1b2441318SGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0 21c6dcbe5SAnna Schumaker /* 31c6dcbe5SAnna Schumaker * Copyright (c) 2014 Anna Schumaker <Anna.Schumaker@Netapp.com> 41c6dcbe5SAnna Schumaker */ 51c6dcbe5SAnna Schumaker #include <linux/fs.h> 60491567bSOlga Kornievskaia #include <linux/sunrpc/addr.h> 71c6dcbe5SAnna Schumaker #include <linux/sunrpc/sched.h> 81c6dcbe5SAnna Schumaker #include <linux/nfs.h> 91c6dcbe5SAnna Schumaker #include <linux/nfs3.h> 101c6dcbe5SAnna Schumaker #include <linux/nfs4.h> 111c6dcbe5SAnna Schumaker #include <linux/nfs_xdr.h> 121c6dcbe5SAnna Schumaker #include <linux/nfs_fs.h> 131c6dcbe5SAnna Schumaker #include "nfs4_fs.h" 141c6dcbe5SAnna Schumaker #include "nfs42.h" 151b4a4bd8SPeng Tao #include "iostat.h" 161b4a4bd8SPeng Tao #include "pnfs.h" 17efc6f4aaSAnna Schumaker #include "nfs4session.h" 181b4a4bd8SPeng Tao #include "internal.h" 190491567bSOlga Kornievskaia #include "delegation.h" 201b4a4bd8SPeng Tao 21291e1b94SAnna Schumaker #define NFSDBG_FACILITY NFSDBG_PROC 22c975c209SOlga Kornievskaia static int nfs42_do_offload_cancel_async(struct file *dst, nfs4_stateid *std); 231c6dcbe5SAnna Schumaker 240491567bSOlga Kornievskaia static void nfs42_set_netaddr(struct file *filep, struct nfs42_netaddr *naddr) 250491567bSOlga Kornievskaia { 260491567bSOlga Kornievskaia struct nfs_client *clp = (NFS_SERVER(file_inode(filep)))->nfs_client; 270491567bSOlga Kornievskaia unsigned short port = 2049; 280491567bSOlga Kornievskaia 290491567bSOlga Kornievskaia rcu_read_lock(); 300491567bSOlga Kornievskaia naddr->netid_len = scnprintf(naddr->netid, 310491567bSOlga Kornievskaia sizeof(naddr->netid), "%s", 320491567bSOlga Kornievskaia rpc_peeraddr2str(clp->cl_rpcclient, 330491567bSOlga Kornievskaia RPC_DISPLAY_NETID)); 340491567bSOlga Kornievskaia naddr->addr_len = scnprintf(naddr->addr, 350491567bSOlga Kornievskaia sizeof(naddr->addr), 360491567bSOlga Kornievskaia "%s.%u.%u", 370491567bSOlga Kornievskaia rpc_peeraddr2str(clp->cl_rpcclient, 380491567bSOlga Kornievskaia RPC_DISPLAY_ADDR), 390491567bSOlga Kornievskaia port >> 8, port & 255); 400491567bSOlga Kornievskaia rcu_read_unlock(); 410491567bSOlga Kornievskaia } 420491567bSOlga Kornievskaia 43f4ac1674SAnna Schumaker static int _nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep, 444bdf87ebSChristoph Hellwig struct nfs_lock_context *lock, loff_t offset, loff_t len) 45f4ac1674SAnna Schumaker { 46f4ac1674SAnna Schumaker struct inode *inode = file_inode(filep); 479a51940bSAnna Schumaker struct nfs_server *server = NFS_SERVER(inode); 48f4ac1674SAnna Schumaker struct nfs42_falloc_args args = { 49f4ac1674SAnna Schumaker .falloc_fh = NFS_FH(inode), 50f4ac1674SAnna Schumaker .falloc_offset = offset, 51f4ac1674SAnna Schumaker .falloc_length = len, 52913eca1aSAnna Schumaker .falloc_bitmask = nfs4_fattr_bitmap, 53f4ac1674SAnna Schumaker }; 549a51940bSAnna Schumaker struct nfs42_falloc_res res = { 559a51940bSAnna Schumaker .falloc_server = server, 569a51940bSAnna Schumaker }; 57f4ac1674SAnna Schumaker int status; 58f4ac1674SAnna Schumaker 59f4ac1674SAnna Schumaker msg->rpc_argp = &args; 60f4ac1674SAnna Schumaker msg->rpc_resp = &res; 61f4ac1674SAnna Schumaker 624bdf87ebSChristoph Hellwig status = nfs4_set_rw_stateid(&args.falloc_stateid, lock->open_context, 634bdf87ebSChristoph Hellwig lock, FMODE_WRITE); 64d826e5b8SOlga Kornievskaia if (status) { 65d826e5b8SOlga Kornievskaia if (status == -EAGAIN) 66d826e5b8SOlga Kornievskaia status = -NFS4ERR_BAD_STATEID; 67f4ac1674SAnna Schumaker return status; 68d826e5b8SOlga Kornievskaia } 69f4ac1674SAnna Schumaker 709a51940bSAnna Schumaker res.falloc_fattr = nfs_alloc_fattr(); 719a51940bSAnna Schumaker if (!res.falloc_fattr) 729a51940bSAnna Schumaker return -ENOMEM; 739a51940bSAnna Schumaker 749a51940bSAnna Schumaker status = nfs4_call_sync(server->client, server, msg, 75f4ac1674SAnna Schumaker &args.seq_args, &res.seq_res, 0); 769a51940bSAnna Schumaker if (status == 0) 779a51940bSAnna Schumaker status = nfs_post_op_update_inode(inode, res.falloc_fattr); 789a51940bSAnna Schumaker 799a51940bSAnna Schumaker kfree(res.falloc_fattr); 809a51940bSAnna Schumaker return status; 81f4ac1674SAnna Schumaker } 82f4ac1674SAnna Schumaker 83f4ac1674SAnna Schumaker static int nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep, 84f4ac1674SAnna Schumaker loff_t offset, loff_t len) 85f4ac1674SAnna Schumaker { 86f4ac1674SAnna Schumaker struct nfs_server *server = NFS_SERVER(file_inode(filep)); 87f4ac1674SAnna Schumaker struct nfs4_exception exception = { }; 884bdf87ebSChristoph Hellwig struct nfs_lock_context *lock; 89f4ac1674SAnna Schumaker int err; 90f4ac1674SAnna Schumaker 914bdf87ebSChristoph Hellwig lock = nfs_get_lock_context(nfs_file_open_context(filep)); 924bdf87ebSChristoph Hellwig if (IS_ERR(lock)) 934bdf87ebSChristoph Hellwig return PTR_ERR(lock); 944bdf87ebSChristoph Hellwig 954bdf87ebSChristoph Hellwig exception.inode = file_inode(filep); 964bdf87ebSChristoph Hellwig exception.state = lock->open_context->state; 974bdf87ebSChristoph Hellwig 98f4ac1674SAnna Schumaker do { 994bdf87ebSChristoph Hellwig err = _nfs42_proc_fallocate(msg, filep, lock, offset, len); 1004bdf87ebSChristoph Hellwig if (err == -ENOTSUPP) { 1014bdf87ebSChristoph Hellwig err = -EOPNOTSUPP; 1024bdf87ebSChristoph Hellwig break; 1034bdf87ebSChristoph Hellwig } 104f4ac1674SAnna Schumaker err = nfs4_handle_exception(server, err, &exception); 105f4ac1674SAnna Schumaker } while (exception.retry); 106f4ac1674SAnna Schumaker 1074bdf87ebSChristoph Hellwig nfs_put_lock_context(lock); 108f4ac1674SAnna Schumaker return err; 109f4ac1674SAnna Schumaker } 110f4ac1674SAnna Schumaker 111f4ac1674SAnna Schumaker int nfs42_proc_allocate(struct file *filep, loff_t offset, loff_t len) 112f4ac1674SAnna Schumaker { 113f4ac1674SAnna Schumaker struct rpc_message msg = { 114f4ac1674SAnna Schumaker .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_ALLOCATE], 115f4ac1674SAnna Schumaker }; 116f4ac1674SAnna Schumaker struct inode *inode = file_inode(filep); 117f4ac1674SAnna Schumaker int err; 118f4ac1674SAnna Schumaker 119f4ac1674SAnna Schumaker if (!nfs_server_capable(inode, NFS_CAP_ALLOCATE)) 120f4ac1674SAnna Schumaker return -EOPNOTSUPP; 121f4ac1674SAnna Schumaker 1225955102cSAl Viro inode_lock(inode); 123f830f7ddSAnna Schumaker 124f4ac1674SAnna Schumaker err = nfs42_proc_fallocate(&msg, filep, offset, len); 125f4ac1674SAnna Schumaker if (err == -EOPNOTSUPP) 126f4ac1674SAnna Schumaker NFS_SERVER(inode)->caps &= ~NFS_CAP_ALLOCATE; 127f830f7ddSAnna Schumaker 1285955102cSAl Viro inode_unlock(inode); 129f4ac1674SAnna Schumaker return err; 130f4ac1674SAnna Schumaker } 131f4ac1674SAnna Schumaker 132624bd5b7SAnna Schumaker int nfs42_proc_deallocate(struct file *filep, loff_t offset, loff_t len) 133624bd5b7SAnna Schumaker { 134624bd5b7SAnna Schumaker struct rpc_message msg = { 135624bd5b7SAnna Schumaker .