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Ricardo Labiaga85e174b2010-10-20 00:17:58 -04001/*
2 * pNFS client data structures.
3 *
4 * Copyright (c) 2002
5 * The Regents of the University of Michigan
6 * All Rights Reserved
7 *
8 * Dean Hildebrand <dhildebz@umich.edu>
9 *
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.
18 *
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
27 * such damages.
28 */
29
30#ifndef FS_NFS_PNFS_H
31#define FS_NFS_PNFS_H
32
Benny Halevy45df3c82011-05-05 08:28:46 +030033#include <linux/nfs_fs.h>
Fred Isaman94ad1c82011-03-01 01:34:14 +000034#include <linux/nfs_page.h>
35
Fred Isaman4541d162011-01-06 11:36:23 +000036enum {
37 NFS_LSEG_VALID = 0, /* cleared when lseg is recalled/returned */
Fred Isamanf7e89172011-01-06 11:36:32 +000038 NFS_LSEG_ROC, /* roc bit received from server */
Peng Taoa9bae562011-07-30 20:52:33 -040039 NFS_LSEG_LAYOUTCOMMIT, /* layoutcommit bit set for layoutcommit */
Fred Isaman4541d162011-01-06 11:36:23 +000040};
41
Andy Adamson974cec82010-10-20 00:18:02 -040042struct pnfs_layout_segment {
Fred Isaman566052c2011-01-06 11:36:20 +000043 struct list_head pls_list;
Peng Taoa9bae562011-07-30 20:52:33 -040044 struct list_head pls_lc_list;
Fred Isaman566052c2011-01-06 11:36:20 +000045 struct pnfs_layout_range pls_range;
Fred Isaman4541d162011-01-06 11:36:23 +000046 atomic_t pls_refcount;
47 unsigned long pls_flags;
Fred Isaman566052c2011-01-06 11:36:20 +000048 struct pnfs_layout_hdr *pls_layout;
Andy Adamson974cec82010-10-20 00:18:02 -040049};
50
Andy Adamson64419a92011-03-01 01:34:16 +000051enum pnfs_try_status {
52 PNFS_ATTEMPTED = 0,
53 PNFS_NOT_ATTEMPTED = 1,
54};
55
Ricardo Labiaga85e174b2010-10-20 00:17:58 -040056#ifdef CONFIG_NFS_V4_1
57
58#define LAYOUT_NFSV4_1_MODULE_PREFIX "nfs-layouttype4"
59
Benny Halevye5e94012010-10-20 00:18:01 -040060enum {
61 NFS_LAYOUT_RO_FAILED = 0, /* get ro layout failed stop trying */
62 NFS_LAYOUT_RW_FAILED, /* get rw layout failed stop trying */
Fred Isaman43f1b3d2011-01-06 11:36:30 +000063 NFS_LAYOUT_BULK_RECALL, /* bulk recall affecting layout */
Fred Isamanf7e89172011-01-06 11:36:32 +000064 NFS_LAYOUT_ROC, /* some lseg had roc bit set */
Trond Myklebustd527e5c2012-10-11 13:43:38 -040065 NFS_LAYOUT_RETURN, /* Return this layout ASAP */
Benny Halevye5e94012010-10-20 00:18:01 -040066};
67
Benny Halevy8a1636c2010-07-14 15:43:57 -040068enum layoutdriver_policy_flags {
69 /* Should the pNFS client commit and return the layout upon a setattr */
70 PNFS_LAYOUTRET_ON_SETATTR = 1 << 0,
Boaz Harroshfe0fe832012-01-06 09:31:20 +020071 PNFS_LAYOUTRET_ON_ERROR = 1 << 1,
Benny Halevy8a1636c2010-07-14 15:43:57 -040072};
73
Benny Halevy1775bc32011-05-20 13:47:33 +020074struct nfs4_deviceid_node;
75
Ricardo Labiaga85e174b2010-10-20 00:17:58 -040076/* Per-layout driver specific registration structure */
77struct pnfs_layoutdriver_type {
Fred Isaman02c35fc2010-10-20 00:17:59 -040078 struct list_head pnfs_tblid;
79 const u32 id;
80 const char *name;
81 struct module *owner;
Benny Halevy8a1636c2010-07-14 15:43:57 -040082 unsigned flags;
Benny Halevy636fb9c2011-05-22 19:51:33 +030083
Benny Halevy738fd0f32011-07-30 20:52:36 -040084 int (*set_layoutdriver) (struct nfs_server *, const struct nfs_fh *);
