11c6dcbe5SAnna Schumaker /* 21c6dcbe5SAnna Schumaker * Copyright (c) 2014 Anna Schumaker <Anna.Schumaker@Netapp.com> 31c6dcbe5SAnna Schumaker */ 41c6dcbe5SAnna Schumaker #include <linux/fs.h> 51c6dcbe5SAnna Schumaker #include <linux/sunrpc/sched.h> 61c6dcbe5SAnna Schumaker #include <linux/nfs.h> 71c6dcbe5SAnna Schumaker #include <linux/nfs3.h> 81c6dcbe5SAnna Schumaker #include <linux/nfs4.h> 91c6dcbe5SAnna Schumaker #include <linux/nfs_xdr.h> 101c6dcbe5SAnna Schumaker #include <linux/nfs_fs.h> 111c6dcbe5SAnna Schumaker #include "nfs4_fs.h" 121c6dcbe5SAnna Schumaker #include "nfs42.h" 131b4a4bd8SPeng Tao #include "iostat.h" 141b4a4bd8SPeng Tao #include "pnfs.h" 151b4a4bd8SPeng Tao #include "internal.h" 161b4a4bd8SPeng Tao 17291e1b94SAnna Schumaker #define NFSDBG_FACILITY NFSDBG_PROC 181c6dcbe5SAnna Schumaker 19f4ac1674SAnna Schumaker static int _nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep, 204bdf87ebSChristoph Hellwig struct nfs_lock_context *lock, loff_t offset, loff_t len) 21f4ac1674SAnna Schumaker { 22f4ac1674SAnna Schumaker struct inode *inode = file_inode(filep); 239a51940bSAnna Schumaker struct nfs_server *server = NFS_SERVER(inode); 24f4ac1674SAnna Schumaker struct nfs42_falloc_args args = { 25f4ac1674SAnna Schumaker .falloc_fh = NFS_FH(inode), 26f4ac1674SAnna Schumaker .falloc_offset = offset, 27f4ac1674SAnna Schumaker .falloc_length = len, 289a51940bSAnna Schumaker .falloc_bitmask = server->cache_consistency_bitmask, 29f4ac1674SAnna Schumaker }; 309a51940bSAnna Schumaker struct nfs42_falloc_res res = { 319a51940bSAnna Schumaker .falloc_server = server, 329a51940bSAnna Schumaker }; 33f4ac1674SAnna Schumaker int status; 34f4ac1674SAnna Schumaker 35f4ac1674SAnna Schumaker msg->rpc_argp = &args; 36f4ac1674SAnna Schumaker msg->rpc_resp = &res; 37f4ac1674SAnna Schumaker 384bdf87ebSChristoph Hellwig status = nfs4_set_rw_stateid(&args.falloc_stateid, lock->open_context, 394bdf87ebSChristoph Hellwig lock, FMODE_WRITE); 40f4ac1674SAnna Schumaker if (status) 41f4ac1674SAnna Schumaker return status; 42f4ac1674SAnna Schumaker 439a51940bSAnna Schumaker res.falloc_fattr = nfs_alloc_fattr(); 449a51940bSAnna Schumaker if (!res.falloc_fattr) 459a51940bSAnna Schumaker return -ENOMEM; 469a51940bSAnna Schumaker 479a51940bSAnna Schumaker status = nfs4_call_sync(server->client, server, msg, 48f4ac1674SAnna Schumaker &args.seq_args, &res.seq_res, 0); 499a51940bSAnna Schumaker if (status == 0) 509a51940bSAnna Schumaker status = nfs_post_op_update_inode(inode, res.falloc_fattr); 519a51940bSAnna Schumaker 529a51940bSAnna Schumaker kfree(res.falloc_fattr); 539a51940bSAnna Schumaker return status; 54f4ac1674SAnna Schumaker } 55f4ac1674SAnna Schumaker 56f4ac1674SAnna Schumaker static int nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep, 57f4ac1674SAnna Schumaker loff_t offset, loff_t len) 58f4ac1674SAnna Schumaker { 59f4ac1674SAnna Schumaker struct nfs_server *server = NFS_SERVER(file_inode(filep)); 60f4ac1674SAnna Schumaker struct nfs4_exception exception = { }; 614bdf87ebSChristoph Hellwig struct nfs_lock_context *lock; 62f4ac1674SAnna Schumaker int err; 63f4ac1674SAnna Schumaker 644bdf87ebSChristoph Hellwig lock = nfs_get_lock_context(nfs_file_open_context(filep)); 