From ddeaa6379d50a530f9f57b3d12f7940e079b052c Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Sat, 15 Oct 2016 13:59:03 -0700 Subject: sunrpc & nfs: Add and use dprintk_cont macros Allow line continuations to work properly with KERN_CONT. Signed-off-by: Joe Perches [Anna: Add fallback dprintk_cont() for when CONFIG_SUNRPC_DEBUG=n] Signed-off-by: Anna Schumaker --- fs/nfs/write.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/write.c b/fs/nfs/write.c index b00d53d13d47..ad4219a41f25 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -1787,7 +1787,7 @@ static void nfs_commit_release_pages(struct nfs_commit_data *data) if (status < 0) { nfs_context_set_write_error(req->wb_context, status); nfs_inode_remove_request(req); - dprintk(", error = %d\n", status); + dprintk_cont(", error = %d\n", status); goto next; } @@ -1796,11 +1796,11 @@ static void nfs_commit_release_pages(struct nfs_commit_data *data) if (!nfs_write_verifier_cmp(&req->wb_verf, &data->verf.verifier)) { /* We have a match */ nfs_inode_remove_request(req); - dprintk(" OK\n"); + dprintk_cont(" OK\n"); goto next; } /* We have a mismatch. Write the page again */ - dprintk(" mismatch\n"); + dprintk_cont(" mismatch\n"); nfs_mark_request_dirty(req); set_bit(NFS_CONTEXT_RESEND_WRITES, &req->wb_context->flags); next: -- cgit v1.2.3 From 6f6e3c09c0dde7fbaf36f02ffa97bbb13fecd637 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Fri, 13 Jan 2017 11:04:27 +1100 Subject: NFS: tidy up nfs_show_mountd_netid This function is a bit clumsy, incorrectly producing ",mountproto=" if mountd_protocol is 0 and !showdefaults, and duplicating the code for reporting "auto". Tidy it up so that it only makes a single seq_printf() call, and more obviously does the right thing. Fixes: ee671b016fbf ("NFS: convert proto= option to use netids rather than a protoname") Signed-off-by: NeilBrown Signed-off-by: Anna Schumaker --- fs/nfs/super.c | 21 +++++++-------------- 1 file changed, 7 insertions(+), 14 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 6bca17883b93..54e0f9f2dd94 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -531,39 +531,32 @@ static void nfs_show_mountd_netid(struct seq_file *m, struct nfs_server *nfss, int showdefaults) { struct sockaddr *sap = (struct sockaddr *) &nfss->mountd_address; + char *proto = NULL; - seq_printf(m, ",mountproto="); switch (sap->sa_family) { case AF_INET: switch (nfss->mountd_protocol) { case IPPROTO_UDP: - seq_printf(m, RPCBIND_NETID_UDP); + proto = RPCBIND_NETID_UDP; break; case IPPROTO_TCP: - seq_printf(m, RPCBIND_NETID_TCP); + proto = RPCBIND_NETID_TCP; break; - default: - if (showdefaults) - seq_printf(m, "auto"); } break; case AF_INET6: switch (nfss->mountd_protocol) { case IPPROTO_UDP: - seq_printf(m, RPCBIND_NETID_UDP6); + proto = RPCBIND_NETID_UDP6; break; case IPPROTO_TCP: - seq_printf(m, RPCBIND_NETID_TCP6); + proto = RPCBIND_NETID_TCP6; break; - default: - if (showdefaults) - seq_printf(m, "auto"); } break; - default: - if (showdefaults) - seq_printf(m, "auto"); } + if (proto || showdefaults) + seq_printf(m, ",mountproto=%s", proto ?: "auto"); } static void nfs_show_mountd_options(struct seq_file *m, struct nfs_server *nfss, -- cgit v1.2.3 From efc6f4aa742d7e8a67e44d11ab18b1c865880b4c Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Mon, 9 Jan 2017 15:14:33 -0500 Subject: NFS: Move nfs4_get_session() into nfs4_session.h This puts session related functions together in the same space. I only keep one version of this function, since this variable will always be NULL when using NFS v4.0. Signed-off-by: Anna Schumaker --- fs/nfs/nfs42proc.c | 1 + fs/nfs/nfs4_fs.h | 10 ---------- fs/nfs/nfs4session.h | 5 +++++ 3 files changed, 6 insertions(+), 10 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c index d12ff9385f49..b752d85ad8c6 100644 --- a/fs/nfs/nfs42proc.c +++ b/fs/nfs/nfs42proc.c @@ -12,6 +12,7 @@ #include "nfs42.h" #include "iostat.h" #include "pnfs.h" +#include "nfs4session.h" #include "internal.h" #define NFSDBG_FACILITY NFSDBG_PROC diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 665165833660..04ffea093d56 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -273,11 +273,6 @@ extern int nfs4_set_rw_stateid(nfs4_stateid *stateid, fmode_t fmode); #if defined(CONFIG_NFS_V4_1) -static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server) -{ - return server->nfs_client->cl_session; -} - extern int nfs41_setup_sequence(struct nfs4_session *session, struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, struct rpc_task *task); @@ -357,11 +352,6 @@ nfs4_state_protect_write(struct nfs_client *clp, struct rpc_clnt **clntp, hdr->args.stable = NFS_FILE_SYNC; } #else /* CONFIG_NFS_v4_1 */ -static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server) -{ - return NULL; -} - static inline bool is_ds_only_client(struct nfs_client *clp) { diff --git a/fs/nfs/nfs4session.h b/fs/nfs/nfs4session.h index dae385500005..22cb55015b2b 100644 --- a/fs/nfs/nfs4session.h +++ b/fs/nfs/nfs4session.h @@ -103,6 +103,11 @@ static inline bool nfs4_test_locked_slot(const struct nfs4_slot_table *tbl, return !!test_bit(slotid, tbl->used_slots); } +static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server) +{ + return server->nfs_client->cl_session; +} + #if defined(CONFIG_NFS_V4_1) extern void nfs41_set_target_slotid(struct nfs4_slot_table *tbl, u32 target_highest_slotid); -- cgit v1.2.3 From 172d9de15a0da9b6d52d2bae21a362689d82d35a Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Thu, 14 May 2015 10:56:10 -0400 Subject: NFS: Change nfs4_get_session() to take an nfs_client structure pNFS only has access to the nfs_client structure, and not the nfs_server, so we need to make this change so the function can be used by pNFS as well. Signed-off-by: Anna Schumaker --- fs/nfs/nfs42proc.c | 5 ++--- fs/nfs/nfs4proc.c | 10 +++++----- fs/nfs/nfs4session.h | 4 ++-- 3 files changed, 9 insertions(+), 10 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c index b752d85ad8c6..b03010eebafd 100644 --- a/fs/nfs/nfs42proc.c +++ b/fs/nfs/nfs42proc.c @@ -332,9 +332,8 @@ nfs42_layoutstat_prepare(struct rpc_task *task, void *calldata) } nfs4_stateid_copy(&data->args.stateid, &lo->plh_stateid); spin_unlock(&inode->i_lock); - nfs41_setup_sequence(nfs4_get_session(server), &data->args.seq_args, - &data->res.seq_res, task); - + nfs41_setup_sequence(nfs4_get_session(server->nfs_client), + &data->args.seq_args, &data->res.seq_res, task); } static void diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 0a0eaecf9676..46cb55a81dbf 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -952,7 +952,7 @@ static int nfs4_setup_sequence(const struct nfs_server *server, struct nfs4_sequence_res *res, struct rpc_task *task) { - struct nfs4_session *session = nfs4_get_session(server); + struct nfs4_session *session = nfs4_get_session(server->nfs_client); int ret = 0; if (!session) @@ -972,7 +972,7 @@ static int nfs4_setup_sequence(const struct nfs_server *server, static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) { struct nfs4_call_sync_data *data = calldata; - struct nfs4_session *session = nfs4_get_session(data->seq_server); + struct nfs4_session *session = nfs4_get_session(data->seq_server->nfs_client); dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); @@ -8397,7 +8397,7 @@ nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) { struct nfs4_layoutget *lgp = calldata; struct nfs_server *server = NFS_SERVER(lgp->args.inode); - struct nfs4_session *session = nfs4_get_session(server); + struct nfs4_session *session = nfs4_get_session(server->nfs_client); dprintk("--> %s\n", __func__); nfs41_setup_sequence(session, &lgp->args.seq_args, @@ -8794,7 +8794,7 @@ static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) { struct nfs4_layoutcommit_data *data = calldata; struct nfs_server *server = NFS_SERVER(data->args.inode); - struct nfs4_session *session = nfs4_get_session(server); + struct nfs4_session *session = nfs4_get_session(server->nfs_client); nfs41_setup_sequence(session, &data->args.seq_args, @@ -9120,7 +9120,7 @@ struct nfs_free_stateid_data { static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata) { struct nfs_free_stateid_data *data = calldata; - nfs41_setup_sequence(nfs4_get_session(data->server), + nfs41_setup_sequence(nfs4_get_session(data->server->nfs_client), &data->args.seq_args, &data->res.seq_res, task); diff --git a/fs/nfs/nfs4session.h b/fs/nfs/nfs4session.h index 22cb55015b2b..f6378d95b1b5 100644 --- a/fs/nfs/nfs4session.h +++ b/fs/nfs/nfs4session.h @@ -103,9 +103,9 @@ static inline bool nfs4_test_locked_slot(const struct nfs4_slot_table *tbl, return !!test_bit(slotid, tbl->used_slots); } -static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server) +static inline struct nfs4_session *nfs4_get_session(const struct nfs_client *clp) { - return server->nfs_client->cl_session; + return clp->cl_session; } #if defined(CONFIG_NFS_V4_1) -- cgit v1.2.3 From 42e1cca7e91e1a7502694cfd18857ed243f54174 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Mon, 9 Jan 2017 15:48:22 -0500 Subject: NFS: Change nfs4_setup_sequence() to take an nfs_client structure I want to have all callers use this function, rather than calling the NFS v4.0 and v4.1 versions directly. This includes pNFS, which only has access to the nfs_client structure in some places. Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 31 +++++++++++++++---------------- 1 file changed, 15 insertions(+), 16 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 46cb55a81dbf..f62d58cb3014 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -947,16 +947,16 @@ out_sleep: } EXPORT_SYMBOL_GPL(nfs41_setup_sequence); -static int nfs4_setup_sequence(const struct nfs_server *server, +static int nfs4_setup_sequence(const struct nfs_client *client, struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, struct rpc_task *task) { - struct nfs4_session *session = nfs4_get_session(server->nfs_client); + struct nfs4_session *session = nfs4_get_session(client); int ret = 0; if (!session) - return nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, + return nfs40_setup_sequence(client->cl_slot_tbl, args, res, task); dprintk("--> %s clp %p session %p sr_slot %u\n", @@ -993,13 +993,12 @@ static const struct rpc_call_ops nfs41_call_sync_ops = { #else /* !CONFIG_NFS_V4_1 */ -static int nfs4_setup_sequence(const struct nfs_server *server, +static int nfs4_setup_sequence(const struct nfs_client *client, struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, struct rpc_task *task) { - return nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, - args, res, task); + return nfs40_setup_sequence(client->cl_slot_tbl, args, res, task); } static int nfs4_sequence_process(struct rpc_task *task, struct nfs4_sequence_res *res) @@ -1025,7 +1024,7 @@ EXPORT_SYMBOL_GPL(nfs4_sequence_done); static void nfs40_call_sync_prepare(struct rpc_task *task, void *calldata) { struct nfs4_call_sync_data *data = calldata; - nfs4_setup_sequence(data->seq_server, + nfs4_setup_sequence(data->seq_server->nfs_client, data->seq_args, data->seq_res, task); } @@ -2172,7 +2171,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata) nfs_copy_fh(&data->o_res.fh, data->o_arg.fh); } data->timestamp = jiffies; - if (nfs4_setup_sequence(data->o_arg.server, + if (nfs4_setup_sequence(data->o_arg.server->nfs_client, &data->o_arg.seq_args, &data->o_res.seq_res, task) != 0) @@ -3234,7 +3233,7 