From 41a74620185e2c7666c0fc4bfd7ff2f21fd0cb13 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Sun, 18 Mar 2018 08:37:01 -0400 Subject: nfs4: always reset notified flag to false before repolling for lock We may get a notification and lose the race to another client. Ensure that we wait again for a notification in that case. Signed-off-by: Jeff Layton Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 1 + 1 file changed, 1 insertion(+) (limited to 'fs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 47f3c273245e..5ab28454f117 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -6673,6 +6673,7 @@ nfs4_retry_setlk(struct nfs4_state *state, int cmd, struct file_lock *request) add_wait_queue(q, &wait); while(!signalled()) { + waiter.notified = false; status = nfs4_proc_setlk(state, cmd, request); if ((status != -EAGAIN) || IS_SETLK(cmd)) break; -- cgit From 5656610325a926141625e2d5eed1b0ba57a2e4cb Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Sun, 18 Mar 2018 08:37:02 -0400 Subject: nfs4: don't compare clientid in nfs4_wake_lock_waiter The task is expected to sleep for a while here, and it's possible that a new EXCHANGE_ID has occurred in the interim, and we were assigned a new clientid. Since this is a per-client list, there isn't a lot of value in vetting the clientid on the incoming request. Signed-off-by: Jeff Layton Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) (limited to 'fs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 5ab28454f117..669ba9211177 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -6626,10 +6626,8 @@ nfs4_wake_lock_waiter(wait_queue_entry_t *wait, unsigned int mode, int flags, vo struct nfs_lowner *lowner = &cbnl->cbnl_owner, *wowner = waiter->owner; - /* Only wake if the callback was for the same owner */ - if (lowner->clientid != wowner->clientid || - lowner->id != wowner->id || - lowner->s_dev != wowner->s_dev) + /* Only wake if the callback was for the same owner. */ + if (lowner->id != wowner->id || lowner->s_dev != wowner->s_dev) return 0; /* Make sure it's for the right inode */ -- cgit From 571745935b2ec276345faec81af732fb9f51082b Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Sun, 18 Mar 2018 08:37:03 -0400 Subject: nfs4: wake any lock waiters on successful RECLAIM_COMPLETE If we have a RECLAIM_COMPLETE with a populated cl_lock_waitq, then that implies that a reconnect has occurred. Since we can't expect a CB_NOTIFY_LOCK callback at that point, just wake up the entire queue so that all the tasks can re-poll for their locks. Signed-off-by: Jeff Layton Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 26 ++++++++++++++++---------- 1 file changed, 16 insertions(+), 10 deletions(-) (limited to 'fs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 669ba9211177..ec68edce6cc3 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -6621,20 +6621,24 @@ static int nfs4_wake_lock_waiter(wait_queue_entry_t *wait, unsigned int mode, int flags, void *key) { int ret; - struct cb_notify_lock_args *cbnl = key; struct nfs4_lock_waiter *waiter = wait->private; - struct nfs_lowner *lowner = &cbnl->cbnl_owner, - *wowner = waiter->owner; - /* Only wake if the callback was for the same owner. */ - if (lowner->id != wowner->id || lowner->s_dev != wowner->s_dev) - return 0; + /* NULL key means to wake up everyone */ + if (key) { + struct cb_notify_lock_args *cbnl = key; + struct nfs_lowner *lowner = &cbnl->cbnl_owner, + *wowner = waiter->owner; - /* Make sure it's for the right inode */ - if (nfs_compare_fh(NFS_FH(waiter->inode), &cbnl->cbnl_fh)) - return 0; + /* Only wake if the callback was for the same owner. */ + if (lowner->id != wowner->id || lowner->s_dev != wowner->s_dev) + return 0; - waiter->notified = true; + /* Make sure it's for the right inode */ + if (nfs_compare_fh(NFS_FH(waiter->inode), &cbnl->cbnl_fh)) + return 0; + + waiter->notified = true; + } /* override "private" so we can use default_wake_function */ wait->private = waiter->task; @@ -8413,6 +8417,8 @@ static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nf { switch(task->tk_status) { case 0: + wake_up_all(&clp->cl_lock_waitq); + /* Fallthrough */ case -NFS4ERR_COMPLETE_ALREADY: case -NFS4ERR_WRONG_CRED: /* What to do here? */ break; -- cgit From f50862423f547f8506d69b6e4fc53be53288244c Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 20 Mar 2018 16:43:13 -0400 Subject: NFSv4: Fix nfs4_return_incompatible_delegation The 'fmode' argument can take an FMODE_EXEC value, which we want to filter out before comparing to the delegation type. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 1 + 1 file changed, 1 insertion(+) (limited to 'fs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index ec68edce6cc3..71f2916f93ff 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -1669,6 +1669,7 @@ static void nfs4_return_incompatible_delegation(struct inode *inode, fmode_t fmo { struct nfs_delegation *delegation; + fmode &= FMODE_READ|FMODE_WRITE; rcu_read_lock(); delegation = rcu_dereference(NFS_I(inode)->delegation); if (delegation == NULL || (delegation->type & fmode) == fmode) { -- cgit From 9f7682728728114ed99d8f127f0e1ce3ef9ba857 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 20 Mar 2018 16:43:14 -0400 Subject: NFS: Move the delegation return down into nfs4_proc_link() Move the delegation return out of generic code. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/dir.c | 2 -- fs/nfs/nfs4proc.c | 2 ++ 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'fs') diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 2f3f86726f5b..b4549e54007d 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -1932,8 +1932,6 @@ nfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry) old_dentry, dentry); trace_nfs_link_enter(inode, dir, dentry); - NFS_PROTO(inode)->return_delegation(inode); - d_drop(dentry); error = NFS_PROTO(dir)->link(inode, dir, &dentry->d_name); if (error == 0) { diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 71f2916f93ff..f4216b6b01c9 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -4318,6 +4318,8 @@ static int _nfs4_proc_link(struct inode *inode, struct inode *dir, const struct } arg.bitmask = nfs4_bitmask(server, res.label); + nfs4_inode_return_delegation(inode); + status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); if (!status) { update_changeattr(dir, &res.cinfo, res.fattr->time_start); -- cgit From 912678dbc592db7ad618f383866ad23e43cd51f3 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 20 Mar 2018 16:43:15 -0400 Subject: NFS: Move the delegation return down into nfs4_proc_remove() Move the delegation return out of generic code and down into the NFSv4 specific unlink code. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/dir.c | 5 ++--- fs/nfs/nfs3proc.c | 6 +++--- fs/nfs/nfs4proc.c | 22 ++++++++++++++++++++-- fs/nfs/proc.c | 6 +++--- 4 files changed, 28 insertions(+), 11 deletions(-) (limited to 'fs') diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index b4549e54007d..eb9d782ed674 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -1798,12 +1798,11 @@ static int nfs_safe_remove(struct dentry *dentry) trace_nfs_remove_enter(dir, dentry); if (inode != NULL) { - NFS_PROTO(inode)->return_delegation(inode); - error = NFS_PROTO(dir)->remove(dir, &dentry->d_name); + error = NFS_PROTO(dir)->remove(dir, dentry); if (error == 0) nfs_drop_nlink(inode); } else - error = NFS_PROTO(dir)->remove(dir, &dentry->d_name); + error = NFS_PROTO(dir)->remove(dir, dentry); if (error == -ENOENT) nfs_dentry_handle_enoent(dentry); trace_nfs_remove_exit(dir, dentry, error); diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index 7327930ad970..f4ead71e4350 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -383,11 +383,11 @@ out: } static int -nfs3_proc_remove(struct inode *dir, const struct qstr *name) +nfs3_proc_remove(struct inode *dir, struct dentry *dentry) { struct nfs_removeargs arg = { .fh = NFS_FH(dir), - .name = *name, + .name = dentry->d_name, }; struct nfs_removeres res; struct rpc_message msg = { @@ -397,7 +397,7 @@ nfs3_proc_remove(struct inode *dir, const struct qstr *name) }; int status = -ENOMEM; - dprintk("NFS call remove %s\n", name->name); + dprintk("NFS call remove %pd2\n", dentry); res.dir_attr = nfs_alloc_fattr(); if (res.dir_attr == NULL) goto out; diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index f4216b6b01c9..810ebd2f5174 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -4200,10 +4200,28 @@ static int _nfs4_proc_remove(struct inode *dir, const struct qstr *name) return status; } -static int nfs4_proc_remove(struct inode *dir, const struct qstr *name) +static int nfs4_proc_remove(struct inode *dir, struct dentry *dentry) { struct nfs4_exception exception = { }; + struct inode *inode = d_inode(dentry); int err; + + if (inode) + nfs4_inode_return_delegation(inode); + do { + err = _nfs4_proc_remove(dir, &dentry->d_name); + trace_nfs4_remove(dir, &dentry->d_name, err); + err = nfs4_handle_exception(NFS_SERVER(dir), err, + &exception); + } while (exception.retry); + return err; +} + +static int nfs4_proc_rmdir(struct inode *dir, const struct qstr *name) +{ + struct nfs4_exception exception = { }; + int err; + do { err = _nfs4_proc_remove(dir, name); trace_nfs4_remove(dir, name, err); @@ -9601,7 +9619,7 @@ const struct nfs_rpc_ops nfs_v4_clientops = { .link = nfs4_proc_link, .symlink = nfs4_proc_symlink, .mkdir = nfs4_proc_mkdir, - .rmdir = nfs4_proc_remove, + .rmdir = nfs4_proc_rmdir, .readdir = nfs4_proc_readdir, .mknod = nfs4_proc_mknod, .statfs = nfs4_proc_statfs, diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c index f7fd9192d4bc..b2e81a110133 100644 --- a/fs/nfs/proc.c +++ b/fs/nfs/proc.c @@ -300,11 +300,11 @@ out: } static int -nfs_proc_remove(struct inode *dir, const struct qstr *name) +nfs_proc_remove(struct inode *dir, struct dentry *dentry) { struct nfs_removeargs arg = { .fh = NFS_FH(dir), - .name = *name, + .name = dentry->d_name, }; struct rpc_message msg = { .rpc_proc = &nfs_procedures[NFSPROC_REMOVE], @@ -312,7 +312,7 @@ nfs_proc_remove(struct inode *dir, const struct qstr *name) }; int status; - dprintk("NFS call remove %s\n", name->name); + dprintk("NFS call remove %pd2\n",dentry); status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0); nfs_mark_for_revalidate(dir); -- cgit From f2c2c552f119db84d85a53a8bd76479f34df02b1 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 20 Mar 2018 16:43:16 -0400 Subject: NFS: Move delegation recall into the NFSv4 callback for rename_setup() Move the delegation recall out of the generic code, and into the NFSv4 specific callback. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/dir.c | 4 ---- fs/nfs/nfs3proc.c | 4 +++- fs/nfs/nfs4proc.c | 13 ++++++++++--- fs/nfs/proc.c | 4 +++- fs/nfs/unlink.c | 5 +---- 5 files changed, 17 insertions(+), 13 deletions(-) (limited to 'fs') diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index eb9d782ed674..8001f8c7ad0e 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -2020,10 +2020,6 @@ int nfs_rename(struct inode *old_dir, struct dentry *old_dentry, } } - NFS_PROTO(old_inode)->return_delegation(old_inode); - 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); if (IS_ERR(task)) { error = PTR_ERR(task); diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index f4ead71e4350..08875dc17b52 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -433,7 +433,9 @@ nfs3_proc_unlink_done(struct rpc_task *task, struct inode *dir) } static void -nfs3_proc_rename_setup(struct rpc_message *msg, struct inode *dir) +nfs3_proc_rename_setup(struct rpc_message *msg, + struct dentry *old_dentry, + struct dentry *new_dentry) { msg->rpc_proc = &nfs3_procedures[NFS3PROC_RENAME]; } diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 810ebd2f5174..b06a820b570d 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -4267,14 +4267,21 @@ static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) return 1; } -static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *dir) +static void nfs4_proc_rename_setup(struct rpc_message *msg, + struct dentry *old_dentry, + struct dentry *new_dentry) { - struct nfs_server *server = NFS_SERVER(dir); struct nfs_renameargs *arg = msg->rpc_argp; struct nfs_renameres *res = msg->rpc_resp; + struct inode *old_inode = d_inode(old_dentry); + struct inode *new_inode = d_inode(new_dentry); + if (old_inode) + nfs4_inode_return_delegation(old_inode); + if (new_inode) + nfs4_inode_return_delegation(new_inode); msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; - res->server = server; + res->server = NFS_SB(old_dentry->d_sb); nfs4_init_sequence(&arg->seq_args, &res->seq_res, 1); } diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c index b2e81a110133..39dc9276b1f6 100644 --- a/fs/nfs/proc.c +++ b/fs/nfs/proc.c @@ -338,7 +338,9 @@ static int nfs_proc_unlink_done(struct rpc_task *task, struct inode *dir) } static void -nfs_proc_rename_setup(struct rpc_message *msg, struct inode *dir) +nfs_proc_rename_setup(struct rpc_message *msg, + struct dentry *old_dentry, + struct dentry *new_dentry) { msg->rpc_proc = &nfs_procedures[NFSPROC_RENAME]; } diff --git a/fs/nfs/unlink.c b/fs/nfs/unlink.c index 630b4a3c1a93..44f101411422 100644 --- a/fs/nfs/unlink.c +++ b/fs/nfs/unlink.c @@ -386,7 +386,7 @@ nfs_async_rename(struct inode *old_dir, struct inode *new_dir, nfs_sb_active(old_dir->i_sb); - NFS_PROTO(data->old_dir)->rename_setup(&msg, old_dir); + NFS_PROTO(data->old_dir)->rename_setup(&msg, old_dentry, new_dentry); return rpc_run_task(&task_setup_data); } @@ -463,9 +463,6 @@ nfs_sillyrename(struct inode *dir, struct dentry *dentry) fileid = NFS_FILEID(d_inode(dentry)); - /* Return delegation in anticipation of the rename */ - NFS_PROTO(d_inode(dentry))->return_delegation(d_inode(dentry)); - sdentry = NULL; do { int slen; -- cgit From 977fcc2b0b41c1fc82e8349995695e207ccb6684 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 20 Mar 2018 16:43:17 -0400 Subject: NFS: Add a delegation return into nfs4_proc_unlink_setup() Ensure that when we do finally delete the file, then we return the delegation. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/nfs3proc.c | 2 +- fs/nfs/nfs4proc.c | 9 ++++++--- fs/nfs/proc.c | 2 +- fs/nfs/unlink.c | 2 +- 4 files changed, 9 insertions(+), 6 deletions(-) (limited to 'fs') diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index 08875dc17b52..ae03307bd8cd 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -411,7 +411,7 @@ out: } static void -nfs3_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) +nfs3_proc_unlink_setup(struct rpc_message *msg, struct dentry *dentry) { msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE]; } diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index b06a820b570d..21daeac114fe 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -4231,17 +4231,20 @@ static int nfs4_proc_rmdir(struct inode *dir, const struct qstr *name) return err; } -static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) +static void nfs4_proc_unlink_setup(struct rpc_message *msg, struct dentry *dentry) { - struct nfs_server *server = NFS_SERVER(dir); struct nfs_removeargs *args = msg->rpc_argp; struct nfs_removeres *res = msg->rpc_resp; + struct inode *inode = d_inode(dentry); - res->server = server; + res->server = NFS_SB(dentry->d_sb); msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVE]; nfs4_init_sequence(&args->seq_args, &res->seq_res, 1); nfs_fattr_init(res->dir_attr); + + if (inode) + nfs4_inode_return_delegation(inode); } static void nfs4_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data) diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c index 39dc9276b1f6..318b3f34a6d0 100644 --- a/fs/nfs/proc.c +++ b/fs/nfs/proc.c @@ -321,7 +321,7 @@ nfs_proc_remove(struct inode *dir, struct dentry *dentry) } static void -nfs_proc_unlink_setup(struct rpc_message *msg, struct inode *dir) +nfs_proc_unlink_setup(struct rpc_message *msg, struct dentry *dentry) { msg->rpc_proc = &nfs_procedures[NFSPROC_REMOVE]; } diff --git a/fs/nfs/unlink.c b/fs/nfs/unlink.c index 44f101411422..bf54fc9ae135 100644 --- a/fs/nfs/unlink.c +++ b/fs/nfs/unlink.c @@ -105,7 +105,7 @@ static void nfs_do_call_unlink(struct nfs_unlinkdata *data) data->args.fh = NFS_FH(dir); nfs_fattr_init(data->res.dir_attr); - NFS_PROTO(dir)->unlink_setup(&msg, dir); + NFS_PROTO(dir)->unlink_setup(&msg, data->dentry); task_setup_data.rpc_client = NFS_CLIENT(dir); task = rpc_run_task(&task_setup_data); -- cgit From 199366f0173f9e01efc23ecd7d88b82ad34f42fb Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 20 Mar 2018 16:43:18 -0400 Subject: NFS: Move the delegation return down into _nfs4_do_setattr() Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/inode.c | 5 ----- fs/nfs/nfs4proc.c | 4 ++++ 2 files changed, 4 insertions(+), 5 deletions(-) (limited to 'fs') diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 7d893543cf3b..9da00b2e26a1 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -613,11 +613,6 @@ nfs_setattr(struct dentry *dentry, struct iattr *attr) goto out; } - /* - * Return any delegations if we're going to change ACLs - */ - if ((attr->ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID)) != 0) - NFS_PROTO(inode)->return_delegation(inode); error = NFS_PROTO(inode)->setattr(dentry, fattr, attr); if (error == 0) error = nfs_refresh_inode(inode, fattr); diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 21daeac114fe..173089f5bf7e 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -3875,6 +3875,10 @@ nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, if (IS_ERR(label)) return PTR_ERR(label); + /* Return any delegations if we're going to change ACLs */ + if ((sattr->ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID)) != 0) + nfs4_inode_return_delegation(inode); + status = nfs4_do_setattr(inode, cred, fattr, sattr, ctx, NULL, label); if (status == 0) { nfs_setattr_update_inode(inode, sattr, fattr); -- cgit From c135cb39a907b85aef5389c191b6f02cffbadb8a Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 20 Mar 2018 16:43:19 -0400 Subject: NFS: Remove the unused return_delegation() callback Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/nfs3proc.c | 7 ------- fs/nfs/nfs4proc.c | 1 - fs/nfs/proc.c | 7 ------- 3 files changed, 15 deletions(-) (limited to 'fs') diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index ae03307bd8cd..cc04d988db7c 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -910,12 +910,6 @@ static int nfs3_have_delegation(struct inode *inode, fmode_t flags) return 0; } -static int nfs3_return_delegation(struct inode *inode) -{ - nfs_wb_all(inode); - return 0; -} - static const struct inode_operations nfs3_dir_inode_operations = { .create = nfs_create, .lookup = nfs_lookup, @@ -992,7 +986,6 @@ const struct nfs_rpc_ops nfs_v3_clientops = { .clear_acl_cache = forget_all_cached_acls, .close_context = nfs_close_context, .have_delegation = nfs3_have_delegation, - .return_delegation = nfs3_return_delegation, .alloc_client = nfs_alloc_client, .init_client = nfs_init_client, .free_client = nfs_free_client, diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 173089f5bf7e..04978bfd6beb 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -9654,7 +9654,6 @@ const struct nfs_rpc_ops nfs_v4_clientops = { .close_context = nfs4_close_context, .open_context = nfs4_atomic_open, .have_delegation = nfs4_have_delegation, - .return_delegation = nfs4_inode_return_delegation, .alloc_client = nfs4_alloc_client, .init_client = nfs4_init_client, .free_client = nfs4_free_client, diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c index 318b3f34a6d0..4e93d6308733 100644 --- a/fs/nfs/proc.c +++ b/fs/nfs/proc.c @@ -673,12 +673,6 @@ static int nfs_have_delegation(struct inode *inode, fmode_t flags) return 0; } -static int nfs_return_delegation(struct inode *inode) -{ - nfs_wb_all(inode); - return 0; -} - static const struct inode_operations nfs_dir_inode_operations = { .create = nfs_create, .lookup = nfs_lookup, @@ -743,7 +737,6 @@ const struct nfs_rpc_ops nfs_v2_clientops = { .lock_check_bounds = nfs_lock_check_bounds, .close_context = nfs_close_context, .have_delegation = nfs_have_delegation, - .return_delegation = nfs_return_delegation, .alloc_client = nfs_alloc_client, .init_client = nfs_init_client, .free_client = nfs_free_client, -- cgit From c01d36457dccf8e4c8991ab6570ff11554824710 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 20 Mar 2018 16:43:20 -0400 Subject: NFSv4: Don't return the delegation when not needed by NFSv4.x (x>0) Starting with NFSv4.1, the server is able to deduce the client id from the SEQUENCE op which means it can always figure out whether or not the client is holding a delegation on a file that is being changed. For that reason, RFC5661 does not require a delegation to be unconditionally recalled on operations such as SETATTR, RENAME, or REMOVE. Note that for now, we continue to return READ delegations since that is still expected by the Linux knfsd server. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/delegation.c | 17 +++++++++++++++++ fs/nfs/delegation.h | 1 + fs/nfs/nfs4proc.c | 16 ++++++++++------ 3 files changed, 28 insertions(+), 6 deletions(-) (limited to 'fs') diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index d8b47624fee2..a5cb44375100 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -19,6 +19,7 @@ #include #include "nfs4_fs.h" +#include "nfs4session.h" #include "delegation.h" #include "internal.h" #include "nfs4trace.h" @@ -547,6 +548,22 @@ int nfs4_inode_return_delegation(struct inode *inode) return err; } +/** + * nfs4_inode_make_writeable + * @inode: pointer to inode + * + * Make the inode writeable by returning the delegation if necessary + * + * Returns zero on success, or a negative errno value. + */ +int nfs4_inode_make_writeable(struct inode *inode) +{ + if (!nfs4_has_session(NFS_SERVER(inode)->nfs_client) || + !nfs4_check_delegation(inode, FMODE_WRITE)) + return nfs4_inode_return_delegation(inode); + return 0; +} + static void nfs_mark_return_if_closed_delegation(struct nfs_server *server, struct nfs_delegation *delegation) { diff --git a/fs/nfs/delegation.h b/fs/nfs/delegation.h index 185a09f37a89..dcc8a783a6e1 100644 --- a/fs/nfs/delegation.h +++ b/fs/nfs/delegation.h @@ -70,6 +70,7 @@ int nfs4_check_delegation(struct inode *inode, fmode_t flags); bool nfs4_delegation_flush_on_close(const struct inode *inode); void nfs_inode_find_delegation_state_and_recover(struct inode *inode, const nfs4_stateid *stateid); +int nfs4_inode_make_writeable(struct inode *inode); #endif diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 04978bfd6beb..24b5c80b8128 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -3877,7 +3877,7 @@ nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, /* Return any delegations if we're going to change ACLs */ if ((sattr->ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID)) != 0) - nfs4_inode_return_delegation(inode); + nfs4_inode_make_writeable(inode); status = nfs4_do_setattr(inode, cred, fattr, sattr, ctx, NULL, label); if (status == 0) { @@ -4210,8 +4210,12 @@ static int nfs4_proc_remove(struct inode *dir, struct dentry *dentry) struct inode *inode = d_inode(dentry); int err; - if (inode) - nfs4_inode_return_delegation(inode); + if (inode) { + if (inode->i_nlink == 1) + nfs4_inode_return_delegation(inode); + else + nfs4_inode_make_writeable(inode); + } do { err = _nfs4_proc_remove(dir, &dentry->d_name); trace_nfs4_remove(dir, &dentry->d_name, err); @@ -4284,7 +4288,7 @@ static void nfs4_proc_rename_setup(struct rpc_message *msg, struct inode *new_inode = d_inode(new_dentry); if (old_inode) - nfs4_inode_return_delegation(old_inode); + nfs4_inode_make_writeable(old_inode); if (new_inode) nfs4_inode_return_delegation(new_inode); msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME]; @@ -4350,7 +4354,7 @@ static int _nfs4_proc_link(struct inode *inode, struct inode *dir, const struct } arg.bitmask = nfs4_bitmask(server, res.label); - nfs4_inode_return_delegation(inode); + nfs4_inode_make_writeable(inode); status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); if (!status) { @@ -5345,7 +5349,7 @@ static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t bufl i = buf_to_pages_noslab(buf, buflen, arg.acl_pages); if (i < 0) return i; - nfs4_inode_return_delegation(inode); + nfs4_inode_make_writeable(inode); ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1); /* -- cgit From 8619ddd07b8608bb0e1c0b83406e006cbc5009cf Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 20 Mar 2018 16:53:28 -0400 Subject: NFS: Don't force a revalidation of all attributes if change is missing Even if the change attribute is missing, it is still OK to mark the other attributes as being up to date. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/inode.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'fs') diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 9da00b2e26a1..5a721c3f4eb0 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -1813,7 +1813,10 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) inode_set_iversion_raw(inode, fattr->change_attr); } } else { - nfsi->cache_validity |= save_cache_validity; + nfsi->cache_validity |= save_cache_validity & + (NFS_INO_INVALID_ATTR + | NFS_INO_REVAL_PAGECACHE + | NFS_INO_REVAL_FORCED); cache_revalidated = false; } -- cgit From 783b194c6ee14aba491ea7e97fb5109dcbd77720 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 20 Mar 2018 16:53:29 -0400 Subject: NFS: Don't redirty the attribute cache in nfs_wcc_update_inode() If we received weak cache consistency data from the server, then those attributes are up to date, and there is no reason to mark them as dirty in the attribute cache. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/inode.c | 12 ++---------- 1 file changed, 2 insertions(+), 10 deletions(-) (limited to 'fs') diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 5a721c3f4eb0..d8e8bf9da211 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -1303,24 +1303,20 @@ static bool nfs_file_has_buffered_writers(struct nfs_inode *nfsi) return nfs_file_has_writers(nfsi) && nfs_file_io_is_buffered(nfsi); } -static unsigned long nfs_wcc_update_inode(struct inode *inode, struct nfs_fattr *fattr) +static void nfs_wcc_update_inode(struct inode *inode, struct nfs_fattr *fattr) { - unsigned long ret = 0; - if ((fattr->valid & NFS_ATTR_FATTR_PRECHANGE) && (fattr->valid & NFS_ATTR_FATTR_CHANGE) && inode_eq_iversion_raw(inode, fattr->pre_change_attr)) { inode_set_iversion_raw(inode, fattr->change_attr); if (S_ISDIR(inode->i_mode)) nfs_set_cache_invalid(inode, NFS_INO_INVALID_DATA); - ret |= NFS_INO_INVALID_ATTR; } /* If we have atomic WCC data, we may update some attributes */ if ((fattr->valid & NFS_ATTR_FATTR_PRECTIME) && (fattr->valid & NFS_ATTR_FATTR_CTIME) && timespec_equal(&inode->i_ctime, &fattr->pre_ctime)) { memcpy(&inode->i_ctime, &fattr->ctime, sizeof(inode->i_ctime)); - ret |= NFS_INO_INVALID_ATTR; } if ((fattr->valid & NFS_ATTR_FATTR_PREMTIME) @@ -1329,17 +1325,13 @@ static unsigned long nfs_wcc_update_inode(struct inode *inode, struct nfs_fattr memcpy(&inode->i_mtime, &fattr->mtime, sizeof(inode->i_mtime)); if (S_ISDIR(inode->i_mode)) nfs_set_cache_invalid(inode, NFS_INO_INVALID_DATA); - ret |= NFS_INO_INVALID_ATTR; } if ((fattr->valid & NFS_ATTR_FATTR_PRESIZE) && (fattr->valid & NFS_ATTR_FATTR_SIZE) && i_size_read(inode) == nfs_size_to_loff_t(fattr->pre_size) && !nfs_have_writebacks(inode)) { i_size_write(inode, nfs_size_to_loff_t(fattr->size)); - ret |= NFS_INO_INVALID_ATTR; } - - return ret; } /** @@ -1789,7 +1781,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) | NFS_INO_REVAL_PAGECACHE); /* Do atomic weak cache consistency updates */ - invalid |= nfs_wcc_update_inode(inode, fattr); + nfs_wcc_update_inode(inode, fattr); if (pnfs_layoutcommit_outstanding(inode)) { nfsi->cache_validity |= save_cache_validity & NFS_INO_INVALID_ATTR; -- cgit From cac88f942d5890706a8965e40a068d295ac95ae2 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 20 Mar 2018 16:53:30 -0400 Subject: NFS: Don't force unnecessary cache invalidation in nfs_update_inode() If we managed to revalidate all the attributes, then there is no reason to mark them as invalid again. We do, however want to ensure that we set nfsi->attrtimeo correctly. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/inode.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'fs') diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index d8e8bf9da211..6e5a96e2e9a0 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -1799,6 +1799,8 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) | NFS_INO_INVALID_DATA | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL; + /* Force revalidate of all attributes */ + save_cache_validity |= NFS_INO_INVALID_ATTR; if (S_ISDIR(inode->i_mode)) nfs_force_lookup_revalidate(inode); } @@ -1937,6 +1939,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) /* Update attrtimeo value if we're out of the unstable period */ if (invalid & NFS_INO_INVALID_ATTR) { + invalid &= ~NFS_INO_INVALID_ATTR; nfs_inc_stats(inode, NFSIOS_ATTRINVALIDATE); nfsi->attrtimeo = NFS_MINATTRTIMEO(inode); nfsi->attrtimeo_timestamp = now; @@ -1957,10 +1960,6 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) nfsi->attr_gencount = fattr->gencount; } - /* Don't declare attrcache up to date if there were no attrs! */ - if (cache_revalidated) - invalid &= ~NFS_INO_INVALID_ATTR; - /* Don't invalidate the data if we were to blame */ if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode))) -- cgit From 16e143751727471f9a565515344196693bbc8762 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 20 Mar 2018 16:53:31 -0400 Subject: NFS: More fine grained attribute tracking Currently, if the NFS_INO_INVALID_ATTR flag is set, for instance by a call to nfs_post_op_update_inode_locked(), then it will not be cleared until all the attributes have been revalidated. This means, for instance, that NFSv4 writes will always force a full attribute revalidation. Track the ctime, mtime, size and change attribute separately from the other attributes so that we can have nfs_post_op_update_inode_locked() set them correctly, and later have the cache consistency bitmask be able to clear them. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/dir.c | 4 +- fs/nfs/inode.c | 109 ++++++++++++++++++++++++++++++++---------------------- fs/nfs/nfs4proc.c | 7 +++- fs/nfs/write.c | 7 +++- 4 files changed, 78 insertions(+), 49 deletions(-) (limited to 'fs') diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 8001f8c7ad0e..73f8b43d988c 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -1272,7 +1272,9 @@ static void nfs_drop_nlink(struct inode *inode) /* drop the inode if we're reasonably sure this is the last link */ if (inode->i_nlink == 1) clear_nlink(inode); - NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; + NFS_I(inode)->cache_validity |= NFS_INO_INVALID_CHANGE + | NFS_INO_INVALID_CTIME + | NFS_INO_INVALID_OTHER; spin_unlock(&inode->i_lock); } diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 6e5a96e2e9a0..23880f45c1e4 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -452,7 +452,7 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr, st inode->i_mode = fattr->mode; if ((fattr->valid & NFS_ATTR_FATTR_MODE) == 0 && nfs_server_capable(inode, NFS_CAP_MODE)) - nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR); + nfs_set_cache_invalid(inode, NFS_INO_INVALID_OTHER); /* Why so? Because we want revalidate for devices/FIFOs, and * that's precisely what we have in nfs_file_inode_operations. */ @@ -498,37 +498,35 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr, st if (fattr->valid & NFS_ATTR_FATTR_ATIME) inode->i_atime = fattr->atime; else if (nfs_server_capable(inode, NFS_CAP_ATIME)) - nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR); + nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATIME); if (fattr->valid & NFS_ATTR_FATTR_MTIME) inode->i_mtime = fattr->mtime; else if (nfs_server_capable(inode, NFS_CAP_MTIME)) - nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR); + nfs_set_cache_invalid(inode, NFS_INO_INVALID_MTIME); if (fattr->valid & NFS_ATTR_FATTR_CTIME) inode->i_ctime = fattr->ctime; else if (nfs_server_capable(inode, NFS_CAP_CTIME)) - nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR); + nfs_set_cache_invalid(inode, NFS_INO_INVALID_CTIME); if (fattr->valid & NFS_ATTR_FATTR_CHANGE) inode_set_iversion_raw(inode, fattr->change_attr); else - nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR - | NFS_INO_REVAL_PAGECACHE); + nfs_set_cache_invalid(inode, NFS_INO_INVALID_CHANGE); if (fattr->valid & NFS_ATTR_FATTR_SIZE) inode->i_size = nfs_size_to_loff_t(fattr->size); else - nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR - | NFS_INO_REVAL_PAGECACHE); + nfs_set_cache_invalid(inode, NFS_INO_INVALID_SIZE); if (fattr->valid & NFS_ATTR_FATTR_NLINK) set_nlink(inode, fattr->nlink); else if (nfs_server_capable(inode, NFS_CAP_NLINK)) - nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR); + nfs_set_cache_invalid(inode, NFS_INO_INVALID_OTHER); if (fattr->valid & NFS_ATTR_FATTR_OWNER) inode->i_uid = fattr->uid; else if (nfs_server_capable(inode, NFS_CAP_OWNER)) - nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR); + nfs_set_cache_invalid(inode, NFS_INO_INVALID_OTHER); if (fattr->valid & NFS_ATTR_FATTR_GROUP) inode->i_gid = fattr->gid; else if (nfs_server_capable(inode, NFS_CAP_OWNER_GROUP)) - nfs_set_cache_invalid(inode, NFS_INO_INVALID_ATTR); + nfs_set_cache_invalid(inode, NFS_INO_INVALID_OTHER); if (fattr->valid & NFS_ATTR_FATTR_BLOCKS_USED) inode->i_blocks = fattr->du.nfs2.blocks; if (fattr->valid & NFS_ATTR_FATTR_SPACE_USED) { @@ -657,6 +655,7 @@ out: * nfs_setattr_update_inode - Update inode metadata after a setattr call. * @inode: pointer to struct inode * @attr: pointer to struct iattr + * @fattr: pointer to struct nfs_fattr * * Note: we do this in the *proc.c in order to ensure that * it works for things like exclusive creates too. @@ -669,6 +668,8 @@ void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr, spin_lock(&inode->i_lock); NFS_I(inode)->attr_gencount = fattr->gencount; + nfs_set_cache_invalid(inode, NFS_INO_INVALID_CHANGE + | NFS_INO_INVALID_CTIME); if ((attr->ia_valid & (ATTR_MODE|ATTR_UID|ATTR_GID)) != 0) { if ((attr->ia_valid & ATTR_MODE) != 0) { int mode = attr->ia_mode & S_IALLUGO; @@ -683,13 +684,12 @@ void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr, | NFS_INO_INVALID_ACL); } if ((attr->ia_valid & ATTR_SIZE) != 0) { + nfs_set_cache_invalid(inode, NFS_INO_INVALID_MTIME); nfs_inc_stats(inode, NFSIOS_SETATTRTRUNC); nfs_vmtruncate(inode, attr->ia_size); } if (fattr->valid) nfs_update_inode(inode, fattr); - else - NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; spin_unlock(&inode->i_lock); } EXPORT_SYMBOL_GPL(nfs_setattr_update_inode); @@ -1361,33 +1361,41 @@ static int nfs_check_inode_attributes(struct inode *inode, struct nfs_fattr *fat if (!nfs_file_has_buffered_writers(nfsi)) { /* Verify a few of the more important attributes */ if ((fattr->valid & NFS_ATTR_FATTR_CHANGE) != 0 && !inode_eq_iversion_raw(inode, fattr->change_attr)) - invalid |= NFS_INO_INVALID_ATTR | NFS_INO_REVAL_PAGECACHE; + invalid |= NFS_INO_INVALID_CHANGE + | NFS_INO_REVAL_PAGECACHE; if ((fattr->valid & NFS_ATTR_FATTR_MTIME) && !timespec_equal(&inode->i_mtime, &fattr->mtime)) - invalid |= NFS_INO_INVALID_ATTR; + invalid |= NFS_INO_INVALID_MTIME; if ((fattr->valid & NFS_ATTR_FATTR_CTIME) && !timespec_equal(&inode->i_ctime, &fattr->ctime)) - invalid |= NFS_INO_INVALID_ATTR; + invalid |= NFS_INO_INVALID_CTIME; if (fattr->valid & NFS_ATTR_FATTR_SIZE) { cur_size = i_size_read(inode); new_isize = nfs_size_to_loff_t(fattr->size); if (cur_size != new_isize) - invalid |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE; + invalid |= NFS_INO_INVALID_SIZE + | NFS_INO_REVAL_PAGECACHE; } } /* Have any file permissions changed? */ if ((fattr->valid & NFS_ATTR_FATTR_MODE) && (inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO)) - invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL; + invalid |= NFS_INO_INVALID_ACCESS + | NFS_INO_INVALID_ACL + | NFS_INO_INVALID_OTHER; if ((fattr->valid & NFS_ATTR_FATTR_OWNER) && !uid_eq(inode->i_uid, fattr->uid)) - invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL; + invalid |= NFS_INO_INVALID_ACCESS + | NFS_INO_INVALID_ACL + | NFS_INO_INVALID_OTHER; if ((fattr->valid & NFS_ATTR_FATTR_GROUP) && !gid_eq(inode->i_gid, fattr->gid)) - invalid |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL; + invalid |= NFS_INO_INVALID_ACCESS + | NFS_INO_INVALID_ACL + | NFS_INO_INVALID_OTHER; /* Has the link count changed? */ if ((fattr->valid & NFS_ATTR_FATTR_NLINK) && inode->i_nlink != fattr->nlink) - invalid |= NFS_INO_INVALID_ATTR; + invalid |= NFS_INO_INVALID_OTHER; if ((fattr->valid & NFS_ATTR_FATTR_ATIME) && !timespec_equal(&inode->i_atime, &fattr->atime)) invalid |= NFS_INO_INVALID_ATIME; @@ -1589,10 +1597,9 @@ int nfs_refresh_inode(struct inode *inode, struct nfs_fattr *fattr) } EXPORT_SYMBOL_GPL(nfs_refresh_inode); -static int nfs_post_op_update_inode_locked(struct inode *inode, struct nfs_fattr *fattr) +static int nfs_post_op_update_inode_locked(struct inode *inode, + struct nfs_fattr *fattr, unsigned int invalid) { - unsigned long invalid = NFS_INO_INVALID_ATTR; - if (S_ISDIR(inode->i_mode)) invalid |= NFS_INO_INVALID_DATA; nfs_set_cache_invalid(inode, invalid); @@ -1621,7 +1628,9 @@ int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr) spin_lock(&inode->i_lock); nfs_fattr_set_barrier(fattr); - status = nfs_post_op_update_inode_locked(inode, fattr); + status = nfs_post_op_update_inode_locked(inode, fattr, + NFS_INO_INVALID_CHANGE + | NFS_INO_INVALID_CTIME); spin_unlock(&inode->i_lock); return status; @@ -1673,7 +1682,10 @@ int nfs_post_op_update_inode_force_wcc_locked(struct inode *inode, struct nfs_fa fattr->valid |= NFS_ATTR_FATTR_PRESIZE; } out_noforce: - status = nfs_post_op_update_inode_locked(inode, fattr); + status = nfs_post_op_update_inode_locked(inode, fattr, + NFS_INO_INVALID_CHANGE + | NFS_INO_INVALID_CTIME + | NFS_INO_INVALID_MTIME); return status; } @@ -1795,12 +1807,15 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) inode->i_sb->s_id, inode->i_ino); /* Could it be a race with writeback? */ if (!have_writers) { - invalid |= NFS_INO_INVALID_ATTR + invalid |= NFS_INO_INVALID_CHANGE | NFS_INO_INVALID_DATA | NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL; /* Force revalidate of all attributes */ - save_cache_validity |= NFS_INO_INVALID_ATTR; + save_cache_validity |= NFS_INO_INVALID_CTIME + | NFS_INO_INVALID_MTIME + | NFS_INO_INVALID_SIZE + | NFS_INO_INVALID_OTHER; if (S_ISDIR(inode->i_mode)) nfs_force_lookup_revalidate(inode); } @@ -1808,7 +1823,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) } } else { nfsi->cache_validity |= save_cache_validity & - (NFS_INO_INVALID_ATTR + (NFS_INO_INVALID_CHANGE | NFS_INO_REVAL_PAGECACHE | NFS_INO_REVAL_FORCED); cache_revalidated = false; @@ -1818,7 +1833,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) memcpy(&inode->i_mtime, &fattr->mtime, sizeof(inode->i_mtime)); } else if (server->caps & NFS_CAP_MTIME) { nfsi->cache_validity |= save_cache_validity & - (NFS_INO_INVALID_ATTR + (NFS_INO_INVALID_MTIME | NFS_INO_REVAL_FORCED); cache_revalidated = false; } @@ -1827,7 +1842,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) memcpy(&inode->i_ctime, &fattr->ctime, sizeof(inode->i_ctime)); } else if (server->caps & NFS_CAP_CTIME) { nfsi->cache_validity |= save_cache_validity & - (NFS_INO_INVALID_ATTR + (NFS_INO_INVALID_CTIME | NFS_INO_REVAL_FORCED); cache_revalidated = false; } @@ -1842,7 +1857,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) if (!nfs_have_writebacks(inode) || new_isize > cur_isize) { i_size_write(inode, new_isize); if (!have_writers) - invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; + invalid |= NFS_INO_INVALID_DATA; } dprintk("NFS: isize change on server for file %s/%ld " "(%Ld to %Ld)\n", @@ -1853,7 +1868,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) } } else { nfsi->cache_validity |= save_cache_validity & - (NFS_INO_INVALID_ATTR + (NFS_INO_INVALID_SIZE | NFS_INO_REVAL_PAGECACHE | NFS_INO_REVAL_FORCED); cache_revalidated = false; @@ -1874,55 +1889,61 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) umode_t newmode = inode->i_mode & S_IFMT; newmode |= fattr->mode & S_IALLUGO; inode->i_mode = newmode; - invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL; + invalid |= NFS_INO_INVALID_ACCESS + | NFS_INO_INVALID_ACL + | NFS_INO_INVALID_OTHER; } } else if (server->caps & NFS_CAP_MODE) { nfsi->cache_validity |= save_cache_validity & - (NFS_INO_INVALID_ATTR - | NFS_INO_INVALID_ACCESS + (NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL + | NFS_INO_INVALID_OTHER | NFS_INO_REVAL_FORCED); cache_revalidated = false; } if (fattr->valid & NFS_ATTR_FATTR_OWNER) { if (!uid_eq(inode->i_uid, fattr->uid)) { - invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL; + invalid |= NFS_INO_INVALID_ACCESS + | NFS_INO_INVALID_ACL + | NFS_INO_INVALID_OTHER; inode->i_uid = fattr->uid; } } else if (server->caps & NFS_CAP_OWNER) { nfsi->cache_validity |= save_cache_validity & - (NFS_INO_INVALID_ATTR - | NFS_INO_INVALID_ACCESS + (NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL + | NFS_INO_INVALID_OTHER | NFS_INO_REVAL_FORCED); cache_revalidated = false; } if (fattr->valid & NFS_ATTR_FATTR_GROUP) { if (!gid_eq(inode->i_gid, fattr->gid)) { - invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL; + invalid |= NFS_INO_INVALID_ACCESS + | NFS_INO_INVALID_ACL + | NFS_INO_INVALID_OTHER; inode->i_gid = fattr->gid; } } else if (server->caps & NFS_CAP_OWNER_GROUP) { nfsi->cache_validity |= save_cache_validity & - (NFS_INO_INVALID_ATTR - | NFS_INO_INVALID_ACCESS + (NFS_INO_INVALID_ACCESS | NFS_INO_INVALID_ACL + | NFS_INO_INVALID_OTHER | NFS_INO_REVAL_FORCED); cache_revalidated = false; } if (fattr->valid & NFS_ATTR_FATTR_NLINK) { if (inode->i_nlink != fattr->nlink) { - invalid |= NFS_INO_INVALID_ATTR; + invalid |= NFS_INO_INVALID_OTHER; if (S_ISDIR(inode->i_mode)) invalid |= NFS_INO_INVALID_DATA; set_nlink(inode, fattr->nlink); } } else if (server->caps & NFS_CAP_NLINK) { nfsi->cache_validity |= save_cache_validity & - (NFS_INO_INVALID_ATTR + (NFS_INO_INVALID_OTHER | NFS_INO_REVAL_FORCED); cache_revalidated = false; } diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 24b5c80b8128..e5ad2c186927 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -1045,7 +1045,9 @@ static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo, struct nfs_inode *nfsi = NFS_I(dir); spin_lock(&dir->i_lock); - nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA; + nfsi->cache_validity |= NFS_INO_INVALID_CTIME + | NFS_INO_INVALID_MTIME + | NFS_INO_INVALID_DATA; if (cinfo->atomic && cinfo->before == inode_peek_iversion_raw(dir)) { nfsi->cache_validity &= ~NFS_INO_REVAL_PAGECACHE; nfsi->attrtimeo_timestamp = jiffies; @@ -5364,7 +5366,8 @@ static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t bufl * so mark the attribute cache invalid. */ spin_lock(&inode->i_lock); - NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR; + NFS_I(inode)->cache_validity |= NFS_INO_INVALID_CHANGE + | NFS_INO_INVALID_CTIME; spin_unlock(&inode->i_lock); nfs_access_zap_cache(inode); nfs_zap_acl_cache(inode); diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 7428a669d7a7..3efce54ef1cd 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -1562,8 +1562,11 @@ static int nfs_writeback_done(struct rpc_task *task, } /* Deal with the suid/sgid bit corner case */ - if (nfs_should_remove_suid(inode)) - nfs_mark_for_revalidate(inode); + if (nfs_should_remove_suid(inode)) { + spin_lock(&inode->i_lock); + NFS_I(inode)->cache_validity |= NFS_INO_INVALID_OTHER; + spin_unlock(&inode->i_lock); + } return 0; } -- cgit From d943f2dd8dba1ecde2de053500a6533e39577bfc Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 20 Mar 2018 16:53:32 -0400 Subject: NFSv4: Ignore change attribute invalidations if we hold a delegation Don't bother even recording an invalid change attribute if we hold a delegation since we already know the state of our attribute cache. We can rely on the fact that we will pick up a copy from the server when we return the delegation. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/inode.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'fs') diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 23880f45c1e4..a2c5d4ad4535 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -200,7 +200,10 @@ bool nfs_check_cache_invalid(struct inode *inode, unsigned long flags) static void nfs_set_cache_invalid(struct inode *inode, unsigned long flags) { struct nfs_inode *nfsi = NFS_I(inode); + bool have_delegation = nfs_have_delegated_attributes(inode); + if (have_delegation) + flags &= ~(NFS_INO_INVALID_CHANGE|NFS_INO_REVAL_PAGECACHE); if (inode->i_mapping->nrpages == 0) flags &= ~NFS_INO_INVALID_DATA; nfsi->cache_validity |= flags; -- cgit From e8d8aa46be413930fb3e084f9a7e815f87f72f1f Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 20 Mar 2018 17:03:07 -0400 Subject: NFSv4: Allow GFP_NOIO sleeps in decode_attr_owner/decode_attr_group Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/nfs4xdr.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'fs') diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 65c9c4175145..6b08f6b1addf 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -3981,7 +3981,7 @@ static int decode_attr_owner(struct xdr_stream *xdr, uint32_t *bitmap, bitmap[1] &= ~FATTR4_WORD1_OWNER; if (owner_name != NULL) { - len = decode_nfs4_string(xdr, owner_name, GFP_NOWAIT); + len = decode_nfs4_string(xdr, owner_name, GFP_NOIO); if (len <= 0) goto out; dprintk("%s: name=%s\n", __func__, owner_name->data); @@ -4016,7 +4016,7 @@ static int decode_attr_group(struct xdr_stream *xdr, uint32_t *bitmap, bitmap[1] &= ~FATTR4_WORD1_OWNER_GROUP; if (group_name != NULL) { - len = decode_nfs4_string(xdr, group_name, GFP_NOWAIT); + len = decode_nfs4_string(xdr, group_name, GFP_NOIO); if (len <= 0) goto out; dprintk("%s: name=%s\n", __func__, group_name->data); -- cgit From 37c88763def8474bc0972fbd1adb0d21670104b7 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 20 Mar 2018 17:03:08 -0400 Subject: NFSv4; Clean up XDR encoding of type bitmap4 Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/nfs4xdr.c | 166 ++++++++++++++++++++++++------------------------------- 1 file changed, 72 insertions(+), 94 deletions(-) (limited to 'fs') diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 6b08f6b1addf..80c5b519fd6a 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -958,6 +958,35 @@ static void encode_uint64(struct xdr_stream *xdr, u64 n) WARN_ON_ONCE(xdr_stream_encode_u64(xdr, n) < 0); } +static ssize_t xdr_encode_bitmap4(struct xdr_stream *xdr, + const __u32 *bitmap, size_t len) +{ + ssize_t ret; + + /* Trim empty words */ + while (len > 0 && bitmap[len-1] == 0) + len--; + ret = xdr_stream_encode_uint32_array(xdr, bitmap, len); + if (WARN_ON_ONCE(ret < 0)) + return ret; + return len; +} + +static size_t mask_bitmap4(const __u32 *bitmap, const __u32 *mask, + __u32 *res, size_t len) +{ + size_t i; + __u32 tmp; + + while (len > 0 && (bitmap[len-1] == 0 || mask[len-1] == 0)) + len--; + for (i = len; i-- > 0;) { + tmp = bitmap[i] & mask[i]; + res[i] = tmp; + } + return len; +} + static void encode_nfs4_seqid(struct xdr_stream *xdr, const struct nfs_seqid *seqid) { @@ -1200,85 +1229,45 @@ static void encode_create(struct