85 int (*clear_layoutdriver) (struct nfs_server *);
86
Benny Halevy636fb9c2011-05-22 19:51:33 +030087 struct pnfs_layout_hdr * (*alloc_layout_hdr) (struct inode *inode, gfp_t gfp_flags);
88 void (*free_layout_hdr) (struct pnfs_layout_hdr *);
89
Trond Myklebusta75b9df2011-05-11 18:00:51 -040090 struct pnfs_layout_segment * (*alloc_lseg) (struct pnfs_layout_hdr *layoutid, struct nfs4_layoutget_res *lgr, gfp_t gfp_flags);
Andy Adamsonb1f69b72010-10-20 00:18:03 -040091 void (*free_lseg) (struct pnfs_layout_segment *lseg);
Fred Isaman94ad1c82011-03-01 01:34:14 +000092
93 /* test for nfs page cache coalescing */
Trond Myklebust1751c362011-06-10 13:30:23 -040094 const struct nfs_pageio_ops *pg_read_ops;
95 const struct nfs_pageio_ops *pg_write_ops;
Andy Adamson64419a92011-03-01 01:34:16 +000096
Fred Isamanea2cf222012-04-20 14:47:53 -040097 struct pnfs_ds_commit_info *(*get_ds_info) (struct inode *inode);
Trond Myklebust8dd37752012-03-15 17:16:40 -040098 void (*mark_request_commit) (struct nfs_page *req,
Fred Isamanea2cf222012-04-20 14:47:53 -040099 struct pnfs_layout_segment *lseg,
100 struct nfs_commit_info *cinfo);
101 void (*clear_request_commit) (struct nfs_page *req,
102 struct nfs_commit_info *cinfo);
103 int (*scan_commit_lists) (struct nfs_commit_info *cinfo,
104 int max);
Fred Isaman1763da12012-04-20 14:47:57 -0400105 void (*recover_commit_reqs) (struct list_head *list,
106 struct nfs_commit_info *cinfo);
Fred Isamanea2cf222012-04-20 14:47:53 -0400107 int (*commit_pagelist)(struct inode *inode,
108 struct list_head *mds_pages,
109 int how,
110 struct nfs_commit_info *cinfo);
Fred Isamana861a1e2011-03-23 13:27:51 +0000111
Andy Adamson64419a92011-03-01 01:34:16 +0000112 /*
113 * Return PNFS_ATTEMPTED to indicate the layout code has attempted
114 * I/O, else return PNFS_NOT_ATTEMPTED to fall back to normal NFS
115 */
Anna Schumaker9c7e1b32014-05-06 09:12:26 -0400116 enum pnfs_try_status (*read_pagelist) (struct nfs_pgio_data *nfs_data);
117 enum pnfs_try_status (*write_pagelist) (struct nfs_pgio_data *nfs_data, int how);
Benny Halevy1775bc32011-05-20 13:47:33 +0200118
119 void (*free_deviceid_node) (struct nfs4_deviceid_node *);
Andy Adamson04a55542011-05-22 19:53:10 +0300120
121 void (*encode_layoutreturn) (struct pnfs_layout_hdr *layoutid,
122 struct xdr_stream *xdr,
123 const struct nfs4_layoutreturn_args *args);
Benny Halevyac7db722011-05-22 19:53:48 +0300124
Andy Adamsondb29c082011-07-30 20:52:38 -0400125 void (*cleanup_layoutcommit) (struct nfs4_layoutcommit_data *data);
126
Benny Halevyac7db722011-05-22 19:53:48 +0300127 void (*encode_layoutcommit) (struct pnfs_layout_hdr *layoutid,
128 struct xdr_stream *xdr,
129 const struct nfs4_layoutcommit_args *args);
Ricardo Labiaga85e174b2010-10-20 00:17:58 -0400130};
131
Benny Halevye5e94012010-10-20 00:18:01 -0400132struct pnfs_layout_hdr {
Fred Isamancc6e5342011-01-06 11:36:28 +0000133 atomic_t plh_refcount;
Fred Isamanb7edfaa2011-01-06 11:36:21 +0000134 struct list_head plh_layouts; /* other client layouts */
Trond Myklebustfd9a8d72013-02-12 09:48:42 -0500135 struct list_head plh_bulk_destroy;
Fred Isamanb7edfaa2011-01-06 11:36:21 +0000136 struct list_head plh_segs; /* layout segments list */
Fred Isamanb7edfaa2011-01-06 11:36:21 +0000137 nfs4_stateid plh_stateid;