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data) else if (calldata->arg.bitmask == NULL) calldata->res.fattr = NULL; calldata->timestamp = jiffies; - if (nfs4_setup_sequence(NFS_SERVER(inode), + if (nfs4_setup_sequence(NFS_SERVER(inode)->nfs_client, &calldata->arg.seq_args, &calldata->res.seq_res, task) != 0) @@ -4114,7 +4113,7 @@ static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) { - nfs4_setup_sequence(NFS_SB(data->dentry->d_sb), + nfs4_setup_sequence(NFS_SB(data->dentry->d_sb)->nfs_client, &data->args.seq_args, &data->res.seq_res, task); @@ -4148,7 +4147,7 @@ static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) static void nfs4_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data) { - nfs4_setup_sequence(NFS_SERVER(data->old_dir), + nfs4_setup_sequence(NFS_SERVER(data->old_dir)->nfs_client, &data->args.seq_args, &data->res.seq_res, task); @@ -4723,7 +4722,7 @@ static void nfs4_proc_read_setup(struct nfs_pgio_header *hdr, static int nfs4_proc_pgio_rpc_prepare(struct rpc_task *task, struct nfs_pgio_header *hdr) { - if (nfs4_setup_sequence(NFS_SERVER(hdr->inode), + if (nfs4_setup_sequence(NFS_SERVER(hdr->inode)->nfs_client, &hdr->args.seq_args, &hdr->res.seq_res, task)) @@ -4822,7 +4821,7 @@ static void nfs4_proc_write_setup(struct nfs_pgio_header *hdr, static void nfs4_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data) { - nfs4_setup_sequence(NFS_SERVER(data->inode), + nfs4_setup_sequence(NFS_SERVER(data->inode)->nfs_client, &data->args.seq_args, &data->res.seq_res, task); @@ -5747,7 +5746,7 @@ static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data) if (!d_data->lr.roc && nfs4_wait_on_layoutreturn(d_data->inode, task)) return; - nfs4_setup_sequence(d_data->res.server, + nfs4_setup_sequence(d_data->res.server->nfs_client, &d_data->args.seq_args, &d_data->res.seq_res, task); @@ -5989,7 +5988,7 @@ static void nfs4_locku_prepare(struct rpc_task *task, void *data) goto out_no_action; } calldata->timestamp = jiffies; - if (nfs4_setup_sequence(calldata->server, + if (nfs4_setup_sequence(calldata->server->nfs_client, &calldata->arg.seq_args, &calldata->res.seq_res, task) != 0) @@ -6174,7 +6173,7 @@ static void nfs4_lock_prepare(struct rpc_task *task, void *calldata) goto out_release_open_seqid; } data->timestamp = jiffies; - if (nfs4_setup_sequence(data->server, + if (nfs4_setup_sequence(data->server->nfs_client, &data->arg.seq_args, &data->res.seq_res, task) == 0) -- cgit v1.2.3 From 6de7e12f53a154d35d9aceae718b764ada23e430 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Mon, 9 Jan 2017 16:51:52 -0500 Subject: NFS: Use nfs4_setup_sequence() everywhere This does the right thing depending on if we have a session, rather than needing to handle this manually in multiple places. Signed-off-by: Anna Schumaker --- fs/nfs/filelayout/filelayout.c | 6 ++--- fs/nfs/flexfilelayout/flexfilelayout.c | 40 ++++++++++------------------------ fs/nfs/nfs42proc.c | 4 ++-- fs/nfs/nfs4_fs.h | 5 +---- fs/nfs/nfs4proc.c | 30 ++++++++++++------------- 5 files changed, 33 insertions(+), 52 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/filelayout/filelayout.c b/fs/nfs/filelayout/filelayout.c index a3fc48ba4931..7aff350f15b1 100644 --- a/fs/nfs/filelayout/filelayout.c +++ b/fs/nfs/filelayout/filelayout.c @@ -305,7 +305,7 @@ static void filelayout_read_prepare(struct rpc_task *task, void *data) } hdr->pgio_done_cb = filelayout_read_done_cb; - if (nfs41_setup_sequence(hdr->ds_clp->cl_session, + if (nfs4_setup_sequence(hdr->ds_clp, &hdr->args.seq_args, &hdr->res.seq_res, task)) @@ -403,7 +403,7 @@ static void filelayout_write_prepare(struct rpc_task *task, void *data) rpc_exit(task, 0); return; } - if (nfs41_setup_sequence(hdr->ds_clp->cl_session, + if (nfs4_setup_sequence(hdr->ds_clp, &hdr->args.seq_args, &hdr->res.seq_res, task)) @@ -438,7 +438,7 @@ static void filelayout_commit_prepare(struct rpc_task *task, void *data) { struct nfs_commit_data *wdata = data; - nfs41_setup_sequence(wdata->ds_clp->cl_session, + nfs4_setup_sequence(wdata->ds_clp, &wdata->args.seq_args, &wdata->res.seq_res, task); diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c index 0ca4af8cca5d..cc9064974104 100644 --- a/fs/nfs/flexfilelayout/flexfilelayout.c +++ b/fs/nfs/flexfilelayout/flexfilelayout.c @@ -1384,30 +1384,14 @@ static void ff_layout_read_prepare_v3(struct rpc_task *task, void *data) rpc_call_start(task); } -static int ff_layout_setup_sequence(struct nfs_client *ds_clp, - struct nfs4_sequence_args *args, - struct nfs4_sequence_res *res, - struct rpc_task *task) -{ - if (ds_clp->cl_session) - return nfs41_setup_sequence(ds_clp->cl_session, - args, - res, - task); - return nfs40_setup_sequence(ds_clp->cl_slot_tbl, - args, - res, - task); -} - static void ff_layout_read_prepare_v4(struct rpc_task *task, void *data) { struct nfs_pgio_header *hdr = data; - if (ff_layout_setup_sequence(hdr->ds_clp, - &hdr->args.seq_args, - &hdr->res.seq_res, - task)) + if (nfs4_setup_sequence(hdr->ds_clp, + &hdr->args.seq_args, + &hdr->res.seq_res, + task)) return; if (ff_layout_read_prepare_common(task, hdr)) @@ -1578,10 +1562,10 @@ static void ff_layout_write_prepare_v4(struct rpc_task *task, void *data) { struct nfs_pgio_header *hdr = data; - if (ff_layout_setup_sequence(hdr->ds_clp, - &hdr->args.seq_args, - &hdr->res.seq_res, - task)) + if (nfs4_setup_sequence(hdr->ds_clp, + &hdr->args.seq_args, + &hdr->res.seq_res, + task)) return; if (ff_layout_write_prepare_common(task, hdr)) @@ -1667,10 +1651,10 @@ static void ff_layout_commit_prepare_v4(struct rpc_task *task, void *data) { struct nfs_commit_data *wdata = data; - if (ff_layout_setup_sequence(wdata->ds_clp, - &wdata->args.seq_args, - &wdata->res.seq_res, - task)) + if (nfs4_setup_sequence(wdata->ds_clp, + &wdata->args.seq_args, + &wdata->res.seq_res, + task)) return; ff_layout_commit_prepare_common(task, data); } diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c index b03010eebafd..98cf58341066 100644 --- a/fs/nfs/nfs42proc.c +++ b/fs/nfs/nfs42proc.c @@ -332,8 +332,8 @@ nfs42_layoutstat_prepare(struct rpc_task *task, void *calldata) } nfs4_stateid_copy(&data->args.stateid, &lo->plh_stateid); spin_unlock(&inode->i_lock); - nfs41_setup_sequence(nfs4_get_session(server->nfs_client), - &data->args.seq_args, &data->res.seq_res, task); + nfs4_setup_sequence(server->nfs_client, &data->args.seq_args, + &data->res.seq_res, task); } static void diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 04ffea093d56..af285cc27ccf 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -273,9 +273,6 @@ extern int nfs4_set_rw_stateid(nfs4_stateid *stateid, fmode_t fmode); #if defined(CONFIG_NFS_V4_1) -extern int nfs41_setup_sequence(struct nfs4_session *session, - struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, - struct rpc_task *task); extern int nfs41_sequence_done(struct rpc_task *, struct nfs4_sequence_res *); extern int nfs4_proc_create_session(struct nfs_client *, struct rpc_cred *); extern int nfs4_proc_destroy_session(struct nfs4_session *, struct rpc_cred *); @@ -456,7 +453,7 @@ extern void nfs_increment_open_seqid(int status, struct nfs_seqid *seqid); extern void nfs_increment_lock_seqid(int status, struct nfs_seqid *seqid); extern void nfs_release_seqid(struct nfs_seqid *seqid); extern void nfs_free_seqid(struct nfs_seqid *seqid); -extern int nfs40_setup_sequence(struct nfs4_slot_table *tbl, +extern int nfs4_setup_sequence(const struct nfs_client *client, struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, struct rpc_task *task); diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index f62d58cb3014..4ced1c964b1e 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -622,10 +622,10 @@ static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) args->sa_privileged = 1; } -int nfs40_setup_sequence(struct nfs4_slot_table *tbl, - struct nfs4_sequence_args *args, - struct nfs4_sequence_res *res, - struct rpc_task *task) +static int nfs40_setup_sequence(struct nfs4_slot_table *tbl, + struct nfs4_sequence_args *args, + struct nfs4_sequence_res *res, + struct rpc_task *task) { struct nfs4_slot *slot; @@ -662,7 +662,6 @@ out_sleep: spin_unlock(&tbl->slot_tbl_lock); return -EAGAIN; } -EXPORT_SYMBOL_GPL(nfs40_setup_sequence); static void nfs40_sequence_free_slot(struct nfs4_sequence_res *res) { @@ -882,7 +881,7 @@ int nfs4_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) } EXPORT_SYMBOL_GPL(nfs4_sequence_done); -int nfs41_setup_sequence(struct nfs4_session *session, +static int nfs41_setup_sequence(struct nfs4_session *session, struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, struct rpc_task *task) @@ -945,12 +944,11 @@ out_sleep: spin_unlock(&tbl->slot_tbl_lock); return -EAGAIN; } -EXPORT_SYMBOL_GPL(nfs41_setup_sequence); -static int nfs4_setup_sequence(const struct nfs_client *client, - struct nfs4_sequence_args *args, - struct nfs4_sequence_res *res, - struct rpc_task *task) +int nfs4_setup_sequence(const struct nfs_client *client, + struct nfs4_sequence_args *args, + struct nfs4_sequence_res *res, + struct rpc_task *task) { struct nfs4_session *session = nfs4_get_session(client); int ret = 0; @@ -968,6 +966,7 @@ static int nfs4_setup_sequence(const struct nfs_client *client, dprintk("<-- %s status=%d\n", __func__, ret); return ret; } +EXPORT_SYMBOL_GPL(nfs4_setup_sequence); static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) { @@ -993,13 +992,14 @@ static const struct rpc_call_ops nfs41_call_sync_ops = { #else /* !CONFIG_NFS_V4_1 */ -static int nfs4_setup_sequence(const struct nfs_client *client, - struct nfs4_sequence_args *args, - struct nfs4_sequence_res *res, - struct rpc_task *task) +int nfs4_setup_sequence(const struct nfs_client *client, + struct nfs4_sequence_args *args, + struct nfs4_sequence_res *res, + struct rpc_task *task) { return nfs40_setup_sequence(client->cl_slot_tbl, args, res, task); } +EXPORT_SYMBOL_GPL(nfs4_setup_sequence); static int nfs4_sequence_process(struct rpc_task *task, struct nfs4_sequence_res *res) { -- cgit v1.2.3 From 7981c8a659143173882dda43b3056a777faeeb7b Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Tue, 10 Jan 2017 11:39:53 -0500 Subject: NFS: Create a single nfs4_setup_sequence() function The inline ifdef lets us put everything in a single place, rather than having two (very similar) versions of this function. Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 76 +++++++++++++++++++++---------------------------------- 1 file changed, 29 insertions(+), 47 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 4ced1c964b1e..e6f563c1689e 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -945,37 +945,14 @@ out_sleep: return -EAGAIN; } -int nfs4_setup_sequence(const struct nfs_client *client, - struct nfs4_sequence_args *args, - struct nfs4_sequence_res *res, - struct rpc_task *task) -{ - struct nfs4_session *session = nfs4_get_session(client); - int ret = 0; - - if (!session) - return nfs40_setup_sequence(client->cl_slot_tbl, - args, res, task); - - dprintk("--> %s clp %p session %p sr_slot %u\n", - __func__, session->clp, session, res->sr_slot ? - res->sr_slot->slot_nr : NFS4_NO_SLOT); - - ret = nfs41_setup_sequence(session, args, res, task); - - dprintk("<-- %s status=%d\n", __func__, ret); - return ret; -} -EXPORT_SYMBOL_GPL(nfs4_setup_sequence); - static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) { struct nfs4_call_sync_data *data = calldata; - struct nfs4_session *session = nfs4_get_session(data->seq_server->nfs_client); dprintk("--> %s data->seq_server %p\n", __func__, data->seq_server); - nfs41_setup_sequence(session, data->seq_args, data->seq_res, task); + nfs4_setup_sequence(data->seq_server->nfs_client, + data->seq_args, data->seq_res, task); } static void nfs41_call_sync_done(struct rpc_task *task, void *calldata) @@ -992,15 +969,6 @@ static const struct rpc_call_ops nfs41_call_sync_ops = { #else /* !CONFIG_NFS_V4_1 */ -int nfs4_setup_sequence(const struct nfs_client *client, - struct nfs4_sequence_args *args, - struct nfs4_sequence_res *res, - struct rpc_task *task) -{ - return nfs40_setup_sequence(client->cl_slot_tbl, args, res, task); -} -EXPORT_SYMBOL_GPL(nfs4_setup_sequence); - static int nfs4_sequence_process(struct rpc_task *task, struct nfs4_sequence_res *res) { return nfs40_sequence_done(task, res); @@ -1021,6 +989,22 @@ EXPORT_SYMBOL_GPL(nfs4_sequence_done); #endif /* !CONFIG_NFS_V4_1 */ +int nfs4_setup_sequence(const struct nfs_client *client, + struct nfs4_sequence_args *args, + struct nfs4_sequence_res *res, + struct rpc_task *task) +{ +#if defined(CONFIG_NFS_V4_1) + struct nfs4_session *session = nfs4_get_session(client); + + if (session) + return nfs41_setup_sequence(session, args, res, task); +#endif /* CONFIG_NFS_V4_1 */ + return nfs40_setup_sequence(client->cl_slot_tbl, args, res, task); + +} +EXPORT_SYMBOL_GPL(nfs4_setup_sequence); + static void nfs40_call_sync_prepare(struct rpc_task *task, void *calldata) { struct nfs4_call_sync_data *data = calldata; @@ -2047,8 +2031,8 @@ static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata) { struct nfs4_opendata *data = calldata; - nfs40_setup_sequence(data->o_arg.server->nfs_client->cl_slot_tbl, - &data->c_arg.seq_args, &data->c_res.seq_res, task); + nfs4_setup_sequence(data->o_arg.server->nfs_client, + &data->c_arg.seq_args, &data->c_res.seq_res, task); } static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata) @@ -6639,8 +6623,8 @@ static void nfs4_release_lockowner_prepare(struct rpc_task *task, void *calldata { struct nfs_release_lockowner_data *data = calldata; struct nfs_server *server = data->server; - nfs40_setup_sequence(server->nfs_client->cl_slot_tbl, - &data->args.seq_args, &data->res.seq_res, task); + nfs4_setup_sequence(server->nfs_client, &data->args.seq_args, + &data->res.seq_res, task); data->args.lock_owner.clientid = server->nfs_client->cl_clientid; data->timestamp = jiffies; } @@ -7830,7 +7814,7 @@ static void nfs4_get_lease_time_prepare(struct rpc_task *task, dprintk("--> %s\n", __func__); /* just setup sequence, do not trigger session recovery since we're invoked within one */ - nfs41_setup_sequence(data->clp->cl_session, + nfs4_setup_sequence(data->clp, &data->args->la_seq_args, &data->res->lr_seq_res, task); @@ -8201,7 +8185,7 @@ static void nfs41_sequence_prepare(struct rpc_task *task, void *data) args = task->tk_msg.rpc_argp; res = task->tk_msg.rpc_resp; - nfs41_setup_sequence(clp->cl_session, args, res, task); + nfs4_setup_sequence(clp, args, res, task); } static const struct rpc_call_ops nfs41_sequence_ops = { @@ -8289,7 +8273,7 @@ static void nfs4_reclaim_complete_prepare(struct rpc_task *task, void *data) { struct nfs4_reclaim_complete_data *calldata = data; - nfs41_setup_sequence(calldata->clp->cl_session, + nfs4_setup_sequence(calldata->clp, &calldata->arg.seq_args, &calldata->res.seq_res, task); @@ -8396,10 +8380,9 @@ nfs4_layoutget_prepare(struct rpc_task *task, void *calldata) { struct nfs4_layoutget *lgp = calldata; struct nfs_server *server = NFS_SERVER(lgp->args.inode); - struct nfs4_session *session = nfs4_get_session(server->nfs_client); dprintk("--> %s\n", __func__); - nfs41_setup_sequence(session, &lgp->args.seq_args, + nfs4_setup_sequence(server->nfs_client, &lgp->args.seq_args, &lgp->res.seq_res, task); dprintk("<-- %s\n", __func__); } @@ -8643,7 +8626,7 @@ nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata) struct nfs4_layoutreturn *lrp = calldata; dprintk("--> %s\n", __func__); - nfs41_setup_sequence(lrp->clp->cl_session, + nfs4_setup_sequence(lrp->clp, &lrp->args.seq_args, &lrp->res.seq_res, task); @@ -8793,9 +8776,8 @@ static void nfs4_layoutcommit_prepare(struct rpc_task *task, void *calldata) { struct nfs4_layoutcommit_data *data = calldata; struct nfs_server *server = NFS_SERVER(data->args.inode); - struct nfs4_session *session = nfs4_get_session(server->nfs_client); - nfs41_setup_sequence(session, + nfs4_setup_sequence(server->nfs_client, &data->args.seq_args, &data->res.seq_res, task); @@ -9119,7 +9101,7 @@ struct nfs_free_stateid_data { static void nfs41_free_stateid_prepare(struct rpc_task *task, void *calldata) { struct nfs_free_stateid_data *data = calldata; - nfs41_setup_sequence(nfs4_get_session(data->server->nfs_client), + nfs4_setup_sequence(data->server->nfs_client, &data->args.seq_args, &data->res.seq_res, task); -- cgit v1.2.3 From 9dd9107f330c5d371c62b460975a32d8bd5712b4 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Tue, 10 Jan 2017 12:01:46 -0500 Subject: NFS: Move slot-already-allocated check into nfs_setup_sequence() This puts the check in a single place, rather than needing to implement it twice for v4.0 and v4.1. Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index e6f563c1689e..dcb2f73c7d4c 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -629,10 +629,6 @@ static int nfs40_setup_sequence(struct nfs4_slot_table *tbl, { struct nfs4_slot *slot; - /* slot already allocated? */ - if (res->sr_slot != NULL) - goto out_start; - spin_lock(&tbl->slot_tbl_lock); if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged) goto out_sleep; @@ -649,7 +645,6 @@ static int nfs40_setup_sequence(struct nfs4_slot_table *tbl, args->sa_slot = slot; res->sr_slot = slot; -out_start: rpc_call_start(task); return 0; @@ -890,10 +885,6 @@ static int nfs41_setup_sequence(struct nfs4_session *session, struct nfs4_slot_table *tbl; dprintk("--> %s\n", __func__); - /* slot already allocated? */ - if (res->sr_slot != NULL) - goto out_success; - tbl = &session->fc_slot_table; task->tk_timeout = 0; @@ -931,7 +922,6 @@ static int nfs41_setup_sequence(struct nfs4_session *session, */ res->sr_status = 1; trace_nfs4_setup_sequence(session, args); -out_success: rpc_call_start(task); return 0; out_sleep: @@ -996,12 +986,21 @@ int nfs4_setup_sequence(const struct nfs_client *client, { #if defined(CONFIG_NFS_V4_1) struct nfs4_session *session = nfs4_get_session(client); +#endif /* CONFIG_NFS_V4_1 */ + /* slot already allocated? */ + if (res->sr_slot != NULL) + goto out_start; + +#if defined(CONFIG_NFS_V4_1) if (session) return nfs41_setup_sequence(session, args, res, task); #endif /* CONFIG_NFS_V4_1 */ return nfs40_setup_sequence(client->cl_slot_tbl, args, res, task); +out_start: + rpc_call_start(task); + return 0; } EXPORT_SYMBOL_GPL(nfs4_setup_sequence); -- cgit v1.2.3 From 6994cdd798568a0ddb8e0a85e2af24dbe655c341 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Tue, 10 Jan 2017 16:13:27 -0500 Subject: NFS: Lock the slot table from a single place during setup sequence Rather than implementing this twice for NFS v4.0 and v4.1 Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 25 ++++++++++++------------- 1 file changed, 12 insertions(+), 13 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index dcb2f73c7d4c..681cb5e77da2 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -629,7 +629,6 @@ static int nfs40_setup_sequence(struct nfs4_slot_table *tbl, { struct nfs4_slot *slot; - spin_lock(&tbl->slot_tbl_lock); if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged) goto out_sleep; @@ -639,13 +638,10 @@ static int nfs40_setup_sequence(struct nfs4_slot_table *tbl, task->tk_timeout = HZ >> 2; goto out_sleep; } - spin_unlock(&tbl->slot_tbl_lock); slot->privileged = args->sa_privileged ? 1 : 0; args->sa_slot = slot; res->sr_slot = slot; - - rpc_call_start(task); return 0; out_sleep: @@ -654,7 +650,6 @@ out_sleep: NULL, RPC_PRIORITY_PRIVILEGED); else rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); - spin_unlock(&tbl->slot_tbl_lock); return -EAGAIN; } @@ -889,7 +884,6 @@ static int nfs41_setup_sequence(struct nfs4_session *session, task->tk_timeout = 0; - spin_lock(&tbl->slot_tbl_lock); if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state) && !args->sa_privileged) { /* The state manager will wait until the slot table is empty */ @@ -905,7 +899,6 @@ static int nfs41_setup_sequence(struct nfs4_session *session, dprintk("<-- %s: no free slots\n", __func__); goto out_sleep; } - spin_unlock(&tbl->slot_tbl_lock); slot->privileged = args->sa_privileged ? 1 : 0; args->sa_slot = slot; @@ -922,7 +915,6 @@ static int nfs41_setup_sequence(struct nfs4_session *session, */ res->sr_status = 1; trace_nfs4_setup_sequence(session, args); - rpc_call_start(task); return 0; out_sleep: /* Privileged tasks are queued with top priority */ @@ -931,7 +923,6 @@ out_sleep: NULL, RPC_PRIORITY_PRIVILEGED); else rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); - spin_unlock(&tbl->slot_tbl_lock); return -EAGAIN; } @@ -984,19 +975,27 @@ int nfs4_setup_sequence(const struct nfs_client *client, struct nfs4_sequence_res *res, struct rpc_task *task) { -#if defined(CONFIG_NFS_V4_1) struct nfs4_session *session = nfs4_get_session(client); -#endif /* CONFIG_NFS_V4_1 */ + struct nfs4_slot_table *tbl = session ? &session->fc_slot_table : + client->cl_slot_tbl; + int ret; /* slot already allocated? */ if (res->sr_slot != NULL) goto out_start; + spin_lock(&tbl->slot_tbl_lock); + #if defined(CONFIG_NFS_V4_1) if (session) - return nfs41_setup_sequence(session, args, res, task); + ret = nfs41_setup_sequence(session, args, res, task); + else #endif /* CONFIG_NFS_V4_1 */ - return nfs40_setup_sequence(client->cl_slot_tbl, args, res, task); + ret = nfs40_setup_sequence(client->cl_slot_tbl, args, res, task); + + spin_unlock(&tbl->slot_tbl_lock); + if (ret < 0) + return ret; out_start: rpc_call_start(task); -- cgit v1.2.3 From 0dcee8bb749e5de43b180ccfcb0c5005aa529c92 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Tue, 10 Jan 2017 16:29:54 -0500 Subject: NFS: Handle setup sequence task rescheduling in a single place Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 37 +++++++++++++++---------------------- 1 file changed, 15 insertions(+), 22 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 681cb5e77da2..9759d6f9e1a5 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -630,27 +630,19 @@ static int nfs40_setup_sequence(struct nfs4_slot_table *tbl, struct nfs4_slot *slot; if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged) - goto out_sleep; + return -EAGAIN; slot = nfs4_alloc_slot(tbl); if (IS_ERR(slot)) { if (slot == ERR_PTR(-ENOMEM)) task->tk_timeout = HZ >> 2; - goto out_sleep; + return -EAGAIN; } slot->privileged = args->sa_privileged ? 1 : 0; args->sa_slot = slot; res->sr_slot = slot; return 0; - -out_sleep: - if (args->sa_privileged) - rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, - NULL, RPC_PRIORITY_PRIVILEGED); - else - rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); - return -EAGAIN; } static void nfs40_sequence_free_slot(struct nfs4_sequence_res *res) @@ -888,7 +880,7 @@ static int nfs41_setup_sequence(struct nfs4_session *session, !args->sa_privileged) { /* The state manager will wait until the slot table is empty */ dprintk("%s session is draining\n", __func__); - goto out_sleep; + return -EAGAIN; } slot = nfs4_alloc_slot(tbl); @@ -897,7 +889,7 @@ static int nfs41_setup_sequence(struct nfs4_session *session, if (slot == ERR_PTR(-ENOMEM)) task->tk_timeout = HZ >> 2; dprintk("<-- %s: no free slots\n", __func__); - goto out_sleep; + return -EAGAIN; } slot->privileged = args->sa_privileged ? 