2 * pNFS client data structures.
5 * The Regents of the University of Michigan
8 * Dean Hildebrand <dhildebz@umich.edu>
10 * Permission is granted to use, copy, create derivative works, and
11 * redistribute this software and such derivative works for any purpose,
12 * so long as the name of the University of Michigan is not used in
13 * any advertising or publicity pertaining to the use or distribution
14 * of this software without specific, written prior authorization. If
15 * the above copyright notice or any other identification of the
16 * University of Michigan is included in any copy of any portion of
17 * this software, then the disclaimer below must also be included.
19 * This software is provided as is, without representation or warranty
20 * of any kind either express or implied, including without limitation
21 * the implied warranties of merchantability, fitness for a particular
22 * purpose, or noninfringement. The Regents of the University of
23 * Michigan shall not be liable for any damages, including special,
24 * indirect, incidental, or consequential damages, with respect to any
25 * claim arising out of or in connection with the use of the software,
26 * even if it has been or is hereafter advised of the possibility of
33 #include <linux/nfs_fs.h>
34 #include <linux/nfs_page.h>
35 #include <linux/workqueue.h>
38 NFS_LSEG_VALID = 0, /* cleared when lseg is recalled/returned */
39 NFS_LSEG_ROC, /* roc bit received from server */
40 NFS_LSEG_LAYOUTCOMMIT, /* layoutcommit bit set for layoutcommit */
41 NFS_LSEG_LAYOUTRETURN, /* layoutreturn bit set for layoutreturn */
44 /* Individual ip address */
45 struct nfs4_pnfs_ds_addr {
46 struct sockaddr_storage da_addr;
48 struct list_head da_node; /* nfs4_pnfs_dev_hlist dev_dslist */
49 char *da_remotestr; /* human readable addr+port */
53 struct list_head ds_node; /* nfs4_pnfs_dev_hlist dev_dslist */
54 char *ds_remotestr; /* comma sep list of addrs */
55 struct list_head ds_addrs;
56 struct nfs_client *ds_clp;
58 unsigned long ds_state;
59 #define NFS4DS_CONNECTING 0 /* ds is establishing connection */
62 struct pnfs_layout_segment {
63 struct list_head pls_list;
64 struct list_head pls_lc_list;
65 struct pnfs_layout_range pls_range;
66 atomic_t pls_refcount;
68 unsigned long pls_flags;
69 struct pnfs_layout_hdr *pls_layout;
72 enum pnfs_try_status {
74 PNFS_NOT_ATTEMPTED = 1,
78 #ifdef CONFIG_NFS_V4_1
80 #define LAYOUT_NFSV4_1_MODULE_PREFIX "nfs-layouttype4"
83 * Default data server connection timeout and retrans vaules.
84 * Set by module parameters dataserver_timeo and dataserver_retrans.
86 #define NFS4_DEF_DS_TIMEO 600 /* in tenths of a second */
87 #define NFS4_DEF_DS_RETRANS 5
89 /* error codes for internal use */
90 #define NFS4ERR_RESET_TO_MDS 12001
91 #define NFS4ERR_RESET_TO_PNFS 12002
94 NFS_LAYOUT_RO_FAILED = 0, /* get ro layout failed stop trying */
95 NFS_LAYOUT_RW_FAILED, /* get rw layout failed stop trying */
96 NFS_LAYOUT_BULK_RECALL, /* bulk recall affecting layout */
97 NFS_LAYOUT_RETURN, /* layoutreturn in progress */
98 NFS_LAYOUT_RETURN_LOCK, /* Serialise layoutreturn */
99 NFS_LAYOUT_RETURN_REQUESTED, /* Return this layout ASAP */
100 NFS_LAYOUT_INVALID_STID, /* layout stateid id is invalid */
101 NFS_LAYOUT_FIRST_LAYOUTGET, /* Serialize first layoutget */
104 enum layoutdriver_policy_flags {
105 /* Should the pNFS client commit and return the layout upon truncate to
107 PNFS_LAYOUTRET_ON_SETATTR = 1 << 0,
108 PNFS_LAYOUTRET_ON_ERROR = 1 << 1,
109 PNFS_READ_WHOLE_PAGE = 1 << 2,
112 struct nfs4_deviceid_node;
114 /* Per-layout driver specific registration structure */
115 struct pnfs_layoutdriver_type {