Fred Isamancf7d63f2011-01-06 11:36:25 +0000138 atomic_t plh_outstanding; /* number of RPCs out */
Fred Isamanf7e89172011-01-06 11:36:32 +0000139 unsigned long plh_block_lgets; /* block LAYOUTGET if >0 */
Fred Isaman43f1b3d2011-01-06 11:36:30 +0000140 u32 plh_barrier; /* ignore lower seqids */
Trond Myklebust25c75332012-09-18 17:01:12 -0400141 unsigned long plh_retry_timestamp;
Fred Isaman566052c2011-01-06 11:36:20 +0000142 unsigned long plh_flags;
Peng Taoacff58802011-07-30 20:52:31 -0400143 loff_t plh_lwb; /* last write byte for layoutcommit */
Peng Tao9fa40752011-07-30 20:52:32 -0400144 struct rpc_cred *plh_lc_cred; /* layoutcommit cred */
Fred Isamanb7edfaa2011-01-06 11:36:21 +0000145 struct inode *plh_inode;
Benny Halevye5e94012010-10-20 00:18:01 -0400146};
147
Andy Adamsonb1f69b72010-10-20 00:18:03 -0400148struct pnfs_device {
149 struct nfs4_deviceid dev_id;
150 unsigned int layout_type;
151 unsigned int mincount;
Andy Adamsonf1c097b2013-06-25 19:02:53 -0400152 unsigned int maxcount; /* gdia_maxcount */
Andy Adamsonb1f69b72010-10-20 00:18:03 -0400153 struct page **pages;
Andy Adamsonb1f69b72010-10-20 00:18:03 -0400154 unsigned int pgbase;
Andy Adamsonf1c097b2013-06-25 19:02:53 -0400155 unsigned int pglen; /* reply buffer length */
Andy Adamsonb1f69b72010-10-20 00:18:03 -0400156};
157
Andy Adamson7f11d8d2011-07-30 20:52:35 -0400158#define NFS4_PNFS_GETDEVLIST_MAXNUM 16
159
160struct pnfs_devicelist {
161 unsigned int eof;
162 unsigned int num_devs;
163 struct nfs4_deviceid dev_id[NFS4_PNFS_GETDEVLIST_MAXNUM];
164};
165
Fred Isaman02c35fc2010-10-20 00:17:59 -0400166extern int pnfs_register_layoutdriver(struct pnfs_layoutdriver_type *);
167extern void pnfs_unregister_layoutdriver(struct pnfs_layoutdriver_type *);
168
Andy Adamsonb1f69b72010-10-20 00:18:03 -0400169/* nfs4proc.c */
Andy Adamson7f11d8d2011-07-30 20:52:35 -0400170extern int nfs4_proc_getdevicelist(struct nfs_server *server,
171 const struct nfs_fh *fh,
172 struct pnfs_devicelist *devlist);
Andy Adamsonb1f69b72010-10-20 00:18:03 -0400173extern int nfs4_proc_getdeviceinfo(struct nfs_server *server,
Trond Myklebustcd5875f2013-05-20 11:42:54 -0400174 struct pnfs_device *dev,
175 struct rpc_cred *cred);
Trond Myklebusta0b0a6e2012-09-17 17:12:15 -0400176extern struct pnfs_layout_segment* nfs4_proc_layoutget(struct nfs4_layoutget *lgp, gfp_t gfp_flags);
Benny Halevycbe82602011-05-22 19:52:37 +0300177extern int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp);
Andy Adamsonb1f69b72010-10-20 00:18:03 -0400178
179/* pnfs.c */
Trond Myklebust70c3bd22012-09-18 20:51:13 -0400180void pnfs_get_layout_hdr(struct pnfs_layout_hdr *lo);
Trond Myklebust9369a432012-09-18 20:57:08 -0400181void pnfs_put_lseg(struct pnfs_layout_segment *lseg);
Trond Myklebust1751c362011-06-10 13:30:23 -0400182
Benny Halevy738fd0f32011-07-30 20:52:36 -0400183void set_pnfs_layoutdriver(struct nfs_server *, const struct nfs_fh *, u32);
Ricardo Labiaga85e174b2010-10-20 00:17:58 -0400184void unset_pnfs_layoutdriver(struct nfs_server *);
Trond Myklebustd8007d42011-06-10 13:30:23 -0400185void pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *, struct nfs_page *);
Trond Myklebust493292d2011-07-13 15:58:28 -0400186int pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc);
