Dean Hildebrand | 7ab672c | 2010-10-20 00:18:00 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Module for the pnfs nfs4 file layout driver. |
| 3 | * Defines all I/O and Policy interface operations, plus code |
| 4 | * to register itself with the pNFS client. |
| 5 | * |
| 6 | * Copyright (c) 2002 |
| 7 | * The Regents of the University of Michigan |
| 8 | * All Rights Reserved |
| 9 | * |
| 10 | * Dean Hildebrand <dhildebz@umich.edu> |
| 11 | * |
| 12 | * Permission is granted to use, copy, create derivative works, and |
| 13 | * redistribute this software and such derivative works for any purpose, |
| 14 | * so long as the name of the University of Michigan is not used in |
| 15 | * any advertising or publicity pertaining to the use or distribution |
| 16 | * of this software without specific, written prior authorization. If |
| 17 | * the above copyright notice or any other identification of the |
| 18 | * University of Michigan is included in any copy of any portion of |
| 19 | * this software, then the disclaimer below must also be included. |
| 20 | * |
| 21 | * This software is provided as is, without representation or warranty |
| 22 | * of any kind either express or implied, including without limitation |
| 23 | * the implied warranties of merchantability, fitness for a particular |
| 24 | * purpose, or noninfringement. The Regents of the University of |
| 25 | * Michigan shall not be liable for any damages, including special, |
| 26 | * indirect, incidental, or consequential damages, with respect to any |
| 27 | * claim arising out of or in connection with the use of the software, |
| 28 | * even if it has been or is hereafter advised of the possibility of |
| 29 | * such damages. |
| 30 | */ |
| 31 | |
| 32 | #include <linux/nfs_fs.h> |
Benny Halevy | 19345cb | 2011-06-19 18:33:46 -0400 | [diff] [blame] | 33 | #include <linux/nfs_page.h> |
Paul Gortmaker | 143cb49 | 2011-07-01 14:23:34 -0400 | [diff] [blame] | 34 | #include <linux/module.h> |
Tejun Heo | 66114ca | 2015-05-22 17:13:32 -0400 | [diff] [blame] | 35 | #include <linux/backing-dev.h> |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 36 | |
Weston Andros Adamson | 0a70219 | 2012-02-17 13:15:24 -0500 | [diff] [blame] | 37 | #include <linux/sunrpc/metrics.h> |
| 38 | |
Tom Haynes | b596872 | 2014-05-12 14:35:52 -0700 | [diff] [blame] | 39 | #include "../nfs4session.h" |
| 40 | #include "../internal.h" |
| 41 | #include "../delegation.h" |
| 42 | #include "filelayout.h" |
| 43 | #include "../nfs4trace.h" |
Dean Hildebrand | 7ab672c | 2010-10-20 00:18:00 -0400 | [diff] [blame] | 44 | |
| 45 | #define NFSDBG_FACILITY NFSDBG_PNFS_LD |
| 46 | |
| 47 | MODULE_LICENSE("GPL"); |
| 48 | MODULE_AUTHOR("Dean Hildebrand <dhildebz@umich.edu>"); |
| 49 | MODULE_DESCRIPTION("The NFSv4 file layout driver"); |
| 50 | |
Andy Adamson | cbdabc7 | 2011-03-01 01:34:20 +0000 | [diff] [blame] | 51 | #define FILELAYOUT_POLL_RETRY_MAX (15*HZ) |
| 52 | |
Fred Isaman | cfe7f41 | 2011-03-01 01:34:18 +0000 | [diff] [blame] | 53 | static loff_t |
| 54 | filelayout_get_dense_offset(struct nfs4_filelayout_segment *flseg, |
| 55 | loff_t offset) |
| 56 | { |
| 57 | u32 stripe_width = flseg->stripe_unit * flseg->dsaddr->stripe_count; |
Chris Metcalf | 3476f11 | 2011-08-11 13:54:28 -0700 | [diff] [blame] | 58 | u64 stripe_no; |
| 59 | u32 rem; |
Fred Isaman | cfe7f41 | 2011-03-01 01:34:18 +0000 | [diff] [blame] | 60 | |
| 61 | offset -= flseg->pattern_offset; |
Chris Metcalf | 3476f11 | 2011-08-11 13:54:28 -0700 | [diff] [blame] | 62 | stripe_no = div_u64(offset, stripe_width); |
| 63 | div_u64_rem(offset, flseg->stripe_unit, &rem); |
Fred Isaman | cfe7f41 | 2011-03-01 01:34:18 +0000 | [diff] [blame] | 64 | |
Chris Metcalf | 3476f11 | 2011-08-11 13:54:28 -0700 | [diff] [blame] | 65 | return stripe_no * flseg->stripe_unit + rem; |
Fred Isaman | cfe7f41 | 2011-03-01 01:34:18 +0000 | [diff] [blame] | 66 | } |
| 67 | |
| 68 | /* This function is used by the layout driver to calculate the |
| 69 | * offset of the file on the dserver based on whether the |
| 70 | * layout type is STRIPE_DENSE or STRIPE_SPARSE |
| 71 | */ |
| 72 | static loff_t |
| 73 | filelayout_get_dserver_offset(struct pnfs_layout_segment *lseg, loff_t offset) |
| 74 | { |
| 75 | struct nfs4_filelayout_segment *flseg = FILELAYOUT_LSEG(lseg); |
| 76 | |
| 77 | switch (flseg->stripe_type) { |
| 78 | case STRIPE_SPARSE: |
| 79 | return offset; |
| 80 | |
| 81 | case STRIPE_DENSE: |
| 82 | return filelayout_get_dense_offset(flseg, offset); |
| 83 | } |
| 84 | |
| 85 | BUG(); |
| 86 | } |
| 87 | |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 88 | static void filelayout_reset_write(struct nfs_pgio_header *hdr) |
Andy Adamson | e7dd79af | 2012-04-27 17:53:46 -0400 | [diff] [blame] | 89 | { |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 90 | struct rpc_task *task = &hdr->task; |
Andy Adamson | e7dd79af | 2012-04-27 17:53:46 -0400 | [diff] [blame] | 91 | |
| 92 | if (!test_and_set_bit(NFS_IOHDR_REDO, &hdr->flags)) { |
| 93 | dprintk("%s Reset task %5u for i/o through MDS " |
Niels de Vos | 1e8968c | 2013-12-17 18:20:16 +0100 | [diff] [blame] | 94 | "(req %s/%llu, %u bytes @ offset %llu)\n", __func__, |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 95 | hdr->task.tk_pid, |
Bryan Schumaker | 497826a | 2012-05-22 10:10:03 -0400 | [diff] [blame] | 96 | hdr->inode->i_sb->s_id, |
Niels de Vos | 1e8968c | 2013-12-17 18:20:16 +0100 | [diff] [blame] | 97 | (unsigned long long)NFS_FILEID(hdr->inode), |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 98 | hdr->args.count, |
| 99 | (unsigned long long)hdr->args.offset); |
Andy Adamson | e7dd79af | 2012-04-27 17:53:46 -0400 | [diff] [blame] | 100 | |
Weston Andros Adamson | 53113ad | 2014-06-09 11:48:38 -0400 | [diff] [blame] | 101 | task->tk_status = pnfs_write_done_resend_to_mds(hdr); |
Andy Adamson | e7dd79af | 2012-04-27 17:53:46 -0400 | [diff] [blame] | 102 | } |
| 103 | } |
| 104 | |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 105 | static void filelayout_reset_read(struct nfs_pgio_header *hdr) |
Andy Adamson | e7dd79af | 2012-04-27 17:53:46 -0400 | [diff] [blame] | 106 | { |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 107 | struct rpc_task *task = &hdr->task; |
Andy Adamson | e7dd79af | 2012-04-27 17:53:46 -0400 | [diff] [blame] | 108 | |
| 109 | if (!test_and_set_bit(NFS_IOHDR_REDO, &hdr->flags)) { |
| 110 | dprintk("%s Reset task %5u for i/o through MDS " |
Niels de Vos | 1e8968c | 2013-12-17 18:20:16 +0100 | [diff] [blame] | 111 | "(req %s/%llu, %u bytes @ offset %llu)\n", __func__, |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 112 | hdr->task.tk_pid, |
Bryan Schumaker | 497826a | 2012-05-22 10:10:03 -0400 | [diff] [blame] | 113 | hdr->inode->i_sb->s_id, |
Niels de Vos | 1e8968c | 2013-12-17 18:20:16 +0100 | [diff] [blame] | 114 | (unsigned long long)NFS_FILEID(hdr->inode), |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 115 | hdr->args.count, |
| 116 | (unsigned long long)hdr->args.offset); |
Andy Adamson | e7dd79af | 2012-04-27 17:53:46 -0400 | [diff] [blame] | 117 | |
Weston Andros Adamson | 53113ad | 2014-06-09 11:48:38 -0400 | [diff] [blame] | 118 | task->tk_status = pnfs_read_done_resend_to_mds(hdr); |
Andy Adamson | e7dd79af | 2012-04-27 17:53:46 -0400 | [diff] [blame] | 119 | } |
| 120 | } |
| 121 | |
Andy Adamson | cbdabc7 | 2011-03-01 01:34:20 +0000 | [diff] [blame] | 122 | static int filelayout_async_handle_error(struct rpc_task *task, |
| 123 | struct nfs4_state *state, |
| 124 | struct nfs_client *clp, |
Andy Adamson | e7dd79af | 2012-04-27 17:53:46 -0400 | [diff] [blame] | 125 | struct pnfs_layout_segment *lseg) |
Andy Adamson | cbdabc7 | 2011-03-01 01:34:20 +0000 | [diff] [blame] | 126 | { |
Trond Myklebust | d527e5c | 2012-10-11 13:43:38 -0400 | [diff] [blame] | 127 | struct pnfs_layout_hdr *lo = lseg->pls_layout; |
| 128 | struct inode *inode = lo->plh_inode; |
Andy Adamson | e7dd79af | 2012-04-27 17:53:46 -0400 | [diff] [blame] | 129 | struct nfs_server *mds_server = NFS_SERVER(inode); |
| 130 | struct nfs4_deviceid_node *devid = FILELAYOUT_DEVID_NODE(lseg); |
Andy Adamson | 9cb8196 | 2012-03-07 10:49:41 -0500 | [diff] [blame] | 131 | struct nfs_client *mds_client = mds_server->nfs_client; |
Andy Adamson | 671fb89 | 2012-04-27 17:53:49 -0400 | [diff] [blame] | 132 | struct nfs4_slot_table *tbl = &clp->cl_session->fc_slot_table; |
Andy Adamson | 9cb8196 | 2012-03-07 10:49:41 -0500 | [diff] [blame] | 133 | |
Andy Adamson | cbdabc7 | 2011-03-01 01:34:20 +0000 | [diff] [blame] | 134 | if (task->tk_status >= 0) |
| 135 | return 0; |
Andy Adamson | cbdabc7 | 2011-03-01 01:34:20 +0000 | [diff] [blame] | 136 | |
| 137 | switch (task->tk_status) { |
Andy Adamson | 9cb8196 | 2012-03-07 10:49:41 -0500 | [diff] [blame] | 138 | /* MDS state errors */ |
| 139 | case -NFS4ERR_DELEG_REVOKED: |
| 140 | case -NFS4ERR_ADMIN_REVOKED: |
| 141 | case -NFS4ERR_BAD_STATEID: |
Andy Adamson | 9cb8196 | 2012-03-07 10:49:41 -0500 | [diff] [blame] | 142 | case -NFS4ERR_OPENMODE: |
Andy Adamson | e7dd79af | 2012-04-27 17:53:46 -0400 | [diff] [blame] | 143 | if (state == NULL) |
| 144 | break; |
Trond Myklebust | 5d42230 | 2013-03-14 16:57:48 -0400 | [diff] [blame] | 145 | if (nfs4_schedule_stateid_recovery(mds_server, state) < 0) |
| 146 | goto out_bad_stateid; |
Andy Adamson | 9cb8196 | 2012-03-07 10:49:41 -0500 | [diff] [blame] | 147 | goto wait_on_recovery; |
| 148 | case -NFS4ERR_EXPIRED: |
Trond Myklebust | 5d42230 | 2013-03-14 16:57:48 -0400 | [diff] [blame] | 149 | if (state != NULL) { |
| 150 | if (nfs4_schedule_stateid_recovery(mds_server, state) < 0) |
