Commit | Line | Data |
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09c434b8 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
d67ae825 TH |
2 | /* |
3 | * Module for pnfs flexfile layout driver. | |
4 | * | |
5 | * Copyright (c) 2014, Primary Data, Inc. All rights reserved. | |
6 | * | |
7 | * Tao Peng <bergwolf@primarydata.com> | |
8 | */ | |
9 | ||
10 | #include <linux/nfs_fs.h> | |
7af46292 | 11 | #include <linux/nfs_mount.h> |
d67ae825 TH |
12 | #include <linux/nfs_page.h> |
13 | #include <linux/module.h> | |
97f68c6b | 14 | #include <linux/sched/mm.h> |
d67ae825 TH |
15 | |
16 | #include <linux/sunrpc/metrics.h> | |
d67ae825 TH |
17 | |
18 | #include "flexfilelayout.h" | |
19 | #include "../nfs4session.h" | |
40c64c26 | 20 | #include "../nfs4idmap.h" |
d67ae825 TH |
21 | #include "../internal.h" |
22 | #include "../delegation.h" | |
23 | #include "../nfs4trace.h" | |
24 | #include "../iostat.h" | |
25 | #include "../nfs.h" | |
ad4dc53e | 26 | #include "../nfs42.h" |
d67ae825 TH |
27 | |
28 | #define NFSDBG_FACILITY NFSDBG_PNFS_LD | |
29 | ||
30 | #define FF_LAYOUT_POLL_RETRY_MAX (15*HZ) | |
5b9b3c85 TM |
31 | #define FF_LAYOUTRETURN_MAXERR 20 |
32 | ||
33344e0f TM |
33 | static unsigned short io_maxretrans; |
34 | ||
54e4a0df TM |
35 | static void ff_layout_read_record_layoutstats_done(struct rpc_task *task, |
36 | struct nfs_pgio_header *hdr); | |
230bc962 TM |
37 | static int ff_layout_mirror_prepare_stats(struct pnfs_layout_hdr *lo, |
38 | struct nfs42_layoutstat_devinfo *devinfo, | |
39 | int dev_limit); | |
40 | static void ff_layout_encode_ff_layoutupdate(struct xdr_stream *xdr, | |
41 | const struct nfs42_layoutstat_devinfo *devinfo, | |
42 | struct nfs4_ff_layout_mirror *mirror); | |
54e4a0df | 43 | |
d67ae825 TH |
44 | static struct pnfs_layout_hdr * |
45 | ff_layout_alloc_layout_hdr(struct inode *inode, gfp_t gfp_flags) | |
46 | { | |
47 | struct nfs4_flexfile_layout *ffl; | |
48 | ||
49 | ffl = kzalloc(sizeof(*ffl), gfp_flags); | |
50 | if (ffl) { | |
51 | INIT_LIST_HEAD(&ffl->error_list); | |
266d12d4 | 52 | INIT_LIST_HEAD(&ffl->mirrors); |
1c8d477a | 53 | ffl->last_report_time = ktime_get(); |
d67ae825 TH |
54 | return &ffl->generic_hdr; |
55 | } else | |
56 | return NULL; | |
57 | } | |
58 | ||
59 | static void | |
60 | ff_layout_free_layout_hdr(struct pnfs_layout_hdr *lo) | |
61 | { | |
62 | struct nfs4_ff_layout_ds_err *err, *n; | |
63 | ||
64 | list_for_each_entry_safe(err, n, &FF_LAYOUT_FROM_HDR(lo)->error_list, | |
65 | list) { | |
66 | list_del(&err->list); | |
67 | kfree(err); | |
68 | } | |
69 | kfree(FF_LAYOUT_FROM_HDR(lo)); | |
70 | } | |
71 | ||
93b717fd | 72 | static int decode_pnfs_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) |
d67ae825 TH |
73 | { |
74 | __be32 *p; | |
75 | ||
76 | p = xdr_inline_decode(xdr, NFS4_STATEID_SIZE); | |
77 | if (unlikely(p == NULL)) | |
78 | return -ENOBUFS; | |
93b717fd TM |
79 | stateid->type = NFS4_PNFS_DS_STATEID_TYPE; |
80 | memcpy(stateid->data, p, NFS4_STATEID_SIZE); | |
d67ae825 TH |
81 | dprintk("%s: stateid id= [%x%x%x%x]\n", __func__, |
82 | p[0], p[1], p[2], p[3]); | |
83 | return 0; | |
84 | } | |
85 | ||
86 | static int decode_deviceid(struct xdr_stream *xdr, struct nfs4_deviceid *devid) | |
87 | { | |
88 | __be32 *p; | |
89 | ||
90 | p = xdr_inline_decode(xdr, NFS4_DEVICEID4_SIZE); | |
91 | if (unlikely(!p)) | |
92 | return -ENOBUFS; | |
93 | memcpy(devid, p, NFS4_DEVICEID4_SIZE); | |
94 | nfs4_print_deviceid(devid); | |
95 | return 0; | |
96 | } | |
97 | ||
98 | static int decode_nfs_fh(struct xdr_stream *xdr, struct nfs_fh *fh) | |
99 | { | |
100 | __be32 *p; | |
101 | ||
102 | p = xdr_inline_decode(xdr, 4); | |
103 | if (unlikely(!p)) | |
104 | return -ENOBUFS; | |
105 | fh->size = be32_to_cpup(p++); | |
106 | if (fh->size > sizeof(struct nfs_fh)) { | |
107 | printk(KERN_ERR "NFS flexfiles: Too big fh received %d\n", | |
108 | fh->size); | |
109 | return -EOVERFLOW; | |
110 | } | |
111 | /* fh.data */ | |
112 | p = xdr_inline_decode(xdr, fh->size); | |
113 | if (unlikely(!p)) | |
114 | return -ENOBUFS; | |
115 | memcpy(&fh->data, p, fh->size); | |
116 | dprintk("%s: fh len %d\n", __func__, fh->size); | |
117 | ||
118 | return 0; | |
119 | } | |
120 | ||
121 | /* | |
122 | * Currently only stringified uids and gids are accepted. | |
123 | * I.e., kerberos is not supported to the DSes, so no pricipals. | |
124 | * | |
125 | * That means that one common function will suffice, but when | |
126 | * principals are added, this should be split to accomodate | |
127 | * calls to both nfs_map_name_to_uid() and nfs_map_group_to_gid(). | |
128 | */ | |
129 | static int | |
130 | decode_name(struct xdr_stream *xdr, u32 *id) | |
131 | { | |
132 | __be32 *p; | |
133 | int len; | |
134 | ||
135 | /* opaque_length(4)*/ | |
136 | p = xdr_inline_decode(xdr, 4); | |
137 | if (unlikely(!p)) | |
138 | return -ENOBUFS; | |
139 | len = be32_to_cpup(p++); | |
140 | if (len < 0) | |
141 | return -EINVAL; | |
142 | ||
143 | dprintk("%s: len %u\n", __func__, len); | |
144 | ||
145 | /* opaque body */ | |
146 | p = xdr_inline_decode(xdr, len); | |
147 | if (unlikely(!p)) | |
148 | return -ENOBUFS; | |
149 | ||
150 | if (!nfs_map_string_to_numeric((char *)p, len, id)) | |
151 | return -EINVAL; | |
152 | ||
153 | return 0; | |
154 | } | |
155 | ||
266d12d4 TM |
156 | static bool ff_mirror_match_fh(const struct nfs4_ff_layout_mirror *m1, |
157 | const struct nfs4_ff_layout_mirror *m2) | |
158 | { | |
159 | int i, j; | |
160 | ||
161 | if (m1->fh_versions_cnt != m2->fh_versions_cnt) | |
162 | return false; | |
163 | for (i = 0; i < m1->fh_versions_cnt; i++) { | |
164 | bool found_fh = false; | |
86fb449b | 165 | for (j = 0; j < m2->fh_versions_cnt; j++) { |
266d12d4 TM |
166 | if (nfs_compare_fh(&m1->fh_versions[i], |
167 | &m2->fh_versions[j]) == 0) { | |
168 | found_fh = true; | |
169 | break; | |
170 | } | |
171 | } | |
172 | if (!found_fh) | |
173 | return false; | |
174 | } | |
175 | return true; | |
176 | } | |
177 | ||
178 | static struct nfs4_ff_layout_mirror * | |
179 | ff_layout_add_mirror(struct pnfs_layout_hdr *lo, | |
180 | struct nfs4_ff_layout_mirror *mirror) | |
181 | { | |
182 | struct nfs4_flexfile_layout *ff_layout = FF_LAYOUT_FROM_HDR(lo); | |
183 | struct nfs4_ff_layout_mirror *pos; | |
184 | struct inode *inode = lo->plh_inode; | |
185 | ||
186 | spin_lock(&inode->i_lock); | |
187 | list_for_each_entry(pos, &ff_layout->mirrors, mirrors) { | |
65990d1a | 188 | if (memcmp(&mirror->devid, &pos->devid, sizeof(pos->devid)) != 0) |
266d12d4 TM |
189 | continue; |
190 | if (!ff_mirror_match_fh(mirror, pos)) | |
191 | continue; | |
81a090b9 | 192 | if (refcount_inc_not_zero(&pos->ref)) { |
266d12d4 TM |
193 | spin_unlock(&inode->i_lock); |
194 | return pos; | |
195 | } | |
196 | } | |
197 | list_add(&mirror->mirrors, &ff_layout->mirrors); | |
198 | mirror->layout = lo; | |
199 | spin_unlock(&inode->i_lock); | |
200 | return mirror; | |
201 | } | |
202 | ||
e3b1df2d | 203 | static void |
266d12d4 TM |
204 | ff_layout_remove_mirror(struct nfs4_ff_layout_mirror *mirror) |
205 | { | |
206 | struct inode *inode; | |
207 | if (mirror->layout == NULL) | |
208 | return; | |
209 | inode = mirror->layout->plh_inode; | |
210 | spin_lock(&inode->i_lock); | |
211 | list_del(&mirror->mirrors); | |
212 | spin_unlock(&inode->i_lock); | |
213 | mirror->layout = NULL; | |
214 | } | |
215 | ||
28a0d72c TM |
216 | static struct nfs4_ff_layout_mirror *ff_layout_alloc_mirror(gfp_t gfp_flags) |
217 | { | |
218 | struct nfs4_ff_layout_mirror *mirror; | |
219 | ||
220 | mirror = kzalloc(sizeof(*mirror), gfp_flags); | |
221 | if (mirror != NULL) { | |
222 | spin_lock_init(&mirror->lock); | |
81a090b9 | 223 | refcount_set(&mirror->ref, 1); |
266d12d4 | 224 | INIT_LIST_HEAD(&mirror->mirrors); |
28a0d72c TM |
225 | } |
226 | return mirror; | |
227 | } | |
228 | ||
229 | static void ff_layout_free_mirror(struct nfs4_ff_layout_mirror *mirror) | |
230 | { | |
a52458b4 | 231 | const struct cred *cred; |
3064b686 | 232 | |
266d12d4 | 233 | ff_layout_remove_mirror(mirror); |
28a0d72c | 234 | kfree(mirror->fh_versions); |
3064b686 | 235 | cred = rcu_access_pointer(mirror->ro_cred); |
a52458b4 | 236 | put_cred(cred); |
3064b686 | 237 | cred = rcu_access_pointer(mirror->rw_cred); |
a52458b4 | 238 | put_cred(cred); |
28a0d72c TM |
239 | nfs4_ff_layout_put_deviceid(mirror->mirror_ds); |
240 | kfree(mirror); | |
241 | } | |
242 | ||
243 | static void ff_layout_put_mirror(struct nfs4_ff_layout_mirror *mirror) | |
244 | { | |
81a090b9 | 245 | if (mirror != NULL && refcount_dec_and_test(&mirror->ref)) |
28a0d72c TM |
246 | ff_layout_free_mirror(mirror); |
247 | } | |
248 | ||
d67ae825 TH |
249 | static void ff_layout_free_mirror_array(struct nfs4_ff_layout_segment *fls) |
250 | { | |
251 | int i; | |
252 | ||
253 | if (fls->mirror_array) { | |
254 | for (i = 0; i < fls->mirror_array_cnt; i++) { | |
255 | /* normally mirror_ds is freed in | |
256 | * .free_deviceid_node but we still do it here | |
257 | * for .alloc_lseg error path */ | |
28a0d72c | 258 | ff_layout_put_mirror(fls->mirror_array[i]); |
d67ae825 TH |
259 | } |
260 | kfree(fls->mirror_array); | |
261 | fls->mirror_array = NULL; | |
262 | } | |
263 | } | |
264 | ||
265 | static int ff_layout_check_layout(struct nfs4_layoutget_res *lgr) | |
266 | { | |
267 | int ret = 0; | |
268 | ||
269 | dprintk("--> %s\n", __func__); | |
270 | ||
271 | /* FIXME: remove this check when layout segment support is added */ | |
272 | if (lgr->range.offset != 0 || | |
273 | lgr->range.length != NFS4_MAX_UINT64) { | |
274 | dprintk("%s Only whole file layouts supported. Use MDS i/o\n", | |
275 | __func__); | |
276 | ret = -EINVAL; | |
277 | } | |
278 | ||
279 | dprintk("--> %s returns %d\n", __func__, ret); | |
280 | return ret; | |
281 | } | |
282 | ||
283 | static void _ff_layout_free_lseg(struct nfs4_ff_layout_segment *fls) | |
284 | { | |
285 | if (fls) { | |
286 | ff_layout_free_mirror_array(fls); | |
287 | kfree(fls); | |
288 | } | |
289 | } | |
290 | ||
0762ed2c TM |
291 | static bool |
292 | ff_lseg_range_is_after(const struct pnfs_layout_range *l1, | |
293 | const struct pnfs_layout_range *l2) | |
294 | { | |
295 | u64 end1, end2; | |
296 | ||
297 | if (l1->iomode != l2->iomode) | |
298 | return l1->iomode != IOMODE_READ; | |
299 | end1 = pnfs_calc_offset_end(l1->offset, l1->length); | |
300 | end2 = pnfs_calc_offset_end(l2->offset, l2->length); | |
301 | if (end1 < l2->offset) | |
302 | return false; | |
303 | if (end2 < l1->offset) | |
304 | return true; | |
305 | return l2->offset <= l1->offset; | |
306 | } | |
307 | ||
308 | static bool | |
309 | ff_lseg_merge(struct pnfs_layout_segment *new, | |
310 | struct pnfs_layout_segment *old) | |
311 | { | |
312 | u64 new_end, old_end; | |
313 | ||
ee26bdd6 JL |
314 | if (test_bit(NFS_LSEG_LAYOUTRETURN, &old->pls_flags)) |
315 | return false; | |
0762ed2c TM |
316 | if (new->pls_range.iomode != old->pls_range.iomode) |
317 | return false; | |
318 | old_end = pnfs_calc_offset_end(old->pls_range.offset, | |
319 | old->pls_range.length); | |
320 | if (old_end < new->pls_range.offset) | |
321 | return false; | |
322 | new_end = pnfs_calc_offset_end(new->pls_range.offset, | |
323 | new->pls_range.length); | |
324 | if (new_end < old->pls_range.offset) | |
325 | return false; | |
326 | ||
327 | /* Mergeable: copy info from 'old' to 'new' */ | |
328 | if (new_end < old_end) | |
329 | new_end = old_end; | |
330 | if (new->pls_range.offset < old->pls_range.offset) | |
331 | new->pls_range.offset = old->pls_range.offset; | |
332 | new->pls_range.length = pnfs_calc_offset_length(new->pls_range.offset, | |
333 | new_end); | |
334 | if (test_bit(NFS_LSEG_ROC, &old->pls_flags)) | |
335 | set_bit(NFS_LSEG_ROC, &new->pls_flags); | |
0762ed2c TM |
336 | return true; |
337 | } | |
338 | ||
339 | static void | |
340 | ff_layout_add_lseg(struct pnfs_layout_hdr *lo, | |
341 | struct pnfs_layout_segment *lseg, | |
342 | struct list_head *free_me) | |
343 | { | |
344 | pnfs_generic_layout_insert_lseg(lo, lseg, | |
345 | ff_lseg_range_is_after, | |
346 | ff_lseg_merge, | |
347 | free_me); | |
348 | } | |
349 | ||
d67ae825 TH |
350 | static void ff_layout_sort_mirrors(struct nfs4_ff_layout_segment *fls) |
