Ricardo Labiaga | 85e174b | 2010-10-20 00:17:58 -0400 | [diff] [blame] | 1 | /* |
| 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 Halevy | 45df3c8 | 2011-05-05 08:28:46 +0300 | [diff] [blame] | 33 | #include <linux/nfs_fs.h> |
Fred Isaman | 94ad1c8 | 2011-03-01 01:34:14 +0000 | [diff] [blame] | 34 | #include <linux/nfs_page.h> |
Weston Andros Adamson | e6cf82d | 2014-07-17 20:42:18 -0400 | [diff] [blame] | 35 | #include <linux/workqueue.h> |
Fred Isaman | 94ad1c8 | 2011-03-01 01:34:14 +0000 | [diff] [blame] | 36 | |
Fred Isaman | 4541d16 | 2011-01-06 11:36:23 +0000 | [diff] [blame] | 37 | enum { |
| 38 | NFS_LSEG_VALID = 0, /* cleared when lseg is recalled/returned */ |
Fred Isaman | f7e8917 | 2011-01-06 11:36:32 +0000 | [diff] [blame] | 39 | NFS_LSEG_ROC, /* roc bit received from server */ |
Peng Tao | a9bae56 | 2011-07-30 20:52:33 -0400 | [diff] [blame] | 40 | NFS_LSEG_LAYOUTCOMMIT, /* layoutcommit bit set for layoutcommit */ |
Peng Tao | 016256d | 2014-09-06 00:53:23 +0800 | [diff] [blame] | 41 | NFS_LSEG_LAYOUTRETURN, /* layoutreturn bit set for layoutreturn */ |
Fred Isaman | 4541d16 | 2011-01-06 11:36:23 +0000 | [diff] [blame] | 42 | }; |
| 43 | |
Peng Tao | 875ae06 | 2014-05-29 21:06:57 +0800 | [diff] [blame] | 44 | /* Individual ip address */ |
| 45 | struct nfs4_pnfs_ds_addr { |
| 46 | struct sockaddr_storage da_addr; |
| 47 | size_t da_addrlen; |
| 48 | struct list_head da_node; /* nfs4_pnfs_dev_hlist dev_dslist */ |
| 49 | char *da_remotestr; /* human readable addr+port */ |
| 50 | }; |
| 51 | |
| 52 | struct nfs4_pnfs_ds { |
| 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; |
| 57 | atomic_t ds_count; |
| 58 | unsigned long ds_state; |
| 59 | #define NFS4DS_CONNECTING 0 /* ds is establishing connection */ |
Ricardo Labiaga | 85e174b | 2010-10-20 00:17:58 -0400 | [diff] [blame] | 60 | }; |
| 61 | |
Andy Adamson | 974cec8 | 2010-10-20 00:18:02 -0400 | [diff] [blame] | 62 | struct pnfs_layout_segment { |
Fred Isaman | 566052c | 2011-01-06 11:36:20 +0000 | [diff] [blame] | 63 | struct list_head pls_list; |
Peng Tao | a9bae56 | 2011-07-30 20:52:33 -0400 | [diff] [blame] | 64 | struct list_head pls_lc_list; |
Fred Isaman | 566052c | 2011-01-06 11:36:20 +0000 | [diff] [blame] | 65 | struct pnfs_layout_range pls_range; |
Fred Isaman | 4541d16 | 2011-01-06 11:36:23 +0000 | [diff] [blame] | 66 | atomic_t pls_refcount; |
Jeff Layton | 6675528 | 2016-05-17 12:28:40 -0400 | [diff] [blame] | 67 | u32 pls_seq; |
Fred Isaman | 4541d16 | 2011-01-06 11:36:23 +0000 | [diff] [blame] | 68 | unsigned long pls_flags; |
Fred Isaman | 566052c | 2011-01-06 11:36:20 +0000 | [diff] [blame] | 69 | struct pnfs_layout_hdr *pls_layout; |
Weston Andros Adamson | e6cf82d | 2014-07-17 20:42:18 -0400 | [diff] [blame] | 70 | struct work_struct pls_work; |
Andy Adamson | 974cec8 | 2010-10-20 00:18:02 -0400 | [diff] [blame] | 71 | }; |
| 72 | |
Andy Adamson | 64419a9 | 2011-03-01 01:34:16 +0000 | [diff] [blame] | 73 | enum pnfs_try_status { |
| 74 | PNFS_ATTEMPTED = 0, |
| 75 | PNFS_NOT_ATTEMPTED = 1, |
Peng Tao | ceb11e1 | 2014-11-10 08:35:38 +0800 | [diff] [blame] | 76 | PNFS_TRY_AGAIN = 2, |
Andy Adamson | 64419a9 | 2011-03-01 01:34:16 +0000 | [diff] [blame] | 77 | }; |
| 78 | |
Ricardo Labiaga | 85e174b | 2010-10-20 00:17:58 -0400 | [diff] [blame] | 79 | #ifdef CONFIG_NFS_V4_1 |
| 80 | |
| 81 | #define LAYOUT_NFSV4_1_MODULE_PREFIX "nfs-layouttype4" |
| 82 | |
Peng Tao | 39280a5 | 2014-05-30 18:15:55 +0800 | [diff] [blame] | 83 | /* |
| 84 | * Default data server connection timeout and retrans vaules. |
| 85 | * Set by module parameters dataserver_timeo and dataserver_retrans. |
| 86 | */ |
| 87 | #define NFS4_DEF_DS_TIMEO 600 /* in tenths of a second */ |
| 88 | #define NFS4_DEF_DS_RETRANS 5 |
| 89 | |
| 90 | /* error codes for internal use */ |
| 91 | #define NFS4ERR_RESET_TO_MDS 12001 |
| 92 | #define NFS4ERR_RESET_TO_PNFS 12002 |
| 93 | |
Benny Halevy | e5e9401 | 2010-10-20 00:18:01 -0400 | [diff] [blame] | 94 | enum { |
| 95 | NFS_LAYOUT_RO_FAILED = 0, /* get ro layout failed stop trying */ |
| 96 | NFS_LAYOUT_RW_FAILED, /* get rw layout failed stop trying */ |
Fred Isaman | 43f1b3d | 2011-01-06 11:36:30 +0000 | [diff] [blame] | 97 | NFS_LAYOUT_BULK_RECALL, /* bulk recall affecting layout */ |
Trond Myklebust | 2370abd | 2016-01-27 20:32:50 -0500 | [diff] [blame] | 98 | NFS_LAYOUT_RETURN, /* layoutreturn in progress */ |
| 99 | NFS_LAYOUT_RETURN_REQUESTED, /* Return this layout ASAP */ |
Christoph Hellwig | 47abade | 2014-08-21 11:09:22 -0500 | [diff] [blame] | 100 | NFS_LAYOUT_INVALID_STID, /* layout stateid id is invalid */ |
Peng Tao | 9bf8748 | 2014-08-22 17:37:41 +0800 | [diff] [blame] | 101 | NFS_LAYOUT_FIRST_LAYOUTGET, /* Serialize first layoutget */ |
Benny Halevy | e5e9401 | 2010-10-20 00:18:01 -0400 | [diff] [blame] | 102 | }; |
| 103 | |
Benny Halevy | 8a1636c | 2010-07-14 15:43:57 -0400 | [diff] [blame] | 104 | enum layoutdriver_policy_flags { |
Peng Tao | 88ac815 | 2014-09-12 11:04:10 +0800 | [diff] [blame] | 105 | /* Should the pNFS client commit and return the layout upon truncate to |
| 106 | * a smaller size */ |
Benny Halevy | 8a1636c | 2010-07-14 15:43:57 -0400 | [diff] [blame] | 107 | PNFS_LAYOUTRET_ON_SETATTR = 1 << 0, |
Boaz Harrosh | fe0fe83 | 2012-01-06 09:31:20 +0200 | [diff] [blame] | 108 | PNFS_LAYOUTRET_ON_ERROR = 1 << 1, |
Christoph Hellwig | 612aa98 | 2014-09-10 08:23:30 -0700 | [diff] [blame] | 109 | PNFS_READ_WHOLE_PAGE = 1 << 2, |
Benny Halevy | 8a1636c | 2010-07-14 15:43:57 -0400 | [diff] [blame] | 110 | }; |
| 111 | |
Benny Halevy | 1775bc3 | 2011-05-20 13:47:33 +0200 | [diff] [blame] | 112 | struct nfs4_deviceid_node; |
| 113 | |
Ricardo Labiaga | 85e174b | 2010-10-20 00:17:58 -0400 | [diff] [blame] | 114 | /* Per-layout driver specific registration structure */ |
| 115 | struct pnfs_layoutdriver_type { |
Fred Isaman | 02c35fc | 2010-10-20 00:17:59 -0400 | [diff] [blame] | 116 | struct list_head pnfs_tblid; |
