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author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-10-13 21:28:20 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-10-13 21:28:20 -0700 |
commit | c4a86165d1ec70c8e592fa7b7cc7070971533021 (patch) | |
tree | 704b2071d0a90df92a9e08d3e6a219196c3f0116 /fs/nfs | |
parent | 2778556474b1996aa68ae61619386b8802733bd8 (diff) | |
parent | 3f807e5ae5597bd65a6fff684083e8eaa21f3fa7 (diff) | |
download | linux-stable-c4a86165d1ec70c8e592fa7b7cc7070971533021.tar.gz linux-stable-c4a86165d1ec70c8e592fa7b7cc7070971533021.tar.bz2 linux-stable-c4a86165d1ec70c8e592fa7b7cc7070971533021.zip |
Merge tag 'nfs-for-4.9-1' of git://git.linux-nfs.org/projects/anna/linux-nfs
Pull NFS client updates from Anna Schumaker:
"Highlights include:
Stable bugfixes:
- sunrpc: fix writ espace race causing stalls
- NFS: Fix inode corruption in nfs_prime_dcache()
- NFSv4: Don't report revoked delegations as valid in nfs_have_delegation()
- NFSv4: nfs4_copy_delegation_stateid() must fail if the delegation is invalid
- NFSv4: Open state recovery must account for file permission changes
- NFSv4.2: Fix a reference leak in nfs42_proc_layoutstats_generic
Features:
- Add support for tracking multiple layout types with an ordered list
- Add support for using multiple backchannel threads on the client
- Add support for pNFS file layout session trunking
- Delay xprtrdma use of DMA API (for device driver removal)
- Add support for xprtrdma remote invalidation
- Add support for larger xprtrdma inline thresholds
- Use a scatter/gather list for sending xprtrdma RPC calls
- Add support for the CB_NOTIFY_LOCK callback
- Improve hashing sunrpc auth_creds by using both uid and gid
Bugfixes:
- Fix xprtrdma use of DMA API
- Validate filenames before adding to the dcache
- Fix corruption of xdr->nwords in xdr_copy_to_scratch
- Fix setting buffer length in xdr_set_next_buffer()
- Don't deadlock the state manager on the SEQUENCE status flags
- Various delegation and stateid related fixes
- Retry operations if an interrupted slot receives EREMOTEIO
- Make nfs boot time y2038 safe"
* tag 'nfs-for-4.9-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (100 commits)
NFSv4.2: Fix a reference leak in nfs42_proc_layoutstats_generic
fs: nfs: Make nfs boot time y2038 safe
sunrpc: replace generic auth_cred hash with auth-specific function
sunrpc: add RPCSEC_GSS hash_cred() function
sunrpc: add auth_unix hash_cred() function
sunrpc: add generic_auth hash_cred() function
sunrpc: add hash_cred() function to rpc_authops struct
Retry operation on EREMOTEIO on an interrupted slot
pNFS: Fix atime updates on pNFS clients
sunrpc: queue work on system_power_efficient_wq
NFSv4.1: Even if the stateid is OK, we may need to recover the open modes
NFSv4: If recovery failed for a specific open stateid, then don't retry
NFSv4: Fix retry issues with nfs41_test/free_stateid
NFSv4: Open state recovery must account for file permission changes
NFSv4: Mark the lock and open stateids as invalid after freeing them
NFSv4: Don't test open_stateid unless it is set
NFSv4: nfs4_do_handle_exception() handle revoke/expiry of a single stateid
NFS: Always call nfs_inode_find_state_and_recover() when revoking a delegation
NFSv4: Fix a race when updating an open_stateid
NFSv4: Fix a race in nfs_inode_reclaim_delegation()
...
Diffstat (limited to 'fs/nfs')
-rw-r--r-- | fs/nfs/cache_lib.c | 2 | ||||
-rw-r--r-- | fs/nfs/callback.c | 136 | ||||
-rw-r--r-- | fs/nfs/callback.h | 12 | ||||
-rw-r--r-- | fs/nfs/callback_proc.c | 16 | ||||
-rw-r--r-- | fs/nfs/callback_xdr.c | 53 | ||||
-rw-r--r-- | fs/nfs/client.c | 10 | ||||
-rw-r--r-- | fs/nfs/delegation.c | 213 | ||||
-rw-r--r-- | fs/nfs/delegation.h | 8 | ||||
-rw-r--r-- | fs/nfs/dir.c | 24 | ||||
-rw-r--r-- | fs/nfs/direct.c | 2 | ||||
-rw-r--r-- | fs/nfs/file.c | 11 | ||||
-rw-r--r-- | fs/nfs/flexfilelayout/flexfilelayout.c | 2 | ||||
-rw-r--r-- | fs/nfs/internal.h | 7 | ||||
-rw-r--r-- | fs/nfs/netns.h | 2 | ||||
-rw-r--r-- | fs/nfs/nfs42proc.c | 1 | ||||
-rw-r--r-- | fs/nfs/nfs4_fs.h | 15 | ||||
-rw-r--r-- | fs/nfs/nfs4client.c | 118 | ||||
-rw-r--r-- | fs/nfs/nfs4proc.c | 901 | ||||
-rw-r--r-- | fs/nfs/nfs4session.h | 2 | ||||
-rw-r--r-- | fs/nfs/nfs4state.c | 84 | ||||
-rw-r--r-- | fs/nfs/nfs4xdr.c | 42 | ||||
-rw-r--r-- | fs/nfs/pnfs.c | 73 | ||||
-rw-r--r-- | fs/nfs/pnfs.h | 5 | ||||
-rw-r--r-- | fs/nfs/pnfs_nfs.c | 58 | ||||
-rw-r--r-- | fs/nfs/super.c | 10 |
25 files changed, 1331 insertions, 476 deletions
diff --git a/fs/nfs/cache_lib.c b/fs/nfs/cache_lib.c index 5f7b053720ee..6de15709d024 100644 --- a/fs/nfs/cache_lib.c +++ b/fs/nfs/cache_lib.c @@ -76,7 +76,7 @@ static void nfs_dns_cache_revisit(struct cache_deferred_req *d, int toomany) dreq = container_of(d, struct nfs_cache_defer_req, deferred_req); - complete_all(&dreq->completion); + complete(&dreq->completion); nfs_cache_defer_req_put(dreq); } diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c index 52a28311e2a4..532d8e242d4d 100644 --- a/fs/nfs/callback.c +++ b/fs/nfs/callback.c @@ -31,8 +31,6 @@ struct nfs_callback_data { unsigned int users; struct svc_serv *serv; - struct svc_rqst *rqst; - struct task_struct *task; }; static struct nfs_callback_data nfs_callback_info[NFS4_MAX_MINOR_VERSION + 1]; @@ -89,15 +87,6 @@ nfs4_callback_svc(void *vrqstp) return 0; } -/* - * Prepare to bring up the NFSv4 callback service - */ -static struct svc_rqst * -nfs4_callback_up(struct svc_serv *serv) -{ - return svc_prepare_thread(serv, &serv->sv_pools[0], NUMA_NO_NODE); -} - #if defined(CONFIG_NFS_V4_1) /* * The callback service for NFSv4.1 callbacks @@ -139,29 +128,6 @@ nfs41_callback_svc(void *vrqstp) return 0; } -/* - * Bring up the NFSv4.1 callback service - */ -static struct svc_rqst * -nfs41_callback_up(struct svc_serv *serv) -{ - struct svc_rqst *rqstp; - - INIT_LIST_HEAD(&serv->sv_cb_list); - spin_lock_init(&serv->sv_cb_lock); - init_waitqueue_head(&serv->sv_cb_waitq); - rqstp = svc_prepare_thread(serv, &serv->sv_pools[0], NUMA_NO_NODE); - dprintk("--> %s return %d\n", __func__, PTR_ERR_OR_ZERO(rqstp)); - return rqstp; -} - -static void nfs_minorversion_callback_svc_setup(struct svc_serv *serv, - struct svc_rqst **rqstpp, int (**callback_svc)(void *vrqstp)) -{ - *rqstpp = nfs41_callback_up(serv); - *callback_svc = nfs41_callback_svc; -} - static inline void nfs_callback_bc_serv(u32 minorversion, struct rpc_xprt *xprt, struct svc_serv *serv) { @@ -173,13 +139,6 @@ static inline void nfs_callback_bc_serv(u32 minorversion, struct rpc_xprt *xprt, xprt->bc_serv = serv; } #else -static void nfs_minorversion_callback_svc_setup(struct svc_serv *serv, - struct svc_rqst **rqstpp, int (**callback_svc)(void *vrqstp)) -{ - *rqstpp = ERR_PTR(-ENOTSUPP); - *callback_svc = ERR_PTR(-ENOTSUPP); -} - static inline void nfs_callback_bc_serv(u32 minorversion, struct rpc_xprt *xprt, struct svc_serv *serv) { @@ -189,45 +148,22 @@ static inline void nfs_callback_bc_serv(u32 minorversion, struct rpc_xprt *xprt, static int nfs_callback_start_svc(int minorversion, struct rpc_xprt *xprt, struct svc_serv *serv) { - struct svc_rqst *rqstp; - int (*callback_svc)(void *vrqstp); - struct nfs_callback_data *cb_info = &nfs_callback_info[minorversion]; + int nrservs = nfs_callback_nr_threads; int ret; nfs_callback_bc_serv(minorversion, xprt, serv); - if (cb_info->task) - return 0; + if (nrservs < NFS4_MIN_NR_CALLBACK_THREADS) + nrservs = NFS4_MIN_NR_CALLBACK_THREADS; - switch (minorversion) { - case 0: - /* v4.0 callback setup */ - rqstp = nfs4_callback_up(serv); - callback_svc = nfs4_callback_svc; - break; - default: - nfs_minorversion_callback_svc_setup(serv, - &rqstp, &callback_svc); - } - - if (IS_ERR(rqstp)) - return PTR_ERR(rqstp); - - svc_sock_update_bufs(serv); + if (serv->sv_nrthreads-1 == nrservs) + return 0; - cb_info->serv = serv; - cb_info->rqst = rqstp; - cb_info->task = kthread_create(callback_svc, cb_info->rqst, - "nfsv4.%u-svc", minorversion); - if (IS_ERR(cb_info->task)) { - ret = PTR_ERR(cb_info->task); - svc_exit_thread(cb_info->rqst); - cb_info->rqst = NULL; - cb_info->task = NULL; + ret = serv->sv_ops->svo_setup(serv, NULL, nrservs); + if (ret) { + serv->sv_ops->svo_setup(serv, NULL, 0); return ret; } - rqstp->rq_task = cb_info->task; - wake_up_process(cb_info->task); dprintk("nfs_callback_up: service started\n"); return 0; } @@ -281,19 +217,41 @@ err_bind: return ret; } -static struct svc_serv_ops nfs_cb_sv_ops = { +static struct svc_serv_ops nfs40_cb_sv_ops = { + .svo_function = nfs4_callback_svc, .svo_enqueue_xprt = svc_xprt_do_enqueue, + .svo_setup = svc_set_num_threads, + .svo_module = THIS_MODULE, +}; +#if defined(CONFIG_NFS_V4_1) +static struct svc_serv_ops nfs41_cb_sv_ops = { + .svo_function = nfs41_callback_svc, + .svo_enqueue_xprt = svc_xprt_do_enqueue, + .svo_setup = svc_set_num_threads, + .svo_module = THIS_MODULE, +}; + +struct svc_serv_ops *nfs4_cb_sv_ops[] = { + [0] = &nfs40_cb_sv_ops, + [1] = &nfs41_cb_sv_ops, +}; +#else +struct svc_serv_ops *nfs4_cb_sv_ops[] = { + [0] = &nfs40_cb_sv_ops, + [1] = NULL, }; +#endif static struct svc_serv *nfs_callback_create_svc(int minorversion) { struct nfs_callback_data *cb_info = &nfs_callback_info[minorversion]; struct svc_serv *serv; + struct svc_serv_ops *sv_ops; /* * Check whether we're already up and running. */ - if (cb_info->task) { + if (cb_info->serv) { /* * Note: increase service usage, because later in case of error * svc_destroy() will be called. @@ -302,6 +260,17 @@ static struct svc_serv *nfs_callback_create_svc(int minorversion) return cb_info->serv; } + switch (minorversion) { + case 0: + sv_ops = nfs4_cb_sv_ops[0]; + break; + default: + sv_ops = nfs4_cb_sv_ops[1]; + } + + if (sv_ops == NULL) + return ERR_PTR(-ENOTSUPP); + /* * Sanity check: if there's no task, * we should be the first user ... @@ -310,11 +279,12 @@ static struct svc_serv *nfs_callback_create_svc(int minorversion) printk(KERN_WARNING "nfs_callback_create_svc: no kthread, %d users??\n", cb_info->users); - serv = svc_create(&nfs4_callback_program, NFS4_CALLBACK_BUFSIZE, &nfs_cb_sv_ops); + serv = svc_create(&nfs4_callback_program, NFS4_CALLBACK_BUFSIZE, sv_ops); if (!serv) { printk(KERN_ERR "nfs_callback_create_svc: create service failed\n"); return ERR_PTR(-ENOMEM); } + cb_info->serv = serv; /* As there is only one thread we need to over-ride the * default maximum of 80 connections */ @@ -357,6 +327,8 @@ int nfs_callback_up(u32 minorversion, struct rpc_xprt *xprt) * thread exits. */ err_net: + if (!cb_info->users) + cb_info->serv = NULL; svc_destroy(serv); err_create: mutex_unlock(&nfs_callback_mutex); @@ -374,18 +346,18 @@ err_start: void nfs_callback_down(int minorversion, struct net *net) { struct nfs_callback_data *cb_info = &nfs_callback_info[minorversion]; + struct svc_serv *serv; mutex_lock(&nfs_callback_mutex); - nfs_callback_down_net(minorversion, cb_info->serv, net); + serv = cb_info->serv; + nfs_callback_down_net(minorversion, serv, net); cb_info->users--; - if (cb_info->users == 0 && cb_info->task != NULL) { - kthread_stop(cb_info->task); - dprintk("nfs_callback_down: service stopped\n"); - svc_exit_thread(cb_info->rqst); + if (cb_info->users == 0) { + svc_get(serv); + serv->sv_ops->svo_setup(serv, NULL, 0); + svc_destroy(serv); dprintk("nfs_callback_down: service destroyed\n"); cb_info->serv = NULL; - cb_info->rqst = NULL; - cb_info->task = NULL; } mutex_unlock(&nfs_callback_mutex); } diff --git a/fs/nfs/callback.h b/fs/nfs/callback.h index 5fe1cecbf9f0..c701c308fac5 100644 --- a/fs/nfs/callback.h +++ b/fs/nfs/callback.h @@ -179,6 +179,15 @@ extern __be32 nfs4_callback_devicenotify( struct cb_devicenotifyargs *args, void *dummy, struct cb_process_state *cps); +struct cb_notify_lock_args { + struct nfs_fh cbnl_fh; + struct nfs_lowner cbnl_owner; + bool cbnl_valid; +}; + +extern __be32 nfs4_callback_notify_lock(struct cb_notify_lock_args *args, + void *dummy, + struct cb_process_state *cps); #endif /* CONFIG_NFS_V4_1 */ extern int check_gss_callback_principal(struct nfs_client *, struct svc_rqst *); extern __be32 nfs4_callback_getattr(struct cb_getattrargs *args, @@ -198,6 +207,9 @@ extern void nfs_callback_down(int minorversion, struct net *net); #define NFS41_BC_MIN_CALLBACKS 1 #define NFS41_BC_MAX_CALLBACKS 1 +#define NFS4_MIN_NR_CALLBACK_THREADS 1 + extern unsigned int nfs_callback_set_tcpport; +extern unsigned short nfs_callback_nr_threads; #endif /* __LINUX_FS_NFS_CALLBACK_H */ diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c index f953ef6b2f2e..e9aa235e9d10 100644 --- a/fs/nfs/callback_proc.c +++ b/fs/nfs/callback_proc.c @@ -628,4 +628,20 @@ out: dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); return status; } + +__be32 nfs4_callback_notify_lock(struct cb_notify_lock_args *args, void *dummy, + struct cb_process_state *cps) +{ + if (!cps->clp) /* set in cb_sequence */ + return