351 | { | |
d67ae825 TH |
352 | int i, j; |
353 | ||
354 | for (i = 0; i < fls->mirror_array_cnt - 1; i++) { | |
355 | for (j = i + 1; j < fls->mirror_array_cnt; j++) | |
356 | if (fls->mirror_array[i]->efficiency < | |
455b6ee6 FF |
357 | fls->mirror_array[j]->efficiency) |
358 | swap(fls->mirror_array[i], | |
359 | fls->mirror_array[j]); | |
d67ae825 TH |
360 | } |
361 | } | |
362 | ||
363 | static struct pnfs_layout_segment * | |
364 | ff_layout_alloc_lseg(struct pnfs_layout_hdr *lh, | |
365 | struct nfs4_layoutget_res *lgr, | |
366 | gfp_t gfp_flags) | |
367 | { | |
368 | struct pnfs_layout_segment *ret; | |
369 | struct nfs4_ff_layout_segment *fls = NULL; | |
370 | struct xdr_stream stream; | |
371 | struct xdr_buf buf; | |
372 | struct page *scratch; | |
373 | u64 stripe_unit; | |
374 | u32 mirror_array_cnt; | |
375 | __be32 *p; | |
376 | int i, rc; | |
377 | ||
378 | dprintk("--> %s\n", __func__); | |
379 | scratch = alloc_page(gfp_flags); | |
380 | if (!scratch) | |
381 | return ERR_PTR(-ENOMEM); | |
382 | ||
383 | xdr_init_decode_pages(&stream, &buf, lgr->layoutp->pages, | |
384 | lgr->layoutp->len); | |
385 | xdr_set_scratch_buffer(&stream, page_address(scratch), PAGE_SIZE); | |
386 | ||
387 | /* stripe unit and mirror_array_cnt */ | |
388 | rc = -EIO; | |
389 | p = xdr_inline_decode(&stream, 8 + 4); | |
390 | if (!p) | |
391 | goto out_err_free; | |
392 | ||
393 | p = xdr_decode_hyper(p, &stripe_unit); | |
394 | mirror_array_cnt = be32_to_cpup(p++); | |
395 | dprintk("%s: stripe_unit=%llu mirror_array_cnt=%u\n", __func__, | |
396 | stripe_unit, mirror_array_cnt); | |
397 | ||
398 | if (mirror_array_cnt > NFS4_FLEXFILE_LAYOUT_MAX_MIRROR_CNT || | |
399 | mirror_array_cnt == 0) | |
400 | goto out_err_free; | |
401 | ||
402 | rc = -ENOMEM; | |
403 | fls = kzalloc(sizeof(*fls), gfp_flags); | |
404 | if (!fls) | |
405 | goto out_err_free; | |
406 | ||
407 | fls->mirror_array_cnt = mirror_array_cnt; | |
408 | fls->stripe_unit = stripe_unit; | |
409 | fls->mirror_array = kcalloc(fls->mirror_array_cnt, | |
410 | sizeof(fls->mirror_array[0]), gfp_flags); | |
411 | if (fls->mirror_array == NULL) | |
412 | goto out_err_free; | |
413 | ||
414 | for (i = 0; i < fls->mirror_array_cnt; i++) { | |
266d12d4 | 415 | struct nfs4_ff_layout_mirror *mirror; |
97f68c6b | 416 | struct cred *kcred; |
762bb7e9 | 417 | const struct cred __rcu *cred; |
8276c902 N |
418 | kuid_t uid; |
419 | kgid_t gid; | |
90a0be00 | 420 | u32 ds_count, fh_count, id; |
d67ae825 TH |
421 | int j; |
422 | ||
423 | rc = -EIO; | |
424 | p = xdr_inline_decode(&stream, 4); | |
425 | if (!p) | |
426 | goto out_err_free; | |
427 | ds_count = be32_to_cpup(p); | |
428 | ||
429 | /* FIXME: allow for striping? */ | |
430 | if (ds_count != 1) | |
431 | goto out_err_free; | |
432 | ||
28a0d72c | 433 | fls->mirror_array[i] = ff_layout_alloc_mirror(gfp_flags); |
d67ae825 TH |
434 | if (fls->mirror_array[i] == NULL) { |
435 | rc = -ENOMEM; | |
436 | goto out_err_free; | |
437 | } | |
438 | ||
d67ae825 TH |
439 | fls->mirror_array[i]->ds_count = ds_count; |
440 | ||
441 | /* deviceid */ | |
65990d1a | 442 | rc = decode_deviceid(&stream, &fls->mirror_array[i]->devid); |
d67ae825 TH |
443 | if (rc) |
444 | goto out_err_free; | |
445 | ||
d67ae825 TH |
446 | /* efficiency */ |
447 | rc = -EIO; | |
448 | p = xdr_inline_decode(&stream, 4); | |
449 | if (!p) | |
450 | goto out_err_free; | |
451 | fls->mirror_array[i]->efficiency = be32_to_cpup(p); | |
452 | ||
453 | /* stateid */ | |
93b717fd | 454 | rc = decode_pnfs_stateid(&stream, &fls->mirror_array[i]->stateid); |
d67ae825 TH |
455 | if (rc) |
456 | goto out_err_free; | |
457 | ||
458 | /* fh */ | |
662f9a10 | 459 | rc = -EIO; |
d67ae825 TH |
460 | p = xdr_inline_decode(&stream, 4); |
461 | if (!p) | |
462 | goto out_err_free; | |
463 | fh_count = be32_to_cpup(p); | |
464 | ||
465 | fls->mirror_array[i]->fh_versions = | |
6396bb22 | 466 | kcalloc(fh_count, sizeof(struct nfs_fh), |
d67ae825 TH |
467 | gfp_flags); |
468 | if (fls->mirror_array[i]->fh_versions == NULL) { | |
469 | rc = -ENOMEM; | |
470 | goto out_err_free; | |
471 | } | |
472 | ||
473 | for (j = 0; j < fh_count; j++) { | |
474 | rc = decode_nfs_fh(&stream, | |
475 | &fls->mirror_array[i]->fh_versions[j]); | |
476 | if (rc) | |
477 | goto out_err_free; | |
478 | } | |
479 | ||
480 | fls->mirror_array[i]->fh_versions_cnt = fh_count; | |
481 | ||
482 | /* user */ | |
90a0be00 | 483 | rc = decode_name(&stream, &id); |
d67ae825 TH |
484 | if (rc) |
485 | goto out_err_free; | |
486 | ||
8276c902 | 487 | uid = make_kuid(&init_user_ns, id); |
90a0be00 | 488 | |
d67ae825 | 489 | /* group */ |
90a0be00 | 490 | rc = decode_name(&stream, &id); |
d67ae825 TH |
491 | if (rc) |
492 | goto out_err_free; | |
493 | ||
8276c902 | 494 | gid = make_kgid(&init_user_ns, id); |
90a0be00 | 495 | |
97f68c6b N |
496 | if (gfp_flags & __GFP_FS) |
497 | kcred = prepare_kernel_cred(NULL); | |
498 | else { | |
499 | unsigned int nofs_flags = memalloc_nofs_save(); | |
500 | kcred = prepare_kernel_cred(NULL); | |
501 | memalloc_nofs_restore(nofs_flags); | |
502 | } | |
503 | rc = -ENOMEM; | |
504 | if (!kcred) | |
505 | goto out_err_free; | |
8276c902 N |
506 | kcred->fsuid = uid; |
507 | kcred->fsgid = gid; | |
762bb7e9 | 508 | cred = RCU_INITIALIZER(kcred); |
90a0be00 | 509 | |
3064b686 JL |
510 | if (lgr->range.iomode == IOMODE_READ) |
511 | rcu_assign_pointer(fls->mirror_array[i]->ro_cred, cred); | |
512 | else | |
513 | rcu_assign_pointer(fls->mirror_array[i]->rw_cred, cred); | |
90a0be00 | 514 | |
266d12d4 TM |
515 | mirror = ff_layout_add_mirror(lh, fls->mirror_array[i]); |
516 | if (mirror != fls->mirror_array[i]) { | |
90a0be00 | 517 | /* swap cred ptrs so free_mirror will clean up old */ |
3064b686 JL |
518 | if (lgr->range.iomode == IOMODE_READ) { |
519 | cred = xchg(&mirror->ro_cred, cred); | |
520 | rcu_assign_pointer(fls->mirror_array[i]->ro_cred, cred); | |
521 | } else { | |
522 | cred = xchg(&mirror->rw_cred, cred); | |
523 | rcu_assign_pointer(fls->mirror_array[i]->rw_cred, cred); | |
524 | } | |
266d12d4 TM |
525 | ff_layout_free_mirror(fls->mirror_array[i]); |
526 | fls->mirror_array[i] = mirror; | |
527 | } | |
528 | ||
3064b686 JL |
529 | dprintk("%s: iomode %s uid %u gid %u\n", __func__, |
530 | lgr->range.iomode == IOMODE_READ ? "READ" : "RW", | |
8276c902 N |
531 | from_kuid(&init_user_ns, uid), |
532 | from_kgid(&init_user_ns, gid)); | |
d67ae825 TH |
533 | } |
534 | ||
c0f5f505 | 535 | p = xdr_inline_decode(&stream, 4); |
d0379a5d TM |
536 | if (!p) |
537 | goto out_sort_mirrors; | |
538 | fls->flags = be32_to_cpup(p); | |
539 | ||
540 | p = xdr_inline_decode(&stream, 4); | |
541 | if (!p) | |
542 | goto out_sort_mirrors; | |
543 | for (i=0; i < fls->mirror_array_cnt; i++) | |
544 | fls->mirror_array[i]->report_interval = be32_to_cpup(p); | |
c0f5f505 | 545 | |
d0379a5d | 546 | out_sort_mirrors: |
d67ae825 TH |
547 | ff_layout_sort_mirrors(fls); |
548 | rc = ff_layout_check_layout(lgr); | |
549 | if (rc) | |
550 | goto out_err_free; | |
d67ae825 TH |
551 | ret = &fls->generic_hdr; |
552 | dprintk("<-- %s (success)\n", __func__); | |
553 | out_free_page: | |
554 | __free_page(scratch); | |
555 | return ret; | |
556 | out_err_free: | |
557 | _ff_layout_free_lseg(fls); | |
558 | ret = ERR_PTR(rc); | |
559 | dprintk("<-- %s (%d)\n", __func__, rc); | |
560 | goto out_free_page; | |
561 | } | |
562 | ||
563 | static bool ff_layout_has_rw_segments(struct pnfs_layout_hdr *layout) | |
564 | { | |
565 | struct pnfs_layout_segment *lseg; | |
566 | ||
567 | list_for_each_entry(lseg, &layout->plh_segs, pls_list) | |
568 | if (lseg->pls_range.iomode == IOMODE_RW) | |
569 | return true; | |
570 | ||
571 | return false; | |
572 | } | |
573 | ||
574 | static void | |
575 | ff_layout_free_lseg(struct pnfs_layout_segment *lseg) | |
576 | { | |
577 | struct nfs4_ff_layout_segment *fls = FF_LAYOUT_LSEG(lseg); | |
d67ae825 TH |
578 | |
579 | dprintk("--> %s\n", __func__); | |
580 | ||
d67ae825 TH |
581 | if (lseg->pls_range.iomode == IOMODE_RW) { |
582 | struct nfs4_flexfile_layout *ffl; | |
583 | struct inode *inode; | |
584 | ||
585 | ffl = FF_LAYOUT_FROM_HDR(lseg->pls_layout); | |
586 | inode = ffl->generic_hdr.plh_inode; | |
587 | spin_lock(&inode->i_lock); | |
588 | if (!ff_layout_has_rw_segments(lseg->pls_layout)) { | |
589 | ffl->commit_info.nbuckets = 0; | |
590 | kfree(ffl->commit_info.buckets); | |
591 | ffl->commit_info.buckets = NULL; | |
592 | } | |
593 | spin_unlock(&inode->i_lock); | |
594 | } | |
595 | _ff_layout_free_lseg(fls); | |
596 | } | |
597 | ||
598 | /* Return 1 until we have multiple lsegs support */ | |
599 | static int | |
600 | ff_layout_get_lseg_count(struct nfs4_ff_layout_segment *fls) | |
601 | { | |
602 | return 1; | |
603 | } | |
604 | ||
abcb7bfc | 605 | static void |
e76d28dd | 606 | nfs4_ff_start_busy_timer(struct nfs4_ff_busy_timer *timer, ktime_t now) |
abcb7bfc | 607 | { |
9bbd9bb4 PT |
608 | /* first IO request? */ |
609 | if (atomic_inc_return(&timer->n_ops) == 1) { | |
e76d28dd | 610 | timer->start_time = now; |
abcb7bfc TM |
611 | } |
612 | } | |
613 | ||
614 | static ktime_t | |
e76d28dd | 615 | nfs4_ff_end_busy_timer(struct nfs4_ff_busy_timer *timer, ktime_t now) |
abcb7bfc | 616 | { |
e76d28dd | 617 | ktime_t start; |
abcb7bfc | 618 | |
9bbd9bb4 PT |
619 | if (atomic_dec_return(&timer->n_ops) < 0) |
620 | WARN_ON_ONCE(1); | |
621 | ||
9bbd9bb4 PT |
622 | start = timer->start_time; |
623 | timer->start_time = now; | |
abcb7bfc TM |
624 | return ktime_sub(now, start); |
625 | } | |
626 | ||
97ba375b | 627 | static bool |
d983803d | 628 | nfs4_ff_layoutstat_start_io(struct nfs4_ff_layout_mirror *mirror, |
e76d28dd TM |
629 | struct nfs4_ff_layoutstat *layoutstat, |
630 | ktime_t now) | |
abcb7bfc | 631 | { |
bbf58bf3 | 632 | s64 report_interval = FF_LAYOUTSTATS_REPORT_INTERVAL; |
1c8d477a | 633 | struct nfs4_flexfile_layout *ffl = FF_LAYOUT_FROM_HDR(mirror->layout); |
d983803d | 634 | |
e76d28dd | 635 | nfs4_ff_start_busy_timer(&layoutstat->busy_timer, now); |
1f3a8e49 | 636 | if (!mirror->start_time) |
9bbd9bb4 | 637 | mirror->start_time = now; |
d0379a5d TM |
638 | if (mirror->report_interval != 0) |
639 | report_interval = (s64)mirror->report_interval * 1000LL; | |
640 | else if (layoutstats_timer != 0) | |
bbf58bf3 | 641 | report_interval = (s64)layoutstats_timer * 1000LL; |
1c8d477a | 642 | if (ktime_to_ms(ktime_sub(now, ffl->last_report_time)) >= |
bbf58bf3 | 643 | report_interval) { |
1c8d477a | 644 | ffl->last_report_time = now; |
97ba375b PT |
645 | return true; |
646 | } | |
647 | ||
648 | return false; | |
abcb7bfc TM |
649 | } |
650 | ||
651 | static void | |
652 | nfs4_ff_layout_stat_io_update_requested(struct nfs4_ff_layoutstat *layoutstat, | |
653 | __u64 requested) | |
654 | { | |
655 | struct nfs4_ff_io_stat *iostat = &layoutstat->io_stat; | |
656 | ||
657 | iostat->ops_requested++; | |
658 | iostat->bytes_requested += requested; | |
659 | } | |
660 | ||
661 | static void | |
662 | nfs4_ff_layout_stat_io_update_completed(struct nfs4_ff_layoutstat *layoutstat, | |
663 | __u64 requested, | |
664 | __u64 completed, | |
e76d28dd TM |
665 | ktime_t time_completed, |
666 | ktime_t time_started) | |
abcb7bfc TM |
667 | { |
668 | struct nfs4_ff_io_stat *iostat = &layoutstat->io_stat; | |
e76d28dd | 669 | ktime_t completion_time = ktime_sub(time_completed, time_started); |
abcb7bfc TM |
670 | ktime_t timer; |
671 | ||
672 | iostat->ops_completed++; | |
673 | iostat->bytes_completed += completed; | |
674 | iostat->bytes_not_delivered += requested - completed; | |
675 | ||
e76d28dd | 676 | timer = nfs4_ff_end_busy_timer(&layoutstat->busy_timer, time_completed); |
abcb7bfc TM |
677 | iostat->total_busy_time = |
678 | ktime_add(iostat->total_busy_time, timer); | |
679 | iostat->aggregate_completion_time = | |
e76d28dd TM |
680 | ktime_add(iostat->aggregate_completion_time, |
681 | completion_time); | |
abcb7bfc TM |
682 | } |
683 | ||
684 | static void | |
0b7baf94 TM |
685 | nfs4_ff_layout_stat_io_start_read(struct inode *inode, |
686 | struct nfs4_ff_layout_mirror *mirror, | |
e76d28dd | 687 | __u64 requested, ktime_t now) |
abcb7bfc | 688 | { |
97ba375b PT |