1 : 0; @@ -916,14 +908,6 @@ static int nfs41_setup_sequence(struct nfs4_session *session, res->sr_status = 1; trace_nfs4_setup_sequence(session, args); return 0; -out_sleep: - /* Privileged tasks are queued with top priority */ - if (args->sa_privileged) - rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, - NULL, RPC_PRIORITY_PRIVILEGED); - else - rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); - return -EAGAIN; } static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) @@ -993,13 +977,22 @@ int nfs4_setup_sequence(const struct nfs_client *client, #endif /* CONFIG_NFS_V4_1 */ ret = nfs40_setup_sequence(client->cl_slot_tbl, args, res, task); + if (ret == -EAGAIN) + goto out_sleep; spin_unlock(&tbl->slot_tbl_lock); - if (ret < 0) - return ret; out_start: rpc_call_start(task); return 0; + +out_sleep: + if (args->sa_privileged) + rpc_sleep_on_priority(&tbl->slot_tbl_waitq, task, + NULL, RPC_PRIORITY_PRIVILEGED); + else + rpc_sleep_on(&tbl->slot_tbl_waitq, task, NULL); + spin_unlock(&tbl->slot_tbl_lock); + return -EAGAIN; } EXPORT_SYMBOL_GPL(nfs4_setup_sequence); -- cgit v1.2.3 From 76ee03540f316948c3bc89fc76ded86c88e887a5 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Tue, 10 Jan 2017 16:49:31 -0500 Subject: NFS: Check if the slot table is draining from nfs4_setup_sequence() Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 23 +++++++++-------------- 1 file changed, 9 insertions(+), 14 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 9759d6f9e1a5..a74e1a4e3264 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -629,9 +629,6 @@ static int nfs40_setup_sequence(struct nfs4_slot_table *tbl, { struct nfs4_slot *slot; - if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged) - return -EAGAIN; - slot = nfs4_alloc_slot(tbl); if (IS_ERR(slot)) { if (slot == ERR_PTR(-ENOMEM)) @@ -874,15 +871,6 @@ static int nfs41_setup_sequence(struct nfs4_session *session, dprintk("--> %s\n", __func__); tbl = &session->fc_slot_table; - task->tk_timeout = 0; - - if (test_bit(NFS4_SLOT_TBL_DRAINING, &tbl->slot_tbl_state) && - !args->sa_privileged) { - /* The state manager will wait until the slot table is empty */ - dprintk("%s session is draining\n", __func__); - return -EAGAIN; - } - slot = nfs4_alloc_slot(tbl); if (IS_ERR(slot)) { /* If out of memory, try again in 1/4 second */ @@ -960,15 +948,22 @@ int nfs4_setup_sequence(const struct nfs_client *client, struct rpc_task *task) { struct nfs4_session *session = nfs4_get_session(client); - struct nfs4_slot_table *tbl = session ? &session->fc_slot_table : - client->cl_slot_tbl; + struct nfs4_slot_table *tbl = client->cl_slot_tbl; int ret; /* slot already allocated? */ if (res->sr_slot != NULL) goto out_start; + if (session) { + tbl = &session->fc_slot_table; + task->tk_timeout = 0; + } + spin_lock(&tbl->slot_tbl_lock); + /* The state manager will wait until the slot table is empty */ + if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged) + goto out_sleep; #if defined(CONFIG_NFS_V4_1) if (session) -- cgit v1.2.3 From 3d35808b1de48e0c478668b3177fcd3360aae543 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Wed, 11 Jan 2017 10:54:04 -0500 Subject: NFS: Merge the remaining setup_sequence functions This creates a single place for all the work to happen, using the presence of a session to determine if extra values need to be set. Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 87 +++++++++++++------------------------------------------ 1 file changed, 20 insertions(+), 67 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index a74e1a4e3264..f6a362ffcbd4 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -622,26 +622,6 @@ static void nfs4_set_sequence_privileged(struct nfs4_sequence_args *args) args->sa_privileged = 1; } -static int nfs40_setup_sequence(struct nfs4_slot_table *tbl, - struct nfs4_sequence_args *args, - struct nfs4_sequence_res *res, - struct rpc_task *task) -{ - struct nfs4_slot *slot; - - slot = nfs4_alloc_slot(tbl); - if (IS_ERR(slot)) { - if (slot == ERR_PTR(-ENOMEM)) - task->tk_timeout = HZ >> 2; - return -EAGAIN; - } - - slot->privileged = args->sa_privileged ? 1 : 0; - args->sa_slot = slot; - res->sr_slot = slot; - return 0; -} - static void nfs40_sequence_free_slot(struct nfs4_sequence_res *res) { struct nfs4_slot *slot = res->sr_slot; @@ -860,44 +840,6 @@ int nfs4_sequence_done(struct rpc_task *task, struct nfs4_sequence_res *res) } EXPORT_SYMBOL_GPL(nfs4_sequence_done); -static int nfs41_setup_sequence(struct nfs4_session *session, - struct nfs4_sequence_args *args, - struct nfs4_sequence_res *res, - struct rpc_task *task) -{ - struct nfs4_slot *slot; - struct nfs4_slot_table *tbl; - - dprintk("--> %s\n", __func__); - tbl = &session->fc_slot_table; - - slot = nfs4_alloc_slot(tbl); - if (IS_ERR(slot)) { - /* If out of memory, try again in 1/4 second */ - if (slot == ERR_PTR(-ENOMEM)) - task->tk_timeout = HZ >> 2; - dprintk("<-- %s: no free slots\n", __func__); - return -EAGAIN; - } - - slot->privileged = args->sa_privileged ? 1 : 0; - args->sa_slot = slot; - - dprintk("<-- %s slotid=%u seqid=%u\n", __func__, - slot->slot_nr, slot->seq_nr); - - res->sr_slot = slot; - res->sr_timestamp = jiffies; - res->sr_status_flags = 0; - /* - * sr_status is only set in decode_sequence, and so will remain - * set to 1 if an rpc level failure occurs. - */ - res->sr_status = 1; - trace_nfs4_setup_sequence(session, args); - return 0; -} - static void nfs41_call_sync_prepare(struct rpc_task *task, void *calldata) { struct nfs4_call_sync_data *data = calldata; @@ -949,7 +891,7 @@ int nfs4_setup_sequence(const struct nfs_client *client, { struct nfs4_session *session = nfs4_get_session(client); struct nfs4_slot_table *tbl = client->cl_slot_tbl; - int ret; + struct nfs4_slot *slot; /* slot already allocated? */ if (res->sr_slot != NULL) @@ -965,17 +907,28 @@ int nfs4_setup_sequence(const struct nfs_client *client, if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged) goto out_sleep; -#if defined(CONFIG_NFS_V4_1) - if (session) - ret = nfs41_setup_sequence(session, args, res, task); - else -#endif /* CONFIG_NFS_V4_1 */ - ret = nfs40_setup_sequence(client->cl_slot_tbl, args, res, task); - - if (ret == -EAGAIN) + slot = nfs4_alloc_slot(tbl); + if (IS_ERR(slot)) { + /* Try again in 1/4 second */ + if (slot == ERR_PTR(-ENOMEM)) + task->tk_timeout = HZ >> 2; goto out_sleep; + } spin_unlock(&tbl->slot_tbl_lock); + slot->privileged = args->sa_privileged ? 1 : 0; + args->sa_slot = slot; + + res->sr_slot = slot; + if (session) { + res->sr_timestamp = jiffies; + res->sr_status_flags = 0; + res->sr_status = 1; +#ifdef CONFIG_NFS_V4_1 + trace_nfs4_setup_sequence(session, args); +#endif /* CONFIG_NFS_V4_1 */ + } + out_start: rpc_call_start(task); return 0; -- cgit v1.2.3 From ad05cc0f04341216923895c05e2c364ef34f1bb4 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Wed, 11 Jan 2017 13:37:06 -0500 Subject: NFS: Make trace_nfs4_setup_sequence() available to NFS v4.0 This tracepoint displays information about the slot that was chosen for the RPC, in addition to session information. This could be useful information for debugging, and we can set the session id hash to 0 to indicate that there is no session. Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 4 +--- fs/nfs/nfs4session.h | 2 ++ fs/nfs/nfs4trace.h | 64 ++++++++++++++++++++++++++-------------------------- 3 files changed, 35 insertions(+), 35 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index f6a362ffcbd4..ae03f976fbd3 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -924,11 +924,9 @@ int nfs4_setup_sequence(const struct nfs_client *client, res->sr_timestamp = jiffies; res->sr_status_flags = 0; res->sr_status = 1; -#ifdef CONFIG_NFS_V4_1 - trace_nfs4_setup_sequence(session, args); -#endif /* CONFIG_NFS_V4_1 */ } + trace_nfs4_setup_sequence(session, args); out_start: rpc_call_start(task); return 0; diff --git a/fs/nfs/nfs4session.h b/fs/nfs/nfs4session.h index f6378d95b1b5..dfae4880eacb 100644 --- a/fs/nfs/nfs4session.h +++ b/fs/nfs/nfs4session.h @@ -175,6 +175,8 @@ static inline int nfs4_has_persistent_session(const struct nfs_client *clp) return 0; } +#define nfs_session_id_hash(session) (0) + #endif /* defined(CONFIG_NFS_V4_1) */ #endif /* IS_ENABLED(CONFIG_NFS_V4) */ #endif /* __LINUX_FS_NFS_NFS4SESSION_H */ diff --git a/fs/nfs/nfs4trace.h b/fs/nfs/nfs4trace.h index cfb8f7ce5cf6..845d0eadefc9 100644 --- a/fs/nfs/nfs4trace.h +++ b/fs/nfs/nfs4trace.h @@ -241,38 +241,6 @@ DEFINE_NFS4_CLIENTID_EVENT(nfs4_bind_conn_to_session); DEFINE_NFS4_CLIENTID_EVENT(nfs4_sequence); DEFINE_NFS4_CLIENTID_EVENT(nfs4_reclaim_complete); -TRACE_EVENT(nfs4_setup_sequence, - TP_PROTO( - const struct nfs4_session *session, - const struct nfs4_sequence_args *args - ), - TP_ARGS(session, args), - - TP_STRUCT__entry( - __field(unsigned int, session) - __field(unsigned int, slot_nr) - __field(unsigned int, seq_nr) - __field(unsigned int, highest_used_slotid) - ), - - TP_fast_assign( - const struct nfs4_slot *sa_slot = args->sa_slot; - __entry->session = nfs_session_id_hash(&session->sess_id); - __entry->slot_nr = sa_slot->slot_nr; - __entry->seq_nr = sa_slot->seq_nr; - __entry->highest_used_slotid = - sa_slot->table->highest_used_slotid; - ), - TP_printk( - "session=0x%08x slot_nr=%u seq_nr=%u " - "highest_used_slotid=%u", - __entry->session, - __entry->slot_nr, - __entry->seq_nr, - __entry->highest_used_slotid - ) -); - #define show_nfs4_sequence_status_flags(status) \ __print_flags((unsigned long)status, "|", \ { SEQ4_STATUS_CB_PATH_DOWN, "CB_PATH_DOWN" }, \ @@ -382,6 +350,38 @@ TRACE_EVENT(nfs4_cb_sequence, ); #endif /* CONFIG_NFS_V4_1 */ +TRACE_EVENT(nfs4_setup_sequence, + TP_PROTO( + const struct nfs4_session *session, + const struct nfs4_sequence_args *args + ), + TP_ARGS(session, args), + + TP_STRUCT__entry( + __field(unsigned int, session) + __field(unsigned int, slot_nr) + __field(unsigned int, seq_nr) + __field(unsigned int, highest_used_slotid) + ), + + TP_fast_assign( + const struct nfs4_slot *sa_slot = args->sa_slot; + __entry->session = session ? nfs_session_id_hash(&session->sess_id) : 0; + __entry->slot_nr = sa_slot->slot_nr; + __entry->seq_nr = sa_slot->seq_nr; + __entry->highest_used_slotid = + sa_slot->table->highest_used_slotid; + ), + TP_printk( + "session=0x%08x slot_nr=%u seq_nr=%u " + "highest_used_slotid=%u", + __entry->session, + __entry->slot_nr, + __entry->seq_nr, + __entry->highest_used_slotid + ) +); + DECLARE_EVENT_CLASS(nfs4_open_event, TP_PROTO( const struct nfs_open_context *ctx, -- cgit v1.2.3 From d9b67e1e499b056a83d2db6046d74652cf836998 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Wed, 11 Jan 2017 15:04:25 -0500 Subject: NFS: Fix inconsistent indentation in nfs4proc.c Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 56 +++++++++++++++++++++++++++---------------------------- 1 file changed, 28 insertions(+), 28 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index ae03f976fbd3..328eda9e6db1 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2209,15 +2209,15 @@ static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) data->is_recover = 1; } task = rpc_run_task(&task_setup_data); - if (IS_ERR(task)) - return PTR_ERR(task); - status = nfs4_wait_for_completion_rpc_task(task); - if (status != 0) { - data->cancelled = 1; - smp_wmb(); - } else - status = data->rpc_status; - rpc_put_task(task); + if (IS_ERR(task)) + return PTR_ERR(task); + status = nfs4_wait_for_completion_rpc_task(task); + if (status != 0) { + data->cancelled = 1; + smp_wmb(); + } else + status = data->rpc_status; + rpc_put_task(task); return status; } @@ -2226,7 +2226,7 @@ static int _nfs4_recover_proc_open(struct nfs4_opendata *data) { struct inode *dir = d_inode(data->dir); struct nfs_openres *o_res = &data->o_res; - int status; + int status; status = nfs4_run_open_task(data, 1); if (status != 0 || !data->rpc_done) @@ -2860,12 +2860,12 @@ static int _nfs4_do_setattr(struct inode *inode, struct nfs_open_context *ctx) { struct nfs_server *server = NFS_SERVER(inode); - struct rpc_message msg = { + struct rpc_message msg = { .