| 117 | const u32 id; |
| 118 | const char *name; |
| 119 | struct module *owner; |
Benny Halevy | 8a1636c | 2010-07-14 15:43:57 -0400 | [diff] [blame] | 120 | unsigned flags; |
Christoph Hellwig | 661373b | 2014-09-02 21:27:57 -0700 | [diff] [blame] | 121 | unsigned max_deviceinfo_size; |
Benny Halevy | 636fb9c | 2011-05-22 19:51:33 +0300 | [diff] [blame] | 122 | |
Benny Halevy | 738fd0f3 | 2011-07-30 20:52:36 -0400 | [diff] [blame] | 123 | int (*set_layoutdriver) (struct nfs_server *, const struct nfs_fh *); |
| 124 | int (*clear_layoutdriver) (struct nfs_server *); |
| 125 | |
Benny Halevy | 636fb9c | 2011-05-22 19:51:33 +0300 | [diff] [blame] | 126 | struct pnfs_layout_hdr * (*alloc_layout_hdr) (struct inode *inode, gfp_t gfp_flags); |
| 127 | void (*free_layout_hdr) (struct pnfs_layout_hdr *); |
| 128 | |
Trond Myklebust | a75b9df | 2011-05-11 18:00:51 -0400 | [diff] [blame] | 129 | struct pnfs_layout_segment * (*alloc_lseg) (struct pnfs_layout_hdr *layoutid, struct nfs4_layoutget_res *lgr, gfp_t gfp_flags); |
Andy Adamson | b1f69b7 | 2010-10-20 00:18:03 -0400 | [diff] [blame] | 130 | void (*free_lseg) (struct pnfs_layout_segment *lseg); |
Trond Myklebust | 03772d2 | 2015-08-25 08:54:17 -0400 | [diff] [blame] | 131 | void (*add_lseg) (struct pnfs_layout_hdr *layoutid, |
| 132 | struct pnfs_layout_segment *lseg, |
| 133 | struct list_head *free_me); |
Fred Isaman | 94ad1c8 | 2011-03-01 01:34:14 +0000 | [diff] [blame] | 134 | |
Christoph Hellwig | c88953d | 2014-09-10 08:23:31 -0700 | [diff] [blame] | 135 | void (*return_range) (struct pnfs_layout_hdr *lo, |
| 136 | struct pnfs_layout_range *range); |
| 137 | |
Fred Isaman | 94ad1c8 | 2011-03-01 01:34:14 +0000 | [diff] [blame] | 138 | /* test for nfs page cache coalescing */ |
Trond Myklebust | 1751c36 | 2011-06-10 13:30:23 -0400 | [diff] [blame] | 139 | const struct nfs_pageio_ops *pg_read_ops; |
| 140 | const struct nfs_pageio_ops *pg_write_ops; |
Andy Adamson | 64419a9 | 2011-03-01 01:34:16 +0000 | [diff] [blame] | 141 | |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 142 | struct pnfs_ds_commit_info *(*get_ds_info) (struct inode *inode); |
Trond Myklebust | 8dd3775 | 2012-03-15 17:16:40 -0400 | [diff] [blame] | 143 | void (*mark_request_commit) (struct nfs_page *req, |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 144 | struct pnfs_layout_segment *lseg, |
Weston Andros Adamson | b57ff13 | 2014-09-05 18:20:21 -0400 | [diff] [blame] | 145 | struct nfs_commit_info *cinfo, |
| 146 | u32 ds_commit_idx); |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 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, |
| 150 | int max); |
Fred Isaman | 1763da1 | 2012-04-20 14:47:57 -0400 | [diff] [blame] | 151 | void (*recover_commit_reqs) (struct list_head *list, |
| 152 | struct nfs_commit_info *cinfo); |
Weston Andros Adamson | 02d1426 | 2014-07-17 20:42:17 -0400 | [diff] [blame] | 153 | struct nfs_page * (*search_commit_reqs)(struct nfs_commit_info *cinfo, |
| 154 | struct page *page); |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 155 | int (*commit_pagelist)(struct inode *inode, |
| 156 | struct list_head *mds_pages, |
| 157 | int how, |
| 158 | struct nfs_commit_info *cinfo); |
Fred Isaman | a861a1e | 2011-03-23 13:27:51 +0000 | [diff] [blame] | 159 | |
Trond Myklebust | 5bb89b4 | 2015-03-25 14:14:42 -0400 | [diff] [blame] | 160 | int (*sync)(struct inode *inode, bool datasync); |
| 161 | |
Andy Adamson | 64419a9 | 2011-03-01 01:34:16 +0000 | [diff] [blame] | 162 | /* |
| 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 |
| 165 | */ |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 166 | enum pnfs_try_status (*read_pagelist)(struct nfs_pgio_header *); |
| 167 | enum pnfs_try_status (*write_pagelist)(struct nfs_pgio_header *, int); |
Benny Halevy | 1775bc3 | 2011-05-20 13:47:33 +0200 | [diff] [blame] | 168 | |
| 169 | void (*free_deviceid_node) (struct nfs4_deviceid_node *); |
Christoph Hellwig | 661373b | 2014-09-02 21:27:57 -0700 | [diff] [blame] | 170 | struct nfs4_deviceid_node * (*alloc_deviceid_node) |
| 171 | (struct nfs_server *server, struct pnfs_device *pdev, |
| 172 | gfp_t gfp_flags); |
Andy Adamson | 04a5554 | 2011-05-22 19:53:10 +0300 | [diff] [blame] | 173 | |
| 174 | void (*encode_layoutreturn) (struct pnfs_layout_hdr *layoutid, |
| 175 | struct xdr_stream *xdr, |
| 176 | const struct nfs4_layoutreturn_args *args); |
Benny Halevy | ac7db72 | 2011-05-22 19:53:48 +0300 | [diff] [blame] | 177 | |
Andy Adamson | db29c08 | 2011-07-30 20:52:38 -0400 | [diff] [blame] | 178 | void (*cleanup_layoutcommit) (struct nfs4_layoutcommit_data *data); |
Christoph Hellwig | 5f919c9 | 2014-08-21 11:09:25 -0500 | [diff] [blame] | 179 | int (*prepare_layoutcommit) (struct nfs4_layoutcommit_args *args); |
| 180 | void (*encode_layoutcommit) (struct pnfs_layout_hdr *lo, |
Benny Halevy | ac7db72 | 2011-05-22 19:53:48 +0300 | [diff] [blame] | 181 | struct xdr_stream *xdr, |
| 182 | const struct nfs4_layoutcommit_args *args); |
Peng Tao | 8733408 | 2015-06-23 19:51:57 +0800 | [diff] [blame] | 183 | int (*prepare_layoutstats) (struct nfs42_layoutstat_args *args); |
| 184 | void (*cleanup_layoutstats) (struct nfs42_layoutstat_data *data); |
Ricardo Labiaga | 85e174b | 2010-10-20 00:17:58 -0400 | [diff] [blame] | 185 | }; |
| 186 | |
Benny Halevy | e5e9401 | 2010-10-20 00:18:01 -0400 | [diff] [blame] | 187 | struct pnfs_layout_hdr { |
Fred Isaman | cc6e534 | 2011-01-06 11:36:28 +0000 | [diff] [blame] | 188 | atomic_t plh_refcount; |
Trond Myklebust | 82714bd | 2015-08-25 08:41:24 -0400 | [diff] [blame] | 189 | atomic_t plh_outstanding; /* number of RPCs out */ |
Fred Isaman | b7edfaa | 2011-01-06 11:36:21 +0000 | [diff] [blame] | 190 | struct list_head plh_layouts; /* other client layouts */ |
Trond Myklebust | fd9a8d7 | 2013-02-12 09:48:42 -0500 | [diff] [blame] | 191 | struct list_head plh_bulk_destroy; |