116 struct list_head pnfs_tblid;
119 struct module *owner;
121 unsigned max_deviceinfo_size;
123 int (*set_layoutdriver) (struct nfs_server *, const struct nfs_fh *);
124 int (*clear_layoutdriver) (struct nfs_server *);
126 struct pnfs_layout_hdr * (*alloc_layout_hdr) (struct inode *inode, gfp_t gfp_flags);
127 void (*free_layout_hdr) (struct pnfs_layout_hdr *);
129 struct pnfs_layout_segment * (*alloc_lseg) (struct pnfs_layout_hdr *layoutid, struct nfs4_layoutget_res *lgr, gfp_t gfp_flags);
130 void (*free_lseg) (struct pnfs_layout_segment *lseg);
131 void (*add_lseg) (struct pnfs_layout_hdr *layoutid,
132 struct pnfs_layout_segment *lseg,
133 struct list_head *free_me);
135 void (*return_range) (struct pnfs_layout_hdr *lo,
136 struct pnfs_layout_range *range);
138 /* test for nfs page cache coalescing */
139 const struct nfs_pageio_ops *pg_read_ops;
140 const struct nfs_pageio_ops *pg_write_ops;
142 struct pnfs_ds_commit_info *(*get_ds_info) (struct inode *inode);
143 void (*mark_request_commit) (struct nfs_page *req,
144 struct pnfs_layout_segment *lseg,
145 struct nfs_commit_info *cinfo,
147 void (*clear_request_commit) (struct nfs_page *req,
148 struct nfs_commit_info *cinfo);
149 int (*scan_commit_lists) (struct nfs_commit_info *cinfo,
151 void (*recover_commit_reqs) (struct list_head *list,
152 struct nfs_commit_info *cinfo);
153 struct nfs_page * (*search_commit_reqs)(struct nfs_commit_info *cinfo,
155 int (*commit_pagelist)(struct inode *inode,
156 struct list_head *mds_pages,
158 struct nfs_commit_info *cinfo);
160 int (*sync)(struct inode *inode, bool datasync);
163 * Return PNFS_ATTEMPTED to indicate the layout code has attempted
164 * I/O, else return PNFS_NOT_ATTEMPTED to fall back to normal NFS
166 enum pnfs_try_status (*read_pagelist)(struct nfs_pgio_header *);
167 enum pnfs_try_status (*write_pagelist)(struct nfs_pgio_header *, int);
169 void (*free_deviceid_node) (struct nfs4_deviceid_node *);
170 struct nfs4_deviceid_node * (*alloc_deviceid_node)
171 (struct nfs_server *server, struct pnfs_device *pdev,
174 int (*prepare_layoutreturn) (struct nfs4_layoutreturn_args *);
176 void (*cleanup_layoutcommit) (struct nfs4_layoutcommit_data *data);
177 int (*prepare_layoutcommit) (struct nfs4_layoutcommit_args *args);
178 int (*prepare_layoutstats) (struct nfs42_layoutstat_args *args);
181 struct pnfs_layout_hdr {
182 atomic_t plh_refcount;
183 atomic_t plh_outstanding; /* number of RPCs out */
184 struct list_head plh_layouts; /* other client layouts */
185 struct list_head plh_bulk_destroy;
186 struct list_head plh_segs; /* layout segments list */
187 struct list_head plh_return_segs; /* invalid layout segments */
188 unsigned long plh_block_lgets; /* block LAYOUTGET if >0 */
189 unsigned long plh_retry_timestamp;
190 unsigned long plh_flags;
191 nfs4_stateid plh_stateid;
192 u32 plh_barrier; /* ignore lower seqids */
194 enum pnfs_iomode plh_return_iomode;
195 loff_t plh_lwb; /* last write byte for layoutcommit */
196 struct rpc_cred *plh_lc_cred; /* layoutcommit cred */
197 struct inode *plh_inode;
201 struct nfs4_deviceid dev_id;
202 unsigned int layout_type;
203 unsigned int mincount;
204 unsigned int maxcount; /* gdia_maxcount */
207 unsigned int pglen; /* reply buffer length */
208 unsigned char nocache : 1;/* May not be cached */
211 #define NFS4_PNFS_GETDEVLIST_MAXNUM 16
213 struct pnfs_devicelist {
215 unsigned int num_devs;
216 struct nfs4_deviceid dev_id[NFS4_PNFS_GETDEVLIST_MAXNUM];
219 extern int pnfs_register_layoutdriver(struct pnfs_layoutdriver_type *);
220 extern void pnfs_unregister_layoutdriver(struct pnfs_layoutdriver_type *);
223 extern int nfs4_proc_getdeviceinfo(struct nfs_server *server,