htonl(NFS4ERR_OP_NOT_IN_SESSION); + + dprintk_rcu("NFS: CB_NOTIFY_LOCK request from %s\n", + rpc_peeraddr2str(cps->clp->cl_rpcclient, RPC_DISPLAY_ADDR)); + + /* Don't wake anybody if the string looked bogus */ + if (args->cbnl_valid) + __wake_up(&cps->clp->cl_lock_waitq, TASK_NORMAL, 0, args); + + return htonl(NFS4_OK); +} #endif /* CONFIG_NFS_V4_1 */ diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c index 656f68f7fe53..eb094c6011d8 100644 --- a/fs/nfs/callback_xdr.c +++ b/fs/nfs/callback_xdr.c @@ -35,6 +35,7 @@ (1 + 3) * 4) // seqid, 3 slotids #define CB_OP_RECALLANY_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) #define CB_OP_RECALLSLOT_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) +#define CB_OP_NOTIFY_LOCK_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) #endif /* CONFIG_NFS_V4_1 */ #define NFSDBG_FACILITY NFSDBG_CALLBACK @@ -72,7 +73,7 @@ static int nfs4_encode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy) return xdr_ressize_check(rqstp, p); } -static __be32 *read_buf(struct xdr_stream *xdr, int nbytes) +static __be32 *read_buf(struct xdr_stream *xdr, size_t nbytes) { __be32 *p; @@ -534,6 +535,49 @@ static __be32 decode_recallslot_args(struct svc_rqst *rqstp, return 0; } +static __be32 decode_lockowner(struct xdr_stream *xdr, struct cb_notify_lock_args *args) +{ + __be32 *p; + unsigned int len; + + p = read_buf(xdr, 12); + if (unlikely(p == NULL)) + return htonl(NFS4ERR_BADXDR); + + p = xdr_decode_hyper(p, &args->cbnl_owner.clientid); + len = be32_to_cpu(*p); + + p = read_buf(xdr, len); + if (unlikely(p == NULL)) + return htonl(NFS4ERR_BADXDR); + + /* Only try to decode if the length is right */ + if (len == 20) { + p += 2; /* skip "lock id:" */ + args->cbnl_owner.s_dev = be32_to_cpu(*p++); + xdr_decode_hyper(p, &args->cbnl_owner.id); + args->cbnl_valid = true; + } else { + args->cbnl_owner.s_dev = 0; + args->cbnl_owner.id = 0; + args->cbnl_valid = false; + } + return 0; +} + +static __be32 decode_notify_lock_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, struct cb_notify_lock_args *args) +{ + __be32 status; + + status = decode_fh(xdr, &args->cbnl_fh); + if (unlikely(status != 0)) + goto out; + status = decode_lockowner(xdr, args); +out: + dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); + return status; +} + #endif /* CONFIG_NFS_V4_1 */ static __be32 encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) @@ -746,6 +790,7 @@ preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op) case OP_CB_RECALL_SLOT: case OP_CB_LAYOUTRECALL: case OP_CB_NOTIFY_DEVICEID: + case OP_CB_NOTIFY_LOCK: *op = &callback_ops[op_nr]; break; @@ -753,7 +798,6 @@ preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op) case OP_CB_PUSH_DELEG: case OP_CB_RECALLABLE_OBJ_AVAIL: case OP_CB_WANTS_CANCELLED: - case OP_CB_NOTIFY_LOCK: return htonl(NFS4ERR_NOTSUPP); default: @@ -1006,6 +1050,11 @@ static struct callback_op callback_ops[] = { .decode_args = (callback_decode_arg_t)decode_recallslot_args, .res_maxsize = CB_OP_RECALLSLOT_RES_MAXSZ, }, + [OP_CB_NOTIFY_LOCK] = { + .process_op = (callback_process_op_t)nfs4_callback_notify_lock, + .decode_args = (callback_decode_arg_t)decode_notify_lock_args, + .res_maxsize = CB_OP_NOTIFY_LOCK_RES_MAXSZ, + }, #endif /* CONFIG_NFS_V4_1 */ }; diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 1e106780a237..7555ba889d1f 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -313,7 +313,10 @@ static struct nfs_client *nfs_match_client(const struct nfs_client_initdata *dat continue; /* Match the full socket address */ if (!rpc_cmp_addr_port(sap, clap)) - continue; + /* Match all xprt_switch full socket addresses */ + if (!rpc_clnt_xprt_switch_has_addr(clp->cl_rpcclient, + sap)) + continue; atomic_inc(&clp->cl_count); return clp; @@ -785,7 +788,8 @@ int nfs_probe_fsinfo(struct nfs_server *server, struct nfs_fh *mntfh, struct nfs } fsinfo.fattr = fattr; - fsinfo.layouttype = 0; + fsinfo.nlayouttypes = 0; + memset(fsinfo.layouttype, 0, sizeof(fsinfo.layouttype)); error = clp->rpc_ops->fsinfo(server, mntfh, &fsinfo); if (error < 0) goto out_error; @@ -1078,7 +1082,7 @@ void nfs_clients_init(struct net *net) idr_init(&nn->cb_ident_idr); #endif spin_lock_init(&nn->nfs_client_lock); - nn->boot_time = CURRENT_TIME; + nn->boot_time = ktime_get_real(); } #ifdef CONFIG_PROC_FS diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index 322c2585bc34..dff600ae0d74 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -41,6 +41,17 @@ void nfs_mark_delegation_referenced(struct nfs_delegation *delegation) set_bit(NFS_DELEGATION_REFERENCED, &delegation->flags); } +static bool +nfs4_is_valid_delegation(const struct nfs_delegation *delegation, + fmode_t flags) +{ + if (delegation != NULL && (delegation->type & flags) == flags && + !test_bit(NFS_DELEGATION_REVOKED, &delegation->flags) && + !test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) + return true; + return false; +} + static int nfs4_do_check_delegation(struct inode *inode, fmode_t flags, bool mark) { @@ -50,8 +61,7 @@ nfs4_do_check_delegation(struct inode *inode, fmode_t flags, bool mark) flags &= FMODE_READ|FMODE_WRITE; rcu_read_lock(); delegation = rcu_dereference(NFS_I(inode)->delegation); - if (delegation != NULL && (delegation->type & flags) == flags && - !test_bit(NFS_DELEGATION_RETURNING, &delegation->flags)) { + if (nfs4_is_valid_delegation(delegation, flags)) { if (mark) nfs_mark_delegation_referenced(delegation); ret = 1; @@ -185,15 +195,13 @@ void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, rcu_read_unlock(); put_rpccred(oldcred); trace_nfs4_reclaim_delegation(inode, res->delegation_type); - } else { - /* We appear to have raced with a delegation return. */ - spin_unlock(&delegation->lock); - rcu_read_unlock(); - nfs_inode_set_delegation(inode, cred, res); + return; } - } else { - rcu_read_unlock(); + /* We appear to have raced with a delegation return. */ + spin_unlock(&delegation->lock); } + rcu_read_unlock(); + nfs_inode_set_delegation(inode, cred, res); } static int nfs_do_return_delegation(struct inode *inode, struct nfs_delegation *delegation, int issync) @@ -642,28 +650,49 @@ static void nfs_client_mark_return_unused_delegation_types(struct nfs_client *cl rcu_read_unlock(); } -static void nfs_revoke_delegation(struct inode *inode) +static void nfs_mark_delegation_revoked(struct nfs_server *server, + struct nfs_delegation *delegation) +{ + set_bit(NFS_DELEGATION_REVOKED, &delegation->flags); + delegation->stateid.type = NFS4_INVALID_STATEID_TYPE; + nfs_mark_return_delegation(server, delegation); +} + +static bool nfs_revoke_delegation(struct inode *inode, + const nfs4_stateid *stateid) { struct nfs_delegation *delegation; + nfs4_stateid tmp; + bool ret = false; + rcu_read_lock(); delegation = rcu_dereference(NFS_I(inode)->delegation); - if (delegation != NULL) { - set_bit(NFS_DELEGATION_REVOKED, &delegation->flags); - nfs_mark_return_delegation(NFS_SERVER(inode), delegation); - } + if (delegation == NULL) + goto out; + if (stateid == NULL) { + nfs4_stateid_copy(&tmp, &delegation->stateid); + stateid = &tmp; + } else if (!nfs4_stateid_match(stateid, &delegation->stateid)) + goto out; + nfs_mark_delegation_revoked(NFS_SERVER(inode), delegation); + ret = true; +out: rcu_read_unlock(); + if (ret) + nfs_inode_find_state_and_recover(inode, stateid); + return ret; } -void nfs_remove_bad_delegation(struct inode *inode) +void nfs_remove_bad_delegation(struct inode *inode, + const nfs4_stateid *stateid) { struct nfs_delegation *delegation; - nfs_revoke_delegation(inode); + if (!nfs_revoke_delegation(inode, stateid)) + return; delegation = nfs_inode_detach_delegation(inode); - if (delegation) { - nfs_inode_find_state_and_recover(inode, &delegation->stateid); + if (delegation) nfs_free_delegation(delegation); - } } EXPORT_SYMBOL_GPL(nfs_remove_bad_delegation); @@ -786,8 +815,15 @@ static void nfs_delegation_mark_reclaim_server(struct nfs_server *server) { struct nfs_delegation *delegation; - list_for_each_entry_rcu(delegation, &server->delegations, super_list) + list_for_each_entry_rcu(delegation, &server->delegations, super_list) { + /* + * If the delegation may have been admin revoked, then we + * cannot reclaim it. + */ + if (test_bit(NFS_DELEGATION_TEST_EXPIRED, &delegation->flags)) + continue; set_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags); + } } /** @@ -851,6 +887,141 @@ restart: rcu_read_unlock(); } +static inline bool nfs4_server_rebooted(const struct nfs_client *clp) +{ + return (clp->cl_state & (BIT(NFS4CLNT_CHECK_LEASE) | + BIT(NFS4CLNT_LEASE_EXPIRED) | + BIT(NFS4CLNT_SESSION_RESET))) != 0; +} + +static void nfs_mark_test_expired_delegation(struct nfs_server *server, + struct nfs_delegation *delegation) +{ + if (delegation->stateid.type == NFS4_INVALID_STATEID_TYPE) + return; + clear_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags); + set_bit(NFS_DELEGATION_TEST_EXPIRED, &delegation->flags); + set_bit(NFS4CLNT_DELEGATION_EXPIRED, &server->nfs_client->cl_state); +} + +static void nfs_inode_mark_test_expired_delegation(struct nfs_server *server, + struct inode *inode) +{ + struct nfs_delegation *delegation; + + rcu_read_lock(); + delegation = rcu_dereference(NFS_I(inode)->delegation); + if (delegation) + nfs_mark_test_expired_delegation(server, delegation); + rcu_read_unlock(); + +} + +static void nfs_delegation_mark_test_expired_server(struct nfs_server *server) +{ + struct nfs_delegation *delegation; + + list_for_each_entry_rcu(delegation, &server->delegations, super_list) + nfs_mark_test_expired_delegation(server, delegation); +} + +/** + * nfs_mark_test_expired_all_delegations - mark all delegations for testing + * @clp: nfs_client to process + * + * Iterates through all the delegations associated with this server and + * marks them as needing to be checked for validity. + */ +void nfs_mark_test_expired_all_delegations(struct nfs_client *clp) +{ + struct nfs_server *server; + + rcu_read_lock(); + list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) + nfs_delegation_mark_test_expired_server(server); + rcu_read_unlock(); +} + +/** + * nfs_reap_expired_delegations - reap expired delegations + * @clp: nfs_client to process + * + * Iterates through all the delegations associated with this server and + * checks if they have may have been revoked. This function is usually + * expected to be called in cases where the server may have lost its + * lease. + */ +void nfs_reap_expired_delegations(struct nfs_client *clp) +{ + const struct nfs4_minor_version_ops *ops = clp->cl_mvops; + struct nfs_delegation *delegation; + struct nfs_server *server; + struct inode *inode; + struct rpc_cred *cred; + nfs4_stateid stateid; + +restart: + rcu_read_lock(); + list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) { + list_for_each_entry_rcu(delegation, &server->delegations, + super_list) { + if (test_bit(NFS_DELEGATION_RETURNING, + &delegation->flags)) + continue; + if (test_bit(NFS_DELEGATION_TEST_EXPIRED, + &delegation->flags) == 0) + continue; + if (!nfs_sb_active(server->super)) + continue; + inode = nfs_delegation_grab_inode(delegation); + if (inode == NULL) { + rcu_read_unlock(); + nfs_sb_deactive(server->super); + goto restart; + } + cred = get_rpccred_rcu(delegation->cred); + nfs4_stateid_copy(&stateid, &delegation->stateid); + clear_bit(NFS_DELEGATION_TEST_EXPIRED, &delegation->flags); + rcu_read_unlock(); + if (cred != NULL && + ops->test_and_free_expired(server, &stateid, cred) < 0) { + nfs_revoke_delegation(inode, &stateid); + nfs_inode_find_state_and_recover(inode, &stateid); + } + put_rpccred(cred); + if (nfs4_server_rebooted(clp)) { + nfs_inode_mark_test_expired_delegation(server,inode); + iput(inode); + nfs_sb_deactive(server->super); + return; + } + iput(inode); + nfs_sb_deactive(server->super); + goto restart; + } + } + rcu_read_unlock(); +} + +void nfs_inode_find_delegation_state_and_recover(struct inode *inode, + const nfs4_stateid *stateid) +{ + struct nfs_client *clp = NFS_SERVER(inode)->nfs_client; + struct nfs_delegation *delegation; + bool found = false; + + rcu_read_lock(); + delegation = rcu_dereference(NFS_I(inode)->delegation); + if (delegation && + nfs4_stateid_match_other(&delegation->stateid, stateid)) { + nfs_mark_test_expired_delegation(NFS_SERVER(inode), delegation); + found = true; + } + rcu_read_unlock(); + if (found) + nfs4_schedule_state_manager(clp); +} + /** * nfs_delegations_present - check for existence of delegations * @clp: client state handle @@ -893,7 +1064,7 @@ bool nfs4_copy_delegation_stateid(struct inode *inode, fmode_t flags, flags &= FMODE_READ|FMODE_WRITE; rcu_read_lock(); delegation = rcu_dereference(nfsi->delegation); - ret = (delegation != NULL && (delegation->type & flags) == flags); + ret = nfs4_is_valid_delegation(delegation, flags); if (ret) { nfs4_stateid_copy(dst, &delegation->stateid); nfs_mark_delegation_referenced(delegation); diff --git a/fs/nfs/delegation.h b/fs/nfs/delegation.h index 64724d252a79..e9d555796873 100644 --- a/fs/nfs/delegation.h +++ b/fs/nfs/delegation.h @@ -32,6 +32,7 @@ enum { NFS_DELEGATION_REFERENCED, NFS_DELEGATION_RETURNING, NFS_DELEGATION_REVOKED, + NFS_DELEGATION_TEST_EXPIRED, }; int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res); @@ -47,11 +48,14 @@ void nfs_expire_unused_delegation_types(struct nfs_client *clp, fmode_t flags); void nfs_expire_unreferenced_delegations(struct nfs_client *clp); int nfs_client_return_marked_delegations(struct nfs_client *clp); int nfs_delegations_present(struct nfs_client *clp); -void nfs_remove_bad_delegation(struct inode *inode); +void nfs_remove_bad_delegation(struct inode *inode, const nfs4_stateid *stateid); void nfs_delegation_mark_reclaim(struct nfs_client *clp); void nfs_delegation_reap_unclaimed(struct nfs_client *clp); +void nfs_mark_test_expired_all_delegations(struct nfs_client *clp); +void nfs_reap_expired_delegations(struct nfs_client *clp); + /* NFSv4 delegation-related procedures */ int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync); int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid, fmode_t type); @@ -62,6 +66,8 @@ void nfs_mark_delegation_referenced(struct nfs_delegation *delegation); int nfs4_have_delegation(struct inode *inode, fmode_t flags); int nfs4_check_delegation(struct inode *inode, fmode_t flags); bool nfs4_delegation_flush_on_close(const struct inode *inode); +void nfs_inode_find_delegation_state_and_recover(struct inode *inode, + const nfs4_stateid *stateid); #endif diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 06e0bf092ba9..5f1af4cd1a33 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -435,11 +435,11 @@ int nfs_same_file(struct dentry *dentry, struct nfs_entry *entry) return 0; nfsi = NFS_I(inode); - if (entry->fattr->fileid == nfsi->fileid) - return 1; - if (nfs_compare_fh(entry->fh, &nfsi->fh) == 0) - return 1; - return 0; + if (entry->fattr->fileid != nfsi->fileid) + return 0; + if (entry->fh->size && nfs_compare_fh(entry->fh, &nfsi->fh) != 0) + return 0; + return 1; } static @@ -496,6 +496,14 @@ void nfs_prime_dcache(struct dentry *parent, struct nfs_entry *entry) return; if (!(entry->fattr->valid & NFS_ATTR_FATTR_FSID)) return; + if (filename.len == 0) + return; + /* Validate that the name doesn't contain any illegal '\0' */ + if (strnlen(filename.name, filename.len) != filename.len) + return; + /* ...or '/' */ + if (strnchr(filename.name, filename.len, '/')) + return; if (filename.name[0] == '.') { if (filename.len == 1) return; @@ -517,6 +525,8 @@ again: &entry->fattr->fsid)) goto out; if (nfs_same_file(dentry, entry)) { + if (!entry->fh->size) + goto out; nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); status = nfs_refresh_inode(d_inode(dentry), entry->fattr); if (!status) @@ -529,6 +539,10 @@ again: goto again; } } + if (!entry->fh->size) { + d_lookup_done(dentry); + goto out; + } inode = nfs_fhget(dentry->d_sb, entry->fh, entry->fattr, entry->label); alias = d_splice_alias(inode, dentry); diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 72b7d13ee3c6..bd81bcf3ffcf 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -387,7 +387,7 @@ static void nfs_direct_complete(struct nfs_direct_req *dreq) dreq->iocb->ki_complete(dreq->iocb, res, 0); } - complete_all(&dreq->completion); + complete(&dreq->completion); nfs_direct_req_release(dreq); } diff --git a/fs/nfs/file.c b/fs/nfs/file.c index 2efbdde36c3e..9ea85ae23c32 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -520,7 +520,9 @@ const struct address_space_operations nfs_file_aops = { .invalidatepage = nfs_invalidate_page, .releasepage = nfs_release_page, .direct_IO = nfs_direct_IO, +#ifdef CONFIG_MIGRATION .migratepage = nfs_migrate_page, +#endif .launder_page = nfs_launder_page, .is_dirty_writeback = nfs_check_dirty_writeback, .error_remove_page = generic_error_remove_page, @@ -685,11 +687,6 @@ out_noconflict: goto out; } -static int do_vfs_lock(struct file *file, struct file_lock *fl) -{ - return locks_lock_file_wait(file, fl); -} - static int do_unlk(struct file *filp, int cmd, struct file_lock *fl, int is_local) { @@ -722,7 +719,7 @@ do_unlk(struct file *filp, int cmd, struct file_lock *fl, int is_local) if (!is_local) status = NFS_PROTO(inode)->lock(filp, cmd, fl); else - status = do_vfs_lock(filp, fl); + status = locks_lock_file_wait(filp, fl); return status; } @@ -747,7 +744,7 @@ do_setlk(struct file *filp, int cmd, struct file_lock *fl, int is_local) if (!is_local) status = NFS_PROTO(inode)->lock(filp, cmd, fl); else - status = do_vfs_lock(filp, fl); + status = locks_lock_file_wait(filp, fl); if (status < 0) goto out; diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c index 51b51369704c..98ace127bf86 100644 --- a/fs/nfs/flexfilelayout/flexfilelayout.c +++ b/fs/nfs/flexfilelayout/flexfilelayout.c @@ -1080,7 +1080,7 @@ static int ff_layout_async_handle_error_v4(struct rpc_task *task, case -NFS4ERR_BAD_STATEID: if (state == NULL) break; - nfs_remove_bad_delegation(state->inode); + nfs_remove_bad_delegation(state->inode, NULL); case -NFS4ERR_OPENMODE: if (state == NULL) break; diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index a6acce663219..80bcc0befb07 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -534,12 +534,9 @@ void nfs_clear_pnfs_ds_commit_verifiers(struct pnfs_ds_commit_info *cinfo) } #endif - #ifdef CONFIG_MIGRATION extern int nfs_migrate_page(struct address_space *, struct page *, struct page *, enum migrate_mode); -#else -#define nfs_migrate_page NULL #endif static inline int @@ -562,7 +559,6 @@ void nfs_init_cinfo_from_dreq(struct nfs_commit_info *cinfo, extern ssize_t nfs_dreq_bytes_left(struct nfs_direct_req *dreq); /* nfs4proc.c */ -extern void __nfs4_read_done_cb(struct nfs_pgio_header *); extern struct nfs_client *nfs4_init_client(struct nfs_client *clp, const struct nfs_client_initdata *); extern int nfs40_walk_client_list(struct nfs_client *clp, @@ -571,6 +567,9 @@ extern int nfs40_walk_client_list(struct nfs_client *clp, extern int nfs41_walk_client_list(struct nfs_client *clp, struct nfs_client **result, struct rpc_cred *cred); +extern int nfs4_test_session_trunk(struct rpc_clnt *, + struct rpc_xprt *, + void *); static inline struct inode *nfs_igrab_and_active(struct inode *inode) { diff --git a/fs/nfs/netns.h b/fs/nfs/netns.h index f0e06e4acbef..fbce0d885d4c 100644 --- a/fs/nfs/netns.h +++ b/fs/nfs/netns.h @@ -29,7 +29,7 @@ struct nfs_net { int cb_users[NFS4_MAX_MINOR_VERSION + 1]; #endif spinlock_t nfs_client_lock; - struct timespec boot_time; + ktime_t boot_time; #ifdef CONFIG_PROC_FS struct proc_dir_entry *proc_nfsfs; #endif diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c index 64b43b4ad9dd..608501971fe0 100644 --- a/fs/nfs/nfs42proc.c +++ b/fs/nfs/nfs42proc.c @@ -443,6 +443,7 @@ int nfs42_proc_layoutstats_generic(struct nfs_server *server, task = rpc_run_task(&task_setup); if (IS_ERR(task)) return PTR_ERR(task); + rpc_put_task(task); return 0; } diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 9bf64eacba5b..9b3a82abab07 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -39,6 +39,7 @@ enum nfs4_client_state { NFS4CLNT_BIND_CONN_TO_SESSION, NFS4CLNT_MOVED, NFS4CLNT_LEASE_MOVED, + NFS4CLNT_DELEGATION_EXPIRED, }; #define NFS4_RENEW_TIMEOUT 0x01 @@ -57,8 +58,11 @@ struct nfs4_minor_version_ops { struct nfs_fsinfo *); void (*free_lock_state)(struct nfs_server *, struct nfs4_lock_state *); + int (*test_and_free_expired)(struct nfs_server *, + nfs4_stateid *, struct rpc_cred *); struct nfs_seqid * (*alloc_seqid)(struct nfs_seqid_counter *, gfp_t); + int (*session_trunk)(struct rpc_clnt *, struct rpc_xprt *, void *); const struct rpc_call_ops *call_sync_ops; const struct nfs4_state_recovery_ops *reboot_recovery_ops; const struct nfs4_state_recovery_ops *nograce_recovery_ops; @@ -156,6 +160,7 @@ enum { NFS_STATE_RECLAIM_NOGRACE, /* OPEN stateid needs to recover state */ NFS_STATE_POSIX_LOCKS, /* Posix locks are supported */ NFS_STATE_RECOVERY_FAILED, /* OPEN stateid state recovery failed */ + NFS_STATE_MAY_NOTIFY_LOCK, /* server may CB_NOTIFY_LOCK */ }; struct nfs4_state { @@ -203,6 +208,11 @@ struct nfs4_state_recovery_ops { struct rpc_cred *); }; +struct nfs4_add_xprt_data { + struct nfs_client *clp; + struct rpc_cred *cred; +}; + struct nfs4_state_maintenance_ops { int (*sched_state_renewal)(struct nfs_client *, struct rpc_cred *, unsigned); struct rpc_cred * (*get_state_renewal_cred_locked)(struct nfs_client *); @@ -278,6 +288,8 @@ extern int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo); extern int nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync); +extern int nfs4_detect_session_trunking(struct nfs_client *clp, + struct nfs41_exchange_id_res *res, struct rpc_xprt *xprt); static inline bool is_ds_only_client(struct nfs_client *clp) @@ -439,7 +451,7 @@ extern void nfs4_schedule_path_down_recovery(struct nfs_client *clp); extern int nfs4_schedule_stateid_recovery(const struct nfs_server *, struct nfs4_state *); extern int nfs4_schedule_migration_recovery(const struct nfs_server *); extern void nfs4_schedule_lease_moved_recovery(struct nfs_client *); -extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags); +extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags, bool); extern void nfs41_handle_server_scope(struct nfs_client *, struct nfs41_server_scope **); extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp); @@ -471,6 +483,7 @@ extern struct nfs_subversion nfs_v4; struct dentry *nfs4_try_mount(int, const char *, struct nfs_mount_info *, struct nfs_subversion *); extern bool nfs4_disable_idmapping; extern unsigned short max_session_slots; +extern unsigned short max_session_cb_slots; extern unsigned short send_implementation_id; extern bool recover_lost_locks; diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c index cd3b7cfdde16..074ac7131459 100644 --- a/fs/nfs/nfs4client.c +++ b/fs/nfs/nfs4client.c @@ -199,6 +199,9 @@ struct nfs_client *nfs4_alloc_client(const struct nfs_client_initdata *cl_init) clp->cl_minorversion = cl_init->minorversion; clp->cl_mvops = nfs_v4_minor_ops[cl_init->minorversion]; clp->cl_mig_gen = 1; +#if IS_ENABLED(CONFIG_NFS_V4_1) + init_waitqueue_head(&clp->cl_lock_waitq); +#endif return clp; error: @@ -562,15 +565,15 @@ out: /* * Returns true if the client IDs match */ -static bool nfs4_match_clientids(struct nfs_client *a, struct nfs_client *b) +static bool nfs4_match_clientids(u64 a, u64 b) { - if (a->cl_clientid != b->cl_clientid) { + if (a != b) { dprintk("NFS: --> %s client ID %llx does not match %llx\n", - __func__, a->cl_clientid, b->cl_clientid); + __func__, a, b); return false; } dprintk("NFS: --> %s client ID %llx matches %llx\n", - __func__, a->cl_clientid, b->cl_clientid); + __func__, a, b); return true; } @@ -578,17 +581,15 @@ static bool nfs4_match_clientids(struct nfs_client *a, struct nfs_client *b) * Returns true if the server major ids match */ static bool -nfs4_check_clientid_trunking(struct nfs_client *a, struct nfs_client *b) +nfs4_check_serverowner_major_id(struct nfs41_server_owner *o1, + struct nfs41_server_owner *o2) { - struct nfs41_server_owner *o1 = a->cl_serverowner; - struct nfs41_server_owner *o2 = b->cl_serverowner; - if (o1->major_id_sz != o2->major_id_sz) goto out_major_mismatch; if (memcmp(o1->major_id, o2->major_id, o1->major_id_sz) != 0) goto out_major_mismatch; - dprintk("NFS: --> %s server owners match\n", __func__); + dprintk("NFS: --> %s server owner major IDs match\n", __func__); return true; out_major_mismatch: @@ -597,6 +598,100 @@ out_major_mismatch: return false; } +/* + * Returns true if server minor ids match + */ +static bool +nfs4_check_serverowner_minor_id(struct nfs41_server_owner *o1, + struct nfs41_server_owner *o2) +{ + /* Check eir_server_owner so_minor_id */ + if (o1->minor_id != o2->minor_id) + goto out_minor_mismatch; + + dprintk("NFS: --> %s server owner minor IDs match\n", __func__); + return true; + +out_minor_mismatch: + dprintk("NFS: --> %s server owner minor IDs do not match\n", __func__); + return false; +} + +/* + * Returns true if the server scopes match + */ +static bool +nfs4_check_server_scope(struct nfs41_server_scope *s1, + struct nfs41_server_scope *s2) +{ + if (s1->server_scope_sz != s2->server_scope_sz) + goto out_scope_mismatch; + if (memcmp(s1->server_scope, s2->server_scope, + s1->server_scope_sz) != 0) + goto out_scope_mismatch; + + dprintk("NFS: --> %s server scopes match\n", __func__); + return true; + +out_scope_mismatch: + dprintk("NFS: --> %s server scopes do not match\n", + __func__); + return false; +} + +/** + * nfs4_detect_session_trunking - Checks for session trunking. + * + * Called after a successful EXCHANGE_ID on a multi-addr connection. + * Upon success, add