Peng Tao62965562012-09-25 14:55:57 +0800187void pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio,
188 struct nfs_page *req, u64 wb_size);
Trond Myklebustdce81292011-07-13 15:59:19 -0400189int pnfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc);
Weston Andros Adamsonb4fdac12014-05-15 11:56:43 -0400190size_t pnfs_generic_pg_test(struct nfs_pageio_descriptor *pgio,
191 struct nfs_page *prev, struct nfs_page *req);
Peng Tao1b0ae062011-09-22 21:50:12 -0400192void pnfs_set_lo_fail(struct pnfs_layout_segment *lseg);
Trond Myklebusta0b0a6e2012-09-17 17:12:15 -0400193struct pnfs_layout_segment *pnfs_layout_process(struct nfs4_layoutget *lgp);
Fred Isaman43f1b3d2011-01-06 11:36:30 +0000194void pnfs_free_lseg_list(struct list_head *tmp_list);
Benny Halevye5e94012010-10-20 00:18:01 -0400195void pnfs_destroy_layout(struct nfs_inode *);
Andy Adamson974cec82010-10-20 00:18:02 -0400196void pnfs_destroy_all_layouts(struct nfs_client *);
Trond Myklebustfd9a8d72013-02-12 09:48:42 -0500197int pnfs_destroy_layouts_byfsid(struct nfs_client *clp,
198 struct nfs_fsid *fsid,
199 bool is_recall);
200int pnfs_destroy_layouts_byclid(struct nfs_client *clp,
201 bool is_recall);
Trond Myklebust70c3bd22012-09-18 20:51:13 -0400202void pnfs_put_layout_hdr(struct pnfs_layout_hdr *lo);
Fred Isaman43f1b3d2011-01-06 11:36:30 +0000203void pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo,
204 const nfs4_stateid *new,
205 bool update_barrier);
Fred Isamanfd6002e2011-01-06 11:36:22 +0000206int pnfs_choose_layoutget_stateid(nfs4_stateid *dst,
207 struct pnfs_layout_hdr *lo,
208 struct nfs4_state *open_state);
Trond Myklebust49a85062012-09-18 20:43:31 -0400209int pnfs_mark_matching_lsegs_invalid(struct pnfs_layout_hdr *lo,
Fred Isaman43f1b3d2011-01-06 11:36:30 +0000210 struct list_head *tmp_list,
Benny Halevy778b5502011-05-22 19:48:02 +0300211 struct pnfs_layout_range *recall_range);
Fred Isamanf7e89172011-01-06 11:36:32 +0000212bool pnfs_roc(struct inode *ino);
213void pnfs_roc_release(struct inode *ino);
214void pnfs_roc_set_barrier(struct inode *ino, u32 barrier);
Trond Myklebust7fdab062012-09-20 20:15:57 -0400215bool pnfs_roc_drain(struct inode *ino, u32 *barrier, struct rpc_task *task);
Anna Schumaker9c7e1b32014-05-06 09:12:26 -0400216void pnfs_set_layoutcommit(struct nfs_pgio_data *wdata);
Andy Adamsondb29c082011-07-30 20:52:38 -0400217void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data);
Andy Adamsonef311532011-03-12 02:58:10 -0500218int pnfs_layoutcommit_inode(struct inode *inode, bool sync);
Benny Halevycbe82602011-05-22 19:52:37 +0300219int _pnfs_return_layout(struct inode *);
Trond Myklebust24028672013-03-20 13:23:33 -0400220int pnfs_commit_and_return_layout(struct inode *);
Anna Schumaker9c7e1b32014-05-06 09:12:26 -0400221void pnfs_ld_write_done(struct nfs_pgio_data *);
222void pnfs_ld_read_done(struct nfs_pgio_data *);
Andy Adamson7c24d942011-06-13 18:22:38 -0400223struct pnfs_layout_segment *pnfs_update_layout(struct inode *ino,
224 struct nfs_open_context *ctx,
225 loff_t pos,
226 u64 count,
227 enum pnfs_iomode iomode,
228 gfp_t gfp_flags);
Benny Halevye5e94012010-10-20 00:18:01 -0400229