654bdf87ebSChristoph Hellwig if (IS_ERR(lock)) 664bdf87ebSChristoph Hellwig return PTR_ERR(lock); 674bdf87ebSChristoph Hellwig 684bdf87ebSChristoph Hellwig exception.inode = file_inode(filep); 694bdf87ebSChristoph Hellwig exception.state = lock->open_context->state; 704bdf87ebSChristoph Hellwig 71f4ac1674SAnna Schumaker do { 724bdf87ebSChristoph Hellwig err = _nfs42_proc_fallocate(msg, filep, lock, offset, len); 734bdf87ebSChristoph Hellwig if (err == -ENOTSUPP) { 744bdf87ebSChristoph Hellwig err = -EOPNOTSUPP; 754bdf87ebSChristoph Hellwig break; 764bdf87ebSChristoph Hellwig } 77f4ac1674SAnna Schumaker err = nfs4_handle_exception(server, err, &exception); 78f4ac1674SAnna Schumaker } while (exception.retry); 79f4ac1674SAnna Schumaker 804bdf87ebSChristoph Hellwig nfs_put_lock_context(lock); 81f4ac1674SAnna Schumaker return err; 82f4ac1674SAnna Schumaker } 83f4ac1674SAnna Schumaker 84f4ac1674SAnna Schumaker int nfs42_proc_allocate(struct file *filep, loff_t offset, loff_t len) 85f4ac1674SAnna Schumaker { 86f4ac1674SAnna Schumaker struct rpc_message msg = { 87f4ac1674SAnna Schumaker .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ALLOCATE], 88f4ac1674SAnna Schumaker }; 89f4ac1674SAnna Schumaker struct inode *inode = file_inode(filep); 90f4ac1674SAnna Schumaker int err; 91f4ac1674SAnna Schumaker 92f4ac1674SAnna Schumaker if (!nfs_server_capable(inode, NFS_CAP_ALLOCATE)) 93f4ac1674SAnna Schumaker return -EOPNOTSUPP; 94f4ac1674SAnna Schumaker 955955102cSAl Viro inode_lock(inode); 96f830f7ddSAnna Schumaker 97f4ac1674SAnna Schumaker err = nfs42_proc_fallocate(&msg, filep, offset, len); 98f4ac1674SAnna Schumaker if (err == -EOPNOTSUPP) 99f4ac1674SAnna Schumaker NFS_SERVER(inode)->caps &= ~NFS_CAP_ALLOCATE; 100f830f7ddSAnna Schumaker 1015955102cSAl Viro inode_unlock(inode); 102f4ac1674SAnna Schumaker return err; 103f4ac1674SAnna Schumaker } 104f4ac1674SAnna Schumaker 105624bd5b7SAnna Schumaker int nfs42_proc_deallocate(struct file *filep, loff_t offset, loff_t len) 106624bd5b7SAnna Schumaker { 107624bd5b7SAnna Schumaker struct rpc_message msg = { 108624bd5b7SAnna Schumaker .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DEALLOCATE], 109624bd5b7SAnna Schumaker }; 110624bd5b7SAnna Schumaker struct inode *inode = file_inode(filep); 111624bd5b7SAnna Schumaker int err; 112624bd5b7SAnna Schumaker 113624bd5b7SAnna Schumaker if (!nfs_server_capable(inode, NFS_CAP_DEALLOCATE)) 114624bd5b7SAnna Schumaker return -EOPNOTSUPP; 115624bd5b7SAnna Schumaker 1169a51940bSAnna Schumaker nfs_wb_all(inode); 1175955102cSAl Viro inode_lock(inode); 118f830f7ddSAnna Schumaker 119624bd5b7SAnna Schumaker err = nfs42_proc_fallocate(&msg, filep, offset, len); 1209a51940bSAnna Schumaker if (err == 0) 1219a51940bSAnna Schumaker truncate_pagecache_range(inode, offset, (offset + len) -1); 122624bd5b7SAnna Schumaker if (err == -EOPNOTSUPP) 123624bd5b7SAnna Schumaker NFS_SERVER(inode)->caps &= ~NFS_CAP_DEALLOCATE; 124f830f7ddSAnna Schumaker 1255955102cSAl Viro inode_unlock(inode); 126624bd5b7SAnna Schumaker return err; 127624bd5b7SAnna Schumaker } 128624bd5b7SAnna Schumaker 1292e72448bSAnna Schumaker static ssize_t _nfs42_proc_copy(struct file *src, loff_t