224 struct pnfs_device *dev,
225 struct rpc_cred *cred);
226 extern struct pnfs_layout_segment* nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout, gfp_t gfp_flags);
227 extern int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync);
230 void pnfs_get_layout_hdr(struct pnfs_layout_hdr *lo);
231 void pnfs_put_lseg(struct pnfs_layout_segment *lseg);
233 void set_pnfs_layoutdriver(struct nfs_server *, const struct nfs_fh *, struct nfs_fsinfo *);
234 void unset_pnfs_layoutdriver(struct nfs_server *);
235 void pnfs_generic_pg_check_layout(struct nfs_pageio_descriptor *pgio);
236 void pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *, struct nfs_page *);
237 int pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc);
238 void pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio,
239 struct nfs_page *req, u64 wb_size);
240 void pnfs_generic_pg_cleanup(struct nfs_pageio_descriptor *);
241 int pnfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc);
242 size_t pnfs_generic_pg_test(struct nfs_pageio_descriptor *pgio,
243 struct nfs_page *prev, struct nfs_page *req);
244 void pnfs_set_lo_fail(struct pnfs_layout_segment *lseg);
245 struct pnfs_layout_segment *pnfs_layout_process(struct nfs4_layoutget *lgp);
246 void pnfs_free_lseg_list(struct list_head *tmp_list);
247 void pnfs_destroy_layout(struct nfs_inode *);
248 void pnfs_destroy_all_layouts(struct nfs_client *);
249 int pnfs_destroy_layouts_byfsid(struct nfs_client *clp,
250 struct nfs_fsid *fsid,
252 int pnfs_destroy_layouts_byclid(struct nfs_client *clp,
254 void pnfs_put_layout_hdr(struct pnfs_layout_hdr *lo);
255 void pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo,
256 const nfs4_stateid *new,
257 bool update_barrier);
258 int pnfs_mark_matching_lsegs_invalid(struct pnfs_layout_hdr *lo,
259 struct list_head *tmp_list,
260 const struct pnfs_layout_range *recall_range,
262 int pnfs_mark_matching_lsegs_return(struct pnfs_layout_hdr *lo,
263 struct list_head *tmp_list,
264 const struct pnfs_layout_range *recall_range,
266 int pnfs_mark_layout_stateid_invalid(struct pnfs_layout_hdr *lo,
267 struct list_head *lseg_list);
268 bool pnfs_roc(struct inode *ino,
269 struct nfs4_layoutreturn_args *args,
270 struct nfs4_layoutreturn_res *res,
271 const struct rpc_cred *cred);
272 void pnfs_roc_release(struct nfs4_layoutreturn_args *args,
273 struct nfs4_layoutreturn_res *res,
275 bool pnfs_wait_on_layoutreturn(struct inode *ino, struct rpc_task *task);
276 void pnfs_set_layoutcommit(struct inode *, struct pnfs_layout_segment *, loff_t);
277 void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data);
278 int pnfs_layoutcommit_inode(struct inode *inode, bool sync);
279 int pnfs_generic_sync(struct inode *inode, bool datasync);
280 int pnfs_nfs_generic_sync(struct inode *inode, bool datasync);
281 int _pnfs_return_layout(struct inode *);
282 int pnfs_commit_and_return_layout(struct inode *);
283 void pnfs_ld_write_done(struct nfs_pgio_header *);
284 void pnfs_ld_read_done(struct nfs_pgio_header *);
285 void pnfs_read_resend_pnfs(struct nfs_pgio_header *);
286 struct pnfs_layout_segment *pnfs_update_layout(struct inode *ino,
287 struct nfs_open_context *ctx,
290 enum pnfs_iomode iomode,
293 void pnfs_layoutreturn_free_lsegs(struct pnfs_layout_hdr *lo,
294 const nfs4_stateid *arg_stateid,
295 const struct pnfs_layout_range *range,
296 const nfs4_stateid *stateid);
298 void pnfs_generic_layout_insert_lseg(struct pnfs_layout_hdr *lo,
299 struct pnfs_layout_segment *lseg,
300 bool (*is_after)(const struct pnfs_layout_range *lseg_range,
301 const struct pnfs_layout_range *old),
