroy_mr()
102 mr->r_key, kref_read(&mr->r_kref)); in rds_destroy_mr()
104 spin_lock_irqsave(&rs->rs_rdma_lock, flags); in rds_destroy_mr()
105 if (!RB_EMPTY_NODE(&mr->r_rb_node)) in rds_destroy_mr()
106 rb_erase(&mr->r_rb_node, &rs->rs_rdma_keys); in rds_destroy_mr()
107 trans_private = mr->r_trans_private; in rds_destroy_mr()
108 mr->r_trans_private = NULL; in rds_destroy_mr()
109 spin_unlock_irqrestore(&rs->rs_rdma_lock, flags); in rds_destroy_mr()
112 mr->r_trans->free_mr(trans_private, mr->r_invalidate); in rds_destroy_mr()
134 spin_lock_irqsave(&rs->rs_rdma_lock, flags); in rds_rdma_drop_keys()
135 while ((node = rb_first(&rs->rs_rdma_keys))) { in rds_rdma_drop_keys()
137 if (mr->r_trans == rs->rs_transport) in rds_rdma_drop_keys()
138 mr->r_invalidate = 0; in rds_rdma_drop_keys()
139 rb_erase(&mr->r_rb_node, &rs->rs_rdma_keys); in rds_rdma_drop_keys()
140 RB_CLEAR_NODE(&mr->r_rb_node); in rds_rdma_drop_keys()
141 spin_unlock_irqrestore(&rs->rs_rdma_lock, flags); in rds_rdma_drop_keys()
142 kref_put(&mr->r_kref, __rds_put_mr_final); in rds_rdma_drop_keys()
143 spin_lock_irqsave(&rs->rs_rdma_lock, flags); in rds_rdma_drop_keys()
145 spin_unlock_irqrestore(&rs->rs_rdma_lock, flags); in rds_rdma_drop_keys()
147 if (rs->rs_transport && rs->rs_transport->flush_mrs) in rds_rdma_drop_keys()
148 rs->rs_transport->flush_mrs(); in rds_rdma_drop_keys()
166 ret = -EFAULT; in rds_pin_pages()
188 if (ipv6_addr_any(&rs->rs_bound_addr) || !rs->rs_transport) { in __rds_rdma_map()
189 ret = -ENOTCONN; /* XXX not a great errno */ in __rds_rdma_map()
193 if (!rs->rs_transport->get_mr) { in __rds_rdma_map()
194 ret = -EOPNOTSUPP; in __rds_rdma_map()
201 if (((args->vec.addr + args->vec.bytes) < args->vec.addr) || in __rds_rdma_map()
202 PAGE_ALIGN(args->vec.addr + args->vec.bytes) < in __rds_rdma_map()
203 (args->vec.addr + args->vec.bytes)) { in __rds_rdma_map()
204 ret = -EINVAL; in __rds_rdma_map()
209 ret = -EPERM; in __rds_rdma_map()
213 nr_pages = rds_pages_in_vec(&args->vec); in __rds_rdma_map()
215 ret = -EINVAL; in __rds_rdma_map()
222 if ((nr_pages - 1) > (RDS_MAX_MSG_SIZE >> PAGE_SHIFT)) { in __rds_rdma_map()
223 ret = -EMSGSIZE; in __rds_rdma_map()
228 args->vec.addr, args->vec.bytes, nr_pages); in __rds_rdma_map()
233 ret = -ENOMEM; in __rds_rdma_map()
239 ret = -ENOMEM; in __rds_rdma_map()
243 kref_init(&mr->r_kref); in __rds_rdma_map()
244 RB_CLEAR_NODE(&mr->r_rb_node); in __rds_rdma_map()
245 mr->r_trans = rs->rs_transport; in __rds_rdma_map()
246 mr->r_sock = rs; in __rds_rdma_map()
248 if (args->flags & RDS_RDMA_USE_ONCE) in __rds_rdma_map()
249 mr->r_use_once = 1; in __rds_rdma_map()
250 if (args->flags & RDS_RDMA_INVALIDATE) in __rds_rdma_map()
251 mr->r_invalidate = 1; in __rds_rdma_map()
252 if (args->flags & RDS_RDMA_READWRITE) in __rds_rdma_map()
253 mr->r_write = 1; in __rds_rdma_map()