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], .rpc_argp = arg, .rpc_resp = res, .rpc_cred = cred, - }; + }; struct rpc_cred *delegation_cred = NULL; unsigned long timestamp = jiffies; fmode_t fmode; @@ -2913,18 +2913,18 @@ static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, { struct nfs_server *server = NFS_SERVER(inode); struct nfs4_state *state = ctx ? ctx->state : NULL; - struct nfs_setattrargs arg = { - .fh = NFS_FH(inode), - .iap = sattr, + struct nfs_setattrargs arg = { + .fh = NFS_FH(inode), + .iap = sattr, .server = server, .bitmask = server->attr_bitmask, .label = ilabel, - }; - struct nfs_setattrres res = { + }; + struct nfs_setattrres res = { .fattr = fattr, .label = olabel, .server = server, - }; + }; struct nfs4_exception exception = { .state = state, .inode = inode, @@ -3038,7 +3038,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data) } } - /* hmm. we are done with the inode, and in the process of freeing + /* hmm. we are done with the inode, and in the process of freeing * the state_owner. we keep this around to process errors */ switch (task->tk_status) { @@ -4895,8 +4895,8 @@ static int buf_to_pages_noslab(const void *buf, size_t buflen, if (newpage == NULL) goto unwind; memcpy(page_address(newpage), buf, len); - buf += len; - buflen -= len; + buf += len; + buflen -= len; *pages++ = newpage; rc++; } while (buflen != 0); @@ -5219,8 +5219,8 @@ static int _nfs4_do_set_security_label(struct inode *inode, struct nfs_server *server = NFS_SERVER(inode); const u32 bitmask[3] = { 0, 0, FATTR4_WORD2_SECURITY_LABEL }; struct nfs_setattrargs arg = { - .fh = NFS_FH(inode), - .iap = &sattr, + .fh = NFS_FH(inode), + .iap = &sattr, .server = server, .bitmask = bitmask, .label = ilabel, @@ -5231,9 +5231,9 @@ static int _nfs4_do_set_security_label(struct inode *inode, .server = server, }; struct rpc_message msg = { - .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], - .rpc_argp = &arg, - .rpc_resp = &res, + .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETATTR], + .rpc_argp = &arg, + .rpc_resp = &res, }; int status; @@ -5779,8 +5779,8 @@ static int _nfs4_proc_getlk(struct nfs4_state *state, int cmd, struct file_lock }; struct rpc_message msg = { .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKT], - .rpc_argp = &arg, - .rpc_resp = &res, + .rpc_argp = &arg, + .rpc_resp = &res, .rpc_cred = state->owner->so_cred, }; struct nfs4_lock_state *lsp; -- cgit v1.2.3 From eeea5361634eeef9a09b7b5ae449b41623c23886 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Wed, 11 Jan 2017 16:01:21 -0500 Subject: NFS: Clean up _nfs4_is_integrity_protected() We can cut out the if statement and return the results of the comparison directly. Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 328eda9e6db1..3f5d4fd4e95a 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -577,12 +577,7 @@ nfs4_async_handle_error(struct rpc_task *task, struct nfs_server *server, static bool _nfs4_is_integrity_protected(struct nfs_client *clp) { rpc_authflavor_t flavor = clp->cl_rpcclient->cl_auth->au_flavor; - - if (flavor == RPC_AUTH_GSS_KRB5I || - flavor == RPC_AUTH_GSS_KRB5P) - return true; - - return false; + return (flavor == RPC_AUTH_GSS_KRB5I) || (flavor == RPC_AUTH_GSS_KRB5P); } static void do_renew_lease(struct nfs_client *clp, unsigned long timestamp) -- cgit v1.2.3 From 820bf85ce249ec5b4da9f6aaefa3f5491b23b587 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Wed, 11 Jan 2017 15:01:43 -0500 Subject: NFS: Remove nfs4_wait_for_completion_rpc_task() Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 22 +++++++--------------- 1 file changed, 7 insertions(+), 15 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 3f5d4fd4e95a..b577e172c95b 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -1245,14 +1245,6 @@ static void nfs4_opendata_put(struct nfs4_opendata *p) kref_put(&p->kref, nfs4_opendata_free); } -static int nfs4_wait_for_completion_rpc_task(struct rpc_task *task) -{ - int ret; - - ret = rpc_wait_for_completion_task(task); - return ret; -} - static bool nfs4_mode_match_open_stateid(struct nfs4_state *state, fmode_t fmode) { @@ -2039,7 +2031,7 @@ static int _nfs4_proc_open_confirm(struct nfs4_opendata *data) task = rpc_run_task(&task_setup_data); if (IS_ERR(task)) return PTR_ERR(task); - status = nfs4_wait_for_completion_rpc_task(task); + status = rpc_wait_for_completion_task(task); if (status != 0) { data->cancelled = 1; smp_wmb(); @@ -2206,7 +2198,7 @@ static int nfs4_run_open_task(struct nfs4_opendata *data, int isrecover) task = rpc_run_task(&task_setup_data); if (IS_ERR(task)) return PTR_ERR(task); - status = nfs4_wait_for_completion_rpc_task(task); + status = rpc_wait_for_completion_task(task); if (status != 0) { data->cancelled = 1; smp_wmb(); @@ -5732,7 +5724,7 @@ static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, co return PTR_ERR(task); if (!issync) goto out; - status = nfs4_wait_for_completion_rpc_task(task); + status = rpc_wait_for_completion_task(task); if (status != 0) goto out; status = data->rpc_status; @@ -6002,7 +5994,7 @@ static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock * status = PTR_ERR(task); if (IS_ERR(task)) goto out; - status = nfs4_wait_for_completion_rpc_task(task); + status = rpc_wait_for_completion_task(task); rpc_put_task(task); out: request->fl_flags = fl_flags; @@ -6229,7 +6221,7 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f task = rpc_run_task(&task_setup_data); if (IS_ERR(task)) return PTR_ERR(task); - ret = nfs4_wait_for_completion_rpc_task(task); + ret = rpc_wait_for_completion_task(task); if (ret == 0) { ret = data->rpc_status; if (ret) @@ -8297,7 +8289,7 @@ static int nfs41_proc_reclaim_complete(struct nfs_client *clp, status = PTR_ERR(task); goto out; } - status = nfs4_wait_for_completion_rpc_task(task); + status = rpc_wait_for_completion_task(task); if (status == 0) status = task->tk_status; rpc_put_task(task); @@ -8529,7 +8521,7 @@ nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout, gfp_t gfp_flags) task = rpc_run_task(&task_setup_data); if (IS_ERR(task)) return ERR_CAST(task); - status = nfs4_wait_for_completion_rpc_task(task); + status = rpc_wait_for_completion_task(task); if (status == 0) { status = nfs4_layoutget_handle_exception(task, lgp, &exception); *timeout = exception.timeout; -- cgit v1.2.3 From 37a8484aef09638b9eead7070cb0ee27adb74ceb Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Wed, 11 Jan 2017 16:08:35 -0500 Subject: NFS: Return errors directly in _nfs4_opendata_reclaim_to_nfs4_state() There is no need for a goto just to return an error code without any cleanup. Returning the error directly helps to clean up the code. Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index b577e172c95b..3e892b05e62b 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -1639,17 +1639,15 @@ _nfs4_opendata_reclaim_to_nfs4_state(struct nfs4_opendata *data) int ret; if (!data->rpc_done) { - if (data->rpc_status) { - ret = data->rpc_status; - goto err; - } + if (data->rpc_status) + return ERR_PTR(data->rpc_status); /* cached opens have already been processed */ goto update; } ret = nfs_refresh_inode(inode, &data->f_attr); if (ret) - goto err; + return ERR_PTR(ret); if (data->o_res.delegation_type != 0) nfs4_opendata_check_deleg(data, state); @@ -1659,9 +1657,6 @@ update: atomic_inc(&state->count); return state; -err: - return ERR_PTR(ret); - } static struct nfs4_state * -- cgit v1.2.3 From d7e9825848cede4cf7589b63029b76428ae76958 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Wed, 11 Jan 2017 16:13:29 -0500 Subject: NFS: Remove an extra if in _nfs4_recover_proc_open() It's simpler just to return the status unconditionally Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 3e892b05e62b..031b867aaefa 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2216,11 +2216,8 @@ static int _nfs4_recover_proc_open(struct nfs4_opendata *data) nfs_fattr_map_and_free_names(NFS_SERVER(dir), &data->f_attr); - if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) { + if (o_res->rflags & NFS4_OPEN_RESULT_CONFIRM) status = _nfs4_proc_open_confirm(data); - if (status != 0) - return status; - } return status; } -- cgit v1.2.3 From 334f87dd11b7a0ed8f3d3b223fb5cede201e210a Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Wed, 11 Jan 2017 16:17:17 -0500 Subject: NFS: Remove nfs4_recover_expired_lease() This function doesn't add much, since all it does is access the server's nfs_client variable. Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 031b867aaefa..baf968990475 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2311,11 +2311,6 @@ static int _nfs4_proc_open(struct nfs4_opendata *data) return 0; } -static int nfs4_recover_expired_lease(struct nfs_server *server) -{ - return nfs4_client_recover_expired_lease(server->nfs_client); -} - /* * OPEN_EXPIRED: * reclaim state on the server after a network partition. @@ -2693,7 +2688,7 @@ static int _nfs4_do_open(struct inode *dir, dprintk("nfs4_do_open: nfs4_get_state_owner failed!\n"); goto out_err; } - status = nfs4_recover_expired_lease(server); + status = nfs4_client_recover_expired_lease(server->nfs_client); if (status != 0) goto err_put_state_owner; if (d_really_is_positive(dentry)) -- cgit v1.2.3 From 9df1336ca42c16622f1cae5dff246a0c9c644514 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Wed, 11 Jan 2017 16:30:08 -0500 Subject: NFS: Remove unnecessary goto in nfs4_lookup_root_sec() Once again, it's easier and cleaner just to return the error directly. Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index baf968990475..6c40944cb83d 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -3416,16 +3416,11 @@ static int nfs4_lookup_root_sec(struct nfs_server *server, struct nfs_fh *fhandl .pseudoflavor = flavor, }; struct rpc_auth *auth; - int ret; auth = rpcauth_create(&auth_args, server->client); - if (IS_ERR(auth)) { - ret = -EACCES; - goto out; - } - ret = nfs4_lookup_root(server, fhandle, info); -out: - return ret; + if (IS_ERR(auth)) + return -EACCES; + return nfs4_lookup_root(server, fhandle, info); } /* -- cgit v1.2.3 From 81b68de493a3c60517ef0435d2635b531ed590b9 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Wed, 11 Jan 2017 16:41:34 -0500 Subject: NFS: No need to set and return status in nfs41_lock_expired() Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 6c40944cb83d..81390e97c8d5 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -6282,8 +6282,7 @@ static int nfs41_lock_expired(struct nfs4_state *state, struct file_lock *reques 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; + return nfs4_lock_expired(state, request); } #endif -- cgit v1.2.3 From 49ad0145c3a81612482ecc064ce6ab908ae3bb1a Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Wed, 11 Jan 2017 16:51:59 -0500 Subject: NFS: Clean up nfs41_same_server_scope() The function is cleaner this way, since we can use the result of memcmp() directly Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 81390e97c8d5..bf014a2deefd 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -7120,11 +7120,9 @@ static bool nfs41_same_server_scope(struct nfs41_server_scope *a, struct nfs41_server_scope *b) { - if (a->server_scope_sz == b->server_scope_sz && - memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0) - return true; - - return false; + if (a->server_scope_sz != b->server_scope_sz) + return false; + return memcmp(a->server_scope, b->server_scope, a->server_scope_sz) == 0; } static void -- cgit v1.2.3 From 045c551947a8c6e787437d696262b562520ff2f0 Mon Sep 17 00:00:00 2001 From: Anna Schumaker Date: Wed, 11 Jan 2017 16:59:48 -0500 Subject: NFS: Return the comparison result directly in nfs41_match_stateid() Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index bf014a2deefd..aeaa6678b071 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -9116,10 +9116,8 @@ static bool nfs41_match_stateid(const nfs4_stateid *s1, if (s1->seqid == s2->seqid) return true; - if (s1->seqid == 0 || s2->seqid == 0) - return true; - return false; + return s1->seqid == 0 || s2->seqid == 0; } #endif /* CONFIG_NFS_V4_1 */ -- cgit v1.2.3 From 2e54b9b1b0ace6997aa4f9811af0811b2d8160f2 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Thu, 12 Jan 2017 15:38:06 +0000 Subject: pNFS/flexfiles: Make local symbol layoutreturn_ops static Fixes the following sparse warning: fs/nfs/flexfilelayout/flexfilelayout.c:2114:34: warning: symbol 'layoutreturn_ops' was not declared. Should it be static? Signed-off-by: Wei Yongjun Signed-off-by: Anna Schumaker --- fs/nfs/flexfilelayout/flexfilelayout.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/nfs') diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c index cc9064974104..6104696325be 100644 --- a/fs/nfs/flexfilelayout/flexfilelayout.c +++ b/fs/nfs/flexfilelayout/flexfilelayout.c @@ -2076,7 +2076,7 @@ ff_layout_free_layoutreturn(struct nfs4_xdr_opaque_data *args) kfree(ff_args); } -const struct nfs4_xdr_opaque_ops layoutreturn_ops = { +static const struct nfs4_xdr_opaque_ops layoutreturn_ops = { .encode = ff_layout_encode_layoutreturn, .free = ff_layout_free_layoutreturn, }; -- cgit v1.2.3 From 68e33bd6bbb79819e5cb7bce26559191b144c465 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Thu, 12 Jan 2017 15:39:18 +0000 Subject: NFSv4: Fix warning for using 0 as NULL Fixes the following sparse warning: fs/nfs/nfs4state.c:862:60: warning: Using plain integer as NULL pointer Signed-off-by: Wei Yongjun Signed-off-by: Anna Schumaker --- fs/nfs/nfs4state.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index daeb94e3acd4..8156bad6b441 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -868,7 +868,7 @@ static struct nfs4_lock_state *nfs4_get_lock_state(struct nfs4_state *state, fl_ for(;;) { spin_lock(&state->state_lock); - lsp = __nfs4_find_lock_state(state, owner, 0); + lsp = __nfs4_find_lock_state(state, owner, NULL); if (lsp != NULL) break; if (new != NULL) { -- cgit v1.2.3 From 920b4530fb80430ff30ef83efe21ba1fa5623731 Mon Sep 17 00:00:00 2001 From: Benjamin Coddington Date: Wed, 1 Feb 2017 00:00:07 -0500 Subject: NFS: nfs_rename() handle -ERESTARTSYS dentry left behind An interrupted rename will leave the old dentry behind if the rename succeeds. Fix this by moving the final local work of the rename to rpc_call_done so that the results of the RENAME can always be handled, even if the original process has already returned with -ERESTARTSYS. Signed-off-by: Benjamin Coddington Signed-off-by: Anna Schumaker --- fs/nfs/dir.c | 36 +++++++++++++++++++++++++----------- 1 file changed, 25 insertions(+), 11 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index fad81041f5ab..fb499a3f21b5 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -2002,6 +2002,29 @@ nfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry) } EXPORT_SYMBOL_GPL(nfs_link); +static void +nfs_complete_rename(struct rpc_task *task, struct nfs_renamedata *data) +{ + struct dentry *old_dentry = data->old_dentry; + struct dentry *new_dentry = data->new_dentry; + struct inode *old_inode = d_inode(old_dentry); + struct inode *new_inode = d_inode(new_dentry); + + nfs_mark_for_revalidate(old_inode); + + switch (task->tk_status) { + case 0: + if (new_inode != NULL) + nfs_drop_nlink(new_inode); + d_move(old_dentry, new_dentry); + nfs_set_verifier(new_dentry, + nfs_save_change_attribute(data->new_dir)); + break; + case -ENOENT: + nfs_dentry_handle_enoent(old_dentry); + } +} + /* * RENAME * FIXME: Some nfsds, like the Linux user space nfsd, may generate a @@ -2084,7 +2107,8 @@ int nfs_rename(struct inode *old_dir, struct dentry *old_dentry, if (new_inode != NULL) NFS_PROTO(new_inode)->return_delegation(new_inode); - task = nfs_async_rename(old_dir, new_dir, old_dentry, new_dentry, NULL); + task = nfs_async_rename(old_dir, new_dir, old_dentry, new_dentry, + nfs_complete_rename); if (IS_ERR(task)) { error = PTR_ERR(task); goto out; @@ -2094,21 +2118,11 @@ int nfs_rename(struct inode *old_dir, struct dentry *old_dentry, if (error == 0) error = task->tk_status; rpc_put_task(task); - nfs_mark_for_revalidate(old_inode); out: if (rehash) d_rehash(rehash); trace_nfs_rename_exit(old_dir, old_dentry, new_dir, new_dentry, error); - if (!error) { - if (new_inode != NULL) - nfs_drop_nlink(new_inode); - d_move(old_dentry, new_dentry); - nfs_set_verifier(new_dentry, - nfs_save_change_attribute(new_dir)); - } else if (error == -ENOENT) - nfs_dentry_handle_enoent(old_dentry); - /* new dentry created? */ if (dentry) dput(dentry); -- cgit v1.2.3 From 600424e3d91be7c6c8c38b95db713983a6307efa Mon Sep 17 00:00:00 2001 From: Nicholas Piggin Date: Wed, 4 Jan 2017 04:22:33 +1000 Subject: nfs: no PG_private waiters remain, remove waker Since commit 4f52b6bb ("NFS: Don't call COMMIT in ->releasepage()"), no tasks wait on PagePrivate, so the wake introduced in commit 95905446 ("NFS: avoid deadlocks with loop-back mounted NFS filesystems.") can be removed. Signed-off-by: Nicholas Piggin Signed-off-by: Anna Schumaker --- fs/nfs/write.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/write.c b/fs/nfs/write.c index ad4219a41f25..e75b056f46f4 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -728,8 +728,6 @@ static void nfs_inode_remove_request(struct nfs_page *req) if (likely(head->wb_page && !PageSwapCache(head->wb_page))) { set_page_private(head->wb_page, 0); ClearPagePrivate(head->wb_page); - smp_mb__after_atomic(); - wake_up_page(head->wb_page, PG_private); clear_bit(PG_MAPPED, &head->wb_flags); } nfsi->nrequests--; -- cgit v1.2.3 From 863d7d9c2e0cbbde6cd15f87c4431dd806f2d917 Mon Sep 17 00:00:00 2001 From: Kinglong Mee Date: Tue, 7 Feb 2017 21:47:16 +0800 Subject: sunrpc/nfs: cleanup procfs/pipefs entry in cache_detail Record flush/channel/content entries is useless, remove them. Signed-off-by: Kinglong Mee Signed-off-by: Anna Schumaker --- fs/nfs/cache_lib.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/cache_lib.c b/fs/nfs/cache_lib.c index 6de15709d024..2ae676f93e6b 100644 --- a/fs/nfs/cache_lib.c +++ b/fs/nfs/cache_lib.c @@ -141,8 +141,7 @@ int nfs_cache_register_net(struct net *net, struct cache_detail *cd) void nfs_cache_unregister_sb(struct super_block *sb, struct cache_detail *cd) { - if (cd->u.pipefs.dir) - sunrpc_cache_unregister_pipefs(cd); + sunrpc_cache_unregister_pipefs(cd); } void nfs_cache_unregister_net(struct net *net, struct cache_detail *cd) -- cgit v1.2.3 From a974deee477af89411e0f80456bfb344ac433c98 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Wed, 8 Feb 2017 11:29:46 -0500 Subject: NFSv4: Fix memory and state leak in _nfs4_open_and_get_state If we exit because the file access check failed, we currently leak the struct nfs4_state. We need to attach it to the open context before returning. Fixes: 3efb9722475e ("NFSv4: Refactor _nfs4_open_and_get_state..") Cc: stable@vger.kernel.org # 3.10+ Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index aeaa6678b071..45271e5994f0 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2624,6 +2624,7 @@ static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, ret = PTR_ERR(state); if (IS_ERR(state)) goto out; + ctx->state = state; 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) @@ -2649,7 +2650,6 @@ static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, if (ret != 0) goto out; - ctx->state = state; if (d_inode(dentry) == state->inode) { nfs_inode_attach_open_context(ctx); if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq)) -- cgit v1.2.3 From 26ae102f2cfd0215daa57dc790aa3bfe534403a9 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Wed, 8 Feb 2017 11:17:55 -0500 Subject: NFSv4: Set the connection timeout to match the lease period Set the timeout for TCP connections to be 1 lease period to ensure that we don't lose our lease due to a faulty TCP connection. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/nfs4renewd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4renewd.c b/fs/nfs/nfs4renewd.c index 82e77198d17e..1f8c2ae43a8d 100644 --- a/fs/nfs/nfs4renewd.c +++ b/fs/nfs/nfs4renewd.c @@ -153,7 +153,7 @@ void nfs4_set_lease_period(struct nfs_client *clp, spin_unlock(&clp->cl_lock); /* Cap maximum reconnect timeout at 1/2 lease period */ - rpc_cap_max_reconnect_timeout(clp->cl_rpcclient, lease >> 1); + rpc_set_connect_timeout(clp->cl_rpcclient, lease, lease >> 1); } /* -- cgit v1.2.3 From ab6e9aaf16cfdfca630f9745fd6d453818df7f64 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 19 Feb 2017 16:08:26 -0500 Subject: NFSv4: Replace ad-hoc xdr encode/decode helpers with xdr_stream_* generics Signed-off-by: Trond Myklebust Reviewed-by: Chuck Lever Signed-off-by: Anna Schumaker --- fs/nfs/callback_xdr.c | 8 ++------ fs/nfs/flexfilelayout/flexfilelayout.c | 5 +---- fs/nfs/nfs4xdr.c | 33 +++++++++------------------------ 3 files changed, 12 insertions(+), 34 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c index eb094c6011d8..e732a65db546 100644 --- a/fs/nfs/callback_xdr.c +++ b/fs/nfs/callback_xdr.c @@ -582,12 +582,8 @@ out: static __be32 encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) { - __be32 *p; - - p = xdr_reserve_space(xdr, 4 + len); - if (unlikely(p == NULL)) - return htonl(NFS4ERR_RESOURCE); - xdr_encode_opaque(p, str, len); + if (unlikely(xdr_stream_encode_opaque(xdr, str, len) < 0)) + return cpu_to_be32(NFS4ERR_RESOURCE); return 0; } diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c index 6104696325be..7b5f37f5ddf1 100644 --- a/fs/nfs/flexfilelayout/flexfilelayout.c +++ b/fs/nfs/flexfilelayout/flexfilelayout.c @@ -1949,10 +1949,7 @@ static int ff_layout_encode_ioerr(struct xdr_stream *xdr, static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len) { - __be32 *p; - - p = xdr_reserve_space(xdr, len); - xdr_encode_opaque_fixed(p, buf, len); + WARN_ON_ONCE(xdr_stream_encode_opaque_fixed(xdr, buf, len) < 0); } static void diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index e9255cb453e6..5f0a6fcd0030 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -924,34 +924,22 @@ static __be32 *reserve_space(struct xdr_stream *xdr, size_t nbytes) static void encode_opaque_fixed(struct