Christoph Hellwig | 5c83746 | 2014-09-10 17:37:27 -0700 | [diff] [blame] | 1 | /* |
Christoph Hellwig | d9186c0 | 2016-03-04 20:46:15 +0100 | [diff] [blame] | 2 | * Copyright (c) 2014-2016 Christoph Hellwig. |
Christoph Hellwig | 5c83746 | 2014-09-10 17:37:27 -0700 | [diff] [blame] | 3 | */ |
| 4 | #include <linux/sunrpc/svc.h> |
| 5 | #include <linux/blkdev.h> |
| 6 | #include <linux/nfs4.h> |
| 7 | #include <linux/nfs_fs.h> |
| 8 | #include <linux/nfs_xdr.h> |
Christoph Hellwig | d9186c0 | 2016-03-04 20:46:15 +0100 | [diff] [blame] | 9 | #include <linux/pr.h> |
Christoph Hellwig | 5c83746 | 2014-09-10 17:37:27 -0700 | [diff] [blame] | 10 | |
| 11 | #include "blocklayout.h" |
| 12 | |
| 13 | #define NFSDBG_FACILITY NFSDBG_PNFS_LD |
| 14 | |
| 15 | static void |
| 16 | bl_free_device(struct pnfs_block_dev *dev) |
| 17 | { |
| 18 | if (dev->nr_children) { |
| 19 | int i; |
| 20 | |
| 21 | for (i = 0; i < dev->nr_children; i++) |
| 22 | bl_free_device(&dev->children[i]); |
| 23 | kfree(dev->children); |
| 24 | } else { |
Christoph Hellwig | d9186c0 | 2016-03-04 20:46:15 +0100 | [diff] [blame] | 25 | if (dev->pr_registered) { |
| 26 | const struct pr_ops *ops = |
| 27 | dev->bdev->bd_disk->fops->pr_ops; |
| 28 | int error; |
| 29 | |
| 30 | error = ops->pr_register(dev->bdev, dev->pr_key, 0, |
| 31 | false); |
| 32 | if (error) |
| 33 | pr_err("failed to unregister PR key.\n"); |
| 34 | } |
| 35 | |
Christoph Hellwig | 5c83746 | 2014-09-10 17:37:27 -0700 | [diff] [blame] | 36 | if (dev->bdev) |
Christoph Hellwig | 513d6d7 | 2015-08-17 18:41:00 +0200 | [diff] [blame] | 37 | blkdev_put(dev->bdev, FMODE_READ | FMODE_WRITE); |
Christoph Hellwig | 5c83746 | 2014-09-10 17:37:27 -0700 | [diff] [blame] | 38 | } |
| 39 | } |
| 40 | |
| 41 | void |
| 42 | bl_free_deviceid_node(struct nfs4_deviceid_node *d) |
| 43 | { |
| 44 | struct pnfs_block_dev *dev = |
| 45 | container_of(d, struct pnfs_block_dev, node); |
| 46 | |
| 47 | bl_free_device(dev); |
Trond Myklebust | 84a80f6 | 2015-03-09 15:23:35 -0400 | [diff] [blame] | 48 | kfree_rcu(dev, node.rcu); |
Christoph Hellwig | 5c83746 | 2014-09-10 17:37:27 -0700 | [diff] [blame] | 49 | } |
| 50 | |
| 51 | static int |
| 52 | nfs4_block_decode_volume(struct xdr_stream *xdr, struct pnfs_block_volume *b) |
| 53 | { |
| 54 | __be32 *p; |
| 55 | int i; |
| 56 | |
| 57 | p = xdr_inline_decode(xdr, 4); |
| 58 | if (!p) |
| 59 | return -EIO; |
| 60 | b->type = be32_to_cpup(p++); |
| 61 | |
| 62 | switch (b->type) { |
| 63 | case PNFS_BLOCK_VOLUME_SIMPLE: |
| 64 | p = xdr_inline_decode(xdr, 4); |
| 65 | if (!p) |
| 66 | return -EIO; |
| 67 | b->simple.nr_sigs = be32_to_cpup(p++); |
| 68 | if (!b->simple.nr_sigs) { |
| 69 | dprintk("no signature\n"); |
| 70 | return -EIO; |
| 71 | } |
| 72 | |
| 73 | b->simple.len = 4 + 4; |
| 74 | for (i = 0; i < b->simple.nr_sigs; i++) { |
| 75 | p = xdr_inline_decode(xdr, 8 + 4); |
| 76 | if (!p) |
| 77 | return -EIO; |
| 78 | p = xdr_decode_hyper(p, &b->simple.sigs[i].offset); |
| 79 | b->simple.sigs[i].sig_len = be32_to_cpup(p++); |