261 * For now we have no flag that tells us whether the mapping is in __rds_rdma_map()
265 ret = rds_pin_pages(args->vec.addr, nr_pages, pages, 1); in __rds_rdma_map()
266 if (ret == -EOPNOTSUPP) { in __rds_rdma_map()
274 ret = -ENOMEM; in __rds_rdma_map()
289 * flushed to RAM, so no dma_sync is needed here. */ in __rds_rdma_map()
290 trans_private = rs->rs_transport->get_mr( in __rds_rdma_map()
291 sg, nents, rs, &mr->r_key, cp ? cp->cp_conn : NULL, in __rds_rdma_map()
292 args->vec.addr, args->vec.bytes, in __rds_rdma_map()
305 if (ret == -ENODEV && cp) in __rds_rdma_map()
306 rds_conn_connect_if_down(cp->cp_conn); in __rds_rdma_map()
310 mr->r_trans_private = trans_private; in __rds_rdma_map()
313 mr->r_key, (void *)(unsigned long) args->cookie_addr); in __rds_rdma_map()
320 cookie = rds_rdma_make_cookie(mr->r_key, 0); in __rds_rdma_map()
322 cookie = rds_rdma_make_cookie(mr->r_key, in __rds_rdma_map()
323 args->vec.addr & ~PAGE_MASK); in __rds_rdma_map()
327 if (args->cookie_addr && in __rds_rdma_map()
328 put_user(cookie, (u64 __user *)(unsigned long)args->cookie_addr)) { in __rds_rdma_map()
333 ret = -EFAULT; in __rds_rdma_map()
339 spin_lock_irqsave(&rs->rs_rdma_lock, flags); in __rds_rdma_map()
340 found = rds_mr_tree_walk(&rs->rs_rdma_keys, mr->r_key, mr); in __rds_rdma_map()
341 spin_unlock_irqrestore(&rs->rs_rdma_lock, flags); in __rds_rdma_map()
345 rdsdebug("RDS: get_mr key is %x\n", mr->r_key); in __rds_rdma_map()
347 kref_get(&mr->r_kref); in __rds_rdma_map()
355 kref_put(&mr->r_kref, __rds_put_mr_final); in __rds_rdma_map()
364 return -EINVAL; in rds_get_mr()
367 return -EFAULT; in rds_get_mr()
378 return -EINVAL; in rds_get_mr_for_dest()
382 return -EFAULT; in rds_get_mr_for_dest()
406 return -EINVAL; in rds_free_mr()
409 return -EFAULT; in rds_free_mr()
411 /* Special case - a null cookie means flush all unused MRs */ in rds_free_mr()
413 if (!rs->rs_transport || !rs->rs_transport->flush_mrs) in rds_free_mr()
414 return -EINVAL; in rds_free_mr()
415 rs->rs_transport->flush_mrs(); in rds_free_mr()
423 spin_lock_irqsave(&rs->rs_rdma_lock, flags); in rds_free_mr()
424 mr = rds_mr_tree_walk(&rs->rs_rdma_keys, rds_rdma_cookie_key(args.cookie), NULL); in rds_free_mr()
426 rb_erase(&mr->r_rb_node, &rs->rs_rdma_keys); in rds_free_mr()
427 RB_CLEAR_NODE(&mr->r_rb_node); in rds_free_mr()
429 mr->r_invalidate = 1; in rds_free_mr()
431 spin_unlock_irqrestore(&rs->rs_rdma_lock, flags); in rds_free_mr()
434 return -EINVAL; in rds_free_mr()
436 kref_put(&mr->r_kref, __rds_put_mr_final); in rds_free_mr()
451 spin_lock_irqsave(&rs->rs_rdma_lock, flags); in rds_rdma_unuse()
452 mr = rds_mr_tree_walk(&rs->rs_rdma_keys, r_key, NULL); in rds_rdma_unuse()
456 spin_unlock_irqrestore(&rs->rs_rdma_lock, flags); in rds_rdma_unuse()
463 kref_get(&mr->r_kref); in rds_rdma_unuse()