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DEALLOCATE], 136624bd5b7SAnna Schumaker }; 137624bd5b7SAnna Schumaker struct inode *inode = file_inode(filep); 138624bd5b7SAnna Schumaker int err; 139624bd5b7SAnna Schumaker 140624bd5b7SAnna Schumaker if (!nfs_server_capable(inode, NFS_CAP_DEALLOCATE)) 141624bd5b7SAnna Schumaker return -EOPNOTSUPP; 142624bd5b7SAnna Schumaker 1435955102cSAl Viro inode_lock(inode); 1441e564d3dSTrond Myklebust err = nfs_sync_inode(inode); 1451e564d3dSTrond Myklebust if (err) 1461e564d3dSTrond Myklebust goto out_unlock; 147f830f7ddSAnna Schumaker 148624bd5b7SAnna Schumaker err = nfs42_proc_fallocate(&msg, filep, offset, len); 1499a51940bSAnna Schumaker if (err == 0) 1509a51940bSAnna Schumaker truncate_pagecache_range(inode, offset, (offset + len) -1); 151624bd5b7SAnna Schumaker if (err == -EOPNOTSUPP) 152624bd5b7SAnna Schumaker NFS_SERVER(inode)->caps &= ~NFS_CAP_DEALLOCATE; 1531e564d3dSTrond Myklebust out_unlock: 1545955102cSAl Viro inode_unlock(inode); 155624bd5b7SAnna Schumaker return err; 156624bd5b7SAnna Schumaker } 157624bd5b7SAnna Schumaker 15862164f31SOlga Kornievskaia static int handle_async_copy(struct nfs42_copy_res *res, 1590e65a32cSOlga Kornievskaia struct nfs_server *dst_server, 1600e65a32cSOlga Kornievskaia struct nfs_server *src_server, 16162164f31SOlga Kornievskaia struct file *src, 16262164f31SOlga Kornievskaia struct file *dst, 1630e65a32cSOlga Kornievskaia nfs4_stateid *src_stateid, 1640e65a32cSOlga Kornievskaia bool *restart) 16562164f31SOlga Kornievskaia { 16699f2c555SOlga Kornievskaia struct nfs4_copy_state *copy, *tmp_copy; 16762164f31SOlga Kornievskaia int status = NFS4_OK; 168bc0c9079SOlga Kornievskaia bool found_pending = false; 1690e65a32cSOlga Kornievskaia struct nfs_open_context *dst_ctx = nfs_file_open_context(dst); 1700e65a32cSOlga Kornievskaia struct nfs_open_context *src_ctx = nfs_file_open_context(src); 171bc0c9079SOlga Kornievskaia 17299f2c555SOlga Kornievskaia copy = kzalloc(sizeof(struct nfs4_copy_state), GFP_NOFS); 17399f2c555SOlga Kornievskaia if (!copy) 17499f2c555SOlga Kornievskaia return -ENOMEM; 17599f2c555SOlga Kornievskaia 1760e65a32cSOlga Kornievskaia spin_lock(&dst_server->nfs_client->cl_lock); 1770e65a32cSOlga Kornievskaia list_for_each_entry(tmp_copy, 1780e65a32cSOlga Kornievskaia &dst_server->nfs_client->pending_cb_stateids, 179bc0c9079SOlga Kornievskaia copies) { 18099f2c555SOlga Kornievskaia if (memcmp(&res->write_res.stateid, &tmp_copy->stateid, 181bc0c9079SOlga Kornievskaia NFS4_STATEID_SIZE)) 182bc0c9079SOlga Kornievskaia continue; 183bc0c9079SOlga Kornievskaia found_pending = true; 18499f2c555SOlga Kornievskaia list_del(&tmp_copy->copies); 185bc0c9079SOlga Kornievskaia break; 186bc0c9079SOlga Kornievskaia } 187bc0c9079SOlga Kornievskaia if (found_pending) { 1880e65a32cSOlga Kornievskaia spin_unlock(&dst_server->nfs_client->cl_lock); 18999f2c555SOlga Kornievskaia kfree(copy); 19099f2c555SOlga Kornievskaia copy = tmp_copy; 191bc0c9079SOlga Kornievskaia goto out; 192bc0c9079SOlga Kornievskaia } 19362164f31SOlga Kornievskaia 19462164f31SOlga Kornievskaia memcpy(©->stateid, &res->write_res.stateid, NFS4_STATEID_SIZE); 19562164f31SOlga Kornievskaia init_completion(©->completion); 1960e65a32cSOlga Kornievskaia copy->parent_dst_state = dst_ctx->state; 1970e65a32cSOlga Kornievskaia copy->parent_src_state = src_ctx->state; 19862164f31SOlga Kornievskaia 1990e65a32cSOlga Kornievskaia list_add_tail(©->copies, &dst_server->ss_copies); 2000e65a32cSOlga Kornievskaia spin_unlock(&dst_server->nfs_client->cl_lock); 2010e65a32cSOlga Kornievskaia 2020e65a32cSOlga Kornievskaia if (dst_server != src_server) { 2030e65a32cSOlga Kornievskaia spin_lock(&src_server->nfs_client->cl_lock); 2040e65a32cSOlga Kornievskaia list_add_tail(©->src_copies, &src_server->ss_copies); 2050e65a32cSOlga Kornievskaia spin_unlock(&src_server->nfs_client->cl_lock); 2060e65a32cSOlga Kornievskaia } 20762164f31SOlga Kornievskaia 208c975c209SOlga Kornievskaia status = wait_for_completion_interruptible(©->completion); 2090e65a32cSOlga Kornievskaia spin_lock(&dst_server->nfs_client->cl_lock); 21062164f31SOlga Kornievskaia list_del_init(©->copies); 2110e65a32cSOlga Kornievskaia spin_unlock(&dst_server->nfs_client->cl_lock); 2120e65a32cSOlga Kornievskaia if (dst_server != src_server) { 2130e65a32cSOlga Kornievskaia spin_lock(&src_server->nfs_client->cl_lock); 2140e65a32cSOlga Kornievskaia list_del_init(©->src_copies); 2150e65a32cSOlga Kornievskaia spin_unlock(&src_server->nfs_client->cl_lock); 2160e65a32cSOlga Kornievskaia } 217c975c209SOlga Kornievskaia if (status == -ERESTARTSYS) { 218e4648aa4SOlga Kornievskaia goto out_cancel; 2190e65a32cSOlga Kornievskaia } else if (copy->flags || copy->error == NFS4ERR_PARTNER_NO_AUTH) { 220e4648aa4SOlga Kornievskaia status = -EAGAIN; 2210e65a32cSOlga Kornievskaia *restart = true; 222e4648aa4SOlga Kornievskaia goto out_cancel; 223c975c209SOlga Kornievskaia } 224bc0c9079SOlga Kornievskaia out: 22562164f31SOlga Kornievskaia res->write_res.count = copy->count; 22662164f31SOlga Kornievskaia memcpy(&res->write_res.verifier, ©->verf, sizeof(copy->verf)); 22762164f31SOlga Kornievskaia status = -copy->error; 22862164f31SOlga Kornievskaia 22912406025SOlga Kornievskaia out_free: 23062164f31SOlga Kornievskaia kfree(copy); 23162164f31SOlga Kornievskaia return status; 232e4648aa4SOlga Kornievskaia out_cancel: 233e4648aa4SOlga Kornievskaia nfs42_do_offload_cancel_async(dst, ©->stateid); 23412406025SOlga Kornievskaia if (!nfs42_files_from_same_server(src, dst)) 23512406025SOlga Kornievskaia nfs42_do_offload_cancel_async(src, src_stateid); 23612406025SOlga Kornievskaia goto out_free; 23762164f31SOlga Kornievskaia } 23862164f31SOlga Kornievskaia 2396b8d84e2SOlga Kornievskaia static int process_copy_commit(struct file *dst, loff_t pos_dst, 2406b8d84e2SOlga Kornievskaia struct nfs42_copy_res *res) 2416b8d84e2SOlga Kornievskaia { 2426b8d84e2SOlga Kornievskaia struct nfs_commitres cres; 2436b8d84e2SOlga Kornievskaia int status = -ENOMEM; 2446b8d84e2SOlga Kornievskaia 2456b8d84e2SOlga Kornievskaia cres.verf = kzalloc(sizeof(struct nfs_writeverf), GFP_NOFS); 2466b8d84e2SOlga Kornievskaia if (!cres.verf) 2476b8d84e2SOlga Kornievskaia goto out; 2486b8d84e2SOlga Kornievskaia 2496b8d84e2SOlga Kornievskaia status = nfs4_proc_commit(dst, pos_dst, res->write_res.count, &cres); 2506b8d84e2SOlga Kornievskaia if (status) 2516b8d84e2SOlga Kornievskaia goto out_free; 2526b8d84e2SOlga Kornievskaia if (nfs_write_verifier_cmp(&res->write_res.verifier.verifier, 2536b8d84e2SOlga Kornievskaia &cres.verf->verifier)) { 2546b8d84e2SOlga Kornievskaia dprintk("commit verf differs from copy verf\n"); 2556b8d84e2SOlga Kornievskaia status = -EAGAIN; 2566b8d84e2SOlga Kornievskaia } 2576b8d84e2SOlga Kornievskaia out_free: 2586b8d84e2SOlga Kornievskaia kfree(cres.verf); 2596b8d84e2SOlga Kornievskaia out: 2606b8d84e2SOlga Kornievskaia return status; 2616b8d84e2SOlga Kornievskaia } 2626b8d84e2SOlga Kornievskaia 2639d8cacbfSTrond Myklebust static ssize_t _nfs42_proc_copy(struct file *src, 2642e72448bSAnna Schumaker struct nfs_lock_context *src_lock, 2659d8cacbfSTrond Myklebust struct file *dst, 2662e72448bSAnna Schumaker struct nfs_lock_context *dst_lock, 2679d8cacbfSTrond Myklebust struct nfs42_copy_args *args, 2681d38f3f0SOlga Kornievskaia struct nfs42_copy_res *res, 2691d38f3f0SOlga Kornievskaia struct nl4_server *nss, 2700e65a32cSOlga Kornievskaia nfs4_stateid *cnr_stateid, 2710e65a32cSOlga Kornievskaia bool *restart) 2722e72448bSAnna Schumaker { 2732e72448bSAnna Schumaker struct rpc_message msg = { 2742e72448bSAnna Schumaker .