Christoph Hellwig | 2bd3c63 | 2015-08-17 18:40:59 +0200 | [diff] [blame] | 80 | if (b->simple.sigs[i].sig_len > PNFS_BLOCK_UUID_LEN) { |
| 81 | pr_info("signature too long: %d\n", |
| 82 | b->simple.sigs[i].sig_len); |
| 83 | return -EIO; |
| 84 | } |
Christoph Hellwig | 5c83746 | 2014-09-10 17:37:27 -0700 | [diff] [blame] | 85 | |
| 86 | p = xdr_inline_decode(xdr, b->simple.sigs[i].sig_len); |
| 87 | if (!p) |
| 88 | return -EIO; |
| 89 | memcpy(&b->simple.sigs[i].sig, p, |
| 90 | b->simple.sigs[i].sig_len); |
| 91 | |
| 92 | b->simple.len += 8 + 4 + b->simple.sigs[i].sig_len; |
| 93 | } |
| 94 | break; |
| 95 | case PNFS_BLOCK_VOLUME_SLICE: |
| 96 | p = xdr_inline_decode(xdr, 8 + 8 + 4); |
| 97 | if (!p) |
| 98 | return -EIO; |
| 99 | p = xdr_decode_hyper(p, &b->slice.start); |
| 100 | p = xdr_decode_hyper(p, &b->slice.len); |
| 101 | b->slice.volume = be32_to_cpup(p++); |
| 102 | break; |
| 103 | case PNFS_BLOCK_VOLUME_CONCAT: |
| 104 | p = xdr_inline_decode(xdr, 4); |
| 105 | if (!p) |
| 106 | return -EIO; |
| 107 | b->concat.volumes_count = be32_to_cpup(p++); |
| 108 | |
| 109 | p = xdr_inline_decode(xdr, b->concat.volumes_count * 4); |
| 110 | if (!p) |
| 111 | return -EIO; |
| 112 | for (i = 0; i < b->concat.volumes_count; i++) |
| 113 | b->concat.volumes[i] = be32_to_cpup(p++); |
| 114 | break; |
| 115 | case PNFS_BLOCK_VOLUME_STRIPE: |
| 116 | p = xdr_inline_decode(xdr, 8 + 4); |
| 117 | if (!p) |
| 118 | return -EIO; |
| 119 | p = xdr_decode_hyper(p, &b->stripe.chunk_size); |
| 120 | b->stripe.volumes_count = be32_to_cpup(p++); |
| 121 | |
| 122 | p = xdr_inline_decode(xdr, b->stripe.volumes_count * 4); |
| 123 | if (!p) |
| 124 | return -EIO; |
| 125 | for (i = 0; i < b->stripe.volumes_count; i++) |
| 126 | b->stripe.volumes[i] = be32_to_cpup(p++); |
| 127 | break; |
Christoph Hellwig | d9186c0 | 2016-03-04 20:46:15 +0100 | [diff] [blame] | 128 | case PNFS_BLOCK_VOLUME_SCSI: |
| 129 | p = xdr_inline_decode(xdr, 4 + 4 + 4); |
| 130 | if (!p) |
| 131 | return -EIO; |
| 132 | b->scsi.code_set = be32_to_cpup(p++); |
| 133 | b->scsi.designator_type = be32_to_cpup(p++); |
| 134 | b->scsi.designator_len = be32_to_cpup(p++); |
| 135 | p = xdr_inline_decode(xdr, b->scsi.designator_len); |
| 136 | if (!p) |
| 137 | return -EIO; |
| 138 | if (b->scsi.designator_len > 256) |
| 139 | return -EIO; |
| 140 | memcpy(&b->scsi.designator, p, b->scsi.designator_len); |
| 141 | p = xdr_inline_decode(xdr, 8); |
| 142 | if (!p) |
| 143 | return -EIO; |
| 144 | p = xdr_decode_hyper(p, &b->scsi.pr_key); |
| 145 | break; |
Christoph Hellwig | 5c83746 | 2014-09-10 17:37:27 -0700 | [diff] [blame] | 146 | default: |
| 147 | dprintk("unknown volume type!\n"); |
| 148 | return -EIO; |
| 149 | } |
| 150 | |
| 151 | return 0; |
| 152 | } |
| 153 | |
| 154 | static bool bl_map_simple(struct pnfs_block_dev *dev, u64 offset, |
| 155 | struct pnfs_block_dev_map *map) |
| 156 | { |
| 157 | map->start = dev->start; |
| 158 | map->len = dev->len; |
| 159 | map->disk_offset = dev->disk_offset; |
| 160 | map->bdev = dev->bdev; |
| 161 | return true; |