the transport. + * + * @clp: original mount nfs_client + * @res: result structure from an exchange_id using the original mount + * nfs_client with a new multi_addr transport + * + * Returns zero on success, otherwise -EINVAL + * + * Note: since the exchange_id for the new multi_addr transport uses the + * same nfs_client from the original mount, the cl_owner_id is reused, + * so eir_clientowner is the same. + */ +int nfs4_detect_session_trunking(struct nfs_client *clp, + struct nfs41_exchange_id_res *res, + struct rpc_xprt *xprt) +{ + /* Check eir_clientid */ + if (!nfs4_match_clientids(clp->cl_clientid, res->clientid)) + goto out_err; + + /* Check eir_server_owner so_major_id */ + if (!nfs4_check_serverowner_major_id(clp->cl_serverowner, + res->server_owner)) + goto out_err; + + /* Check eir_server_owner so_minor_id */ + if (!nfs4_check_serverowner_minor_id(clp->cl_serverowner, + res->server_owner)) + goto out_err; + + /* Check eir_server_scope */ + if (!nfs4_check_server_scope(clp->cl_serverscope, res->server_scope)) + goto out_err; + + /* Session trunking passed, add the xprt */ + rpc_clnt_xprt_switch_add_xprt(clp->cl_rpcclient, xprt); + + pr_info("NFS: %s: Session trunking succeeded for %s\n", + clp->cl_hostname, + xprt->address_strings[RPC_DISPLAY_ADDR]); + + return 0; +out_err: + pr_info("NFS: %s: Session trunking failed for %s\n", clp->cl_hostname, + xprt->address_strings[RPC_DISPLAY_ADDR]); + + return -EINVAL; +} + /** * nfs41_walk_client_list - Find nfs_client that matches a client/server owner * @@ -650,7 +745,7 @@ int nfs41_walk_client_list(struct nfs_client *new, if (pos->cl_cons_state != NFS_CS_READY) continue; - if (!nfs4_match_clientids(pos, new)) + if (!nfs4_match_clientids(pos->cl_clientid, new->cl_clientid)) continue; /* @@ -658,7 +753,8 @@ int nfs41_walk_client_list(struct nfs_client *new, * client id trunking. In either case, we want to fall back * to using the existing nfs_client. */ - if (!nfs4_check_clientid_trunking(pos, new)) + if (!nfs4_check_serverowner_major_id(pos->cl_serverowner, + new->cl_serverowner)) continue; /* Unlike NFSv4.0, we know that NFSv4.1 always uses the diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 0e327528a3ce..ad917bd72b38 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -99,8 +99,8 @@ static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, #ifdef CONFIG_NFS_V4_1 static int nfs41_test_stateid(struct nfs_server *, nfs4_stateid *, struct rpc_cred *); -static int nfs41_free_stateid(struct nfs_server *, nfs4_stateid *, - struct rpc_cred *); +static int nfs41_free_stateid(struct nfs_server *, const nfs4_stateid *, + struct rpc_cred *, bool); #endif #ifdef CONFIG_NFS_V4_SECURITY_LABEL @@ -328,6 +328,33 @@ static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dent kunmap_atomic(start); } +static void nfs4_test_and_free_stateid(struct nfs_server *server, + nfs4_stateid *stateid, + struct rpc_cred *cred) +{ + const struct nfs4_minor_version_ops *ops = server->nfs_client->cl_mvops; + + ops->test_and_free_expired(server, stateid, cred); +} + +static void __nfs4_free_revoked_stateid(struct nfs_server *server, + nfs4_stateid *stateid, + struct rpc_cred *cred) +{ + stateid->type = NFS4_REVOKED_STATEID_TYPE; + nfs4_test_and_free_stateid(server, stateid, cred); +} + +static void nfs4_free_revoked_stateid(struct nfs_server *server, + const nfs4_stateid *stateid, + struct rpc_cred *cred) +{ + nfs4_stateid tmp; + + nfs4_stateid_copy(&tmp, stateid); + __nfs4_free_revoked_stateid(server, &tmp, cred); +} + static long nfs4_update_delay(long *timeout) { long ret; @@ -370,13 +397,23 @@ static int nfs4_do_handle_exception(struct nfs_server *server, exception->delay = 0; exception->recovering = 0; exception->retry = 0; + + if (stateid == NULL && state != NULL) + stateid = &state->stateid; + switch(errorcode) { case 0: return 0; - case -NFS4ERR_OPENMODE: case -NFS4ERR_DELEG_REVOKED: case -NFS4ERR_ADMIN_REVOKED: + case -NFS4ERR_EXPIRED: case -NFS4ERR_BAD_STATEID: + if (inode != NULL && stateid != NULL) { + nfs_inode_find_state_and_recover(inode, + stateid); + goto wait_on_recovery; + } + case -NFS4ERR_OPENMODE: if (inode) { int err; @@ -395,12 +432,6 @@ static int nfs4_do_handle_exception(struct nfs_server *server, if (ret < 0) break; goto wait_on_recovery; - case -NFS4ERR_EXPIRED: - if (state != NULL) { - ret = nfs4_schedule_stateid_recovery(server, state); - if (ret < 0) - break; - } case -NFS4ERR_STALE_STATEID: case -NFS4ERR_STALE_CLIENTID: nfs4_schedule_lease_recovery(clp); @@ -616,6 +647,7 @@ int nfs40_setup_sequence(struct nfs4_slot_table *tbl, } spin_unlock(&tbl->slot_tbl_lock); + slot->privileged = args->sa_privileged ? 1 : 0; args->sa_slot = slot; res->sr_slot = slot; @@ -723,12 +755,20 @@ static int nfs41_sequence_process(struct rpc_task *task, /* Check the SEQUENCE operation status */ switch (res->sr_status) { case 0: + /* If previous op on slot was interrupted and we reused + * the seq# and got a reply from the cache, then retry + */ + if (task->tk_status == -EREMOTEIO && interrupted) { + ++slot->seq_nr; + goto retry_nowait; + } /* Update the slot's sequence and clientid lease timer */ slot->seq_done = 1; clp = session->clp; do_renew_lease(clp, res->sr_timestamp); /* Check sequence flags */ - nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags); + nfs41_handle_sequence_flag_errors(clp, res->sr_status_flags, + !!slot->privileged); nfs41_update_target_slotid(slot->table, slot, res); break; case 1: @@ -875,6 +915,7 @@ int nfs41_setup_sequence(struct nfs4_session *session, } spin_unlock(&tbl->slot_tbl_lock); + slot->privileged = args->sa_privileged ? 1 : 0; args->sa_slot = slot; dprintk("<-- %s slotid=%u seqid=%u\n", __func__, @@ -1353,6 +1394,19 @@ static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode) nfs4_state_set_mode_locked(state, state->state | fmode); } +#ifdef CONFIG_NFS_V4_1 +static bool nfs_open_stateid_recover_openmode(struct nfs4_state *state) +{ + if (state->n_rdonly && !test_bit(NFS_O_RDONLY_STATE, &state->flags)) + return true; + if (state->n_wronly && !test_bit(NFS_O_WRONLY_STATE, &state->flags)) + return true; + if (state->n_rdwr && !test_bit(NFS_O_RDWR_STATE, &state->flags)) + return true; + return false; +} +#endif /* CONFIG_NFS_V4_1 */ + static void nfs_test_and_clear_all_open_stateid(struct nfs4_state *state) { struct nfs_client *clp = state->owner->so_server->nfs_client; @@ -1369,11 +1423,12 @@ static void nfs_test_and_clear_all_open_stateid(struct nfs4_state *state) } static bool nfs_need_update_open_stateid(struct nfs4_state *state, - nfs4_stateid *stateid) + const nfs4_stateid *stateid, nfs4_stateid *freeme) { if (test_and_set_bit(NFS_OPEN_STATE, &state->flags) == 0) return true; if (!nfs4_stateid_match_other(stateid, &state->open_stateid)) { + nfs4_stateid_copy(freeme, &state->open_stateid); nfs_test_and_clear_all_open_stateid(state); return true; } @@ -1437,7 +1492,9 @@ static void nfs_clear_open_stateid(struct nfs4_state *state, nfs4_schedule_state_manager(state->owner->so_server->nfs_client); } -static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode) +static void nfs_set_open_stateid_locked(struct nfs4_state *state, + const nfs4_stateid *stateid, fmode_t fmode, + nfs4_stateid *freeme) { switch (fmode) { case FMODE_READ: @@ -1449,14 +1506,18 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid * case FMODE_READ|FMODE_WRITE: set_bit(NFS_O_RDWR_STATE, &state->flags); } - if (!nfs_need_update_open_stateid(state, stateid)) + if (!nfs_need_update_open_stateid(state, stateid, freeme)) return; if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) nfs4_stateid_copy(&state->stateid, stateid); nfs4_stateid_copy(&state->open_stateid, stateid); } -static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode) +static void __update_open_stateid(struct nfs4_state *state, + const nfs4_stateid *open_stateid, + const nfs4_stateid *deleg_stateid, + fmode_t fmode, + nfs4_stateid *freeme) { /* * Protect the call to nfs4_state_set_mode_locked and @@ -1469,16 +1530,22 @@ static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_s set_bit(NFS_DELEGATED_STATE, &state->flags); } if (open_stateid != NULL) - nfs_set_open_stateid_locked(state, open_stateid, fmode); + nfs_set_open_stateid_locked(state, open_stateid, fmode, freeme); write_sequnlock(&state->seqlock); update_open_stateflags(state, fmode); spin_unlock(&state->owner->so_lock); } -static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, nfs4_stateid *delegation, fmode_t fmode) +static int update_open_stateid(struct nfs4_state *state, + const nfs4_stateid *open_stateid, + const nfs4_stateid *delegation, + fmode_t fmode) { + struct nfs_server *server = NFS_SERVER(state->inode); + struct nfs_client *clp = server->nfs_client; struct nfs_inode *nfsi = NFS_I(state->inode); struct nfs_delegation *deleg_cur; + nfs4_stateid freeme = {0}; int ret = 0; fmode &= (FMODE_READ|FMODE_WRITE); @@ -1500,7 +1567,8 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat goto no_delegation_unlock; nfs_mark_delegation_referenced(deleg_cur); - __update_open_stateid(state, open_stateid, &deleg_cur->stateid, fmode); + __update_open_stateid(state, open_stateid, &deleg_cur->stateid, + fmode, &freeme); ret = 1; no_delegation_unlock: spin_unlock(&deleg_cur->lock); @@ -1508,11 +1576,14 @@ no_delegation: rcu_read_unlock(); if (!ret && open_stateid != NULL) { - __update_open_stateid(state, open_stateid, NULL, fmode); + __update_open_stateid(state, open_stateid, NULL, fmode, &freeme); ret = 1; } if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) - nfs4_schedule_state_manager(state->owner->so_server->nfs_client); + nfs4_schedule_state_manager(clp); + if (freeme.type != 0) + nfs4_test_and_free_stateid(server, &freeme, + state->owner->so_cred); return ret; } @@ -1889,7 +1960,6 @@ static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct case -NFS4ERR_STALE_CLIENTID: case -NFS4ERR_STALE_STATEID: set_bit(NFS_DELEGATED_STATE, &state->flags); - case -NFS4ERR_EXPIRED: /* Don't recall a delegation if it was lost */ nfs4_schedule_lease_recovery(server->nfs_client); return -EAGAIN; @@ -1901,6 +1971,7 @@ static int nfs4_handle_delegation_recall_error(struct nfs_server *server, struct return -EAGAIN; case -NFS4ERR_DELEG_REVOKED: case -NFS4ERR_ADMIN_REVOKED: + case -NFS4ERR_EXPIRED: case -NFS4ERR_BAD_STATEID: case -NFS4ERR_OPENMODE: nfs_inode_find_state_and_recover(state->inode, @@ -2382,9 +2453,10 @@ static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *sta return ret; } -static void nfs_finish_clear_delegation_stateid(struct nfs4_state *state) +static void nfs_finish_clear_delegation_stateid(struct nfs4_state *state, + const nfs4_stateid *stateid) { - nfs_remove_bad_delegation(state->inode); + nfs_remove_bad_delegation(state->inode, stateid); write_seqlock(&state->seqlock); nfs4_stateid_copy(&state->stateid, &state->open_stateid); write_sequnlock(&state->seqlock); @@ -2394,7 +2466,7 @@ static void nfs_finish_clear_delegation_stateid(struct nfs4_state *state) static void nfs40_clear_delegation_stateid(struct nfs4_state *state) { if (rcu_access_pointer(NFS_I(state->inode)->delegation) != NULL) - nfs_finish_clear_delegation_stateid(state); + nfs_finish_clear_delegation_stateid(state, NULL); } static int nfs40_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) @@ -2404,7 +2476,45 @@ static int nfs40_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *st return nfs4_open_expired(sp, state); } +static int nfs40_test_and_free_expired_stateid(struct nfs_server *server, + nfs4_stateid *stateid, + struct rpc_cred *cred) +{ + return -NFS4ERR_BAD_STATEID; +} + #if defined(CONFIG_NFS_V4_1) +static int nfs41_test_and_free_expired_stateid(struct nfs_server *server, + nfs4_stateid *stateid, + struct rpc_cred *cred) +{ + int status; + + switch (stateid->type) { + default: + break; + case NFS4_INVALID_STATEID_TYPE: + case NFS4_SPECIAL_STATEID_TYPE: + return -NFS4ERR_BAD_STATEID; + case NFS4_REVOKED_STATEID_TYPE: + goto out_free; + } + + status = nfs41_test_stateid(server, stateid, cred); + switch (status) { + case -NFS4ERR_EXPIRED: + case -NFS4ERR_ADMIN_REVOKED: + case -NFS4ERR_DELEG_REVOKED: + break; + default: + return status; + } +out_free: + /* Ack the revoked state to the server */ + nfs41_free_stateid(server, stateid, cred, true); + return -NFS4ERR_EXPIRED; +} + static void nfs41_check_delegation_stateid(struct nfs4_state *state) { struct nfs_server *server = NFS_SERVER(state->inode); @@ -2422,23 +2532,68 @@ static void nfs41_check_delegation_stateid(struct nfs4_state *state) } nfs4_stateid_copy(&stateid, &delegation->stateid); + if (test_bit(NFS_DELEGATION_REVOKED, &delegation->flags)) { + rcu_read_unlock(); + nfs_finish_clear_delegation_stateid(state, &stateid); + return; + } + + if (!test_and_clear_bit(NFS_DELEGATION_TEST_EXPIRED, &delegation->flags)) { + rcu_read_unlock(); + return; + } + cred = get_rpccred(delegation->cred); rcu_read_unlock(); - status = nfs41_test_stateid(server, &stateid, cred); + status = nfs41_test_and_free_expired_stateid(server, &stateid, cred); trace_nfs4_test_delegation_stateid(state, NULL, status); - - if (status != NFS_OK) { - /* Free the stateid unless the server explicitly - * informs us the stateid is unrecognized. */ - if (status != -NFS4ERR_BAD_STATEID) - nfs41_free_stateid(server, &stateid, cred); - nfs_finish_clear_delegation_stateid(state); - } + if (status == -NFS4ERR_EXPIRED || status == -NFS4ERR_BAD_STATEID) + nfs_finish_clear_delegation_stateid(state, &stateid); put_rpccred(cred); } /** + * nfs41_check_expired_locks - possibly free a lock stateid + * + * @state: NFSv4 state for an inode + * + * Returns NFS_OK if recovery for this stateid is now finished. + * Otherwise a negative NFS4ERR value is returned. + */ +static int nfs41_check_expired_locks(struct nfs4_state *state) +{ + int status, ret = NFS_OK; + struct nfs4_lock_state *lsp; + struct nfs_server *server = NFS_SERVER(state->inode); + + if (!test_bit(LK_STATE_IN_USE, &state->flags)) + goto out; + list_for_each_entry(lsp, &state->lock_states, ls_locks) { + if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { + struct rpc_cred *cred = lsp->ls_state->owner->so_cred; + + status = nfs41_test_and_free_expired_stateid(server, + &lsp->ls_stateid, + cred); + trace_nfs4_test_lock_stateid(state, lsp, status); + if (status == -NFS4ERR_EXPIRED || + status == -NFS4ERR_BAD_STATEID) { + clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); + lsp->ls_stateid.type = NFS4_INVALID_STATEID_TYPE; + if (!recover_lost_locks) + set_bit(NFS_LOCK_LOST, &lsp->ls_flags); + } else if (status != NFS_OK) { + ret = status; + break; + } + } + }; +out: + return ret; +} + +/** * nfs41_check_open_stateid - possibly free an open stateid * * @state: NFSv4 state for an inode @@ -2453,26 +2608,28 @@ static int nfs41_check_open_stateid(struct nfs4_state *state) struct rpc_cred *cred = state->owner->so_cred; int status; - /* If a state reset has been done, test_stateid is unneeded */ - if ((test_bit(NFS_O_RDONLY_STATE, &state->flags) == 0) && - (test_bit(NFS_O_WRONLY_STATE, &state->flags) == 0) && - (test_bit(NFS_O_RDWR_STATE, &state->flags) == 0)) + if (test_bit(NFS_OPEN_STATE, &state->flags) == 0) { + if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0) { + if (nfs4_have_delegation(state->inode, state->state)) + return NFS_OK; + return -NFS4ERR_OPENMODE; + } return -NFS4ERR_BAD_STATEID; - - status = nfs41_test_stateid(server, stateid, cred); + } + status = nfs41_test_and_free_expired_stateid(server, stateid, cred); trace_nfs4_test_open_stateid(state, NULL, status); - if (status != NFS_OK) { - /* Free the stateid unless the server explicitly - * informs us the stateid is unrecognized. */ - if (status != -NFS4ERR_BAD_STATEID) - nfs41_free_stateid(server, stateid, cred); - + if (status == -NFS4ERR_EXPIRED || status == -NFS4ERR_BAD_STATEID) { clear_bit(NFS_O_RDONLY_STATE, &state->flags); clear_bit(NFS_O_WRONLY_STATE, &state->flags); clear_bit(NFS_O_RDWR_STATE, &state->flags); clear_bit(NFS_OPEN_STATE, &state->flags); + stateid->type = NFS4_INVALID_STATEID_TYPE; } - return status; + if (status != NFS_OK) + return status; + if (nfs_open_stateid_recover_openmode(state)) + return -NFS4ERR_OPENMODE; + return NFS_OK; } static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *state) @@ -2480,6 +2637,9 @@ static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *st int status; nfs41_check_delegation_stateid(state); + status = nfs41_check_expired_locks(state); + if (status != NFS_OK) + return status; status = nfs41_check_open_stateid(state); if (status != NFS_OK) status = nfs4_open_expired(sp, state); @@ -2537,6 +2697,8 @@ static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, goto out; if (server->caps & NFS_CAP_POSIX_LOCK) set_bit(NFS_STATE_POSIX_LOCKS, &state->flags); + if (opendata->o_res.rflags & NFS4_OPEN_RESULT_MAY_NOTIFY_LOCK) + set_bit(NFS_STATE_MAY_NOTIFY_LOCK, &state->flags); dentry = opendata->dentry; if (d_really_is_negative(dentry)) { @@ -2899,9 +3061,12 @@ static void nfs4_close_done(struct rpc_task *task, void *data) break; case -NFS4ERR_ADMIN_REVOKED: case -NFS4ERR_STALE_STATEID: + case -NFS4ERR_EXPIRED: + nfs4_free_revoked_stateid(server, + &calldata->arg.stateid, + task->tk_msg.rpc_cred); case -NFS4ERR_OLD_STATEID: case -NFS4ERR_BAD_STATEID: - case -NFS4ERR_EXPIRED: if (!nfs4_stateid_match(&calldata->arg.stateid, &state->open_stateid)) { rpc_restart_call_prepare(task); @@ -4312,7 +4477,7 @@ static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, s if (error == 0) { /* block layout checks this! */ server->pnfs_blksize = fsinfo->blksize; - set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype); + set_pnfs_layoutdriver(server, fhandle, fsinfo); } return error; @@ -4399,24 +4564,25 @@ static bool nfs4_error_stateid_expired(int err) return false; } -void __nfs4_read_done_cb(struct nfs_pgio_header *hdr) -{ - nfs_invalidate_atime(hdr->inode); -} - static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_pgio_header *hdr) { struct nfs_server *server = NFS_SERVER(hdr->inode); trace_nfs4_read(hdr, task->tk_status); - if (nfs4_async_handle_error(task, server, - hdr->args.context->state, - NULL) == -EAGAIN) { - rpc_restart_call_prepare(task); - return -EAGAIN; + if (task->tk_status < 0) { + struct nfs4_exception exception = { + .inode = hdr->inode, + .state = hdr->args.context->state, + .stateid = &hdr->args.stateid, + }; + task->tk_status = nfs4_async_handle_exception(task, + server, task->tk_status, &exception); + if (exception.retry) { + rpc_restart_call_prepare(task); + return -EAGAIN; + } } - __nfs4_read_done_cb(hdr); if (task->tk_status > 0) renew_lease(server, hdr->timestamp); return 0; @@ -4445,6 +4611,8 @@ static int nfs4_read_done(struct rpc_task *task, struct nfs_pgio_header *hdr) return -EAGAIN; if (nfs4_read_stateid_changed(task, &hdr->args)) return -EAGAIN; + if (task->tk_status > 0) + nfs_invalidate_atime(hdr->inode); return hdr->pgio_done_cb ? hdr->pgio_done_cb(task, hdr) : nfs4_read_done_cb(task, hdr); } @@ -4482,11 +4650,19 @@ static int nfs4_write_done_cb(struct rpc_task *task, struct inode *inode = hdr->inode; trace_nfs4_write(hdr, task->tk_status); - if (nfs4_async_handle_error(task, NFS_SERVER(inode), - hdr->args.context->state, - NULL) == -EAGAIN) { - rpc_restart_call_prepare(task); - return -EAGAIN; + if (task->tk_status < 0) { + struct nfs4_exception exception = { + .inode = hdr->inode, + .state = hdr->args.context->state, + .stateid = &hdr->args.stateid, + }; + task->tk_status = nfs4_async_handle_exception(task, + NFS_SERVER(inode), task->tk_status, + &exception); + if (exception.retry) { + rpc_restart_call_prepare(task); + return -EAGAIN; + } } if (task->tk_status >= 0) { renew_lease(NFS_SERVER(inode), hdr->timestamp); @@ -5123,12 +5299,14 @@ static void nfs4_init_boot_verifier(const struct nfs_client *clp, if (test_bit(NFS4CLNT_PURGE_STATE, &clp->cl_state)) { /* An impossible timestamp guarantees this value * will never match a generated boot time. */ - verf[0] = 0; - verf[1] = cpu_to_be32(NSEC_PER_SEC + 1); + verf[0] = cpu_to_be32(U32_MAX); + verf[1] = cpu_to_be32(U32_MAX); } else { struct nfs_net *nn = net_generic(clp->cl_net, nfs_net_id); - verf[0] = cpu_to_be32(nn->boot_time.tv_sec); - verf[1] = cpu_to_be32(nn->boot_time.tv_nsec); + u64 ns = ktime_to_ns(nn->boot_time); + + verf[0] = cpu_to_be32(ns >> 32); + verf[1] = cpu_to_be32(ns); } memcpy(bootverf->data, verf, sizeof(bootverf->data)); } @@ -5393,10 +5571,13 @@ static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) renew_lease(data->res.server, data->timestamp); case -NFS4ERR_ADMIN_REVOKED: case -NFS4ERR_DELEG_REVOKED: + case -NFS4ERR_EXPIRED: + nfs4_free_revoked_stateid(data->res.server, + data->args.stateid, + task->tk_msg.rpc_cred); case -NFS4ERR_BAD_STATEID: case -NFS4ERR_OLD_STATEID: case -NFS4ERR_STALE_STATEID: - case -NFS4ERR_EXPIRED: task->tk_status = 0; if (data->roc) pnfs_roc_set_barrier(data->inode, data->roc_barrier); @@ -5528,22 +5709,6 @@ int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4 return err; } -#define NFS4_LOCK_MINTIMEOUT (1 * HZ) -#define NFS4_LOCK_MAXTIMEOUT (30 * HZ) - -/* - * sleep, with exponential backoff, and retry the LOCK operation. - */ -static unsigned long -nfs4_set_lock_task_retry(unsigned long timeout) -{ - freezable_schedule_timeout_killable_unsafe(timeout); - timeout <<= 1; - if (timeout > NFS4_LOCK_MAXTIMEOUT) - return NFS4_LOCK_MAXTIMEOUT; - return timeout; -} - static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock *request) { struct inode *inode = state->inode; @@ -5600,11 +5765,6 @@ static int nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock * return err; } -static int do_vfs_lock(struct inode *inode, struct file_lock *fl) -{ - return locks_lock_inode_wait(inode, fl); -} - struct nfs4_unlockdata { struct nfs_locku_args arg; struct nfs_locku_res res; @@ -5657,14 +5817,18 @@ static void nfs4_locku_done(struct rpc_task *task, void *data) switch (task->tk_status) { case 0: renew_lease(calldata->server, calldata->timestamp); - do_vfs_lock(calldata->lsp->ls_state->inode, &calldata->fl); + locks_lock_inode_wait(calldata->lsp->ls_state->inode, &calldata->fl); if (nfs4_update_lock_stateid(calldata->lsp, &calldata->res.stateid)) break; + case -NFS4ERR_ADMIN_REVOKED: + case -NFS4ERR_EXPIRED: + nfs4_free_revoked_stateid(calldata->server, + &calldata->arg.stateid, + task->tk_msg.rpc_cred); case -NFS4ERR_BAD_STATEID: case -NFS4ERR_OLD_STATEID: case -NFS4ERR_STALE_STATEID: - case -NFS4ERR_EXPIRED: if (!nfs4_stateid_match(&calldata->arg.stateid, &calldata->lsp->ls_stateid)) rpc_restart_call_prepare(task); @@ -5765,7 +5929,7 @@ static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock * mutex_lock(&sp->so_delegreturn_mutex); /* Exclude nfs4_reclaim_open_stateid() - note nesting! */ down_read(&nfsi->rwsem); - if (do_vfs_lock(inode, request) == -ENOENT) { + if (locks_lock_inode_wait(inode, request) == -ENOENT) { up_read(&nfsi->rwsem); mutex_unlock(&sp->so_delegreturn_mutex); goto out; @@ -5906,7 +6070,7 @@ static void nfs4_lock_done(struct rpc_task *task, void *calldata) data->timestamp); if (data->arg.new_lock) { data->fl.fl_flags &= ~(FL_SLEEP | FL_ACCESS); - if (do_vfs_lock(lsp->ls_state->inode, &data->fl) < 0) { + if (locks_lock_inode_wait(lsp->ls_state->inode, &data->fl) < 0) { rpc_restart_call_prepare(task); break; } @@ -5965,6 +6129,7 @@ static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_ { switch (error) { case -NFS4ERR_ADMIN_REVOKED: + case -NFS4ERR_EXPIRED: case -NFS4ERR_BAD_STATEID: lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; if (new_lock_owner != 0 || @@ -5973,7 +6138,6 @@ static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_ break; case -NFS4ERR_STALE_STATEID: lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED; - case -NFS4ERR_EXPIRED: nfs4_schedule_lease_recovery(server->nfs_client); }; } @@ -6083,52 +6247,19 @@ out: } #if defined(CONFIG_NFS_V4_1) -/** - * nfs41_check_expired_locks - possibly free a lock stateid - * - * @state: NFSv4 state for an inode - * - * Returns NFS_OK if recovery for this stateid is now finished. - * Otherwise a negative NFS4ERR value is returned. - */ -static int nfs41_check_expired_locks(struct nfs4_state *state) -{ - int status, ret = -NFS4ERR_BAD_STATEID; - struct nfs4_lock_state *lsp; - struct nfs_server *server = NFS_SERVER(state->inode); - - list_for_each_entry(lsp, &state->lock_states, ls_locks) { - if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { - struct rpc_cred *cred = lsp->ls_state->owner->so_cred; - - status = nfs41_test_stateid(server, - &lsp->ls_stateid, - cred); - trace_nfs4_test_lock_stateid(state, lsp, status); - if (status != NFS_OK) { - /* Free the stateid unless the server - * informs us the stateid is unrecognized. */ - if (status != -NFS4ERR_BAD_STATEID) - nfs41_free_stateid(server, - &lsp->ls_stateid, - cred); - clear_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags); - ret = status; - } - } - }; - - return ret; -} - static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *request) { - int status = NFS_OK; + struct nfs4_lock_state *lsp; + int status; - if (test_bit(LK_STATE_IN_USE, &state->flags)) - status = nfs41_check_expired_locks(state); - if (status != NFS_OK) - status = nfs4_lock_expired(state, request); + status = nfs4_set_lock_state(state, request); + if (status != 0) + return status; + lsp = request->fl_u.nfs4_fl.owner; + if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags) || + test_bit(NFS_LOCK_LOST, &lsp->ls_flags)) + return 0; + status = nfs4_lock_expired(state, request); return status; } #endif @@ -6138,17 +6269,10 @@ static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock struct nfs_inode *nfsi = NFS_I(state->inode); struct nfs4_state_owner *sp = state->owner; unsigned char fl_flags = request->fl_flags; - int status = -ENOLCK; + int status; - if ((fl_flags & FL_POSIX) && - !