pos_src, 1302e72448bSAnna Schumaker struct nfs_lock_context *src_lock, 1312e72448bSAnna Schumaker struct file *dst, loff_t pos_dst, 1322e72448bSAnna Schumaker struct nfs_lock_context *dst_lock, 1332e72448bSAnna Schumaker size_t count) 1342e72448bSAnna Schumaker { 1352e72448bSAnna Schumaker struct nfs42_copy_args args = { 1362e72448bSAnna Schumaker .src_fh = NFS_FH(file_inode(src)), 1372e72448bSAnna Schumaker .src_pos = pos_src, 1382e72448bSAnna Schumaker .dst_fh = NFS_FH(file_inode(dst)), 1392e72448bSAnna Schumaker .dst_pos = pos_dst, 1402e72448bSAnna Schumaker .count = count, 1412e72448bSAnna Schumaker }; 1422e72448bSAnna Schumaker struct nfs42_copy_res res; 1432e72448bSAnna Schumaker struct rpc_message msg = { 1442e72448bSAnna Schumaker .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COPY], 1452e72448bSAnna Schumaker .rpc_argp = &args, 1462e72448bSAnna Schumaker .rpc_resp = &res, 1472e72448bSAnna Schumaker }; 1482e72448bSAnna Schumaker struct inode *dst_inode = file_inode(dst); 1492e72448bSAnna Schumaker struct nfs_server *server = NFS_SERVER(dst_inode); 1502e72448bSAnna Schumaker int status; 1512e72448bSAnna Schumaker 1522e72448bSAnna Schumaker status = nfs4_set_rw_stateid(&args.src_stateid, src_lock->open_context, 1532e72448bSAnna Schumaker src_lock, FMODE_READ); 1542e72448bSAnna Schumaker if (status) 1552e72448bSAnna Schumaker return status; 1562e72448bSAnna Schumaker 1572e72448bSAnna Schumaker status = nfs4_set_rw_stateid(&args.dst_stateid, dst_lock->open_context, 1582e72448bSAnna Schumaker dst_lock, FMODE_WRITE); 1592e72448bSAnna Schumaker if (status) 1602e72448bSAnna Schumaker return status; 1612e72448bSAnna Schumaker 1622e72448bSAnna Schumaker status = nfs4_call_sync(server->client, server, &msg, 1632e72448bSAnna Schumaker &args.seq_args, &res.seq_res, 0); 1642e72448bSAnna Schumaker if (status == -ENOTSUPP) 1652e72448bSAnna Schumaker server->caps &= ~NFS_CAP_COPY; 1662e72448bSAnna Schumaker if (status) 1672e72448bSAnna Schumaker return status; 1682e72448bSAnna Schumaker 1692e72448bSAnna Schumaker if (res.write_res.verifier.committed != NFS_FILE_SYNC) { 1702e72448bSAnna Schumaker status = nfs_commit_file(dst, &res.write_res.verifier.verifier); 1712e72448bSAnna Schumaker if (status) 1722e72448bSAnna Schumaker return status; 1732e72448bSAnna Schumaker } 1742e72448bSAnna Schumaker 1752e72448bSAnna Schumaker truncate_pagecache_range(dst_inode, pos_dst, 1762e72448bSAnna Schumaker pos_dst + res.write_res.count); 1772e72448bSAnna Schumaker 1782e72448bSAnna Schumaker return res.write_res.count; 1792e72448bSAnna Schumaker } 1802e72448bSAnna Schumaker 1812e72448bSAnna Schumaker ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src, 1822e72448bSAnna Schumaker struct file *dst, loff_t pos_dst, 1832e72448bSAnna Schumaker size_t count) 1842e72448bSAnna Schumaker { 1852e72448bSAnna Schumaker struct nfs_server *server = NFS_SERVER(file_inode(dst)); 1862e72448bSAnna Schumaker struct nfs_lock_context *src_lock; 1872e72448bSAnna Schumaker struct nfs_lock_context *dst_lock; 1882e72448bSAnna Schumaker struct nfs4_exception src_exception = { }; 1892e72448bSAnna Schumaker struct nfs4_exception dst_exception = { }; 1902e72448bSAnna Schumaker ssize_t