| 151 | goto out_bad_stateid; |
| 152 | } |
Andy Adamson | 9cb8196 | 2012-03-07 10:49:41 -0500 | [diff] [blame] | 153 | nfs4_schedule_lease_recovery(mds_client); |
| 154 | goto wait_on_recovery; |
| 155 | /* DS session errors */ |
Andy Adamson | cbdabc7 | 2011-03-01 01:34:20 +0000 | [diff] [blame] | 156 | case -NFS4ERR_BADSESSION: |
| 157 | case -NFS4ERR_BADSLOT: |
| 158 | case -NFS4ERR_BAD_HIGH_SLOT: |
| 159 | case -NFS4ERR_DEADSESSION: |
| 160 | case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: |
| 161 | case -NFS4ERR_SEQ_FALSE_RETRY: |
| 162 | case -NFS4ERR_SEQ_MISORDERED: |
| 163 | dprintk("%s ERROR %d, Reset session. Exchangeid " |
| 164 | "flags 0x%x\n", __func__, task->tk_status, |
| 165 | clp->cl_exchange_flags); |
Trond Myklebust | 9f59479 | 2012-05-27 13:02:53 -0400 | [diff] [blame] | 166 | nfs4_schedule_session_recovery(clp->cl_session, task->tk_status); |
Andy Adamson | cbdabc7 | 2011-03-01 01:34:20 +0000 | [diff] [blame] | 167 | break; |
| 168 | case -NFS4ERR_DELAY: |
| 169 | case -NFS4ERR_GRACE: |
Andy Adamson | cbdabc7 | 2011-03-01 01:34:20 +0000 | [diff] [blame] | 170 | rpc_delay(task, FILELAYOUT_POLL_RETRY_MAX); |
| 171 | break; |
Andy Adamson | a8a4ae3 | 2011-05-03 13:43:03 -0400 | [diff] [blame] | 172 | case -NFS4ERR_RETRY_UNCACHED_REP: |
| 173 | break; |
Andy Adamson | 041245c | 2012-04-27 17:53:53 -0400 | [diff] [blame] | 174 | /* Invalidate Layout errors */ |
| 175 | case -NFS4ERR_PNFS_NO_LAYOUT: |
| 176 | case -ESTALE: /* mapped NFS4ERR_STALE */ |
| 177 | case -EBADHANDLE: /* mapped NFS4ERR_BADHANDLE */ |
| 178 | case -EISDIR: /* mapped NFS4ERR_ISDIR */ |
| 179 | case -NFS4ERR_FHEXPIRED: |
| 180 | case -NFS4ERR_WRONG_TYPE: |
| 181 | dprintk("%s Invalid layout error %d\n", __func__, |
| 182 | task->tk_status); |
| 183 | /* |
| 184 | * Destroy layout so new i/o will get a new layout. |
| 185 | * Layout will not be destroyed until all current lseg |
| 186 | * references are put. Mark layout as invalid to resend failed |
| 187 | * i/o and all i/o waiting on the slot table to the MDS until |
| 188 | * layout is destroyed and a new valid layout is obtained. |
| 189 | */ |
Andy Adamson | d42e787 | 2012-05-22 08:09:28 -0400 | [diff] [blame] | 190 | pnfs_destroy_layout(NFS_I(inode)); |
Andy Adamson | 041245c | 2012-04-27 17:53:53 -0400 | [diff] [blame] | 191 | rpc_wake_up(&tbl->slot_tbl_waitq); |
| 192 | goto reset; |
Andy Adamson | e7dd79af | 2012-04-27 17:53:46 -0400 | [diff] [blame] | 193 | /* RPC connection errors */ |
| 194 | case -ECONNREFUSED: |
| 195 | case -EHOSTDOWN: |
| 196 | case -EHOSTUNREACH: |
| 197 | case -ENETUNREACH: |
| 198 | case -EIO: |
| 199 | case -ETIMEDOUT: |
| 200 | case -EPIPE: |
| 201 | dprintk("%s DS connection error %d\n", __func__, |
Andy Adamson | cbdabc7 | 2011-03-01 01:34:20 +0000 | [diff] [blame] | 202 | task->tk_status); |
Trond Myklebust | 1dfed27 | 2012-09-18 19:51:12 -0400 | [diff] [blame] | 203 | nfs4_mark_deviceid_unavailable(devid); |
Peng Tao | c220106 | 2014-09-06 00:53:29 +0800 | [diff] [blame] | 204 | pnfs_error_mark_layout_for_return(inode, lseg); |
Andy Adamson | 671fb89 | 2012-04-27 17:53:49 -0400 | [diff] [blame] | 205 | rpc_wake_up(&tbl->slot_tbl_waitq); |
Andy Adamson | e7dd79af | 2012-04-27 17:53:46 -0400 | [diff] [blame] | 206 | /* fall through */ |
| 207 | default: |
Olga Kornievskaia | fabbbee | 2017-03-30 10:10:55 -0400 | [diff] [blame] | 208 | pnfs_set_lo_fail(lseg); |
Andy Adamson | 041245c | 2012-04-27 17:53:53 -0400 | [diff] [blame] | 209 | reset: |
Andy Adamson | e7dd79af | 2012-04-27 17:53:46 -0400 | [diff] [blame] | 210 | dprintk("%s Retry through MDS. Error %d\n", __func__, |
| 211 | task->tk_status); |
| 212 | return -NFS4ERR_RESET_TO_MDS; |
Andy Adamson | cbdabc7 | 2011-03-01 01:34:20 +0000 | [diff] [blame] | 213 | } |
Andy Adamson | 9cb8196 | 2012-03-07 10:49:41 -0500 | [diff] [blame] | 214 | out: |
Andy Adamson | cbdabc7 | 2011-03-01 01:34:20 +0000 | [diff] [blame] | 215 | task->tk_status = 0; |
| 216 | return -EAGAIN; |
Trond Myklebust | 5d42230 | 2013-03-14 16:57:48 -0400 | [diff] [blame] | 217 | out_bad_stateid: |
| 218 | task->tk_status = -EIO; |
| 219 | return 0; |
Andy Adamson | 9cb8196 | 2012-03-07 10:49:41 -0500 | [diff] [blame] | 220 | wait_on_recovery: |
| 221 | rpc_sleep_on(&mds_client->cl_rpcwaitq, task, NULL); |
| 222 | if (test_bit(NFS4CLNT_MANAGER_RUNNING, &mds_client->cl_state) == 0) |
| 223 | rpc_wake_up_queued_task(&mds_client->cl_rpcwaitq, task); |
| 224 | goto out; |
Andy Adamson | cbdabc7 | 2011-03-01 01:34:20 +0000 | [diff] [blame] | 225 | } |
| 226 | |
| 227 | /* NFS_PROTO call done callback routines */ |
| 228 | |
| 229 | static int filelayout_read_done_cb(struct rpc_task *task, |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 230 | struct nfs_pgio_header *hdr) |
Andy Adamson | cbdabc7 | 2011-03-01 01:34:20 +0000 | [diff] [blame] | 231 | { |
Andy Adamson | e7dd79af | 2012-04-27 17:53:46 -0400 | [diff] [blame] | 232 | int err; |
Andy Adamson | cbdabc7 | 2011-03-01 01:34:20 +0000 | [diff] [blame] | 233 | |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 234 | trace_nfs4_pnfs_read(hdr, task->tk_status); |
| 235 | err = filelayout_async_handle_error(task, hdr->args.context->state, |
| 236 | hdr->ds_clp, hdr->lseg); |
Andy Adamson | cbdabc7 | 2011-03-01 01:34:20 +0000 | [diff] [blame] | 237 | |
Andy Adamson | e7dd79af | 2012-04-27 17:53:46 -0400 | [diff] [blame] | 238 | switch (err) { |
| 239 | case -NFS4ERR_RESET_TO_MDS: |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 240 | filelayout_reset_read(hdr); |
Andy Adamson | e7dd79af | 2012-04-27 17:53:46 -0400 | [diff] [blame] | 241 | return task->tk_status; |
| 242 | case -EAGAIN: |
Trond Myklebust | d00c5d4 | 2011-10-19 12:17:29 -0700 | [diff] [blame] | 243 | rpc_restart_call_prepare(task); |
Andy Adamson | cbdabc7 | 2011-03-01 01:34:20 +0000 | [diff] [blame] | 244 | return -EAGAIN; |
| 245 | } |
| 246 | |
| 247 | return 0; |
| 248 | } |
| 249 | |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 250 | /* |
Andy Adamson | 863a3c6 | 2011-03-23 13:27:54 +0000 | [diff] [blame] | 251 | * We reference the rpc_cred of the first WRITE that triggers the need for |
| 252 | * a LAYOUTCOMMIT, and use it to send the layoutcommit compound. |
| 253 | * rfc5661 is not clear about which credential should be used. |
| 254 | */ |
| 255 | static void |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 256 | filelayout_set_layoutcommit(struct nfs_pgio_header *hdr) |
Andy Adamson | 863a3c6 | 2011-03-23 13:27:54 +0000 | [diff] [blame] | 257 | { |
Trond Myklebust | 2e18d4d | 2016-06-26 18:54:58 -0400 | [diff] [blame] | 258 | loff_t end_offs = 0; |
Fred Isaman | cd84160 | 2012-04-20 14:47:44 -0400 | [diff] [blame] | 259 | |
| 260 | if (FILELAYOUT_LSEG(hdr->lseg)->commit_through_mds || |
Trond Myklebust | 2e18d4d | 2016-06-26 18:54:58 -0400 | [diff] [blame] | 261 | hdr->res.verf->committed == NFS_FILE_SYNC) |
Andy Adamson | 863a3c6 | 2011-03-23 13:27:54 +0000 | [diff] [blame] | 262 | return; |
Trond Myklebust | 2e18d4d | 2016-06-26 18:54:58 -0400 | [diff] [blame] | 263 | if (hdr->res.verf->committed == NFS_DATA_SYNC) |
| 264 | end_offs = hdr->mds_offset + (loff_t)hdr->res.count; |
Andy Adamson | 863a3c6 | 2011-03-23 13:27:54 +0000 | [diff] [blame] | 265 | |
Trond Myklebust | 2e18d4d | 2016-06-26 18:54:58 -0400 | [diff] [blame] | 266 | /* Note: if the write is unstable, don't set end_offs until commit */ |
| 267 | pnfs_set_layoutcommit(hdr->inode, hdr->lseg, end_offs); |
Tom Haynes | f383b7e | 2014-06-04 15:54:57 -0700 | [diff] [blame] | 268 | dprintk("%s inode %lu pls_end_pos %lu\n", __func__, hdr->inode->i_ino, |
Fred Isaman | cd84160 | 2012-04-20 14:47:44 -0400 | [diff] [blame] | 269 | (unsigned long) NFS_I(hdr->inode)->layout->plh_lwb); |
Andy Adamson | 863a3c6 | 2011-03-23 13:27:54 +0000 | [diff] [blame] | 270 | } |
| 271 | |
Trond Myklebust | 1dfed27 | 2012-09-18 19:51:12 -0400 | [diff] [blame] | 272 | bool |
| 273 | filelayout_test_devid_unavailable(struct nfs4_deviceid_node *node) |
| 274 | { |
| 275 | return filelayout_test_devid_invalid(node) || |
| 276 | nfs4_test_deviceid_unavailable(node); |
| 277 | } |
| 278 | |
| 279 | static bool |
| 280 | filelayout_reset_to_mds(struct pnfs_layout_segment *lseg) |
| 281 | { |
| 282 | struct nfs4_deviceid_node *node = FILELAYOUT_DEVID_NODE(lseg); |
| 283 | |
Trond Myklebust | 8006bfb | 2012-09-21 14:48:04 -0400 | [diff] [blame] | 284 | return filelayout_test_devid_unavailable(node); |
Trond Myklebust | 1dfed27 | 2012-09-18 19:51:12 -0400 | [diff] [blame] | 285 | } |
| 286 | |
Andy Adamson | 863a3c6 | 2011-03-23 13:27:54 +0000 | [diff] [blame] | 287 | /* |
Andy Adamson | dc70d7b | 2011-03-01 01:34:19 +0000 | [diff] [blame] | 288 | * Call ops for the async read/write cases |
| 289 | * In the case of dense layouts, the offset needs to be reset to its |
| 290 | * original value. |
| 291 | */ |
| 292 | static void filelayout_read_prepare(struct rpc_task *task, void *data) |
| 293 | { |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 294 | struct nfs_pgio_header *hdr = data; |
Andy Adamson | dc70d7b | 2011-03-01 01:34:19 +0000 | [diff] [blame] | 295 | |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 296 | if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags))) { |
Trond Myklebust | c58c844 | 2013-03-18 19:45:14 -0400 | [diff] [blame] | 297 | rpc_exit(task, -EIO); |
| 298 | return; |
| 299 | } |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 300 | if (filelayout_reset_to_mds(hdr->lseg)) { |
Andy Adamson | 0ad2f37 | 2012-04-27 17:53:48 -0400 | [diff] [blame] | 301 | dprintk("%s task %u reset io to MDS\n", __func__, task->tk_pid); |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 302 | filelayout_reset_read(hdr); |