Fred Isaman | b7edfaa | 2011-01-06 11:36:21 +0000 | [diff] [blame] | 192 | struct list_head plh_segs; /* layout segments list */ |
Fred Isaman | f7e8917 | 2011-01-06 11:36:32 +0000 | [diff] [blame] | 193 | unsigned long plh_block_lgets; /* block LAYOUTGET if >0 */ |
Trond Myklebust | 25c7533 | 2012-09-18 17:01:12 -0400 | [diff] [blame] | 194 | unsigned long plh_retry_timestamp; |
Fred Isaman | 566052c | 2011-01-06 11:36:20 +0000 | [diff] [blame] | 195 | unsigned long plh_flags; |
Trond Myklebust | 82714bd | 2015-08-25 08:41:24 -0400 | [diff] [blame] | 196 | nfs4_stateid plh_stateid; |
| 197 | u32 plh_barrier; /* ignore lower seqids */ |
Jeff Layton | 3982a6a | 2016-05-17 12:28:41 -0400 | [diff] [blame] | 198 | u32 plh_return_seq; |
Peng Tao | 016256d | 2014-09-06 00:53:23 +0800 | [diff] [blame] | 199 | enum pnfs_iomode plh_return_iomode; |
Peng Tao | acff5880 | 2011-07-30 20:52:31 -0400 | [diff] [blame] | 200 | loff_t plh_lwb; /* last write byte for layoutcommit */ |
Peng Tao | 9fa4075 | 2011-07-30 20:52:32 -0400 | [diff] [blame] | 201 | struct rpc_cred *plh_lc_cred; /* layoutcommit cred */ |
Fred Isaman | b7edfaa | 2011-01-06 11:36:21 +0000 | [diff] [blame] | 202 | struct inode *plh_inode; |
Benny Halevy | e5e9401 | 2010-10-20 00:18:01 -0400 | [diff] [blame] | 203 | }; |
| 204 | |
Andy Adamson | b1f69b7 | 2010-10-20 00:18:03 -0400 | [diff] [blame] | 205 | struct pnfs_device { |
| 206 | struct nfs4_deviceid dev_id; |
| 207 | unsigned int layout_type; |
| 208 | unsigned int mincount; |
Andy Adamson | f1c097b | 2013-06-25 19:02:53 -0400 | [diff] [blame] | 209 | unsigned int maxcount; /* gdia_maxcount */ |
Andy Adamson | b1f69b7 | 2010-10-20 00:18:03 -0400 | [diff] [blame] | 210 | struct page **pages; |
Andy Adamson | b1f69b7 | 2010-10-20 00:18:03 -0400 | [diff] [blame] | 211 | unsigned int pgbase; |
Andy Adamson | f1c097b | 2013-06-25 19:02:53 -0400 | [diff] [blame] | 212 | unsigned int pglen; /* reply buffer length */ |
Trond Myklebust | df52699 | 2015-03-09 14:48:32 -0400 | [diff] [blame] | 213 | unsigned char nocache : 1;/* May not be cached */ |
Andy Adamson | b1f69b7 | 2010-10-20 00:18:03 -0400 | [diff] [blame] | 214 | }; |
| 215 | |
Andy Adamson | 7f11d8d | 2011-07-30 20:52:35 -0400 | [diff] [blame] | 216 | #define NFS4_PNFS_GETDEVLIST_MAXNUM 16 |
| 217 | |
| 218 | struct pnfs_devicelist { |
| 219 | unsigned int eof; |
| 220 | unsigned int num_devs; |
| 221 | struct nfs4_deviceid dev_id[NFS4_PNFS_GETDEVLIST_MAXNUM]; |
| 222 | }; |
| 223 | |
Fred Isaman | 02c35fc | 2010-10-20 00:17:59 -0400 | [diff] [blame] | 224 | extern int pnfs_register_layoutdriver(struct pnfs_layoutdriver_type *); |
| 225 | extern void pnfs_unregister_layoutdriver(struct pnfs_layoutdriver_type *); |
| 226 | |
Andy Adamson | b1f69b7 | 2010-10-20 00:18:03 -0400 | [diff] [blame] | 227 | /* nfs4proc.c */ |
| 228 | extern int nfs4_proc_getdeviceinfo(struct nfs_server *server, |
Trond Myklebust | cd5875f | 2013-05-20 11:42:54 -0400 | [diff] [blame] | 229 | struct pnfs_device *dev, |
| 230 | struct rpc_cred *cred); |
Jeff Layton | 183d9e7 | 2016-05-17 12:28:47 -0400 | [diff] [blame] | 231 | extern struct pnfs_layout_segment* nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout, gfp_t gfp_flags); |
Peng Tao | 6c16605 | 2014-11-17 09:30:40 +0800 | [diff] [blame] | 232 | extern int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp, bool sync); |
Andy Adamson | b1f69b7 | 2010-10-20 00:18:03 -0400 | [diff] [blame] | 233 | |
| 234 | /* pnfs.c */ |
Trond Myklebust | 70c3bd2 | 2012-09-18 20:51:13 -0400 | [diff] [blame] | 235 | void pnfs_get_layout_hdr(struct pnfs_layout_hdr *lo); |
Trond Myklebust | 9369a43 | 2012-09-18 20:57:08 -0400 | [diff] [blame] | 236 | void pnfs_put_lseg(struct pnfs_layout_segment *lseg); |
Trond Myklebust | 6543f80 | 2014-10-08 16:39:12 -0400 | [diff] [blame] | 237 | void pnfs_put_lseg_locked(struct pnfs_layout_segment *lseg); |
Trond Myklebust | 1751c36 | 2011-06-10 13:30:23 -0400 | [diff] [blame] | 238 | |
Benny Halevy | 738fd0f3 | 2011-07-30 20:52:36 -0400 | [diff] [blame] | 239 | void set_pnfs_layoutdriver(struct nfs_server *, const struct nfs_fh *, u32); |
Ricardo Labiaga | 85e174b | 2010-10-20 00:17:58 -0400 | [diff] [blame] | 240 | void unset_pnfs_layoutdriver(struct nfs_server *); |
Trond Myklebust | d8007d4 | 2011-06-10 13:30:23 -0400 | [diff] [blame] | 241 | void pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *, struct nfs_page *); |
Trond Myklebust | 493292d | 2011-07-13 15:58:28 -0400 | [diff] [blame] | 242 | int pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc); |
Peng Tao | 6296556 | 2012-09-25 14:55:57 +0800 | [diff] [blame] | 243 | void pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio, |
| 244 | struct nfs_page *req, u64 wb_size); |
Weston Andros Adamson | 180bb5e | 2014-09-10 15:48:01 -0400 | [diff] [blame] | 245 | void pnfs_generic_pg_cleanup(struct nfs_pageio_descriptor *); |
Trond Myklebust | dce8129 | 2011-07-13 15:59:19 -0400 | [diff] [blame] | 246 | int pnfs_generic_pg_writepages(struct nfs_pageio_descriptor *desc); |
Weston Andros Adamson | b4fdac1 | 2014-05-15 11:56:43 -0400 | [diff] [blame] | 247 | size_t pnfs_generic_pg_test(struct nfs_pageio_descriptor *pgio, |
| 248 | struct nfs_page *prev, struct nfs_page *req); |
Peng Tao | 1b0ae06 | 2011-09-22 21:50:12 -0400 | [diff] [blame] | 249 | void pnfs_set_lo_fail(struct pnfs_layout_segment *lseg); |
Trond Myklebust | a0b0a6e | 2012-09-17 17:12:15 -0400 | [diff] [blame] | 250 | struct pnfs_layout_segment *pnfs_layout_process(struct nfs4_layoutget *lgp); |
Fred Isaman | 43f1b3d | 2011-01-06 11:36:30 +0000 | [diff] [blame] | 251 | void pnfs_free_lseg_list(struct list_head *tmp_list); |
Benny Halevy | e5e9401 | 2010-10-20 00:18:01 -0400 | [diff] [blame] | 252 | void pnfs_destroy_layout(struct nfs_inode *); |
Andy Adamson | 974cec8 | 2010-10-20 00:18:02 -0400 | [diff] [blame] | 253 | void pnfs_destroy_all_layouts(struct nfs_client *); |