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) - goto out; - /* Is this a delegated open? */ - status = nfs4_set_lock_state(state, request); - if (status != 0) - goto out; request->fl_flags |= FL_ACCESS; - status = do_vfs_lock(state->inode, request); + status = locks_lock_inode_wait(state->inode, request); if (status < 0) goto out; mutex_lock(&sp->so_delegreturn_mutex); @@ -6157,7 +6281,7 @@ static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock /* Yes: cache locks! */ /* ...but avoid races with delegation recall... */ request->fl_flags = fl_flags & ~FL_SLEEP; - status = do_vfs_lock(state->inode, request); + status = locks_lock_inode_wait(state->inode, request); up_read(&nfsi->rwsem); mutex_unlock(&sp->so_delegreturn_mutex); goto out; @@ -6188,12 +6312,124 @@ static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock * return err; } +#define NFS4_LOCK_MINTIMEOUT (1 * HZ) +#define NFS4_LOCK_MAXTIMEOUT (30 * HZ) + +static int +nfs4_retry_setlk_simple(struct nfs4_state *state, int cmd, + struct file_lock *request) +{ + int status = -ERESTARTSYS; + unsigned long timeout = NFS4_LOCK_MINTIMEOUT; + + while(!signalled()) { + status = nfs4_proc_setlk(state, cmd, request); + if ((status != -EAGAIN) || IS_SETLK(cmd)) + break; + freezable_schedule_timeout_interruptible(timeout); + timeout *= 2; + timeout = min_t(unsigned long, NFS4_LOCK_MAXTIMEOUT, timeout); + status = -ERESTARTSYS; + } + return status; +} + +#ifdef CONFIG_NFS_V4_1 +struct nfs4_lock_waiter { + struct task_struct *task; + struct inode *inode; + struct nfs_lowner *owner; + bool notified; +}; + +static int +nfs4_wake_lock_waiter(wait_queue_t *wait, unsigned int mode, int flags, void *key) +{ + int ret; + struct cb_notify_lock_args *cbnl = key; + struct nfs4_lock_waiter *waiter = wait->private; + struct nfs_lowner *lowner = &cbnl->cbnl_owner, + *wowner = waiter->owner; + + /* Only wake if the callback was for the same owner */ + if (lowner->clientid != wowner->clientid || + lowner->id != wowner->id || + lowner->s_dev != wowner->s_dev) + return 0; + + /* Make sure it's for the right inode */ + if (nfs_compare_fh(NFS_FH(waiter->inode), &cbnl->cbnl_fh)) + return 0; + + waiter->notified = true; + + /* override "private" so we can use default_wake_function */ + wait->private = waiter->task; + ret = autoremove_wake_function(wait, mode, flags, key); + wait->private = waiter; + return ret; +} + +static int +nfs4_retry_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) +{ + int status = -ERESTARTSYS; + unsigned long flags; + struct nfs4_lock_state *lsp = request->fl_u.nfs4_fl.owner; + struct nfs_server *server = NFS_SERVER(state->inode); + struct nfs_client *clp = server->nfs_client; + wait_queue_head_t *q = &clp->cl_lock_waitq; + struct nfs_lowner owner = { .clientid = clp->cl_clientid, + .id = lsp->ls_seqid.owner_id, + .s_dev = server->s_dev }; + struct nfs4_lock_waiter waiter = { .task = current, + .inode = state->inode, + .owner = &owner, + .notified = false }; + wait_queue_t wait; + + /* Don't bother with waitqueue if we don't expect a callback */ + if (!test_bit(NFS_STATE_MAY_NOTIFY_LOCK, &state->flags)) + return nfs4_retry_setlk_simple(state, cmd, request); + + init_wait(&wait); + wait.private = &waiter; + wait.func = nfs4_wake_lock_waiter; + add_wait_queue(q, &wait); + + while(!signalled()) { + status = nfs4_proc_setlk(state, cmd, request); + if ((status != -EAGAIN) || IS_SETLK(cmd)) + break; + + status = -ERESTARTSYS; + spin_lock_irqsave(&q->lock, flags); + if (waiter.notified) { + spin_unlock_irqrestore(&q->lock, flags); + continue; + } + set_current_state(TASK_INTERRUPTIBLE); + spin_unlock_irqrestore(&q->lock, flags); + + freezable_schedule_timeout_interruptible(NFS4_LOCK_MAXTIMEOUT); + } + + finish_wait(q, &wait); + return status; +} +#else /* !CONFIG_NFS_V4_1 */ +static inline int +nfs4_retry_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) +{ + return nfs4_retry_setlk_simple(state, cmd, request); +} +#endif + static int nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) { struct nfs_open_context *ctx; struct nfs4_state *state; - unsigned long timeout = NFS4_LOCK_MINTIMEOUT; int status; /* verify open state */ @@ -6220,6 +6456,11 @@ nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) if (state == NULL) return -ENOLCK; + + if ((request->fl_flags & FL_POSIX) && + !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags)) + return -ENOLCK; + /* * Don't rely on the VFS having checked the file open mode, * since it won't do this for flock() locks. @@ -6234,16 +6475,11 @@ nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) return -EBADF; } - do { - status = nfs4_proc_setlk(state, cmd, request); - if ((status != -EAGAIN) || IS_SETLK(cmd)) - break; - timeout = nfs4_set_lock_task_retry(timeout); - status = -ERESTARTSYS; - if (signalled()) - break; - } while(status < 0); - return status; + status = nfs4_set_lock_state(state, request); + if (status != 0) + return status; + + return nfs4_retry_setlk(state, cmd, request); } int nfs4_lock_delegation_recall(struct file_lock *fl, struct nfs4_state *state, const nfs4_stateid *stateid) @@ -7104,75 +7340,161 @@ static int nfs4_sp4_select_mode(struct nfs_client *clp, return 0; } +struct nfs41_exchange_id_data { + struct nfs41_exchange_id_res res; + struct nfs41_exchange_id_args args; + struct rpc_xprt *xprt; + int rpc_status; +}; + +static void nfs4_exchange_id_done(struct rpc_task *task, void *data) +{ + struct nfs41_exchange_id_data *cdata = + (struct nfs41_exchange_id_data *)data; + struct nfs_client *clp = cdata->args.client; + int status = task->tk_status; + + trace_nfs4_exchange_id(clp, status); + + if (status == 0) + status = nfs4_check_cl_exchange_flags(cdata->res.flags); + + if (cdata->xprt && status == 0) { + status = nfs4_detect_session_trunking(clp, &cdata->res, + cdata->xprt); + goto out; + } + + if (status == 0) + status = nfs4_sp4_select_mode(clp, &cdata->res.state_protect); + + if (status == 0) { + clp->cl_clientid = cdata->res.clientid; + clp->cl_exchange_flags = cdata->res.flags; + /* Client ID is not confirmed */ + if (!(cdata->res.flags & EXCHGID4_FLAG_CONFIRMED_R)) { + clear_bit(NFS4_SESSION_ESTABLISHED, + &clp->cl_session->session_state); + clp->cl_seqid = cdata->res.seqid; + } + + kfree(clp->cl_serverowner); + clp->cl_serverowner = cdata->res.server_owner; + cdata->res.server_owner = NULL; + + /* use the most recent implementation id */ + kfree(clp->cl_implid); + clp->cl_implid = cdata->res.impl_id; + cdata->res.impl_id = NULL; + + if (clp->cl_serverscope != NULL && + !nfs41_same_server_scope(clp->cl_serverscope, + cdata->res.server_scope)) { + dprintk("%s: server_scope mismatch detected\n", + __func__); + set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); + kfree(clp->cl_serverscope); + clp->cl_serverscope = NULL; + } + + if (clp->cl_serverscope == NULL) { + clp->cl_serverscope = cdata->res.server_scope; + cdata->res.server_scope = NULL; + } + /* Save the EXCHANGE_ID verifier session trunk tests */ + memcpy(clp->cl_confirm.data, cdata->args.verifier->data, + sizeof(clp->cl_confirm.data)); + } +out: + cdata->rpc_status = status; + return; +} + +static void nfs4_exchange_id_release(void *data) +{ + struct nfs41_exchange_id_data *cdata = + (struct nfs41_exchange_id_data *)data; + + nfs_put_client(cdata->args.client); + if (cdata->xprt) { + xprt_put(cdata->xprt); + rpc_clnt_xprt_switch_put(cdata->args.client->cl_rpcclient); + } + kfree(cdata->res.impl_id); + kfree(cdata->res.server_scope); + kfree(cdata->res.server_owner); + kfree(cdata); +} + +static const struct rpc_call_ops nfs4_exchange_id_call_ops = { + .rpc_call_done = nfs4_exchange_id_done, + .rpc_release = nfs4_exchange_id_release, +}; + /* * _nfs4_proc_exchange_id() * * Wrapper for EXCHANGE_ID operation. */ static int _nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred, - u32 sp4_how) + u32 sp4_how, struct rpc_xprt *xprt) { nfs4_verifier verifier; - struct nfs41_exchange_id_args args = { - .verifier = &verifier, - .client = clp, -#ifdef CONFIG_NFS_V4_1_MIGRATION - .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | - EXCHGID4_FLAG_BIND_PRINC_STATEID | - EXCHGID4_FLAG_SUPP_MOVED_MIGR, -#else - .flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | - EXCHGID4_FLAG_BIND_PRINC_STATEID, -#endif - }; - struct nfs41_exchange_id_res res = { - 0 - }; - int status; struct rpc_message msg = { .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_EXCHANGE_ID], - .rpc_argp = &args, - .rpc_resp = &res, .rpc_cred = cred, }; + struct rpc_task_setup task_setup_data = { + .rpc_client = clp->cl_rpcclient, + .callback_ops = &nfs4_exchange_id_call_ops, + .rpc_message = &msg, + .flags = RPC_TASK_ASYNC | RPC_TASK_TIMEOUT, + }; + struct nfs41_exchange_id_data *calldata; + struct rpc_task *task; + int status = -EIO; + + if (!atomic_inc_not_zero(&clp->cl_count)) + goto out; + + status = -ENOMEM; + calldata = kzalloc(sizeof(*calldata), GFP_NOFS); + if (!calldata) + goto out; - nfs4_init_boot_verifier(clp, &verifier); + if (!xprt) + nfs4_init_boot_verifier(clp, &verifier); status = nfs4_init_uniform_client_string(clp); if (status) - goto out; + goto out_calldata; dprintk("NFS call exchange_id auth=%s, '%s'\n", clp->cl_rpcclient->cl_auth->au_ops->au_name, clp->cl_owner_id); - res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), - GFP_NOFS); - if (unlikely(res.server_owner == NULL)) { - status = -ENOMEM; - goto out; - } + calldata->res.server_owner = kzalloc(sizeof(struct nfs41_server_owner), + GFP_NOFS); + status = -ENOMEM; + if (unlikely(calldata->res.server_owner == NULL)) + goto out_calldata; - res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), + calldata->res.server_scope = kzalloc(sizeof(struct nfs41_server_scope), GFP_NOFS); - if (unlikely(res.server_scope == NULL)) { - status = -ENOMEM; + if (unlikely(calldata->res.server_scope == NULL)) goto out_server_owner; - } - res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); - if (unlikely(res.impl_id == NULL)) { - status = -ENOMEM; + calldata->res.impl_id = kzalloc(sizeof(struct nfs41_impl_id), GFP_NOFS); + if (unlikely(calldata->res.impl_id == NULL)) goto out_server_scope; - } switch (sp4_how) { case SP4_NONE: - args.state_protect.how = SP4_NONE; + calldata->args.state_protect.how = SP4_NONE; break; case SP4_MACH_CRED: - args.state_protect = nfs4_sp4_mach_cred_request; + calldata->args.state_protect = nfs4_sp4_mach_cred_request; break; default: @@ -7181,56 +7503,42 @@ static int _nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred, status = -EINVAL; goto out_impl_id; } + if (xprt) { + calldata->xprt = xprt; + task_setup_data.rpc_xprt = xprt; + task_setup_data.flags = + RPC_TASK_SOFT|RPC_TASK_SOFTCONN|RPC_TASK_ASYNC; + calldata->args.verifier = &clp->cl_confirm; + } else { + calldata->args.verifier = &verifier; + } + calldata->args.client = clp; +#ifdef CONFIG_NFS_V4_1_MIGRATION + calldata->args.flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | + EXCHGID4_FLAG_BIND_PRINC_STATEID | + EXCHGID4_FLAG_SUPP_MOVED_MIGR, +#else + calldata->args.flags = EXCHGID4_FLAG_SUPP_MOVED_REFER | + EXCHGID4_FLAG_BIND_PRINC_STATEID, +#endif + msg.rpc_argp = &calldata->args; + msg.rpc_resp = &calldata->res; + task_setup_data.callback_data = calldata; - status = rpc_call_sync(clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); - trace_nfs4_exchange_id(clp, status); - if (status == 0) - status = nfs4_check_cl_exchange_flags(res.flags); - - if (status == 0) - status = nfs4_sp4_select_mode(clp, &res.state_protect); - - if (status == 0) { - clp->cl_clientid = res.clientid; - clp->cl_exchange_flags = res.flags; - /* Client ID is not confirmed */ - if (!