Andy Adamson | 0ad2f37 | 2012-04-27 17:53:48 -0400 | [diff] [blame] | 303 | rpc_exit(task, 0); |
| 304 | return; |
| 305 | } |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 306 | hdr->pgio_done_cb = filelayout_read_done_cb; |
Andy Adamson | cbdabc7 | 2011-03-01 01:34:20 +0000 | [diff] [blame] | 307 | |
Anna Schumaker | 6de7e12 | 2017-01-09 16:51:52 -0500 | [diff] [blame] | 308 | if (nfs4_setup_sequence(hdr->ds_clp, |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 309 | &hdr->args.seq_args, |
| 310 | &hdr->res.seq_res, |
Trond Myklebust | 9b20614 | 2013-03-17 15:52:00 -0400 | [diff] [blame] | 311 | task)) |
| 312 | return; |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 313 | if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context, |
| 314 | hdr->args.lock_context, FMODE_READ) == -EIO) |
Andy Adamson | 869a9d3 | 2014-03-04 12:31:09 -0500 | [diff] [blame] | 315 | rpc_exit(task, -EIO); /* lost lock, terminate I/O */ |
Andy Adamson | dc70d7b | 2011-03-01 01:34:19 +0000 | [diff] [blame] | 316 | } |
| 317 | |
| 318 | static void filelayout_read_call_done(struct rpc_task *task, void *data) |
| 319 | { |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 320 | struct nfs_pgio_header *hdr = data; |
Andy Adamson | dc70d7b | 2011-03-01 01:34:19 +0000 | [diff] [blame] | 321 | |
| 322 | dprintk("--> %s task->tk_status %d\n", __func__, task->tk_status); |
| 323 | |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 324 | if (test_bit(NFS_IOHDR_REDO, &hdr->flags) && |
Andy Adamson | f9c96fc | 2014-01-29 11:34:38 -0500 | [diff] [blame] | 325 | task->tk_status == 0) { |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 326 | nfs41_sequence_done(task, &hdr->res.seq_res); |
Andy Adamson | 0ad2f37 | 2012-04-27 17:53:48 -0400 | [diff] [blame] | 327 | return; |
Andy Adamson | f9c96fc | 2014-01-29 11:34:38 -0500 | [diff] [blame] | 328 | } |
Andy Adamson | 0ad2f37 | 2012-04-27 17:53:48 -0400 | [diff] [blame] | 329 | |
Andy Adamson | dc70d7b | 2011-03-01 01:34:19 +0000 | [diff] [blame] | 330 | /* Note this may cause RPC to be resent */ |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 331 | hdr->mds_ops->rpc_call_done(task, data); |
Andy Adamson | dc70d7b | 2011-03-01 01:34:19 +0000 | [diff] [blame] | 332 | } |
| 333 | |
Weston Andros Adamson | 0a70219 | 2012-02-17 13:15:24 -0500 | [diff] [blame] | 334 | static void filelayout_read_count_stats(struct rpc_task *task, void *data) |
| 335 | { |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 336 | struct nfs_pgio_header *hdr = data; |
Weston Andros Adamson | 0a70219 | 2012-02-17 13:15:24 -0500 | [diff] [blame] | 337 | |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 338 | rpc_count_iostats(task, NFS_SERVER(hdr->inode)->client->cl_metrics); |
Weston Andros Adamson | 0a70219 | 2012-02-17 13:15:24 -0500 | [diff] [blame] | 339 | } |
| 340 | |
Fred Isaman | a69aef1 | 2011-03-03 15:13:47 +0000 | [diff] [blame] | 341 | static int filelayout_write_done_cb(struct rpc_task *task, |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 342 | struct nfs_pgio_header *hdr) |
Fred Isaman | a69aef1 | 2011-03-03 15:13:47 +0000 | [diff] [blame] | 343 | { |
Andy Adamson | e7dd79af | 2012-04-27 17:53:46 -0400 | [diff] [blame] | 344 | int err; |
Fred Isaman | a69aef1 | 2011-03-03 15:13:47 +0000 | [diff] [blame] | 345 | |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 346 | trace_nfs4_pnfs_write(hdr, task->tk_status); |
| 347 | err = filelayout_async_handle_error(task, hdr->args.context->state, |
| 348 | hdr->ds_clp, hdr->lseg); |
Andy Adamson | e7dd79af | 2012-04-27 17:53:46 -0400 | [diff] [blame] | 349 | |
| 350 | switch (err) { |
| 351 | case -NFS4ERR_RESET_TO_MDS: |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 352 | filelayout_reset_write(hdr); |
Andy Adamson | e7dd79af | 2012-04-27 17:53:46 -0400 | [diff] [blame] | 353 | return task->tk_status; |
| 354 | case -EAGAIN: |
Trond Myklebust | d00c5d4 | 2011-10-19 12:17:29 -0700 | [diff] [blame] | 355 | rpc_restart_call_prepare(task); |
Fred Isaman | a69aef1 | 2011-03-03 15:13:47 +0000 | [diff] [blame] | 356 | return -EAGAIN; |
| 357 | } |
| 358 | |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 359 | filelayout_set_layoutcommit(hdr); |
Trond Myklebust | e033fb5 | 2016-07-21 09:43:43 -0400 | [diff] [blame] | 360 | |
| 361 | /* zero out the fattr */ |
| 362 | hdr->fattr.valid = 0; |
| 363 | if (task->tk_status >= 0) |
| 364 | nfs_writeback_update_inode(hdr); |
| 365 | |
Fred Isaman | a69aef1 | 2011-03-03 15:13:47 +0000 | [diff] [blame] | 366 | return 0; |
| 367 | } |
| 368 | |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 369 | static int filelayout_commit_done_cb(struct rpc_task *task, |
Fred Isaman | 0b7c015 | 2012-04-20 14:47:39 -0400 | [diff] [blame] | 370 | struct nfs_commit_data *data) |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 371 | { |
Andy Adamson | e7dd79af | 2012-04-27 17:53:46 -0400 | [diff] [blame] | 372 | int err; |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 373 | |
Trond Myklebust | cc668ab | 2013-08-14 15:31:28 -0400 | [diff] [blame] | 374 | trace_nfs4_pnfs_commit_ds(data, task->tk_status); |
Andy Adamson | e7dd79af | 2012-04-27 17:53:46 -0400 | [diff] [blame] | 375 | err = filelayout_async_handle_error(task, NULL, data->ds_clp, |
| 376 | data->lseg); |
| 377 | |
| 378 | switch (err) { |
| 379 | case -NFS4ERR_RESET_TO_MDS: |
Tom Haynes | f54bcf2 | 2014-12-11 15:34:59 -0500 | [diff] [blame] | 380 | pnfs_generic_prepare_to_resend_writes(data); |
Andy Adamson | e7dd79af | 2012-04-27 17:53:46 -0400 | [diff] [blame] | 381 | return -EAGAIN; |
| 382 | case -EAGAIN: |
| 383 | rpc_restart_call_prepare(task); |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 384 | return -EAGAIN; |
| 385 | } |
| 386 | |
Trond Myklebust | 73e6c5d | 2016-06-26 12:27:25 -0400 | [diff] [blame] | 387 | pnfs_set_layoutcommit(data->inode, data->lseg, data->lwb); |
Peng Tao | bc7d4b8 | 2014-08-07 10:15:03 +0800 | [diff] [blame] | 388 | |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 389 | return 0; |
| 390 | } |
| 391 | |
Fred Isaman | a69aef1 | 2011-03-03 15:13:47 +0000 | [diff] [blame] | 392 | static void filelayout_write_prepare(struct rpc_task *task, void *data) |
| 393 | { |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 394 | struct nfs_pgio_header *hdr = data; |
Fred Isaman | a69aef1 | 2011-03-03 15:13:47 +0000 | [diff] [blame] | 395 | |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 396 | if (unlikely(test_bit(NFS_CONTEXT_BAD, &hdr->args.context->flags))) { |
Trond Myklebust | c58c844 | 2013-03-18 19:45:14 -0400 | [diff] [blame] | 397 | rpc_exit(task, -EIO); |
| 398 | return; |
| 399 | } |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 400 | if (filelayout_reset_to_mds(hdr->lseg)) { |
Andy Adamson | 0ad2f37 | 2012-04-27 17:53:48 -0400 | [diff] [blame] | 401 | dprintk("%s task %u reset io to MDS\n", __func__, task->tk_pid); |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 402 | filelayout_reset_write(hdr); |
Andy Adamson | 0ad2f37 | 2012-04-27 17:53:48 -0400 | [diff] [blame] | 403 | rpc_exit(task, 0); |
| 404 | return; |
| 405 | } |
Anna Schumaker | 6de7e12 | 2017-01-09 16:51:52 -0500 | [diff] [blame] | 406 | if (nfs4_setup_sequence(hdr->ds_clp, |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 407 | &hdr->args.seq_args, |
| 408 | &hdr->res.seq_res, |
Trond Myklebust | 9b20614 | 2013-03-17 15:52:00 -0400 | [diff] [blame] | 409 | task)) |
| 410 | return; |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 411 | if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context, |
| 412 | hdr->args.lock_context, FMODE_WRITE) == -EIO) |
Andy Adamson | 869a9d3 | 2014-03-04 12:31:09 -0500 | [diff] [blame] | 413 | rpc_exit(task, -EIO); /* lost lock, terminate I/O */ |
Fred Isaman | a69aef1 | 2011-03-03 15:13:47 +0000 | [diff] [blame] | 414 | } |
| 415 | |
| 416 | static void filelayout_write_call_done(struct rpc_task *task, void *data) |
| 417 | { |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 418 | struct nfs_pgio_header *hdr = data; |
Fred Isaman | a69aef1 | 2011-03-03 15:13:47 +0000 | [diff] [blame] | 419 | |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 420 | if (test_bit(NFS_IOHDR_REDO, &hdr->flags) && |
Andy Adamson | f9c96fc | 2014-01-29 11:34:38 -0500 | [diff] [blame] | 421 | task->tk_status == 0) { |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 422 | nfs41_sequence_done(task, &hdr->res.seq_res); |
Andy Adamson | 0ad2f37 | 2012-04-27 17:53:48 -0400 | [diff] [blame] | 423 | return; |
Andy Adamson | f9c96fc | 2014-01-29 11:34:38 -0500 | [diff] [blame] | 424 | } |
Andy Adamson | 0ad2f37 | 2012-04-27 17:53:48 -0400 | [diff] [blame] | 425 | |
Fred Isaman | a69aef1 | 2011-03-03 15:13:47 +0000 | [diff] [blame] | 426 | /* Note this may cause RPC to be resent */ |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 427 | hdr->mds_ops->rpc_call_done(task, data); |
Fred Isaman | a69aef1 | 2011-03-03 15:13:47 +0000 | [diff] [blame] | 428 | } |
| 429 | |
Weston Andros Adamson | 0a70219 | 2012-02-17 13:15:24 -0500 | [diff] [blame] | 430 | static void filelayout_write_count_stats(struct rpc_task *task, void *data) |
| 431 | { |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 432 | struct nfs_pgio_header *hdr = data; |
Weston Andros Adamson | 0a70219 | 2012-02-17 13:15:24 -0500 | [diff] [blame] | 433 | |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 434 | rpc_count_iostats(task, NFS_SERVER(hdr->inode)->client->cl_metrics); |
Weston Andros Adamson | 0a70219 | 2012-02-17 13:15:24 -0500 | [diff] [blame] | 435 | } |