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COPY], 2759d8cacbfSTrond Myklebust .rpc_argp = args, 2769d8cacbfSTrond Myklebust .rpc_resp = res, 2772e72448bSAnna Schumaker }; 2782e72448bSAnna Schumaker struct inode *dst_inode = file_inode(dst); 2790e65a32cSOlga Kornievskaia struct inode *src_inode = file_inode(src); 2800e65a32cSOlga Kornievskaia struct nfs_server *dst_server = NFS_SERVER(dst_inode); 2810e65a32cSOlga Kornievskaia struct nfs_server *src_server = NFS_SERVER(src_inode); 2829d8cacbfSTrond Myklebust loff_t pos_src = args->src_pos; 2839d8cacbfSTrond Myklebust loff_t pos_dst = args->dst_pos; 2849d8cacbfSTrond Myklebust size_t count = args->count; 2851ee48bddSOlga Kornievskaia ssize_t status; 2862e72448bSAnna Schumaker 2871d38f3f0SOlga Kornievskaia if (nss) { 2881d38f3f0SOlga Kornievskaia args->cp_src = nss; 2891d38f3f0SOlga Kornievskaia nfs4_stateid_copy(&args->src_stateid, cnr_stateid); 2901d38f3f0SOlga Kornievskaia } else { 2911d38f3f0SOlga Kornievskaia status = nfs4_set_rw_stateid(&args->src_stateid, 2921d38f3f0SOlga Kornievskaia src_lock->open_context, src_lock, FMODE_READ); 293d826e5b8SOlga Kornievskaia if (status) { 294d826e5b8SOlga Kornievskaia if (status == -EAGAIN) 295d826e5b8SOlga Kornievskaia status = -NFS4ERR_BAD_STATEID; 2962e72448bSAnna Schumaker return status; 2971d38f3f0SOlga Kornievskaia } 298d826e5b8SOlga Kornievskaia } 299837bb1d7STrond Myklebust status = nfs_filemap_write_and_wait_range(file_inode(src)->i_mapping, 300837bb1d7STrond Myklebust pos_src, pos_src + (loff_t)count - 1); 301837bb1d7STrond Myklebust if (status) 302837bb1d7STrond Myklebust return status; 303837bb1d7STrond Myklebust 3049d8cacbfSTrond Myklebust status = nfs4_set_rw_stateid(&args->dst_stateid, dst_lock->open_context, 3052e72448bSAnna Schumaker dst_lock, FMODE_WRITE); 306d826e5b8SOlga Kornievskaia if (status) { 307d826e5b8SOlga Kornievskaia if (status == -EAGAIN) 308d826e5b8SOlga Kornievskaia status = -NFS4ERR_BAD_STATEID; 3092e72448bSAnna Schumaker return status; 310d826e5b8SOlga Kornievskaia } 3112e72448bSAnna Schumaker 312837bb1d7STrond Myklebust status = nfs_sync_inode(dst_inode); 313837bb1d7STrond Myklebust if (status) 314837bb1d7STrond Myklebust return status; 315837bb1d7STrond Myklebust 31662164f31SOlga Kornievskaia res->commit_res.verf = NULL; 31762164f31SOlga Kornievskaia if (args->sync) { 31862164f31SOlga Kornievskaia res->commit_res.verf = 31962164f31SOlga Kornievskaia kzalloc(sizeof(struct nfs_writeverf), GFP_NOFS); 320e0926934SOlga Kornievskaia if (!res->commit_res.verf) 321e0926934SOlga Kornievskaia return -ENOMEM; 32262164f31SOlga Kornievskaia } 3230e65a32cSOlga Kornievskaia set_bit(NFS_CLNT_SRC_SSC_COPY_STATE, 3240e65a32cSOlga Kornievskaia &src_lock->open_context->state->flags); 325e4648aa4SOlga Kornievskaia set_bit(NFS_CLNT_DST_SSC_COPY_STATE, 326e4648aa4SOlga Kornievskaia &dst_lock->open_context->state->flags); 327e4648aa4SOlga Kornievskaia 3280e65a32cSOlga Kornievskaia status = nfs4_call_sync(dst_server->client, dst_server, &msg, 3299d8cacbfSTrond Myklebust &args->seq_args, &res->seq_res, 0); 3302e72448bSAnna Schumaker if (status == -ENOTSUPP) 3310e65a32cSOlga Kornievskaia dst_server->caps &= ~NFS_CAP_COPY; 3322e72448bSAnna Schumaker if (status) 333e0926934SOlga Kornievskaia goto out; 3342e72448bSAnna Schumaker 33562164f31SOlga Kornievskaia if (args->sync && 33662164f31SOlga Kornievskaia nfs_write_verifier_cmp(&res->write_res.verifier.verifier, 337e0926934SOlga Kornievskaia &res->commit_res.verf->verifier)) { 338e0926934SOlga Kornievskaia status = -EAGAIN; 339e0926934SOlga Kornievskaia goto out; 3402e72448bSAnna Schumaker } 3412e72448bSAnna Schumaker 34262164f31SOlga Kornievskaia if (!res->synchronous) { 3430e65a32cSOlga Kornievskaia status = handle_async_copy(res, dst_server, src_server, src, 3440e65a32cSOlga Kornievskaia dst, &args->src_stateid, restart); 34562164f31SOlga Kornievskaia if (status) 34662164f31SOlga Kornievskaia return status; 34762164f31SOlga Kornievskaia } 34862164f31SOlga Kornievskaia 3496b8d84e2SOlga Kornievskaia if ((!res->synchronous || !args->sync) && 3506b8d84e2SOlga Kornievskaia res->write_res.verifier.committed != NFS_FILE_SYNC) { 3516b8d84e2SOlga Kornievskaia status = process_copy_commit(dst, pos_dst, res); 3526b8d84e2SOlga Kornievskaia if (status) 3536b8d84e2SOlga Kornievskaia return status; 3546b8d84e2SOlga Kornievskaia } 3556b8d84e2SOlga Kornievskaia 3562e72448bSAnna Schumaker truncate_pagecache_range(dst_inode, pos_dst, 3579d8cacbfSTrond Myklebust pos_dst + res->write_res.count); 3582e72448bSAnna Schumaker 359e0926934SOlga Kornievskaia status = res->write_res.count; 360e0926934SOlga Kornievskaia out: 36162164f31SOlga Kornievskaia if (args->sync) 362e0926934SOlga Kornievskaia kfree(res->commit_res.verf); 363e0926934SOlga Kornievskaia return status; 3642e72448bSAnna Schumaker } 3652e72448bSAnna Schumaker 3662e72448bSAnna Schumaker ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src, 3671d38f3f0SOlga Kornievskaia struct file *dst, loff_t pos_dst, size_t count, 3681d38f3f0SOlga Kornievskaia struct nl4_server *nss, 36912751010SOlga Kornievskaia nfs4_stateid *cnr_stateid, bool sync) 3702e72448bSAnna Schumaker { 3712e72448bSAnna Schumaker struct nfs_server *server = NFS_SERVER(file_inode(dst)); 3722e72448bSAnna Schumaker struct nfs_lock_context *src_lock; 3732e72448bSAnna Schumaker struct nfs_lock_context *dst_lock; 3749d8cacbfSTrond Myklebust struct nfs42_copy_args args = { 3759d8cacbfSTrond Myklebust .src_fh = NFS_FH(file_inode(src)), 3769d8cacbfSTrond Myklebust .src_pos = pos_src, 3779d8cacbfSTrond Myklebust .dst_fh = NFS_FH(file_inode(dst)), 3789d8cacbfSTrond Myklebust .dst_pos = pos_dst, 3799d8cacbfSTrond Myklebust .count = count, 38012751010SOlga Kornievskaia .sync = sync, 3819d8cacbfSTrond Myklebust }; 3829d8cacbfSTrond Myklebust struct nfs42_copy_res res; 3839d8cacbfSTrond Myklebust struct nfs4_exception src_exception = { 3849d8cacbfSTrond Myklebust .inode = file_inode(src), 3859d8cacbfSTrond Myklebust .stateid = &args.src_stateid, 3869d8cacbfSTrond Myklebust }; 3879d8cacbfSTrond Myklebust struct nfs4_exception dst_exception = { 3889d8cacbfSTrond Myklebust .inode = file_inode(dst), 3899d8cacbfSTrond Myklebust .stateid = &args.dst_stateid, 3909d8cacbfSTrond Myklebust }; 3912e72448bSAnna Schumaker ssize_t err, err2; 3920e65a32cSOlga Kornievskaia bool restart = false; 3932e72448bSAnna Schumaker 3942e72448bSAnna Schumaker src_lock = nfs_get_lock_context(nfs_file_open_context(src)); 3952e72448bSAnna Schumaker if (IS_ERR(src_lock)) 3962e72448bSAnna Schumaker return PTR_ERR(src_lock); 3972e72448bSAnna Schumaker 3982e72448bSAnna Schumaker src_exception.state = src_lock->open_context->state; 3992e72448bSAnna Schumaker 4002e72448bSAnna Schumaker dst_lock = nfs_get_lock_context(nfs_file_open_context(dst)); 4012e72448bSAnna Schumaker if (IS_ERR(dst_lock)) { 4022e72448bSAnna Schumaker err = PTR_ERR(dst_lock); 4032e72448bSAnna Schumaker goto out_put_src_lock; 4042e72448bSAnna Schumaker } 4052e72448bSAnna Schumaker 4062e72448bSAnna Schumaker dst_exception.state = dst_lock->open_context->state; 4072e72448bSAnna Schumaker 4082e72448bSAnna Schumaker do { 409ea8ea737SLinus