xdr_stream *xdr, const void *buf, size_t len) { - __be32 *p; - - p = xdr_reserve_space(xdr, len); - xdr_encode_opaque_fixed(p, buf, len); + WARN_ON_ONCE(xdr_stream_encode_opaque_fixed(xdr, buf, len) < 0); } static void encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) { - __be32 *p; - - p = reserve_space(xdr, 4 + len); - xdr_encode_opaque(p, str, len); + WARN_ON_ONCE(xdr_stream_encode_opaque(xdr, str, len) < 0); } static void encode_uint32(struct xdr_stream *xdr, u32 n) { - __be32 *p; - - p = reserve_space(xdr, 4); - *p = cpu_to_be32(n); + WARN_ON_ONCE(xdr_stream_encode_u32(xdr, n) < 0); } static void encode_uint64(struct xdr_stream *xdr, u64 n) { - __be32 *p; - - p = reserve_space(xdr, 8); - xdr_encode_hyper(p, n); + WARN_ON_ONCE(xdr_stream_encode_u64(xdr, n) < 0); } static void encode_nfs4_seqid(struct xdr_stream *xdr, @@ -4294,15 +4282,12 @@ out_overflow: static int decode_opaque_fixed(struct xdr_stream *xdr, void *buf, size_t len) { - __be32 *p; - - p = xdr_inline_decode(xdr, len); - if (likely(p)) { - memcpy(buf, p, len); - return 0; + ssize_t ret = xdr_stream_decode_opaque_fixed(xdr, buf, len); + if (unlikely(ret < 0)) { + print_overflow_msg(__func__, xdr); + return -EIO; } - print_overflow_msg(__func__, xdr); - return -EIO; + return 0; } static int decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) -- cgit v1.2.3 From 6da59ce2fd2047fd9cb141479f20d5f84614e84f Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 19 Feb 2017 16:08:27 -0500 Subject: NFSv4: Replace the open coded decode_opaque_inline() with the new generic Also ensure that we always check that the size of the decoded object matches the expectation that it must be smaller than NFS4_OPAQUE_LIMIT. This should be true for all the current users of decode_opaque_inline(), including decode_ace(), decode_pathname(), decode_attr_fs_locations() and decode_exchange_id(). Note that this allows us to get rid of a number of existing checks in decode_exchange_id(), Signed-off-by: Trond Myklebust Reviewed-by: Chuck Lever Signed-off-by: Anna Schumaker --- fs/nfs/nfs4xdr.c | 29 ++++++++--------------------- 1 file changed, 8 insertions(+), 21 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 5f0a6fcd0030..d10cc2a62dff 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -3050,20 +3050,15 @@ static void print_overflow_msg(const char *func, const struct xdr_stream *xdr) static int decode_opaque_inline(struct xdr_stream *xdr, unsigned int *len, char **string) { - __be32 *p; - - p = xdr_inline_decode(xdr, 4); - if (unlikely(!p)) - goto out_overflow; - *len = be32_to_cpup(p); - p = xdr_inline_decode(xdr, *len); - if (unlikely(!p)) - goto out_overflow; - *string = (char *)p; + ssize_t ret = xdr_stream_decode_opaque_inline(xdr, (void **)string, + NFS4_OPAQUE_LIMIT); + if (unlikely(ret < 0)) { + if (ret == -EBADMSG) + print_overflow_msg(__func__, xdr); + return -EIO; + } + *len = ret; return 0; -out_overflow: - print_overflow_msg(__func__, xdr); - return -EIO; } static int decode_compound_hdr(struct xdr_stream *xdr, struct compound_hdr *hdr) @@ -5645,8 +5640,6 @@ static int decode_exchange_id(struct xdr_stream *xdr, status = decode_opaque_inline(xdr, &dummy, &dummy_str); if (unlikely(status)) return status; - if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) - return -EIO; memcpy(res->server_owner->major_id, dummy_str, dummy); res->server_owner->major_id_sz = dummy; @@ -5654,8 +5647,6 @@ static int decode_exchange_id(struct xdr_stream *xdr, status = decode_opaque_inline(xdr, &dummy, &dummy_str); if (unlikely(status)) return status; - if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) - return -EIO; memcpy(res->server_scope->server_scope, dummy_str, dummy); res->server_scope->server_scope_sz = dummy; @@ -5670,16 +5661,12 @@ static int decode_exchange_id(struct xdr_stream *xdr, status = decode_opaque_inline(xdr, &dummy, &dummy_str); if (unlikely(status)) return status; - if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) - return -EIO; memcpy(res->impl_id->domain, dummy_str, dummy); /* nii_name */ status = decode_opaque_inline(xdr, &dummy, &dummy_str); if (unlikely(status)) return status; - if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) - return -EIO; memcpy(res->impl_id->name, dummy_str, dummy); /* nii_date */ -- cgit v1.2.3 From c065eeea3ba03232cb8aaf9d3dc7ad0a9fcb267b Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 19 Feb 2017 16:08:28 -0500 Subject: NFSv4: Replace callback string decode function with a generic Signed-off-by: Trond Myklebust Reviewed-by: Chuck Lever Signed-off-by: Anna Schumaker --- fs/nfs/callback_xdr.c | 30 ++++++++---------------------- 1 file changed, 8 insertions(+), 22 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c index e732a65db546..2ade5cb52b8e 100644 --- a/fs/nfs/callback_xdr.c +++ b/fs/nfs/callback_xdr.c @@ -83,23 +83,15 @@ static __be32 *read_buf(struct xdr_stream *xdr, size_t nbytes) return p; } -static __be32 decode_string(struct xdr_stream *xdr, unsigned int *len, const char **str) +static __be32 decode_string(struct xdr_stream *xdr, unsigned int *len, + const char **str, size_t maxlen) { - __be32 *p; - - p = read_buf(xdr, 4); - if (unlikely(p == NULL)) - return htonl(NFS4ERR_RESOURCE); - *len = ntohl(*p); - - if (*len != 0) { - p = read_buf(xdr, *len); - if (unlikely(p == NULL)) - return htonl(NFS4ERR_RESOURCE); - *str = (const char *)p; - } else - *str = NULL; + ssize_t err; + err = xdr_stream_decode_opaque_inline(xdr, (void **)str, maxlen); + if (err < 0) + return cpu_to_be32(NFS4ERR_RESOURCE); + *len = err; return 0; } @@ -162,15 +154,9 @@ static __be32 decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound __be32 *p; __be32 status; - status = decode_string(xdr, &hdr->taglen, &hdr->tag); + status = decode_string(xdr, &hdr->taglen, &hdr->tag, CB_OP_TAGLEN_MAXSZ); if (unlikely(status != 0)) return status; - /* We do not like overly long tags! */ - if (hdr->taglen > CB_OP_TAGLEN_MAXSZ) { - printk("NFS: NFSv4 CALLBACK %s: client sent tag of length %u\n", - __func__, hdr->taglen); - return htonl(NFS4ERR_RESOURCE); - } p = read_buf(xdr, 12); if (unlikely(p == NULL)) return htonl(NFS4ERR_RESOURCE); -- cgit v1.2.3 From 5a1f6d9e9b803003271b40b67786ff46fa4eda01 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 19 Feb 2017 16:08:29 -0500 Subject: NFSv4: Fix the underestimation of delegation XDR space reservation Account for the "space_limit" field in struct open_write_delegation4. Fixes: 2cebf82883f4 ("NFSv4: Fix the underestimate of NFSv4 open request size") Signed-off-by: Trond Myklebust Reviewed-by: Chuck Lever Signed-off-by: Anna Schumaker --- fs/nfs/nfs4xdr.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index d10cc2a62dff..26808fbaacb0 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -169,8 +169,10 @@ static int nfs4_stat_to_errno(int); open_owner_id_maxsz + \ encode_opentype_maxsz + \ encode_claim_null_maxsz) +#define decode_space_limit_maxsz (3) #define decode_ace_maxsz (3 + nfs4_owner_maxsz) #define decode_delegation_maxsz (1 + decode_stateid_maxsz + 1 + \ + decode_space_limit_maxsz + \ decode_ace_maxsz) #define decode_change_info_maxsz (5) #define decode_open_maxsz (op_decode_hdr_maxsz + \ -- cgit v1.2.3 From 1bbe60ff49becd7554e9b32b5e8e6fcee4b33db2 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 19 Feb 2017 16:08:30 -0500 Subject: NFSv4: Remove bogus "struct nfs_client" argument from decode_ace() We shouldn't need to force callers to carry an unused argument. Signed-off-by: Trond Myklebust Reviewed-by: Chuck Lever Signed-off-by: Anna Schumaker --- fs/nfs/nfs4xdr.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 26808fbaacb0..ec0d76712e43 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -3127,7 +3127,7 @@ static int decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected) } /* Dummy routine */ -static int decode_ace(struct xdr_stream *xdr, void *ace, struct nfs_client *clp) +static int decode_ace(struct xdr_stream *xdr, void *ace) { __be32 *p; unsigned int strlen; @@ -5075,7 +5075,7 @@ static int decode_rw_delegation(struct xdr_stream *xdr, if (decode_space_limit(xdr, &res->pagemod_limit) < 0) return -EIO; } - return decode_ace(xdr, NULL, res->server->nfs_client); + return decode_ace(xdr, NULL); out_overflow: print_overflow_msg(__func__, xdr); return -EIO; -- cgit v1.2.3 From 686a816ab6bedb99a892f3171f6c9ccecabff180 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sun, 19 Feb 2017 16:08:32 -0500 Subject: NFSv4: Clean up owner/group attribute decode Signed-off-by: Trond Myklebust Reviewed-by: Chuck Lever Signed-off-by: Anna Schumaker --- fs/nfs/nfs4xdr.c | 117 +++++++++++++++++++++++++++---------------------------- 1 file changed, 57 insertions(+), 60 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index ec0d76712e43..3268a2393512 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -3875,45 +3875,50 @@ out_overflow: return -EIO; } +static ssize_t decode_nfs4_string(struct xdr_stream *xdr, + struct nfs4_string *name, gfp_t gfp_flags) +{ + ssize_t ret; + + ret = xdr_stream_decode_string_dup(xdr, &name->data, + XDR_MAX_NETOBJ, gfp_flags); + name->len = 0; + if (ret > 0) + name->len = ret; + return ret; +} + static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, const struct nfs_server *server, kuid_t *uid, struct nfs4_string *owner_name) { - uint32_t len; - __be32 *p; - int ret = 0; + ssize_t len; + char *p; *uid = make_kuid(&init_user_ns, -2); if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER - 1U))) return -EIO; - if (likely(bitmap[1] & FATTR4_WORD1_OWNER)) { - p = xdr_inline_decode(xdr, 4); - if (unlikely(!p)) - goto out_overflow; - len = be32_to_cpup(p); - p = xdr_inline_decode(xdr, len); - if (unlikely(!p)) - goto out_overflow; - if (owner_name != NULL) { - owner_name->data = kmemdup(p, len, GFP_NOWAIT); - if (owner_name->data != NULL) { - owner_name->len = len; - ret = NFS_ATTR_FATTR_OWNER_NAME; - } - } else if (len < XDR_MAX_NETOBJ) { - if (nfs_map_name_to_uid(server, (char *)p, len, uid) == 0) - ret = NFS_ATTR_FATTR_OWNER; - else - dprintk("%s: nfs_map_name_to_uid failed!\n", - __func__); - } else - dprintk("%s: name too long (%u)!\n", - __func__, len); - bitmap[1] &= ~FATTR4_WORD1_OWNER; + if (!(bitmap[1] & FATTR4_WORD1_OWNER)) + return 0; + bitmap[1] &= ~FATTR4_WORD1_OWNER; + + if (owner_name != NULL) { + len = decode_nfs4_string(xdr, owner_name, GFP_NOWAIT); + if (len <= 0) + goto out; + dprintk("%s: name=%s\n", __func__, owner_name->data); + return NFS_ATTR_FATTR_OWNER_NAME; + } else { + len = xdr_stream_decode_opaque_inline(xdr, (void **)&p, + XDR_MAX_NETOBJ); + if (len <= 0 || nfs_map_name_to_uid(server, p, len, uid) != 0) + goto out; + dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid)); + return NFS_ATTR_FATTR_OWNER; } - dprintk("%s: uid=%d\n", __func__, (int)from_kuid(&init_user_ns, *uid)); - return ret; -out_overflow: +out: + if (len != -EBADMSG) + return 0; print_overflow_msg(__func__, xdr); return -EIO; } @@ -3922,41 +3927,33 @@ static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, const struct nfs_server *server, kgid_t *gid, struct nfs4_string *group_name) { - uint32_t len; - __be32 *p; - int ret = 0; + ssize_t len; + char *p; *gid = make_kgid(&init_user_ns, -2); if (unlikely(bitmap[1] & (FATTR4_WORD1_OWNER_GROUP - 1U))) return -EIO; - if (likely(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) { - p = xdr_inline_decode(xdr, 4); - if (unlikely(!p)) - goto out_overflow; - len = be32_to_cpup(p); - p = xdr_inline_decode(xdr, len); - if (unlikely(!p)) - goto out_overflow; - if (group_name != NULL) { - group_name->data = kmemdup(p, len, GFP_NOWAIT); - if (group_name->data != NULL) { - group_name->len = len; - ret = NFS_ATTR_FATTR_GROUP_NAME; - } - } else if (len < XDR_MAX_NETOBJ) { - if (nfs_map_group_to_gid(server, (char *)p, len, gid) == 0) - ret = NFS_ATTR_FATTR_GROUP; - else - dprintk("%s: nfs_map_group_to_gid failed!