xdr_stream *xdr, const struct nfs4_create_arg * create->server, create->server->attr_bitmask); } -static void encode_getattr_one(struct xdr_stream *xdr, uint32_t bitmap, struct compound_hdr *hdr) -{ - __be32 *p; - - encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr); - p = reserve_space(xdr, 8); - *p++ = cpu_to_be32(1); - *p = cpu_to_be32(bitmap); -} - -static void encode_getattr_two(struct xdr_stream *xdr, uint32_t bm0, uint32_t bm1, struct compound_hdr *hdr) -{ - __be32 *p; - - encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr); - p = reserve_space(xdr, 12); - *p++ = cpu_to_be32(2); - *p++ = cpu_to_be32(bm0); - *p = cpu_to_be32(bm1); -} - -static void -encode_getattr_three(struct xdr_stream *xdr, - uint32_t bm0, uint32_t bm1, uint32_t bm2, - struct compound_hdr *hdr) +static void encode_getattr(struct xdr_stream *xdr, + const __u32 *bitmap, const __u32 *mask, size_t len, + struct compound_hdr *hdr) { - __be32 *p; + __u32 masked_bitmap[nfs4_fattr_bitmap_maxsz]; encode_op_hdr(xdr, OP_GETATTR, decode_getattr_maxsz, hdr); - if (bm2) { - p = reserve_space(xdr, 16); - *p++ = cpu_to_be32(3); - *p++ = cpu_to_be32(bm0); - *p++ = cpu_to_be32(bm1); - *p = cpu_to_be32(bm2); - } else if (bm1) { - p = reserve_space(xdr, 12); - *p++ = cpu_to_be32(2); - *p++ = cpu_to_be32(bm0); - *p = cpu_to_be32(bm1); - } else { - p = reserve_space(xdr, 8); - *p++ = cpu_to_be32(1); - *p = cpu_to_be32(bm0); + if (mask) { + if (WARN_ON_ONCE(len > ARRAY_SIZE(masked_bitmap))) + len = ARRAY_SIZE(masked_bitmap); + len = mask_bitmap4(bitmap, mask, masked_bitmap, len); + bitmap = masked_bitmap; } + xdr_encode_bitmap4(xdr, bitmap, len); } static void encode_getfattr(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) { - encode_getattr_three(xdr, bitmask[0] & nfs4_fattr_bitmap[0], - bitmask[1] & nfs4_fattr_bitmap[1], - bitmask[2] & nfs4_fattr_bitmap[2], - hdr); + encode_getattr(xdr, nfs4_fattr_bitmap, bitmask, + ARRAY_SIZE(nfs4_fattr_bitmap), hdr); } static void encode_getfattr_open(struct xdr_stream *xdr, const u32 *bitmask, const u32 *open_bitmap, struct compound_hdr *hdr) { - encode_getattr_three(xdr, - bitmask[0] & open_bitmap[0], - bitmask[1] & open_bitmap[1], - bitmask[2] & open_bitmap[2], - hdr); + encode_getattr(xdr, open_bitmap, bitmask, 3, hdr); } static void encode_fsinfo(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) { - encode_getattr_three(xdr, - bitmask[0] & nfs4_fsinfo_bitmap[0], - bitmask[1] & nfs4_fsinfo_bitmap[1], - bitmask[2] & nfs4_fsinfo_bitmap[2], - hdr); + encode_getattr(xdr, nfs4_fsinfo_bitmap, bitmask, + ARRAY_SIZE(nfs4_fsinfo_bitmap), hdr); } static void encode_fs_locations(struct xdr_stream *xdr, const u32* bitmask, struct compound_hdr *hdr) { - encode_getattr_two(xdr, bitmask[0] & nfs4_fs_locations_bitmap[0], - bitmask[1] & nfs4_fs_locations_bitmap[1], hdr); + encode_getattr(xdr, nfs4_fs_locations_bitmap, bitmask, + ARRAY_SIZE(nfs4_fs_locations_bitmap), hdr); } static void encode_getfh(struct xdr_stream *xdr, struct compound_hdr *hdr) @@ -2559,13 +2548,17 @@ static void nfs4_xdr_enc_getacl(struct rpc_rqst *req, struct xdr_stream *xdr, struct compound_hdr hdr = { .minorversion = nfs4_xdr_minorversion(&args->seq_args), }; + const __u32 nfs4_acl_bitmap[1] = { + [0] = FATTR4_WORD0_ACL, + }; uint32_t replen; 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; - encode_getattr_two(xdr, FATTR4_WORD0_ACL, 0, &hdr); + encode_getattr(xdr, nfs4_acl_bitmap, NULL, + ARRAY_SIZE(nfs4_acl_bitmap), &hdr); xdr_inline_pages(&req->rq_rcv_buf, replen << 2, args->acl_pages, 0, args->acl_len); @@ -2644,8 +2637,8 @@ static void nfs4_xdr_enc_pathconf(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); - encode_getattr_one(xdr, args->bitmask[0] & nfs4_pathconf_bitmap[0], - &hdr); + encode_getattr(xdr, nfs4_pathconf_bitmap, args->bitmask, + ARRAY_SIZE(nfs4_pathconf_bitmap), &hdr); encode_nops(&hdr); } @@ -2663,8 +2656,8 @@ static void nfs4_xdr_enc_statfs(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); - encode_getattr_two(xdr, args->bitmask[0] & nfs4_statfs_bitmap[0], - args->bitmask[1] & nfs4_statfs_bitmap[1], &hdr); + encode_getattr(xdr, nfs4_statfs_bitmap, args->bitmask, + ARRAY_SIZE(nfs4_statfs_bitmap), &hdr); encode_nops(&hdr); } @@ -2684,7 +2677,7 @@ static void nfs4_xdr_enc_server_caps(struct rpc_rqst *req, encode_compound_hdr(xdr, req, &hdr); encode_sequence(xdr, &args->seq_args, &hdr); encode_putfh(xdr, args->fhandle, &hdr); - encode_getattr_three(xdr, bitmask[0], bitmask[1], bitmask[2], &hdr); + encode_getattr(xdr, bitmask, NULL, 3, &hdr); encode_nops(&hdr); } @@ -3218,34 +3211,27 @@ static int decode_ace(struct xdr_stream *xdr, void *ace) return -EIO; } -static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) +static ssize_t +decode_bitmap4(struct xdr_stream *xdr, uint32_t *bitmap, size_t sz) { - uint32_t bmlen; - __be32 *p; - - p = xdr_inline_decode(xdr, 4); - if (unlikely(!p)) - goto out_overflow; - bmlen = be32_to_cpup(p); + ssize_t ret; - bitmap[0] = bitmap[1] = bitmap[2] = 0; - p = xdr_inline_decode(xdr, (bmlen << 2)); - if (unlikely(!p)) - goto out_overflow; - if (bmlen > 0) { - bitmap[0] = be32_to_cpup(p++); - if (bmlen > 1) { - bitmap[1] = be32_to_cpup(p++); - if (bmlen > 2) - bitmap[2] = be32_to_cpup(p); - } - } - return 0; -out_overflow: + ret = xdr_stream_decode_uint32_array(xdr, bitmap, sz); + if (likely(ret >= 0)) + return ret; + if (ret == -EMSGSIZE) + return sz; print_overflow_msg(__func__, xdr); return -EIO; } +static int decode_attr_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) +{ + ssize_t ret; + ret = decode_bitmap4(xdr, bitmap, 3); + return ret < 0 ? ret : 0; +} + static int decode_attr_length(struct xdr_stream *xdr, uint32_t *attrlen, unsigned int *savep) { __be32 *p; @@ -5471,21 +5457,13 @@ decode_savefh(struct xdr_stream *xdr) static int decode_setattr(struct xdr_stream *xdr) { - __be32 *p; - uint32_t bmlen; int status; status = decode_op_hdr(xdr, OP_SETATTR); if (status) return status; - p = xdr_inline_decode(xdr, 4); - if (unlikely(!p)) - goto out_overflow; - bmlen = be32_to_cpup(p); - p = xdr_inline_decode(xdr, bmlen << 2); - if (likely(p)) + if (decode_bitmap4(xdr, NULL, 0) >= 0) return 0; -out_overflow: print_overflow_msg(__func__, xdr); return -EIO; } -- cgit From 40a3426c75e1621ee6d88be2352f5dd85f557aed Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 20 Mar 2018 17:03:09 -0400 Subject: NFSv4: Clean up encode_attrs Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/nfs4xdr.c | 17 ++--------------- 1 file changed, 2 insertions(+), 15 deletions(-) (limited to 'fs') diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 80c5b519fd6a..3d088230c975 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -1052,9 +1052,7 @@ static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, int owner_namelen = 0; int owner_grouplen = 0; __be32 *p; - unsigned i; uint32_t len = 0; - uint32_t bmval_len; uint32_t bmval[3] = { 0 }; /* @@ -1123,19 +1121,8 @@ static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, bmval[2] |= FATTR4_WORD2_SECURITY_LABEL; } - if (bmval[2] != 0) - bmval_len = 3; - else if (bmval[1] != 0) - bmval_len = 2; - else - bmval_len = 1; - - p = reserve_space(xdr, 4 + (bmval_len << 2) + 4 + len); - - *p++ = cpu_to_be32(bmval_len); - for (i = 0; i < bmval_len; i++) - *p++ = cpu_to_be32(bmval[i]); - *p++ = cpu_to_be32(len); + xdr_encode_bitmap4(xdr, bmval, ARRAY_SIZE(bmval)); + xdr_stream_encode_opaque_inline(xdr, (void **)&p, len); if (bmval[0] & FATTR4_WORD0_SIZE) p = xdr_encode_hyper(p, iap->ia_size); -- cgit From 36b3743fef88616f92b49949fe1022f345970258 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 20 Mar 2018 17:03:10 -0400 Subject: NFSv4: Add a helper to encode/decode struct timespec Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/nfs4xdr.c | 45 ++++++++++++++++++++++++++++++--------------- 1 file changed, 30 insertions(+), 15 deletions(-) (limited to 'fs') diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 