Torvalds inode_lock(file_inode(dst)); 4109d8cacbfSTrond Myklebust err = _nfs42_proc_copy(src, src_lock, 4119d8cacbfSTrond Myklebust dst, dst_lock, 4121d38f3f0SOlga Kornievskaia &args, &res, 4130e65a32cSOlga Kornievskaia nss, cnr_stateid, &restart); 414ea8ea737SLinus Torvalds inode_unlock(file_inode(dst)); 4152e72448bSAnna Schumaker 4169d8cacbfSTrond Myklebust if (err >= 0) 4179d8cacbfSTrond Myklebust break; 41812406025SOlga Kornievskaia if (err == -ENOTSUPP && 41912406025SOlga Kornievskaia nfs42_files_from_same_server(src, dst)) { 4202e72448bSAnna Schumaker err = -EOPNOTSUPP; 4212e72448bSAnna Schumaker break; 422539f57b3SOlga Kornievskaia } else if (err == -EAGAIN) { 4230e65a32cSOlga Kornievskaia if (!restart) { 424539f57b3SOlga Kornievskaia dst_exception.retry = 1; 425539f57b3SOlga Kornievskaia continue; 4260e65a32cSOlga Kornievskaia } 4270e65a32cSOlga Kornievskaia break; 428539f57b3SOlga Kornievskaia } else if (err == -NFS4ERR_OFFLOAD_NO_REQS && !args.sync) { 429539f57b3SOlga Kornievskaia args.sync = true; 430e0926934SOlga Kornievskaia dst_exception.retry = 1; 431e0926934SOlga Kornievskaia continue; 4326b61c969SOlga Kornievskaia } else if ((err == -ESTALE || 43312406025SOlga Kornievskaia err == -NFS4ERR_OFFLOAD_DENIED || 43412406025SOlga Kornievskaia err == -ENOTSUPP) && 4357e350197SOlga Kornievskaia !nfs42_files_from_same_server(src, dst)) { 4367e350197SOlga Kornievskaia nfs42_do_offload_cancel_async(src, &args.src_stateid); 4377e350197SOlga Kornievskaia err = -EOPNOTSUPP; 4387e350197SOlga Kornievskaia break; 4392e72448bSAnna Schumaker } 4402e72448bSAnna Schumaker 4412e72448bSAnna Schumaker err2 = nfs4_handle_exception(server, err, &src_exception); 4422e72448bSAnna Schumaker err = nfs4_handle_exception(server, err, &dst_exception); 4432e72448bSAnna Schumaker if (!err) 4442e72448bSAnna Schumaker err = err2; 4452e72448bSAnna Schumaker } while (src_exception.retry || dst_exception.retry); 4462e72448bSAnna Schumaker 4472e72448bSAnna Schumaker nfs_put_lock_context(dst_lock); 4482e72448bSAnna Schumaker out_put_src_lock: 4492e72448bSAnna Schumaker nfs_put_lock_context(src_lock); 4502e72448bSAnna Schumaker return err; 4512e72448bSAnna Schumaker } 4522e72448bSAnna Schumaker 453c975c209SOlga Kornievskaia struct nfs42_offloadcancel_data { 454c975c209SOlga Kornievskaia struct nfs_server *seq_server; 455c975c209SOlga Kornievskaia struct nfs42_offload_status_args args; 456c975c209SOlga Kornievskaia struct nfs42_offload_status_res res; 457c975c209SOlga Kornievskaia }; 458c975c209SOlga Kornievskaia 459c975c209SOlga Kornievskaia static void nfs42_offload_cancel_prepare(struct rpc_task *task, void *calldata) 460c975c209SOlga Kornievskaia { 461c975c209SOlga Kornievskaia struct nfs42_offloadcancel_data *data = calldata; 462c975c209SOlga Kornievskaia 463c975c209SOlga Kornievskaia nfs4_setup_sequence(data->seq_server->nfs_client, 464c975c209SOlga Kornievskaia &data->args.osa_seq_args, 465c975c209SOlga Kornievskaia &data->res.osr_seq_res, task); 466c975c209SOlga Kornievskaia } 467c975c209SOlga Kornievskaia 468c975c209SOlga Kornievskaia static void nfs42_offload_cancel_done(struct rpc_task *task, void *calldata) 469c975c209SOlga Kornievskaia { 470c975c209SOlga Kornievskaia struct nfs42_offloadcancel_data *data = calldata; 471c975c209SOlga Kornievskaia 472c975c209SOlga Kornievskaia nfs41_sequence_done(task, &data->res.osr_seq_res); 473c975c209SOlga Kornievskaia if (task->tk_status && 474c975c209SOlga Kornievskaia nfs4_async_handle_error(task, data->seq_server, NULL, 475c975c209SOlga Kornievskaia NULL) == -EAGAIN) 476c975c209SOlga Kornievskaia rpc_restart_call_prepare(task); 477c975c209SOlga Kornievskaia } 478c975c209SOlga Kornievskaia 479c975c209SOlga Kornievskaia static void nfs42_free_offloadcancel_data(void *data) 480c975c209SOlga Kornievskaia { 481c975c209SOlga Kornievskaia kfree(data); 482c975c209SOlga Kornievskaia } 483c975c209SOlga Kornievskaia 484c975c209SOlga Kornievskaia static const struct rpc_call_ops nfs42_offload_cancel_ops = { 485c975c209SOlga Kornievskaia .rpc_call_prepare = nfs42_offload_cancel_prepare, 486c975c209SOlga Kornievskaia .rpc_call_done = nfs42_offload_cancel_done, 487c975c209SOlga Kornievskaia .rpc_release = nfs42_free_offloadcancel_data, 488c975c209SOlga Kornievskaia }; 489c975c209SOlga Kornievskaia 490c975c209SOlga Kornievskaia static int nfs42_do_offload_cancel_async(struct file *dst, 491c975c209SOlga Kornievskaia nfs4_stateid *stateid) 492c975c209SOlga Kornievskaia { 493c975c209SOlga Kornievskaia struct nfs_server *dst_server = NFS_SERVER(file_inode(dst)); 494c975c209SOlga Kornievskaia struct nfs42_offloadcancel_data *data = NULL; 495c975c209SOlga Kornievskaia struct nfs_open_context *ctx = nfs_file_open_context(dst); 496c975c209SOlga Kornievskaia struct rpc_task *task; 497c975c209SOlga Kornievskaia struct rpc_message msg = { 498c975c209SOlga Kornievskaia .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OFFLOAD_CANCEL], 499c975c209SOlga Kornievskaia .rpc_cred = ctx->cred, 500c975c209SOlga Kornievskaia }; 501c975c209SOlga Kornievskaia struct rpc_task_setup task_setup_data = { 502c975c209SOlga Kornievskaia .rpc_client = dst_server->client, 503c975c209SOlga Kornievskaia .rpc_message = &msg, 504c975c209SOlga Kornievskaia .callback_ops = &nfs42_offload_cancel_ops, 505c975c209SOlga Kornievskaia .workqueue = nfsiod_workqueue, 506c975c209SOlga Kornievskaia .flags = RPC_TASK_ASYNC, 507c975c209SOlga Kornievskaia }; 508c975c209SOlga Kornievskaia int status; 509c975c209SOlga Kornievskaia 510c975c209SOlga Kornievskaia if (!(dst_server->caps & NFS_CAP_OFFLOAD_CANCEL)) 511c975c209SOlga Kornievskaia return -EOPNOTSUPP; 512c975c209SOlga Kornievskaia 513c975c209SOlga Kornievskaia data = kzalloc(sizeof(struct nfs42_offloadcancel_data), GFP_NOFS); 514c975c209SOlga Kornievskaia if (data == NULL) 515c975c209SOlga Kornievskaia return -ENOMEM; 516c975c209SOlga Kornievskaia 517c975c209SOlga Kornievskaia data->seq_server = dst_server; 518c975c209SOlga Kornievskaia data->args.osa_src_fh = NFS_FH(file_inode(dst)); 519c975c209SOlga Kornievskaia memcpy(&data->args.osa_stateid, stateid, 520c975c209SOlga Kornievskaia sizeof(data->args.osa_stateid)); 521c975c209SOlga Kornievskaia msg.rpc_argp = &data->args; 522c975c209SOlga Kornievskaia msg.rpc_resp = &data->res; 523c975c209SOlga Kornievskaia task_setup_data.callback_data = data; 524c975c209SOlga Kornievskaia nfs4_init_sequence(&data->args.osa_seq_args, &data->res.osr_seq_res, 525c975c209SOlga Kornievskaia 1, 0); 526c975c209SOlga Kornievskaia task = rpc_run_task(&task_setup_data); 527c975c209SOlga Kornievskaia if (IS_ERR(task)) 528c975c209SOlga Kornievskaia return PTR_ERR(task); 529c975c209SOlga Kornievskaia status = rpc_wait_for_completion_task(task); 530c975c209SOlga Kornievskaia if (status == -ENOTSUPP) 531c975c209SOlga Kornievskaia dst_server->caps &= ~NFS_CAP_OFFLOAD_CANCEL; 532c975c209SOlga Kornievskaia rpc_put_task(task); 533c975c209SOlga Kornievskaia return status; 534c975c209SOlga Kornievskaia } 535c975c209SOlga Kornievskaia 53600030104SYueHaibing static int _nfs42_proc_copy_notify(struct file *src, struct file *dst, 5370491567bSOlga Kornievskaia struct nfs42_copy_notify_args *args, 5380491567bSOlga Kornievskaia struct nfs42_copy_notify_res *res) 5390491567bSOlga Kornievskaia { 5400491567bSOlga Kornievskaia struct nfs_server *src_server = NFS_SERVER(file_inode(src)); 5410491567bSOlga Kornievskaia struct rpc_message msg = { 5420491567bSOlga Kornievskaia .