689 | bool report; |
690 | ||
abcb7bfc | 691 | spin_lock(&mirror->lock); |
e76d28dd | 692 | report = nfs4_ff_layoutstat_start_io(mirror, &mirror->read_stat, now); |
abcb7bfc | 693 | nfs4_ff_layout_stat_io_update_requested(&mirror->read_stat, requested); |
06946c6a | 694 | set_bit(NFS4_FF_MIRROR_STAT_AVAIL, &mirror->flags); |
abcb7bfc | 695 | spin_unlock(&mirror->lock); |
97ba375b PT |
696 | |
697 | if (report) | |
0b7baf94 | 698 | pnfs_report_layoutstat(inode, GFP_KERNEL); |
abcb7bfc TM |
699 | } |
700 | ||
701 | static void | |
702 | nfs4_ff_layout_stat_io_end_read(struct rpc_task *task, | |
703 | struct nfs4_ff_layout_mirror *mirror, | |
704 | __u64 requested, | |
705 | __u64 completed) | |
706 | { | |
707 | spin_lock(&mirror->lock); | |
708 | nfs4_ff_layout_stat_io_update_completed(&mirror->read_stat, | |
709 | requested, completed, | |
e76d28dd | 710 | ktime_get(), task->tk_start); |
06946c6a | 711 | set_bit(NFS4_FF_MIRROR_STAT_AVAIL, &mirror->flags); |
abcb7bfc TM |
712 | spin_unlock(&mirror->lock); |
713 | } | |
714 | ||
715 | static void | |
0b7baf94 TM |
716 | nfs4_ff_layout_stat_io_start_write(struct inode *inode, |
717 | struct nfs4_ff_layout_mirror *mirror, | |
e76d28dd | 718 | __u64 requested, ktime_t now) |
abcb7bfc | 719 | { |
97ba375b PT |
720 | bool report; |
721 | ||
abcb7bfc | 722 | spin_lock(&mirror->lock); |
e76d28dd | 723 | report = nfs4_ff_layoutstat_start_io(mirror , &mirror->write_stat, now); |
abcb7bfc | 724 | nfs4_ff_layout_stat_io_update_requested(&mirror->write_stat, requested); |
06946c6a | 725 | set_bit(NFS4_FF_MIRROR_STAT_AVAIL, &mirror->flags); |
abcb7bfc | 726 | spin_unlock(&mirror->lock); |
97ba375b PT |
727 | |
728 | if (report) | |
0b7baf94 | 729 | pnfs_report_layoutstat(inode, GFP_NOIO); |
abcb7bfc TM |
730 | } |
731 | ||
732 | static void | |
733 | nfs4_ff_layout_stat_io_end_write(struct rpc_task *task, | |
734 | struct nfs4_ff_layout_mirror *mirror, | |
735 | __u64 requested, | |
736 | __u64 completed, | |
737 | enum nfs3_stable_how committed) | |
738 | { | |
739 | if (committed == NFS_UNSTABLE) | |
740 | requested = completed = 0; | |
741 | ||
742 | spin_lock(&mirror->lock); | |
743 | nfs4_ff_layout_stat_io_update_completed(&mirror->write_stat, | |
e76d28dd | 744 | requested, completed, ktime_get(), task->tk_start); |
06946c6a | 745 | set_bit(NFS4_FF_MIRROR_STAT_AVAIL, &mirror->flags); |
abcb7bfc TM |
746 | spin_unlock(&mirror->lock); |
747 | } | |
748 | ||
d67ae825 TH |
749 | static int |
750 | ff_layout_alloc_commit_info(struct pnfs_layout_segment *lseg, | |
751 | struct nfs_commit_info *cinfo, | |
752 | gfp_t gfp_flags) | |
753 | { | |
754 | struct nfs4_ff_layout_segment *fls = FF_LAYOUT_LSEG(lseg); | |
755 | struct pnfs_commit_bucket *buckets; | |
756 | int size; | |
757 | ||
758 | if (cinfo->ds->nbuckets != 0) { | |
759 | /* This assumes there is only one RW lseg per file. | |
760 | * To support multiple lseg per file, we need to | |
761 | * change struct pnfs_commit_bucket to allow dynamic | |
762 | * increasing nbuckets. | |
763 | */ | |
764 | return 0; | |
765 | } | |
766 | ||
767 | size = ff_layout_get_lseg_count(fls) * FF_LAYOUT_MIRROR_COUNT(lseg); | |
768 | ||
769 | buckets = kcalloc(size, sizeof(struct pnfs_commit_bucket), | |
770 | gfp_flags); | |
771 | if (!buckets) | |
772 | return -ENOMEM; | |
773 | else { | |
774 | int i; | |
775 | ||
fe238e60 | 776 | spin_lock(&cinfo->inode->i_lock); |
d67ae825 TH |
777 | if (cinfo->ds->nbuckets != 0) |
778 | kfree(buckets); | |
779 | else { | |
780 | cinfo->ds->buckets = buckets; | |
781 | cinfo->ds->nbuckets = size; | |
782 | for (i = 0; i < size; i++) { | |
783 | INIT_LIST_HEAD(&buckets[i].written); | |
784 | INIT_LIST_HEAD(&buckets[i].committing); | |
785 | /* mark direct verifier as unset */ | |
786 | buckets[i].direct_verf.committed = | |
787 | NFS_INVALID_STABLE_HOW; | |
788 | } | |
789 | } | |
fe238e60 | 790 | spin_unlock(&cinfo->inode->i_lock); |
d67ae825 TH |
791 | return 0; |
792 | } | |
793 | } | |
794 | ||
76c66905 TM |
795 | static void |
796 | ff_layout_mark_ds_unreachable(struct pnfs_layout_segment *lseg, int idx) | |
797 | { | |
798 | struct nfs4_deviceid_node *devid = FF_LAYOUT_DEVID_NODE(lseg, idx); | |
799 | ||
800 | if (devid) | |
801 | nfs4_mark_deviceid_unavailable(devid); | |
802 | } | |
803 | ||
804 | static void | |
805 | ff_layout_mark_ds_reachable(struct pnfs_layout_segment *lseg, int idx) | |
806 | { | |
807 | struct nfs4_deviceid_node *devid = FF_LAYOUT_DEVID_NODE(lseg, idx); | |
808 | ||
809 | if (devid) | |
810 | nfs4_mark_deviceid_available(devid); | |
811 | } | |
812 | ||
d67ae825 | 813 | static struct nfs4_pnfs_ds * |
76c66905 TM |
814 | ff_layout_choose_ds_for_read(struct pnfs_layout_segment *lseg, |
815 | int start_idx, int *best_idx, | |
816 | bool check_device) | |
d67ae825 | 817 | { |
13544412 | 818 | struct nfs4_ff_layout_segment *fls = FF_LAYOUT_LSEG(lseg); |
2444ff27 | 819 | struct nfs4_ff_layout_mirror *mirror; |
d67ae825 | 820 | struct nfs4_pnfs_ds *ds; |
3dc14735 | 821 | bool fail_return = false; |
d67ae825 TH |
822 | int idx; |
823 | ||
76c66905 | 824 | /* mirrors are initially sorted by efficiency */ |
13544412 | 825 | for (idx = start_idx; idx < fls->mirror_array_cnt; idx++) { |
3dc14735 | 826 | if (idx+1 == fls->mirror_array_cnt) |
76c66905 | 827 | fail_return = !check_device; |
2444ff27 TM |
828 | |
829 | mirror = FF_LAYOUT_COMP(lseg, idx); | |
76c66905 TM |
830 | ds = nfs4_ff_layout_prepare_ds(lseg, mirror, fail_return); |
831 | if (!ds) | |
2444ff27 TM |
832 | continue; |
833 | ||
76c66905 TM |
834 | if (check_device && |
835 | nfs4_test_deviceid_unavailable(&mirror->mirror_ds->id_node)) | |
836 | continue; | |
837 | ||
838 | *best_idx = idx; | |
839 | return ds; | |
d67ae825 TH |
840 | } |
841 | ||
842 | return NULL; | |
843 | } | |
844 | ||
76c66905 TM |
845 | static struct nfs4_pnfs_ds * |
846 | ff_layout_choose_any_ds_for_read(struct pnfs_layout_segment *lseg, | |
847 | int start_idx, int *best_idx) | |
848 | { | |
849 | return ff_layout_choose_ds_for_read(lseg, start_idx, best_idx, false); | |
850 | } | |
851 | ||
852 | static struct nfs4_pnfs_ds * | |
853 | ff_layout_choose_valid_ds_for_read(struct pnfs_layout_segment *lseg, | |
854 | int start_idx, int *best_idx) | |
855 | { | |
856 | return ff_layout_choose_ds_for_read(lseg, start_idx, best_idx, true); | |
857 | } | |
858 | ||
859 | static struct nfs4_pnfs_ds * | |
860 | ff_layout_choose_best_ds_for_read(struct pnfs_layout_segment *lseg, | |
861 | int start_idx, int *best_idx) | |
862 | { | |
863 | struct nfs4_pnfs_ds *ds; | |
864 | ||
865 | ds = ff_layout_choose_valid_ds_for_read(lseg, start_idx, best_idx); | |
866 | if (ds) | |
867 | return ds; | |
868 | return ff_layout_choose_any_ds_for_read(lseg, start_idx, best_idx); | |
869 | } | |
870 | ||
c7d73af2 TH |
871 | static void |
872 | ff_layout_pg_get_read(struct nfs_pageio_descriptor *pgio, | |
873 | struct nfs_page *req, | |
874 | bool strict_iomode) | |
875 | { | |
c7d73af2 TH |
876 | pnfs_put_lseg(pgio->pg_lseg); |
877 | pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode, | |
9fcd5960 | 878 | nfs_req_openctx(req), |
c7d73af2 TH |
879 | 0, |
880 | NFS4_MAX_UINT64, | |
881 | IOMODE_READ, | |
882 | strict_iomode, | |
883 | GFP_KERNEL); | |
884 | if (IS_ERR(pgio->pg_lseg)) { | |
885 | pgio->pg_error = PTR_ERR(pgio->pg_lseg); | |
886 | pgio->pg_lseg = NULL; | |
887 | } | |
c7d73af2 TH |
888 | } |
889 | ||
d67ae825 TH |
890 | static void |
891 | ff_layout_pg_init_read(struct nfs_pageio_descriptor *pgio, | |
892 | struct nfs_page *req) | |
893 | { | |
894 | struct nfs_pgio_mirror *pgm; | |
895 | struct nfs4_ff_layout_mirror *mirror; | |
896 | struct nfs4_pnfs_ds *ds; | |
897 | int ds_idx; | |
898 | ||
3dc14735 | 899 | retry: |
b3230e80 | 900 | pnfs_generic_pg_check_layout(pgio); |
d67ae825 | 901 | /* Use full layout for now */ |
1c1aeaf1 | 902 | if (!pgio->pg_lseg) { |
c7d73af2 | 903 | ff_layout_pg_get_read(pgio, req, false); |
1c1aeaf1 TM |
904 | if (!pgio->pg_lseg) |
905 | goto out_nolseg; | |
906 | } | |
907 | if (ff_layout_avoid_read_on_rw(pgio->pg_lseg)) { | |
c7d73af2 | 908 | ff_layout_pg_get_read(pgio, req, true); |
1c1aeaf1 TM |
909 | if (!pgio->pg_lseg) |
910 | goto out_nolseg; | |
911 | } | |
d67ae825 | 912 | |
13544412 | 913 | ds = ff_layout_choose_best_ds_for_read(pgio->pg_lseg, 0, &ds_idx); |
446ca219 | 914 | if (!ds) { |
3dc14735 | 915 | if (!ff_layout_no_fallback_to_mds(pgio->pg_lseg)) |
446ca219 | 916 | goto out_mds; |
3dc14735 TM |
917 | pnfs_put_lseg(pgio->pg_lseg); |
918 | pgio->pg_lseg = NULL; | |
919 | /* Sleep for 1 second before retrying */ | |
920 | ssleep(1); | |
921 | goto retry; | |
446ca219 TH |
922 | } |
923 | ||
d67ae825 TH |
924 | mirror = FF_LAYOUT_COMP(pgio->pg_lseg, ds_idx); |
925 | ||
926 | pgio->pg_mirror_idx = ds_idx; | |
927 | ||
928 | /* read always uses only one mirror - idx 0 for pgio layer */ | |
929 | pgm = &pgio->pg_mirrors[0]; | |
930 | pgm->pg_bsize = mirror->mirror_ds->ds_versions[0].rsize; | |
931 | ||
7af46292 TM |
932 | if (NFS_SERVER(pgio->pg_inode)->flags & |
933 | (NFS_MOUNT_SOFT|NFS_MOUNT_SOFTERR)) | |
934 | pgio->pg_maxretrans = io_maxretrans; | |
d67ae825 | 935 | return; |
1c1aeaf1 TM |
936 | out_nolseg: |
937 | if (pgio->pg_error < 0) | |
938 | return; | |
d67ae825 | 939 | out_mds: |
d5b9216f TM |
940 | trace_pnfs_mds_fallback_pg_init_read(pgio->pg_inode, |
941 | 0, NFS4_MAX_UINT64, IOMODE_READ, | |
942 | NFS_I(pgio->pg_inode)->layout, | |
943 | pgio->pg_lseg); | |
d67ae825 TH |
944 | pnfs_put_lseg(pgio->pg_lseg); |
945 | pgio->pg_lseg = NULL; | |
7af46292 | 946 | pgio->pg_maxretrans = 0; |
d67ae825 TH |
947 | nfs_pageio_reset_read_mds(pgio); |
948 | } | |
949 | ||
950 | static void | |
951 | ff_layout_pg_init_write(struct nfs_pageio_descriptor *pgio, | |
952 | struct nfs_page *req) | |
953 | { | |
954 | struct nfs4_ff_layout_mirror *mirror; | |
955 | struct nfs_pgio_mirror *pgm; | |
956 | struct nfs_commit_info cinfo; | |
957 | struct nfs4_pnfs_ds *ds; | |
958 | int i; | |
959 | int status; | |
960 | ||
3dc14735 | 961 | retry: |
b3230e80 | 962 | pnfs_generic_pg_check_layout(pgio); |
d600ad1f | 963 | if (!pgio->pg_lseg) { |
d67ae825 | 964 | pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode, |
9fcd5960 | 965 | nfs_req_openctx(req), |
d67ae825 TH |
966 | 0, |
967 | NFS4_MAX_UINT64, | |
968 | IOMODE_RW, | |
c7d73af2 | 969 | false, |
d67ae825 | 970 | GFP_NOFS); |
d600ad1f PT |
971 | if (IS_ERR(pgio->pg_lseg)) { |
972 | pgio->pg_error = PTR_ERR(pgio->pg_lseg); | |
973 | pgio->pg_lseg = NULL; | |
974 | return; | |
975 | } | |
976 | } | |
d67ae825 TH |
977 | /* If no lseg, fall back to write through mds */ |
978 | if (pgio->pg_lseg == NULL) | |
979 | goto out_mds; | |
980 | ||
981 | nfs_init_cinfo(&cinfo, pgio->pg_inode, pgio->pg_dreq); | |
982 | status = ff_layout_alloc_commit_info(pgio->pg_lseg, &cinfo, GFP_NOFS); | |
983 | if (status < 0) | |
984 | goto out_mds; | |
985 | ||
986 | /* Use a direct mapping of ds_idx to pgio mirror_idx */ | |
987 | if (WARN_ON_ONCE(pgio->pg_mirror_count != | |
988 | FF_LAYOUT_MIRROR_COUNT(pgio->pg_lseg))) | |
989 | goto out_mds; | |
990 | ||
991 | for (i = 0; i < pgio->pg_mirror_count; i++) { | |
2444ff27 | 992 | mirror = FF_LAYOUT_COMP(pgio->pg_lseg, i); |
2444ff27 | 993 | ds = nfs4_ff_layout_prepare_ds(pgio->pg_lseg, mirror, true); |
446ca219 | 994 | if (!ds) { |
3dc14735 | 995 | if (!ff_layout_no_fallback_to_mds(pgio->pg_lseg)) |
446ca219 | 996 | goto out_mds; |
3dc14735 TM |
997 | pnfs_put_lseg(pgio->pg_lseg); |
998 | pgio->pg_lseg = NULL; | |
999 | /* Sleep for 1 second before retrying */ | |
1000 | ssleep(1); | |
1001 | goto retry; | |
446ca219 | 1002 | } |
d67ae825 | 1003 | pgm = &pgio->pg_mirrors[i]; |
d67ae825 TH |
1004 | pgm->pg_bsize = mirror->mirror_ds->ds_versions[0].wsize; |
1005 | } | |
1006 | ||
7af46292 TM |
1007 | if (NFS_SERVER(pgio->pg_inode)->flags & |
1008 | (NFS_MOUNT_SOFT|NFS_MOUNT_SOFTERR)) | |
1009 | pgio->pg_maxretrans = io_maxretrans; | |
d67ae825 TH |
1010 | return; |
1011 | ||
1012 | out_mds: | |
d5b9216f TM |
1013 | trace_pnfs_mds_fallback_pg_init_write(pgio->pg_inode, |
1014 | 0, NFS4_MAX_UINT64, IOMODE_RW, | |
1015 | NFS_I(pgio->pg_inode)->layout, | |
1016 | pgio->pg_lseg); | |
d67ae825 TH |