err, err2; 1912e72448bSAnna Schumaker 1922e72448bSAnna Schumaker if (!nfs_server_capable(file_inode(dst), NFS_CAP_COPY)) 1932e72448bSAnna Schumaker return -EOPNOTSUPP; 1942e72448bSAnna Schumaker 1952e72448bSAnna Schumaker src_lock = nfs_get_lock_context(nfs_file_open_context(src)); 1962e72448bSAnna Schumaker if (IS_ERR(src_lock)) 1972e72448bSAnna Schumaker return PTR_ERR(src_lock); 1982e72448bSAnna Schumaker 1992e72448bSAnna Schumaker src_exception.inode = file_inode(src); 2002e72448bSAnna Schumaker src_exception.state = src_lock->open_context->state; 2012e72448bSAnna Schumaker 2022e72448bSAnna Schumaker dst_lock = nfs_get_lock_context(nfs_file_open_context(dst)); 2032e72448bSAnna Schumaker if (IS_ERR(dst_lock)) { 2042e72448bSAnna Schumaker err = PTR_ERR(dst_lock); 2052e72448bSAnna Schumaker goto out_put_src_lock; 2062e72448bSAnna Schumaker } 2072e72448bSAnna Schumaker 2082e72448bSAnna Schumaker dst_exception.inode = file_inode(dst); 2092e72448bSAnna Schumaker dst_exception.state = dst_lock->open_context->state; 2102e72448bSAnna Schumaker 2112e72448bSAnna Schumaker do { 2122e72448bSAnna Schumaker mutex_lock(&file_inode(dst)->i_mutex); 2132e72448bSAnna Schumaker err = _nfs42_proc_copy(src, pos_src, src_lock, 2142e72448bSAnna Schumaker dst, pos_dst, dst_lock, count); 2152e72448bSAnna Schumaker mutex_unlock(&file_inode(dst)->i_mutex); 2162e72448bSAnna Schumaker 2172e72448bSAnna Schumaker if (err == -ENOTSUPP) { 2182e72448bSAnna Schumaker err = -EOPNOTSUPP; 2192e72448bSAnna Schumaker break; 2202e72448bSAnna Schumaker } 2212e72448bSAnna Schumaker 2222e72448bSAnna Schumaker err2 = nfs4_handle_exception(server, err, &src_exception); 2232e72448bSAnna Schumaker err = nfs4_handle_exception(server, err, &dst_exception); 2242e72448bSAnna Schumaker if (!err) 2252e72448bSAnna Schumaker err = err2; 2262e72448bSAnna Schumaker } while (src_exception.retry || dst_exception.retry); 2272e72448bSAnna Schumaker 2282e72448bSAnna Schumaker nfs_put_lock_context(dst_lock); 2292e72448bSAnna Schumaker out_put_src_lock: 2302e72448bSAnna Schumaker nfs_put_lock_context(src_lock); 2312e72448bSAnna Schumaker return err; 2322e72448bSAnna Schumaker } 2332e72448bSAnna Schumaker 2344bdf87ebSChristoph Hellwig static loff_t _nfs42_proc_llseek(struct file *filep, 2354bdf87ebSChristoph Hellwig struct nfs_lock_context *lock, loff_t offset, int whence) 2361c6dcbe5SAnna Schumaker { 2371c6dcbe5SAnna Schumaker struct inode *inode = file_inode(filep); 2381c6dcbe5SAnna Schumaker struct nfs42_seek_args args = { 2391c6dcbe5SAnna Schumaker .sa_fh = NFS_FH(inode), 2401c6dcbe5SAnna Schumaker .sa_offset = offset, 2411c6dcbe5SAnna Schumaker .sa_what = (whence == SEEK_HOLE) ? 2421c6dcbe5SAnna Schumaker NFS4_CONTENT_HOLE : NFS4_CONTENT_DATA, 2431c6dcbe5SAnna Schumaker }; 2441c6dcbe5SAnna Schumaker struct nfs42_seek_res res; 2451c6dcbe5SAnna Schumaker struct rpc_message msg = { 2461c6dcbe5SAnna Schumaker .