Trond Myklebust | fd9a8d7 | 2013-02-12 09:48:42 -0500 | [diff] [blame] | 254 | int pnfs_destroy_layouts_byfsid(struct nfs_client *clp, |
| 255 | struct nfs_fsid *fsid, |
| 256 | bool is_recall); |
| 257 | int pnfs_destroy_layouts_byclid(struct nfs_client *clp, |
| 258 | bool is_recall); |
Trond Myklebust | 70c3bd2 | 2012-09-18 20:51:13 -0400 | [diff] [blame] | 259 | void pnfs_put_layout_hdr(struct pnfs_layout_hdr *lo); |
Fred Isaman | 43f1b3d | 2011-01-06 11:36:30 +0000 | [diff] [blame] | 260 | void pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo, |
| 261 | const nfs4_stateid *new, |
| 262 | bool update_barrier); |
Trond Myklebust | 49a8506 | 2012-09-18 20:43:31 -0400 | [diff] [blame] | 263 | int pnfs_mark_matching_lsegs_invalid(struct pnfs_layout_hdr *lo, |
Fred Isaman | 43f1b3d | 2011-01-06 11:36:30 +0000 | [diff] [blame] | 264 | struct list_head *tmp_list, |
Jeff Layton | 6d597e1 | 2016-05-17 12:28:42 -0400 | [diff] [blame] | 265 | const struct pnfs_layout_range *recall_range, |
| 266 | u32 seq); |
Trond Myklebust | 1033555 | 2016-01-04 11:23:52 -0500 | [diff] [blame] | 267 | int pnfs_mark_matching_lsegs_return(struct pnfs_layout_hdr *lo, |
Trond Myklebust | fc7ff36 | 2015-12-28 10:28:59 -0500 | [diff] [blame] | 268 | struct list_head *tmp_list, |
Jeff Layton | 6d597e1 | 2016-05-17 12:28:42 -0400 | [diff] [blame] | 269 | const struct pnfs_layout_range *recall_range, |
| 270 | u32 seq); |
Fred Isaman | f7e8917 | 2011-01-06 11:36:32 +0000 | [diff] [blame] | 271 | bool pnfs_roc(struct inode *ino); |
| 272 | void pnfs_roc_release(struct inode *ino); |
| 273 | void pnfs_roc_set_barrier(struct inode *ino, u32 barrier); |
Trond Myklebust | 4ff376f | 2015-08-18 23:23:21 -0500 | [diff] [blame] | 274 | void pnfs_roc_get_barrier(struct inode *ino, u32 *barrier); |
Peng Tao | 500d701 | 2015-09-22 11:35:22 +0800 | [diff] [blame] | 275 | bool pnfs_wait_on_layoutreturn(struct inode *ino, struct rpc_task *task); |
Trond Myklebust | 67af761 | 2015-03-25 20:40:38 -0400 | [diff] [blame] | 276 | void pnfs_set_layoutcommit(struct inode *, struct pnfs_layout_segment *, loff_t); |
Andy Adamson | db29c08 | 2011-07-30 20:52:38 -0400 | [diff] [blame] | 277 | void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data); |
Andy Adamson | ef31153 | 2011-03-12 02:58:10 -0500 | [diff] [blame] | 278 | int pnfs_layoutcommit_inode(struct inode *inode, bool sync); |
Trond Myklebust | 5bb89b4 | 2015-03-25 14:14:42 -0400 | [diff] [blame] | 279 | int pnfs_generic_sync(struct inode *inode, bool datasync); |
| 280 | int pnfs_nfs_generic_sync(struct inode *inode, bool datasync); |
Benny Halevy | cbe8260 | 2011-05-22 19:52:37 +0300 | [diff] [blame] | 281 | int _pnfs_return_layout(struct inode *); |
Trond Myklebust | 2402867 | 2013-03-20 13:23:33 -0400 | [diff] [blame] | 282 | int pnfs_commit_and_return_layout(struct inode *); |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 283 | void pnfs_ld_write_done(struct nfs_pgio_header *); |
| 284 | void pnfs_ld_read_done(struct nfs_pgio_header *); |
Weston Andros Adamson | 1b1bc66 | 2016-04-01 11:42:28 -0400 | [diff] [blame] | 285 | void pnfs_read_resend_pnfs(struct nfs_pgio_header *); |
Andy Adamson | 7c24d94 | 2011-06-13 18:22:38 -0400 | [diff] [blame] | 286 | struct pnfs_layout_segment *pnfs_update_layout(struct inode *ino, |
| 287 | struct nfs_open_context *ctx, |
| 288 | loff_t pos, |
| 289 | u64 count, |
| 290 | enum pnfs_iomode iomode, |
Tom Haynes | c7d73af | 2016-05-25 07:31:14 -0700 | [diff] [blame] | 291 | bool strict_iomode, |
Andy Adamson | 7c24d94 | 2011-06-13 18:22:38 -0400 | [diff] [blame] | 292 | gfp_t gfp_flags); |
Tom Haynes | d67ae82 | 2014-12-11 17:02:04 -0500 | [diff] [blame] | 293 | void pnfs_clear_layoutreturn_waitbit(struct pnfs_layout_hdr *lo); |
Benny Halevy | e5e9401 | 2010-10-20 00:18:01 -0400 | [diff] [blame] | 294 | |
Trond Myklebust | 03772d2 | 2015-08-25 08:54:17 -0400 | [diff] [blame] | 295 | void pnfs_generic_layout_insert_lseg(struct pnfs_layout_hdr *lo, |
| 296 | struct pnfs_layout_segment *lseg, |
| 297 | bool (*is_after)(const struct pnfs_layout_range *lseg_range, |
| 298 | const struct pnfs_layout_range *old), |
| 299 | bool (*do_merge)(struct pnfs_layout_segment *lseg, |
| 300 | struct pnfs_layout_segment *old), |
| 301 | struct list_head *free_me); |
| 302 | |
Andy Adamson | c47abcf | 2011-06-15 17:52:40 -0400 | [diff] [blame] | 303 | void nfs4_deviceid_mark_client_invalid(struct nfs_client *clp); |
Weston Andros Adamson | 53113ad | 2014-06-09 11:48:38 -0400 | [diff] [blame] | 304 | int pnfs_read_done_resend_to_mds(struct nfs_pgio_header *); |
| 305 | int pnfs_write_done_resend_to_mds(struct nfs_pgio_header *); |
Andy Adamson | 82be417 | 2012-05-23 05:02:35 -0400 | [diff] [blame] | 306 | struct nfs4_threshold *pnfs_mdsthreshold_alloc(void); |
Peng Tao | 016256d | 2014-09-06 00:53:23 +0800 | [diff] [blame] | 307 | void pnfs_error_mark_layout_for_return(struct inode *inode, |
| 308 | struct pnfs_layout_segment *lseg); |
Andy Adamson | c47abcf | 2011-06-15 17:52:40 -0400 | [diff] [blame] | 309 | /* nfs4_deviceid_flags */ |
| 310 | enum { |
| 311 | NFS_DEVICEID_INVALID = 0, /* set when MDS clientid recalled */ |
Trond Myklebust | 1dfed27 | 2012-09-18 19:51:12 -0400 | [diff] [blame] | 312 | NFS_DEVICEID_UNAVAILABLE, /* device temporarily unavailable */ |
Trond Myklebust | df52699 | 2015-03-09 14:48:32 -0400 | [diff] [blame] | 313 | NFS_DEVICEID_NOCACHE, /* device may not be cached */ |
Andy Adamson | c47abcf | 2011-06-15 17:52:40 -0400 | [diff] [blame] | 314 | }; |
| 315 | |
Benny Halevy | a1eaecb | 2011-05-19 22:14:47 -0400 | [diff] [blame] | 316 | /* pnfs_dev.c */ |
| 317 | struct nfs4_deviceid_node { |
| 318 | struct hlist_node node; |
Weston Andros Adamson | 9e3bd4e | 2011-05-31 21:46:50 -0400 | [diff] [blame] | 319 | struct hlist_node tmpnode; |
Benny Halevy | 1775bc3 | 2011-05-20 13:47:33 +0200 | [diff] [blame] | 320 | const struct pnfs_layoutdriver_type *ld; |
