Lines Matching +full:virtio +full:- +full:pci
1 // SPDX-License-Identifier: GPL-2.0
3 * virtio-fs: Virtio Filesystem
9 #include <linux/pci.h>
12 #include <linux/virtio.h>
21 /* List of virtio-fs device instances and a lock for the list. Also provides
34 /* Per-virtqueue state */
37 struct virtqueue *vq; /* protected by ->lock */
49 /* A virtio-fs device instance */
98 struct fuse_fs_context *ctx = fc->fs_private; in virtio_fs_parse_param()
107 ctx->dax = 1; in virtio_fs_parse_param()
110 return -EINVAL; in virtio_fs_parse_param()
118 struct fuse_fs_context *ctx = fc->fs_private; in virtio_fs_free_fc()
125 struct virtio_fs *fs = vq->vdev->priv; in vq_to_fsvq()
127 return &fs->vqs[vq->index]; in vq_to_fsvq()
132 return &vq_to_fsvq(vq)->fud->pq; in vq_to_fpq()
135 /* Should be called with fsvq->lock held. */
138 fsvq->in_flight++; in inc_in_flight_req()
141 /* Should be called with fsvq->lock held. */
144 WARN_ON(fsvq->in_flight <= 0); in dec_in_flight_req()
145 fsvq->in_flight--; in dec_in_flight_req()
146 if (!fsvq->in_flight) in dec_in_flight_req()
147 complete(&fsvq->in_flight_zero); in dec_in_flight_req()
154 kfree(vfs->vqs); in release_virtio_fs_obj()
161 kref_put(&fs->refcount, release_virtio_fs_obj); in virtio_fs_put()
166 struct virtio_fs *vfs = fiq->priv; in virtio_fs_fiq_release()
175 WARN_ON(fsvq->in_flight < 0); in virtio_fs_drain_queue()
178 spin_lock(&fsvq->lock); in virtio_fs_drain_queue()
179 if (fsvq->in_flight) { in virtio_fs_drain_queue()
183 reinit_completion(&fsvq->in_flight_zero); in virtio_fs_drain_queue()
184 spin_unlock(&fsvq->lock); in virtio_fs_drain_queue()
185 wait_for_completion(&fsvq->in_flight_zero); in virtio_fs_drain_queue()
187 spin_unlock(&fsvq->lock); in virtio_fs_drain_queue()
190 flush_work(&fsvq->done_work); in virtio_fs_drain_queue()
191 flush_delayed_work(&fsvq->dispatch_work); in virtio_fs_drain_queue()
199 for (i = 0; i < fs->nvqs; i++) { in virtio_fs_drain_all_queues_locked()
200 fsvq = &fs->vqs[i]; in virtio_fs_drain_all_queues_locked()
207 /* Provides mutual exclusion between ->remove and ->kill_sb in virtio_fs_drain_all_queues()
223 for (i = 0; i < fs->nvqs; i++) { in virtio_fs_start_all_queues()
224 fsvq = &fs->vqs[i]; in virtio_fs_start_all_queues()
225 spin_lock(&fsvq->lock); in virtio_fs_start_all_queues()
226 fsvq->connected = true; in virtio_fs_start_all_queues()
227 spin_unlock(&fsvq->lock); in virtio_fs_start_all_queues()
231 /* Add a new instance to the list or return -EEXIST if tag name exists*/
240 if (strcmp(fs->tag, fs2->tag) == 0) in virtio_fs_add_instance()
245 list_add_tail(&fs->list, &virtio_fs_instances); in virtio_fs_add_instance()
250 return -EEXIST; in virtio_fs_add_instance()
262 if (strcmp(fs->tag, tag) == 0) { in virtio_fs_find_instance()
263 kref_get(&fs->refcount); in virtio_fs_find_instance()
280 for (i = 0; i < fs->nvqs; i++) { in virtio_fs_free_devs()
281 struct virtio_fs_vq *fsvq = &fs->vqs[i]; in virtio_fs_free_devs()
283 if (!fsvq->fud) in virtio_fs_free_devs()
286 fuse_dev_free(fsvq->fud); in virtio_fs_free_devs()
287 fsvq->fud = NULL; in virtio_fs_free_devs()