466 * that no other thread can find it and free it. in rds_rdma_unuse()
468 if (mr->r_use_once || force) { in rds_rdma_unuse()
469 rb_erase(&mr->r_rb_node, &rs->rs_rdma_keys); in rds_rdma_unuse()
470 RB_CLEAR_NODE(&mr->r_rb_node); in rds_rdma_unuse()
473 spin_unlock_irqrestore(&rs->rs_rdma_lock, flags); in rds_rdma_unuse()
478 if (mr->r_trans->sync_mr) in rds_rdma_unuse()
479 mr->r_trans->sync_mr(mr->r_trans_private, DMA_FROM_DEVICE); in rds_rdma_unuse()
482 kref_put(&mr->r_kref, __rds_put_mr_final); in rds_rdma_unuse()
487 kref_put(&mr->r_kref, __rds_put_mr_final); in rds_rdma_unuse()
494 if (ro->op_odp_mr) { in rds_rdma_free_op()
495 kref_put(&ro->op_odp_mr->r_kref, __rds_put_mr_final); in rds_rdma_free_op()
497 for (i = 0; i < ro->op_nents; i++) { in rds_rdma_free_op()
498 struct page *page = sg_page(&ro->op_sg[i]); in rds_rdma_free_op()
504 unpin_user_pages_dirty_lock(&page, 1, !ro->op_write); in rds_rdma_free_op()
508 kfree(ro->op_notifier); in rds_rdma_free_op()
509 ro->op_notifier = NULL; in rds_rdma_free_op()
510 ro->op_active = 0; in rds_rdma_free_op()
511 ro->op_odp_mr = NULL; in rds_rdma_free_op()
516 struct page *page = sg_page(ao->op_sg); in rds_atomic_free_op()
523 kfree(ao->op_notifier); in rds_atomic_free_op()
524 ao->op_notifier = NULL; in rds_atomic_free_op()
525 ao->op_active = 0; in rds_atomic_free_op()
542 return -EINVAL; in rds_rdma_pages()
551 return -EINVAL; in rds_rdma_pages()
566 local_vec = (struct rds_iovec __user *)(unsigned long) args->local_vec_addr; in rds_rdma_extra_size()
568 if (args->nr_local == 0) in rds_rdma_extra_size()
569 return -EINVAL; in rds_rdma_extra_size()
571 if (args->nr_local > UIO_MAXIOV) in rds_rdma_extra_size()
572 return -EMSGSIZE; in rds_rdma_extra_size()
574 iov->iov = kcalloc(args->nr_local, in rds_rdma_extra_size()
577 if (!iov->iov) in rds_rdma_extra_size()
578 return -ENOMEM; in rds_rdma_extra_size()
580 vec = &iov->iov[0]; in rds_rdma_extra_size()
582 if (copy_from_user(vec, local_vec, args->nr_local * in rds_rdma_extra_size()
584 return -EFAULT; in rds_rdma_extra_size()
585 iov->len = args->nr_local; in rds_rdma_extra_size()
588 for (i = 0; i < args->nr_local; i++, vec++) { in rds_rdma_extra_size()
592 return -EINVAL; in rds_rdma_extra_size()
601 return -EINVAL; in rds_rdma_extra_size()
616 struct rm_rdma_op *op = &rm->rdma; in rds_cmsg_rdma_args()
625 if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct rds_rdma_args)) in rds_cmsg_rdma_args()
626 || rm->rdma.op_active) in rds_cmsg_rdma_args()
627 return -EINVAL; in rds_cmsg_rdma_args()
631 if (ipv6_addr_any(&rs->rs_bound_addr)) { in rds_cmsg_rdma_args()
632 ret = -ENOTCONN; /* XXX not a great errno */ in rds_cmsg_rdma_args()
636 if (args->nr_local > UIO_MAXIOV) { in rds_cmsg_rdma_args()
637 ret = -EMSGSIZE; in rds_cmsg_rdma_args()
641 if (vec->len != args->nr_local) { in rds_cmsg_rdma_args()
642 ret = -EINVAL; in rds_cmsg_rdma_args()