Benny Halevy | a1eaecb | 2011-05-19 22:14:47 -0400 | [diff] [blame] | 321 | const struct nfs_client *nfs_client; |
Andy Adamson | c47abcf | 2011-06-15 17:52:40 -0400 | [diff] [blame] | 322 | unsigned long flags; |
Trond Myklebust | 1dfed27 | 2012-09-18 19:51:12 -0400 | [diff] [blame] | 323 | unsigned long timestamp_unavailable; |
Benny Halevy | a1eaecb | 2011-05-19 22:14:47 -0400 | [diff] [blame] | 324 | struct nfs4_deviceid deviceid; |
Trond Myklebust | 84a80f6 | 2015-03-09 15:23:35 -0400 | [diff] [blame] | 325 | struct rcu_head rcu; |
Benny Halevy | a1eaecb | 2011-05-19 22:14:47 -0400 | [diff] [blame] | 326 | atomic_t ref; |
| 327 | }; |
| 328 | |
Christoph Hellwig | 661373b | 2014-09-02 21:27:57 -0700 | [diff] [blame] | 329 | struct nfs4_deviceid_node * |
| 330 | nfs4_find_get_deviceid(struct nfs_server *server, |
| 331 | const struct nfs4_deviceid *id, struct rpc_cred *cred, |
| 332 | gfp_t gfp_mask); |
Benny Halevy | 35c8bb5 | 2011-05-24 18:04:02 +0300 | [diff] [blame] | 333 | void nfs4_delete_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *); |
Christoph Hellwig | 661373b | 2014-09-02 21:27:57 -0700 | [diff] [blame] | 334 | void nfs4_init_deviceid_node(struct nfs4_deviceid_node *, struct nfs_server *, |
Benny Halevy | a1eaecb | 2011-05-19 22:14:47 -0400 | [diff] [blame] | 335 | const struct nfs4_deviceid *); |
Benny Halevy | a1eaecb | 2011-05-19 22:14:47 -0400 | [diff] [blame] | 336 | bool nfs4_put_deviceid_node(struct nfs4_deviceid_node *); |
Trond Myklebust | 1dfed27 | 2012-09-18 19:51:12 -0400 | [diff] [blame] | 337 | void nfs4_mark_deviceid_unavailable(struct nfs4_deviceid_node *node); |
| 338 | bool nfs4_test_deviceid_unavailable(struct nfs4_deviceid_node *node); |
Benny Halevy | 1775bc3 | 2011-05-20 13:47:33 +0200 | [diff] [blame] | 339 | void nfs4_deviceid_purge_client(const struct nfs_client *); |
Benny Halevy | a1eaecb | 2011-05-19 22:14:47 -0400 | [diff] [blame] | 340 | |
Tom Haynes | f54bcf2 | 2014-12-11 15:34:59 -0500 | [diff] [blame] | 341 | /* pnfs_nfs.c */ |
| 342 | void pnfs_generic_clear_request_commit(struct nfs_page *req, |
| 343 | struct nfs_commit_info *cinfo); |
| 344 | void pnfs_generic_commit_release(void *calldata); |
| 345 | void pnfs_generic_prepare_to_resend_writes(struct nfs_commit_data *data); |
| 346 | void pnfs_generic_rw_release(void *data); |
| 347 | void pnfs_generic_recover_commit_reqs(struct list_head *dst, |
| 348 | struct nfs_commit_info *cinfo); |
| 349 | int pnfs_generic_commit_pagelist(struct inode *inode, |
| 350 | struct list_head *mds_pages, |
| 351 | int how, |
| 352 | struct nfs_commit_info *cinfo, |
| 353 | int (*initiate_commit)(struct nfs_commit_data *data, |
| 354 | int how)); |
| 355 | int pnfs_generic_scan_commit_lists(struct nfs_commit_info *cinfo, int max); |
| 356 | void pnfs_generic_write_commit_done(struct rpc_task *task, void *data); |
Peng Tao | 875ae06 | 2014-05-29 21:06:57 +0800 | [diff] [blame] | 357 | void nfs4_pnfs_ds_put(struct nfs4_pnfs_ds *ds); |
| 358 | struct nfs4_pnfs_ds *nfs4_pnfs_ds_add(struct list_head *dsaddrs, |
| 359 | gfp_t gfp_flags); |
Peng Tao | 5f01d95 | 2014-05-30 18:15:59 +0800 | [diff] [blame] | 360 | void nfs4_pnfs_v3_ds_connect_unload(void); |
Peng Tao | 7405f9e | 2014-05-29 21:06:58 +0800 | [diff] [blame] | 361 | void nfs4_pnfs_ds_connect(struct nfs_server *mds_srv, struct nfs4_pnfs_ds *ds, |
| 362 | struct nfs4_deviceid_node *devid, unsigned int timeo, |
Peng Tao | 5f01d95 | 2014-05-30 18:15:59 +0800 | [diff] [blame] | 363 | unsigned int retrans, u32 version, u32 minor_version, |
Peng Tao | 30626f9 | 2014-05-30 18:15:58 +0800 | [diff] [blame] | 364 | rpc_authflavor_t au_flavor); |
Peng Tao | 6b7f3cf | 2014-05-29 21:06:59 +0800 | [diff] [blame] | 365 | struct nfs4_pnfs_ds_addr *nfs4_decode_mp_ds_addr(struct net *net, |
| 366 | struct xdr_stream *xdr, |
| 367 | gfp_t gfp_flags); |
Tom Haynes | 338d00c | 2015-02-17 14:58:15 -0800 | [diff] [blame] | 368 | void pnfs_layout_mark_request_commit(struct nfs_page *req, |
| 369 | struct pnfs_layout_segment *lseg, |
| 370 | struct nfs_commit_info *cinfo, |
| 371 | u32 ds_commit_idx); |
Tom Haynes | f54bcf2 | 2014-12-11 15:34:59 -0500 | [diff] [blame] | 372 | |
Trond Myklebust | 40dd4b7 | 2015-01-24 13:54:37 -0500 | [diff] [blame] | 373 | static inline bool nfs_have_layout(struct inode *inode) |
| 374 | { |
| 375 | return NFS_I(inode)->layout != NULL; |
| 376 | } |
| 377 | |
Christoph Hellwig | 30ff060 | 2014-09-02 21:27:59 -0700 | [diff] [blame] | 378 | static inline struct nfs4_deviceid_node * |
| 379 | nfs4_get_deviceid(struct nfs4_deviceid_node *d) |
| 380 | { |
| 381 | atomic_inc(&d->ref); |
| 382 | return d; |
| 383 | } |
| 384 | |
Fred Isaman | d684d2a | 2011-03-01 01:34:13 +0000 | [diff] [blame] | 385 | static inline struct pnfs_layout_segment * |
Trond Myklebust | 9369a43 | 2012-09-18 20:57:08 -0400 | [diff] [blame] | 386 | pnfs_get_lseg(struct pnfs_layout_segment *lseg) |
Fred Isaman | d684d2a | 2011-03-01 01:34:13 +0000 | [diff] [blame] | 387 | { |
| 388 | if (lseg) { |
| 389 | atomic_inc(&lseg->pls_refcount); |
Peter Zijlstra | 4e857c5 | 2014-03-17 18:06:10 +0100 | [diff] [blame] | 390 | smp_mb__after_atomic(); |
Fred Isaman | d684d2a | 2011-03-01 01:34:13 +0000 | [diff] [blame] | 391 | } |
| 392 | return lseg; |
| 393 | } |
| 394 | |
Trond Myklebust | b20135d | 2015-12-31 09:28:06 -0500 | [diff] [blame] | 395 | static inline bool |
| 396 | pnfs_is_valid_lseg(struct pnfs_layout_segment *lseg) |
| 397 | { |
| 398 | return test_bit(NFS_LSEG_VALID, &lseg->pls_flags) != 0; |
| 399 | } |
| 400 | |
Benny Halevy | e5e9401 | 2010-10-20 00:18:01 -0400 | [diff] [blame] | 401 | /* Return true if a layout driver is being used for this mountpoint */ |
| 402 | static inline int pnfs_enabled_sb(struct nfs_server *nfss) |
| 403 | { |
| 404 | return nfss->pnfs_curr_ld != NULL; |
| 405 | } |
Ricardo Labiaga | 85e174b | 2010-10-20 00:17:58 -0400 | [diff] [blame] | 406 | |