291 /* Read filesystem name from virtio config into fs->tag (must kfree()). */
302 return -EINVAL; /* empty tag */ in virtio_fs_read_tag()
306 len = end - tag_buf; in virtio_fs_read_tag()
307 fs->tag = devm_kmalloc(&vdev->dev, len + 1, GFP_KERNEL); in virtio_fs_read_tag()
308 if (!fs->tag) in virtio_fs_read_tag()
309 return -ENOMEM; in virtio_fs_read_tag()
310 memcpy(fs->tag, tag_buf, len); in virtio_fs_read_tag()
311 fs->tag[len] = '\0'; in virtio_fs_read_tag()
320 struct virtqueue *vq = fsvq->vq; in virtio_fs_hiprio_done_work()
323 spin_lock(&fsvq->lock); in virtio_fs_hiprio_done_work()
335 spin_unlock(&fsvq->lock); in virtio_fs_hiprio_done_work()
345 pr_debug("virtio-fs: worker %s called.\n", __func__); in virtio_fs_request_dispatch_work()
347 spin_lock(&fsvq->lock); in virtio_fs_request_dispatch_work()
348 req = list_first_entry_or_null(&fsvq->end_reqs, struct fuse_req, in virtio_fs_request_dispatch_work()
351 spin_unlock(&fsvq->lock); in virtio_fs_request_dispatch_work()
355 list_del_init(&req->list); in virtio_fs_request_dispatch_work()
356 spin_unlock(&fsvq->lock); in virtio_fs_request_dispatch_work()
362 spin_lock(&fsvq->lock); in virtio_fs_request_dispatch_work()
363 req = list_first_entry_or_null(&fsvq->queued_reqs, in virtio_fs_request_dispatch_work()
366 spin_unlock(&fsvq->lock); in virtio_fs_request_dispatch_work()
369 list_del_init(&req->list); in virtio_fs_request_dispatch_work()
370 spin_unlock(&fsvq->lock); in virtio_fs_request_dispatch_work()
374 if (ret == -ENOMEM || ret == -ENOSPC) { in virtio_fs_request_dispatch_work()
375 spin_lock(&fsvq->lock); in virtio_fs_request_dispatch_work()
376 list_add_tail(&req->list, &fsvq->queued_reqs); in virtio_fs_request_dispatch_work()
377 schedule_delayed_work(&fsvq->dispatch_work, in virtio_fs_request_dispatch_work()
379 spin_unlock(&fsvq->lock); in virtio_fs_request_dispatch_work()
382 req->out.h.error = ret; in virtio_fs_request_dispatch_work()
383 spin_lock(&fsvq->lock); in virtio_fs_request_dispatch_work()
385 spin_unlock(&fsvq->lock); in virtio_fs_request_dispatch_work()
386 pr_err("virtio-fs: virtio_fs_enqueue_req() failed %d\n", in virtio_fs_request_dispatch_work()
405 struct virtio_fs_forget_req *req = &forget->req; in send_forget_request()
407 spin_lock(&fsvq->lock); in send_forget_request()
408 if (!fsvq->connected) { in send_forget_request()
416 vq = fsvq->vq; in send_forget_request()
417 dev_dbg(&vq->vdev->dev, "%s\n", __func__); in send_forget_request()
421 if (ret == -ENOMEM || ret == -ENOSPC) { in send_forget_request()
422 pr_debug("virtio-fs: Could not queue FORGET: err=%d. Will try later\n", in send_forget_request()
424 list_add_tail(&forget->list, &fsvq->queued_reqs); in send_forget_request()
425 schedule_delayed_work(&fsvq->dispatch_work, in send_forget_request()
432 pr_debug("virtio-fs: Could not queue FORGET: err=%d. Dropping it.\n", in send_forget_request()
444 spin_unlock(&fsvq->lock); in send_forget_request()
450 spin_unlock(&fsvq->lock); in send_forget_request()
459 pr_debug("virtio-fs: worker %s called.\n", __func__); in virtio_fs_hiprio_dispatch_work()