1017 | pnfs_put_lseg(pgio->pg_lseg); |
1018 | pgio->pg_lseg = NULL; | |
7af46292 | 1019 | pgio->pg_maxretrans = 0; |
d67ae825 TH |
1020 | nfs_pageio_reset_write_mds(pgio); |
1021 | } | |
1022 | ||
1023 | static unsigned int | |
1024 | ff_layout_pg_get_mirror_count_write(struct nfs_pageio_descriptor *pgio, | |
1025 | struct nfs_page *req) | |
1026 | { | |
d600ad1f | 1027 | if (!pgio->pg_lseg) { |
d67ae825 | 1028 | pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode, |
9fcd5960 | 1029 | nfs_req_openctx(req), |
d67ae825 TH |
1030 | 0, |
1031 | NFS4_MAX_UINT64, | |
1032 | IOMODE_RW, | |
c7d73af2 | 1033 | false, |
d67ae825 | 1034 | GFP_NOFS); |
d600ad1f PT |
1035 | if (IS_ERR(pgio->pg_lseg)) { |
1036 | pgio->pg_error = PTR_ERR(pgio->pg_lseg); | |
1037 | pgio->pg_lseg = NULL; | |
1038 | goto out; | |
1039 | } | |
1040 | } | |
d67ae825 TH |
1041 | if (pgio->pg_lseg) |
1042 | return FF_LAYOUT_MIRROR_COUNT(pgio->pg_lseg); | |
1043 | ||
d5b9216f TM |
1044 | trace_pnfs_mds_fallback_pg_get_mirror_count(pgio->pg_inode, |
1045 | 0, NFS4_MAX_UINT64, IOMODE_RW, | |
1046 | NFS_I(pgio->pg_inode)->layout, | |
1047 | pgio->pg_lseg); | |
d67ae825 | 1048 | /* no lseg means that pnfs is not in use, so no mirroring here */ |
d67ae825 | 1049 | nfs_pageio_reset_write_mds(pgio); |
d600ad1f | 1050 | out: |
d67ae825 TH |
1051 | return 1; |
1052 | } | |
1053 | ||
1054 | static const struct nfs_pageio_ops ff_layout_pg_read_ops = { | |
1055 | .pg_init = ff_layout_pg_init_read, | |
1056 | .pg_test = pnfs_generic_pg_test, | |
1057 | .pg_doio = pnfs_generic_pg_readpages, | |
1058 | .pg_cleanup = pnfs_generic_pg_cleanup, | |
1059 | }; | |
1060 | ||
1061 | static const struct nfs_pageio_ops ff_layout_pg_write_ops = { | |
1062 | .pg_init = ff_layout_pg_init_write, | |
1063 | .pg_test = pnfs_generic_pg_test, | |
1064 | .pg_doio = pnfs_generic_pg_writepages, | |
1065 | .pg_get_mirror_count = ff_layout_pg_get_mirror_count_write, | |
1066 | .pg_cleanup = pnfs_generic_pg_cleanup, | |
1067 | }; | |
1068 | ||
1069 | static void ff_layout_reset_write(struct nfs_pgio_header *hdr, bool retry_pnfs) | |
1070 | { | |
1071 | struct rpc_task *task = &hdr->task; | |
1072 | ||
1073 | pnfs_layoutcommit_inode(hdr->inode, false); | |
1074 | ||
1075 | if (retry_pnfs) { | |
1076 | dprintk("%s Reset task %5u for i/o through pNFS " | |
1077 | "(req %s/%llu, %u bytes @ offset %llu)\n", __func__, | |
1078 | hdr->task.tk_pid, | |
1079 | hdr->inode->i_sb->s_id, | |
1080 | (unsigned long long)NFS_FILEID(hdr->inode), | |
1081 | hdr->args.count, | |
1082 | (unsigned long long)hdr->args.offset); | |
1083 | ||
dc602dd7 | 1084 | hdr->completion_ops->reschedule_io(hdr); |
d67ae825 TH |
1085 | return; |
1086 | } | |
1087 | ||
1088 | if (!test_and_set_bit(NFS_IOHDR_REDO, &hdr->flags)) { | |
1089 | dprintk("%s Reset task %5u for i/o through MDS " | |
1090 | "(req %s/%llu, %u bytes @ offset %llu)\n", __func__, | |
1091 | hdr->task.tk_pid, | |
1092 | hdr->inode->i_sb->s_id, | |
1093 | (unsigned long long)NFS_FILEID(hdr->inode), | |
1094 | hdr->args.count, | |
1095 | (unsigned long long)hdr->args.offset); | |
1096 | ||
d5b9216f TM |
1097 | trace_pnfs_mds_fallback_write_done(hdr->inode, |
1098 | hdr->args.offset, hdr->args.count, | |
1099 | IOMODE_RW, NFS_I(hdr->inode)->layout, | |
1100 | hdr->lseg); | |
d67ae825 TH |
1101 | task->tk_status = pnfs_write_done_resend_to_mds(hdr); |
1102 | } | |
1103 | } | |
1104 | ||
1105 | static void ff_layout_reset_read(struct nfs_pgio_header *hdr) | |
1106 | { | |
1107 | struct rpc_task *task = &hdr->task; | |
1108 | ||
1109 | pnfs_layoutcommit_inode(hdr->inode, false); | |
1110 | ||
1111 | if (!test_and_set_bit(NFS_IOHDR_REDO, &hdr->flags)) { | |
1112 | dprintk("%s Reset task %5u for i/o through MDS " | |
1113 | "(req %s/%llu, %u bytes @ offset %llu)\n", __func__, | |
1114 | hdr->task.tk_pid, | |
1115 | hdr->inode->i_sb->s_id, | |
1116 | (unsigned long long)NFS_FILEID(hdr->inode), | |
1117 | hdr->args.count, | |
1118 | (unsigned long long)hdr->args.offset); | |
1119 | ||
d5b9216f TM |
1120 | trace_pnfs_mds_fallback_read_done(hdr->inode, |
1121 | hdr->args.offset, hdr->args.count, | |
1122 | IOMODE_READ, NFS_I(hdr->inode)->layout, | |
1123 | hdr->lseg); | |
d67ae825 TH |
1124 | task->tk_status = pnfs_read_done_resend_to_mds(hdr); |
1125 | } | |
1126 | } | |
1127 | ||
1128 | static int ff_layout_async_handle_error_v4(struct rpc_task *task, | |
1129 | struct nfs4_state *state, | |
1130 | struct nfs_client *clp, | |
1131 | struct pnfs_layout_segment *lseg, | |
1132 | int idx) | |
1133 | { | |
1134 | struct pnfs_layout_hdr *lo = lseg->pls_layout; | |
1135 | struct inode *inode = lo->plh_inode; | |
d67ae825 | 1136 | struct nfs4_deviceid_node *devid = FF_LAYOUT_DEVID_NODE(lseg, idx); |
d67ae825 TH |
1137 | struct nfs4_slot_table *tbl = &clp->cl_session->fc_slot_table; |
1138 | ||
d67ae825 | 1139 | switch (task->tk_status) { |
d67ae825 TH |
1140 | case -NFS4ERR_BADSESSION: |
1141 | case -NFS4ERR_BADSLOT: | |
1142 | case -NFS4ERR_BAD_HIGH_SLOT: | |
1143 | case -NFS4ERR_DEADSESSION: | |
1144 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: | |
1145 | case -NFS4ERR_SEQ_FALSE_RETRY: | |
1146 | case -NFS4ERR_SEQ_MISORDERED: | |
1147 | dprintk("%s ERROR %d, Reset session. Exchangeid " | |
1148 | "flags 0x%x\n", __func__, task->tk_status, | |
1149 | clp->cl_exchange_flags); | |
1150 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); | |
1151 | break; | |
1152 | case -NFS4ERR_DELAY: | |
1153 | case -NFS4ERR_GRACE: | |
1154 | rpc_delay(task, FF_LAYOUT_POLL_RETRY_MAX); | |
1155 | break; | |
1156 | case -NFS4ERR_RETRY_UNCACHED_REP: | |
1157 | break; | |
1158 | /* Invalidate Layout errors */ | |
1159 | case -NFS4ERR_PNFS_NO_LAYOUT: | |
1160 | case -ESTALE: /* mapped NFS4ERR_STALE */ | |
1161 | case -EBADHANDLE: /* mapped NFS4ERR_BADHANDLE */ | |
1162 | case -EISDIR: /* mapped NFS4ERR_ISDIR */ | |
1163 | case -NFS4ERR_FHEXPIRED: | |
1164 | case -NFS4ERR_WRONG_TYPE: | |
1165 | dprintk("%s Invalid layout error %d\n", __func__, | |
1166 | task->tk_status); | |
1167 | /* | |
1168 | * Destroy layout so new i/o will get a new layout. | |
1169 | * Layout will not be destroyed until all current lseg | |
1170 | * references are put. Mark layout as invalid to resend failed | |
1171 | * i/o and all i/o waiting on the slot table to the MDS until | |
1172 | * layout is destroyed and a new valid layout is obtained. | |
1173 | */ | |
1174 | pnfs_destroy_layout(NFS_I(inode)); | |
1175 | rpc_wake_up(&tbl->slot_tbl_waitq); | |
1176 | goto reset; | |
1177 | /* RPC connection errors */ | |
1178 | case -ECONNREFUSED: | |
1179 | case -EHOSTDOWN: | |
1180 | case -EHOSTUNREACH: | |
1181 | case -ENETUNREACH: | |
1182 | case -EIO: | |
1183 | case -ETIMEDOUT: | |
1184 | case -EPIPE: | |
1185 | dprintk("%s DS connection error %d\n", __func__, | |
1186 | task->tk_status); | |
1c48cee8 WAA |
1187 | nfs4_delete_deviceid(devid->ld, devid->nfs_client, |
1188 | &devid->deviceid); | |
d67ae825 TH |
1189 | rpc_wake_up(&tbl->slot_tbl_waitq); |
1190 | /* fall through */ | |
1191 | default: | |
3b13b4b3 | 1192 | if (ff_layout_avoid_mds_available_ds(lseg)) |
d67ae825 TH |
1193 | return -NFS4ERR_RESET_TO_PNFS; |
1194 | reset: | |
1195 | dprintk("%s Retry through MDS. Error %d\n", __func__, | |
1196 | task->tk_status); | |
1197 | return -NFS4ERR_RESET_TO_MDS; | |
1198 | } | |
d67ae825 TH |
1199 | task->tk_status = 0; |
1200 | return -EAGAIN; | |
d67ae825 TH |
1201 | } |
1202 | ||
1203 | /* Retry all errors through either pNFS or MDS except for -EJUKEBOX */ | |
1204 | static int ff_layout_async_handle_error_v3(struct rpc_task *task, | |
1205 | struct pnfs_layout_segment *lseg, | |
1206 | int idx) | |
1207 | { | |
1208 | struct nfs4_deviceid_node *devid = FF_LAYOUT_DEVID_NODE(lseg, idx); | |
1209 | ||
90816d1d TM |
1210 | switch (task->tk_status) { |
1211 | /* File access problems. Don't mark the device as unavailable */ | |
1212 | case -EACCES: | |
1213 | case -ESTALE: | |
1214 | case -EISDIR: | |
1215 | case -EBADHANDLE: | |
1216 | case -ELOOP: | |
1217 | case -ENOSPC: | |
1218 | break; | |
1219 | case -EJUKEBOX: | |
1220 | nfs_inc_stats(lseg->pls_layout->plh_inode, NFSIOS_DELAY); | |
1221 | goto out_retry; | |
1222 | default: | |
d67ae825 TH |
1223 | dprintk("%s DS connection error %d\n", __func__, |
1224 | task->tk_status); | |
1c48cee8 WAA |
1225 | nfs4_delete_deviceid(devid->ld, devid->nfs_client, |
1226 | &devid->deviceid); | |
d67ae825 | 1227 | } |
90816d1d TM |
1228 | /* FIXME: Need to prevent infinite looping here. */ |
1229 | return -NFS4ERR_RESET_TO_PNFS; | |
1230 | out_retry: | |
d67ae825 | 1231 | task->tk_status = 0; |
7eeea167 | 1232 | rpc_restart_call_prepare(task); |
d67ae825 TH |
1233 | rpc_delay(task, NFS_JUKEBOX_RETRY_TIME); |
1234 | return -EAGAIN; | |
1235 | } | |
1236 | ||
1237 | static int ff_layout_async_handle_error(struct rpc_task *task, | |
1238 | struct nfs4_state *state, | |
1239 | struct nfs_client *clp, | |
1240 | struct pnfs_layout_segment *lseg, | |
1241 | int idx) | |
1242 | { | |
1243 | int vers = clp->cl_nfs_mod->rpc_vers->number; | |
1244 | ||
76c66905 TM |
1245 | if (task->tk_status >= 0) { |
1246 | ff_layout_mark_ds_reachable(lseg, idx); | |
df3ab232 | 1247 | return 0; |
76c66905 | 1248 | } |
df3ab232 TM |
1249 | |
1250 | /* Handle the case of an invalid layout segment */ | |
1251 | if (!pnfs_is_valid_lseg(lseg)) | |
1252 | return -NFS4ERR_RESET_TO_PNFS; | |
1253 | ||
d67ae825 TH |
1254 | switch (vers) { |
1255 | case 3: | |
1256 | return ff_layout_async_handle_error_v3(task, lseg, idx); | |
1257 | case 4: | |
1258 | return ff_layout_async_handle_error_v4(task, state, clp, | |
1259 | lseg, idx); | |
1260 | default: | |
1261 | /* should never happen */ | |
1262 | WARN_ON_ONCE(1); | |
1263 | return 0; | |
1264 | } | |
1265 | } | |
1266 | ||
1267 | static void ff_layout_io_track_ds_error(struct pnfs_layout_segment *lseg, | |
1268 | int idx, u64 offset, u64 length, | |
dd52128a | 1269 | u32 status, int opnum, int error) |
d67ae825 TH |
1270 | { |
1271 | struct nfs4_ff_layout_mirror *mirror; | |
1272 | int err; | |
1273 | ||
dd52128a TM |
1274 | if (status == 0) { |
1275 | switch (error) { | |
1276 | case -ETIMEDOUT: | |
1277 | case -EPFNOSUPPORT: | |
1278 | case -EPROTONOSUPPORT: | |
1279 | case -EOPNOTSUPP: | |
1280 | case -ECONNREFUSED: | |
1281 | case -ECONNRESET: | |
1282 | case -EHOSTDOWN: | |
1283 | case -EHOSTUNREACH: | |
1284 | case -ENETUNREACH: | |
1285 | case -EADDRINUSE: | |
1286 | case -ENOBUFS: | |
1287 | case -EPIPE: | |
1288 | case -EPERM: | |
1289 | status = NFS4ERR_NXIO; | |
1290 | break; | |
1291 | case -EACCES: | |
1292 | status = NFS4ERR_ACCESS; | |
1293 | break; | |
1294 | default: | |
1295 | return; | |
1296 | } | |
1297 | } | |
1298 | ||
c22eeb86 PT |
1299 | switch (status) { |
1300 | case NFS4ERR_DELAY: | |
1301 | case NFS4ERR_GRACE: | |
1302 | return; | |
1303 | default: | |
1304 | break; | |
1305 | } | |
1306 | ||
d67ae825 TH |
1307 | mirror = FF_LAYOUT_COMP(lseg, idx); |
1308 | err = ff_layout_track_ds_error(FF_LAYOUT_FROM_HDR(lseg->pls_layout), | |
1309 | mirror, offset, length, status, opnum, | |
1310 | GFP_NOIO); | |
76c66905 TM |
1311 | if (status == NFS4ERR_NXIO) |
1312 | ff_layout_mark_ds_unreachable(lseg, idx); | |
f95c03b2 | 1313 | pnfs_error_mark_layout_for_return(lseg->pls_layout->plh_inode, lseg); |
d67ae825 TH |
1314 | dprintk("%s: err %d op %d status %u\n", __func__, err, opnum, status); |
1315 | } | |
1316 | ||
1317 | /* NFS_PROTO call done callback routines */ | |
d67ae825 TH |
1318 | static int ff_layout_read_done_cb(struct rpc_task *task, |
1319 | struct nfs_pgio_header *hdr) | |
1320 | { | |
166bd5b8 | 1321 | int new_idx = hdr->pgio_mirror_idx; |
d67ae825 TH |
1322 | int err; |
1323 | ||
1324 | trace_nfs4_pnfs_read(hdr, task->tk_status); | |
dd52128a | 1325 | if (task->tk_status < 0) |
d67ae825 TH |
1326 | ff_layout_io_track_ds_error(hdr->lseg, hdr->pgio_mirror_idx, |
1327 | hdr->args.offset, hdr->args.count, | |
dd52128a TM |
1328 | hdr->res.op_status, OP_READ, |
1329 | task->tk_status); | |
d67ae825 TH |
1330 | err = ff_layout_async_handle_error(task, hdr->args.context->state, |
1331 | hdr->ds_clp, hdr->lseg, | |
1332 | hdr->pgio_mirror_idx); | |
1333 | ||
42f86b44 TM |