Fred Isaman | a861a1e | 2011-03-23 13:27:51 +0000 | [diff] [blame] | 407 | static inline int |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 408 | pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how, |
| 409 | struct nfs_commit_info *cinfo) |
Fred Isaman | a861a1e | 2011-03-23 13:27:51 +0000 | [diff] [blame] | 410 | { |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 411 | if (cinfo->ds == NULL || cinfo->ds->ncommitting == 0) |
Fred Isaman | a861a1e | 2011-03-23 13:27:51 +0000 | [diff] [blame] | 412 | return PNFS_NOT_ATTEMPTED; |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 413 | return NFS_SERVER(inode)->pnfs_curr_ld->commit_pagelist(inode, mds_pages, how, cinfo); |
| 414 | } |
| 415 | |
| 416 | static inline struct pnfs_ds_commit_info * |
| 417 | pnfs_get_ds_info(struct inode *inode) |
| 418 | { |
| 419 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; |
| 420 | |
| 421 | if (ld == NULL || ld->get_ds_info == NULL) |
| 422 | return NULL; |
| 423 | return ld->get_ds_info(inode); |
Fred Isaman | a861a1e | 2011-03-23 13:27:51 +0000 | [diff] [blame] | 424 | } |
| 425 | |
Tom Haynes | f54bcf2 | 2014-12-11 15:34:59 -0500 | [diff] [blame] | 426 | static inline void |
| 427 | pnfs_generic_mark_devid_invalid(struct nfs4_deviceid_node *node) |
| 428 | { |
| 429 | set_bit(NFS_DEVICEID_INVALID, &node->flags); |
| 430 | } |
| 431 | |
Trond Myklebust | 8dd3775 | 2012-03-15 17:16:40 -0400 | [diff] [blame] | 432 | static inline bool |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 433 | pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, |
Weston Andros Adamson | b57ff13 | 2014-09-05 18:20:21 -0400 | [diff] [blame] | 434 | struct nfs_commit_info *cinfo, u32 ds_commit_idx) |
Fred Isaman | a861a1e | 2011-03-23 13:27:51 +0000 | [diff] [blame] | 435 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 436 | struct inode *inode = d_inode(req->wb_context->dentry); |
Trond Myklebust | 8dd3775 | 2012-03-15 17:16:40 -0400 | [diff] [blame] | 437 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; |
Fred Isaman | a861a1e | 2011-03-23 13:27:51 +0000 | [diff] [blame] | 438 | |
Trond Myklebust | 8dd3775 | 2012-03-15 17:16:40 -0400 | [diff] [blame] | 439 | if (lseg == NULL || ld->mark_request_commit == NULL) |
| 440 | return false; |
Weston Andros Adamson | b57ff13 | 2014-09-05 18:20:21 -0400 | [diff] [blame] | 441 | ld->mark_request_commit(req, lseg, cinfo, ds_commit_idx); |
Trond Myklebust | 8dd3775 | 2012-03-15 17:16:40 -0400 | [diff] [blame] | 442 | return true; |
Fred Isaman | a861a1e | 2011-03-23 13:27:51 +0000 | [diff] [blame] | 443 | } |
| 444 | |
Trond Myklebust | 8dd3775 | 2012-03-15 17:16:40 -0400 | [diff] [blame] | 445 | static inline bool |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 446 | pnfs_clear_request_commit(struct nfs_page *req, struct nfs_commit_info *cinfo) |
Fred Isaman | a861a1e | 2011-03-23 13:27:51 +0000 | [diff] [blame] | 447 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 448 | struct inode *inode = d_inode(req->wb_context->dentry); |
Trond Myklebust | 8dd3775 | 2012-03-15 17:16:40 -0400 | [diff] [blame] | 449 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; |
Fred Isaman | d6d6dc7 | 2012-03-08 17:29:35 -0500 | [diff] [blame] | 450 | |
Trond Myklebust | 8dd3775 | 2012-03-15 17:16:40 -0400 | [diff] [blame] | 451 | if (ld == NULL || ld->clear_request_commit == NULL) |
| 452 | return false; |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 453 | ld->clear_request_commit(req, cinfo); |
Trond Myklebust | 8dd3775 | 2012-03-15 17:16:40 -0400 | [diff] [blame] | 454 | return true; |
Fred Isaman | d6d6dc7 | 2012-03-08 17:29:35 -0500 | [diff] [blame] | 455 | } |
| 456 | |
| 457 | static inline int |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 458 | pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo, |
| 459 | int max) |
Fred Isaman | d6d6dc7 | 2012-03-08 17:29:35 -0500 | [diff] [blame] | 460 | { |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 461 | if (cinfo->ds == NULL || cinfo->ds->nwritten == 0) |
Fred Isaman | d6d6dc7 | 2012-03-08 17:29:35 -0500 | [diff] [blame] | 462 | return 0; |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 463 | else |
| 464 | return NFS_SERVER(inode)->pnfs_curr_ld->scan_commit_lists(cinfo, max); |
Fred Isaman | a861a1e | 2011-03-23 13:27:51 +0000 | [diff] [blame] | 465 | } |
| 466 | |
Weston Andros Adamson | 02d1426 | 2014-07-17 20:42:17 -0400 | [diff] [blame] | 467 | static inline struct nfs_page * |
| 468 | pnfs_search_commit_reqs(struct inode *inode, struct nfs_commit_info *cinfo, |
| 469 | struct page *page) |
| 470 | { |
| 471 | struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; |
| 472 | |
| 473 | if (ld == NULL || ld->search_commit_reqs == NULL) |
| 474 | return NULL; |
| 475 | return ld->search_commit_reqs(cinfo, page); |
| 476 | } |
| 477 | |
Benny Halevy | 8a1636c | 2010-07-14 15:43:57 -0400 | [diff] [blame] | 478 | /* Should the pNFS client commit and return the layout upon a setattr */ |
| 479 | static inline bool |
| 480 | pnfs_ld_layoutret_on_setattr(struct inode *inode) |
| 481 | { |
| 482 | if (!pnfs_enabled_sb(NFS_SERVER(inode))) |
| 483 | return false; |
| 484 | return NFS_SERVER(inode)->pnfs_curr_ld->flags & |
| 485 | PNFS_LAYOUTRET_ON_SETATTR; |
| 486 | } |
| 487 | |
Trond Myklebust | d8c951c | 2014-01-13 12:08:11 -0500 | [diff] [blame] | 488 | static inline bool |
Christoph Hellwig | 612aa98 | 2014-09-10 08:23:30 -0700 | [diff] [blame] | 489 | pnfs_ld_read_whole_page(struct inode *inode) |
| 490 | { |
| 491 | if (!pnfs_enabled_sb(NFS_SERVER(inode))) |
| 492 | return false; |
| 493 | return NFS_SERVER(inode)->pnfs_curr_ld->flags & PNFS_READ_WHOLE_PAGE; |
| 494 | } |
| 495 | |
Trond Myklebust | 5bb89b4 | 2015-03-25 14:14:42 -0400 | [diff] [blame] | 496 | static inline int |
| 497 | pnfs_sync_inode(struct inode *inode, bool datasync) |
| 498 | { |