Andy Adamsonc47abcf2011-06-15 17:52:40 -0400230void nfs4_deviceid_mark_client_invalid(struct nfs_client *clp);
Andy Adamsone7dd79af2012-04-27 17:53:46 -0400231int pnfs_read_done_resend_to_mds(struct inode *inode, struct list_head *head,
Benny Halevy78f33272013-02-24 09:55:57 -0500232 const struct nfs_pgio_completion_ops *compl_ops,
233 struct nfs_direct_req *dreq);
Andy Adamsone7dd79af2012-04-27 17:53:46 -0400234int pnfs_write_done_resend_to_mds(struct inode *inode, struct list_head *head,
Benny Halevy78f33272013-02-24 09:55:57 -0500235 const struct nfs_pgio_completion_ops *compl_ops,
236 struct nfs_direct_req *dreq);
Andy Adamson82be4172012-05-23 05:02:35 -0400237struct nfs4_threshold *pnfs_mdsthreshold_alloc(void);
Andy Adamsonc47abcf2011-06-15 17:52:40 -0400238
239/* nfs4_deviceid_flags */
240enum {
241 NFS_DEVICEID_INVALID = 0, /* set when MDS clientid recalled */
Trond Myklebust1dfed272012-09-18 19:51:12 -0400242 NFS_DEVICEID_UNAVAILABLE, /* device temporarily unavailable */
Andy Adamsonc47abcf2011-06-15 17:52:40 -0400243};
244
Benny Halevya1eaecb2011-05-19 22:14:47 -0400245/* pnfs_dev.c */
246struct nfs4_deviceid_node {
247 struct hlist_node node;
Weston Andros Adamson9e3bd4e2011-05-31 21:46:50 -0400248 struct hlist_node tmpnode;
Benny Halevy1775bc32011-05-20 13:47:33 +0200249 const struct pnfs_layoutdriver_type *ld;
Benny Halevya1eaecb2011-05-19 22:14:47 -0400250 const struct nfs_client *nfs_client;
Andy Adamsonc47abcf2011-06-15 17:52:40 -0400251 unsigned long flags;
Trond Myklebust1dfed272012-09-18 19:51:12 -0400252 unsigned long timestamp_unavailable;
Benny Halevya1eaecb2011-05-19 22:14:47 -0400253 struct nfs4_deviceid deviceid;
254 atomic_t ref;
255};
256
Benny Halevy35c8bb52011-05-24 18:04:02 +0300257struct nfs4_deviceid_node *nfs4_find_get_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *);
Benny Halevy35c8bb52011-05-24 18:04:02 +0300258void nfs4_delete_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *);
Benny Halevya1eaecb2011-05-19 22:14:47 -0400259void nfs4_init_deviceid_node(struct nfs4_deviceid_node *,
Benny Halevy1775bc32011-05-20 13:47:33 +0200260 const struct pnfs_layoutdriver_type *,
Benny Halevya1eaecb2011-05-19 22:14:47 -0400261 const struct nfs_client *,
262 const struct nfs4_deviceid *);
263struct nfs4_deviceid_node *nfs4_insert_deviceid_node(struct nfs4_deviceid_node *);
264bool nfs4_put_deviceid_node(struct nfs4_deviceid_node *);
Trond Myklebust1dfed272012-09-18 19:51:12 -0400265void nfs4_mark_deviceid_unavailable(struct nfs4_deviceid_node *node);
266bool nfs4_test_deviceid_unavailable(struct nfs4_deviceid_node *node);
Benny Halevy1775bc32011-05-20 13:47:33 +0200267void nfs4_deviceid_purge_client(const struct nfs_client *);
Benny Halevya1eaecb2011-05-19 22:14:47 -0400268
Fred Isamand684d2a2011-03-01 01:34:13 +0000269static inline struct pnfs_layout_segment *
Trond Myklebust9369a432012-09-18 20:57:08 -0400270pnfs_get_lseg(struct pnfs_layout_segment *lseg)
Fred Isamand684d2a2011-03-01 01:34:13 +0000271{
272 if (lseg) {
273 atomic_inc(&lseg->pls_refcount);
Peter Zijlstra4e857c52014-03-17 18:06:10 +0100274 smp_mb__after_atomic();
Fred Isamand684d2a2011-03-01 01:34:13 +0000275 }
276 return lseg;
277}
278
Benny Halevye5e94012010-10-20 00:18:01 -0400279/* Return true if a layout driver is being used for this mountpoint */