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEEK], 2471c6dcbe5SAnna Schumaker .rpc_argp = &args, 2481c6dcbe5SAnna Schumaker .rpc_resp = &res, 2491c6dcbe5SAnna Schumaker }; 2501c6dcbe5SAnna Schumaker struct nfs_server *server = NFS_SERVER(inode); 2511c6dcbe5SAnna Schumaker int status; 2521c6dcbe5SAnna Schumaker 253878ffa9fSAnna Schumaker if (!nfs_server_capable(inode, NFS_CAP_SEEK)) 2541c6dcbe5SAnna Schumaker return -ENOTSUPP; 2551c6dcbe5SAnna Schumaker 2564bdf87ebSChristoph Hellwig status = nfs4_set_rw_stateid(&args.sa_stateid, lock->open_context, 2574bdf87ebSChristoph Hellwig lock, FMODE_READ); 2581c6dcbe5SAnna Schumaker if (status) 2591c6dcbe5SAnna Schumaker return status; 2601c6dcbe5SAnna Schumaker 2611c6dcbe5SAnna Schumaker nfs_wb_all(inode); 2621c6dcbe5SAnna Schumaker status = nfs4_call_sync(server->client, server, &msg, 2631c6dcbe5SAnna Schumaker &args.seq_args, &res.seq_res, 0); 2641c6dcbe5SAnna Schumaker if (status == -ENOTSUPP) 2651c6dcbe5SAnna Schumaker server->caps &= ~NFS_CAP_SEEK; 2661c6dcbe5SAnna Schumaker if (status) 2671c6dcbe5SAnna Schumaker return status; 2681c6dcbe5SAnna Schumaker 2691c6dcbe5SAnna Schumaker return vfs_setpos(filep, res.sr_offset, inode->i_sb->s_maxbytes); 2701c6dcbe5SAnna Schumaker } 271be3a5d23STrond Myklebust 272bdcc2cd1SJ. Bruce Fields loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence) 273bdcc2cd1SJ. Bruce Fields { 274bdcc2cd1SJ. Bruce Fields struct nfs_server *server = NFS_SERVER(file_inode(filep)); 275bdcc2cd1SJ. Bruce Fields struct nfs4_exception exception = { }; 2764bdf87ebSChristoph Hellwig struct nfs_lock_context *lock; 277306a5549SJ. Bruce Fields loff_t err; 278bdcc2cd1SJ. Bruce Fields 2794bdf87ebSChristoph Hellwig lock = nfs_get_lock_context(nfs_file_open_context(filep)); 2804bdf87ebSChristoph Hellwig if (IS_ERR(lock)) 2814bdf87ebSChristoph Hellwig return PTR_ERR(lock); 2824bdf87ebSChristoph Hellwig 2834bdf87ebSChristoph Hellwig exception.inode = file_inode(filep); 2844bdf87ebSChristoph Hellwig exception.state = lock->open_context->state; 2854bdf87ebSChristoph Hellwig 286bdcc2cd1SJ. Bruce Fields do { 2874bdf87ebSChristoph Hellwig err = _nfs42_proc_llseek(filep, lock, offset, whence); 288306a5549SJ. Bruce Fields if (err >= 0) 289306a5549SJ. Bruce Fields break; 2904bdf87ebSChristoph Hellwig if (err == -ENOTSUPP) { 2914bdf87ebSChristoph Hellwig err = -EOPNOTSUPP; 2924bdf87ebSChristoph Hellwig break; 2934bdf87ebSChristoph Hellwig } 294bdcc2cd1SJ. Bruce Fields err = nfs4_handle_exception(server, err, &exception); 295bdcc2cd1SJ. Bruce Fields } while (exception.retry); 296bdcc2cd1SJ. Bruce Fields 2974bdf87ebSChristoph Hellwig nfs_put_lock_context(lock); 298bdcc2cd1SJ. Bruce Fields return err; 299bdcc2cd1SJ. Bruce Fields } 300bdcc2cd1SJ. Bruce Fields 301bdcc2cd1SJ. Bruce Fields 3021b4a4bd8SPeng Tao static void 3031b4a4bd8SPeng Tao nfs42_layoutstat_prepare(struct rpc_task *task, void *calldata) 3041b4a4bd8SPeng Tao { 3051b4a4bd8SPeng Tao struct nfs42_layoutstat_data *data = calldata; 3061b4a4bd8SPeng Tao struct nfs_server *server = NFS_SERVER(data->args.inode); 3071b4a4bd8SPeng Tao 3081b4a4bd8SPeng Tao nfs41_setup_sequence(nfs4_get_session(server), &data->args.seq_args, 3091b4a4bd8SPeng Tao &data->res.seq_res, task); 3101b4a4bd8SPeng Tao } 3111b4a4bd8SPeng Tao 3121b4a4bd8SPeng Tao static void 3131b4a4bd8SPeng Tao nfs42_layoutstat_done(struct rpc_task *task, void *calldata) 3141b4a4bd8SPeng Tao { 3151b4a4bd8SPeng Tao struct nfs42_layoutstat_data *data = calldata; 31668d264cfSPeng Tao