461 spin_lock(&fsvq->lock); in virtio_fs_hiprio_dispatch_work()
462 forget = list_first_entry_or_null(&fsvq->queued_reqs, in virtio_fs_hiprio_dispatch_work()
465 spin_unlock(&fsvq->lock); in virtio_fs_hiprio_dispatch_work()
469 list_del(&forget->list); in virtio_fs_hiprio_dispatch_work()
470 spin_unlock(&fsvq->lock); in virtio_fs_hiprio_dispatch_work()
476 /* Allocate and copy args into req->argbuf */
479 struct fuse_args *args = req->args; in copy_args_to_argbuf()
486 num_in = args->in_numargs - args->in_pages; in copy_args_to_argbuf()
487 num_out = args->out_numargs - args->out_pages; in copy_args_to_argbuf()
488 len = fuse_len_args(num_in, (struct fuse_arg *) args->in_args) + in copy_args_to_argbuf()
489 fuse_len_args(num_out, args->out_args); in copy_args_to_argbuf()
491 req->argbuf = kmalloc(len, GFP_ATOMIC); in copy_args_to_argbuf()
492 if (!req->argbuf) in copy_args_to_argbuf()
493 return -ENOMEM; in copy_args_to_argbuf()
496 memcpy(req->argbuf + offset, in copy_args_to_argbuf()
497 args->in_args[i].value, in copy_args_to_argbuf()
498 args->in_args[i].size); in copy_args_to_argbuf()
499 offset += args->in_args[i].size; in copy_args_to_argbuf()
505 /* Copy args out of and free req->argbuf */
514 remaining = req->out.h.len - sizeof(req->out.h); in copy_args_from_argbuf()
515 num_in = args->in_numargs - args->in_pages; in copy_args_from_argbuf()
516 num_out = args->out_numargs - args->out_pages; in copy_args_from_argbuf()
517 offset = fuse_len_args(num_in, (struct fuse_arg *)args->in_args); in copy_args_from_argbuf()
520 unsigned int argsize = args->out_args[i].size; in copy_args_from_argbuf()
522 if (args->out_argvar && in copy_args_from_argbuf()
523 i == args->out_numargs - 1 && in copy_args_from_argbuf()
528 memcpy(args->out_args[i].value, req->argbuf + offset, argsize); in copy_args_from_argbuf()
531 if (i != args->out_numargs - 1) in copy_args_from_argbuf()
532 remaining -= argsize; in copy_args_from_argbuf()
535 /* Store the actual size of the variable-length arg */ in copy_args_from_argbuf()
536 if (args->out_argvar) in copy_args_from_argbuf()
537 args->out_args[args->out_numargs - 1].size = remaining; in copy_args_from_argbuf()
539 kfree(req->argbuf); in copy_args_from_argbuf()
540 req->argbuf = NULL; in copy_args_from_argbuf()
547 struct fuse_pqueue *fpq = &fsvq->fud->pq; in virtio_fs_request_complete()
557 args = req->args; in virtio_fs_request_complete()
560 if (args->out_pages && args->page_zeroing) { in virtio_fs_request_complete()
561 len = args->out_args[args->out_numargs - 1].size; in virtio_fs_request_complete()
563 for (i = 0; i < ap->num_pages; i++) { in virtio_fs_request_complete()
564 thislen = ap->descs[i].length; in virtio_fs_request_complete()
566 WARN_ON(ap->descs[i].offset); in virtio_fs_request_complete()
567 page = ap->pages[i]; in virtio_fs_request_complete()
571 len -= thislen; in virtio_fs_request_complete()
576 spin_lock(&fpq->lock); in virtio_fs_request_complete()
577 clear_bit(FR_SENT, &req->flags); in virtio_fs_request_complete()
578 spin_unlock(&fpq->lock); in virtio_fs_request_complete()