(res.flags & EXCHGID4_FLAG_CONFIRMED_R)) { - clear_bit(NFS4_SESSION_ESTABLISHED, - &clp->cl_session->session_state); - clp->cl_seqid = res.seqid; - } - - kfree(clp->cl_serverowner); - clp->cl_serverowner = res.server_owner; - res.server_owner = NULL; - - /* use the most recent implementation id */ - kfree(clp->cl_implid); - clp->cl_implid = res.impl_id; - res.impl_id = NULL; - - if (clp->cl_serverscope != NULL && - !nfs41_same_server_scope(clp->cl_serverscope, - res.server_scope)) { - dprintk("%s: server_scope mismatch detected\n", - __func__); - set_bit(NFS4CLNT_SERVER_SCOPE_MISMATCH, &clp->cl_state); - kfree(clp->cl_serverscope); - clp->cl_serverscope = NULL; - } - - if (clp->cl_serverscope == NULL) { - clp->cl_serverscope = res.server_scope; - res.server_scope = NULL; - } + task = rpc_run_task(&task_setup_data); + if (IS_ERR(task)) { + status = PTR_ERR(task); + goto out_impl_id; } -out_impl_id: - kfree(res.impl_id); -out_server_scope: - kfree(res.server_scope); -out_server_owner: - kfree(res.server_owner); + if (!xprt) { + status = rpc_wait_for_completion_task(task); + if (!status) + status = calldata->rpc_status; + } else /* session trunking test */ + status = calldata->rpc_status; + + rpc_put_task(task); out: if (clp->cl_implid != NULL) dprintk("NFS reply exchange_id: Server Implementation ID: " @@ -7240,6 +7548,16 @@ out: clp->cl_implid->date.nseconds); dprintk("NFS reply exchange_id: %d\n", status); return status; + +out_impl_id: + kfree(calldata->res.impl_id); +out_server_scope: + kfree(calldata->res.server_scope); +out_server_owner: + kfree(calldata->res.server_owner); +out_calldata: + kfree(calldata); + goto out; } /* @@ -7262,14 +7580,45 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) /* try SP4_MACH_CRED if krb5i/p */ if (authflavor == RPC_AUTH_GSS_KRB5I || authflavor == RPC_AUTH_GSS_KRB5P) { - status = _nfs4_proc_exchange_id(clp, cred, SP4_MACH_CRED); + status = _nfs4_proc_exchange_id(clp, cred, SP4_MACH_CRED, NULL); if (!status) return 0; } /* try SP4_NONE */ - return _nfs4_proc_exchange_id(clp, cred, SP4_NONE); + return _nfs4_proc_exchange_id(clp, cred, SP4_NONE, NULL); +} + +/** + * nfs4_test_session_trunk + * + * This is an add_xprt_test() test function called from + * rpc_clnt_setup_test_and_add_xprt. + * + * The rpc_xprt_switch is referrenced by rpc_clnt_setup_test_and_add_xprt + * and is dereferrenced in nfs4_exchange_id_release + * + * Upon success, add the new transport to the rpc_clnt + * + * @clnt: struct rpc_clnt to get new transport + * @xprt: the rpc_xprt to test + * @data: call data for _nfs4_proc_exchange_id. + */ +int nfs4_test_session_trunk(struct rpc_clnt *clnt, struct rpc_xprt *xprt, + void *data) +{ + struct nfs4_add_xprt_data *adata = (struct nfs4_add_xprt_data *)data; + u32 sp4_how; + + dprintk("--> %s try %s\n", __func__, + xprt->address_strings[RPC_DISPLAY_ADDR]); + + sp4_how = (adata->clp->cl_sp4_flags == 0 ? SP4_NONE : SP4_MACH_CRED); + + /* Test connection for session trunking. Async exchange_id call */ + return _nfs4_proc_exchange_id(adata->clp, adata->cred, sp4_how, xprt); } +EXPORT_SYMBOL_GPL(nfs4_test_session_trunk); static int _nfs4_proc_destroy_clientid(struct nfs_client *clp, struct rpc_cred *cred) @@ -7463,7 +7812,7 @@ static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args, args->bc_attrs.max_resp_sz = max_bc_payload; args->bc_attrs.max_resp_sz_cached = 0; args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS; - args->bc_attrs.max_reqs = NFS41_BC_MAX_CALLBACKS; + args->bc_attrs.max_reqs = min_t(unsigned short, max_session_cb_slots, 1); dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u " "max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n", @@ -7510,10 +7859,9 @@ static int nfs4_verify_back_channel_attrs(struct nfs41_create_session_args *args return -EINVAL; if (rcvd->max_resp_sz_cached > sent->max_resp_sz_cached) return -EINVAL; - /* These would render the backchannel useless: */ - if (rcvd->max_ops != sent->max_ops) + if (rcvd->max_ops > sent->max_ops) return -EINVAL; - if (rcvd->max_reqs != sent->max_reqs) + if (rcvd->max_reqs > sent->max_reqs) return -EINVAL; out: return 0; @@ -7982,6 +8330,8 @@ nfs4_layoutget_handle_exception(struct rpc_task *task, case -NFS4ERR_RECALLCONFLICT: status = -ERECALLCONFLICT; break; + case -NFS4ERR_DELEG_REVOKED: + case -NFS4ERR_ADMIN_REVOKED: case -NFS4ERR_EXPIRED: case -NFS4ERR_BAD_STATEID: exception->timeout = 0; @@ -7993,6 +8343,7 @@ nfs4_layoutget_handle_exception(struct rpc_task *task, &lgp->args.ctx->state->stateid)) { spin_unlock(&inode->i_lock); exception->state = lgp->args.ctx->state; + exception->stateid = &lgp->args.stateid; break; } @@ -8591,6 +8942,24 @@ static int _nfs41_test_stateid(struct nfs_server *server, return -res.status; } +static void nfs4_handle_delay_or_session_error(struct nfs_server *server, + int err, struct nfs4_exception *exception) +{ + exception->retry = 0; + switch(err) { + case -NFS4ERR_DELAY: + case -NFS4ERR_RETRY_UNCACHED_REP: + nfs4_handle_exception(server, err, exception); + break; + case -NFS4ERR_BADSESSION: + case -NFS4ERR_BADSLOT: + case -NFS4ERR_BAD_HIGH_SLOT: + case -NFS4ERR_CONN_NOT_BOUND_TO_SESSION: + case -NFS4ERR_DEADSESSION: + nfs4_do_handle_exception(server, err, exception); + } +} + /** * nfs41_test_stateid - perform a TEST_STATEID operation * @@ -8610,9 +8979,7 @@ static int nfs41_test_stateid(struct nfs_server *server, int err; do { err = _nfs41_test_stateid(server, stateid, cred); - if (err != -NFS4ERR_DELAY) - break; - nfs4_handle_exception(server, err, &exception); + nfs4_handle_delay_or_session_error(server, err, &exception); } while (exception.retry); return err; } @@ -8657,7 +9024,7 @@ static const struct rpc_call_ops nfs41_free_stateid_ops = { }; static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, - nfs4_stateid *stateid, + const nfs4_stateid *stateid, struct rpc_cred *cred, bool privileged) { @@ -8687,7 +9054,7 @@ static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, msg.rpc_argp = &data->args; msg.rpc_resp = &data->res; - nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0); + nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 1); if (privileged) nfs4_set_sequence_privileged(&data->args.seq_args); @@ -8700,38 +9067,31 @@ static struct rpc_task *_nfs41_free_stateid(struct nfs_server *server, * @server: server / transport on which to perform the operation * @stateid: state ID to release * @cred: credential + * @is_recovery: set to true if this call needs to be privileged * - * Returns NFS_OK if the server freed "stateid". Otherwise a - * negative NFS4ERR value is returned. + * Note: this function is always asynchronous. */ static int nfs41_free_stateid(struct nfs_server *server, - nfs4_stateid *stateid, - struct rpc_cred *cred) + const nfs4_stateid *stateid, + struct rpc_cred *cred, + bool is_recovery) { struct rpc_task *task; - int ret; - task = _nfs41_free_stateid(server, stateid, cred, true); + task = _nfs41_free_stateid(server, stateid, cred, is_recovery); if (IS_ERR(task)) return PTR_ERR(task); - ret = rpc_wait_for_completion_task(task); - if (!ret) - ret = task->tk_status; rpc_put_task(task); - return ret; + return 0; } static void nfs41_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp) { - struct rpc_task *task; struct rpc_cred *cred = lsp->ls_state->owner->so_cred; - task = _nfs41_free_stateid(server, &lsp->ls_stateid, cred, false); + nfs41_free_stateid(server, &lsp->ls_stateid, cred, false); nfs4_free_lock_state(server, lsp); - if (IS_ERR(task)) - return; - rpc_put_task(task); } static bool nfs41_match_stateid(const nfs4_stateid *s1, @@ -8835,6 +9195,7 @@ static const struct nfs4_minor_version_ops nfs_v4_0_minor_ops = { .match_stateid = nfs4_match_stateid, .find_root_sec = nfs4_find_root_sec, .free_lock_state = nfs4_release_lockowner, + .test_and_free_expired = nfs40_test_and_free_expired_stateid, .alloc_seqid = nfs_alloc_seqid, .call_sync_ops = &nfs40_call_sync_ops, .reboot_recovery_ops = &nfs40_reboot_recovery_ops, @@ -8862,7 +9223,9 @@ static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = { .match_stateid = nfs41_match_stateid, .find_root_sec = nfs41_find_root_sec, .free_lock_state = nfs41_free_lock_state, + .test_and_free_expired = nfs41_test_and_free_expired_stateid, .alloc_seqid = nfs_alloc_no_seqid, + .session_trunk = nfs4_test_session_trunk, .call_sync_ops = &nfs41_call_sync_ops, .reboot_recovery_ops = &nfs41_reboot_recovery_ops, .nograce_recovery_ops = &nfs41_nograce_recovery_ops, @@ -8891,7 +9254,9 @@ static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = { .find_root_sec = nfs41_find_root_sec, .free_lock_state = nfs41_free_lock_state, .call_sync_ops = &nfs41_call_sync_ops, + .test_and_free_expired = nfs41_test_and_free_expired_stateid, .alloc_seqid = nfs_alloc_no_seqid, + .session_trunk = nfs4_test_session_trunk, .reboot_recovery_ops = &nfs41_reboot_recovery_ops, .nograce_recovery_ops = &nfs41_nograce_recovery_ops, .state_renewal_ops = &nfs41_state_renewal_ops, diff --git a/fs/nfs/nfs4session.h b/fs/nfs/nfs4session.h index f703b755351b..dae385500005 100644 --- a/fs/nfs/nfs4session.h +++ b/fs/nfs/nfs4session.h @@ -9,6 +9,7 @@ /* maximum number of slots to use */ #define NFS4_DEF_SLOT_TABLE_SIZE (64U) +#define NFS4_DEF_CB_SLOT_TABLE_SIZE (1U) #define NFS4_MAX_SLOT_TABLE (1024U) #define NFS4_NO_SLOT ((u32)-1) @@ -22,6 +23,7 @@ struct nfs4_slot { u32 slot_nr; u32 seq_nr; unsigned int interrupted : 1, + privileged : 1, seq_done : 1; }; diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index cada00aa5096..5f4281ec5f72 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -991,6 +991,8 @@ int nfs4_select_rw_stateid(struct nfs4_state *state, { int ret; + if (!nfs4_valid_open_stateid(state)) + return -EIO; if (cred != NULL) *cred = NULL; ret = nfs4_copy_lock_stateid(dst, state, lockowner); @@ -1303,6 +1305,8 @@ void nfs4_schedule_path_down_recovery(struct nfs_client *clp) static int nfs4_state_mark_reclaim_reboot(struct nfs_client *clp, struct nfs4_state *state) { + if (!nfs4_valid_open_stateid(state)) + return 0; set_bit(NFS_STATE_RECLAIM_REBOOT, &state->flags); /* Don't recover state that expired before the reboot */ if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags)) { @@ -1316,6 +1320,8 @@ static int nfs4_state_mark_reclaim_reboot(struct nfs_client *clp, struct nfs4_st int nfs4_state_mark_reclaim_nograce(struct nfs_client *clp, struct nfs4_state *state) { + if (!nfs4_valid_open_stateid(state)) + return 0; set_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags); clear_bit(NFS_STATE_RECLAIM_REBOOT, &state->flags); set_bit(NFS_OWNER_RECLAIM_NOGRACE, &state->owner->so_flags); @@ -1327,9 +1333,8 @@ int nfs4_schedule_stateid_recovery(const struct nfs_server *server, struct nfs4_ { struct nfs_client *clp = server->nfs_client; - if (!nfs4_valid_open_stateid(state)) + if (!nfs4_state_mark_reclaim_nograce(clp, state)) return -EBADF; - nfs4_state_mark_reclaim_nograce(clp, state); dprintk("%s: scheduling stateid recovery for server %s\n", __func__, clp->cl_hostname); nfs4_schedule_state_manager(clp); @@ -1337,6 +1342,35 @@ int nfs4_schedule_stateid_recovery(const struct nfs_server *server, struct nfs4_ } EXPORT_SYMBOL_GPL(nfs4_schedule_stateid_recovery); +static struct nfs4_lock_state * +nfs_state_find_lock_state_by_stateid(struct nfs4_state *state, + const nfs4_stateid *stateid) +{ + struct nfs4_lock_state *pos; + + list_for_each_entry(pos, &state->lock_states, ls_locks) { + if (!test_bit(NFS_LOCK_INITIALIZED, &pos->ls_flags)) + continue; + if (nfs4_stateid_match_other(&pos->ls_stateid, stateid)) + return pos; + } + return NULL; +} + +static bool nfs_state_lock_state_matches_stateid(struct nfs4_state *state, + const nfs4_stateid *stateid) +{ + bool found = false; + + if (test_bit(LK_STATE_IN_USE, &state->flags)) { + spin_lock(&state->state_lock); + if (nfs_state_find_lock_state_by_stateid(state, stateid)) + found = true; + spin_unlock(&state->state_lock); + } + return found; +} + void nfs_inode_find_state_and_recover(struct inode *inode, const nfs4_stateid *stateid) { @@ -1351,14 +1385,18 @@ void nfs_inode_find_state_and_recover(struct inode *inode, state = ctx->state; if (state == NULL) continue; - if (!test_bit(NFS_DELEGATED_STATE, &state->flags)) + if (nfs4_stateid_match_other(&state->stateid, stateid) && + nfs4_state_mark_reclaim_nograce(clp, state)) { + found = true; continue; - if (!nfs4_stateid_match(&state->stateid, stateid)) - continue; - nfs4_state_mark_reclaim_nograce(clp, state); - found = true; + } + if (nfs_state_lock_state_matches_stateid(state, stateid) && + nfs4_state_mark_reclaim_nograce(clp, state)) + found = true; } spin_unlock(&inode->i_lock); + + nfs_inode_find_delegation_state_and_recover(inode, stateid); if (found) nfs4_schedule_state_manager(clp); } @@ -1498,6 +1536,9 @@ restart: __func__, status); case -ENOENT: case -ENOMEM: + case -EACCES: + case -EROFS: + case -EIO: case -ESTALE: /* Open state on this file cannot be recovered */ nfs4_state_mark_recovery_failed(state, status); @@ -1656,15 +1697,9 @@ static void nfs4_state_end_reclaim_reboot(struct nfs_client *clp) put_rpccred(cred); } -static void nfs_delegation_clear_all(struct nfs_client *clp) -{ - nfs_delegation_mark_reclaim(clp); - nfs_delegation_reap_unclaimed(clp); -} - static void nfs4_state_start_reclaim_nograce(struct nfs_client *clp) { - nfs_delegation_clear_all(clp); + nfs_mark_test_expired_all_delegations(clp); nfs4_state_mark_reclaim_helper(clp, nfs4_state_mark_reclaim_nograce); } @@ -2195,7 +2230,7 @@ static void nfs41_handle_all_state_revoked(struct nfs_client *clp) static void nfs41_handle_some_state_revoked(struct nfs_client *clp) { - nfs4_state_mark_reclaim_helper(clp, nfs4_state_mark_reclaim_nograce); + nfs4_state_start_reclaim_nograce(clp); nfs4_schedule_state_manager(clp); dprintk("%s: state revoked on server %s\n", __func__, clp->cl_hostname); @@ -2227,13 +2262,22 @@ static void