1334 | clear_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags); |
1335 | clear_bit(NFS_IOHDR_RESEND_MDS, &hdr->flags); | |
d67ae825 TH |
1336 | switch (err) { |
1337 | case -NFS4ERR_RESET_TO_PNFS: | |
13544412 TM |
1338 | if (ff_layout_choose_best_ds_for_read(hdr->lseg, |
1339 | hdr->pgio_mirror_idx + 1, | |
166bd5b8 | 1340 | &new_idx)) |
f0922a6c | 1341 | goto out_layouterror; |
42f86b44 | 1342 | set_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags); |
d67ae825 TH |
1343 | return task->tk_status; |
1344 | case -NFS4ERR_RESET_TO_MDS: | |
42f86b44 | 1345 | set_bit(NFS_IOHDR_RESEND_MDS, &hdr->flags); |
d67ae825 TH |
1346 | return task->tk_status; |
1347 | case -EAGAIN: | |
13544412 | 1348 | goto out_eagain; |
d67ae825 TH |
1349 | } |
1350 | ||
1351 | return 0; | |
f0922a6c | 1352 | out_layouterror: |
166bd5b8 | 1353 | ff_layout_read_record_layoutstats_done(task, hdr); |
f0922a6c | 1354 | ff_layout_send_layouterror(hdr->lseg); |
166bd5b8 | 1355 | hdr->pgio_mirror_idx = new_idx; |
13544412 TM |
1356 | out_eagain: |
1357 | rpc_restart_call_prepare(task); | |
1358 | return -EAGAIN; | |
d67ae825 TH |
1359 | } |
1360 | ||
c0f5f505 TM |
1361 | static bool |
1362 | ff_layout_need_layoutcommit(struct pnfs_layout_segment *lseg) | |
1363 | { | |
1364 | return !(FF_LAYOUT_LSEG(lseg)->flags & FF_FLAGS_NO_LAYOUTCOMMIT); | |
1365 | } | |
1366 | ||
d67ae825 TH |
1367 | /* |
1368 | * We reference the rpc_cred of the first WRITE that triggers the need for | |
1369 | * a LAYOUTCOMMIT, and use it to send the layoutcommit compound. | |
1370 | * rfc5661 is not clear about which credential should be used. | |
1371 | * | |
1372 | * Flexlayout client should treat DS replied FILE_SYNC as DATA_SYNC, so | |
1373 | * to follow http://www.rfc-editor.org/errata_search.php?rfc=5661&eid=2751 | |
1374 | * we always send layoutcommit after DS writes. | |
1375 | */ | |
1376 | static void | |
bc28e1c2 TM |
1377 | ff_layout_set_layoutcommit(struct inode *inode, |
1378 | struct pnfs_layout_segment *lseg, | |
1379 | loff_t end_offset) | |
d67ae825 | 1380 | { |
bc28e1c2 | 1381 | if (!ff_layout_need_layoutcommit(lseg)) |
c0f5f505 TM |
1382 | return; |
1383 | ||
bc28e1c2 TM |
1384 | pnfs_set_layoutcommit(inode, lseg, end_offset); |
1385 | dprintk("%s inode %lu pls_end_pos %llu\n", __func__, inode->i_ino, | |
1386 | (unsigned long long) NFS_I(inode)->layout->plh_lwb); | |
d67ae825 TH |
1387 | } |
1388 | ||
37e9ed22 TM |
1389 | static void ff_layout_read_record_layoutstats_start(struct rpc_task *task, |
1390 | struct nfs_pgio_header *hdr) | |
d67ae825 | 1391 | { |
37e9ed22 TM |
1392 | if (test_and_set_bit(NFS_IOHDR_STAT, &hdr->flags)) |
1393 | return; | |
0b7baf94 | 1394 | nfs4_ff_layout_stat_io_start_read(hdr->inode, |
abcb7bfc | 1395 | FF_LAYOUT_COMP(hdr->lseg, hdr->pgio_mirror_idx), |
e76d28dd TM |
1396 | hdr->args.count, |
1397 | task->tk_start); | |
37e9ed22 TM |
1398 | } |
1399 | ||
1400 | static void ff_layout_read_record_layoutstats_done(struct rpc_task *task, | |
1401 | struct nfs_pgio_header *hdr) | |
1402 | { | |
1403 | if (!test_and_clear_bit(NFS_IOHDR_STAT, &hdr->flags)) | |
1404 | return; | |
1405 | nfs4_ff_layout_stat_io_end_read(task, | |
1406 | FF_LAYOUT_COMP(hdr->lseg, hdr->pgio_mirror_idx), | |
1407 | hdr->args.count, | |
1408 | hdr->res.count); | |
056f9ad6 | 1409 | set_bit(NFS_LSEG_LAYOUTRETURN, &hdr->lseg->pls_flags); |
37e9ed22 | 1410 | } |
abcb7bfc | 1411 | |
37e9ed22 TM |
1412 | static int ff_layout_read_prepare_common(struct rpc_task *task, |
1413 | struct nfs_pgio_header *hdr) | |
1414 | { | |
d67ae825 TH |
1415 | if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags))) { |
1416 | rpc_exit(task, -EIO); | |
1417 | return -EIO; | |
1418 | } | |
d67ae825 | 1419 | |
37e9ed22 | 1420 | ff_layout_read_record_layoutstats_start(task, hdr); |
d67ae825 TH |
1421 | return 0; |
1422 | } | |
1423 | ||
1424 | /* | |
1425 | * Call ops for the async read/write cases | |
1426 | * In the case of dense layouts, the offset needs to be reset to its | |
1427 | * original value. | |
1428 | */ | |
1429 | static void ff_layout_read_prepare_v3(struct rpc_task *task, void *data) | |
1430 | { | |
1431 | struct nfs_pgio_header *hdr = data; | |
1432 | ||
1433 | if (ff_layout_read_prepare_common(task, hdr)) | |
1434 | return; | |
1435 | ||
1436 | rpc_call_start(task); | |
1437 | } | |
1438 | ||
d67ae825 TH |
1439 | static void ff_layout_read_prepare_v4(struct rpc_task *task, void *data) |
1440 | { | |
1441 | struct nfs_pgio_header *hdr = data; | |
1442 | ||
6de7e12f AS |
1443 | if (nfs4_setup_sequence(hdr->ds_clp, |
1444 | &hdr->args.seq_args, | |
1445 | &hdr->res.seq_res, | |
1446 | task)) | |
d67ae825 TH |
1447 | return; |
1448 | ||
bb21ce0a | 1449 | ff_layout_read_prepare_common(task, hdr); |
d67ae825 TH |
1450 | } |
1451 | ||
1452 | static void ff_layout_read_call_done(struct rpc_task *task, void *data) | |
1453 | { | |
1454 | struct nfs_pgio_header *hdr = data; | |
1455 | ||
1456 | dprintk("--> %s task->tk_status %d\n", __func__, task->tk_status); | |
1457 | ||
1458 | if (test_bit(NFS_IOHDR_REDO, &hdr->flags) && | |
1459 | task->tk_status == 0) { | |
1460 | nfs4_sequence_done(task, &hdr->res.seq_res); | |
1461 | return; | |
1462 | } | |
1463 | ||
1464 | /* Note this may cause RPC to be resent */ | |
1465 | hdr->mds_ops->rpc_call_done(task, hdr); | |
1466 | } | |
1467 | ||
1468 | static void ff_layout_read_count_stats(struct rpc_task *task, void *data) | |
1469 | { | |
1470 | struct nfs_pgio_header *hdr = data; | |
1471 | ||
37e9ed22 | 1472 | ff_layout_read_record_layoutstats_done(task, hdr); |
d67ae825 TH |
1473 | rpc_count_iostats_metrics(task, |
1474 | &NFS_CLIENT(hdr->inode)->cl_metrics[NFSPROC4_CLNT_READ]); | |
1475 | } | |
1476 | ||
4d0ac221 TM |
1477 | static void ff_layout_read_release(void *data) |
1478 | { | |
1479 | struct nfs_pgio_header *hdr = data; | |
1480 | ||
1481 | ff_layout_read_record_layoutstats_done(&hdr->task, hdr); | |
f0922a6c TM |
1482 | if (test_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags)) { |
1483 | ff_layout_send_layouterror(hdr->lseg); | |
42f86b44 | 1484 | pnfs_read_resend_pnfs(hdr); |
f0922a6c | 1485 | } else if (test_bit(NFS_IOHDR_RESEND_MDS, &hdr->flags)) |
42f86b44 | 1486 | ff_layout_reset_read(hdr); |
4d0ac221 TM |
1487 | pnfs_generic_rw_release(data); |
1488 | } | |
1489 | ||
1490 | ||
d67ae825 TH |
1491 | static int ff_layout_write_done_cb(struct rpc_task *task, |
1492 | struct nfs_pgio_header *hdr) | |
1493 | { | |
2e18d4d8 | 1494 | loff_t end_offs = 0; |
d67ae825 TH |
1495 | int err; |
1496 | ||
1497 | trace_nfs4_pnfs_write(hdr, task->tk_status); | |
dd52128a | 1498 | if (task->tk_status < 0) |
d67ae825 TH |
1499 | ff_layout_io_track_ds_error(hdr->lseg, hdr->pgio_mirror_idx, |
1500 | hdr->args.offset, hdr->args.count, | |
dd52128a TM |
1501 | hdr->res.op_status, OP_WRITE, |
1502 | task->tk_status); | |
d67ae825 TH |
1503 | err = ff_layout_async_handle_error(task, hdr->args.context->state, |
1504 | hdr->ds_clp, hdr->lseg, | |
1505 | hdr->pgio_mirror_idx); | |
1506 | ||
7b0df92a TM |
1507 | clear_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags); |
1508 | clear_bit(NFS_IOHDR_RESEND_MDS, &hdr->flags); | |
d67ae825 TH |
1509 | switch (err) { |
1510 | case -NFS4ERR_RESET_TO_PNFS: | |
7b0df92a | 1511 | set_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags); |
7cc8c5cd | 1512 | return task->tk_status; |
d67ae825 | 1513 | case -NFS4ERR_RESET_TO_MDS: |
7b0df92a | 1514 | set_bit(NFS_IOHDR_RESEND_MDS, &hdr->flags); |
d67ae825 TH |
1515 | return task->tk_status; |
1516 | case -EAGAIN: | |
d67ae825 TH |
1517 | return -EAGAIN; |
1518 | } | |
1519 | ||
1520 | if (hdr->res.verf->committed == NFS_FILE_SYNC || | |
1521 | hdr->res.verf->committed == NFS_DATA_SYNC) | |
2e18d4d8 TM |
1522 | end_offs = hdr->mds_offset + (loff_t)hdr->res.count; |
1523 | ||
1524 | /* Note: if the write is unstable, don't set end_offs until commit */ | |
1525 | ff_layout_set_layoutcommit(hdr->inode, hdr->lseg, end_offs); | |
d67ae825 | 1526 | |
54204010 PT |
1527 | /* zero out fattr since we don't care DS attr at all */ |
1528 | hdr->fattr.valid = 0; | |
69f230d9 PT |
1529 | if (task->tk_status >= 0) |
1530 | nfs_writeback_update_inode(hdr); | |
1531 | ||
d67ae825 TH |
1532 | return 0; |
1533 | } | |
1534 | ||
1535 | static int ff_layout_commit_done_cb(struct rpc_task *task, | |
1536 | struct nfs_commit_data *data) | |
1537 | { | |
d67ae825 TH |
1538 | int err; |
1539 | ||
1540 | trace_nfs4_pnfs_commit_ds(data, task->tk_status); | |
dd52128a | 1541 | if (task->tk_status < 0) |
d67ae825 TH |
1542 | ff_layout_io_track_ds_error(data->lseg, data->ds_commit_index, |
1543 | data->args.offset, data->args.count, | |
dd52128a TM |
1544 | data->res.op_status, OP_COMMIT, |
1545 | task->tk_status); | |
d67ae825 TH |
1546 | err = ff_layout_async_handle_error(task, NULL, data->ds_clp, |
1547 | data->lseg, data->ds_commit_index); | |
1548 | ||
1549 | switch (err) { | |
1550 | case -NFS4ERR_RESET_TO_PNFS: | |
7cc8c5cd TM |
1551 | pnfs_generic_prepare_to_resend_writes(data); |
1552 | return -EAGAIN; | |
d67ae825 | 1553 | case -NFS4ERR_RESET_TO_MDS: |
d67ae825 TH |
1554 | pnfs_generic_prepare_to_resend_writes(data); |
1555 | return -EAGAIN; | |
1556 | case -EAGAIN: | |
1557 | rpc_restart_call_prepare(task); | |
1558 | return -EAGAIN; | |
1559 | } | |
1560 | ||
bc28e1c2 | 1561 | ff_layout_set_layoutcommit(data->inode, data->lseg, data->lwb); |
d67ae825 TH |
1562 | |
1563 | return 0; | |
1564 | } | |
1565 | ||
37e9ed22 TM |
1566 | static void ff_layout_write_record_layoutstats_start(struct rpc_task *task, |
1567 | struct nfs_pgio_header *hdr) | |
d67ae825 | 1568 | { |
37e9ed22 TM |
1569 | if (test_and_set_bit(NFS_IOHDR_STAT, &hdr->flags)) |
1570 | return; | |
0b7baf94 | 1571 | nfs4_ff_layout_stat_io_start_write(hdr->inode, |
abcb7bfc | 1572 | FF_LAYOUT_COMP(hdr->lseg, hdr->pgio_mirror_idx), |
e76d28dd TM |
1573 | hdr->args.count, |
1574 | task->tk_start); | |
37e9ed22 TM |
1575 | } |
1576 | ||
1577 | static void ff_layout_write_record_layoutstats_done(struct rpc_task *task, | |
1578 | struct nfs_pgio_header *hdr) | |
1579 | { | |
1580 | if (!test_and_clear_bit(NFS_IOHDR_STAT, &hdr->flags)) | |
1581 | return; | |
1582 | nfs4_ff_layout_stat_io_end_write(task, | |
1583 | FF_LAYOUT_COMP(hdr->lseg, hdr->pgio_mirror_idx), | |
1584 | hdr->args.count, hdr->res.count, | |
1585 | hdr->res.verf->committed); | |
056f9ad6 | 1586 | set_bit(NFS_LSEG_LAYOUTRETURN, &hdr->lseg->pls_flags); |
37e9ed22 | 1587 | } |
abcb7bfc | 1588 | |
37e9ed22 TM |
1589 | static int ff_layout_write_prepare_common(struct rpc_task *task, |
1590 | struct nfs_pgio_header *hdr) | |
1591 | { | |
d67ae825 TH |
1592 | if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags))) { |
1593 | rpc_exit(task, -EIO); | |
1594 | return -EIO; | |
1595 | } | |
1596 | ||
37e9ed22 | 1597 | ff_layout_write_record_layoutstats_start(task, hdr); |
d67ae825 TH |
1598 | return 0; |
1599 | } | |
1600 | ||
1601 | static void ff_layout_write_prepare_v3(struct rpc_task *task, void *data) | |
1602 | { | |
1603 | struct nfs_pgio_header *hdr = data; | |
1604 | ||
1605 | if (ff_layout_write_prepare_common(task, hdr)) | |
1606 | return; | |
1607 | ||
1608 | rpc_call_start(task); | |
1609 | } | |
1610 | ||
1611 | static void ff_layout_write_prepare_v4(struct rpc_task *task, void *data) | |
1612 | { | |
1613 | struct nfs_pgio_header *hdr = data; | |
1614 | ||
6de7e12f AS |
1615 | if (nfs4_setup_sequence(hdr->ds_clp, |
1616 | &hdr->args.seq_args, | |
1617 | &hdr->res.seq_res, | |
1618 | task)) | |
d67ae825 TH |
1619 | return; |
1620 | ||
bb21ce0a | 1621 | ff_layout_write_prepare_common(task, hdr); |
d67ae825 TH |
1622 | } |
1623 | ||
1624 | static void ff_layout_write_call_done(struct rpc_task *task, void *data) | |
1625 | { | |
1626 | struct nfs_pgio_header *hdr = data; | |
1627 | ||
1628 | if (test_bit(NFS_IOHDR_REDO, &hdr->flags) && | |
1629 | task->tk_status == 0) { | |
1630 | nfs4_sequence_done(task, &hdr->res.seq_res); | |
1631 | return; | |
1632 | } | |
1633 | ||
1634 | /* Note this may cause RPC to be resent */ | |
1635 | hdr->mds_ops->rpc_call_done(task, hdr); | |
1636 | } | |
1637 | ||
1638 | static void ff_layout_write_count_stats(struct rpc_task *task, void *data) | |
1639 | { | |