645 /* odp-mr is not supported for multiple requests within one message */ in rds_cmsg_rdma_args()
646 if (args->nr_local != 1) in rds_cmsg_rdma_args()
649 iovs = vec->iov; in rds_cmsg_rdma_args()
651 nr_pages = rds_rdma_pages(iovs, args->nr_local); in rds_cmsg_rdma_args()
653 ret = -EINVAL; in rds_cmsg_rdma_args()
659 ret = -ENOMEM; in rds_cmsg_rdma_args()
663 op->op_write = !!(args->flags & RDS_RDMA_READWRITE); in rds_cmsg_rdma_args()
664 op->op_fence = !!(args->flags & RDS_RDMA_FENCE); in rds_cmsg_rdma_args()
665 op->op_notify = !!(args->flags & RDS_RDMA_NOTIFY_ME); in rds_cmsg_rdma_args()
666 op->op_silent = !!(args->flags & RDS_RDMA_SILENT); in rds_cmsg_rdma_args()
667 op->op_active = 1; in rds_cmsg_rdma_args()
668 op->op_recverr = rs->rs_recverr; in rds_cmsg_rdma_args()
669 op->op_odp_mr = NULL; in rds_cmsg_rdma_args()
672 op->op_sg = rds_message_alloc_sgs(rm, nr_pages); in rds_cmsg_rdma_args()
673 if (IS_ERR(op->op_sg)) { in rds_cmsg_rdma_args()
674 ret = PTR_ERR(op->op_sg); in rds_cmsg_rdma_args()
678 if (op->op_notify || op->op_recverr) { in rds_cmsg_rdma_args()
684 op->op_notifier = kmalloc(sizeof(struct rds_notifier), GFP_KERNEL); in rds_cmsg_rdma_args()
685 if (!op->op_notifier) { in rds_cmsg_rdma_args()
686 ret = -ENOMEM; in rds_cmsg_rdma_args()
689 op->op_notifier->n_user_token = args->user_token; in rds_cmsg_rdma_args()
690 op->op_notifier->n_status = RDS_RDMA_SUCCESS; in rds_cmsg_rdma_args()
700 op->op_rkey = rds_rdma_cookie_key(args->cookie); in rds_cmsg_rdma_args()
701 op->op_remote_addr = args->remote_vec.addr + rds_rdma_cookie_offset(args->cookie); in rds_cmsg_rdma_args()
706 (unsigned long long)args->nr_local, in rds_cmsg_rdma_args()
707 (unsigned long long)args->remote_vec.addr, in rds_cmsg_rdma_args()
708 op->op_rkey); in rds_cmsg_rdma_args()
710 for (i = 0; i < args->nr_local; i++) { in rds_cmsg_rdma_args()
715 rs->rs_user_addr = iov->addr; in rds_cmsg_rdma_args()
716 rs->rs_user_bytes = iov->bytes; in rds_cmsg_rdma_args()
721 ret = rds_pin_pages(iov->addr, nr, pages, !op->op_write); in rds_cmsg_rdma_args()
723 (odp_supported && ret <= 0 && ret != -EOPNOTSUPP)) in rds_cmsg_rdma_args()
726 if (ret == -EOPNOTSUPP) { in rds_cmsg_rdma_args()
729 if (!rs->rs_transport->get_mr) { in rds_cmsg_rdma_args()
730 ret = -EOPNOTSUPP; in rds_cmsg_rdma_args()
736 ret = -ENOMEM; in rds_cmsg_rdma_args()
739 RB_CLEAR_NODE(&local_odp_mr->r_rb_node); in rds_cmsg_rdma_args()
740 kref_init(&local_odp_mr->r_kref); in rds_cmsg_rdma_args()
741 local_odp_mr->r_trans = rs->rs_transport; in rds_cmsg_rdma_args()
742 local_odp_mr->r_sock = rs; in rds_cmsg_rdma_args()
743 local_odp_mr->r_trans_private = in rds_cmsg_rdma_args()
744 rs->rs_transport->get_mr( in rds_cmsg_rdma_args()
745 NULL, 0, rs, &local_odp_mr->r_key, NULL, in rds_cmsg_rdma_args()
746 iov->addr, iov->bytes, ODP_VIRTUAL); in rds_cmsg_rdma_args()