581 spin_lock(&fsvq->lock); in virtio_fs_request_complete()
583 spin_unlock(&fsvq->lock); in virtio_fs_request_complete()
591 virtio_fs_request_complete(w->req, w->fsvq); in virtio_fs_complete_req_work()
599 struct fuse_pqueue *fpq = &fsvq->fud->pq; in virtio_fs_requests_done_work()
600 struct virtqueue *vq = fsvq->vq; in virtio_fs_requests_done_work()
607 spin_lock(&fsvq->lock); in virtio_fs_requests_done_work()
612 spin_lock(&fpq->lock); in virtio_fs_requests_done_work()
613 list_move_tail(&req->list, &reqs); in virtio_fs_requests_done_work()
614 spin_unlock(&fpq->lock); in virtio_fs_requests_done_work()
617 spin_unlock(&fsvq->lock); in virtio_fs_requests_done_work()
621 list_del_init(&req->list); in virtio_fs_requests_done_work()
624 if (req->args->may_block) { in virtio_fs_requests_done_work()
628 INIT_WORK(&w->done_work, virtio_fs_complete_req_work); in virtio_fs_requests_done_work()
629 w->fsvq = fsvq; in virtio_fs_requests_done_work()
630 w->req = req; in virtio_fs_requests_done_work()
631 schedule_work(&w->done_work); in virtio_fs_requests_done_work()
643 dev_dbg(&vq->vdev->dev, "%s %s\n", __func__, fsvq->name); in virtio_fs_vq_done()
645 schedule_work(&fsvq->done_work); in virtio_fs_vq_done()
651 strncpy(fsvq->name, name, VQ_NAME_LEN); in virtio_fs_init_vq()
652 spin_lock_init(&fsvq->lock); in virtio_fs_init_vq()
653 INIT_LIST_HEAD(&fsvq->queued_reqs); in virtio_fs_init_vq()
654 INIT_LIST_HEAD(&fsvq->end_reqs); in virtio_fs_init_vq()
655 init_completion(&fsvq->in_flight_zero); in virtio_fs_init_vq()
658 INIT_WORK(&fsvq->done_work, virtio_fs_requests_done_work); in virtio_fs_init_vq()
659 INIT_DELAYED_WORK(&fsvq->dispatch_work, in virtio_fs_init_vq()
662 INIT_WORK(&fsvq->done_work, virtio_fs_hiprio_done_work); in virtio_fs_init_vq()
663 INIT_DELAYED_WORK(&fsvq->dispatch_work, in virtio_fs_init_vq()
679 &fs->num_request_queues); in virtio_fs_setup_vqs()
680 if (fs->num_request_queues == 0) in virtio_fs_setup_vqs()
681 return -EINVAL; in virtio_fs_setup_vqs()
683 fs->nvqs = VQ_REQUEST + fs->num_request_queues; in virtio_fs_setup_vqs()
684 fs->vqs = kcalloc(fs->nvqs, sizeof(fs->vqs[VQ_HIPRIO]), GFP_KERNEL); in virtio_fs_setup_vqs()
685 if (!fs->vqs) in virtio_fs_setup_vqs()
686 return -ENOMEM; in virtio_fs_setup_vqs()
688 vqs = kmalloc_array(fs->nvqs, sizeof(vqs[VQ_HIPRIO]), GFP_KERNEL); in virtio_fs_setup_vqs()
689 callbacks = kmalloc_array(fs->nvqs, sizeof(callbacks[VQ_HIPRIO]), in virtio_fs_setup_vqs()
691 names = kmalloc_array(fs->nvqs, sizeof(names[VQ_HIPRIO]), GFP_KERNEL); in virtio_fs_setup_vqs()
693 ret = -ENOMEM; in virtio_fs_setup_vqs()
699 virtio_fs_init_vq(&fs->vqs[VQ_HIPRIO], "hiprio", VQ_HIPRIO); in virtio_fs_setup_vqs()
700 names[VQ_HIPRIO] = fs->vqs[VQ_HIPRIO].name; in virtio_fs_setup_vqs()
703 for (i = VQ_REQUEST; i < fs->nvqs; i++) { in virtio_fs_setup_vqs()
706 snprintf(vq_name, VQ_NAME_LEN, "requests.%u", i - VQ_REQUEST); in virtio_fs_setup_vqs()
707 virtio_fs_init_vq(&fs->vqs[i], vq_name, VQ_REQUEST); in virtio_fs_setup_vqs()
709 names[i] = fs->vqs[i].name; in virtio_fs_setup_vqs()