| 162 | } |
| 163 | |
| 164 | static bool bl_map_concat(struct pnfs_block_dev *dev, u64 offset, |
| 165 | struct pnfs_block_dev_map *map) |
| 166 | { |
| 167 | int i; |
| 168 | |
| 169 | for (i = 0; i < dev->nr_children; i++) { |
| 170 | struct pnfs_block_dev *child = &dev->children[i]; |
| 171 | |
| 172 | if (child->start > offset || |
| 173 | child->start + child->len <= offset) |
| 174 | continue; |
| 175 | |
| 176 | child->map(child, offset - child->start, map); |
| 177 | return true; |
| 178 | } |
| 179 | |
| 180 | dprintk("%s: ran off loop!\n", __func__); |
| 181 | return false; |
| 182 | } |
| 183 | |
| 184 | static bool bl_map_stripe(struct pnfs_block_dev *dev, u64 offset, |
| 185 | struct pnfs_block_dev_map *map) |
| 186 | { |
| 187 | struct pnfs_block_dev *child; |
Trond Myklebust | 5466112f | 2014-09-18 17:03:46 -0400 | [diff] [blame] | 188 | u64 chunk; |
| 189 | u32 chunk_idx; |
Christoph Hellwig | 5c83746 | 2014-09-10 17:37:27 -0700 | [diff] [blame] | 190 | u64 disk_offset; |
| 191 | |
Trond Myklebust | 5466112f | 2014-09-18 17:03:46 -0400 | [diff] [blame] | 192 | chunk = div_u64(offset, dev->chunk_size); |
| 193 | div_u64_rem(chunk, dev->nr_children, &chunk_idx); |
| 194 | |
Christoph Hellwig | 5c83746 | 2014-09-10 17:37:27 -0700 | [diff] [blame] | 195 | if (chunk_idx > dev->nr_children) { |
| 196 | dprintk("%s: invalid chunk idx %d (%lld/%lld)\n", |
| 197 | __func__, chunk_idx, offset, dev->chunk_size); |
| 198 | /* error, should not happen */ |
| 199 | return false; |
| 200 | } |
| 201 | |
| 202 | /* truncate offset to the beginning of the stripe */ |
| 203 | offset = chunk * dev->chunk_size; |
| 204 | |
| 205 | /* disk offset of the stripe */ |
Trond Myklebust | 5466112f | 2014-09-18 17:03:46 -0400 | [diff] [blame] | 206 | disk_offset = div_u64(offset, dev->nr_children); |
Christoph Hellwig | 5c83746 | 2014-09-10 17:37:27 -0700 | [diff] [blame] | 207 | |
| 208 | child = &dev->children[chunk_idx]; |
| 209 | child->map(child, disk_offset, map); |
| 210 | |
| 211 | map->start += offset; |
| 212 | map->disk_offset += disk_offset; |
| 213 | map->len = dev->chunk_size; |
| 214 | return true; |
| 215 | } |
| 216 | |
| 217 | static int |
| 218 | bl_parse_deviceid(struct nfs_server *server, struct pnfs_block_dev *d, |
| 219 | struct pnfs_block_volume *volumes, int idx, gfp_t gfp_mask); |
| 220 | |
| 221 | |
| 222 | static int |
| 223 | bl_parse_simple(struct nfs_server *server, struct pnfs_block_dev *d, |
| 224 | struct pnfs_block_volume *volumes, int idx, gfp_t gfp_mask) |
| 225 | { |
| 226 | struct pnfs_block_volume *v = &volumes[idx]; |
| 227 | dev_t dev; |
| 228 | |
| 229 | dev = bl_resolve_deviceid(server, v, gfp_mask); |
| 230 | if (!dev) |
| 231 | return -EIO; |
| 232 | |
Christoph Hellwig | 513d6d7 | 2015-08-17 18:41:00 +0200 | [diff] [blame] | 233 | d->bdev = blkdev_get_by_dev(dev, FMODE_READ | FMODE_WRITE, NULL); |
Christoph Hellwig | 5c83746 | 2014-09-10 17:37:27 -0700 | [diff] [blame] | 234 | if (IS_ERR(d->bdev)) { |
| 235 | printk(KERN_WARNING "pNFS: failed to open device %d:%d (%ld)\n", |