| 436 | |
Fred Isaman | 0b7c015 | 2012-04-20 14:47:39 -0400 | [diff] [blame] | 437 | static void filelayout_commit_prepare(struct rpc_task *task, void *data) |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 438 | { |
Fred Isaman | 0b7c015 | 2012-04-20 14:47:39 -0400 | [diff] [blame] | 439 | struct nfs_commit_data *wdata = data; |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 440 | |
Anna Schumaker | 6de7e12 | 2017-01-09 16:51:52 -0500 | [diff] [blame] | 441 | nfs4_setup_sequence(wdata->ds_clp, |
Trond Myklebust | d9afbd1 | 2012-10-22 20:28:44 -0400 | [diff] [blame] | 442 | &wdata->args.seq_args, |
| 443 | &wdata->res.seq_res, |
| 444 | task); |
Fred Isaman | 0b7c015 | 2012-04-20 14:47:39 -0400 | [diff] [blame] | 445 | } |
| 446 | |
Fred Isaman | 0b7c015 | 2012-04-20 14:47:39 -0400 | [diff] [blame] | 447 | static void filelayout_commit_count_stats(struct rpc_task *task, void *data) |
| 448 | { |
| 449 | struct nfs_commit_data *cdata = data; |
| 450 | |
| 451 | rpc_count_iostats(task, NFS_SERVER(cdata->inode)->client->cl_metrics); |
| 452 | } |
| 453 | |
Trond Myklebust | 1728017 | 2012-03-11 13:11:00 -0400 | [diff] [blame] | 454 | static const struct rpc_call_ops filelayout_read_call_ops = { |
Andy Adamson | dc70d7b | 2011-03-01 01:34:19 +0000 | [diff] [blame] | 455 | .rpc_call_prepare = filelayout_read_prepare, |
| 456 | .rpc_call_done = filelayout_read_call_done, |
Weston Andros Adamson | 0a70219 | 2012-02-17 13:15:24 -0500 | [diff] [blame] | 457 | .rpc_count_stats = filelayout_read_count_stats, |
Tom Haynes | f54bcf2 | 2014-12-11 15:34:59 -0500 | [diff] [blame] | 458 | .rpc_release = pnfs_generic_rw_release, |
Andy Adamson | dc70d7b | 2011-03-01 01:34:19 +0000 | [diff] [blame] | 459 | }; |
| 460 | |
Trond Myklebust | 1728017 | 2012-03-11 13:11:00 -0400 | [diff] [blame] | 461 | static const struct rpc_call_ops filelayout_write_call_ops = { |
Fred Isaman | a69aef1 | 2011-03-03 15:13:47 +0000 | [diff] [blame] | 462 | .rpc_call_prepare = filelayout_write_prepare, |
| 463 | .rpc_call_done = filelayout_write_call_done, |
Weston Andros Adamson | 0a70219 | 2012-02-17 13:15:24 -0500 | [diff] [blame] | 464 | .rpc_count_stats = filelayout_write_count_stats, |
Tom Haynes | f54bcf2 | 2014-12-11 15:34:59 -0500 | [diff] [blame] | 465 | .rpc_release = pnfs_generic_rw_release, |
Fred Isaman | a69aef1 | 2011-03-03 15:13:47 +0000 | [diff] [blame] | 466 | }; |
| 467 | |
Trond Myklebust | 1728017 | 2012-03-11 13:11:00 -0400 | [diff] [blame] | 468 | static const struct rpc_call_ops filelayout_commit_call_ops = { |
Fred Isaman | 0b7c015 | 2012-04-20 14:47:39 -0400 | [diff] [blame] | 469 | .rpc_call_prepare = filelayout_commit_prepare, |
Tom Haynes | f54bcf2 | 2014-12-11 15:34:59 -0500 | [diff] [blame] | 470 | .rpc_call_done = pnfs_generic_write_commit_done, |
Fred Isaman | 0b7c015 | 2012-04-20 14:47:39 -0400 | [diff] [blame] | 471 | .rpc_count_stats = filelayout_commit_count_stats, |
Tom Haynes | f54bcf2 | 2014-12-11 15:34:59 -0500 | [diff] [blame] | 472 | .rpc_release = pnfs_generic_commit_release, |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 473 | }; |
| 474 | |
Andy Adamson | dc70d7b | 2011-03-01 01:34:19 +0000 | [diff] [blame] | 475 | static enum pnfs_try_status |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 476 | filelayout_read_pagelist(struct nfs_pgio_header *hdr) |
Andy Adamson | dc70d7b | 2011-03-01 01:34:19 +0000 | [diff] [blame] | 477 | { |
Fred Isaman | cd84160 | 2012-04-20 14:47:44 -0400 | [diff] [blame] | 478 | struct pnfs_layout_segment *lseg = hdr->lseg; |
Andy Adamson | dc70d7b | 2011-03-01 01:34:19 +0000 | [diff] [blame] | 479 | struct nfs4_pnfs_ds *ds; |
Andy Adamson | 0e20162 | 2013-09-06 14:14:00 -0400 | [diff] [blame] | 480 | struct rpc_clnt *ds_clnt; |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 481 | loff_t offset = hdr->args.offset; |
Andy Adamson | dc70d7b | 2011-03-01 01:34:19 +0000 | [diff] [blame] | 482 | u32 j, idx; |
| 483 | struct nfs_fh *fh; |
Andy Adamson | dc70d7b | 2011-03-01 01:34:19 +0000 | [diff] [blame] | 484 | |
Alexey Dobriyan | 5b5e092 | 2017-02-27 14:30:02 -0800 | [diff] [blame] | 485 | dprintk("--> %s ino %lu pgbase %u req %zu@%llu\n", |
Fred Isaman | cd84160 | 2012-04-20 14:47:44 -0400 | [diff] [blame] | 486 | __func__, hdr->inode->i_ino, |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 487 | hdr->args.pgbase, (size_t)hdr->args.count, offset); |
Andy Adamson | dc70d7b | 2011-03-01 01:34:19 +0000 | [diff] [blame] | 488 | |
| 489 | /* Retrieve the correct rpc_client for the byte range */ |
| 490 | j = nfs4_fl_calc_j_index(lseg, offset); |
| 491 | idx = nfs4_fl_calc_ds_index(lseg, j); |
| 492 | ds = nfs4_fl_prepare_ds(lseg, idx); |
Andy Adamson | 90fecfc | 2012-04-27 17:53:43 -0400 | [diff] [blame] | 493 | if (!ds) |
Andy Adamson | dc70d7b | 2011-03-01 01:34:19 +0000 | [diff] [blame] | 494 | return PNFS_NOT_ATTEMPTED; |
Andy Adamson | 0e20162 | 2013-09-06 14:14:00 -0400 | [diff] [blame] | 495 | |
| 496 | ds_clnt = nfs4_find_or_create_ds_client(ds->ds_clp, hdr->inode); |
| 497 | if (IS_ERR(ds_clnt)) |
| 498 | return PNFS_NOT_ATTEMPTED; |
| 499 | |
Andy Adamson | 3a7936c | 2012-04-27 17:53:51 -0400 | [diff] [blame] | 500 | dprintk("%s USE DS: %s cl_count %d\n", __func__, |
| 501 | ds->ds_remotestr, atomic_read(&ds->ds_clp->cl_count)); |
Andy Adamson | dc70d7b | 2011-03-01 01:34:19 +0000 | [diff] [blame] | 502 | |
| 503 | /* No multipath support. Use first DS */ |
Andy Adamson | 3a7936c | 2012-04-27 17:53:51 -0400 | [diff] [blame] | 504 | atomic_inc(&ds->ds_clp->cl_count); |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 505 | hdr->ds_clp = ds->ds_clp; |
Weston Andros Adamson | 6cccbb6 | 2014-09-16 17:35:51 -0400 | [diff] [blame] | 506 | hdr->ds_commit_idx = idx; |
Andy Adamson | dc70d7b | 2011-03-01 01:34:19 +0000 | [diff] [blame] | 507 | fh = nfs4_fl_select_ds_fh(lseg, j); |
| 508 | if (fh) |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 509 | hdr->args.fh = fh; |
Andy Adamson | dc70d7b | 2011-03-01 01:34:19 +0000 | [diff] [blame] | 510 | |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 511 | hdr->args.offset = filelayout_get_dserver_offset(lseg, offset); |
| 512 | hdr->mds_offset = offset; |
Andy Adamson | dc70d7b | 2011-03-01 01:34:19 +0000 | [diff] [blame] | 513 | |
| 514 | /* Perform an asynchronous read to ds */ |
Peng Tao | 46a5ab4 | 2014-06-13 23:02:25 +0800 | [diff] [blame] | 515 | nfs_initiate_pgio(ds_clnt, hdr, hdr->cred, |
| 516 | NFS_PROTO(hdr->inode), &filelayout_read_call_ops, |
| 517 | 0, RPC_TASK_SOFTCONN); |
Andy Adamson | dc70d7b | 2011-03-01 01:34:19 +0000 | [diff] [blame] | 518 | return PNFS_ATTEMPTED; |
| 519 | } |
| 520 | |
Fred Isaman | a69aef1 | 2011-03-03 15:13:47 +0000 | [diff] [blame] | 521 | /* Perform async writes. */ |
Andy Adamson | 0382b74 | 2011-03-03 15:13:45 +0000 | [diff] [blame] | 522 | static enum pnfs_try_status |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 523 | filelayout_write_pagelist(struct nfs_pgio_header *hdr, int sync) |
Andy Adamson | 0382b74 | 2011-03-03 15:13:45 +0000 | [diff] [blame] | 524 | { |
Fred Isaman | cd84160 | 2012-04-20 14:47:44 -0400 | [diff] [blame] | 525 | struct pnfs_layout_segment *lseg = hdr->lseg; |
Fred Isaman | a69aef1 | 2011-03-03 15:13:47 +0000 | [diff] [blame] | 526 | struct nfs4_pnfs_ds *ds; |
Andy Adamson | 0e20162 | 2013-09-06 14:14:00 -0400 | [diff] [blame] | 527 | struct rpc_clnt *ds_clnt; |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 528 | loff_t offset = hdr->args.offset; |
Fred Isaman | a69aef1 | 2011-03-03 15:13:47 +0000 | [diff] [blame] | 529 | u32 j, idx; |
| 530 | struct nfs_fh *fh; |
Fred Isaman | a69aef1 | 2011-03-03 15:13:47 +0000 | [diff] [blame] | 531 | |
| 532 | /* Retrieve the correct rpc_client for the byte range */ |
| 533 | j = nfs4_fl_calc_j_index(lseg, offset); |
| 534 | idx = nfs4_fl_calc_ds_index(lseg, j); |
| 535 | ds = nfs4_fl_prepare_ds(lseg, idx); |
Andy Adamson | 90fecfc | 2012-04-27 17:53:43 -0400 | [diff] [blame] | 536 | if (!ds) |
Fred Isaman | a69aef1 | 2011-03-03 15:13:47 +0000 | [diff] [blame] | 537 | return PNFS_NOT_ATTEMPTED; |
Andy Adamson | 0e20162 | 2013-09-06 14:14:00 -0400 | [diff] [blame] | 538 | |
| 539 | ds_clnt = nfs4_find_or_create_ds_client(ds->ds_clp, hdr->inode); |
| 540 | if (IS_ERR(ds_clnt)) |
| 541 | return PNFS_NOT_ATTEMPTED; |
| 542 | |
Alexey Dobriyan | 5b5e092 | 2017-02-27 14:30:02 -0800 | [diff] [blame] | 543 | dprintk("%s ino %lu sync %d req %zu@%llu DS: %s cl_count %d\n", |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 544 | __func__, hdr->inode->i_ino, sync, (size_t) hdr->args.count, |
Andy Adamson | 3a7936c | 2012-04-27 17:53:51 -0400 | [diff] [blame] | 545 | offset, ds->ds_remotestr, atomic_read(&ds->ds_clp->cl_count)); |
Fred Isaman | a69aef1 | 2011-03-03 15:13:47 +0000 | [diff] [blame] | 546 | |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 547 | hdr->pgio_done_cb = filelayout_write_done_cb; |
Andy Adamson | 3a7936c | 2012-04-27 17:53:51 -0400 | [diff] [blame] | 548 | atomic_inc(&ds->ds_clp->cl_count); |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 549 | hdr->ds_clp = ds->ds_clp; |
Weston Andros Adamson | 6cccbb6 | 2014-09-16 17:35:51 -0400 | [diff] [blame] | 550 | hdr->ds_commit_idx = idx; |
Fred Isaman | a69aef1 | 2011-03-03 15:13:47 +0000 | [diff] [blame] | 551 | fh = nfs4_fl_select_ds_fh(lseg, j); |
| 552 | if (fh) |
Weston Andros Adamson | d45f60c | 2014-06-09 11:48:35 -0400 | [diff] [blame] | 553 | hdr->args.fh = fh; |
| 554 | hdr->args.offset = filelayout_get_dserver_offset(lseg, offset); |
Fred Isaman | a69aef1 | 2011-03-03 15:13:47 +0000 | [diff] [blame] | 555 | |