712 ret = virtio_find_vqs(vdev, fs->nvqs, vqs, callbacks, names, NULL); in virtio_fs_setup_vqs()
716 for (i = 0; i < fs->nvqs; i++) in virtio_fs_setup_vqs()
717 fs->vqs[i].vq = vqs[i]; in virtio_fs_setup_vqs()
725 kfree(fs->vqs); in virtio_fs_setup_vqs()
733 vdev->config->del_vqs(vdev); in virtio_fs_cleanup_vqs()
745 size_t max_nr_pages = fs->window_len/PAGE_SIZE - pgoff; in virtio_fs_direct_access()
748 *kaddr = fs->window_kaddr + offset; in virtio_fs_direct_access()
750 *pfn = phys_to_pfn_t(fs->window_phys_addr + offset, in virtio_fs_direct_access()
811 dev_notice(&vdev->dev, "%s: No cache capability\n", __func__); in virtio_fs_setup_dax()
815 if (!devm_request_mem_region(&vdev->dev, cache_reg.addr, cache_reg.len, in virtio_fs_setup_dax()
816 dev_name(&vdev->dev))) { in virtio_fs_setup_dax()
817 dev_warn(&vdev->dev, "could not reserve region addr=0x%llx len=0x%llx\n", in virtio_fs_setup_dax()
819 return -EBUSY; in virtio_fs_setup_dax()
822 dev_notice(&vdev->dev, "Cache len: 0x%llx @ 0x%llx\n", cache_reg.len, in virtio_fs_setup_dax()
825 pgmap = devm_kzalloc(&vdev->dev, sizeof(*pgmap), GFP_KERNEL); in virtio_fs_setup_dax()
827 return -ENOMEM; in virtio_fs_setup_dax()
829 pgmap->type = MEMORY_DEVICE_FS_DAX; in virtio_fs_setup_dax()
831 /* Ideally we would directly use the PCI BAR resource but in virtio_fs_setup_dax()
836 pgmap->range = (struct range) { in virtio_fs_setup_dax()
838 .end = (phys_addr_t) cache_reg.addr + cache_reg.len - 1, in virtio_fs_setup_dax()
840 pgmap->nr_range = 1; in virtio_fs_setup_dax()
842 fs->window_kaddr = devm_memremap_pages(&vdev->dev, pgmap); in virtio_fs_setup_dax()
843 if (IS_ERR(fs->window_kaddr)) in virtio_fs_setup_dax()
844 return PTR_ERR(fs->window_kaddr); in virtio_fs_setup_dax()
846 fs->window_phys_addr = (phys_addr_t) cache_reg.addr; in virtio_fs_setup_dax()
847 fs->window_len = (phys_addr_t) cache_reg.len; in virtio_fs_setup_dax()
849 dev_dbg(&vdev->dev, "%s: window kaddr 0x%px phys_addr 0x%llx len 0x%llx\n", in virtio_fs_setup_dax()
850 __func__, fs->window_kaddr, cache_reg.addr, cache_reg.len); in virtio_fs_setup_dax()
852 fs->dax_dev = alloc_dax(fs, NULL, &virtio_fs_dax_ops, 0); in virtio_fs_setup_dax()
853 if (IS_ERR(fs->dax_dev)) in virtio_fs_setup_dax()
854 return PTR_ERR(fs->dax_dev); in virtio_fs_setup_dax()
856 return devm_add_action_or_reset(&vdev->dev, virtio_fs_cleanup_dax, in virtio_fs_setup_dax()
857 fs->dax_dev); in virtio_fs_setup_dax()
867 return -ENOMEM; in virtio_fs_probe()
868 kref_init(&fs->refcount); in virtio_fs_probe()
869 vdev->priv = fs; in virtio_fs_probe()
897 vdev->config->reset(vdev); in virtio_fs_probe()
901 vdev->priv = NULL; in virtio_fs_probe()
911 for (i = 0; i < fs->nvqs; i++) { in virtio_fs_stop_all_queues()
912 fsvq = &fs->vqs[i]; in virtio_fs_stop_all_queues()
913 spin_lock(&fsvq->lock); in virtio_fs_stop_all_queues()
914 fsvq->connected = false; in virtio_fs_stop_all_queues()
915 spin_unlock(&fsvq->lock); in virtio_fs_stop_all_queues()
921 struct virtio_fs *fs = vdev->priv; in virtio_fs_remove()
925 list_del_init(&fs->list); in virtio_fs_remove()
928 vdev->config->reset(vdev); in virtio_fs_remove()