| 499 | if (!pnfs_enabled_sb(NFS_SERVER(inode))) |
| 500 | return 0; |
| 501 | return NFS_SERVER(inode)->pnfs_curr_ld->sync(inode, datasync); |
| 502 | } |
| 503 | |
Christoph Hellwig | 612aa98 | 2014-09-10 08:23:30 -0700 | [diff] [blame] | 504 | static inline bool |
Trond Myklebust | d8c951c | 2014-01-13 12:08:11 -0500 | [diff] [blame] | 505 | pnfs_layoutcommit_outstanding(struct inode *inode) |
| 506 | { |
| 507 | struct nfs_inode *nfsi = NFS_I(inode); |
| 508 | |
| 509 | return test_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags) != 0 || |
| 510 | test_bit(NFS_INO_LAYOUTCOMMITTING, &nfsi->flags) != 0; |
| 511 | } |
| 512 | |
Benny Halevy | cbe8260 | 2011-05-22 19:52:37 +0300 | [diff] [blame] | 513 | static inline int pnfs_return_layout(struct inode *ino) |
| 514 | { |
| 515 | struct nfs_inode *nfsi = NFS_I(ino); |
| 516 | struct nfs_server *nfss = NFS_SERVER(ino); |
| 517 | |
| 518 | if (pnfs_enabled_sb(nfss) && nfsi->layout) |
| 519 | return _pnfs_return_layout(ino); |
| 520 | |
| 521 | return 0; |
| 522 | } |
| 523 | |
Andy Adamson | 82be417 | 2012-05-23 05:02:35 -0400 | [diff] [blame] | 524 | static inline bool |
| 525 | pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src, |
| 526 | struct nfs_server *nfss) |
| 527 | { |
Fred Isaman | fb47ddc | 2012-06-07 11:42:12 -0400 | [diff] [blame] | 528 | return (dst && src && src->bm != 0 && nfss->pnfs_curr_ld && |
Andy Adamson | 82be417 | 2012-05-23 05:02:35 -0400 | [diff] [blame] | 529 | nfss->pnfs_curr_ld->id == src->l_type); |
| 530 | } |
| 531 | |
Trond Myklebust | 0762ed2 | 2015-08-25 17:38:25 -0400 | [diff] [blame] | 532 | static inline u64 |
| 533 | pnfs_calc_offset_end(u64 offset, u64 len) |
| 534 | { |
| 535 | if (len == NFS4_MAX_UINT64 || len >= NFS4_MAX_UINT64 - offset) |
| 536 | return NFS4_MAX_UINT64; |
| 537 | return offset + len - 1; |
| 538 | } |
| 539 | |
| 540 | static inline u64 |
| 541 | pnfs_calc_offset_length(u64 offset, u64 end) |
| 542 | { |
| 543 | if (end == NFS4_MAX_UINT64 || end <= offset) |
| 544 | return NFS4_MAX_UINT64; |
| 545 | return 1 + end - offset; |
| 546 | } |
| 547 | |
Trond Myklebust | 0654cc7 | 2015-12-28 11:48:14 -0500 | [diff] [blame] | 548 | /** |
| 549 | * pnfs_mark_layout_returned_if_empty - marks the layout as returned |
| 550 | * @lo: layout header |
| 551 | * |
| 552 | * Note: Caller must hold inode->i_lock |
| 553 | */ |
| 554 | static inline void |
| 555 | pnfs_mark_layout_returned_if_empty(struct pnfs_layout_hdr *lo) |
| 556 | { |
| 557 | if (list_empty(&lo->plh_segs)) |
| 558 | set_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags); |
| 559 | } |
| 560 | |
Trond Myklebust | e144e53 | 2016-01-04 12:52:53 -0500 | [diff] [blame] | 561 | static inline void |
| 562 | pnfs_copy_range(struct pnfs_layout_range *dst, |
| 563 | const struct pnfs_layout_range *src) |
| 564 | { |
| 565 | memcpy(dst, src, sizeof(*dst)); |
| 566 | } |
| 567 | |
Trond Myklebust | bbf58bf | 2015-08-24 20:39:18 -0400 | [diff] [blame] | 568 | extern unsigned int layoutstats_timer; |
| 569 | |
Trond Myklebust | 6f00866 | 2012-03-20 14:12:46 -0400 | [diff] [blame] | 570 | #ifdef NFS_DEBUG |
| 571 | void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id); |
| 572 | #else |
| 573 | static inline void nfs4_print_deviceid(const struct nfs4_deviceid *dev_id) |
| 574 | { |
| 575 | } |
Trond Myklebust | bbf58bf | 2015-08-24 20:39:18 -0400 | [diff] [blame] | 576 | |
Trond Myklebust | 6f00866 | 2012-03-20 14:12:46 -0400 | [diff] [blame] | 577 | #endif /* NFS_DEBUG */ |
Ricardo Labiaga | 85e174b | 2010-10-20 00:17:58 -0400 | [diff] [blame] | 578 | #else /* CONFIG_NFS_V4_1 */ |
| 579 | |
Trond Myklebust | 40dd4b7 | 2015-01-24 13:54:37 -0500 | [diff] [blame] | 580 | static inline bool nfs_have_layout(struct inode *inode) |
| 581 | { |
| 582 | return false; |
| 583 | } |
| 584 | |
Andy Adamson | 974cec8 | 2010-10-20 00:18:02 -0400 | [diff] [blame] | 585 | static inline void pnfs_destroy_all_layouts(struct nfs_client *clp) |
| 586 | { |
| 587 | } |
| 588 | |
Benny Halevy | e5e9401 | 2010-10-20 00:18:01 -0400 | [diff] [blame] | 589 | static inline void pnfs_destroy_layout(struct nfs_inode *nfsi) |
| 590 | { |
| 591 | } |
| 592 | |
| 593 | static inline struct pnfs_layout_segment * |
Trond Myklebust | 9369a43 | 2012-09-18 20:57:08 -0400 | [diff] [blame] | 594 | pnfs_get_lseg(struct pnfs_layout_segment *lseg) |
Fred Isaman | d684d2a | 2011-03-01 01:34:13 +0000 | [diff] [blame] | 595 | { |
| 596 | return NULL; |
| 597 | } |
| 598 | |
Trond Myklebust | 9369a43 | 2012-09-18 20:57:08 -0400 | [diff] [blame] | 599 | static inline void pnfs_put_lseg(struct pnfs_layout_segment *lseg) |
Fred Isaman | d684d2a | 2011-03-01 01:34:13 +0000 | [diff] [blame] | 600 | { |
| 601 | } |
| 602 | |
Benny Halevy | cbe8260 | 2011-05-22 19:52:37 +0300 | [diff] [blame] | 603 | static inline int pnfs_return_layout(struct inode *ino) |
| 604 | { |
| 605 | return 0; |
| 606 | } |
| 607 | |
Trond Myklebust | 2402867 | 2013-03-20 13:23:33 -0400 | [diff] [blame] | 608 | static inline int pnfs_commit_and_return_layout(struct inode *inode) |
| 609 | { |
| 610 | return 0; |
| 611 | } |
| 612 | |
Fred Isaman | f7e8917 | 2011-01-06 11:36:32 +0000 | [diff] [blame] | 613 | static inline bool |
Benny Halevy | 8a1636c | 2010-07-14 15:43:57 -0400 | [diff] [blame] | 614 | pnfs_ld_layoutret_on_setattr(struct inode *inode) |
| 615 | { |
| 616 | return false; |
| 617 | } |
| 618 | |
| 619 | static inline bool |
Christoph Hellwig | 612aa98 | 2014-09-10 08:23:30 -0700 | [diff] [blame] | 620 | pnfs_ld_read_whole_page(struct inode *inode) |
| 621 | { |
| 622 | return false; |
| 623 | } |
| 624 | |
Trond Myklebust | 5bb89b4 | 2015-03-25 14:14:42 -0400 | [diff] [blame] | 625 | static inline int |
| 626 | pnfs_sync_inode(struct inode *inode, bool datasync) |
| 627 | { |
| 628 | return 0; |
| 629 | } |
| 630 | |
Christoph Hellwig | 612aa98 | 2014-09-10 08:23:30 -0700 | [diff] [blame] | 631 | static inline bool |