1640 | struct nfs_pgio_header *hdr = data; | |
1641 | ||
37e9ed22 | 1642 | ff_layout_write_record_layoutstats_done(task, hdr); |
d67ae825 TH |
1643 | rpc_count_iostats_metrics(task, |
1644 | &NFS_CLIENT(hdr->inode)->cl_metrics[NFSPROC4_CLNT_WRITE]); | |
1645 | } | |
1646 | ||
4d0ac221 TM |
1647 | static void ff_layout_write_release(void *data) |
1648 | { | |
1649 | struct nfs_pgio_header *hdr = data; | |
1650 | ||
1651 | ff_layout_write_record_layoutstats_done(&hdr->task, hdr); | |
f0922a6c TM |
1652 | if (test_bit(NFS_IOHDR_RESEND_PNFS, &hdr->flags)) { |
1653 | ff_layout_send_layouterror(hdr->lseg); | |
7b0df92a | 1654 | ff_layout_reset_write(hdr, true); |
f0922a6c | 1655 | } else if (test_bit(NFS_IOHDR_RESEND_MDS, &hdr->flags)) |
7b0df92a | 1656 | ff_layout_reset_write(hdr, false); |
4d0ac221 TM |
1657 | pnfs_generic_rw_release(data); |
1658 | } | |
1659 | ||
37e9ed22 | 1660 | static void ff_layout_commit_record_layoutstats_start(struct rpc_task *task, |
abcb7bfc TM |
1661 | struct nfs_commit_data *cdata) |
1662 | { | |
37e9ed22 TM |
1663 | if (test_and_set_bit(NFS_IOHDR_STAT, &cdata->flags)) |
1664 | return; | |
0b7baf94 | 1665 | nfs4_ff_layout_stat_io_start_write(cdata->inode, |
abcb7bfc | 1666 | FF_LAYOUT_COMP(cdata->lseg, cdata->ds_commit_index), |
e76d28dd | 1667 | 0, task->tk_start); |
abcb7bfc TM |
1668 | } |
1669 | ||
37e9ed22 TM |
1670 | static void ff_layout_commit_record_layoutstats_done(struct rpc_task *task, |
1671 | struct nfs_commit_data *cdata) | |
1672 | { | |
1673 | struct nfs_page *req; | |
1674 | __u64 count = 0; | |
1675 | ||
1676 | if (!test_and_clear_bit(NFS_IOHDR_STAT, &cdata->flags)) | |
1677 | return; | |
1678 | ||
1679 | if (task->tk_status == 0) { | |
1680 | list_for_each_entry(req, &cdata->pages, wb_list) | |
1681 | count += req->wb_bytes; | |
1682 | } | |
1683 | nfs4_ff_layout_stat_io_end_write(task, | |
1684 | FF_LAYOUT_COMP(cdata->lseg, cdata->ds_commit_index), | |
1685 | count, count, NFS_FILE_SYNC); | |
056f9ad6 | 1686 | set_bit(NFS_LSEG_LAYOUTRETURN, &cdata->lseg->pls_flags); |
37e9ed22 TM |
1687 | } |
1688 | ||
1689 | static void ff_layout_commit_prepare_common(struct rpc_task *task, | |
1690 | struct nfs_commit_data *cdata) | |
1691 | { | |
1692 | ff_layout_commit_record_layoutstats_start(task, cdata); | |
1693 | } | |
1694 | ||
d67ae825 TH |
1695 | static void ff_layout_commit_prepare_v3(struct rpc_task *task, void *data) |
1696 | { | |
abcb7bfc | 1697 | ff_layout_commit_prepare_common(task, data); |
d67ae825 TH |
1698 | rpc_call_start(task); |
1699 | } | |
1700 | ||
1701 | static void ff_layout_commit_prepare_v4(struct rpc_task *task, void *data) | |
1702 | { | |
1703 | struct nfs_commit_data *wdata = data; | |
1704 | ||
6de7e12f AS |
1705 | if (nfs4_setup_sequence(wdata->ds_clp, |
1706 | &wdata->args.seq_args, | |
1707 | &wdata->res.seq_res, | |
1708 | task)) | |
abcb7bfc TM |
1709 | return; |
1710 | ff_layout_commit_prepare_common(task, data); | |
1711 | } | |
1712 | ||
1713 | static void ff_layout_commit_done(struct rpc_task *task, void *data) | |
141b9b59 PT |
1714 | { |
1715 | pnfs_generic_write_commit_done(task, data); | |
1716 | } | |
1717 | ||
1718 | static void ff_layout_commit_count_stats(struct rpc_task *task, void *data) | |
abcb7bfc TM |
1719 | { |
1720 | struct nfs_commit_data *cdata = data; | |
abcb7bfc | 1721 | |
37e9ed22 | 1722 | ff_layout_commit_record_layoutstats_done(task, cdata); |
d67ae825 TH |
1723 | rpc_count_iostats_metrics(task, |
1724 | &NFS_CLIENT(cdata->inode)->cl_metrics[NFSPROC4_CLNT_COMMIT]); | |
1725 | } | |
1726 | ||
4d0ac221 TM |
1727 | static void ff_layout_commit_release(void *data) |
1728 | { | |
1729 | struct nfs_commit_data *cdata = data; | |
1730 | ||
1731 | ff_layout_commit_record_layoutstats_done(&cdata->task, cdata); | |
1732 | pnfs_generic_commit_release(data); | |
1733 | } | |
1734 | ||
d67ae825 TH |
1735 | static const struct rpc_call_ops ff_layout_read_call_ops_v3 = { |
1736 | .rpc_call_prepare = ff_layout_read_prepare_v3, | |
1737 | .rpc_call_done = ff_layout_read_call_done, | |
1738 | .rpc_count_stats = ff_layout_read_count_stats, | |
4d0ac221 | 1739 | .rpc_release = ff_layout_read_release, |
d67ae825 TH |
1740 | }; |
1741 | ||
1742 | static const struct rpc_call_ops ff_layout_read_call_ops_v4 = { | |
1743 | .rpc_call_prepare = ff_layout_read_prepare_v4, | |
1744 | .rpc_call_done = ff_layout_read_call_done, | |
1745 | .rpc_count_stats = ff_layout_read_count_stats, | |
4d0ac221 | 1746 | .rpc_release = ff_layout_read_release, |
d67ae825 TH |
1747 | }; |
1748 | ||
1749 | static const struct rpc_call_ops ff_layout_write_call_ops_v3 = { | |
1750 | .rpc_call_prepare = ff_layout_write_prepare_v3, | |
1751 | .rpc_call_done = ff_layout_write_call_done, | |
1752 | .rpc_count_stats = ff_layout_write_count_stats, | |
4d0ac221 | 1753 | .rpc_release = ff_layout_write_release, |
d67ae825 TH |
1754 | }; |
1755 | ||
1756 | static const struct rpc_call_ops ff_layout_write_call_ops_v4 = { | |
1757 | .rpc_call_prepare = ff_layout_write_prepare_v4, | |
1758 | .rpc_call_done = ff_layout_write_call_done, | |
1759 | .rpc_count_stats = ff_layout_write_count_stats, | |
4d0ac221 | 1760 | .rpc_release = ff_layout_write_release, |
d67ae825 TH |
1761 | }; |
1762 | ||
1763 | static const struct rpc_call_ops ff_layout_commit_call_ops_v3 = { | |
1764 | .rpc_call_prepare = ff_layout_commit_prepare_v3, | |
abcb7bfc | 1765 | .rpc_call_done = ff_layout_commit_done, |
d67ae825 | 1766 | .rpc_count_stats = ff_layout_commit_count_stats, |
4d0ac221 | 1767 | .rpc_release = ff_layout_commit_release, |
d67ae825 TH |
1768 | }; |
1769 | ||
1770 | static const struct rpc_call_ops ff_layout_commit_call_ops_v4 = { | |
1771 | .rpc_call_prepare = ff_layout_commit_prepare_v4, | |
abcb7bfc | 1772 | .rpc_call_done = ff_layout_commit_done, |
d67ae825 | 1773 | .rpc_count_stats = ff_layout_commit_count_stats, |
4d0ac221 | 1774 | .rpc_release = ff_layout_commit_release, |
d67ae825 TH |
1775 | }; |
1776 | ||
1777 | static enum pnfs_try_status | |
1778 | ff_layout_read_pagelist(struct nfs_pgio_header *hdr) | |
1779 | { | |
1780 | struct pnfs_layout_segment *lseg = hdr->lseg; | |
1781 | struct nfs4_pnfs_ds *ds; | |
1782 | struct rpc_clnt *ds_clnt; | |
2444ff27 | 1783 | struct nfs4_ff_layout_mirror *mirror; |
a52458b4 | 1784 | const struct cred *ds_cred; |
d67ae825 TH |
1785 | loff_t offset = hdr->args.offset; |
1786 | u32 idx = hdr->pgio_mirror_idx; | |
1787 | int vers; | |
1788 | struct nfs_fh *fh; | |
1789 | ||
5b5e0928 | 1790 | dprintk("--> %s ino %lu pgbase %u req %zu@%llu\n", |
d67ae825 TH |
1791 | __func__, hdr->inode->i_ino, |
1792 | hdr->args.pgbase, (size_t)hdr->args.count, offset); | |
1793 | ||
2444ff27 TM |
1794 | mirror = FF_LAYOUT_COMP(lseg, idx); |
1795 | ds = nfs4_ff_layout_prepare_ds(lseg, mirror, false); | |
d67ae825 TH |
1796 | if (!ds) |
1797 | goto out_failed; | |
1798 | ||
561d6f8a | 1799 | ds_clnt = nfs4_ff_find_or_create_ds_client(mirror, ds->ds_clp, |
d67ae825 TH |
1800 | hdr->inode); |
1801 | if (IS_ERR(ds_clnt)) | |
1802 | goto out_failed; | |
1803 | ||
312cd4cb | 1804 | ds_cred = ff_layout_get_ds_cred(mirror, &lseg->pls_range, hdr->cred); |
57f3f4c0 | 1805 | if (!ds_cred) |
d67ae825 TH |
1806 | goto out_failed; |
1807 | ||
626d48b1 | 1808 | vers = nfs4_ff_layout_ds_version(mirror); |
d67ae825 TH |
1809 | |
1810 | dprintk("%s USE DS: %s cl_count %d vers %d\n", __func__, | |
212bf41d | 1811 | ds->ds_remotestr, refcount_read(&ds->ds_clp->cl_count), vers); |
d67ae825 | 1812 | |
75bf47eb | 1813 | hdr->pgio_done_cb = ff_layout_read_done_cb; |
212bf41d | 1814 | refcount_inc(&ds->ds_clp->cl_count); |
d67ae825 | 1815 | hdr->ds_clp = ds->ds_clp; |
749da527 | 1816 | fh = nfs4_ff_layout_select_ds_fh(mirror); |
d67ae825 TH |
1817 | if (fh) |
1818 | hdr->args.fh = fh; | |
bb21ce0a | 1819 | |
4cbc8a57 | 1820 | nfs4_ff_layout_select_ds_stateid(mirror, &hdr->args.stateid); |
bb21ce0a | 1821 | |
d67ae825 TH |
1822 | /* |
1823 | * Note that if we ever decide to split across DSes, | |
1824 | * then we may need to handle dense-like offsets. | |
1825 | */ | |
1826 | hdr->args.offset = offset; | |
1827 | hdr->mds_offset = offset; | |
1828 | ||
1829 | /* Perform an asynchronous read to ds */ | |
1830 | nfs_initiate_pgio(ds_clnt, hdr, ds_cred, ds->ds_clp->rpc_ops, | |
1831 | vers == 3 ? &ff_layout_read_call_ops_v3 : | |
1832 | &ff_layout_read_call_ops_v4, | |
1833 | 0, RPC_TASK_SOFTCONN); | |
a52458b4 | 1834 | put_cred(ds_cred); |
d67ae825 TH |
1835 | return PNFS_ATTEMPTED; |
1836 | ||
1837 | out_failed: | |
3b13b4b3 | 1838 | if (ff_layout_avoid_mds_available_ds(lseg)) |
d67ae825 | 1839 | return PNFS_TRY_AGAIN; |
d5b9216f TM |
1840 | trace_pnfs_mds_fallback_read_pagelist(hdr->inode, |
1841 | hdr->args.offset, hdr->args.count, | |
1842 | IOMODE_READ, NFS_I(hdr->inode)->layout, lseg); | |
d67ae825 TH |
1843 | return PNFS_NOT_ATTEMPTED; |
1844 | } | |
1845 | ||
1846 | /* Perform async writes. */ | |
1847 | static enum pnfs_try_status | |
1848 | ff_layout_write_pagelist(struct nfs_pgio_header *hdr, int sync) | |
1849 | { | |
1850 | struct pnfs_layout_segment *lseg = hdr->lseg; | |
1851 | struct nfs4_pnfs_ds *ds; | |
1852 | struct rpc_clnt *ds_clnt; | |
2444ff27 | 1853 | struct nfs4_ff_layout_mirror *mirror; |
a52458b4 | 1854 | const struct cred *ds_cred; |
d67ae825 TH |
1855 | loff_t offset = hdr->args.offset; |
1856 | int vers; | |
1857 | struct nfs_fh *fh; | |
1858 | int idx = hdr->pgio_mirror_idx; | |
1859 | ||
2444ff27 TM |
1860 | mirror = FF_LAYOUT_COMP(lseg, idx); |
1861 | ds = nfs4_ff_layout_prepare_ds(lseg, mirror, true); | |
d67ae825 | 1862 | if (!ds) |
37f8aa16 | 1863 | goto out_failed; |
d67ae825 | 1864 | |
561d6f8a | 1865 | ds_clnt = nfs4_ff_find_or_create_ds_client(mirror, ds->ds_clp, |
d67ae825 TH |
1866 | hdr->inode); |
1867 | if (IS_ERR(ds_clnt)) | |
37f8aa16 | 1868 | goto out_failed; |
d67ae825 | 1869 | |
312cd4cb | 1870 | ds_cred = ff_layout_get_ds_cred(mirror, &lseg->pls_range, hdr->cred); |
57f3f4c0 | 1871 | if (!ds_cred) |
37f8aa16 | 1872 | goto out_failed; |
d67ae825 | 1873 | |
626d48b1 | 1874 | vers = nfs4_ff_layout_ds_version(mirror); |
d67ae825 | 1875 | |
5b5e0928 | 1876 | dprintk("%s ino %lu sync %d req %zu@%llu DS: %s cl_count %d vers %d\n", |
d67ae825 | 1877 | __func__, hdr->inode->i_ino, sync, (size_t) hdr->args.count, |
212bf41d | 1878 | offset, ds->ds_remotestr, refcount_read(&ds->ds_clp->cl_count), |
d67ae825 TH |
1879 | vers); |
1880 | ||
1881 | hdr->pgio_done_cb = ff_layout_write_done_cb; | |
212bf41d | 1882 | refcount_inc(&ds->ds_clp->cl_count); |
d67ae825 TH |
1883 | hdr->ds_clp = ds->ds_clp; |
1884 | hdr->ds_commit_idx = idx; | |
749da527 | 1885 | fh = nfs4_ff_layout_select_ds_fh(mirror); |
d67ae825 TH |
1886 | if (fh) |
1887 | hdr->args.fh = fh; | |
1888 | ||
4cbc8a57 | 1889 | nfs4_ff_layout_select_ds_stateid(mirror, &hdr->args.stateid); |
bb21ce0a | 1890 | |
d67ae825 TH |
1891 | /* |
1892 | * Note that if we ever decide to split across DSes, | |
1893 | * then we may need to handle dense-like offsets. | |
1894 | */ | |
1895 | hdr->args.offset = offset; | |
1896 | ||
1897 | /* Perform an asynchronous write */ | |
1898 | nfs_initiate_pgio(ds_clnt, hdr, ds_cred, ds->ds_clp->rpc_ops, | |
1899 | vers == 3 ? &ff_layout_write_call_ops_v3 : | |
1900 | &ff_layout_write_call_ops_v4, | |
1901 | sync, RPC_TASK_SOFTCONN); | |
a52458b4 | 1902 | put_cred(ds_cred); |
d67ae825 | 1903 | return PNFS_ATTEMPTED; |
37f8aa16 TM |
1904 | |
1905 | out_failed: | |
1906 | if (ff_layout_avoid_mds_available_ds(lseg)) | |
1907 | return PNFS_TRY_AGAIN; | |
d5b9216f TM |
1908 | trace_pnfs_mds_fallback_write_pagelist(hdr->inode, |
1909 | hdr->args.offset, hdr->args.count, | |
1910 | IOMODE_RW, NFS_I(hdr->inode)->layout, lseg); | |
37f8aa16 | 1911 | return PNFS_NOT_ATTEMPTED; |
d67ae825 TH |
1912 | } |
1913 | ||
d67ae825 TH |
1914 | static u32 calc_ds_index_from_commit(struct pnfs_layout_segment *lseg, u32 i) |
1915 | { | |
1916 | return i; | |
1917 | } | |
1918 | ||
1919 | static struct nfs_fh * | |
1920 | select_ds_fh_from_commit(struct pnfs_layout_segment *lseg, u32 i) | |
1921 | { | |
1922 | struct nfs4_ff_layout_segment *flseg = FF_LAYOUT_LSEG(lseg); | |
1923 | ||
1924 | /* FIXME: Assume that there is only one NFS version available | |
1925 | * for the DS. | |