| 556 | /* Perform an asynchronous write */ |
Peng Tao | 46a5ab4 | 2014-06-13 23:02:25 +0800 | [diff] [blame] | 557 | nfs_initiate_pgio(ds_clnt, hdr, hdr->cred, |
| 558 | NFS_PROTO(hdr->inode), &filelayout_write_call_ops, |
| 559 | sync, RPC_TASK_SOFTCONN); |
Fred Isaman | a69aef1 | 2011-03-03 15:13:47 +0000 | [diff] [blame] | 560 | return PNFS_ATTEMPTED; |
Andy Adamson | 0382b74 | 2011-03-03 15:13:45 +0000 | [diff] [blame] | 561 | } |
| 562 | |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 563 | static int |
Andy Adamson | 8d40b0f | 2017-03-20 18:07:02 -0400 | [diff] [blame] | 564 | filelayout_check_deviceid(struct pnfs_layout_hdr *lo, |
| 565 | struct nfs4_filelayout_segment *fl, |
| 566 | gfp_t gfp_flags) |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 567 | { |
Benny Halevy | a1eaecb | 2011-05-19 22:14:47 -0400 | [diff] [blame] | 568 | struct nfs4_deviceid_node *d; |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 569 | struct nfs4_file_layout_dsaddr *dsaddr; |
| 570 | int status = -EINVAL; |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 571 | |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 572 | /* find and reference the deviceid */ |
Andy Adamson | 629dc87 | 2017-03-20 18:07:01 -0400 | [diff] [blame] | 573 | d = nfs4_find_get_deviceid(NFS_SERVER(lo->plh_inode), &fl->deviceid, |
Christoph Hellwig | 661373b | 2014-09-02 21:27:57 -0700 | [diff] [blame] | 574 | lo->plh_lc_cred, gfp_flags); |
| 575 | if (d == NULL) |
| 576 | goto out; |
| 577 | |
| 578 | dsaddr = container_of(d, struct nfs4_file_layout_dsaddr, id_node); |
Trond Myklebust | 1dfed27 | 2012-09-18 19:51:12 -0400 | [diff] [blame] | 579 | /* Found deviceid is unavailable */ |
| 580 | if (filelayout_test_devid_unavailable(&dsaddr->id_node)) |
Christoph Hellwig | 661373b | 2014-09-02 21:27:57 -0700 | [diff] [blame] | 581 | goto out_put; |
Andy Adamson | c47abcf | 2011-06-15 17:52:40 -0400 | [diff] [blame] | 582 | |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 583 | fl->dsaddr = dsaddr; |
| 584 | |
Chuck Lever | e414966 | 2011-10-25 12:18:03 -0400 | [diff] [blame] | 585 | if (fl->first_stripe_index >= dsaddr->stripe_count) { |
| 586 | dprintk("%s Bad first_stripe_index %u\n", |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 587 | __func__, fl->first_stripe_index); |
| 588 | goto out_put; |
| 589 | } |
| 590 | |
| 591 | if ((fl->stripe_type == STRIPE_SPARSE && |
| 592 | fl->num_fh > 1 && fl->num_fh != dsaddr->ds_num) || |
| 593 | (fl->stripe_type == STRIPE_DENSE && |
| 594 | fl->num_fh != dsaddr->stripe_count)) { |
| 595 | dprintk("%s num_fh %u not valid for given packing\n", |
| 596 | __func__, fl->num_fh); |
| 597 | goto out_put; |
| 598 | } |
Andy Adamson | 8d40b0f | 2017-03-20 18:07:02 -0400 | [diff] [blame] | 599 | status = 0; |
| 600 | out: |
| 601 | return status; |
| 602 | out_put: |
| 603 | nfs4_fl_put_deviceid(dsaddr); |
| 604 | goto out; |
| 605 | } |
| 606 | |
| 607 | /* |
| 608 | * filelayout_check_layout() |
| 609 | * |
| 610 | * Make sure layout segment parameters are sane WRT the device. |
| 611 | * At this point no generic layer initialization of the lseg has occurred, |
| 612 | * and nothing has been added to the layout_hdr cache. |
| 613 | * |
| 614 | */ |
| 615 | static int |
| 616 | filelayout_check_layout(struct pnfs_layout_hdr *lo, |
| 617 | struct nfs4_filelayout_segment *fl, |
| 618 | struct nfs4_layoutget_res *lgr, |
| 619 | gfp_t gfp_flags) |
| 620 | { |
| 621 | int status = -EINVAL; |
| 622 | |
| 623 | dprintk("--> %s\n", __func__); |
| 624 | |
| 625 | /* FIXME: remove this check when layout segment support is added */ |
| 626 | if (lgr->range.offset != 0 || |
| 627 | lgr->range.length != NFS4_MAX_UINT64) { |
| 628 | dprintk("%s Only whole file layouts supported. Use MDS i/o\n", |
| 629 | __func__); |
| 630 | goto out; |
| 631 | } |
| 632 | |
| 633 | if (fl->pattern_offset > lgr->range.offset) { |
| 634 | dprintk("%s pattern_offset %lld too large\n", |
| 635 | __func__, fl->pattern_offset); |
| 636 | goto out; |
| 637 | } |
| 638 | |
| 639 | if (!fl->stripe_unit) { |
| 640 | dprintk("%s Invalid stripe unit (%u)\n", |
| 641 | __func__, fl->stripe_unit); |
| 642 | goto out; |
| 643 | } |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 644 | |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 645 | status = 0; |
| 646 | out: |
| 647 | dprintk("--> %s returns %d\n", __func__, status); |
| 648 | return status; |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 649 | } |
| 650 | |
Kinglong Mee | 3ec0c97 | 2015-09-14 20:12:21 +0800 | [diff] [blame] | 651 | static void _filelayout_free_lseg(struct nfs4_filelayout_segment *fl) |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 652 | { |
| 653 | int i; |
| 654 | |
Kinglong Mee | 3ec0c97 | 2015-09-14 20:12:21 +0800 | [diff] [blame] | 655 | if (fl->fh_array) { |
| 656 | for (i = 0; i < fl->num_fh; i++) { |
| 657 | if (!fl->fh_array[i]) |
| 658 | break; |
| 659 | kfree(fl->fh_array[i]); |
| 660 | } |
| 661 | kfree(fl->fh_array); |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 662 | } |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 663 | kfree(fl); |
| 664 | } |
| 665 | |
| 666 | static int |
| 667 | filelayout_decode_layout(struct pnfs_layout_hdr *flo, |
| 668 | struct nfs4_filelayout_segment *fl, |
| 669 | struct nfs4_layoutget_res *lgr, |
Trond Myklebust | a75b9df | 2011-05-11 18:00:51 -0400 | [diff] [blame] | 670 | gfp_t gfp_flags) |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 671 | { |
Weston Andros Adamson | 35124a0 | 2011-03-24 16:48:21 -0400 | [diff] [blame] | 672 | struct xdr_stream stream; |
Benny Halevy | f7da7a1 | 2011-05-19 14:16:47 -0400 | [diff] [blame] | 673 | struct xdr_buf buf; |
Weston Andros Adamson | 35124a0 | 2011-03-24 16:48:21 -0400 | [diff] [blame] | 674 | struct page *scratch; |
| 675 | __be32 *p; |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 676 | uint32_t nfl_util; |
| 677 | int i; |
| 678 | |
| 679 | dprintk("%s: set_layout_map Begin\n", __func__); |
| 680 | |
Trond Myklebust | a75b9df | 2011-05-11 18:00:51 -0400 | [diff] [blame] | 681 | scratch = alloc_page(gfp_flags); |
Weston Andros Adamson | 35124a0 | 2011-03-24 16:48:21 -0400 | [diff] [blame] | 682 | if (!scratch) |
| 683 | return -ENOMEM; |
| 684 | |
Benny Halevy | f7da7a1 | 2011-05-19 14:16:47 -0400 | [diff] [blame] | 685 | xdr_init_decode_pages(&stream, &buf, lgr->layoutp->pages, lgr->layoutp->len); |
Weston Andros Adamson | 35124a0 | 2011-03-24 16:48:21 -0400 | [diff] [blame] | 686 | xdr_set_scratch_buffer(&stream, page_address(scratch), PAGE_SIZE); |
| 687 | |
| 688 | /* 20 = ufl_util (4), first_stripe_index (4), pattern_offset (8), |
| 689 | * num_fh (4) */ |
| 690 | p = xdr_inline_decode(&stream, NFS4_DEVICEID4_SIZE + 20); |
| 691 | if (unlikely(!p)) |
| 692 | goto out_err; |
| 693 | |
Andy Adamson | 629dc87 | 2017-03-20 18:07:01 -0400 | [diff] [blame] | 694 | memcpy(&fl->deviceid, p, sizeof(fl->deviceid)); |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 695 | p += XDR_QUADLEN(NFS4_DEVICEID4_SIZE); |
Andy Adamson | 629dc87 | 2017-03-20 18:07:01 -0400 | [diff] [blame] | 696 | nfs4_print_deviceid(&fl->deviceid); |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 697 | |
| 698 | nfl_util = be32_to_cpup(p++); |
| 699 | if (nfl_util & NFL4_UFLG_COMMIT_THRU_MDS) |
| 700 | fl->commit_through_mds = 1; |
| 701 | if (nfl_util & NFL4_UFLG_DENSE) |
| 702 | fl->stripe_type = STRIPE_DENSE; |
| 703 | else |
| 704 | fl->stripe_type = STRIPE_SPARSE; |
| 705 | fl->stripe_unit = nfl_util & ~NFL4_UFLG_MASK; |
| 706 | |
| 707 | fl->first_stripe_index = be32_to_cpup(p++); |
| 708 | p = xdr_decode_hyper(p, &fl->pattern_offset); |
| 709 | fl->num_fh = be32_to_cpup(p++); |
| 710 | |
| 711 | dprintk("%s: nfl_util 0x%X num_fh %u fsi %u po %llu\n", |
| 712 | __func__, nfl_util, fl->num_fh, fl->first_stripe_index, |
| 713 | fl->pattern_offset); |
| 714 | |
Andy Adamson | cec765c | 2011-06-13 18:36:17 -0400 | [diff] [blame] | 715 | /* Note that a zero value for num_fh is legal for STRIPE_SPARSE. |
| 716 | * Futher checking is done in filelayout_check_layout */ |
Chuck Lever | e414966 | 2011-10-25 12:18:03 -0400 | [diff] [blame] | 717 | if (fl->num_fh > |
Andy Adamson | cec765c | 2011-06-13 18:36:17 -0400 | [diff] [blame] | 718 | max(NFS4_PNFS_MAX_STRIPE_CNT, NFS4_PNFS_MAX_MULTI_CNT)) |
Weston Andros Adamson | 35124a0 | 2011-03-24 16:48:21 -0400 | [diff] [blame] | 719 | goto out_err; |
| 720 | |
Andy Adamson | cec765c | 2011-06-13 18:36:17 -0400 | [diff] [blame] | 721 | if (fl->num_fh > 0) { |
Trond Myklebust | 1813bad | 2012-10-11 14:36:52 -0400 | [diff] [blame] | 722 | fl->fh_array = kcalloc(fl->num_fh, sizeof(fl->fh_array[0]), |
Andy Adamson | cec765c | 2011-06-13 18:36:17 -0400 | [diff] [blame] | 723 | gfp_flags); |
| 724 | if (!fl->fh_array) |
| 725 | goto out_err; |
| 726 | } |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 727 | |
| 728 | for (i = 0; i < fl->num_fh; i++) { |
| 729 | /* Do we want to use a mempool here? */ |
Trond Myklebust | a75b9df | 2011-05-11 18:00:51 -0400 | [diff] [blame] | 730 | fl->fh_array[i] = kmalloc(sizeof(struct nfs_fh), gfp_flags); |
Weston Andros Adamson | 35124a0 | 2011-03-24 16:48:21 -0400 | [diff] [blame] | 731 | if (!fl->fh_array[i]) |
Kinglong Mee | 3ec0c97 | 2015-09-14 20:12:21 +0800 | [diff] [blame] | 732 | goto out_err; |
Weston Andros Adamson | 35124a0 | 2011-03-24 16:48:21 -0400 | [diff] [blame] | 733 | |
| 734 | p = xdr_inline_decode(&stream, 4); |
| 735 | if (unlikely(!p)) |
Kinglong Mee | 3ec0c97 | 2015-09-14 20:12:21 +0800 | [diff] [blame] | 736 | goto out_err; |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 737 | fl->fh_array[i]->size = be32_to_cpup(p++); |