931 vdev->priv = NULL; in virtio_fs_remove()
941 pr_warn("virtio-fs: suspend/resume not yet supported\n"); in virtio_fs_freeze()
942 return -EOPNOTSUPP; in virtio_fs_freeze()
974 __releases(fiq->lock) in virtio_fs_wake_forget_and_unlock()
986 fs = fiq->priv; in virtio_fs_wake_forget_and_unlock()
987 fsvq = &fs->vqs[VQ_HIPRIO]; in virtio_fs_wake_forget_and_unlock()
988 spin_unlock(&fiq->lock); in virtio_fs_wake_forget_and_unlock()
992 req = &forget->req; in virtio_fs_wake_forget_and_unlock()
994 req->ih = (struct fuse_in_header){ in virtio_fs_wake_forget_and_unlock()
996 .nodeid = link->forget_one.nodeid, in virtio_fs_wake_forget_and_unlock()
1000 req->arg = (struct fuse_forget_in){ in virtio_fs_wake_forget_and_unlock()
1001 .nlookup = link->forget_one.nlookup, in virtio_fs_wake_forget_and_unlock()
1009 __releases(fiq->lock) in virtio_fs_wake_interrupt_and_unlock()
1018 spin_unlock(&fiq->lock); in virtio_fs_wake_interrupt_and_unlock()
1021 /* Count number of scatter-gather elements required */
1031 total_len -= this_len; in sg_count_fuse_pages()
1037 /* Return the number of scatter-gather list elements required */
1040 struct fuse_args *args = req->args; in sg_count_fuse_req()
1044 if (args->in_numargs - args->in_pages) in sg_count_fuse_req()
1047 if (args->in_pages) { in sg_count_fuse_req()
1048 size = args->in_args[args->in_numargs - 1].size; in sg_count_fuse_req()
1049 total_sgs += sg_count_fuse_pages(ap->descs, ap->num_pages, in sg_count_fuse_req()
1053 if (!test_bit(FR_ISREPLY, &req->flags)) in sg_count_fuse_req()
1058 if (args->out_numargs - args->out_pages) in sg_count_fuse_req()
1061 if (args->out_pages) { in sg_count_fuse_req()
1062 size = args->out_args[args->out_numargs - 1].size; in sg_count_fuse_req()
1063 total_sgs += sg_count_fuse_pages(ap->descs, ap->num_pages, in sg_count_fuse_req()
1070 /* Add pages to scatter-gather list and return number of elements used */
1084 total_len -= this_len; in sg_init_fuse_pages()
1090 /* Add args to scatter-gather list and return number of elements used */
1099 struct fuse_args_pages *ap = container_of(req->args, typeof(*ap), args); in sg_init_fuse_args()
1103 len = fuse_len_args(numargs - argpages, args); in sg_init_fuse_args()
1109 ap->pages, ap->descs, in sg_init_fuse_args()
1110 ap->num_pages, in sg_init_fuse_args()
1111 args[numargs - 1].size); in sg_init_fuse_args()
1129 struct fuse_args *args = req->args; in virtio_fs_enqueue_req()
1145 ret = -ENOMEM; in virtio_fs_enqueue_req()
1156 sg_init_one(&sg[out_sgs++], &req->in.h, sizeof(req->in.h)); in virtio_fs_enqueue_req()
1158 (struct fuse_arg *)args->in_args, in virtio_fs_enqueue_req()
1159 args->in_numargs, args->in_pages, in virtio_fs_enqueue_req()
1160 req->argbuf, &argbuf_used); in virtio_fs_enqueue_req()
1163 if (test_bit(FR_ISREPLY, &req->flags)) { in virtio_fs_enqueue_req()
1165 &req->out.h, sizeof(req->out.h)); in virtio_fs_enqueue_req()
1167 args->out_args, args->out_numargs, in virtio_fs_enqueue_req()
1168 args->out_pages, in virtio_fs_enqueue_req()
1169 req->argbuf + argbuf_used, NULL); in virtio_fs_enqueue_req()