| 236 | MAJOR(dev), MINOR(dev), PTR_ERR(d->bdev)); |
| 237 | return PTR_ERR(d->bdev); |
| 238 | } |
| 239 | |
| 240 | |
| 241 | d->len = i_size_read(d->bdev->bd_inode); |
| 242 | d->map = bl_map_simple; |
| 243 | |
| 244 | printk(KERN_INFO "pNFS: using block device %s\n", |
| 245 | d->bdev->bd_disk->disk_name); |
| 246 | return 0; |
| 247 | } |
| 248 | |
Christoph Hellwig | d9186c0 | 2016-03-04 20:46:15 +0100 | [diff] [blame] | 249 | static bool |
| 250 | bl_validate_designator(struct pnfs_block_volume *v) |
| 251 | { |
| 252 | switch (v->scsi.designator_type) { |
| 253 | case PS_DESIGNATOR_EUI64: |
| 254 | if (v->scsi.code_set != PS_CODE_SET_BINARY) |
| 255 | return false; |
| 256 | |
| 257 | if (v->scsi.designator_len != 8 && |
| 258 | v->scsi.designator_len != 10 && |
| 259 | v->scsi.designator_len != 16) |
| 260 | return false; |
| 261 | |
| 262 | return true; |
| 263 | case PS_DESIGNATOR_NAA: |
| 264 | if (v->scsi.code_set != PS_CODE_SET_BINARY) |
| 265 | return false; |
| 266 | |
| 267 | if (v->scsi.designator_len != 8 && |
| 268 | v->scsi.designator_len != 16) |
| 269 | return false; |
| 270 | |
| 271 | return true; |
| 272 | case PS_DESIGNATOR_T10: |
| 273 | case PS_DESIGNATOR_NAME: |
| 274 | pr_err("pNFS: unsupported designator " |
| 275 | "(code set %d, type %d, len %d.\n", |
| 276 | v->scsi.code_set, |
| 277 | v->scsi.designator_type, |
| 278 | v->scsi.designator_len); |
| 279 | return false; |
| 280 | default: |
| 281 | pr_err("pNFS: invalid designator " |
| 282 | "(code set %d, type %d, len %d.\n", |
| 283 | v->scsi.code_set, |
| 284 | v->scsi.designator_type, |
| 285 | v->scsi.designator_len); |
| 286 | return false; |
| 287 | } |
| 288 | } |
| 289 | |
| 290 | static int |
| 291 | bl_parse_scsi(struct nfs_server *server, struct pnfs_block_dev *d, |
| 292 | struct pnfs_block_volume *volumes, int idx, gfp_t gfp_mask) |
| 293 | { |
| 294 | struct pnfs_block_volume *v = &volumes[idx]; |
| 295 | const struct pr_ops *ops; |
| 296 | const char *devname; |
| 297 | int error; |
| 298 | |
| 299 | if (!bl_validate_designator(v)) |
| 300 | return -EINVAL; |
| 301 | |
| 302 | switch (v->scsi.designator_len) { |
| 303 | case 8: |
| 304 | devname = kasprintf(GFP_KERNEL, "/dev/disk/by-id/wwn-0x%8phN", |
| 305 | v->scsi.designator); |
| 306 | break; |
| 307 | case 12: |
| 308 | devname = kasprintf(GFP_KERNEL, "/dev/disk/by-id/wwn-0x%12phN", |
| 309 | v->scsi.designator); |
| 310 | break; |
| 311 | case 16: |
| 312 | devname = kasprintf(GFP_KERNEL, "/dev/disk/by-id/wwn-0x%16phN", |
| 313 | v->scsi.designator); |
| 314 | break; |
| 315 | default: |
| 316 | return -EINVAL; |
| 317 | } |
| 318 | |
| 319 | d->bdev = blkdev_get_by_path(devname, FMODE_READ, NULL); |
| 320 | if (IS_ERR(d->bdev)) { |
| 321 | pr_warn("pNFS: failed to open device %s (%ld)\n", |
| 322 | devname, PTR_ERR(d->bdev)); |
| 323 | kfree(devname); |
| 324 | return PTR_ERR(d->bdev); |
| 325 | } |
| 326 | |
| 327 | kfree(devname); |
| 328 | |
| 329 | d->len = i_size_read(d->bdev->bd_inode); |
| 330 | d->map = bl_map_simple; |
| 331 | d->pr_key = v->scsi.pr_key; |