747 if (IS_ERR(local_odp_mr->r_trans_private)) { in rds_cmsg_rdma_args()
748 ret = PTR_ERR(local_odp_mr->r_trans_private); in rds_cmsg_rdma_args()
750 local_odp_mr->r_trans_private); in rds_cmsg_rdma_args()
752 ret = -EOPNOTSUPP; in rds_cmsg_rdma_args()
756 local_odp_mr, local_odp_mr->r_trans_private); in rds_cmsg_rdma_args()
757 op->op_odp_mr = local_odp_mr; in rds_cmsg_rdma_args()
758 op->op_odp_addr = iov->addr; in rds_cmsg_rdma_args()
761 rdsdebug("RDS: nr_bytes %u nr %u iov->bytes %llu iov->addr %llx\n", in rds_cmsg_rdma_args()
762 nr_bytes, nr, iov->bytes, iov->addr); in rds_cmsg_rdma_args()
764 nr_bytes += iov->bytes; in rds_cmsg_rdma_args()
767 unsigned int offset = iov->addr & ~PAGE_MASK; in rds_cmsg_rdma_args()
770 sg = &op->op_sg[op->op_nents + j]; in rds_cmsg_rdma_args()
772 min_t(unsigned int, iov->bytes, PAGE_SIZE - offset), in rds_cmsg_rdma_args()
775 sg_dma_len(sg) = sg->length; in rds_cmsg_rdma_args()
776 rdsdebug("RDS: sg->offset %x sg->len %x iov->addr %llx iov->bytes %llu\n", in rds_cmsg_rdma_args()
777 sg->offset, sg->length, iov->addr, iov->bytes); in rds_cmsg_rdma_args()
779 iov->addr += sg->length; in rds_cmsg_rdma_args()
780 iov->bytes -= sg->length; in rds_cmsg_rdma_args()
783 op->op_nents += nr; in rds_cmsg_rdma_args()
786 if (nr_bytes > args->remote_vec.bytes) { in rds_cmsg_rdma_args()
789 (unsigned int) args->remote_vec.bytes); in rds_cmsg_rdma_args()
790 ret = -EINVAL; in rds_cmsg_rdma_args()
793 op->op_bytes = nr_bytes; in rds_cmsg_rdma_args()
819 if (cmsg->cmsg_len < CMSG_LEN(sizeof(rds_rdma_cookie_t)) || in rds_cmsg_rdma_dest()
820 rm->m_rdma_cookie != 0) in rds_cmsg_rdma_dest()
821 return -EINVAL; in rds_cmsg_rdma_dest()
823 memcpy(&rm->m_rdma_cookie, CMSG_DATA(cmsg), sizeof(rm->m_rdma_cookie)); in rds_cmsg_rdma_dest()
830 r_key = rds_rdma_cookie_key(rm->m_rdma_cookie); in rds_cmsg_rdma_dest()
832 spin_lock_irqsave(&rs->rs_rdma_lock, flags); in rds_cmsg_rdma_dest()
833 mr = rds_mr_tree_walk(&rs->rs_rdma_keys, r_key, NULL); in rds_cmsg_rdma_dest()
835 err = -EINVAL; /* invalid r_key */ in rds_cmsg_rdma_dest()
837 kref_get(&mr->r_kref); in rds_cmsg_rdma_dest()
838 spin_unlock_irqrestore(&rs->rs_rdma_lock, flags); in rds_cmsg_rdma_dest()
841 mr->r_trans->sync_mr(mr->r_trans_private, in rds_cmsg_rdma_dest()
843 rm->rdma.op_rdma_mr = mr; in rds_cmsg_rdma_dest()
851 * in rm->m_rdma_cookie. This causes it to be sent along to the peer
857 if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct rds_get_mr_args)) || in rds_cmsg_rdma_map()
858 rm->m_rdma_cookie != 0) in rds_cmsg_rdma_map()
859 return -EINVAL; in rds_cmsg_rdma_map()
861 return __rds_rdma_map(rs, CMSG_DATA(cmsg), &rm->m_rdma_cookie, in rds_cmsg_rdma_map()
862 &rm->rdma.op_rdma_mr, rm->m_conn_path); in rds_cmsg_rdma_map()
875 if (cmsg->cmsg_len < CMSG_LEN(sizeof(struct rds_atomic_args)) in rds_cmsg_atomic()