1177 spin_lock(&fsvq->lock); in virtio_fs_enqueue_req()
1179 if (!fsvq->connected) { in virtio_fs_enqueue_req()
1180 spin_unlock(&fsvq->lock); in virtio_fs_enqueue_req()
1181 ret = -ENOTCONN; in virtio_fs_enqueue_req()
1185 vq = fsvq->vq; in virtio_fs_enqueue_req()
1188 spin_unlock(&fsvq->lock); in virtio_fs_enqueue_req()
1193 fpq = &fsvq->fud->pq; in virtio_fs_enqueue_req()
1194 spin_lock(&fpq->lock); in virtio_fs_enqueue_req()
1195 list_add_tail(&req->list, fpq->processing); in virtio_fs_enqueue_req()
1196 spin_unlock(&fpq->lock); in virtio_fs_enqueue_req()
1197 set_bit(FR_SENT, &req->flags); in virtio_fs_enqueue_req()
1205 spin_unlock(&fsvq->lock); in virtio_fs_enqueue_req()
1211 if (ret < 0 && req->argbuf) { in virtio_fs_enqueue_req()
1212 kfree(req->argbuf); in virtio_fs_enqueue_req()
1213 req->argbuf = NULL; in virtio_fs_enqueue_req()
1224 __releases(fiq->lock) in virtio_fs_wake_pending_and_unlock()
1232 WARN_ON(list_empty(&fiq->pending)); in virtio_fs_wake_pending_and_unlock()
1233 req = list_last_entry(&fiq->pending, struct fuse_req, list); in virtio_fs_wake_pending_and_unlock()
1234 clear_bit(FR_PENDING, &req->flags); in virtio_fs_wake_pending_and_unlock()
1235 list_del_init(&req->list); in virtio_fs_wake_pending_and_unlock()
1236 WARN_ON(!list_empty(&fiq->pending)); in virtio_fs_wake_pending_and_unlock()
1237 spin_unlock(&fiq->lock); in virtio_fs_wake_pending_and_unlock()
1239 fs = fiq->priv; in virtio_fs_wake_pending_and_unlock()
1242 __func__, req->in.h.opcode, req->in.h.unique, in virtio_fs_wake_pending_and_unlock()
1243 req->in.h.nodeid, req->in.h.len, in virtio_fs_wake_pending_and_unlock()
1244 fuse_len_args(req->args->out_numargs, req->args->out_args)); in virtio_fs_wake_pending_and_unlock()
1246 fsvq = &fs->vqs[queue_id]; in virtio_fs_wake_pending_and_unlock()
1249 if (ret == -ENOMEM || ret == -ENOSPC) { in virtio_fs_wake_pending_and_unlock()
1252 * context as we might be holding fc->bg_lock. in virtio_fs_wake_pending_and_unlock()
1254 spin_lock(&fsvq->lock); in virtio_fs_wake_pending_and_unlock()
1255 list_add_tail(&req->list, &fsvq->queued_reqs); in virtio_fs_wake_pending_and_unlock()
1257 schedule_delayed_work(&fsvq->dispatch_work, in virtio_fs_wake_pending_and_unlock()
1259 spin_unlock(&fsvq->lock); in virtio_fs_wake_pending_and_unlock()
1262 req->out.h.error = ret; in virtio_fs_wake_pending_and_unlock()
1263 pr_err("virtio-fs: virtio_fs_enqueue_req() failed %d\n", ret); in virtio_fs_wake_pending_and_unlock()
1266 spin_lock(&fsvq->lock); in virtio_fs_wake_pending_and_unlock()
1267 list_add_tail(&req->list, &fsvq->end_reqs); in virtio_fs_wake_pending_and_unlock()
1268 schedule_delayed_work(&fsvq->dispatch_work, 0); in virtio_fs_wake_pending_and_unlock()
1269 spin_unlock(&fsvq->lock); in virtio_fs_wake_pending_and_unlock()
1283 ctx->rootmode = S_IFDIR; in virtio_fs_ctx_set_defaults()
1284 ctx->default_permissions = 1; in virtio_fs_ctx_set_defaults()
1285 ctx->allow_other = 1; in virtio_fs_ctx_set_defaults()
1286 ctx->max_read = UINT_MAX; in virtio_fs_ctx_set_defaults()
1287 ctx->blksize = 512; in virtio_fs_ctx_set_defaults()