280static inline int pnfs_enabled_sb(struct nfs_server *nfss)
281{
282 return nfss->pnfs_curr_ld != NULL;
283}
Ricardo Labiaga85e174b2010-10-20 00:17:58 -0400284
Fred Isamana861a1e2011-03-23 13:27:51 +0000285static inline int
Fred Isamanea2cf222012-04-20 14:47:53 -0400286pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how,
287 struct nfs_commit_info *cinfo)
Fred Isamana861a1e2011-03-23 13:27:51 +0000288{
Fred Isamanea2cf222012-04-20 14:47:53 -0400289 if (cinfo->ds == NULL || cinfo->ds->ncommitting == 0)
Fred Isamana861a1e2011-03-23 13:27:51 +0000290 return PNFS_NOT_ATTEMPTED;
Fred Isamanea2cf222012-04-20 14:47:53 -0400291 return NFS_SERVER(inode)->pnfs_curr_ld->commit_pagelist(inode, mds_pages, how, cinfo);
292}
293
294static inline struct pnfs_ds_commit_info *
295pnfs_get_ds_info(struct inode *inode)
296{
297 struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld;
298
299 if (ld == NULL || ld->get_ds_info == NULL)
300 return NULL;
301 return ld->get_ds_info(inode);
Fred Isamana861a1e2011-03-23 13:27:51 +0000302}
303
Trond Myklebust8dd37752012-03-15 17:16:40 -0400304static inline bool
Fred Isamanea2cf222012-04-20 14:47:53 -0400305pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg,
306 struct nfs_commit_info *cinfo)
Fred Isamana861a1e2011-03-23 13:27:51 +0000307{
Fred Isamand6d6dc72012-03-08 17:29:35 -0500308 struct inode *inode = req->wb_context->dentry->d_inode;
Trond Myklebust8dd37752012-03-15 17:16:40 -0400309 struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld;
Fred Isamana861a1e2011-03-23 13:27:51 +0000310
Trond Myklebust8dd37752012-03-15 17:16:40 -0400311 if (lseg == NULL || ld->mark_request_commit == NULL)
312 return false;
Fred Isamanea2cf222012-04-20 14:47:53 -0400313 ld->mark_request_commit(req, lseg, cinfo);
Trond Myklebust8dd37752012-03-15 17:16:40 -0400314 return true;
Fred Isamana861a1e2011-03-23 13:27:51 +0000315}
316
Trond Myklebust8dd37752012-03-15 17:16:40 -0400317static inline bool
Fred Isamanea2cf222012-04-20 14:47:53 -0400318pnfs_clear_request_commit(struct nfs_page *req, struct nfs_commit_info *cinfo)
Fred Isamana861a1e2011-03-23 13:27:51 +0000319{
Fred Isamand6d6dc72012-03-08 17:29:35 -0500320 struct inode *inode = req->wb_context->dentry->d_inode;
Trond Myklebust8dd37752012-03-15 17:16:40 -0400321 struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld;
Fred Isamand6d6dc72012-03-08 17:29:35 -0500322
Trond Myklebust8dd37752012-03-15 17:16:40 -0400323 if (ld == NULL || ld->clear_request_commit == NULL)
324 return false;
Fred Isamanea2cf222012-04-20 14:47:53 -0400325 ld->clear_request_commit(req, cinfo);
Trond Myklebust8dd37752012-03-15 17:16:40 -0400326 return true;
Fred Isamand6d6dc72012-03-08 17:29:35 -0500327}
328
329static inline int
Fred Isamanea2cf222012-04-20 14:47:53 -0400330pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo,
331 int max)
Fred Isamand6d6dc72012-03-08 17:29:35 -0500332{
Fred Isamanea2cf222012-04-20 14:47:53 -0400333 if (cinfo->ds == NULL || cinfo->ds->nwritten == 0)
Fred Isamand6d6dc72012-03-08 17:29:35 -0500334 return 0;
Fred Isamanea2cf222012-04-20 14:47:53 -0400335 else
336 return NFS_SERVER(inode)->pnfs_curr_ld->scan_commit_lists(cinfo, max);
Fred Isamana861a1e2011-03-23 13:27:51 +0000337}