876 || rm->atomic.op_active) in rds_cmsg_atomic()
877 return -EINVAL; in rds_cmsg_atomic()
882 switch (cmsg->cmsg_type) { in rds_cmsg_atomic()
884 rm->atomic.op_type = RDS_ATOMIC_TYPE_FADD; in rds_cmsg_atomic()
885 rm->atomic.op_m_fadd.add = args->fadd.add; in rds_cmsg_atomic()
886 rm->atomic.op_m_fadd.nocarry_mask = 0; in rds_cmsg_atomic()
889 rm->atomic.op_type = RDS_ATOMIC_TYPE_FADD; in rds_cmsg_atomic()
890 rm->atomic.op_m_fadd.add = args->m_fadd.add; in rds_cmsg_atomic()
891 rm->atomic.op_m_fadd.nocarry_mask = args->m_fadd.nocarry_mask; in rds_cmsg_atomic()
894 rm->atomic.op_type = RDS_ATOMIC_TYPE_CSWP; in rds_cmsg_atomic()
895 rm->atomic.op_m_cswp.compare = args->cswp.compare; in rds_cmsg_atomic()
896 rm->atomic.op_m_cswp.swap = args->cswp.swap; in rds_cmsg_atomic()
897 rm->atomic.op_m_cswp.compare_mask = ~0; in rds_cmsg_atomic()
898 rm->atomic.op_m_cswp.swap_mask = ~0; in rds_cmsg_atomic()
901 rm->atomic.op_type = RDS_ATOMIC_TYPE_CSWP; in rds_cmsg_atomic()
902 rm->atomic.op_m_cswp.compare = args->m_cswp.compare; in rds_cmsg_atomic()
903 rm->atomic.op_m_cswp.swap = args->m_cswp.swap; in rds_cmsg_atomic()
904 rm->atomic.op_m_cswp.compare_mask = args->m_cswp.compare_mask; in rds_cmsg_atomic()
905 rm->atomic.op_m_cswp.swap_mask = args->m_cswp.swap_mask; in rds_cmsg_atomic()
911 rm->atomic.op_notify = !!(args->flags & RDS_RDMA_NOTIFY_ME); in rds_cmsg_atomic()
912 rm->atomic.op_silent = !!(args->flags & RDS_RDMA_SILENT); in rds_cmsg_atomic()
913 rm->atomic.op_active = 1; in rds_cmsg_atomic()
914 rm->atomic.op_recverr = rs->rs_recverr; in rds_cmsg_atomic()
915 rm->atomic.op_sg = rds_message_alloc_sgs(rm, 1); in rds_cmsg_atomic()
916 if (IS_ERR(rm->atomic.op_sg)) { in rds_cmsg_atomic()
917 ret = PTR_ERR(rm->atomic.op_sg); in rds_cmsg_atomic()
921 /* verify 8 byte-aligned */ in rds_cmsg_atomic()
922 if (args->local_addr & 0x7) { in rds_cmsg_atomic()
923 ret = -EFAULT; in rds_cmsg_atomic()
927 ret = rds_pin_pages(args->local_addr, 1, &page, 1); in rds_cmsg_atomic()
932 sg_set_page(rm->atomic.op_sg, page, 8, offset_in_page(args->local_addr)); in rds_cmsg_atomic()
934 if (rm->atomic.op_notify || rm->atomic.op_recverr) { in rds_cmsg_atomic()
940 rm->atomic.op_notifier = kmalloc(sizeof(*rm->atomic.op_notifier), GFP_KERNEL); in rds_cmsg_atomic()
941 if (!rm->atomic.op_notifier) { in rds_cmsg_atomic()
942 ret = -ENOMEM; in rds_cmsg_atomic()
946 rm->atomic.op_notifier->n_user_token = args->user_token; in rds_cmsg_atomic()
947 rm->atomic.op_notifier->n_status = RDS_RDMA_SUCCESS; in rds_cmsg_atomic()
950 rm->atomic.op_rkey = rds_rdma_cookie_key(args->cookie); in rds_cmsg_atomic()
951 rm->atomic.op_remote_addr = args->remote_addr + rds_rdma_cookie_offset(args->cookie); in rds_cmsg_atomic()
957 rm->atomic.op_active = 0; in rds_cmsg_atomic()
958 kfree(rm->atomic.op_notifier); in rds_cmsg_atomic()