1926 | */ | |
1927 | return &flseg->mirror_array[i]->fh_versions[0]; | |
1928 | } | |
1929 | ||
1930 | static int ff_layout_initiate_commit(struct nfs_commit_data *data, int how) | |
1931 | { | |
1932 | struct pnfs_layout_segment *lseg = data->lseg; | |
1933 | struct nfs4_pnfs_ds *ds; | |
1934 | struct rpc_clnt *ds_clnt; | |
2444ff27 | 1935 | struct nfs4_ff_layout_mirror *mirror; |
a52458b4 | 1936 | const struct cred *ds_cred; |
d67ae825 | 1937 | u32 idx; |
57f3f4c0 | 1938 | int vers, ret; |
d67ae825 TH |
1939 | struct nfs_fh *fh; |
1940 | ||
4b75053e TM |
1941 | if (!lseg || !(pnfs_is_valid_lseg(lseg) || |
1942 | test_bit(NFS_LSEG_LAYOUTRETURN, &lseg->pls_flags))) | |
1943 | goto out_err; | |
1944 | ||
d67ae825 | 1945 | idx = calc_ds_index_from_commit(lseg, data->ds_commit_index); |
2444ff27 TM |
1946 | mirror = FF_LAYOUT_COMP(lseg, idx); |
1947 | ds = nfs4_ff_layout_prepare_ds(lseg, mirror, true); | |
d67ae825 TH |
1948 | if (!ds) |
1949 | goto out_err; | |
1950 | ||
561d6f8a | 1951 | ds_clnt = nfs4_ff_find_or_create_ds_client(mirror, ds->ds_clp, |
d67ae825 TH |
1952 | data->inode); |
1953 | if (IS_ERR(ds_clnt)) | |
1954 | goto out_err; | |
1955 | ||
312cd4cb | 1956 | ds_cred = ff_layout_get_ds_cred(mirror, &lseg->pls_range, data->cred); |
57f3f4c0 | 1957 | if (!ds_cred) |
d67ae825 TH |
1958 | goto out_err; |
1959 | ||
626d48b1 | 1960 | vers = nfs4_ff_layout_ds_version(mirror); |
d67ae825 TH |
1961 | |
1962 | dprintk("%s ino %lu, how %d cl_count %d vers %d\n", __func__, | |
212bf41d | 1963 | data->inode->i_ino, how, refcount_read(&ds->ds_clp->cl_count), |
d67ae825 TH |
1964 | vers); |
1965 | data->commit_done_cb = ff_layout_commit_done_cb; | |
1966 | data->cred = ds_cred; | |
212bf41d | 1967 | refcount_inc(&ds->ds_clp->cl_count); |
d67ae825 TH |
1968 | data->ds_clp = ds->ds_clp; |
1969 | fh = select_ds_fh_from_commit(lseg, data->ds_commit_index); | |
1970 | if (fh) | |
1971 | data->args.fh = fh; | |
abcb7bfc | 1972 | |
57f3f4c0 | 1973 | ret = nfs_initiate_commit(ds_clnt, data, ds->ds_clp->rpc_ops, |
d67ae825 TH |
1974 | vers == 3 ? &ff_layout_commit_call_ops_v3 : |
1975 | &ff_layout_commit_call_ops_v4, | |
1976 | how, RPC_TASK_SOFTCONN); | |
a52458b4 | 1977 | put_cred(ds_cred); |
57f3f4c0 | 1978 | return ret; |
d67ae825 TH |
1979 | out_err: |
1980 | pnfs_generic_prepare_to_resend_writes(data); | |
1981 | pnfs_generic_commit_release(data); | |
1982 | return -EAGAIN; | |
1983 | } | |
1984 | ||
1985 | static int | |
1986 | ff_layout_commit_pagelist(struct inode *inode, struct list_head *mds_pages, | |
1987 | int how, struct nfs_commit_info *cinfo) | |
1988 | { | |
1989 | return pnfs_generic_commit_pagelist(inode, mds_pages, how, cinfo, | |
1990 | ff_layout_initiate_commit); | |
1991 | } | |
1992 | ||
1993 | static struct pnfs_ds_commit_info * | |
1994 | ff_layout_get_ds_info(struct inode *inode) | |
1995 | { | |
1996 | struct pnfs_layout_hdr *layout = NFS_I(inode)->layout; | |
1997 | ||
1998 | if (layout == NULL) | |
1999 | return NULL; | |
2000 | ||
2001 | return &FF_LAYOUT_FROM_HDR(layout)->commit_info; | |
2002 | } | |
2003 | ||
2004 | static void | |
fc87701b | 2005 | ff_layout_free_deviceid_node(struct nfs4_deviceid_node *d) |
d67ae825 TH |
2006 | { |
2007 | nfs4_ff_layout_free_deviceid(container_of(d, struct nfs4_ff_layout_ds, | |
2008 | id_node)); | |
2009 | } | |
2010 | ||
5ba6a09e | 2011 | static int ff_layout_encode_ioerr(struct xdr_stream *xdr, |
5b9b3c85 TM |
2012 | const struct nfs4_layoutreturn_args *args, |
2013 | const struct nfs4_flexfile_layoutreturn_args *ff_args) | |
d67ae825 | 2014 | { |
d67ae825 | 2015 | __be32 *start; |
d67ae825 TH |
2016 | |
2017 | start = xdr_reserve_space(xdr, 4); | |
2018 | if (unlikely(!start)) | |
2019 | return -E2BIG; | |
2020 | ||
5b9b3c85 | 2021 | *start = cpu_to_be32(ff_args->num_errors); |
d67ae825 | 2022 | /* This assume we always return _ALL_ layouts */ |
5b9b3c85 | 2023 | return ff_layout_encode_ds_ioerr(xdr, &ff_args->errors); |
d67ae825 TH |
2024 | } |
2025 | ||
230bc962 TM |
2026 | static void |
2027 | encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len) | |
2028 | { | |
ab6e9aaf | 2029 | WARN_ON_ONCE(xdr_stream_encode_opaque_fixed(xdr, buf, len) < 0); |
230bc962 TM |
2030 | } |
2031 | ||
2032 | static void | |
2033 | ff_layout_encode_ff_iostat_head(struct xdr_stream *xdr, | |
2034 | const nfs4_stateid *stateid, | |
2035 | const struct nfs42_layoutstat_devinfo *devinfo) | |
2036 | { | |
2037 | __be32 *p; | |
2038 | ||
2039 | p = xdr_reserve_space(xdr, 8 + 8); | |
2040 | p = xdr_encode_hyper(p, devinfo->offset); | |
2041 | p = xdr_encode_hyper(p, devinfo->length); | |
2042 | encode_opaque_fixed(xdr, stateid->data, NFS4_STATEID_SIZE); | |
2043 | p = xdr_reserve_space(xdr, 4*8); | |
2044 | p = xdr_encode_hyper(p, devinfo->read_count); | |
2045 | p = xdr_encode_hyper(p, devinfo->read_bytes); | |
2046 | p = xdr_encode_hyper(p, devinfo->write_count); | |
2047 | p = xdr_encode_hyper(p, devinfo->write_bytes); | |
2048 | encode_opaque_fixed(xdr, devinfo->dev_id.data, NFS4_DEVICEID4_SIZE); | |
2049 | } | |
2050 | ||
2051 | static void | |
2052 | ff_layout_encode_ff_iostat(struct xdr_stream *xdr, | |
2053 | const nfs4_stateid *stateid, | |
2054 | const struct nfs42_layoutstat_devinfo *devinfo) | |
2055 | { | |
2056 | ff_layout_encode_ff_iostat_head(xdr, stateid, devinfo); | |
2057 | ff_layout_encode_ff_layoutupdate(xdr, devinfo, | |
2058 | devinfo->ld_private.data); | |
2059 | } | |
2060 | ||
d67ae825 | 2061 | /* report nothing for now */ |
230bc962 TM |
2062 | static void ff_layout_encode_iostats_array(struct xdr_stream *xdr, |
2063 | const struct nfs4_layoutreturn_args *args, | |
2064 | struct nfs4_flexfile_layoutreturn_args *ff_args) | |
d67ae825 TH |
2065 | { |
2066 | __be32 *p; | |
230bc962 | 2067 | int i; |
d67ae825 TH |
2068 | |
2069 | p = xdr_reserve_space(xdr, 4); | |
230bc962 TM |
2070 | *p = cpu_to_be32(ff_args->num_dev); |
2071 | for (i = 0; i < ff_args->num_dev; i++) | |
2072 | ff_layout_encode_ff_iostat(xdr, | |
2073 | &args->layout->plh_stateid, | |
2074 | &ff_args->devinfo[i]); | |
2075 | } | |
2076 | ||
2077 | static void | |
2078 | ff_layout_free_iostats_array(struct nfs42_layoutstat_devinfo *devinfo, | |
2079 | unsigned int num_entries) | |
2080 | { | |
2081 | unsigned int i; | |
2082 | ||
2083 | for (i = 0; i < num_entries; i++) { | |
2084 | if (!devinfo[i].ld_private.ops) | |
2085 | continue; | |
2086 | if (!devinfo[i].ld_private.ops->free) | |
2087 | continue; | |
2088 | devinfo[i].ld_private.ops->free(&devinfo[i].ld_private); | |
2089 | } | |
d67ae825 TH |
2090 | } |
2091 | ||
2092 | static struct nfs4_deviceid_node * | |
2093 | ff_layout_alloc_deviceid_node(struct nfs_server *server, | |
2094 | struct pnfs_device *pdev, gfp_t gfp_flags) | |
2095 | { | |
2096 | struct nfs4_ff_layout_ds *dsaddr; | |
2097 | ||
2098 | dsaddr = nfs4_ff_alloc_deviceid_node(server, pdev, gfp_flags); | |
2099 | if (!dsaddr) | |
2100 | return NULL; | |
2101 | return &dsaddr->id_node; | |
2102 | } | |
2103 | ||
2104 | static void | |
94e5c571 | 2105 | ff_layout_encode_layoutreturn(struct xdr_stream *xdr, |
5b9b3c85 TM |
2106 | const void *voidargs, |
2107 | const struct nfs4_xdr_opaque_data *ff_opaque) | |
d67ae825 | 2108 | { |
5b9b3c85 | 2109 | const struct nfs4_layoutreturn_args *args = voidargs; |
5ba6a09e | 2110 | struct nfs4_flexfile_layoutreturn_args *ff_args = ff_opaque->data; |
d9152114 TM |
2111 | struct xdr_buf tmp_buf = { |
2112 | .head = { | |
2113 | [0] = { | |
2114 | .iov_base = page_address(ff_args->pages[0]), | |
2115 | }, | |
2116 | }, | |
2117 | .buflen = PAGE_SIZE, | |
2118 | }; | |
2119 | struct xdr_stream tmp_xdr; | |
d67ae825 TH |
2120 | __be32 *start; |
2121 | ||
2122 | dprintk("%s: Begin\n", __func__); | |
d67ae825 | 2123 | |
0ccc61b1 | 2124 | xdr_init_encode(&tmp_xdr, &tmp_buf, NULL, NULL); |
d9152114 TM |
2125 | |
2126 | ff_layout_encode_ioerr(&tmp_xdr, args, ff_args); | |
2127 | ff_layout_encode_iostats_array(&tmp_xdr, args, ff_args); | |
2128 | ||
2129 | start = xdr_reserve_space(xdr, 4); | |
2130 | *start = cpu_to_be32(tmp_buf.len); | |
2131 | xdr_write_pages(xdr, ff_args->pages, 0, tmp_buf.len); | |
082fa37d | 2132 | |
d67ae825 TH |
2133 | dprintk("%s: Return\n", __func__); |
2134 | } | |
2135 | ||
5b9b3c85 TM |
2136 | static void |
2137 | ff_layout_free_layoutreturn(struct nfs4_xdr_opaque_data *args) | |
2138 | { | |
2139 | struct nfs4_flexfile_layoutreturn_args *ff_args; | |
2140 | ||
2141 | if (!args->data) | |
2142 | return; | |
2143 | ff_args = args->data; | |
2144 | args->data = NULL; | |
2145 | ||
2146 | ff_layout_free_ds_ioerr(&ff_args->errors); | |
230bc962 | 2147 | ff_layout_free_iostats_array(ff_args->devinfo, ff_args->num_dev); |
5b9b3c85 | 2148 | |
d9152114 | 2149 | put_page(ff_args->pages[0]); |
5b9b3c85 TM |
2150 | kfree(ff_args); |
2151 | } | |
2152 | ||
2e54b9b1 | 2153 | static const struct nfs4_xdr_opaque_ops layoutreturn_ops = { |
5b9b3c85 TM |
2154 | .encode = ff_layout_encode_layoutreturn, |
2155 | .free = ff_layout_free_layoutreturn, | |
2156 | }; | |
2157 | ||
2158 | static int | |
2159 | ff_layout_prepare_layoutreturn(struct nfs4_layoutreturn_args *args) | |
2160 | { | |
2161 | struct nfs4_flexfile_layoutreturn_args *ff_args; | |
230bc962 | 2162 | struct nfs4_flexfile_layout *ff_layout = FF_LAYOUT_FROM_HDR(args->layout); |
5b9b3c85 TM |
2163 | |
2164 | ff_args = kmalloc(sizeof(*ff_args), GFP_KERNEL); | |
2165 | if (!ff_args) | |
d9152114 TM |
2166 | goto out_nomem; |
2167 | ff_args->pages[0] = alloc_page(GFP_KERNEL); | |
2168 | if (!ff_args->pages[0]) | |
2169 | goto out_nomem_free; | |
5b9b3c85 TM |
2170 | |
2171 | INIT_LIST_HEAD(&ff_args->errors); | |
2172 | ff_args->num_errors = ff_layout_fetch_ds_ioerr(args->layout, | |
2173 | &args->range, &ff_args->errors, | |
2174 | FF_LAYOUTRETURN_MAXERR); | |
2175 | ||
230bc962 TM |
2176 | spin_lock(&args->inode->i_lock); |
2177 | ff_args->num_dev = ff_layout_mirror_prepare_stats(&ff_layout->generic_hdr, | |
2178 | &ff_args->devinfo[0], ARRAY_SIZE(ff_args->devinfo)); | |
2179 | spin_unlock(&args->inode->i_lock); | |
2180 | ||
5b9b3c85 TM |
2181 | args->ld_private->ops = &layoutreturn_ops; |
2182 | args->ld_private->data = ff_args; | |
2183 | return 0; | |
d9152114 TM |
2184 | out_nomem_free: |
2185 | kfree(ff_args); | |
2186 | out_nomem: | |
2187 | return -ENOMEM; | |
5b9b3c85 TM |
2188 | } |
2189 | ||
f0922a6c TM |
2190 | #ifdef CONFIG_NFS_V4_2 |
2191 | void | |
2192 | ff_layout_send_layouterror(struct pnfs_layout_segment *lseg) | |
2193 | { | |
2194 | struct pnfs_layout_hdr *lo = lseg->pls_layout; | |
2195 | struct nfs42_layout_error *errors; | |
2196 | LIST_HEAD(head); | |
2197 | ||
2198 | if (!nfs_server_capable(lo->plh_inode, NFS_CAP_LAYOUTERROR)) | |
2199 | return; | |
2200 | ff_layout_fetch_ds_ioerr(lo, &lseg->pls_range, &head, -1); | |
2201 | if (list_empty(&head)) | |
2202 | return; | |
2203 | ||
2204 | errors = kmalloc_array(NFS42_LAYOUTERROR_MAX, | |
2205 | sizeof(*errors), GFP_NOFS); | |
2206 | if (errors != NULL) { | |
2207 | const struct nfs4_ff_layout_ds_err *pos; | |
2208 | size_t n = 0; | |
2209 | ||
2210 | list_for_each_entry(pos, &head, list) { | |
2211 | errors[n].offset = pos->offset; | |
2212 | errors[n].length = pos->length; | |
2213 | nfs4_stateid_copy(&errors[n].stateid, &pos->stateid); | |
2214 | errors[n].errors[0].dev_id = pos->deviceid; | |
2215 | errors[n].errors[0].status = pos->status; | |
2216 | errors[n].errors[0].opnum = pos->opnum; | |
2217 | n++; | |
2218 | if (!list_is_last(&pos->list, &head) && | |
2219 | n < NFS42_LAYOUTERROR_MAX) | |
2220 | continue; | |
2221 | if (nfs42_proc_layouterror(lseg, errors, n) < 0) | |
2222 | break; | |
2223 | n = 0; | |
2224 | } | |
2225 | kfree(errors); | |
2226 | } | |
2227 | ff_layout_free_ds_ioerr(&head); | |
2228 | } | |
2229 | #else | |
2230 | void | |
2231 | ff_layout_send_layouterror(struct pnfs_layout_segment *lseg) | |
2232 | { | |
2233 | } | |
2234 | #endif | |
2235 | ||
27c43064 PT |
2236 | static int |
2237 | ff_layout_ntop4(const struct sockaddr *sap, char *buf, const size_t buflen) | |
2238 | { | |
2239 | const struct sockaddr_in *sin = (struct sockaddr_in *)sap; | |
2240 | ||
2241 | return snprintf(buf, buflen, "%pI4", &sin->sin_addr); | |