struct inode *inode = data->inode; 31768d264cfSPeng Tao struct pnfs_layout_hdr *lo; 3181b4a4bd8SPeng Tao 3191b4a4bd8SPeng Tao if (!nfs4_sequence_done(task, &data->res.seq_res)) 3201b4a4bd8SPeng Tao return; 3211b4a4bd8SPeng Tao 3226c5a0d89STrond Myklebust switch (task->tk_status) { 3236c5a0d89STrond Myklebust case 0: 3246c5a0d89STrond Myklebust break; 32568d264cfSPeng Tao case -NFS4ERR_EXPIRED: 32668d264cfSPeng Tao case -NFS4ERR_STALE_STATEID: 32768d264cfSPeng Tao case -NFS4ERR_OLD_STATEID: 32868d264cfSPeng Tao case -NFS4ERR_BAD_STATEID: 32968d264cfSPeng Tao spin_lock(&inode->i_lock); 33068d264cfSPeng Tao lo = NFS_I(inode)->layout; 33168d264cfSPeng Tao if (lo && nfs4_stateid_match(&data->args.stateid, 33268d264cfSPeng Tao &lo->plh_stateid)) { 33368d264cfSPeng Tao LIST_HEAD(head); 33468d264cfSPeng Tao 33568d264cfSPeng Tao /* 33668d264cfSPeng Tao * Mark the bad layout state as invalid, then retry 33768d264cfSPeng Tao * with the current stateid. 33868d264cfSPeng Tao */ 33968d264cfSPeng Tao set_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags); 34068d264cfSPeng Tao pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); 34168d264cfSPeng Tao spin_unlock(&inode->i_lock); 34268d264cfSPeng Tao pnfs_free_lseg_list(&head); 34368d264cfSPeng Tao } else 34468d264cfSPeng Tao spin_unlock(&inode->i_lock); 34568d264cfSPeng Tao break; 3466c5a0d89STrond Myklebust case -ENOTSUPP: 3476c5a0d89STrond Myklebust case -EOPNOTSUPP: 34868d264cfSPeng Tao NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTSTATS; 3496c5a0d89STrond Myklebust default: 35068d264cfSPeng Tao break; 3511b4a4bd8SPeng Tao } 35268d264cfSPeng Tao 35368d264cfSPeng Tao dprintk("%s server returns %d\n", __func__, task->tk_status); 3546c5a0d89STrond Myklebust } 3551b4a4bd8SPeng Tao 3561b4a4bd8SPeng Tao static void 3571b4a4bd8SPeng Tao nfs42_layoutstat_release(void *calldata) 3581b4a4bd8SPeng Tao { 3591b4a4bd8SPeng Tao struct nfs42_layoutstat_data *data = calldata; 3608733408dSPeng Tao struct nfs_server *nfss = NFS_SERVER(data->args.inode); 3618733408dSPeng Tao 3628733408dSPeng Tao if (nfss->pnfs_curr_ld->cleanup_layoutstats) 3638733408dSPeng Tao nfss->pnfs_curr_ld->cleanup_layoutstats(data); 3641b4a4bd8SPeng Tao 3651b4a4bd8SPeng Tao pnfs_put_layout_hdr(NFS_I(data->args.inode)->layout); 3661bfe3b25SPeng Tao smp_mb__before_atomic(); 3671bfe3b25SPeng Tao clear_bit(NFS_INO_LAYOUTSTATS, &NFS_I(data->args.inode)->flags); 3681bfe3b25SPeng Tao smp_mb__after_atomic(); 3691b4a4bd8SPeng Tao nfs_iput_and_deactive(data->inode); 3701b4a4bd8SPeng Tao kfree(data->args.devinfo); 3711b4a4bd8SPeng Tao kfree(data); 3721b4a4bd8SPeng Tao } 3731b4a4bd8SPeng Tao 374be3a5d23STrond Myklebust static const struct rpc_call_ops nfs42_layoutstat_ops = { 3751b4a4bd8SPeng Tao .rpc_call_prepare = nfs42_layoutstat_prepare, 3761b4a4bd8SPeng Tao .rpc_call_done = nfs42_layoutstat_done, 3771b4a4bd8SPeng Tao .rpc_release = nfs42_layoutstat_release, 378be3a5d23STrond Myklebust }; 379be3a5d23STrond Myklebust 380be3a5d23STrond Myklebust int nfs42_proc_layoutstats_generic(struct nfs_server *server, 381be3a5d23STrond Myklebust struct nfs42_layoutstat_data *data) 382be3a5d23STrond Myklebust { 383be3a5d23STrond Myklebust struct rpc_message msg = { 384be3a5d23STrond Myklebust .