| 332 | |
| 333 | pr_info("pNFS: using block device %s (reservation key 0x%llx)\n", |
| 334 | d->bdev->bd_disk->disk_name, d->pr_key); |
| 335 | |
| 336 | ops = d->bdev->bd_disk->fops->pr_ops; |
| 337 | if (!ops) { |
| 338 | pr_err("pNFS: block device %s does not support reservations.", |
| 339 | d->bdev->bd_disk->disk_name); |
| 340 | error = -EINVAL; |
| 341 | goto out_blkdev_put; |
| 342 | } |
| 343 | |
| 344 | error = ops->pr_register(d->bdev, 0, d->pr_key, true); |
| 345 | if (error) { |
| 346 | pr_err("pNFS: failed to register key for block device %s.", |
| 347 | d->bdev->bd_disk->disk_name); |
| 348 | goto out_blkdev_put; |
| 349 | } |
| 350 | |
| 351 | d->pr_registered = true; |
| 352 | return 0; |
| 353 | |
| 354 | out_blkdev_put: |
| 355 | blkdev_put(d->bdev, FMODE_READ); |
| 356 | return error; |
| 357 | } |
| 358 | |
Christoph Hellwig | 5c83746 | 2014-09-10 17:37:27 -0700 | [diff] [blame] | 359 | static int |
| 360 | bl_parse_slice(struct nfs_server *server, struct pnfs_block_dev *d, |
| 361 | struct pnfs_block_volume *volumes, int idx, gfp_t gfp_mask) |
| 362 | { |
| 363 | struct pnfs_block_volume *v = &volumes[idx]; |
| 364 | int ret; |
| 365 | |
| 366 | ret = bl_parse_deviceid(server, d, volumes, v->slice.volume, gfp_mask); |
| 367 | if (ret) |
| 368 | return ret; |
| 369 | |
| 370 | d->disk_offset = v->slice.start; |
| 371 | d->len = v->slice.len; |
| 372 | return 0; |
| 373 | } |
| 374 | |
| 375 | static int |
| 376 | bl_parse_concat(struct nfs_server *server, struct pnfs_block_dev *d, |
| 377 | struct pnfs_block_volume *volumes, int idx, gfp_t gfp_mask) |
| 378 | { |
| 379 | struct pnfs_block_volume *v = &volumes[idx]; |
| 380 | u64 len = 0; |
| 381 | int ret, i; |
| 382 | |
| 383 | d->children = kcalloc(v->concat.volumes_count, |
| 384 | sizeof(struct pnfs_block_dev), GFP_KERNEL); |
| 385 | if (!d->children) |
| 386 | return -ENOMEM; |
| 387 | |
| 388 | for (i = 0; i < v->concat.volumes_count; i++) { |
| 389 | ret = bl_parse_deviceid(server, &d->children[i], |
| 390 | volumes, v->concat.volumes[i], gfp_mask); |
| 391 | if (ret) |
| 392 | return ret; |
| 393 | |
| 394 | d->nr_children++; |
| 395 | d->children[i].start += len; |
| 396 | len += d->children[i].len; |
| 397 | } |
| 398 | |
| 399 | d->len = len; |
| 400 | d->map = bl_map_concat; |
| 401 | return 0; |
| 402 | } |
| 403 | |
| 404 | static int |
| 405 | bl_parse_stripe(struct nfs_server *server, struct pnfs_block_dev *d, |
| 406 | struct pnfs_block_volume *volumes, int idx, gfp_t gfp_mask) |
| 407 | { |
| 408 | struct pnfs_block_volume *v = &volumes[idx]; |
| 409 | u64 len = 0; |
| 410 | int ret, i; |
| 411 | |
| 412 | d->children = kcalloc(v->stripe.volumes_count, |
| 413 | sizeof(struct pnfs_block_dev), GFP_KERNEL); |
| 414 | if (!d->children) |
| 415 | return -ENOMEM; |
| 416 | |
| 417 | for (i = 0; i < v->stripe.volumes_count; i++) { |
| 418 | ret = bl_parse_deviceid(server, &d->children[i], |
| 419 | volumes, v->stripe.volumes[i], gfp_mask); |
| 420 | if (ret) |
| 421 | return ret; |
| 422 | |
| 423 | d->nr_children++; |