| 738 | if (sizeof(struct nfs_fh) < fl->fh_array[i]->size) { |
Weston Andros Adamson | f9fd2d9 | 2012-01-26 13:32:22 -0500 | [diff] [blame] | 739 | printk(KERN_ERR "NFS: Too big fh %d received %d\n", |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 740 | i, fl->fh_array[i]->size); |
Kinglong Mee | 3ec0c97 | 2015-09-14 20:12:21 +0800 | [diff] [blame] | 741 | goto out_err; |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 742 | } |
Weston Andros Adamson | 35124a0 | 2011-03-24 16:48:21 -0400 | [diff] [blame] | 743 | |
| 744 | p = xdr_inline_decode(&stream, fl->fh_array[i]->size); |
| 745 | if (unlikely(!p)) |
Kinglong Mee | 3ec0c97 | 2015-09-14 20:12:21 +0800 | [diff] [blame] | 746 | goto out_err; |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 747 | memcpy(fl->fh_array[i]->data, p, fl->fh_array[i]->size); |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 748 | dprintk("DEBUG: %s: fh len %d\n", __func__, |
| 749 | fl->fh_array[i]->size); |
| 750 | } |
| 751 | |
Weston Andros Adamson | 35124a0 | 2011-03-24 16:48:21 -0400 | [diff] [blame] | 752 | __free_page(scratch); |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 753 | return 0; |
Weston Andros Adamson | 35124a0 | 2011-03-24 16:48:21 -0400 | [diff] [blame] | 754 | |
Weston Andros Adamson | 35124a0 | 2011-03-24 16:48:21 -0400 | [diff] [blame] | 755 | out_err: |
| 756 | __free_page(scratch); |
| 757 | return -EIO; |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 758 | } |
| 759 | |
Fred Isaman | c879513 | 2011-03-23 13:27:49 +0000 | [diff] [blame] | 760 | static void |
| 761 | filelayout_free_lseg(struct pnfs_layout_segment *lseg) |
| 762 | { |
| 763 | struct nfs4_filelayout_segment *fl = FILELAYOUT_LSEG(lseg); |
| 764 | |
| 765 | dprintk("--> %s\n", __func__); |
| 766 | nfs4_fl_put_deviceid(fl->dsaddr); |
Fred Isaman | 799ba8d | 2012-04-20 14:47:38 -0400 | [diff] [blame] | 767 | /* This assumes a single RW lseg */ |
| 768 | if (lseg->pls_range.iomode == IOMODE_RW) { |
| 769 | struct nfs4_filelayout *flo; |
| 770 | |
| 771 | flo = FILELAYOUT_FROM_HDR(lseg->pls_layout); |
| 772 | flo->commit_info.nbuckets = 0; |
| 773 | kfree(flo->commit_info.buckets); |
| 774 | flo->commit_info.buckets = NULL; |
| 775 | } |
Fred Isaman | c879513 | 2011-03-23 13:27:49 +0000 | [diff] [blame] | 776 | _filelayout_free_lseg(fl); |
| 777 | } |
| 778 | |
Fred Isaman | 799ba8d | 2012-04-20 14:47:38 -0400 | [diff] [blame] | 779 | static int |
| 780 | filelayout_alloc_commit_info(struct pnfs_layout_segment *lseg, |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 781 | struct nfs_commit_info *cinfo, |
Fred Isaman | 799ba8d | 2012-04-20 14:47:38 -0400 | [diff] [blame] | 782 | gfp_t gfp_flags) |
| 783 | { |
| 784 | struct nfs4_filelayout_segment *fl = FILELAYOUT_LSEG(lseg); |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 785 | struct pnfs_commit_bucket *buckets; |
Weston Andros Adamson | dd7663e | 2014-05-15 11:56:49 -0400 | [diff] [blame] | 786 | int size, i; |
Fred Isaman | 799ba8d | 2012-04-20 14:47:38 -0400 | [diff] [blame] | 787 | |
| 788 | if (fl->commit_through_mds) |
| 789 | return 0; |
Weston Andros Adamson | dd7663e | 2014-05-15 11:56:49 -0400 | [diff] [blame] | 790 | |
| 791 | size = (fl->stripe_type == STRIPE_SPARSE) ? |
| 792 | fl->dsaddr->ds_num : fl->dsaddr->stripe_count; |
| 793 | |
| 794 | if (cinfo->ds->nbuckets >= size) { |
Fred Isaman | 799ba8d | 2012-04-20 14:47:38 -0400 | [diff] [blame] | 795 | /* This assumes there is only one IOMODE_RW lseg. What |
| 796 | * we really want to do is have a layout_hdr level |
| 797 | * dictionary of <multipath_list4, fh> keys, each |
| 798 | * associated with a struct list_head, populated by calls |
| 799 | * to filelayout_write_pagelist(). |
| 800 | * */ |
| 801 | return 0; |
| 802 | } |
| 803 | |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 804 | buckets = kcalloc(size, sizeof(struct pnfs_commit_bucket), |
Fred Isaman | 799ba8d | 2012-04-20 14:47:38 -0400 | [diff] [blame] | 805 | gfp_flags); |
| 806 | if (!buckets) |
| 807 | return -ENOMEM; |
Weston Andros Adamson | dd7663e | 2014-05-15 11:56:49 -0400 | [diff] [blame] | 808 | for (i = 0; i < size; i++) { |
| 809 | INIT_LIST_HEAD(&buckets[i].written); |
| 810 | INIT_LIST_HEAD(&buckets[i].committing); |
Weston Andros Adamson | 5002c58 | 2014-05-15 11:56:54 -0400 | [diff] [blame] | 811 | /* mark direct verifier as unset */ |
| 812 | buckets[i].direct_verf.committed = NFS_INVALID_STABLE_HOW; |
Fred Isaman | 799ba8d | 2012-04-20 14:47:38 -0400 | [diff] [blame] | 813 | } |
Weston Andros Adamson | dd7663e | 2014-05-15 11:56:49 -0400 | [diff] [blame] | 814 | |
Dave Wysochanski | fe238e6 | 2016-04-01 13:45:09 -0400 | [diff] [blame] | 815 | spin_lock(&cinfo->inode->i_lock); |
Weston Andros Adamson | dd7663e | 2014-05-15 11:56:49 -0400 | [diff] [blame] | 816 | if (cinfo->ds->nbuckets >= size) |
| 817 | goto out; |
| 818 | for (i = 0; i < cinfo->ds->nbuckets; i++) { |
| 819 | list_splice(&cinfo->ds->buckets[i].written, |
| 820 | &buckets[i].written); |
| 821 | list_splice(&cinfo->ds->buckets[i].committing, |
| 822 | &buckets[i].committing); |
Weston Andros Adamson | 5002c58 | 2014-05-15 11:56:54 -0400 | [diff] [blame] | 823 | buckets[i].direct_verf.committed = |
| 824 | cinfo->ds->buckets[i].direct_verf.committed; |
Weston Andros Adamson | dd7663e | 2014-05-15 11:56:49 -0400 | [diff] [blame] | 825 | buckets[i].wlseg = cinfo->ds->buckets[i].wlseg; |
| 826 | buckets[i].clseg = cinfo->ds->buckets[i].clseg; |
| 827 | } |
| 828 | swap(cinfo->ds->buckets, buckets); |
| 829 | cinfo->ds->nbuckets = size; |
| 830 | out: |
Dave Wysochanski | fe238e6 | 2016-04-01 13:45:09 -0400 | [diff] [blame] | 831 | spin_unlock(&cinfo->inode->i_lock); |
Weston Andros Adamson | dd7663e | 2014-05-15 11:56:49 -0400 | [diff] [blame] | 832 | kfree(buckets); |
| 833 | return 0; |
Fred Isaman | 799ba8d | 2012-04-20 14:47:38 -0400 | [diff] [blame] | 834 | } |
| 835 | |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 836 | static struct pnfs_layout_segment * |
| 837 | filelayout_alloc_lseg(struct pnfs_layout_hdr *layoutid, |
Trond Myklebust | a75b9df | 2011-05-11 18:00:51 -0400 | [diff] [blame] | 838 | struct nfs4_layoutget_res *lgr, |
| 839 | gfp_t gfp_flags) |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 840 | { |
| 841 | struct nfs4_filelayout_segment *fl; |
| 842 | int rc; |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 843 | |
| 844 | dprintk("--> %s\n", __func__); |
Trond Myklebust | a75b9df | 2011-05-11 18:00:51 -0400 | [diff] [blame] | 845 | fl = kzalloc(sizeof(*fl), gfp_flags); |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 846 | if (!fl) |
| 847 | return NULL; |
| 848 | |
Andy Adamson | 629dc87 | 2017-03-20 18:07:01 -0400 | [diff] [blame] | 849 | rc = filelayout_decode_layout(layoutid, fl, lgr, gfp_flags); |
| 850 | if (rc != 0 || filelayout_check_layout(layoutid, fl, lgr, gfp_flags)) { |
Andy Adamson | 16b374c | 2010-10-20 00:18:04 -0400 | [diff] [blame] | 851 | _filelayout_free_lseg(fl); |
| 852 | return NULL; |
| 853 | } |
| 854 | return &fl->generic_hdr; |
| 855 | } |
| 856 | |
Fred Isaman | 94ad1c8 | 2011-03-01 01:34:14 +0000 | [diff] [blame] | 857 | /* |
| 858 | * filelayout_pg_test(). Called by nfs_can_coalesce_requests() |
| 859 | * |
Weston Andros Adamson | b4fdac1 | 2014-05-15 11:56:43 -0400 | [diff] [blame] | 860 | * Return 0 if @req cannot be coalesced into @pgio, otherwise return the number |
| 861 | * of bytes (maximum @req->wb_bytes) that can be coalesced. |
Fred Isaman | 94ad1c8 | 2011-03-01 01:34:14 +0000 | [diff] [blame] | 862 | */ |
Weston Andros Adamson | b4fdac1 | 2014-05-15 11:56:43 -0400 | [diff] [blame] | 863 | static size_t |
Fred Isaman | 94ad1c8 | 2011-03-01 01:34:14 +0000 | [diff] [blame] | 864 | filelayout_pg_test(struct nfs_pageio_descriptor *pgio, struct nfs_page *prev, |
| 865 | struct nfs_page *req) |
| 866 | { |
Weston Andros Adamson | 0f9c429 | 2014-05-15 11:56:51 -0400 | [diff] [blame] | 867 | unsigned int size; |
Fred Isaman | 94ad1c8 | 2011-03-01 01:34:14 +0000 | [diff] [blame] | 868 | u64 p_stripe, r_stripe; |
Weston Andros Adamson | c619427 | 2014-05-15 11:56:56 -0400 | [diff] [blame] | 869 | u32 stripe_offset; |
| 870 | u64 segment_offset = pgio->pg_lseg->pls_range.offset; |
| 871 | u32 stripe_unit = FILELAYOUT_LSEG(pgio->pg_lseg)->stripe_unit; |
Fred Isaman | 94ad1c8 | 2011-03-01 01:34:14 +0000 | [diff] [blame] | 872 | |
Weston Andros Adamson | 0f9c429 | 2014-05-15 11:56:51 -0400 | [diff] [blame] | 873 | /* calls nfs_generic_pg_test */ |
| 874 | size = pnfs_generic_pg_test(pgio, prev, req); |
| 875 | if (!size) |
Weston Andros Adamson | b4fdac1 | 2014-05-15 11:56:43 -0400 | [diff] [blame] | 876 | return 0; |
Benny Halevy | 89a58e3 | 2011-05-25 20:54:40 +0300 | [diff] [blame] | 877 | |
Weston Andros Adamson | c619427 | 2014-05-15 11:56:56 -0400 | [diff] [blame] | 878 | /* see if req and prev are in the same stripe */ |
Weston Andros Adamson | 0f9c429 | 2014-05-15 11:56:51 -0400 | [diff] [blame] | 879 | if (prev) { |
Weston Andros Adamson | c619427 | 2014-05-15 11:56:56 -0400 | [diff] [blame] | 880 | p_stripe = (u64)req_offset(prev) - segment_offset; |
| 881 | r_stripe = (u64)req_offset(req) - segment_offset; |
Weston Andros Adamson | 0f9c429 | 2014-05-15 11:56:51 -0400 | [diff] [blame] | 882 | do_div(p_stripe, stripe_unit); |
| 883 | do_div(r_stripe, stripe_unit); |
Fred Isaman | 94ad1c8 | 2011-03-01 01:34:14 +0000 | [diff] [blame] | 884 | |
Weston Andros Adamson | 0f9c429 | 2014-05-15 11:56:51 -0400 | [diff] [blame] | 885 | if (p_stripe != r_stripe) |
| 886 | return 0; |
| 887 | } |