302 bool (*do_merge)(struct pnfs_layout_segment *lseg,
303 struct pnfs_layout_segment *old),
304 struct list_head *free_me);
306 void nfs4_deviceid_mark_client_invalid(struct nfs_client *clp);
307 int pnfs_read_done_resend_to_mds(struct nfs_pgio_header *);
308 int pnfs_write_done_resend_to_mds(struct nfs_pgio_header *);
309 struct nfs4_threshold *pnfs_mdsthreshold_alloc(void);
310 void pnfs_error_mark_layout_for_return(struct inode *inode,
311 struct pnfs_layout_segment *lseg);
312 /* nfs4_deviceid_flags */
314 NFS_DEVICEID_INVALID = 0, /* set when MDS clientid recalled */
315 NFS_DEVICEID_UNAVAILABLE, /* device temporarily unavailable */
316 NFS_DEVICEID_NOCACHE, /* device may not be cached */
320 struct nfs4_deviceid_node {
321 struct hlist_node node;
322 struct hlist_node tmpnode;
323 const struct pnfs_layoutdriver_type *ld;
324 const struct nfs_client *nfs_client;
326 unsigned long timestamp_unavailable;
327 struct nfs4_deviceid deviceid;
332 struct nfs4_deviceid_node *
333 nfs4_find_get_deviceid(struct nfs_server *server,
334 const struct nfs4_deviceid *id, struct rpc_cred *cred,
336 void nfs4_delete_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *);
337 void nfs4_init_deviceid_node(struct nfs4_deviceid_node *, struct nfs_server *,
338 const struct nfs4_deviceid *);
339 bool nfs4_put_deviceid_node(struct nfs4_deviceid_node *);
340 void nfs4_mark_deviceid_unavailable(struct nfs4_deviceid_node *node);
341 bool nfs4_test_deviceid_unavailable(struct nfs4_deviceid_node *node);
342 void nfs4_deviceid_purge_client(const struct nfs_client *);
345 void pnfs_generic_clear_request_commit(struct nfs_page *req,
346 struct nfs_commit_info *cinfo);
347 void pnfs_generic_commit_release(void *calldata);
348 void pnfs_generic_prepare_to_resend_writes(struct nfs_commit_data *data);
349 void pnfs_generic_rw_release(void *data);
350 void pnfs_generic_recover_commit_reqs(struct list_head *dst,
351 struct nfs_commit_info *cinfo);
352 int pnfs_generic_commit_pagelist(struct inode *inode,
353 struct list_head *mds_pages,
355 struct nfs_commit_info *cinfo,
356 int (*initiate_commit)(struct nfs_commit_data *data,
358 int pnfs_generic_scan_commit_lists(struct nfs_commit_info *cinfo, int max);
359 void pnfs_generic_write_commit_done(struct rpc_task *task, void *data);
360 void nfs4_pnfs_ds_put(struct nfs4_pnfs_ds *ds);
361 struct nfs4_pnfs_ds *nfs4_pnfs_ds_add(struct list_head *dsaddrs,
363 void nfs4_pnfs_v3_ds_connect_unload(void);
364 int nfs4_pnfs_ds_connect(struct nfs_server *mds_srv, struct nfs4_pnfs_ds *ds,
365 struct nfs4_deviceid_node *devid, unsigned int timeo,
366 unsigned int retrans, u32 version, u32 minor_version);
367 struct nfs4_pnfs_ds_addr *nfs4_decode_mp_ds_addr(struct net *net,
368 struct xdr_stream *xdr,
370 void pnfs_layout_mark_request_commit(struct nfs_page *req,
371 struct pnfs_layout_segment *lseg,
372 struct nfs_commit_info *cinfo,
375 static inline bool nfs_have_layout(struct inode *inode)
377 return NFS_I(inode)->layout != NULL;
380 static inline bool pnfs_layout_is_valid(const struct pnfs_layout_hdr *lo)
382 return test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags) == 0;
385 static inline struct nfs4_deviceid_node *
386 nfs4_get_deviceid(struct nfs4_deviceid_node *d)
392 static inline struct pnfs_layout_segment *
393 pnfs_get_lseg(struct pnfs_layout_segment *lseg)
396 atomic_inc(&lseg->pls_refcount);
397 smp_mb__after_atomic();
403 pnfs_is_valid_lseg(struct pnfs_layout_segment *lseg)
405 return test_bit(NFS_LSEG_VALID, &lseg->pls_flags) != 0;
408 /* Return true if a layout driver is being used for this mountpoint */
409 static inline int pnfs_enabled_sb(struct nfs_server *nfss)