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COPY_NOTIFY], 5430491567bSOlga Kornievskaia .rpc_argp = args, 5440491567bSOlga Kornievskaia .rpc_resp = res, 5450491567bSOlga Kornievskaia }; 5460491567bSOlga Kornievskaia int status; 5470491567bSOlga Kornievskaia struct nfs_open_context *ctx; 5480491567bSOlga Kornievskaia struct nfs_lock_context *l_ctx; 5490491567bSOlga Kornievskaia 5500491567bSOlga Kornievskaia ctx = get_nfs_open_context(nfs_file_open_context(src)); 5510491567bSOlga Kornievskaia l_ctx = nfs_get_lock_context(ctx); 5520491567bSOlga Kornievskaia if (IS_ERR(l_ctx)) 5530491567bSOlga Kornievskaia return PTR_ERR(l_ctx); 5540491567bSOlga Kornievskaia 5550491567bSOlga Kornievskaia status = nfs4_set_rw_stateid(&args->cna_src_stateid, ctx, l_ctx, 5560491567bSOlga Kornievskaia FMODE_READ); 5570491567bSOlga Kornievskaia nfs_put_lock_context(l_ctx); 558d826e5b8SOlga Kornievskaia if (status) { 559d826e5b8SOlga Kornievskaia if (status == -EAGAIN) 560d826e5b8SOlga Kornievskaia status = -NFS4ERR_BAD_STATEID; 5610491567bSOlga Kornievskaia return status; 562d826e5b8SOlga Kornievskaia } 5630491567bSOlga Kornievskaia 5640491567bSOlga Kornievskaia status = nfs4_call_sync(src_server->client, src_server, &msg, 5650491567bSOlga Kornievskaia &args->cna_seq_args, &res->cnr_seq_res, 0); 5660491567bSOlga Kornievskaia if (status == -ENOTSUPP) 5670491567bSOlga Kornievskaia src_server->caps &= ~NFS_CAP_COPY_NOTIFY; 5680491567bSOlga Kornievskaia 5690491567bSOlga Kornievskaia put_nfs_open_context(nfs_file_open_context(src)); 5700491567bSOlga Kornievskaia return status; 5710491567bSOlga Kornievskaia } 5720491567bSOlga Kornievskaia 5730491567bSOlga Kornievskaia int nfs42_proc_copy_notify(struct file *src, struct file *dst, 5740491567bSOlga Kornievskaia struct nfs42_copy_notify_res *res) 5750491567bSOlga Kornievskaia { 5760491567bSOlga Kornievskaia struct nfs_server *src_server = NFS_SERVER(file_inode(src)); 5770491567bSOlga Kornievskaia struct nfs42_copy_notify_args *args; 5780491567bSOlga Kornievskaia struct nfs4_exception exception = { 5790491567bSOlga Kornievskaia .inode = file_inode(src), 5800491567bSOlga Kornievskaia }; 5810491567bSOlga Kornievskaia int status; 5820491567bSOlga Kornievskaia 5830491567bSOlga Kornievskaia if (!(src_server->caps & NFS_CAP_COPY_NOTIFY)) 5840491567bSOlga Kornievskaia return -EOPNOTSUPP; 5850491567bSOlga Kornievskaia 5860491567bSOlga Kornievskaia args = kzalloc(sizeof(struct nfs42_copy_notify_args), GFP_NOFS); 5870491567bSOlga Kornievskaia if (args == NULL) 5880491567bSOlga Kornievskaia return -ENOMEM; 5890491567bSOlga Kornievskaia 5900491567bSOlga Kornievskaia args->cna_src_fh = NFS_FH(file_inode(src)), 5910491567bSOlga Kornievskaia args->cna_dst.nl4_type = NL4_NETADDR; 5920491567bSOlga Kornievskaia nfs42_set_netaddr(dst, &args->cna_dst.u.nl4_addr); 5930491567bSOlga Kornievskaia exception.stateid = &args->cna_src_stateid; 5940491567bSOlga Kornievskaia 5950491567bSOlga Kornievskaia do { 5960491567bSOlga Kornievskaia status = _nfs42_proc_copy_notify(src, dst, args, res); 5970491567bSOlga Kornievskaia if (status == -ENOTSUPP) { 5980491567bSOlga Kornievskaia status = -EOPNOTSUPP; 5990491567bSOlga Kornievskaia goto out; 6000491567bSOlga Kornievskaia } 6010491567bSOlga Kornievskaia status = nfs4_handle_exception(src_server, status, &exception); 6020491567bSOlga Kornievskaia } while (exception.retry); 6030491567bSOlga Kornievskaia 6040491567bSOlga Kornievskaia out: 6050491567bSOlga Kornievskaia kfree(args); 6060491567bSOlga Kornievskaia return status; 6070491567bSOlga Kornievskaia } 6080491567bSOlga Kornievskaia 6094bdf87ebSChristoph Hellwig static loff_t _nfs42_proc_llseek(struct file *filep, 6104bdf87ebSChristoph Hellwig struct nfs_lock_context *lock, loff_t offset, int whence) 6111c6dcbe5SAnna Schumaker { 6121c6dcbe5SAnna Schumaker struct inode *inode = file_inode(filep); 6131c6dcbe5SAnna Schumaker struct nfs42_seek_args args = { 6141c6dcbe5SAnna Schumaker .sa_fh = NFS_FH(inode), 6151c6dcbe5SAnna Schumaker .sa_offset = offset, 6161c6dcbe5SAnna Schumaker .sa_what = (whence == SEEK_HOLE) ? 6171c6dcbe5SAnna Schumaker NFS4_CONTENT_HOLE : NFS4_CONTENT_DATA, 6181c6dcbe5SAnna Schumaker }; 6191c6dcbe5SAnna Schumaker struct nfs42_seek_res res; 6201c6dcbe5SAnna Schumaker struct rpc_message msg = { 6211c6dcbe5SAnna Schumaker .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SEEK], 6221c6dcbe5SAnna Schumaker .rpc_argp = &args, 6231c6dcbe5SAnna Schumaker .rpc_resp = &res, 6241c6dcbe5SAnna Schumaker }; 6251c6dcbe5SAnna Schumaker struct nfs_server *server = NFS_SERVER(inode); 6261c6dcbe5SAnna Schumaker int status; 6271c6dcbe5SAnna Schumaker 628878ffa9fSAnna Schumaker if (!nfs_server_capable(inode, NFS_CAP_SEEK)) 6291c6dcbe5SAnna Schumaker return -ENOTSUPP; 6301c6dcbe5SAnna Schumaker 6314bdf87ebSChristoph Hellwig status = nfs4_set_rw_stateid(&args.sa_stateid, lock->open_context, 6324bdf87ebSChristoph Hellwig lock, FMODE_READ); 633d826e5b8SOlga Kornievskaia if (status) { 634d826e5b8SOlga Kornievskaia if (status == -EAGAIN) 635d826e5b8SOlga Kornievskaia status = -NFS4ERR_BAD_STATEID; 6361c6dcbe5SAnna Schumaker return status; 637d826e5b8SOlga Kornievskaia } 6381c6dcbe5SAnna Schumaker 639e95fc4a0STrond Myklebust status = nfs_filemap_write_and_wait_range(inode->i_mapping, 640e95fc4a0STrond Myklebust offset, LLONG_MAX); 641e95fc4a0STrond Myklebust if (status) 642e95fc4a0STrond Myklebust return status; 643e95fc4a0STrond Myklebust 6441c6dcbe5SAnna Schumaker status = nfs4_call_sync(server->client, server, &msg, 6451c6dcbe5SAnna Schumaker &args.seq_args, &res.seq_res, 0); 6461c6dcbe5SAnna Schumaker if (status == -ENOTSUPP) 6471c6dcbe5SAnna Schumaker server->caps &= ~NFS_CAP_SEEK; 6481c6dcbe5SAnna Schumaker if (status) 6491c6dcbe5SAnna Schumaker return status; 6501c6dcbe5SAnna Schumaker 6511c6dcbe5SAnna Schumaker return vfs_setpos(filep, res.sr_offset, inode->i_sb->s_maxbytes); 6521c6dcbe5SAnna Schumaker } 653be3a5d23STrond Myklebust 654bdcc2cd1SJ. Bruce Fields loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence) 655bdcc2cd1SJ. Bruce Fields { 656bdcc2cd1SJ. Bruce Fields struct nfs_server *server = NFS_SERVER(file_inode(filep)); 657bdcc2cd1SJ. Bruce Fields struct nfs4_exception exception = { }; 6584bdf87ebSChristoph Hellwig struct nfs_lock_context *lock; 659306a5549SJ. Bruce Fields loff_t err; 660bdcc2cd1SJ. Bruce Fields 6614bdf87ebSChristoph Hellwig lock = nfs_get_lock_context(nfs_file_open_context(filep)); 6624bdf87ebSChristoph Hellwig if (IS_ERR(lock)) 6634bdf87ebSChristoph Hellwig return PTR_ERR(lock); 6644bdf87ebSChristoph Hellwig 6654bdf87ebSChristoph Hellwig exception.inode = file_inode(filep); 6664bdf87ebSChristoph Hellwig exception.state = lock->open_context->state; 6674bdf87ebSChristoph Hellwig 668bdcc2cd1SJ. Bruce Fields do { 6694bdf87ebSChristoph Hellwig err = _nfs42_proc_llseek(filep, lock, offset, whence); 670306a5549SJ. Bruce Fields if (err >= 0) 671306a5549SJ. Bruce Fields break; 6724bdf87ebSChristoph Hellwig if (err == -ENOTSUPP) { 