Fred Isaman | f7e8917 | 2011-01-06 11:36:32 +0000 | [diff] [blame] | 632 | pnfs_roc(struct inode *ino) |
| 633 | { |
| 634 | return false; |
| 635 | } |
| 636 | |
| 637 | static inline void |
| 638 | pnfs_roc_release(struct inode *ino) |
| 639 | { |
| 640 | } |
| 641 | |
| 642 | static inline void |
| 643 | pnfs_roc_set_barrier(struct inode *ino, u32 barrier) |
| 644 | { |
| 645 | } |
| 646 | |
Trond Myklebust | 4ff376f | 2015-08-18 23:23:21 -0500 | [diff] [blame] | 647 | static inline void |
| 648 | pnfs_roc_get_barrier(struct inode *ino, u32 *barrier) |
Fred Isaman | f7e8917 | 2011-01-06 11:36:32 +0000 | [diff] [blame] | 649 | { |
Fred Isaman | f7e8917 | 2011-01-06 11:36:32 +0000 | [diff] [blame] | 650 | } |
| 651 | |
Peng Tao | 500d701 | 2015-09-22 11:35:22 +0800 | [diff] [blame] | 652 | static inline bool |
| 653 | pnfs_wait_on_layoutreturn(struct inode *ino, struct rpc_task *task) |
| 654 | { |
| 655 | return false; |
| 656 | } |
| 657 | |
Benny Halevy | 738fd0f3 | 2011-07-30 20:52:36 -0400 | [diff] [blame] | 658 | static inline void set_pnfs_layoutdriver(struct nfs_server *s, |
Trond Myklebust | a00ed25 | 2011-07-31 16:39:04 -0400 | [diff] [blame] | 659 | const struct nfs_fh *mntfh, u32 id) |
Ricardo Labiaga | 85e174b | 2010-10-20 00:17:58 -0400 | [diff] [blame] | 660 | { |
| 661 | } |
| 662 | |
| 663 | static inline void unset_pnfs_layoutdriver(struct nfs_server *s) |
| 664 | { |
| 665 | } |
| 666 | |
Fred Isaman | a861a1e | 2011-03-23 13:27:51 +0000 | [diff] [blame] | 667 | static inline int |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 668 | pnfs_commit_list(struct inode *inode, struct list_head *mds_pages, int how, |
| 669 | struct nfs_commit_info *cinfo) |
Fred Isaman | a861a1e | 2011-03-23 13:27:51 +0000 | [diff] [blame] | 670 | { |
| 671 | return PNFS_NOT_ATTEMPTED; |
| 672 | } |
| 673 | |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 674 | static inline struct pnfs_ds_commit_info * |
| 675 | pnfs_get_ds_info(struct inode *inode) |
| 676 | { |
| 677 | return NULL; |
| 678 | } |
| 679 | |
Trond Myklebust | 8dd3775 | 2012-03-15 17:16:40 -0400 | [diff] [blame] | 680 | static inline bool |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 681 | pnfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, |
Weston Andros Adamson | b57ff13 | 2014-09-05 18:20:21 -0400 | [diff] [blame] | 682 | struct nfs_commit_info *cinfo, u32 ds_commit_idx) |
Fred Isaman | a861a1e | 2011-03-23 13:27:51 +0000 | [diff] [blame] | 683 | { |
Trond Myklebust | 8dd3775 | 2012-03-15 17:16:40 -0400 | [diff] [blame] | 684 | return false; |
Fred Isaman | a861a1e | 2011-03-23 13:27:51 +0000 | [diff] [blame] | 685 | } |
| 686 | |
Trond Myklebust | 8dd3775 | 2012-03-15 17:16:40 -0400 | [diff] [blame] | 687 | static inline bool |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 688 | pnfs_clear_request_commit(struct nfs_page *req, struct nfs_commit_info *cinfo) |
Fred Isaman | a861a1e | 2011-03-23 13:27:51 +0000 | [diff] [blame] | 689 | { |
Trond Myklebust | 8dd3775 | 2012-03-15 17:16:40 -0400 | [diff] [blame] | 690 | return false; |
Fred Isaman | d6d6dc7 | 2012-03-08 17:29:35 -0500 | [diff] [blame] | 691 | } |
| 692 | |
| 693 | static inline int |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 694 | pnfs_scan_commit_lists(struct inode *inode, struct nfs_commit_info *cinfo, |
| 695 | int max) |
Fred Isaman | d6d6dc7 | 2012-03-08 17:29:35 -0500 | [diff] [blame] | 696 | { |
| 697 | return 0; |
Fred Isaman | a861a1e | 2011-03-23 13:27:51 +0000 | [diff] [blame] | 698 | } |
| 699 | |
Weston Andros Adamson | 02d1426 | 2014-07-17 20:42:17 -0400 | [diff] [blame] | 700 | static inline struct nfs_page * |
| 701 | pnfs_search_commit_reqs(struct inode *inode, struct nfs_commit_info *cinfo, |
| 702 | struct page *page) |
| 703 | { |
| 704 | return NULL; |
| 705 | } |
| 706 | |
Andy Adamson | ef31153 | 2011-03-12 02:58:10 -0500 | [diff] [blame] | 707 | static inline int pnfs_layoutcommit_inode(struct inode *inode, bool sync) |
Andy Adamson | 863a3c6 | 2011-03-23 13:27:54 +0000 | [diff] [blame] | 708 | { |
| 709 | return 0; |
| 710 | } |
Benny Halevy | 1775bc3 | 2011-05-20 13:47:33 +0200 | [diff] [blame] | 711 | |
Andy Adamson | 82be417 | 2012-05-23 05:02:35 -0400 | [diff] [blame] | 712 | static inline bool |
| 713 | pnfs_use_threshold(struct nfs4_threshold **dst, struct nfs4_threshold *src, |
| 714 | struct nfs_server *nfss) |
| 715 | { |
| 716 | return false; |
| 717 | } |
| 718 | |
Trond Myklebust | d8c951c | 2014-01-13 12:08:11 -0500 | [diff] [blame] | 719 | static inline bool |
| 720 | pnfs_layoutcommit_outstanding(struct inode *inode) |
| 721 | { |
| 722 | return false; |
| 723 | } |
| 724 | |
| 725 | |
Andy Adamson | 82be417 | 2012-05-23 05:02:35 -0400 | [diff] [blame] | 726 | static inline struct nfs4_threshold *pnfs_mdsthreshold_alloc(void) |
| 727 | { |
| 728 | return NULL; |
| 729 | } |
| 730 | |
Peng Tao | 5f01d95 | 2014-05-30 18:15:59 +0800 | [diff] [blame] | 731 | static inline void nfs4_pnfs_v3_ds_connect_unload(void) |
| 732 | { |
| 733 | } |
| 734 | |
Ricardo Labiaga | 85e174b | 2010-10-20 00:17:58 -0400 | [diff] [blame] | 735 | #endif /* CONFIG_NFS_V4_1 */ |
| 736 | |
Peng Tao | 865a7ec | 2015-06-25 18:19:32 +0800 | [diff] [blame] | 737 | #if IS_ENABLED(CONFIG_NFS_V4_2) |
Trond Myklebust | c8ad889 | 2015-08-05 17:31:58 -0400 | [diff] [blame] | 738 | int pnfs_report_layoutstat(struct inode *inode, gfp_t gfp_flags); |
Peng Tao | 865a7ec | 2015-06-25 18:19:32 +0800 | [diff] [blame] | 739 | #else |
| 740 | static inline int |
Trond Myklebust | c8ad889 | 2015-08-05 17:31:58 -0400 | [diff] [blame] | 741 | pnfs_report_layoutstat(struct inode *inode, gfp_t gfp_flags) |
Peng Tao | 865a7ec | 2015-06-25 18:19:32 +0800 | [diff] [blame] | 742 | { |
| 743 | return 0; |
| 744 | } |
| 745 | #endif |
| 746 | |
Ricardo Labiaga | 85e174b | 2010-10-20 00:17:58 -0400 | [diff] [blame] | 747 | #endif /* FS_NFS_PNFS_H */ |