nfs41_handle_cb_path_down(struct nfs_client *clp) nfs4_schedule_state_manager(clp); } -void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags) +void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags, + bool recovery) { if (!flags) return; dprintk("%s: \"%s\" (client ID %llx) flags=0x%08x\n", __func__, clp->cl_hostname, clp->cl_clientid, flags); + /* + * If we're called from the state manager thread, then assume we're + * already handling the RECLAIM_NEEDED and/or STATE_REVOKED. + * Those flags are expected to remain set until we're done + * recovering (see RFC5661, section 18.46.3). + */ + if (recovery) + goto out_recovery; if (flags & SEQ4_STATUS_RESTART_RECLAIM_NEEDED) nfs41_handle_server_reboot(clp); @@ -2246,6 +2290,7 @@ void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags) nfs4_schedule_lease_moved_recovery(clp); if (flags & SEQ4_STATUS_RECALLABLE_STATE_REVOKED) nfs41_handle_recallable_state_revoked(clp); +out_recovery: if (flags & SEQ4_STATUS_BACKCHANNEL_FAULT) nfs41_handle_backchannel_fault(clp); else if (flags & (SEQ4_STATUS_CB_PATH_DOWN | @@ -2410,6 +2455,13 @@ static void nfs4_state_manager(struct nfs_client *clp) nfs4_state_end_reclaim_reboot(clp); } + /* Detect expired delegations... */ + if (test_and_clear_bit(NFS4CLNT_DELEGATION_EXPIRED, &clp->cl_state)) { + section = "detect expired delegations"; + nfs_reap_expired_delegations(clp); + continue; + } + /* Now recover expired state... */ if (test_and_clear_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state)) { section = "reclaim nograce"; diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 7bd3a5c09d31..fc89e5ed07ee 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -1850,7 +1850,7 @@ static void encode_create_session(struct xdr_stream *xdr, *p++ = cpu_to_be32(RPC_AUTH_UNIX); /* auth_sys */ /* authsys_parms rfc1831 */ - *p++ = cpu_to_be32(nn->boot_time.tv_nsec); /* stamp */ + *p++ = cpu_to_be32(ktime_to_ns(nn->boot_time)); /* stamp */ p = xdr_encode_array(p, clnt->cl_nodename, clnt->cl_nodelen); *p++ = cpu_to_be32(0); /* UID */ *p++ = cpu_to_be32(0); /* GID */ @@ -4725,34 +4725,37 @@ static int decode_getfattr(struct xdr_stream *xdr, struct nfs_fattr *fattr, } /* - * Decode potentially multiple layout types. Currently we only support - * one layout driver per file system. + * Decode potentially multiple layout types. */ -static int decode_first_pnfs_layout_type(struct xdr_stream *xdr, - uint32_t *layouttype) +static int decode_pnfs_layout_types(struct xdr_stream *xdr, + struct nfs_fsinfo *fsinfo) { __be32 *p; - int num; + uint32_t i; p = xdr_inline_decode(xdr, 4); if (unlikely(!p)) goto out_overflow; - num = be32_to_cpup(p); + fsinfo->nlayouttypes = be32_to_cpup(p); /* pNFS is not supported by the underlying file system */ - if (num == 0) { - *layouttype = 0; + if (fsinfo->nlayouttypes == 0) return 0; - } - if (num > 1) - printk(KERN_INFO "NFS: %s: Warning: Multiple pNFS layout " - "drivers per filesystem not supported\n", __func__); /* Decode and set first layout type, move xdr->p past unused types */ - p = xdr_inline_decode(xdr, num * 4); + p = xdr_inline_decode(xdr, fsinfo->nlayouttypes * 4); if (unlikely(!p)) goto out_overflow; - *layouttype = be32_to_cpup(p); + + /* If we get too many, then just cap it at the max */ + if (fsinfo->nlayouttypes > NFS_MAX_LAYOUT_TYPES) { + printk(KERN_INFO "NFS: %s: Warning: Too many (%u) pNFS layout types\n", + __func__, fsinfo->nlayouttypes); + fsinfo->nlayouttypes = NFS_MAX_LAYOUT_TYPES; + } + + for(i = 0; i < fsinfo->nlayouttypes; ++i) + fsinfo->layouttype[i] = be32_to_cpup(p++); return 0; out_overflow: print_overflow_msg(__func__, xdr); @@ -4764,7 +4767,7 @@ out_overflow: * Note we must ensure that layouttype is set in any non-error case. */ static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap, - uint32_t *layouttype) + struct nfs_fsinfo *fsinfo) { int status = 0; @@ -4772,10 +4775,9 @@ static int decode_attr_pnfstype(struct xdr_stream *xdr, uint32_t *bitmap, if (unlikely(bitmap[1] & (FATTR4_WORD1_FS_LAYOUT_TYPES - 1U))) return -EIO; if (bitmap[1] & FATTR4_WORD1_FS_LAYOUT_TYPES) { - status = decode_first_pnfs_layout_type(xdr, layouttype); + status = decode_pnfs_layout_types(xdr, fsinfo); bitmap[1] &= ~FATTR4_WORD1_FS_LAYOUT_TYPES; - } else - *layouttype = 0; + } return status; } @@ -4856,7 +4858,7 @@ static int decode_fsinfo(struct xdr_stream *xdr, struct nfs_fsinfo *fsinfo) status = decode_attr_time_delta(xdr, bitmap, &fsinfo->time_delta); if (status != 0) goto xdr_error; - status = decode_attr_pnfstype(xdr, bitmap, &fsinfo->layouttype); + status = decode_attr_pnfstype(xdr, bitmap, fsinfo); if (status != 0) goto xdr_error; diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 2c93a85eda51..56b2d96f9103 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -30,6 +30,7 @@ #include <linux/nfs_fs.h> #include <linux/nfs_page.h> #include <linux/module.h> +#include <linux/sort.h> #include "internal.h" #include "pnfs.h" #include "iostat.h" @@ -99,35 +100,79 @@ unset_pnfs_layoutdriver(struct nfs_server *nfss) } /* + * When the server sends a list of layout types, we choose one in the order + * given in the list below. + * + * FIXME: should this list be configurable in some fashion? module param? + * mount option? something else? + */ +static const u32 ld_prefs[] = { + LAYOUT_SCSI, + LAYOUT_BLOCK_VOLUME, + LAYOUT_OSD2_OBJECTS, + LAYOUT_FLEX_FILES, + LAYOUT_NFSV4_1_FILES, + 0 +}; + +static int +ld_cmp(const void *e1, const void *e2) +{ + u32 ld1 = *((u32 *)e1); + u32 ld2 = *((u32 *)e2); + int i; + + for (i = 0; ld_prefs[i] != 0; i++) { + if (ld1 == ld_prefs[i]) + return -1; + + if (ld2 == ld_prefs[i]) + return 1; + } + return 0; +} + +/* * Try to set the server's pnfs module to the pnfs layout type specified by id. * Currently only one pNFS layout driver per filesystem is supported. * - * @id layout type. Zero (illegal layout type) indicates pNFS not in use. + * @ids array of layout types supported by MDS. */ void set_pnfs_layoutdriver(struct nfs_server *server, const struct nfs_fh *mntfh, - u32 id) + struct nfs_fsinfo *fsinfo) { struct pnfs_layoutdriver_type *ld_type = NULL; + u32 id; + int i; - if (id == 0) - goto out_no_driver; if (!(server->nfs_client->cl_exchange_flags & (EXCHGID4_FLAG_USE_NON_PNFS | EXCHGID4_FLAG_USE_PNFS_MDS))) { - printk(KERN_ERR "NFS: %s: id %u cl_exchange_flags 0x%x\n", - __func__, id, server->nfs_client->cl_exchange_flags); + printk(KERN_ERR "NFS: %s: cl_exchange_flags 0x%x\n", + __func__, server->nfs_client->cl_exchange_flags); goto out_no_driver; } - ld_type = find_pnfs_driver(id); - if (!ld_type) { - request_module("%s-%u", LAYOUT_NFSV4_1_MODULE_PREFIX, id); + + sort(fsinfo->layouttype, fsinfo->nlayouttypes, + sizeof(*fsinfo->layouttype), ld_cmp, NULL); + + for (i = 0; i < fsinfo->nlayouttypes; i++) { + id = fsinfo->layouttype[i]; ld_type = find_pnfs_driver(id); if (!ld_type) { - dprintk("%s: No pNFS module found for %u.\n", - __func__, id); - goto out_no_driver; + request_module("%s-%u", LAYOUT_NFSV4_1_MODULE_PREFIX, + id); + ld_type = find_pnfs_driver(id); } + if (ld_type) + break; + } + + if (!ld_type) { + dprintk("%s: No pNFS module found!\n", __func__); + goto out_no_driver; } + server->pnfs_curr_ld = ld_type; if (ld_type->set_layoutdriver && ld_type->set_layoutdriver(server, mntfh)) { @@ -2185,10 +2230,8 @@ static void pnfs_ld_handle_read_error(struct nfs_pgio_header *hdr) */ void pnfs_ld_read_done(struct nfs_pgio_header *hdr) { - if (likely(!hdr->pnfs_error)) { - __nfs4_read_done_cb(hdr); + if (likely(!hdr->pnfs_error)) hdr->mds_ops->rpc_call_done(&hdr->task, hdr); - } trace_nfs4_pnfs_read(hdr, hdr->pnfs_error); if (unlikely(hdr->pnfs_error)) pnfs_ld_handle_read_error(hdr); diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h index 31d99b2927b0..5c295512c967 100644 --- a/fs/nfs/pnfs.h +++ b/fs/nfs/pnfs.h @@ -236,7 +236,7 @@ void pnfs_get_layout_hdr(struct pnfs_layout_hdr *lo); void pnfs_put_lseg(struct pnfs_layout_segment *lseg); void pnfs_put_lseg_locked(struct pnfs_layout_segment *lseg); -void set_pnfs_layoutdriver(struct nfs_server *, const struct nfs_fh *, u32); +void set_pnfs_layoutdriver(struct nfs_server *, const struct nfs_fh *, struct nfs_fsinfo *); void unset_pnfs_layoutdriver(struct nfs_server *); void pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *, struct nfs_page *); int pnfs_generic_pg_readpages(struct nfs_pageio_descriptor *desc); @@ -657,7 +657,8 @@ pnfs_wait_on_layoutreturn(struct inode *ino, struct rpc_task *task) } static inline void set_pnfs_layoutdriver(struct nfs_server *s, - const struct nfs_fh *mntfh, u32 id) + const struct nfs_fh *mntfh, + struct nfs_fsinfo *fsinfo) { } diff --git a/fs/nfs/pnfs_nfs.c b/fs/nfs/pnfs_nfs.c index f3468b57a32a..53b4705abcc7 100644 --- a/fs/nfs/pnfs_nfs.c +++ b/fs/nfs/pnfs_nfs.c @@ -690,13 +690,50 @@ static int _nfs4_pnfs_v4_ds_connect(struct nfs_server *mds_srv, dprintk("%s: DS %s: trying address %s\n", __func__, ds->ds_remotestr, da->da_remotestr); - clp = nfs4_set_ds_client(mds_srv, - (struct sockaddr *)&da->da_addr, - da->da_addrlen, IPPROTO_TCP, - timeo, retrans, minor_version, - au_flavor); - if (!IS_ERR(clp)) - break; + if (!IS_ERR(clp) && clp->cl_mvops->session_trunk) { + struct xprt_create xprt_args = { + .ident = XPRT_TRANSPORT_TCP, + .net = clp->cl_net, + .dstaddr = (struct sockaddr *)&da->da_addr, + .addrlen = da->da_addrlen, + .servername = clp->cl_hostname, + }; + struct nfs4_add_xprt_data xprtdata = { + .clp = clp, + .cred = nfs4_get_clid_cred(clp), + }; + struct rpc_add_xprt_test rpcdata = { + .add_xprt_test = clp->cl_mvops->session_trunk, + .data = &xprtdata, + }; + + /** + * Test this address for session trunking and + * add as an alias + */ + rpc_clnt_add_xprt(clp->cl_rpcclient, &xprt_args, + rpc_clnt_setup_test_and_add_xprt, + &rpcdata); + if (xprtdata.cred) + put_rpccred(xprtdata.cred); + } else { + clp = nfs4_set_ds_client(mds_srv, + (struct sockaddr *)&da->da_addr, + da->da_addrlen, IPPROTO_TCP, + timeo, retrans, minor_version, + au_flavor); + if (IS_ERR(clp)) + continue; + + status = nfs4_init_ds_session(clp, + mds_srv->nfs_client->cl_lease_time); + if (status) { + nfs_put_client(clp); + clp = ERR_PTR(-EIO); + continue; + } + + } } if (IS_ERR(clp)) { @@ -704,18 +741,11 @@ static int _nfs4_pnfs_v4_ds_connect(struct nfs_server *mds_srv, goto out; } - status = nfs4_init_ds_session(clp, mds_srv->nfs_client->cl_lease_time); - if (status) - goto out_put; - smp_wmb(); ds->ds_clp = clp; dprintk("%s [new] addr: %s\n", __func__, ds->ds_remotestr); out: return status; -out_put: - nfs_put_client(clp); - goto out; } /* diff --git a/fs/nfs/super.c b/fs/nfs/super.c index d39601381adf..001796bcd6c8 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -2848,19 +2848,23 @@ out_invalid_transport_udp: * NFS client for backwards compatibility */ unsigned int nfs_callback_set_tcpport; +unsigned short nfs_callback_nr_threads; /* Default cache timeout is 10 minutes */ unsigned int nfs_idmap_cache_timeout = 600; /* Turn off NFSv4 uid/gid mapping when using AUTH_SYS */ bool nfs4_disable_idmapping = true; unsigned short max_session_slots = NFS4_DEF_SLOT_TABLE_SIZE; +unsigned short max_session_cb_slots = NFS4_DEF_CB_SLOT_TABLE_SIZE; unsigned short send_implementation_id = 1; char nfs4_client_id_uniquifier[NFS4_CLIENT_ID_UNIQ_LEN] = ""; bool recover_lost_locks = false; +EXPORT_SYMBOL_GPL(nfs_callback_nr_threads); EXPORT_SYMBOL_GPL(nfs_callback_set_tcpport); EXPORT_SYMBOL_GPL(nfs_idmap_cache_timeout); EXPORT_SYMBOL_GPL(nfs4_disable_idmapping); EXPORT_SYMBOL_GPL(max_session_slots); +EXPORT_SYMBOL_GPL(max_session_cb_slots); EXPORT_SYMBOL_GPL(send_implementation_id); EXPORT_SYMBOL_GPL(nfs4_client_id_uniquifier); EXPORT_SYMBOL_GPL(recover_lost_locks); @@ -2887,6 +2891,9 @@ static const struct kernel_param_ops param_ops_portnr = { #define param_check_portnr(name, p) __param_check(name, p, unsigned int); module_param_named(callback_tcpport, nfs_callback_set_tcpport, portnr, 0644); +module_param_named(callback_nr_threads, nfs_callback_nr_threads, ushort, 0644); +MODULE_PARM_DESC(callback_nr_threads, "Number of threads that will be " + "assigned to the NFSv4 callback channels."); module_param(nfs_idmap_cache_timeout, int, 0644); module_param(nfs4_disable_idmapping, bool, 0644); module_param_string(nfs4_unique_id, nfs4_client_id_uniquifier, @@ -2896,6 +2903,9 @@ MODULE_PARM_DESC(nfs4_disable_idmapping, module_param(max_session_slots, ushort, 0644); MODULE_PARM_DESC(max_session_slots, "Maximum number of outstanding NFSv4.1 " "requests the client will negotiate"); +module_param(max_session_cb_slots, ushort, 0644); +MODULE_PARM_DESC(max_session_slots, "Maximum number of parallel NFSv4.1 " + "callbacks the client will process for a given server"); module_param(send_implementation_id, ushort, 0644); MODULE_PARM_DESC(send_implementation_id, "Send implementation ID with NFSv4.1 exchange_id"); |