\n", - __func__); - } else - dprintk("%s: name too long (%u)!\n", - __func__, len); - bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP; + if (!(bitmap[1] & FATTR4_WORD1_OWNER_GROUP)) + return 0; + bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP; + + if (group_name != NULL) { + len = decode_nfs4_string(xdr, group_name, GFP_NOWAIT); + if (len <= 0) + goto out; + dprintk("%s: name=%s\n", __func__, group_name->data); + return NFS_ATTR_FATTR_OWNER_NAME; + } else { + len = xdr_stream_decode_opaque_inline(xdr, (void **)&p, + XDR_MAX_NETOBJ); + if (len <= 0 || nfs_map_group_to_gid(server, p, len, gid) != 0) + goto out; + dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid)); + return NFS_ATTR_FATTR_GROUP; } - dprintk("%s: gid=%d\n", __func__, (int)from_kgid(&init_user_ns, *gid)); - return ret; -out_overflow: +out: + if (len != -EBADMSG) + return 0; print_overflow_msg(__func__, xdr); return -EIO; } -- cgit v1.2.3 From df3ab232e462bce20710596d697ade6b72497694 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 17 Feb 2017 19:49:09 -0500 Subject: pNFS/flexfiles: If the layout is invalid, it must be updated before retrying If we see that our pNFS READ/WRITE/COMMIT operation failed, but we also see that our layout segment is no longer valid, then we need to get a new layout segment before retrying. Fixes: 90816d1ddacf ("NFSv4.1/flexfiles: Don't mark the entire deviceid...") Cc: stable@vger.kernel.org # v4.2+ Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/flexfilelayout/flexfilelayout.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c index 7b5f37f5ddf1..78f9a3081127 100644 --- a/fs/nfs/flexfilelayout/flexfilelayout.c +++ b/fs/nfs/flexfilelayout/flexfilelayout.c @@ -1053,9 +1053,6 @@ static int ff_layout_async_handle_error_v4(struct rpc_task *task, struct nfs_client *mds_client = mds_server->nfs_client; struct nfs4_slot_table *tbl = &clp->cl_session->fc_slot_table; - if (task->tk_status >= 0) - return 0; - switch (task->tk_status) { /* MDS state errors */ case -NFS4ERR_DELEG_REVOKED: @@ -1157,9 +1154,6 @@ static int ff_layout_async_handle_error_v3(struct rpc_task *task, { struct nfs4_deviceid_node *devid = FF_LAYOUT_DEVID_NODE(lseg, idx); - if (task->tk_status >= 0) - return 0; - switch (task->tk_status) { /* File access problems. Don't mark the device as unavailable */ case -EACCES: @@ -1195,6 +1189,13 @@ static int ff_layout_async_handle_error(struct rpc_task *task, { int vers = clp->cl_nfs_mod->rpc_vers->number; + if (task->tk_status >= 0) + return 0; + + /* Handle the case of an invalid layout segment */ + if (!pnfs_is_valid_lseg(lseg)) + return -NFS4ERR_RESET_TO_PNFS; + switch (vers) { case 3: return ff_layout_async_handle_error_v3(task, lseg, idx); -- cgit v1.2.3 From 9d8cacbf5636657d2cd0dda17438a56d806d3224 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 17 Feb 2017 18:42:32 -0500 Subject: NFSv4: Fix reboot recovery in copy offload Copy offload code needs to be hooked into the code for handling NFS4ERR_BAD_STATEID by ensuring that we set the "stateid" field in struct nfs4_exception. Reported-by: Olga Kornievskaia Fixes: 2e72448b07dc3 ("NFS: Add COPY nfs operation") Signed-off-by: Trond Myklebust Cc: stable@vger.kernel.org # v4.7+ Signed-off-by: Anna Schumaker --- fs/nfs/nfs42proc.c | 63 ++++++++++++++++++++++++++++++++---------------------- 1 file changed, 37 insertions(+), 26 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c index 98cf58341066..1e486c73ec94 100644 --- a/fs/nfs/nfs42proc.c +++ b/fs/nfs/nfs42proc.c @@ -129,30 +129,26 @@ out_unlock: return err; } -static ssize_t _nfs42_proc_copy(struct file *src, loff_t pos_src, +static ssize_t _nfs42_proc_copy(struct file *src, struct nfs_lock_context *src_lock, - struct file *dst, loff_t pos_dst, + struct file *dst, struct nfs_lock_context *dst_lock, - size_t count) + struct nfs42_copy_args *args, + struct nfs42_copy_res *res) { - struct nfs42_copy_args args = { - .src_fh = NFS_FH(file_inode(src)), - .src_pos = pos_src, - .dst_fh = NFS_FH(file_inode(dst)), - .dst_pos = pos_dst, - .count = count, - }; - struct nfs42_copy_res res; struct rpc_message msg = { .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COPY], - .rpc_argp = &args, - .rpc_resp = &res, + .rpc_argp = args, + .rpc_resp = res, }; struct inode *dst_inode = file_inode(dst); struct nfs_server *server = NFS_SERVER(dst_inode); + loff_t pos_src = args->src_pos; + loff_t pos_dst = args->dst_pos; + size_t count = args->count; int status; - status = nfs4_set_rw_stateid(&args.src_stateid, src_lock->open_context, + status = nfs4_set_rw_stateid(&args->src_stateid, src_lock->open_context, src_lock, FMODE_READ); if (status) return status; @@ -162,7 +158,7 @@ static ssize_t _nfs42_proc_copy(struct file *src, loff_t pos_src, if (status) return status; - status = nfs4_set_rw_stateid(&args.dst_stateid, dst_lock->open_context, + status = nfs4_set_rw_stateid(&args->dst_stateid, dst_lock->open_context, dst_lock, FMODE_WRITE); if (status) return status; @@ -172,22 +168,22 @@ static ssize_t _nfs42_proc_copy(struct file *src, loff_t pos_src, return status; status = nfs4_call_sync(server->client, server, &msg, - &args.seq_args, &res.seq_res, 0); + &args->seq_args, &res->seq_res, 0); if (status == -ENOTSUPP) server->caps &= ~NFS_CAP_COPY; if (status) return status; - if (res.write_res.verifier.committed != NFS_FILE_SYNC) { - status = nfs_commit_file(dst, &res.write_res.verifier.verifier); + if (res->write_res.verifier.committed != NFS_FILE_SYNC) { + status = nfs_commit_file(dst, &res->write_res.verifier.verifier); if (status) return status; } truncate_pagecache_range(dst_inode, pos_dst, - pos_dst + res.write_res.count); + pos_dst + res->write_res.count); - return res.write_res.count; + return res->write_res.count; } ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src, @@ -197,8 +193,22 @@ ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src, struct nfs_server *server = NFS_SERVER(file_inode(dst)); struct nfs_lock_context *src_lock; struct nfs_lock_context *dst_lock; - struct nfs4_exception src_exception = { }; - struct nfs4_exception dst_exception = { }; + struct nfs42_copy_args args = { + .src_fh = NFS_FH(file_inode(src)), + .src_pos = pos_src, + .dst_fh = NFS_FH(file_inode(dst)), + .dst_pos = pos_dst, + .count = count, + }; + struct nfs42_copy_res res; + struct nfs4_exception src_exception = { + .inode = file_inode(src), + .stateid = &args.src_stateid, + }; + struct nfs4_exception dst_exception = { + .inode = file_inode(dst), + .stateid = &args.dst_stateid, + }; ssize_t err, err2; if (!nfs_server_capable(file_inode(dst), NFS_CAP_COPY)) @@ -208,7 +218,6 @@ ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src, if (IS_ERR(src_lock)) return PTR_ERR(src_lock); - src_exception.inode = file_inode(src); src_exception.state = src_lock->open_context->state; dst_lock = nfs_get_lock_context(nfs_file_open_context(dst)); @@ -217,15 +226,17 @@ ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src, goto out_put_src_lock; } - dst_exception.inode = file_inode(dst); dst_exception.state = dst_lock->open_context->state; do { inode_lock(file_inode(dst)); - err = _nfs42_proc_copy(src, pos_src, src_lock, - dst, pos_dst, dst_lock, count); + err = _nfs42_proc_copy(src, src_lock, + dst, dst_lock, + &args, &res); inode_unlock(file_inode(dst)); + if (err >= 0) + break; if (err == -ENOTSUPP) { err = -EOPNOTSUPP; break; -- cgit v1.2.3 From a5e14c9376871ee74fe93fdcb380c5d54eaa2d43 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 17 Feb 2017 19:50:18 -0500 Subject: Revert "NFSv4.1: Handle NFS4ERR_BADSESSION/NFS4ERR_DEADSESSION replies to OP_SEQUENCE" This reverts commit 2cf10cdd486c362f983abdce00dc1127e8ab8c59. The patch has been seen to cause excessive looping. Reported-by: Olga Kornievskaia Signed-off-by: Trond Myklebust Cc: stable@vger.kernel.org # 4.10+ Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 4 ---- 1 file changed, 4 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 45271e5994f0..92b2805ffb82 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -768,10 +768,6 @@ static int nfs41_sequence_process(struct rpc_task *task, case -NFS4ERR_SEQ_FALSE_RETRY: ++slot->seq_nr; goto retry_nowait; - case -NFS4ERR_DEADSESSION: - case -NFS4ERR_BADSESSION: - nfs4_schedule_session_recovery(session, res->sr_status); - goto retry_nowait; default: /* Just update the slot sequence no. */ slot->seq_done = 1; -- cgit v1.2.3 From 6682c14bbe505a8b912c57faf544f866777ee48d Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Thu, 23 Feb 2017 14:53:39 -0500 Subject: NFSv4: fix getacl head length estimation Bitmap and attrlen follow immediately after the op reply header. This was an oversight from commit bf118a342f. Consequences of this are just minor efficiency (extra calls to xdr_shrink_bufhead). Fixes: bf118a342f10 "NFSv4: include bitmap in nfsv4 get acl data" Reviewed-by: Kinglong Mee Cc: stable@vger.kernel.org Signed-off-by: J. Bruce Fields Signed-off-by: Anna Schumaker --- fs/nfs/nfs4xdr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 3268a2393512..f0369e362753 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -2514,7 +2514,7 @@ static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr, encode_compound_hdr(xdr, req, &hdr); encode_sequence(xdr, &args->seq_args, &hdr); encode_putfh(xdr, args->fh, &hdr); - replen = hdr.replen + op_decode_hdr_maxsz + 1; + replen = hdr.replen + op_decode_hdr_maxsz; encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr); xdr_inline_pages(&req->rq_rcv_buf, replen << 2, -- cgit v1.2.3 From ed92d8c137b7794c2c2aa14479298b9885967607 Mon Sep 17 00:00:00 2001 From: Weston Andros Adamson Date: Thu, 23 Feb 2017 14:54:21 -0500 Subject: NFSv4: fix getacl ERANGE for some ACL buffer sizes We're not taking into account that the space needed for the (variable length) attr bitmap, with the result that we'd sometimes get a spurious ERANGE when the ACL data got close to the end of a page. Just add in an extra page to make sure. Signed-off-by: Weston Andros Adamson Cc: stable@vger.kernel.org Signed-off-by: J. Bruce Fields Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) (limited to 'fs/nfs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 92b2805ffb82..1b183686c6d4 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -4954,7 +4954,7 @@ out: */ static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) { - struct page *pages[NFS4ACL_MAXPAGES] = {NULL, }; + struct page *pages[NFS4ACL_MAXPAGES + 1] = {NULL, }; struct nfs_getaclargs args = { .fh = NFS_FH(inode), .acl_pages = pages, @@ -4968,13 +4968,9 @@ static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t bu .rpc_argp = &args, .rpc_resp = &res, }; - unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); + unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE) + 1; int ret = -ENOMEM, i; - /* As long as we're doing a round trip to the server anyway, - * let's be prepared for a page of acl data. */ - if (npages == 0) - npages = 1; if (npages > ARRAY_SIZE(pages)) return -ERANGE; -- cgit v1.2.3