Weston Andros Adamson | c619427 | 2014-05-15 11:56:56 -0400 | [diff] [blame] | 888 | |
| 889 | /* calculate remaining bytes in the current stripe */ |
| 890 | div_u64_rem((u64)req_offset(req) - segment_offset, |
| 891 | stripe_unit, |
| 892 | &stripe_offset); |
| 893 | WARN_ON_ONCE(stripe_offset > stripe_unit); |
| 894 | if (stripe_offset >= stripe_unit) |
| 895 | return 0; |
| 896 | return min(stripe_unit - (unsigned int)stripe_offset, size); |
Fred Isaman | 94ad1c8 | 2011-03-01 01:34:14 +0000 | [diff] [blame] | 897 | } |
| 898 | |
Andy Adamson | 8d40b0f | 2017-03-20 18:07:02 -0400 | [diff] [blame] | 899 | static struct pnfs_layout_segment * |
| 900 | fl_pnfs_update_layout(struct inode *ino, |
| 901 | struct nfs_open_context *ctx, |
| 902 | loff_t pos, |
| 903 | u64 count, |
| 904 | enum pnfs_iomode iomode, |
| 905 | bool strict_iomode, |
| 906 | gfp_t gfp_flags) |
| 907 | { |
| 908 | struct pnfs_layout_segment *lseg = NULL; |
| 909 | struct pnfs_layout_hdr *lo; |
| 910 | struct nfs4_filelayout_segment *fl; |
| 911 | int status; |
| 912 | |
| 913 | lseg = pnfs_update_layout(ino, ctx, pos, count, iomode, strict_iomode, |
| 914 | gfp_flags); |
| 915 | if (!lseg) |
| 916 | lseg = ERR_PTR(-ENOMEM); |
| 917 | if (IS_ERR(lseg)) |
| 918 | goto out; |
| 919 | |
| 920 | lo = NFS_I(ino)->layout; |
| 921 | fl = FILELAYOUT_LSEG(lseg); |
| 922 | |
| 923 | status = filelayout_check_deviceid(lo, fl, gfp_flags); |
Artem Savkov | 209aa23 | 2017-04-21 21:35:51 +0200 | [diff] [blame] | 924 | if (status) { |
Andy Adamson | 8d40b0f | 2017-03-20 18:07:02 -0400 | [diff] [blame] | 925 | pnfs_put_lseg(lseg); |
Artem Savkov | 209aa23 | 2017-04-21 21:35:51 +0200 | [diff] [blame] | 926 | lseg = ERR_PTR(status); |
| 927 | } |
| 928 | out: |
Andy Adamson | 8d40b0f | 2017-03-20 18:07:02 -0400 | [diff] [blame] | 929 | return lseg; |
| 930 | } |
| 931 | |
Trond Myklebust | 1728017 | 2012-03-11 13:11:00 -0400 | [diff] [blame] | 932 | static void |
Andy Adamson | 7c24d94 | 2011-06-13 18:22:38 -0400 | [diff] [blame] | 933 | filelayout_pg_init_read(struct nfs_pageio_descriptor *pgio, |
| 934 | struct nfs_page *req) |
| 935 | { |
Trond Myklebust | b3230e8 | 2017-04-25 10:56:19 -0400 | [diff] [blame] | 936 | pnfs_generic_pg_check_layout(pgio); |
Peng Tao | d600ad1 | 2015-12-04 02:57:48 +0800 | [diff] [blame] | 937 | if (!pgio->pg_lseg) { |
Andy Adamson | 8d40b0f | 2017-03-20 18:07:02 -0400 | [diff] [blame] | 938 | pgio->pg_lseg = fl_pnfs_update_layout(pgio->pg_inode, |
| 939 | req->wb_context, |
| 940 | 0, |
| 941 | NFS4_MAX_UINT64, |
| 942 | IOMODE_READ, |
| 943 | false, |
| 944 | GFP_KERNEL); |
Peng Tao | d600ad1 | 2015-12-04 02:57:48 +0800 | [diff] [blame] | 945 | if (IS_ERR(pgio->pg_lseg)) { |
| 946 | pgio->pg_error = PTR_ERR(pgio->pg_lseg); |
| 947 | pgio->pg_lseg = NULL; |
| 948 | return; |
| 949 | } |
| 950 | } |
Andy Adamson | 7c24d94 | 2011-06-13 18:22:38 -0400 | [diff] [blame] | 951 | /* If no lseg, fall back to read through mds */ |
| 952 | if (pgio->pg_lseg == NULL) |
Trond Myklebust | 1f94535 | 2011-07-13 15:59:57 -0400 | [diff] [blame] | 953 | nfs_pageio_reset_read_mds(pgio); |
Andy Adamson | 7c24d94 | 2011-06-13 18:22:38 -0400 | [diff] [blame] | 954 | } |
| 955 | |
Trond Myklebust | 1728017 | 2012-03-11 13:11:00 -0400 | [diff] [blame] | 956 | static void |
Andy Adamson | 7c24d94 | 2011-06-13 18:22:38 -0400 | [diff] [blame] | 957 | filelayout_pg_init_write(struct nfs_pageio_descriptor *pgio, |
| 958 | struct nfs_page *req) |
| 959 | { |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 960 | struct nfs_commit_info cinfo; |
Fred Isaman | 799ba8d | 2012-04-20 14:47:38 -0400 | [diff] [blame] | 961 | int status; |
| 962 | |
Trond Myklebust | b3230e8 | 2017-04-25 10:56:19 -0400 | [diff] [blame] | 963 | pnfs_generic_pg_check_layout(pgio); |
Peng Tao | d600ad1 | 2015-12-04 02:57:48 +0800 | [diff] [blame] | 964 | if (!pgio->pg_lseg) { |
Andy Adamson | 8d40b0f | 2017-03-20 18:07:02 -0400 | [diff] [blame] | 965 | pgio->pg_lseg = fl_pnfs_update_layout(pgio->pg_inode, |
| 966 | req->wb_context, |
| 967 | 0, |
| 968 | NFS4_MAX_UINT64, |
| 969 | IOMODE_RW, |
| 970 | false, |
| 971 | GFP_NOFS); |
Peng Tao | d600ad1 | 2015-12-04 02:57:48 +0800 | [diff] [blame] | 972 | if (IS_ERR(pgio->pg_lseg)) { |
| 973 | pgio->pg_error = PTR_ERR(pgio->pg_lseg); |
| 974 | pgio->pg_lseg = NULL; |
| 975 | return; |
| 976 | } |
| 977 | } |
| 978 | |
Andy Adamson | 7c24d94 | 2011-06-13 18:22:38 -0400 | [diff] [blame] | 979 | /* If no lseg, fall back to write through mds */ |
| 980 | if (pgio->pg_lseg == NULL) |
Fred Isaman | 799ba8d | 2012-04-20 14:47:38 -0400 | [diff] [blame] | 981 | goto out_mds; |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 982 | nfs_init_cinfo(&cinfo, pgio->pg_inode, pgio->pg_dreq); |
| 983 | status = filelayout_alloc_commit_info(pgio->pg_lseg, &cinfo, GFP_NOFS); |
Fred Isaman | 799ba8d | 2012-04-20 14:47:38 -0400 | [diff] [blame] | 984 | if (status < 0) { |
Trond Myklebust | 9369a43 | 2012-09-18 20:57:08 -0400 | [diff] [blame] | 985 | pnfs_put_lseg(pgio->pg_lseg); |
Fred Isaman | 799ba8d | 2012-04-20 14:47:38 -0400 | [diff] [blame] | 986 | pgio->pg_lseg = NULL; |
| 987 | goto out_mds; |
| 988 | } |
| 989 | return; |
| 990 | out_mds: |
| 991 | nfs_pageio_reset_write_mds(pgio); |
Andy Adamson | 7c24d94 | 2011-06-13 18:22:38 -0400 | [diff] [blame] | 992 | } |
| 993 | |
Trond Myklebust | 1751c36 | 2011-06-10 13:30:23 -0400 | [diff] [blame] | 994 | static const struct nfs_pageio_ops filelayout_pg_read_ops = { |
Andy Adamson | 7c24d94 | 2011-06-13 18:22:38 -0400 | [diff] [blame] | 995 | .pg_init = filelayout_pg_init_read, |
Trond Myklebust | 1751c36 | 2011-06-10 13:30:23 -0400 | [diff] [blame] | 996 | .pg_test = filelayout_pg_test, |
Trond Myklebust | 493292d | 2011-07-13 15:58:28 -0400 | [diff] [blame] | 997 | .pg_doio = pnfs_generic_pg_readpages, |
Weston Andros Adamson | 180bb5e | 2014-09-10 15:48:01 -0400 | [diff] [blame] | 998 | .pg_cleanup = pnfs_generic_pg_cleanup, |
Trond Myklebust | 1751c36 | 2011-06-10 13:30:23 -0400 | [diff] [blame] | 999 | }; |
| 1000 | |
| 1001 | static const struct nfs_pageio_ops filelayout_pg_write_ops = { |
Andy Adamson | 7c24d94 | 2011-06-13 18:22:38 -0400 | [diff] [blame] | 1002 | .pg_init = filelayout_pg_init_write, |
Trond Myklebust | 1751c36 | 2011-06-10 13:30:23 -0400 | [diff] [blame] | 1003 | .pg_test = filelayout_pg_test, |
Trond Myklebust | dce8129 | 2011-07-13 15:59:19 -0400 | [diff] [blame] | 1004 | .pg_doio = pnfs_generic_pg_writepages, |
Weston Andros Adamson | 180bb5e | 2014-09-10 15:48:01 -0400 | [diff] [blame] | 1005 | .pg_cleanup = pnfs_generic_pg_cleanup, |
Trond Myklebust | 1751c36 | 2011-06-10 13:30:23 -0400 | [diff] [blame] | 1006 | }; |
| 1007 | |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 1008 | static u32 select_bucket_index(struct nfs4_filelayout_segment *fl, u32 j) |
| 1009 | { |
| 1010 | if (fl->stripe_type == STRIPE_SPARSE) |
| 1011 | return nfs4_fl_calc_ds_index(&fl->generic_hdr, j); |
| 1012 | else |
| 1013 | return j; |
| 1014 | } |
| 1015 | |
Peng Tao | c8a3292 | 2014-07-03 13:07:45 +0800 | [diff] [blame] | 1016 | static void |
| 1017 | filelayout_mark_request_commit(struct nfs_page *req, |
| 1018 | struct pnfs_layout_segment *lseg, |
Weston Andros Adamson | b57ff13 | 2014-09-05 18:20:21 -0400 | [diff] [blame] | 1019 | struct nfs_commit_info *cinfo, |
| 1020 | u32 ds_commit_idx) |
Peng Tao | c8a3292 | 2014-07-03 13:07:45 +0800 | [diff] [blame] | 1021 | |
Fred Isaman | d6d6dc7 | 2012-03-08 17:29:35 -0500 | [diff] [blame] | 1022 | { |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 1023 | struct nfs4_filelayout_segment *fl = FILELAYOUT_LSEG(lseg); |
| 1024 | u32 i, j; |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 1025 | |
Peng Tao | c8a3292 | 2014-07-03 13:07:45 +0800 | [diff] [blame] | 1026 | if (fl->commit_through_mds) { |
Anna Schumaker | 6272dcc | 2016-01-15 16:54:15 -0500 | [diff] [blame] | 1027 | nfs_request_add_commit_list(req, cinfo); |
Tom Haynes | 338d00c | 2015-02-17 14:58:15 -0800 | [diff] [blame] | 1028 | } else { |
| 1029 | /* Note that we are calling nfs4_fl_calc_j_index on each page |
| 1030 | * that ends up being committed to a data server. An attractive |
| 1031 | * alternative is to add a field to nfs_write_data and nfs_page |
| 1032 | * to store the value calculated in filelayout_write_pagelist |
| 1033 | * and just use that here. |
Fred Isaman | d6d6dc7 | 2012-03-08 17:29:35 -0500 | [diff] [blame] | 1034 | */ |
Tom Haynes | 338d00c | 2015-02-17 14:58:15 -0800 | [diff] [blame] | 1035 | j = nfs4_fl_calc_j_index(lseg, req_offset(req)); |
| 1036 | i = select_bucket_index(fl, j); |
| 1037 | pnfs_layout_mark_request_commit(req, lseg, cinfo, i); |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 1038 | } |
Trond Myklebust | 8dd3775 | 2012-03-15 17:16:40 -0400 | [diff] [blame] | 1039 | } |
| 1040 | |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 1041 | static u32 calc_ds_index_from_commit(struct pnfs_layout_segment *lseg, u32 i) |
| 1042 | { |
| 1043 | struct nfs4_filelayout_segment *flseg = FILELAYOUT_LSEG(lseg); |
| 1044 | |
| 1045 | if (flseg->stripe_type == STRIPE_SPARSE) |
| 1046 | return i; |
| 1047 | else |
| 1048 | return nfs4_fl_calc_ds_index(lseg, i); |
| 1049 | } |
| 1050 | |
| 1051 | static struct nfs_fh * |
| 1052 | select_ds_fh_from_commit(struct pnfs_layout_segment *lseg, u32 i) |
| 1053 | { |
| 1054 | struct nfs4_filelayout_segment *flseg = FILELAYOUT_LSEG(lseg); |
| 1055 | |
| 1056 | if (flseg->stripe_type == STRIPE_SPARSE) { |
| 1057 | if (flseg->num_fh == 1) |
| 1058 | i = 0; |
| 1059 | else if (flseg->num_fh == 0) |
| 1060 | /* Use the MDS OPEN fh set in nfs_read_rpcsetup */ |