411 return nfss->pnfs_curr_ld != NULL;
415 pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how,
416 struct nfs_commit_info *cinfo)
418 if (cinfo->ds == NULL || cinfo->ds->ncommitting == 0)
419 return PNFS_NOT_ATTEMPTED;
420 return NFS_SERVER(inode)->pnfs_curr_ld->commit_pagelist(inode, mds_pages, how, cinfo);
423 static inline struct pnfs_ds_commit_info *
424 pnfs_get_ds_info(struct inode *inode)
426 struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld;
428 if (ld == NULL || ld->get_ds_info == NULL)
430 return ld->get_ds_info(inode);
434 pnfs_generic_mark_devid_invalid(struct nfs4_deviceid_node *node)
436 set_bit(NFS_DEVICEID_INVALID, &node->flags);
440 pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg,
441 struct nfs_commit_info *cinfo, u32 ds_commit_idx)
443 struct inode *inode = d_inode(req->wb_context->dentry);
444 struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld;
446 if (lseg == NULL || ld->mark_request_commit == NULL)
448 ld->mark_request_commit(req, lseg, cinfo, ds_commit_idx);
453 pnfs_clear_request_commit(struct nfs_page *req, struct nfs_commit_info *cinfo)
455 struct inode *inode = d_inode(req->wb_context->dentry);
456 struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld;
458 if (ld == NULL || ld->clear_request_commit == NULL)
460 ld->clear_request_commit(req, cinfo);
465 pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo,
468 if (cinfo->ds == NULL || cinfo->ds->nwritten == 0)
471 return NFS_SERVER(inode)->pnfs_curr_ld->scan_commit_lists(cinfo, max);
474 static inline struct nfs_page *
475 pnfs_search_commit_reqs(struct inode *inode, struct nfs_commit_info *cinfo,
478 struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld;
480 if (ld == NULL || ld->search_commit_reqs == NULL)
482 return ld->search_commit_reqs(cinfo, page);
485 /* Should the pNFS client commit and return the layout upon a setattr */
487 pnfs_ld_layoutret_on_setattr(struct inode *inode)
489 if (!pnfs_enabled_sb(NFS_SERVER(inode)))
491 return NFS_SERVER(inode)->pnfs_curr_ld->flags &
492 PNFS_LAYOUTRET_ON_SETATTR;
496 pnfs_ld_read_whole_page(struct inode *inode)
498 if (!pnfs_enabled_sb(NFS_SERVER(inode)))
500 return NFS_SERVER(inode)->pnfs_curr_ld->flags & PNFS_READ_WHOLE_PAGE;
504 pnfs_sync_inode(struct inode *inode, bool datasync)
506 if (!pnfs_enabled_sb(NFS_SERVER(inode)))
508 return NFS_SERVER(inode)->pnfs_curr_ld->sync(inode, datasync);
512 pnfs_layoutcommit_outstanding(struct inode *inode)
514 struct nfs_inode *nfsi = NFS_I(inode);
516 return test_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags) != 0 ||
517 test_bit(NFS_INO_LAYOUTCOMMITTING, &nfsi->flags) != 0;
520 static inline int pnfs_return_layout(struct inode *ino)
522 struct nfs_inode *nfsi = NFS_I(ino);
523 struct nfs_server *nfss = NFS_SERVER(ino);
525 if (pnfs_enabled_sb(nfss) && nfsi->layout)
526 return _pnfs_return_layout(ino);
532 pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src,
533 struct nfs_server *nfss)
535 return (dst && src && src->bm != 0 && nfss->pnfs_curr_ld &&
536 nfss->pnfs_curr_ld->id == src->l_type);
540 pnfs_calc_offset_end(u64 offset, u64 len)
542 if (len == NFS4_MAX_UINT64 || len >= NFS4_MAX_UINT64 - offset)
543 return NFS4_MAX_UINT64;
544 return offset + len - 1;
548 pnfs_calc_offset_length(u64 offset, u64 end)
550 if (end == NFS4_MAX_UINT64 || end <= offset)
551 return NFS4_MAX_UINT64;
552 return 1 + end - offset;
556 pnfs_copy_range(struct pnfs_layout_range *dst,
557 const struct pnfs_layout_range *src)
559 memcpy(dst, src, sizeof(*dst));
563 pnfs_end_offset(u64 start, u64 len)
565 if (NFS4_MAX_UINT64 - start <= len)
566 return NFS4_MAX_UINT64;
571 * Are 2 ranges intersecting?