338
Fred Isaman1763da12012-04-20 14:47:57 -0400339static inline void
340pnfs_recover_commit_reqs(struct inode *inode, struct list_head *list,
341 struct nfs_commit_info *cinfo)
342{
343 if (cinfo->ds == NULL || cinfo->ds->nwritten == 0)
344 return;
345 NFS_SERVER(inode)->pnfs_curr_ld->recover_commit_reqs(list, cinfo);
346}
347
Benny Halevy8a1636c2010-07-14 15:43:57 -0400348/* Should the pNFS client commit and return the layout upon a setattr */
349static inline bool
350pnfs_ld_layoutret_on_setattr(struct inode *inode)
351{
352 if (!pnfs_enabled_sb(NFS_SERVER(inode)))
353 return false;
354 return NFS_SERVER(inode)->pnfs_curr_ld->flags &
355 PNFS_LAYOUTRET_ON_SETATTR;
356}
357
Trond Myklebustd8c951c2014-01-13 12:08:11 -0500358static inline bool
359pnfs_layoutcommit_outstanding(struct inode *inode)
360{
361 struct nfs_inode *nfsi = NFS_I(inode);
362
363 return test_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags) != 0 ||
364 test_bit(NFS_INO_LAYOUTCOMMITTING, &nfsi->flags) != 0;
365}
366
Benny Halevycbe82602011-05-22 19:52:37 +0300367static inline int pnfs_return_layout(struct inode *ino)
368{
369 struct nfs_inode *nfsi = NFS_I(ino);
370 struct nfs_server *nfss = NFS_SERVER(ino);
371
372 if (pnfs_enabled_sb(nfss) && nfsi->layout)
373 return _pnfs_return_layout(ino);
374
375 return 0;
376}
377
Andy Adamson82be4172012-05-23 05:02:35 -0400378static inline bool
379pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src,
380 struct nfs_server *nfss)
381{
Fred Isamanfb47ddc2012-06-07 11:42:12 -0400382 return (dst && src && src->bm != 0 && nfss->pnfs_curr_ld &&
Andy Adamson82be4172012-05-23 05:02:35 -0400383 nfss->pnfs_curr_ld->id == src->l_type);
384}
385
Trond Myklebust6f008662012-03-20 14:12:46 -0400386#ifdef NFS_DEBUG
387void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id);
388#else
389static inline void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id)
390{
391}
392#endif /* NFS_DEBUG */
Ricardo Labiaga85e174b2010-10-20 00:17:58 -0400393#else /* CONFIG_NFS_V4_1 */
394
Andy Adamson974cec82010-10-20 00:18:02 -0400395static inline void pnfs_destroy_all_layouts(struct nfs_client *clp)
396{
397}
398
Benny Halevye5e94012010-10-20 00:18:01 -0400399static inline void pnfs_destroy_layout(struct nfs_inode *nfsi)
400{
401}
402
403static inline struct pnfs_layout_segment *
Trond Myklebust9369a432012-09-18 20:57:08 -0400404pnfs_get_lseg(struct pnfs_layout_segment *lseg)
Fred Isamand684d2a2011-03-01 01:34:13 +0000405{
406 return NULL;
407}
408
Trond Myklebust9369a432012-09-18 20:57:08 -0400409static inline void pnfs_put_lseg(struct pnfs_layout_segment *lseg)
Fred Isamand684d2a2011-03-01 01:34:13 +0000410{
411}
412
Benny Halevycbe82602011-05-22 19:52:37 +0300413static inline int pnfs_return_layout(struct inode *ino)
414{
415 return 0;
416}
417
Trond Myklebust24028672013-03-20 13:23:33 -0400418static inline int pnfs_commit_and_return_layout(struct inode *inode)
419{
420 return 0;
421}
422
Fred Isamanf7e89172011-01-06 11:36:32 +0000423static inline bool
Benny Halevy8a1636c2010-07-14 15:43:57 -0400424pnfs_ld_layoutret_on_setattr(struct inode *inode)
425{
426 return false;
427}
428
429static inline bool
Fred Isamanf7e89172011-01-06 11:36:32 +0000430pnfs_roc(struct inode *ino)