1288 ctx->destroy = true; in virtio_fs_ctx_set_defaults()
1289 ctx->no_control = true; in virtio_fs_ctx_set_defaults()
1290 ctx->no_force_umount = true; in virtio_fs_ctx_set_defaults()
1296 struct fuse_conn *fc = fm->fc; in virtio_fs_fill_super()
1297 struct virtio_fs *fs = fc->iq.priv; in virtio_fs_fill_super()
1298 struct fuse_fs_context *ctx = fsc->fs_private; in virtio_fs_fill_super()
1306 * Though we are holding a reference to it, drive ->remove might in virtio_fs_fill_super()
1309 err = -EINVAL; in virtio_fs_fill_super()
1310 if (list_empty(&fs->list)) { in virtio_fs_fill_super()
1311 pr_info("virtio-fs: tag <%s> not found\n", fs->tag); in virtio_fs_fill_super()
1315 err = -ENOMEM; in virtio_fs_fill_super()
1317 for (i = 0; i < fs->nvqs; i++) { in virtio_fs_fill_super()
1318 struct virtio_fs_vq *fsvq = &fs->vqs[i]; in virtio_fs_fill_super()
1320 fsvq->fud = fuse_dev_alloc(); in virtio_fs_fill_super()
1321 if (!fsvq->fud) in virtio_fs_fill_super()
1326 ctx->fudptr = NULL; in virtio_fs_fill_super()
1327 if (ctx->dax) in virtio_fs_fill_super()
1328 ctx->dax_dev = fs->dax_dev; in virtio_fs_fill_super()
1333 for (i = 0; i < fs->nvqs; i++) { in virtio_fs_fill_super()
1334 struct virtio_fs_vq *fsvq = &fs->vqs[i]; in virtio_fs_fill_super()
1336 fuse_dev_install(fsvq->fud, fc); in virtio_fs_fill_super()
1354 struct fuse_conn *fc = fm->fc; in virtio_fs_conn_destroy()
1355 struct virtio_fs *vfs = fc->iq.priv; in virtio_fs_conn_destroy()
1356 struct virtio_fs_vq *fsvq = &vfs->vqs[VQ_HIPRIO]; in virtio_fs_conn_destroy()
1365 spin_lock(&fsvq->lock); in virtio_fs_conn_destroy()
1366 fsvq->connected = false; in virtio_fs_conn_destroy()
1367 spin_unlock(&fsvq->lock); in virtio_fs_conn_destroy()
1399 struct fuse_mount *fsc_fm = fsc->s_fs_info; in virtio_fs_test_super()
1402 return fsc_fm->fc->iq.priv == sb_fm->fc->iq.priv; in virtio_fs_test_super()
1410 err = get_anon_bdev(&sb->s_dev); in virtio_fs_set_super()
1412 fuse_mount_get(fsc->s_fs_info); in virtio_fs_set_super()
1426 * in fc->iq->priv. Once fuse_conn is going away, it calls ->put() in virtio_fs_get_tree()
1429 fs = virtio_fs_find_instance(fsc->source); in virtio_fs_get_tree()
1431 pr_info("virtio-fs: tag <%s> not found\n", fsc->source); in virtio_fs_get_tree()
1432 return -EINVAL; in virtio_fs_get_tree()
1440 return -ENOMEM; in virtio_fs_get_tree()
1449 return -ENOMEM; in virtio_fs_get_tree()
1454 fc->release = fuse_free_conn; in virtio_fs_get_tree()
1455 fc->delete_stale = true; in virtio_fs_get_tree()
1456 fc->auto_submounts = true; in virtio_fs_get_tree()
1458 fsc->s_fs_info = fm; in virtio_fs_get_tree()
1464 if (!sb->s_root) { in virtio_fs_get_tree()
1471 sb->s_flags |= SB_ACTIVE; in virtio_fs_get_tree()
1474 WARN_ON(fsc->root); in virtio_fs_get_tree()
1475 fsc->root = dget(sb->s_root); in virtio_fs_get_tree()
1491 return -ENOMEM; in virtio_fs_init_fs_context()
1492 fsc->fs_private = ctx; in virtio_fs_init_fs_context()
1493 fsc->ops = &virtio_fs_context_ops; in virtio_fs_init_fs_context()
1530 MODULE_DESCRIPTION("Virtio Filesystem");
1533 MODULE_DEVICE_TABLE(virtio, id_table);