573 * [----------------------------------)
578 pnfs_is_range_intersecting(u64 start1, u64 end1, u64 start2, u64 end2)
580 return (end1 == NFS4_MAX_UINT64 || start2 < end1) &&
581 (end2 == NFS4_MAX_UINT64 || start1 < end2);
585 pnfs_lseg_range_intersecting(const struct pnfs_layout_range *l1,
586 const struct pnfs_layout_range *l2)
588 u64 end1 = pnfs_end_offset(l1->offset, l1->length);
589 u64 end2 = pnfs_end_offset(l2->offset, l2->length);
591 return pnfs_is_range_intersecting(l1->offset, end1, l2->offset, end2);
595 pnfs_lseg_request_intersecting(struct pnfs_layout_segment *lseg, struct nfs_page *req)
597 u64 seg_last = pnfs_end_offset(lseg->pls_range.offset, lseg->pls_range.length);
598 u64 req_last = req_offset(req) + req->wb_bytes;
600 return pnfs_is_range_intersecting(lseg->pls_range.offset, seg_last,
601 req_offset(req), req_last);
604 extern unsigned int layoutstats_timer;
607 void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id);
609 static inline void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id)
613 #endif /* NFS_DEBUG */
614 #else /* CONFIG_NFS_V4_1 */
616 static inline bool nfs_have_layout(struct inode *inode)
621 static inline void pnfs_destroy_all_layouts(struct nfs_client *clp)
625 static inline void pnfs_destroy_layout(struct nfs_inode *nfsi)
629 static inline struct pnfs_layout_segment *
630 pnfs_get_lseg(struct pnfs_layout_segment *lseg)
635 static inline void pnfs_put_lseg(struct pnfs_layout_segment *lseg)
639 static inline int pnfs_return_layout(struct inode *ino)
644 static inline int pnfs_commit_and_return_layout(struct inode *inode)
650 pnfs_ld_layoutret_on_setattr(struct inode *inode)
656 pnfs_ld_read_whole_page(struct inode *inode)
662 pnfs_sync_inode(struct inode *inode, bool datasync)
668 pnfs_layoutcommit_outstanding(struct inode *inode)
675 pnfs_roc(struct inode *ino,
676 struct nfs4_layoutreturn_args *args,
677 struct nfs4_layoutreturn_res *res,
678 const struct rpc_cred *cred)
684 pnfs_roc_release(struct nfs4_layoutreturn_args *args,
685 struct nfs4_layoutreturn_res *res,
691 pnfs_wait_on_layoutreturn(struct inode *ino, struct rpc_task *task)
696 static inline void set_pnfs_layoutdriver(struct nfs_server *s,
697 const struct nfs_fh *mntfh,
698 struct nfs_fsinfo *fsinfo)
702 static inline void unset_pnfs_layoutdriver(struct nfs_server *s)
707 pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how,
708 struct nfs_commit_info *cinfo)
710 return PNFS_NOT_ATTEMPTED;
713 static inline struct pnfs_ds_commit_info *
714 pnfs_get_ds_info(struct inode *inode)
720 pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg,
721 struct nfs_commit_info *cinfo, u32 ds_commit_idx)
727 pnfs_clear_request_commit(struct nfs_page *req, struct nfs_commit_info *cinfo)
733 pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo,
739 static inline struct nfs_page *
740 pnfs_search_commit_reqs(struct inode *inode, struct nfs_commit_info *cinfo,
746 static inline int pnfs_layoutcommit_inode(struct inode *inode, bool sync)
752 pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src,
753 struct nfs_server *nfss)
758 static inline struct nfs4_threshold *pnfs_mdsthreshold_alloc(void)
763 static inline void nfs4_pnfs_v3_ds_connect_unload(void)
767 #endif /* CONFIG_NFS_V4_1 */
769 #if IS_ENABLED(CONFIG_NFS_V4_2)
770 int pnfs_report_layoutstat(struct inode *inode, gfp_t gfp_flags);
773 pnfs_report_layoutstat(struct inode *inode, gfp_t gfp_flags)
779 #endif /* FS_NFS_PNFS_H */