| 1061 | return NULL; |
| 1062 | } |
| 1063 | return flseg->fh_array[i]; |
| 1064 | } |
| 1065 | |
Fred Isaman | 0b7c015 | 2012-04-20 14:47:39 -0400 | [diff] [blame] | 1066 | static int filelayout_initiate_commit(struct nfs_commit_data *data, int how) |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 1067 | { |
| 1068 | struct pnfs_layout_segment *lseg = data->lseg; |
| 1069 | struct nfs4_pnfs_ds *ds; |
Andy Adamson | 0e20162 | 2013-09-06 14:14:00 -0400 | [diff] [blame] | 1070 | struct rpc_clnt *ds_clnt; |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 1071 | u32 idx; |
| 1072 | struct nfs_fh *fh; |
| 1073 | |
| 1074 | idx = calc_ds_index_from_commit(lseg, data->ds_commit_index); |
| 1075 | ds = nfs4_fl_prepare_ds(lseg, idx); |
Andy Adamson | 0e20162 | 2013-09-06 14:14:00 -0400 | [diff] [blame] | 1076 | if (!ds) |
| 1077 | goto out_err; |
| 1078 | |
| 1079 | ds_clnt = nfs4_find_or_create_ds_client(ds->ds_clp, data->inode); |
| 1080 | if (IS_ERR(ds_clnt)) |
| 1081 | goto out_err; |
| 1082 | |
Andy Adamson | 3a7936c | 2012-04-27 17:53:51 -0400 | [diff] [blame] | 1083 | dprintk("%s ino %lu, how %d cl_count %d\n", __func__, |
| 1084 | data->inode->i_ino, how, atomic_read(&ds->ds_clp->cl_count)); |
Fred Isaman | 0b7c015 | 2012-04-20 14:47:39 -0400 | [diff] [blame] | 1085 | data->commit_done_cb = filelayout_commit_done_cb; |
Andy Adamson | 3a7936c | 2012-04-27 17:53:51 -0400 | [diff] [blame] | 1086 | atomic_inc(&ds->ds_clp->cl_count); |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 1087 | data->ds_clp = ds->ds_clp; |
| 1088 | fh = select_ds_fh_from_commit(lseg, data->ds_commit_index); |
| 1089 | if (fh) |
| 1090 | data->args.fh = fh; |
Peng Tao | c36aae9 | 2014-06-09 07:10:14 +0800 | [diff] [blame] | 1091 | return nfs_initiate_commit(ds_clnt, data, NFS_PROTO(data->inode), |
Andy Adamson | 9f0ec176 | 2012-04-27 17:53:44 -0400 | [diff] [blame] | 1092 | &filelayout_commit_call_ops, how, |
| 1093 | RPC_TASK_SOFTCONN); |
Andy Adamson | 0e20162 | 2013-09-06 14:14:00 -0400 | [diff] [blame] | 1094 | out_err: |
Tom Haynes | f54bcf2 | 2014-12-11 15:34:59 -0500 | [diff] [blame] | 1095 | pnfs_generic_prepare_to_resend_writes(data); |
| 1096 | pnfs_generic_commit_release(data); |
Andy Adamson | 0e20162 | 2013-09-06 14:14:00 -0400 | [diff] [blame] | 1097 | return -EAGAIN; |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 1098 | } |
| 1099 | |
Weston Andros Adamson | 02d1426 | 2014-07-17 20:42:17 -0400 | [diff] [blame] | 1100 | /* filelayout_search_commit_reqs - Search lists in @cinfo for the head reqest |
| 1101 | * for @page |
| 1102 | * @cinfo - commit info for current inode |
| 1103 | * @page - page to search for matching head request |
| 1104 | * |
| 1105 | * Returns a the head request if one is found, otherwise returns NULL. |
| 1106 | */ |
| 1107 | static struct nfs_page * |
| 1108 | filelayout_search_commit_reqs(struct nfs_commit_info *cinfo, struct page *page) |
| 1109 | { |
| 1110 | struct nfs_page *freq, *t; |
| 1111 | struct pnfs_commit_bucket *b; |
| 1112 | int i; |
| 1113 | |
| 1114 | /* Linearly search the commit lists for each bucket until a matching |
| 1115 | * request is found */ |
| 1116 | for (i = 0, b = cinfo->ds->buckets; i < cinfo->ds->nbuckets; i++, b++) { |
| 1117 | list_for_each_entry_safe(freq, t, &b->written, wb_list) { |
| 1118 | if (freq->wb_page == page) |
| 1119 | return freq->wb_head; |
| 1120 | } |
| 1121 | list_for_each_entry_safe(freq, t, &b->committing, wb_list) { |
| 1122 | if (freq->wb_page == page) |
| 1123 | return freq->wb_head; |
| 1124 | } |
| 1125 | } |
| 1126 | |
| 1127 | return NULL; |
| 1128 | } |
| 1129 | |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 1130 | static int |
| 1131 | filelayout_commit_pagelist(struct inode *inode, struct list_head *mds_pages, |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 1132 | int how, struct nfs_commit_info *cinfo) |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 1133 | { |
Tom Haynes | f54bcf2 | 2014-12-11 15:34:59 -0500 | [diff] [blame] | 1134 | return pnfs_generic_commit_pagelist(inode, mds_pages, how, cinfo, |
| 1135 | filelayout_initiate_commit); |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 1136 | } |
Tom Haynes | f54bcf2 | 2014-12-11 15:34:59 -0500 | [diff] [blame] | 1137 | |
Christoph Hellwig | 661373b | 2014-09-02 21:27:57 -0700 | [diff] [blame] | 1138 | static struct nfs4_deviceid_node * |
| 1139 | filelayout_alloc_deviceid_node(struct nfs_server *server, |
| 1140 | struct pnfs_device *pdev, gfp_t gfp_flags) |
| 1141 | { |
| 1142 | struct nfs4_file_layout_dsaddr *dsaddr; |
| 1143 | |
| 1144 | dsaddr = nfs4_fl_alloc_deviceid_node(server, pdev, gfp_flags); |
| 1145 | if (!dsaddr) |
| 1146 | return NULL; |
| 1147 | return &dsaddr->id_node; |
| 1148 | } |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 1149 | |
Benny Halevy | 1775bc3 | 2011-05-20 13:47:33 +0200 | [diff] [blame] | 1150 | static void |
Trond Myklebust | fc87701 | 2015-03-09 17:25:14 -0400 | [diff] [blame] | 1151 | filelayout_free_deviceid_node(struct nfs4_deviceid_node *d) |
Benny Halevy | 1775bc3 | 2011-05-20 13:47:33 +0200 | [diff] [blame] | 1152 | { |
| 1153 | nfs4_fl_free_deviceid(container_of(d, struct nfs4_file_layout_dsaddr, id_node)); |
| 1154 | } |
| 1155 | |
Fred Isaman | 799ba8d | 2012-04-20 14:47:38 -0400 | [diff] [blame] | 1156 | static struct pnfs_layout_hdr * |
| 1157 | filelayout_alloc_layout_hdr(struct inode *inode, gfp_t gfp_flags) |
| 1158 | { |
| 1159 | struct nfs4_filelayout *flo; |
| 1160 | |
| 1161 | flo = kzalloc(sizeof(*flo), gfp_flags); |
Trond Myklebust | 6df200f | 2014-05-29 20:06:55 -0400 | [diff] [blame] | 1162 | return flo != NULL ? &flo->generic_hdr : NULL; |
Fred Isaman | 799ba8d | 2012-04-20 14:47:38 -0400 | [diff] [blame] | 1163 | } |
| 1164 | |
| 1165 | static void |
| 1166 | filelayout_free_layout_hdr(struct pnfs_layout_hdr *lo) |
| 1167 | { |
| 1168 | kfree(FILELAYOUT_FROM_HDR(lo)); |
| 1169 | } |
| 1170 | |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 1171 | static struct pnfs_ds_commit_info * |
| 1172 | filelayout_get_ds_info(struct inode *inode) |
| 1173 | { |
Fred Isaman | df01174 | 2012-04-24 14:50:34 -0400 | [diff] [blame] | 1174 | struct pnfs_layout_hdr *layout = NFS_I(inode)->layout; |
| 1175 | |
| 1176 | if (layout == NULL) |
| 1177 | return NULL; |
| 1178 | else |
| 1179 | return &FILELAYOUT_FROM_HDR(layout)->commit_info; |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 1180 | } |
| 1181 | |
Dean Hildebrand | 7ab672c | 2010-10-20 00:18:00 -0400 | [diff] [blame] | 1182 | static struct pnfs_layoutdriver_type filelayout_type = { |
Christoph Hellwig | ea8eecd | 2011-03-01 01:34:21 +0000 | [diff] [blame] | 1183 | .id = LAYOUT_NFSV4_1_FILES, |
| 1184 | .name = "LAYOUT_NFSV4_1_FILES", |
| 1185 | .owner = THIS_MODULE, |
Fred Isaman | 799ba8d | 2012-04-20 14:47:38 -0400 | [diff] [blame] | 1186 | .alloc_layout_hdr = filelayout_alloc_layout_hdr, |
| 1187 | .free_layout_hdr = filelayout_free_layout_hdr, |
Christoph Hellwig | ea8eecd | 2011-03-01 01:34:21 +0000 | [diff] [blame] | 1188 | .alloc_lseg = filelayout_alloc_lseg, |
| 1189 | .free_lseg = filelayout_free_lseg, |
Trond Myklebust | 1751c36 | 2011-06-10 13:30:23 -0400 | [diff] [blame] | 1190 | .pg_read_ops = &filelayout_pg_read_ops, |
| 1191 | .pg_write_ops = &filelayout_pg_write_ops, |
Fred Isaman | ea2cf22 | 2012-04-20 14:47:53 -0400 | [diff] [blame] | 1192 | .get_ds_info = &filelayout_get_ds_info, |
Trond Myklebust | 8dd3775 | 2012-03-15 17:16:40 -0400 | [diff] [blame] | 1193 | .mark_request_commit = filelayout_mark_request_commit, |
Tom Haynes | f54bcf2 | 2014-12-11 15:34:59 -0500 | [diff] [blame] | 1194 | .clear_request_commit = pnfs_generic_clear_request_commit, |
| 1195 | .scan_commit_lists = pnfs_generic_scan_commit_lists, |
| 1196 | .recover_commit_reqs = pnfs_generic_recover_commit_reqs, |
Weston Andros Adamson | 02d1426 | 2014-07-17 20:42:17 -0400 | [diff] [blame] | 1197 | .search_commit_reqs = filelayout_search_commit_reqs, |
Fred Isaman | e0c2b38 | 2011-03-23 13:27:53 +0000 | [diff] [blame] | 1198 | .commit_pagelist = filelayout_commit_pagelist, |
Andy Adamson | dc70d7b | 2011-03-01 01:34:19 +0000 | [diff] [blame] | 1199 | .read_pagelist = filelayout_read_pagelist, |
Andy Adamson | 0382b74 | 2011-03-03 15:13:45 +0000 | [diff] [blame] | 1200 | .write_pagelist = filelayout_write_pagelist, |
Christoph Hellwig | 661373b | 2014-09-02 21:27:57 -0700 | [diff] [blame] | 1201 | .alloc_deviceid_node = filelayout_alloc_deviceid_node, |
Trond Myklebust | fc87701 | 2015-03-09 17:25:14 -0400 | [diff] [blame] | 1202 | .free_deviceid_node = filelayout_free_deviceid_node, |
Trond Myklebust | 5bb89b4 | 2015-03-25 14:14:42 -0400 | [diff] [blame] | 1203 | .sync = pnfs_nfs_generic_sync, |
Dean Hildebrand | 7ab672c | 2010-10-20 00:18:00 -0400 | [diff] [blame] | 1204 | }; |
| 1205 | |
| 1206 | static int __init nfs4filelayout_init(void) |
| 1207 | { |
| 1208 | printk(KERN_INFO "%s: NFSv4 File Layout Driver Registering...\n", |
| 1209 | __func__); |
| 1210 | return pnfs_register_layoutdriver(&filelayout_type); |
| 1211 | } |
| 1212 | |
| 1213 | static void __exit nfs4filelayout_exit(void) |
| 1214 | { |
| 1215 | printk(KERN_INFO "%s: NFSv4 File Layout Driver Unregistering...\n", |
| 1216 | __func__); |
| 1217 | pnfs_unregister_layoutdriver(&filelayout_type); |
| 1218 | } |
| 1219 | |
J. Bruce Fields | f85ef69 | 2011-07-15 19:18:42 -0400 | [diff] [blame] | 1220 | MODULE_ALIAS("nfs-layouttype4-1"); |
| 1221 | |
Dean Hildebrand | 7ab672c | 2010-10-20 00:18:00 -0400 | [diff] [blame] | 1222 | module_init(nfs4filelayout_init); |
| 1223 | module_exit(nfs4filelayout_exit); |