431{
432 return false;
433}
434
435static inline void
436pnfs_roc_release(struct inode *ino)
437{
438}
439
440static inline void
441pnfs_roc_set_barrier(struct inode *ino, u32 barrier)
442{
443}
444
445static inline bool
Trond Myklebust7fdab062012-09-20 20:15:57 -0400446pnfs_roc_drain(struct inode *ino, u32 *barrier, struct rpc_task *task)
Fred Isamanf7e89172011-01-06 11:36:32 +0000447{
448 return false;
449}
450
Benny Halevy738fd0f32011-07-30 20:52:36 -0400451static inline void set_pnfs_layoutdriver(struct nfs_server *s,
Trond Myklebusta00ed252011-07-31 16:39:04 -0400452 const struct nfs_fh *mntfh, u32 id)
Ricardo Labiaga85e174b2010-10-20 00:17:58 -0400453{
454}
455
456static inline void unset_pnfs_layoutdriver(struct nfs_server *s)
457{
458}
459
Fred Isamana861a1e2011-03-23 13:27:51 +0000460static inline int
Fred Isamanea2cf222012-04-20 14:47:53 -0400461pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how,
462 struct nfs_commit_info *cinfo)
Fred Isamana861a1e2011-03-23 13:27:51 +0000463{
464 return PNFS_NOT_ATTEMPTED;
465}
466
Fred Isamanea2cf222012-04-20 14:47:53 -0400467static inline struct pnfs_ds_commit_info *
468pnfs_get_ds_info(struct inode *inode)
469{
470 return NULL;
471}
472
Trond Myklebust8dd37752012-03-15 17:16:40 -0400473static inline bool
Fred Isamanea2cf222012-04-20 14:47:53 -0400474pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg,
475 struct nfs_commit_info *cinfo)
Fred Isamana861a1e2011-03-23 13:27:51 +0000476{
Trond Myklebust8dd37752012-03-15 17:16:40 -0400477 return false;
Fred Isamana861a1e2011-03-23 13:27:51 +0000478}
479
Trond Myklebust8dd37752012-03-15 17:16:40 -0400480static inline bool
Fred Isamanea2cf222012-04-20 14:47:53 -0400481pnfs_clear_request_commit(struct nfs_page *req, struct nfs_commit_info *cinfo)
Fred Isamana861a1e2011-03-23 13:27:51 +0000482{
Trond Myklebust8dd37752012-03-15 17:16:40 -0400483 return false;
Fred Isamand6d6dc72012-03-08 17:29:35 -0500484}
485
486static inline int
Fred Isamanea2cf222012-04-20 14:47:53 -0400487pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo,
488 int max)
Fred Isamand6d6dc72012-03-08 17:29:35 -0500489{
490 return 0;
Fred Isamana861a1e2011-03-23 13:27:51 +0000491}
492
Fred Isaman1763da12012-04-20 14:47:57 -0400493static inline void
494pnfs_recover_commit_reqs(struct inode *inode, struct list_head *list,
495 struct nfs_commit_info *cinfo)
496{
497}
498
Andy Adamsonef311532011-03-12 02:58:10 -0500499static inline int pnfs_layoutcommit_inode(struct inode *inode, bool sync)
Andy Adamson863a3c62011-03-23 13:27:54 +0000500{
501 return 0;
502}
Benny Halevy1775bc32011-05-20 13:47:33 +0200503
Andy Adamson82be4172012-05-23 05:02:35 -0400504static inline bool
505pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src,
506 struct nfs_server *nfss)
507{
508 return false;
509}
510
Trond Myklebustd8c951c2014-01-13 12:08:11 -0500511static inline bool
512pnfs_layoutcommit_outstanding(struct inode *inode)
513{
514 return false;
515}
516
517
Andy Adamson82be4172012-05-23 05:02:35 -0400518static inline struct nfs4_threshold *pnfs_mdsthreshold_alloc(void)
519{
520 return NULL;
521}
522
Ricardo Labiaga85e174b2010-10-20 00:17:58 -0400523#endif /* CONFIG_NFS_V4_1 */
524
525#endif /* FS_NFS_PNFS_H */