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTSTATS], 385be3a5d23STrond Myklebust .rpc_argp = &data->args, 386be3a5d23STrond Myklebust .rpc_resp = &data->res, 387be3a5d23STrond Myklebust }; 388be3a5d23STrond Myklebust struct rpc_task_setup task_setup = { 389be3a5d23STrond Myklebust .rpc_client = server->client, 390be3a5d23STrond Myklebust .rpc_message = &msg, 391be3a5d23STrond Myklebust .callback_ops = &nfs42_layoutstat_ops, 392be3a5d23STrond Myklebust .callback_data = data, 393be3a5d23STrond Myklebust .flags = RPC_TASK_ASYNC, 394be3a5d23STrond Myklebust }; 395be3a5d23STrond Myklebust struct rpc_task *task; 396be3a5d23STrond Myklebust 3971b4a4bd8SPeng Tao data->inode = nfs_igrab_and_active(data->args.inode); 3981b4a4bd8SPeng Tao if (!data->inode) { 3991b4a4bd8SPeng Tao nfs42_layoutstat_release(data); 4001b4a4bd8SPeng Tao return -EAGAIN; 4011b4a4bd8SPeng Tao } 402be3a5d23STrond Myklebust nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); 403be3a5d23STrond Myklebust task = rpc_run_task(&task_setup); 404be3a5d23STrond Myklebust if (IS_ERR(task)) 405be3a5d23STrond Myklebust return PTR_ERR(task); 406be3a5d23STrond Myklebust return 0; 407be3a5d23STrond Myklebust } 408e5341f3aSPeng Tao 409e5341f3aSPeng Tao static int _nfs42_proc_clone(struct rpc_message *msg, struct file *src_f, 4104bdf87ebSChristoph Hellwig struct file *dst_f, struct nfs_lock_context *src_lock, 4114bdf87ebSChristoph Hellwig struct nfs_lock_context *dst_lock, loff_t src_offset, 412e5341f3aSPeng Tao loff_t dst_offset, loff_t count) 413e5341f3aSPeng Tao { 414e5341f3aSPeng Tao struct inode *src_inode = file_inode(src_f); 415e5341f3aSPeng Tao struct inode *dst_inode = file_inode(dst_f); 416e5341f3aSPeng Tao struct nfs_server *server = NFS_SERVER(dst_inode); 417e5341f3aSPeng Tao struct nfs42_clone_args args = { 418e5341f3aSPeng Tao .src_fh = NFS_FH(src_inode), 419e5341f3aSPeng Tao .dst_fh = NFS_FH(dst_inode), 420e5341f3aSPeng Tao .src_offset = src_offset, 421e5341f3aSPeng Tao .dst_offset = dst_offset, 4229494b2ceSChristoph Hellwig .count = count, 423e5341f3aSPeng Tao .dst_bitmask = server->cache_consistency_bitmask, 424e5341f3aSPeng Tao }; 425e5341f3aSPeng Tao struct nfs42_clone_res res = { 426e5341f3aSPeng Tao .server = server, 427e5341f3aSPeng Tao }; 428e5341f3aSPeng Tao int status; 429e5341f3aSPeng Tao 430e5341f3aSPeng Tao msg->rpc_argp = &args; 431e5341f3aSPeng Tao msg->rpc_resp = &res; 432e5341f3aSPeng Tao 4334bdf87ebSChristoph Hellwig status = nfs4_set_rw_stateid(&args.src_stateid, src_lock->open_context, 4344bdf87ebSChristoph Hellwig src_lock, FMODE_READ); 435e5341f3aSPeng Tao if (status) 436e5341f3aSPeng Tao return status; 437e5341f3aSPeng Tao 4384bdf87ebSChristoph Hellwig status = nfs4_set_rw_stateid(&args.dst_stateid, dst_lock->open_context, 4394bdf87ebSChristoph Hellwig dst_lock, FMODE_WRITE); 440e5341f3aSPeng Tao if (status) 441e5341f3aSPeng Tao return status; 442e5341f3aSPeng Tao 443e5341f3aSPeng Tao res.dst_fattr = nfs_alloc_fattr(); 444e5341f3aSPeng Tao if (!res.dst_fattr) 445e5341f3aSPeng Tao return -ENOMEM; 446e5341f3aSPeng Tao 447e5341f3aSPeng Tao status = nfs4_call_sync(server->client, server, msg, 448e5341f3aSPeng Tao &args.seq_args, &res.seq_res, 0); 449e5341f3aSPeng Tao if (status == 0) 450e5341f3aSPeng Tao status = nfs_post_op_update_inode(dst_inode, res.dst_fattr); 451e5341f3aSPeng Tao 452e5341f3aSPeng Tao kfree(res.dst_fattr); 453e5341f3aSPeng Tao return status; 454e5341f3aSPeng Tao } 455e5341f3aSPeng Tao 456e5341f3aSPeng Tao int nfs42_proc_clone(struct file *src_f, struct file *dst_f, 457e5341f3aSPeng Tao loff_t src_offset, loff_t dst_offset, loff_t count) 458e5341f3aSPeng Tao { 459e5341f3aSPeng Tao struct rpc_message msg = { 460e5341f3aSPeng Tao .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLONE], 461e5341f3aSPeng Tao }; 462e5341f3aSPeng Tao struct inode *inode = file_inode(src_f); 463e5341f3aSPeng Tao struct nfs_server *server = NFS_SERVER(file_inode(src_f)); 4644bdf87ebSChristoph Hellwig struct nfs_lock_context *src_lock; 4654bdf87ebSChristoph Hellwig struct nfs_lock_context *dst_lock; 4664bdf87ebSChristoph Hellwig struct nfs4_exception src_exception = { }; 4674bdf87ebSChristoph Hellwig struct nfs4_exception dst_exception = { }; 4684bdf87ebSChristoph Hellwig int err, err2; 469e5341f3aSPeng Tao 470e5341f3aSPeng Tao if (!nfs_server_capable(inode, NFS_CAP_CLONE)) 471e5341f3aSPeng Tao return -EOPNOTSUPP; 472e5341f3aSPeng Tao 4734bdf87ebSChristoph Hellwig src_lock = nfs_get_lock_context(nfs_file_open_context(src_f)); 4744bdf87ebSChristoph Hellwig if (IS_ERR(src_lock)) 4754bdf87ebSChristoph Hellwig return PTR_ERR(src_lock); 4764bdf87ebSChristoph Hellwig 4774bdf87ebSChristoph Hellwig src_exception.inode = file_inode(src_f); 4784bdf87ebSChristoph Hellwig src_exception.state = src_lock->open_context->state; 4794bdf87ebSChristoph Hellwig 4804bdf87ebSChristoph Hellwig dst_lock = nfs_get_lock_context(nfs_file_open_context(dst_f)); 4814bdf87ebSChristoph Hellwig if (IS_ERR(dst_lock)) { 4824bdf87ebSChristoph Hellwig err = PTR_ERR(dst_lock); 4834bdf87ebSChristoph Hellwig goto out_put_src_lock; 4844bdf87ebSChristoph Hellwig } 4854bdf87ebSChristoph Hellwig 4864bdf87ebSChristoph Hellwig dst_exception.inode = file_inode(dst_f); 4874bdf87ebSChristoph Hellwig dst_exception.state = dst_lock->open_context->state; 4884bdf87ebSChristoph Hellwig 489e5341f3aSPeng Tao do { 4904bdf87ebSChristoph Hellwig err = _nfs42_proc_clone(&msg, src_f, dst_f, src_lock, dst_lock, 4914bdf87ebSChristoph Hellwig src_offset, dst_offset, count); 492e5341f3aSPeng Tao if (err == -ENOTSUPP || err == -EOPNOTSUPP) { 493e5341f3aSPeng Tao NFS_SERVER(inode)->caps &= ~NFS_CAP_CLONE; 4944bdf87ebSChristoph Hellwig err = -EOPNOTSUPP; 4954bdf87ebSChristoph Hellwig break; 496e5341f3aSPeng Tao } 497e5341f3aSPeng Tao 4984bdf87ebSChristoph Hellwig err2 = nfs4_handle_exception(server, err, &src_exception); 4994bdf87ebSChristoph Hellwig err = nfs4_handle_exception(server, err, &dst_exception); 5004bdf87ebSChristoph Hellwig if (!err) 5014bdf87ebSChristoph Hellwig err = err2; 5024bdf87ebSChristoph Hellwig } while (src_exception.retry || dst_exception.retry); 5034bdf87ebSChristoph Hellwig 5044bdf87ebSChristoph Hellwig nfs_put_lock_context(dst_lock); 5054bdf87ebSChristoph Hellwig out_put_src_lock: 5064bdf87ebSChristoph Hellwig nfs_put_lock_context(src_lock); 507e5341f3aSPeng Tao return err; 508e5341f3aSPeng Tao } 509