6734bdf87ebSChristoph Hellwig err = -EOPNOTSUPP; 6744bdf87ebSChristoph Hellwig break; 6754bdf87ebSChristoph Hellwig } 676bdcc2cd1SJ. Bruce Fields err = nfs4_handle_exception(server, err, &exception); 677bdcc2cd1SJ. Bruce Fields } while (exception.retry); 678bdcc2cd1SJ. Bruce Fields 6794bdf87ebSChristoph Hellwig nfs_put_lock_context(lock); 680bdcc2cd1SJ. Bruce Fields return err; 681bdcc2cd1SJ. Bruce Fields } 682bdcc2cd1SJ. Bruce Fields 683bdcc2cd1SJ. Bruce Fields 6841b4a4bd8SPeng Tao static void 6851b4a4bd8SPeng Tao nfs42_layoutstat_prepare(struct rpc_task *task, void *calldata) 6861b4a4bd8SPeng Tao { 6871b4a4bd8SPeng Tao struct nfs42_layoutstat_data *data = calldata; 6889a0fe867STrond Myklebust struct inode *inode = data->inode; 6899a0fe867STrond Myklebust struct nfs_server *server = NFS_SERVER(inode); 6909a0fe867STrond Myklebust struct pnfs_layout_hdr *lo; 6911b4a4bd8SPeng Tao 6929a0fe867STrond Myklebust spin_lock(&inode->i_lock); 6939a0fe867STrond Myklebust lo = NFS_I(inode)->layout; 6949a0fe867STrond Myklebust if (!pnfs_layout_is_valid(lo)) { 6959a0fe867STrond Myklebust spin_unlock(&inode->i_lock); 6969a0fe867STrond Myklebust rpc_exit(task, 0); 6979a0fe867STrond Myklebust return; 6989a0fe867STrond Myklebust } 6999a0fe867STrond Myklebust nfs4_stateid_copy(&data->args.stateid, &lo->plh_stateid); 7009a0fe867STrond Myklebust spin_unlock(&inode->i_lock); 7016de7e12fSAnna Schumaker nfs4_setup_sequence(server->nfs_client, &data->args.seq_args, 7026de7e12fSAnna Schumaker &data->res.seq_res, task); 7031b4a4bd8SPeng Tao } 7041b4a4bd8SPeng Tao 7051b4a4bd8SPeng Tao static void 7061b4a4bd8SPeng Tao nfs42_layoutstat_done(struct rpc_task *task, void *calldata) 7071b4a4bd8SPeng Tao { 7081b4a4bd8SPeng Tao struct nfs42_layoutstat_data *data = calldata; 70968d264cfSPeng Tao struct inode *inode = data->inode; 71068d264cfSPeng Tao struct pnfs_layout_hdr *lo; 7111b4a4bd8SPeng Tao 7121b4a4bd8SPeng Tao if (!nfs4_sequence_done(task, &data->res.seq_res)) 7131b4a4bd8SPeng Tao return; 7141b4a4bd8SPeng Tao 7156c5a0d89STrond Myklebust switch (task->tk_status) { 7166c5a0d89STrond Myklebust case 0: 7176c5a0d89STrond Myklebust break; 718cf61eb26STrond Myklebust case -NFS4ERR_BADHANDLE: 719cf61eb26STrond Myklebust case -ESTALE: 720cf61eb26STrond Myklebust pnfs_destroy_layout(NFS_I(inode)); 721cf61eb26STrond Myklebust break; 72268d264cfSPeng Tao case -NFS4ERR_EXPIRED: 723206b3bb5STrond Myklebust case -NFS4ERR_ADMIN_REVOKED: 724206b3bb5STrond Myklebust case -NFS4ERR_DELEG_REVOKED: 72568d264cfSPeng Tao case -NFS4ERR_STALE_STATEID: 72668d264cfSPeng Tao case -NFS4ERR_BAD_STATEID: 72768d264cfSPeng Tao spin_lock(&inode->i_lock); 72868d264cfSPeng Tao lo = NFS_I(inode)->layout; 7299a0fe867STrond Myklebust if (pnfs_layout_is_valid(lo) && 7309a0fe867STrond Myklebust nfs4_stateid_match(&data->args.stateid, 73168d264cfSPeng Tao &lo->plh_stateid)) { 73268d264cfSPeng Tao LIST_HEAD(head); 73368d264cfSPeng Tao 73468d264cfSPeng Tao /* 73568d264cfSPeng Tao * Mark the bad layout state as invalid, then retry 73668d264cfSPeng Tao * with the current stateid. 73768d264cfSPeng Tao */ 7385f46be04STrond Myklebust pnfs_mark_layout_stateid_invalid(lo, &head); 73968d264cfSPeng Tao spin_unlock(&inode->i_lock); 74068d264cfSPeng Tao pnfs_free_lseg_list(&head); 7411f18b82cSTrond Myklebust nfs_commit_inode(inode, 0); 74268d264cfSPeng Tao } else 74368d264cfSPeng Tao spin_unlock(&inode->i_lock); 74468d264cfSPeng Tao break; 7459a0fe867STrond Myklebust case -NFS4ERR_OLD_STATEID: 7469a0fe867STrond Myklebust spin_lock(&inode->i_lock); 7479a0fe867STrond Myklebust lo = NFS_I(inode)->layout; 7489a0fe867STrond Myklebust if (pnfs_layout_is_valid(lo) && 7499a0fe867STrond Myklebust nfs4_stateid_match_other(&data->args.stateid, 7509a0fe867STrond Myklebust &lo->plh_stateid)) { 7519a0fe867STrond Myklebust /* Do we need to delay before resending? */ 7529a0fe867STrond Myklebust if (!nfs4_stateid_is_newer(&lo->plh_stateid, 7539a0fe867STrond Myklebust &data->args.stateid)) 7549a0fe867STrond Myklebust rpc_delay(task, HZ); 7559a0fe867STrond Myklebust rpc_restart_call_prepare(task); 7569a0fe867STrond Myklebust } 7579a0fe867STrond Myklebust spin_unlock(&inode->i_lock); 7589a0fe867STrond Myklebust break; 7596c5a0d89STrond Myklebust case -ENOTSUPP: 7606c5a0d89STrond Myklebust case -EOPNOTSUPP: 76168d264cfSPeng Tao NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTSTATS; 7621b4a4bd8SPeng Tao } 7636c5a0d89STrond Myklebust } 7641b4a4bd8SPeng Tao 7651b4a4bd8SPeng Tao static void 7661b4a4bd8SPeng Tao nfs42_layoutstat_release(void *calldata) 7671b4a4bd8SPeng Tao { 7681b4a4bd8SPeng Tao struct nfs42_layoutstat_data *data = calldata; 769422c93c8STrond Myklebust struct nfs42_layoutstat_devinfo *devinfo = data->args.devinfo; 770422c93c8STrond Myklebust int i; 7718733408dSPeng Tao 772422c93c8STrond Myklebust for (i = 0; i < data->args.num_dev; i++) { 773422c93c8STrond Myklebust if (devinfo[i].ld_private.ops && devinfo[i].ld_private.ops->free) 774422c93c8STrond Myklebust devinfo[i].ld_private.ops->free(&devinfo[i].ld_private); 775422c93c8STrond Myklebust } 7761b4a4bd8SPeng Tao 7771b4a4bd8SPeng Tao pnfs_put_layout_hdr(NFS_I(data->args.inode)->layout); 7781bfe3b25SPeng Tao smp_mb__before_atomic(); 7791bfe3b25SPeng Tao clear_bit(NFS_INO_LAYOUTSTATS, &NFS_I(data->args.inode)->flags); 7801bfe3b25SPeng Tao smp_mb__after_atomic(); 7811b4a4bd8SPeng Tao nfs_iput_and_deactive(data->inode); 7821b4a4bd8SPeng Tao kfree(data->args.devinfo); 7831b4a4bd8SPeng Tao kfree(data); 7841b4a4bd8SPeng Tao } 7851b4a4bd8SPeng Tao 786be3a5d23STrond Myklebust static const struct rpc_call_ops nfs42_layoutstat_ops = { 7871b4a4bd8SPeng Tao .rpc_call_prepare = nfs42_layoutstat_prepare, 7881b4a4bd8SPeng Tao .rpc_call_done = nfs42_layoutstat_done, 7891b4a4bd8SPeng Tao .rpc_release = nfs42_layoutstat_release, 790be3a5d23STrond Myklebust }; 791be3a5d23STrond Myklebust 792be3a5d23STrond Myklebust int nfs42_proc_layoutstats_generic(struct nfs_server *server, 793be3a5d23STrond Myklebust struct nfs42_layoutstat_data *data) 794be3a5d23STrond Myklebust { 795be3a5d23STrond Myklebust struct rpc_message msg = { 796be3a5d23STrond Myklebust .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTSTATS], 797be3a5d23STrond Myklebust .rpc_argp = &data->args, 798be3a5d23STrond Myklebust .rpc_resp = &data->res, 799be3a5d23STrond Myklebust }; 800be3a5d23STrond Myklebust struct rpc_task_setup task_setup = { 801be3a5d23STrond Myklebust .rpc_client = server->client, 802be3a5d23STrond Myklebust .rpc_message = &msg, 803be3a5d23STrond Myklebust .callback_ops = &nfs42_layoutstat_ops, 804be3a5d23STrond Myklebust .callback_data = data, 805be3a5d23STrond Myklebust .flags = RPC_TASK_ASYNC, 806be3a5d23STrond Myklebust }; 807be3a5d23STrond Myklebust struct rpc_task *task; 808be3a5d23STrond Myklebust 8091b4a4bd8SPeng Tao data->inode = nfs_igrab_and_active(data->args.inode); 8101b4a4bd8SPeng Tao if (!data->inode) { 8111b4a4bd8SPeng Tao nfs42_layoutstat_release(data); 8121b4a4bd8SPeng Tao return -EAGAIN; 8131b4a4bd8SPeng Tao } 814fba83f34SAnna Schumaker nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0, 0); 815be3a5d23STrond Myklebust task = rpc_run_task(&task_setup); 816be3a5d23STrond Myklebust if (IS_ERR(task)) 817be3a5d23STrond