2242 | } | |
2243 | ||
2244 | static size_t | |
2245 | ff_layout_ntop6_noscopeid(const struct sockaddr *sap, char *buf, | |
2246 | const int buflen) | |
2247 | { | |
2248 | const struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sap; | |
2249 | const struct in6_addr *addr = &sin6->sin6_addr; | |
2250 | ||
2251 | /* | |
2252 | * RFC 4291, Section 2.2.2 | |
2253 | * | |
2254 | * Shorthanded ANY address | |
2255 | */ | |
2256 | if (ipv6_addr_any(addr)) | |
2257 | return snprintf(buf, buflen, "::"); | |
2258 | ||
2259 | /* | |
2260 | * RFC 4291, Section 2.2.2 | |
2261 | * | |
2262 | * Shorthanded loopback address | |
2263 | */ | |
2264 | if (ipv6_addr_loopback(addr)) | |
2265 | return snprintf(buf, buflen, "::1"); | |
2266 | ||
2267 | /* | |
2268 | * RFC 4291, Section 2.2.3 | |
2269 | * | |
2270 | * Special presentation address format for mapped v4 | |
2271 | * addresses. | |
2272 | */ | |
2273 | if (ipv6_addr_v4mapped(addr)) | |
2274 | return snprintf(buf, buflen, "::ffff:%pI4", | |
2275 | &addr->s6_addr32[3]); | |
2276 | ||
2277 | /* | |
2278 | * RFC 4291, Section 2.2.1 | |
2279 | */ | |
2280 | return snprintf(buf, buflen, "%pI6c", addr); | |
2281 | } | |
2282 | ||
2283 | /* Derived from rpc_sockaddr2uaddr */ | |
2284 | static void | |
2285 | ff_layout_encode_netaddr(struct xdr_stream *xdr, struct nfs4_pnfs_ds_addr *da) | |
2286 | { | |
2287 | struct sockaddr *sap = (struct sockaddr *)&da->da_addr; | |
2288 | char portbuf[RPCBIND_MAXUADDRPLEN]; | |
2289 | char addrbuf[RPCBIND_MAXUADDRLEN]; | |
2290 | char *netid; | |
2291 | unsigned short port; | |
2292 | int len, netid_len; | |
2293 | __be32 *p; | |
2294 | ||
2295 | switch (sap->sa_family) { | |
2296 | case AF_INET: | |
2297 | if (ff_layout_ntop4(sap, addrbuf, sizeof(addrbuf)) == 0) | |
2298 | return; | |
2299 | port = ntohs(((struct sockaddr_in *)sap)->sin_port); | |
2300 | netid = "tcp"; | |
2301 | netid_len = 3; | |
2302 | break; | |
2303 | case AF_INET6: | |
2304 | if (ff_layout_ntop6_noscopeid(sap, addrbuf, sizeof(addrbuf)) == 0) | |
2305 | return; | |
2306 | port = ntohs(((struct sockaddr_in6 *)sap)->sin6_port); | |
2307 | netid = "tcp6"; | |
2308 | netid_len = 4; | |
2309 | break; | |
2310 | default: | |
2311 | /* we only support tcp and tcp6 */ | |
2312 | WARN_ON_ONCE(1); | |
2313 | return; | |
2314 | } | |
2315 | ||
2316 | snprintf(portbuf, sizeof(portbuf), ".%u.%u", port >> 8, port & 0xff); | |
2317 | len = strlcat(addrbuf, portbuf, sizeof(addrbuf)); | |
2318 | ||
2319 | p = xdr_reserve_space(xdr, 4 + netid_len); | |
2320 | xdr_encode_opaque(p, netid, netid_len); | |
2321 | ||
2322 | p = xdr_reserve_space(xdr, 4 + len); | |
2323 | xdr_encode_opaque(p, addrbuf, len); | |
2324 | } | |
2325 | ||
2326 | static void | |
2327 | ff_layout_encode_nfstime(struct xdr_stream *xdr, | |
2328 | ktime_t t) | |
2329 | { | |
2330 | struct timespec64 ts; | |
2331 | __be32 *p; | |
2332 | ||
2333 | p = xdr_reserve_space(xdr, 12); | |
2334 | ts = ktime_to_timespec64(t); | |
2335 | p = xdr_encode_hyper(p, ts.tv_sec); | |
2336 | *p++ = cpu_to_be32(ts.tv_nsec); | |
2337 | } | |
2338 | ||
2339 | static void | |
2340 | ff_layout_encode_io_latency(struct xdr_stream *xdr, | |
2341 | struct nfs4_ff_io_stat *stat) | |
2342 | { | |
2343 | __be32 *p; | |
2344 | ||
2345 | p = xdr_reserve_space(xdr, 5 * 8); | |
2346 | p = xdr_encode_hyper(p, stat->ops_requested); | |
2347 | p = xdr_encode_hyper(p, stat->bytes_requested); | |
2348 | p = xdr_encode_hyper(p, stat->ops_completed); | |
2349 | p = xdr_encode_hyper(p, stat->bytes_completed); | |
2350 | p = xdr_encode_hyper(p, stat->bytes_not_delivered); | |
2351 | ff_layout_encode_nfstime(xdr, stat->total_busy_time); | |
2352 | ff_layout_encode_nfstime(xdr, stat->aggregate_completion_time); | |
2353 | } | |
2354 | ||
2355 | static void | |
422c93c8 TM |
2356 | ff_layout_encode_ff_layoutupdate(struct xdr_stream *xdr, |
2357 | const struct nfs42_layoutstat_devinfo *devinfo, | |
2358 | struct nfs4_ff_layout_mirror *mirror) | |
27c43064 | 2359 | { |
27c43064 PT |
2360 | struct nfs4_pnfs_ds_addr *da; |
2361 | struct nfs4_pnfs_ds *ds = mirror->mirror_ds->ds; | |
2362 | struct nfs_fh *fh = &mirror->fh_versions[0]; | |
422c93c8 | 2363 | __be32 *p; |
27c43064 PT |
2364 | |
2365 | da = list_first_entry(&ds->ds_addrs, struct nfs4_pnfs_ds_addr, da_node); | |
2366 | dprintk("%s: DS %s: encoding address %s\n", | |
2367 | __func__, ds->ds_remotestr, da->da_remotestr); | |
27c43064 PT |
2368 | /* netaddr4 */ |
2369 | ff_layout_encode_netaddr(xdr, da); | |
2370 | /* nfs_fh4 */ | |
2371 | p = xdr_reserve_space(xdr, 4 + fh->size); | |
2372 | xdr_encode_opaque(p, fh->data, fh->size); | |
2373 | /* ff_io_latency4 read */ | |
2374 | spin_lock(&mirror->lock); | |
2375 | ff_layout_encode_io_latency(xdr, &mirror->read_stat.io_stat); | |
2376 | /* ff_io_latency4 write */ | |
2377 | ff_layout_encode_io_latency(xdr, &mirror->write_stat.io_stat); | |
2378 | spin_unlock(&mirror->lock); | |
2379 | /* nfstime4 */ | |
2380 | ff_layout_encode_nfstime(xdr, ktime_sub(ktime_get(), mirror->start_time)); | |
2381 | /* bool */ | |
2382 | p = xdr_reserve_space(xdr, 4); | |
2383 | *p = cpu_to_be32(false); | |
422c93c8 TM |
2384 | } |
2385 | ||
2386 | static void | |
2387 | ff_layout_encode_layoutstats(struct xdr_stream *xdr, const void *args, | |
2388 | const struct nfs4_xdr_opaque_data *opaque) | |
2389 | { | |
2390 | struct nfs42_layoutstat_devinfo *devinfo = container_of(opaque, | |
2391 | struct nfs42_layoutstat_devinfo, ld_private); | |
2392 | __be32 *start; | |
2393 | ||
2394 | /* layoutupdate length */ | |
2395 | start = xdr_reserve_space(xdr, 4); | |
2396 | ff_layout_encode_ff_layoutupdate(xdr, devinfo, opaque->data); | |
27c43064 PT |
2397 | |
2398 | *start = cpu_to_be32((xdr->p - start - 1) * 4); | |
2399 | } | |
2400 | ||
422c93c8 TM |
2401 | static void |
2402 | ff_layout_free_layoutstats(struct nfs4_xdr_opaque_data *opaque) | |
2403 | { | |
2404 | struct nfs4_ff_layout_mirror *mirror = opaque->data; | |
2405 | ||
2406 | ff_layout_put_mirror(mirror); | |
2407 | } | |
2408 | ||
2409 | static const struct nfs4_xdr_opaque_ops layoutstat_ops = { | |
2410 | .encode = ff_layout_encode_layoutstats, | |
2411 | .free = ff_layout_free_layoutstats, | |
2412 | }; | |
2413 | ||
266d12d4 | 2414 | static int |
08e2e5bc TM |
2415 | ff_layout_mirror_prepare_stats(struct pnfs_layout_hdr *lo, |
2416 | struct nfs42_layoutstat_devinfo *devinfo, | |
266d12d4 | 2417 | int dev_limit) |
ad4dc53e | 2418 | { |
266d12d4 | 2419 | struct nfs4_flexfile_layout *ff_layout = FF_LAYOUT_FROM_HDR(lo); |
ad4dc53e PT |
2420 | struct nfs4_ff_layout_mirror *mirror; |
2421 | struct nfs4_deviceid_node *dev; | |
266d12d4 | 2422 | int i = 0; |
ad4dc53e | 2423 | |
266d12d4 TM |
2424 | list_for_each_entry(mirror, &ff_layout->mirrors, mirrors) { |
2425 | if (i >= dev_limit) | |
ad4dc53e | 2426 | break; |
65990d1a | 2427 | if (IS_ERR_OR_NULL(mirror->mirror_ds)) |
27c43064 | 2428 | continue; |
06946c6a TM |
2429 | if (!test_and_clear_bit(NFS4_FF_MIRROR_STAT_AVAIL, &mirror->flags)) |
2430 | continue; | |
266d12d4 | 2431 | /* mirror refcount put in cleanup_layoutstats */ |
81a090b9 | 2432 | if (!refcount_inc_not_zero(&mirror->ref)) |
266d12d4 TM |
2433 | continue; |
2434 | dev = &mirror->mirror_ds->id_node; | |
ad4dc53e | 2435 | memcpy(&devinfo->dev_id, &dev->deviceid, NFS4_DEVICEID4_SIZE); |
266d12d4 TM |
2436 | devinfo->offset = 0; |
2437 | devinfo->length = NFS4_MAX_UINT64; | |
2f8220c1 | 2438 | spin_lock(&mirror->lock); |
d099d7b8 | 2439 | devinfo->read_count = mirror->read_stat.io_stat.ops_completed; |
ad4dc53e | 2440 | devinfo->read_bytes = mirror->read_stat.io_stat.bytes_completed; |
d099d7b8 | 2441 | devinfo->write_count = mirror->write_stat.io_stat.ops_completed; |
ad4dc53e | 2442 | devinfo->write_bytes = mirror->write_stat.io_stat.bytes_completed; |
2f8220c1 | 2443 | spin_unlock(&mirror->lock); |
ad4dc53e | 2444 | devinfo->layout_type = LAYOUT_FLEX_FILES; |
422c93c8 TM |
2445 | devinfo->ld_private.ops = &layoutstat_ops; |
2446 | devinfo->ld_private.data = mirror; | |
ad4dc53e | 2447 | |
08e2e5bc | 2448 | devinfo++; |
266d12d4 | 2449 | i++; |
ad4dc53e | 2450 | } |
266d12d4 | 2451 | return i; |
ad4dc53e PT |
2452 | } |
2453 | ||
2454 | static int | |
2455 | ff_layout_prepare_layoutstats(struct nfs42_layoutstat_args *args) | |
2456 | { | |
266d12d4 | 2457 | struct nfs4_flexfile_layout *ff_layout; |
08e2e5bc | 2458 | const int dev_count = PNFS_LAYOUTSTATS_MAXDEV; |
ad4dc53e | 2459 | |
ad4dc53e | 2460 | /* For now, send at most PNFS_LAYOUTSTATS_MAXDEV statistics */ |
266d12d4 | 2461 | args->devinfo = kmalloc_array(dev_count, sizeof(*args->devinfo), GFP_NOIO); |
ad4dc53e PT |
2462 | if (!args->devinfo) |
2463 | return -ENOMEM; | |
2464 | ||
ad4dc53e | 2465 | spin_lock(&args->inode->i_lock); |
08e2e5bc TM |
2466 | ff_layout = FF_LAYOUT_FROM_HDR(NFS_I(args->inode)->layout); |
2467 | args->num_dev = ff_layout_mirror_prepare_stats(&ff_layout->generic_hdr, | |
2468 | &args->devinfo[0], dev_count); | |
ad4dc53e | 2469 | spin_unlock(&args->inode->i_lock); |
46c98c6d TM |
2470 | if (!args->num_dev) { |
2471 | kfree(args->devinfo); | |
2472 | args->devinfo = NULL; | |
2473 | return -ENOENT; | |
2474 | } | |
ad4dc53e PT |
2475 | |
2476 | return 0; | |
2477 | } | |
2478 | ||
76b2a303 TM |
2479 | static int |
2480 | ff_layout_set_layoutdriver(struct nfs_server *server, | |
2481 | const struct nfs_fh *dummy) | |
2482 | { | |
2483 | #if IS_ENABLED(CONFIG_NFS_V4_2) | |
2484 | server->caps |= NFS_CAP_LAYOUTSTATS; | |
2485 | #endif | |
2486 | return 0; | |
2487 | } | |
2488 | ||
d67ae825 TH |
2489 | static struct pnfs_layoutdriver_type flexfilelayout_type = { |
2490 | .id = LAYOUT_FLEX_FILES, | |
2491 | .name = "LAYOUT_FLEX_FILES", | |
2492 | .owner = THIS_MODULE, | |
f86c3ac5 | 2493 | .flags = PNFS_LAYOUTGET_ON_OPEN, |
28ced9a8 | 2494 | .max_layoutget_response = 4096, /* 1 page or so... */ |
76b2a303 | 2495 | .set_layoutdriver = ff_layout_set_layoutdriver, |
d67ae825 TH |
2496 | .alloc_layout_hdr = ff_layout_alloc_layout_hdr, |
2497 | .free_layout_hdr = ff_layout_free_layout_hdr, | |
2498 | .alloc_lseg = ff_layout_alloc_lseg, | |
2499 | .free_lseg = ff_layout_free_lseg, | |
0762ed2c | 2500 | .add_lseg = ff_layout_add_lseg, |
d67ae825 TH |
2501 | .pg_read_ops = &ff_layout_pg_read_ops, |
2502 | .pg_write_ops = &ff_layout_pg_write_ops, | |
2503 | .get_ds_info = ff_layout_get_ds_info, | |
fc87701b | 2504 | .free_deviceid_node = ff_layout_free_deviceid_node, |
338d00cf | 2505 | .mark_request_commit = pnfs_layout_mark_request_commit, |
d67ae825 TH |
2506 | .clear_request_commit = pnfs_generic_clear_request_commit, |
2507 | .scan_commit_lists = pnfs_generic_scan_commit_lists, | |
2508 | .recover_commit_reqs = pnfs_generic_recover_commit_reqs, | |
2509 | .commit_pagelist = ff_layout_commit_pagelist, | |
2510 | .read_pagelist = ff_layout_read_pagelist, | |
2511 | .write_pagelist = ff_layout_write_pagelist, | |
2512 | .alloc_deviceid_node = ff_layout_alloc_deviceid_node, | |
5b9b3c85 | 2513 | .prepare_layoutreturn = ff_layout_prepare_layoutreturn, |
5bb89b47 | 2514 | .sync = pnfs_nfs_generic_sync, |
ad4dc53e | 2515 | .prepare_layoutstats = ff_layout_prepare_layoutstats, |
d67ae825 TH |
2516 | }; |
2517 | ||
2518 | static int __init nfs4flexfilelayout_init(void) | |
2519 | { | |
2520 | printk(KERN_INFO "%s: NFSv4 Flexfile Layout Driver Registering...\n", | |
2521 | __func__); | |
2522 | return pnfs_register_layoutdriver(&flexfilelayout_type); | |
2523 | } | |
2524 | ||
2525 | static void __exit nfs4flexfilelayout_exit(void) | |
2526 | { | |
2527 | printk(KERN_INFO "%s: NFSv4 Flexfile Layout Driver Unregistering...\n", | |
2528 | __func__); | |
2529 | pnfs_unregister_layoutdriver(&flexfilelayout_type); | |
2530 | } | |
2531 | ||
2532 | MODULE_ALIAS("nfs-layouttype4-4"); | |
2533 | ||
2534 | MODULE_LICENSE("GPL"); | |
2535 | MODULE_DESCRIPTION("The NFSv4 flexfile layout driver"); | |
2536 | ||
2537 | module_init(nfs4flexfilelayout_init); | |
2538 | module_exit(nfs4flexfilelayout_exit); | |
33344e0f TM |
2539 | |
2540 | module_param(io_maxretrans, ushort, 0644); | |
2541 | MODULE_PARM_DESC(io_maxretrans, "The number of times the NFSv4.1 client " | |
2542 | "retries an I/O request before returning an error. "); |