| 424 | len += d->children[i].len; |
| 425 | } |
| 426 | |
| 427 | d->len = len; |
| 428 | d->chunk_size = v->stripe.chunk_size; |
| 429 | d->map = bl_map_stripe; |
| 430 | return 0; |
| 431 | } |
| 432 | |
| 433 | static int |
| 434 | bl_parse_deviceid(struct nfs_server *server, struct pnfs_block_dev *d, |
| 435 | struct pnfs_block_volume *volumes, int idx, gfp_t gfp_mask) |
| 436 | { |
| 437 | switch (volumes[idx].type) { |
| 438 | case PNFS_BLOCK_VOLUME_SIMPLE: |
| 439 | return bl_parse_simple(server, d, volumes, idx, gfp_mask); |
| 440 | case PNFS_BLOCK_VOLUME_SLICE: |
| 441 | return bl_parse_slice(server, d, volumes, idx, gfp_mask); |
| 442 | case PNFS_BLOCK_VOLUME_CONCAT: |
| 443 | return bl_parse_concat(server, d, volumes, idx, gfp_mask); |
| 444 | case PNFS_BLOCK_VOLUME_STRIPE: |
| 445 | return bl_parse_stripe(server, d, volumes, idx, gfp_mask); |
Christoph Hellwig | d9186c0 | 2016-03-04 20:46:15 +0100 | [diff] [blame] | 446 | case PNFS_BLOCK_VOLUME_SCSI: |
| 447 | return bl_parse_scsi(server, d, volumes, idx, gfp_mask); |
Christoph Hellwig | 5c83746 | 2014-09-10 17:37:27 -0700 | [diff] [blame] | 448 | default: |
| 449 | dprintk("unsupported volume type: %d\n", volumes[idx].type); |
| 450 | return -EIO; |
| 451 | } |
| 452 | } |
| 453 | |
| 454 | struct nfs4_deviceid_node * |
| 455 | bl_alloc_deviceid_node(struct nfs_server *server, struct pnfs_device *pdev, |
| 456 | gfp_t gfp_mask) |
| 457 | { |
| 458 | struct nfs4_deviceid_node *node = NULL; |
| 459 | struct pnfs_block_volume *volumes; |
| 460 | struct pnfs_block_dev *top; |
| 461 | struct xdr_stream xdr; |
| 462 | struct xdr_buf buf; |
| 463 | struct page *scratch; |
| 464 | int nr_volumes, ret, i; |
| 465 | __be32 *p; |
| 466 | |
| 467 | scratch = alloc_page(gfp_mask); |
| 468 | if (!scratch) |
| 469 | goto out; |
| 470 | |
| 471 | xdr_init_decode_pages(&xdr, &buf, pdev->pages, pdev->pglen); |
| 472 | xdr_set_scratch_buffer(&xdr, page_address(scratch), PAGE_SIZE); |
| 473 | |
| 474 | p = xdr_inline_decode(&xdr, sizeof(__be32)); |
| 475 | if (!p) |
| 476 | goto out_free_scratch; |
| 477 | nr_volumes = be32_to_cpup(p++); |
| 478 | |
| 479 | volumes = kcalloc(nr_volumes, sizeof(struct pnfs_block_volume), |
| 480 | gfp_mask); |
| 481 | if (!volumes) |
| 482 | goto out_free_scratch; |
| 483 | |
| 484 | for (i = 0; i < nr_volumes; i++) { |
| 485 | ret = nfs4_block_decode_volume(&xdr, &volumes[i]); |
| 486 | if (ret < 0) |
| 487 | goto out_free_volumes; |
| 488 | } |
| 489 | |
| 490 | top = kzalloc(sizeof(*top), gfp_mask); |
| 491 | if (!top) |
| 492 | goto out_free_volumes; |
| 493 | |
| 494 | ret = bl_parse_deviceid(server, top, volumes, nr_volumes - 1, gfp_mask); |
| 495 | if (ret) { |
| 496 | bl_free_device(top); |
| 497 | kfree(top); |
| 498 | goto out_free_volumes; |
| 499 | } |
| 500 | |
| 501 | node = &top->node; |
| 502 | nfs4_init_deviceid_node(node, server, &pdev->dev_id); |
| 503 | |
| 504 | out_free_volumes: |
| 505 | kfree(volumes); |
| 506 | out_free_scratch: |
| 507 | __free_page(scratch); |
| 508 | out: |
| 509 | return node; |
| 510 | } |