Myklebust return PTR_ERR(task); 8183f807e5aSJeff Layton rpc_put_task(task); 819be3a5d23STrond Myklebust return 0; 820be3a5d23STrond Myklebust } 821e5341f3aSPeng Tao 8223eb86093STrond Myklebust static struct nfs42_layouterror_data * 8233eb86093STrond Myklebust nfs42_alloc_layouterror_data(struct pnfs_layout_segment *lseg, gfp_t gfp_flags) 8243eb86093STrond Myklebust { 8253eb86093STrond Myklebust struct nfs42_layouterror_data *data; 8263eb86093STrond Myklebust struct inode *inode = lseg->pls_layout->plh_inode; 8273eb86093STrond Myklebust 8283eb86093STrond Myklebust data = kzalloc(sizeof(*data), gfp_flags); 8293eb86093STrond Myklebust if (data) { 8303eb86093STrond Myklebust data->args.inode = data->inode = nfs_igrab_and_active(inode); 8313eb86093STrond Myklebust if (data->inode) { 8323eb86093STrond Myklebust data->lseg = pnfs_get_lseg(lseg); 8333eb86093STrond Myklebust if (data->lseg) 8343eb86093STrond Myklebust return data; 8353eb86093STrond Myklebust nfs_iput_and_deactive(data->inode); 8363eb86093STrond Myklebust } 8373eb86093STrond Myklebust kfree(data); 8383eb86093STrond Myklebust } 8393eb86093STrond Myklebust return NULL; 8403eb86093STrond Myklebust } 8413eb86093STrond Myklebust 8423eb86093STrond Myklebust static void 8433eb86093STrond Myklebust nfs42_free_layouterror_data(struct nfs42_layouterror_data *data) 8443eb86093STrond Myklebust { 8453eb86093STrond Myklebust pnfs_put_lseg(data->lseg); 8463eb86093STrond Myklebust nfs_iput_and_deactive(data->inode); 8473eb86093STrond Myklebust kfree(data); 8483eb86093STrond Myklebust } 8493eb86093STrond Myklebust 8503eb86093STrond Myklebust static void 8513eb86093STrond Myklebust nfs42_layouterror_prepare(struct rpc_task *task, void *calldata) 8523eb86093STrond Myklebust { 8533eb86093STrond Myklebust struct nfs42_layouterror_data *data = calldata; 8543eb86093STrond Myklebust struct inode *inode = data->inode; 8553eb86093STrond Myklebust struct nfs_server *server = NFS_SERVER(inode); 8563eb86093STrond Myklebust struct pnfs_layout_hdr *lo = data->lseg->pls_layout; 8573eb86093STrond Myklebust unsigned i; 8583eb86093STrond Myklebust 8593eb86093STrond Myklebust spin_lock(&inode->i_lock); 8603eb86093STrond Myklebust if (!pnfs_layout_is_valid(lo)) { 8613eb86093STrond Myklebust spin_unlock(&inode->i_lock); 8623eb86093STrond Myklebust rpc_exit(task, 0); 8633eb86093STrond Myklebust return; 8643eb86093STrond Myklebust } 8653eb86093STrond Myklebust for (i = 0; i < data->args.num_errors; i++) 8663eb86093STrond Myklebust nfs4_stateid_copy(&data->args.errors[i].stateid, 8673eb86093STrond Myklebust &lo->plh_stateid); 8683eb86093STrond Myklebust spin_unlock(&inode->i_lock); 8693eb86093STrond Myklebust nfs4_setup_sequence(server->nfs_client, &data->args.seq_args, 8703eb86093STrond Myklebust &data->res.seq_res, task); 8713eb86093STrond Myklebust } 8723eb86093STrond Myklebust 8733eb86093STrond Myklebust static void 8743eb86093STrond Myklebust nfs42_layouterror_done(struct rpc_task *task, void *calldata) 8753eb86093STrond Myklebust { 8763eb86093STrond Myklebust struct nfs42_layouterror_data *data = calldata; 8773eb86093STrond Myklebust struct inode *inode = data->inode; 8783eb86093STrond Myklebust struct pnfs_layout_hdr *lo = data->lseg->pls_layout; 8793eb86093STrond Myklebust 8803eb86093STrond Myklebust if (!nfs4_sequence_done(task, &data->res.seq_res)) 8813eb86093STrond Myklebust return; 8823eb86093STrond Myklebust 8833eb86093STrond Myklebust switch (task->tk_status) { 8843eb86093STrond Myklebust case 0: 8853eb86093STrond Myklebust break; 8863eb86093STrond Myklebust case -NFS4ERR_BADHANDLE: 8873eb86093STrond Myklebust case -ESTALE: 8883eb86093STrond Myklebust pnfs_destroy_layout(NFS_I(inode)); 8893eb86093STrond Myklebust break; 8903eb86093STrond Myklebust case -NFS4ERR_EXPIRED: 8913eb86093STrond Myklebust case -NFS4ERR_ADMIN_REVOKED: 8923eb86093STrond Myklebust case -NFS4ERR_DELEG_REVOKED: 8933eb86093STrond Myklebust case -NFS4ERR_STALE_STATEID: 8943eb86093STrond Myklebust case -NFS4ERR_BAD_STATEID: 8953eb86093STrond Myklebust spin_lock(&inode->i_lock); 8963eb86093STrond Myklebust if (pnfs_layout_is_valid(lo) && 8973eb86093STrond Myklebust nfs4_stateid_match(&data->args.errors[0].stateid, 8983eb86093STrond Myklebust &lo->plh_stateid)) { 8993eb86093STrond Myklebust LIST_HEAD(head); 9003eb86093STrond Myklebust 9013eb86093STrond Myklebust /* 9023eb86093STrond Myklebust * Mark the bad layout state as invalid, then retry 9033eb86093STrond Myklebust * with the current stateid. 9043eb86093STrond Myklebust */ 9053eb86093STrond Myklebust pnfs_mark_layout_stateid_invalid(lo, &head); 9063eb86093STrond Myklebust spin_unlock(&inode->i_lock); 9073eb86093STrond Myklebust pnfs_free_lseg_list(&head); 9083eb86093STrond Myklebust nfs_commit_inode(inode, 0); 9093eb86093STrond Myklebust } else 9103eb86093STrond Myklebust spin_unlock(&inode->i_lock); 9113eb86093STrond Myklebust break; 9123eb86093STrond Myklebust case -NFS4ERR_OLD_STATEID: 9133eb86093STrond Myklebust spin_lock(&inode->i_lock); 9143eb86093STrond Myklebust if (pnfs_layout_is_valid(lo) && 9153eb86093STrond Myklebust nfs4_stateid_match_other(&data->args.errors[0].stateid, 9163eb86093STrond Myklebust &lo->plh_stateid)) { 9173eb86093STrond Myklebust /* Do we need to delay before resending? */ 9183eb86093STrond Myklebust if (!nfs4_stateid_is_newer(&lo->plh_stateid, 9193eb86093STrond Myklebust &data->args.errors[0].stateid)) 9203eb86093STrond Myklebust rpc_delay(task, HZ); 9213eb86093STrond Myklebust rpc_restart_call_prepare(task); 9223eb86093STrond Myklebust } 9233eb86093STrond Myklebust spin_unlock(&inode->i_lock); 9243eb86093STrond Myklebust break; 9253eb86093STrond Myklebust case -ENOTSUPP: 9263eb86093STrond Myklebust case -EOPNOTSUPP: 9273eb86093STrond Myklebust NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTERROR; 9283eb86093STrond Myklebust } 9293eb86093STrond Myklebust } 9303eb86093STrond Myklebust 9313eb86093STrond Myklebust static void 9323eb86093STrond Myklebust nfs42_layouterror_release(void *calldata) 9333eb86093STrond Myklebust { 9343eb86093STrond Myklebust struct nfs42_layouterror_data *data = calldata; 9353eb86093STrond Myklebust 9363eb86093STrond Myklebust nfs42_free_layouterror_data(data); 9373eb86093STrond Myklebust } 9383eb86093STrond Myklebust 9393eb86093STrond Myklebust static const struct rpc_call_ops nfs42_layouterror_ops = { 9403eb86093STrond Myklebust .rpc_call_prepare = nfs42_layouterror_prepare, 9413eb86093STrond Myklebust .rpc_call_done = nfs42_layouterror_done, 9423eb86093STrond Myklebust .rpc_release = nfs42_layouterror_release, 9433eb86093STrond Myklebust }; 9443eb86093STrond Myklebust 9453eb86093STrond Myklebust int nfs42_proc_layouterror(struct pnfs_layout_segment *lseg, 9463eb86093STrond Myklebust const struct nfs42_layout_error *errors, size_t n) 9473eb86093STrond Myklebust { 9483eb86093STrond Myklebust struct inode *inode = lseg->pls_layout->plh_inode; 9493eb86093STrond Myklebust struct nfs42_layouterror_data *data; 9503eb86093STrond Myklebust struct rpc_task *task; 9513eb86093STrond Myklebust struct rpc_message msg = { 9523eb86093STrond Myklebust .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTERROR], 9533eb86093STrond Myklebust }; 9543eb86093STrond Myklebust struct rpc_task_setup task_setup = { 9553eb86093STrond Myklebust .rpc_message = &msg, 9563eb86093STrond Myklebust .callback_ops = &nfs42_layouterror_ops, 9573eb86093STrond Myklebust .flags = RPC_TASK_ASYNC, 9583eb86093STrond Myklebust }; 9593eb86093STrond Myklebust unsigned int i; 9603eb86093STrond Myklebust 9613eb86093STrond Myklebust if (!nfs_server_capable(inode, NFS_CAP_LAYOUTERROR)) 9623eb86093STrond Myklebust return -EOPNOTSUPP; 9633eb86093STrond Myklebust if (n > NFS42_LAYOUTERROR_MAX) 9643eb86093STrond Myklebust return -EINVAL; 9653eb86093STrond Myklebust data = nfs42_alloc_layouterror_data(lseg, GFP_NOFS); 9663eb86093STrond Myklebust if (!data) 9673eb86093STrond Myklebust return -ENOMEM; 9683eb86093STrond Myklebust for (i = 0; i < n; i++) { 9693eb86093STrond Myklebust data->args.errors[i] = errors[i]; 9703eb86093STrond Myklebust data->args.num_errors++; 9713eb86093STrond Myklebust data->res.num_errors++; 9723eb86093STrond Myklebust } 9733eb86093STrond Myklebust msg.rpc_argp = &data->args; 9743eb86093STrond Myklebust msg.rpc_resp = &data->res; 9753eb86093STrond Myklebust task_setup.callback_data = data; 9763eb86093STrond Myklebust task_setup.rpc_client = NFS_SERVER(inode)->client; 9773eb86093STrond Myklebust nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0, 0); 9783eb86093STrond Myklebust task = rpc_run_task(&task_setup); 9793eb86093STrond Myklebust if (IS_ERR(task)) 9803eb86093STrond Myklebust return PTR_ERR(task); 9813eb86093STrond Myklebust rpc_put_task(task); 9823eb86093STrond Myklebust return 0; 9833eb86093STrond Myklebust } 9843eb86093STrond Myklebust EXPORT_SYMBOL_GPL(nfs42_proc_layouterror); 9853eb86093STrond Myklebust 986e5341f3aSPeng Tao static int _nfs42_proc_clone(struct rpc_message *msg, struct file *src_f, 9874bdf87ebSChristoph Hellwig struct file *dst_f, struct nfs_lock_context *src_lock, 9884bdf87ebSChristoph Hellwig struct nfs_lock_context *dst_lock, loff_t src_offset, 989e5341f3aSPeng Tao loff_t dst_offset, loff_t count) 990e5341f3aSPeng Tao { 991e5341f3aSPeng Tao struct inode *src_inode = file_inode(src_f); 992e5341f3aSPeng Tao struct inode *dst_inode = file_inode(dst_f); 993e5341f3aSPeng Tao struct nfs_server *server = NFS_SERVER(dst_inode); 994e5341f3aSPeng Tao struct nfs42_clone_args args = { 995e5341f3aSPeng Tao .src_fh = NFS_FH(src_inode), 996e5341f3aSPeng Tao .dst_fh = NFS_FH(dst_inode), 997e5341f3aSPeng Tao .src_offset = src_offset, 998e5341f3aSPeng Tao .dst_offset = dst_offset, 9999494b2ceSChristoph Hellwig .count = count, 1000e5341f3aSPeng Tao .dst_bitmask = server->cache_consistency_bitmask, 1001e5341f3aSPeng Tao }; 1002e5341f3aSPeng Tao struct nfs42_clone_res res = { 1003e5341f3aSPeng Tao .server = server, 1004e5341f3aSPeng Tao }; 1005e5341f3aSPeng Tao int status; 1006e5341f3aSPeng Tao 1007e5341f3aSPeng Tao msg->rpc_argp = &args; 1008e5341f3aSPeng Tao msg->rpc_resp = &res; 1009e5341f3aSPeng Tao 10104bdf87ebSChristoph Hellwig status = nfs4_set_rw_stateid(&args.src_stateid, src_lock->open_context, 10114bdf87ebSChristoph Hellwig src_lock, FMODE_READ); 1012d826e5b8SOlga Kornievskaia if (status) { 1013d826e5b8SOlga Kornievskaia if (status == -EAGAIN) 1014d826e5b8SOlga Kornievskaia status = -NFS4ERR_BAD_STATEID; 1015e5341f3aSPeng Tao return status; 1016d826e5b8SOlga Kornievskaia } 10174bdf87ebSChristoph Hellwig status = nfs4_set_rw_stateid(&args.dst_stateid, dst_lock->open_context, 10184bdf87ebSChristoph Hellwig dst_lock, FMODE_WRITE); 1019d826e5b8SOlga Kornievskaia if (status) { 1020d826e5b8SOlga Kornievskaia if (status == -EAGAIN) 1021d826e5b8SOlga Kornievskaia status = -NFS4ERR_BAD_STATEID; 1022e5341f3aSPeng Tao return status; 1023d826e5b8SOlga Kornievskaia } 1024e5341f3aSPeng Tao 1025e5341f3aSPeng Tao res.dst_fattr = nfs_alloc_fattr(); 1026e5341f3aSPeng Tao if (!res.dst_fattr) 1027e5341f3aSPeng Tao return -ENOMEM; 1028e5341f3aSPeng Tao 1029e5341f3aSPeng Tao status = nfs4_call_sync(server->client, server, msg, 1030e5341f3aSPeng Tao &args.seq_args, &res.seq_res, 0); 1031e5341f3aSPeng Tao if (status == 0) 1032e5341f3aSPeng Tao status = nfs_post_op_update_inode(dst_inode, res.dst_fattr); 1033e5341f3aSPeng Tao 1034e5341f3aSPeng Tao kfree(res.dst_fattr); 1035e5341f3aSPeng Tao return status; 1036e5341f3aSPeng Tao } 1037e5341f3aSPeng Tao 1038e5341f3aSPeng Tao int nfs42_proc_clone(struct file *src_f, struct file *dst_f, 1039e5341f3aSPeng Tao loff_t src_offset, loff_t dst_offset, loff_t count) 1040e5341f3aSPeng Tao { 1041e5341f3aSPeng Tao struct rpc_message msg = { 1042e5341f3aSPeng Tao .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLONE], 1043e5341f3aSPeng Tao }; 1044e5341f3aSPeng Tao struct inode *inode = file_inode(src_f); 1045e5341f3aSPeng Tao struct nfs_server *server = NFS_SERVER(file_inode(src_f)); 10464bdf87ebSChristoph Hellwig struct nfs_lock_context *src_lock; 10474bdf87ebSChristoph Hellwig struct nfs_lock_context *dst_lock; 10484bdf87ebSChristoph Hellwig struct nfs4_exception src_exception = { }; 10494bdf87ebSChristoph Hellwig struct nfs4_exception dst_exception = { }; 10504bdf87ebSChristoph Hellwig int err, err2; 1051e5341f3aSPeng Tao 1052e5341f3aSPeng Tao if (!nfs_server_capable(inode, NFS_CAP_CLONE)) 1053e5341f3aSPeng Tao return -EOPNOTSUPP; 1054e5341f3aSPeng Tao 10554bdf87ebSChristoph Hellwig src_lock = nfs_get_lock_context(nfs_file_open_context(src_f)); 10564bdf87ebSChristoph Hellwig if (IS_ERR(src_lock)) 10574bdf87ebSChristoph Hellwig return PTR_ERR(src_lock); 10584bdf87ebSChristoph Hellwig 10594bdf87ebSChristoph Hellwig src_exception.inode = file_inode(src_f); 10604bdf87ebSChristoph Hellwig src_exception.state = src_lock->open_context->state; 10614bdf87ebSChristoph Hellwig 10624bdf87ebSChristoph Hellwig dst_lock = nfs_get_lock_context(nfs_file_open_context(dst_f)); 10634bdf87ebSChristoph Hellwig if (IS_ERR(dst_lock)) { 10644bdf87ebSChristoph Hellwig err = PTR_ERR(dst_lock); 10654bdf87ebSChristoph Hellwig goto out_put_src_lock; 10664bdf87ebSChristoph Hellwig } 10674bdf87ebSChristoph Hellwig 10684bdf87ebSChristoph Hellwig dst_exception.inode = file_inode(dst_f); 10694bdf87ebSChristoph Hellwig dst_exception.state = dst_lock->open_context->state; 10704bdf87ebSChristoph Hellwig 1071e5341f3aSPeng Tao do { 10724bdf87ebSChristoph Hellwig err = _nfs42_proc_clone(&msg, src_f, dst_f, src_lock, dst_lock, 10734bdf87ebSChristoph Hellwig src_offset, dst_offset, count); 1074e5341f3aSPeng Tao if (err == -ENOTSUPP || err == -EOPNOTSUPP) { 1075e5341f3aSPeng Tao NFS_SERVER(inode)->caps &= ~NFS_CAP_CLONE; 10764bdf87ebSChristoph Hellwig err = -EOPNOTSUPP; 10774bdf87ebSChristoph Hellwig break; 1078e5341f3aSPeng Tao } 1079e5341f3aSPeng Tao 10804bdf87ebSChristoph Hellwig err2 = nfs4_handle_exception(server, err, &src_exception); 10814bdf87ebSChristoph Hellwig err = nfs4_handle_exception(server, err, &dst_exception); 10824bdf87ebSChristoph Hellwig if (!err) 10834bdf87ebSChristoph Hellwig err = err2; 10844bdf87ebSChristoph Hellwig } while (src_exception.retry || dst_exception.retry); 10854bdf87ebSChristoph Hellwig 10864bdf87ebSChristoph Hellwig nfs_put_lock_context(dst_lock); 10874bdf87ebSChristoph Hellwig out_put_src_lock: 10884bdf87ebSChristoph Hellwig nfs_put_lock_context(src_lock); 1089e5341f3aSPeng Tao return err; 1090e5341f3aSPeng Tao } 1091