3d088230c975..79f1774b9d68 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -99,6 +99,7 @@ static int nfs4_stat_to_errno(int); ((3+NFS4_FHSIZE) >> 2)) #define nfs4_fattr_bitmap_maxsz 4 #define encode_getattr_maxsz (op_encode_hdr_maxsz + nfs4_fattr_bitmap_maxsz) +#define nfstime4_maxsz (3) #define nfs4_name_maxsz (1 + ((3 + NFS4_MAXNAMLEN) >> 2)) #define nfs4_path_maxsz (1 + ((3 + NFS4_MAXPATHLEN) >> 2)) #define nfs4_owner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) @@ -113,7 +114,8 @@ static int nfs4_stat_to_errno(int); #define decode_mdsthreshold_maxsz (1 + 1 + nfs4_fattr_bitmap_maxsz + 1 + 8) /* This is based on getfattr, which uses the most attributes: */ #define nfs4_fattr_value_maxsz (1 + (1 + 2 + 2 + 4 + 2 + 1 + 1 + 2 + 2 + \ - 3 + 3 + 3 + nfs4_owner_maxsz + \ + 3*nfstime4_maxsz + \ + nfs4_owner_maxsz + \ nfs4_group_maxsz + nfs4_label_maxsz + \ decode_mdsthreshold_maxsz)) #define nfs4_fattr_maxsz (nfs4_fattr_bitmap_maxsz + \ @@ -124,7 +126,8 @@ static int nfs4_stat_to_errno(int); nfs4_owner_maxsz + \ nfs4_group_maxsz + \ nfs4_label_maxsz + \ - 4 + 4) + 1 + nfstime4_maxsz + \ + 1 + nfstime4_maxsz) #define encode_savefh_maxsz (op_encode_hdr_maxsz) #define decode_savefh_maxsz (op_decode_hdr_maxsz) #define encode_restorefh_maxsz (op_encode_hdr_maxsz) @@ -1041,6 +1044,14 @@ static void encode_nfs4_verifier(struct xdr_stream *xdr, const nfs4_verifier *ve encode_opaque_fixed(xdr, verf->data, NFS4_VERIFIER_SIZE); } +static __be32 * +xdr_encode_nfstime4(__be32 *p, const struct timespec *t) +{ + p = xdr_encode_hyper(p, (__s64)t->tv_sec); + *p++ = cpu_to_be32(t->tv_nsec); + return p; +} + static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, const struct nfs4_label *label, const umode_t *umask, @@ -1100,7 +1111,7 @@ static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, if (attrmask[1] & FATTR4_WORD1_TIME_ACCESS_SET) { if (iap->ia_valid & ATTR_ATIME_SET) { bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET; - len += 16; + len += 4 + (nfstime4_maxsz << 2); } else if (iap->ia_valid & ATTR_ATIME) { bmval[1] |= FATTR4_WORD1_TIME_ACCESS_SET; len += 4; @@ -1109,7 +1120,7 @@ static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, if (attrmask[1] & FATTR4_WORD1_TIME_MODIFY_SET) { if (iap->ia_valid & ATTR_MTIME_SET) { bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET; - len += 16; + len += 4 + (nfstime4_maxsz << 2); } else if (iap->ia_valid & ATTR_MTIME) { bmval[1] |= FATTR4_WORD1_TIME_MODIFY_SET; len += 4; @@ -1135,16 +1146,14 @@ static void encode_attrs(struct xdr_stream *xdr, const struct iattr *iap, if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { if (iap->ia_valid & ATTR_ATIME_SET) { *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME); - p = xdr_encode_hyper(p, (s64)iap->ia_atime.tv_sec); - *p++ = cpu_to_be32(iap->ia_atime.tv_nsec); + p = xdr_encode_nfstime4(p, &iap->ia_atime); } else *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME); } if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { if (iap->ia_valid & ATTR_MTIME_SET) { *p++ = cpu_to_be32(NFS4_SET_TO_CLIENT_TIME); - p = xdr_encode_hyper(p, (s64)iap->ia_mtime.tv_sec); - *p++ = cpu_to_be32(iap->ia_mtime.tv_nsec); + p = xdr_encode_nfstime4(p, &iap->ia_mtime); } else *p++ = cpu_to_be32(NFS4_SET_TO_SERVER_TIME); } @@ -4129,19 +4138,25 @@ out_overflow: return -EIO; } +static __be32 * +xdr_decode_nfstime4(__be32 *p, struct timespec *t) +{ + __u64 sec; + + p = xdr_decode_hyper(p, &sec); + t-> tv_sec = (time_t)sec; + t->tv_nsec = be32_to_cpup(p++); + return p; +} + static int decode_attr_time(struct xdr_stream *xdr, struct timespec *time) { __be32 *p; - uint64_t sec; - uint32_t nsec; - p = xdr_inline_decode(xdr, 12); + p = xdr_inline_decode(xdr, nfstime4_maxsz << 2); if (unlikely(!p)) goto out_overflow; - p = xdr_decode_hyper(p, &sec); - nsec = be32_to_cpup(p); - time->tv_sec = (time_t)sec; - time->tv_nsec = (long)nsec; + xdr_decode_nfstime4(p, time); return 0; out_overflow: print_overflow_msg(__func__, xdr); -- cgit From 8bcbe7d98cffb60efdea40e36171c58dcc2bdd31 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 20 Mar 2018 17:03:11 -0400 Subject: NFSv4: Don't ask for attributes when ACCESS is protected by a delegation If we hold a delegation, then the results of the ACCESS call are protected anyway. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 13 ++++++++----- fs/nfs/nfs4xdr.c | 6 ++++-- 2 files changed, 12 insertions(+), 7 deletions(-) (limited to 'fs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index e5ad2c186927..924238db5983 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -4055,7 +4055,6 @@ static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry struct nfs_server *server = NFS_SERVER(inode); struct nfs4_accessargs args = { .fh = NFS_FH(inode), - .bitmask = server->cache_consistency_bitmask, .access = entry->mask, }; struct nfs4_accessres res = { @@ -4069,14 +4068,18 @@ static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry }; int status = 0; - res.fattr = nfs_alloc_fattr(); - if (res.fattr == NULL) - return -ENOMEM; + if (!nfs_have_delegated_attributes(inode)) { + res.fattr = nfs_alloc_fattr(); + if (res.fattr == NULL) + return -ENOMEM; + args.bitmask = server->cache_consistency_bitmask; + } status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); if (!status) { nfs_access_set_mask(entry, res.access); - nfs_refresh_inode(inode, res.fattr); + if (res.fattr) + nfs_refresh_inode(inode, res.fattr); } nfs_free_fattr(res.fattr); return status; diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 79f1774b9d68..51264f5d9d2a 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -2102,7 +2102,8 @@ static void nfs4_xdr_enc_access(struct rpc_rqst *req, struct xdr_stream *xdr, encode_sequence(xdr, &args->seq_args, &hdr); encode_putfh(xdr, args->fh, &hdr); encode_access(xdr, args->access, &hdr); - encode_getfattr(xdr, args->bitmask, &hdr); + if (args->bitmask) + encode_getfattr(xdr, args->bitmask, &hdr); encode_nops(&hdr); } @@ -6236,7 +6237,8 @@ static int nfs4_xdr_dec_access(struct rpc_rqst *rqstp, struct xdr_stream *xdr, status = decode_access(xdr, &res->supported, &res->access); if (status != 0) goto out; - decode_getfattr(xdr, res->fattr, res->server); + if (res->fattr) + decode_getfattr(xdr, res->fattr, res->server); out: return status; } -- cgit From 8b0649462407ec4192cacd0f283627b38f24aa5c Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 20 Mar 2018 17:03:12 -0400 Subject: NFSv4: Clean up CB_GETATTR encoding Replace the open coded bitmap implementation with a generic one. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/callback_xdr.c | 37 ++++++++----------------------------- 1 file changed, 8 insertions(+), 29 deletions(-) (limited to 'fs') diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c index 123c069429a7..a813979b5be0 100644 --- a/fs/nfs/callback_xdr.c +++ b/fs/nfs/callback_xdr.c @@ -535,35 +535,10 @@ static __be32 encode_string(struct xdr_stream *xdr, unsigned int len, const char return 0; } -#define CB_SUPPORTED_ATTR0 (FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE) -#define CB_SUPPORTED_ATTR1 (FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY) -static __be32 encode_attr_bitmap(struct xdr_stream *xdr, const uint32_t *bitmap, __be32 **savep) +static __be32 encode_attr_bitmap(struct xdr_stream *xdr, const uint32_t *bitmap, size_t sz) { - __be32 bm[2]; - __be32 *p; - - bm[0] = htonl(bitmap[0] & CB_SUPPORTED_ATTR0); - bm[1] = htonl(bitmap[1] & CB_SUPPORTED_ATTR1); - if (bm[1] != 0) { - p = xdr_reserve_space(xdr, 16); - if (unlikely(p == NULL)) - return htonl(NFS4ERR_RESOURCE); - *p++ = htonl(2); - *p++ = bm[0]; - *p++ = bm[1]; - } else if (bm[0] != 0) { - p = xdr_reserve_space(xdr, 12); - if (unlikely(p == NULL)) - return htonl(NFS4ERR_RESOURCE); - *p++ = htonl(1); - *p++ = bm[0]; - } else { - p = xdr_reserve_space(xdr, 8); - if (unlikely(p == NULL)) - return htonl(NFS4ERR_RESOURCE); - *p++ = htonl(0); - } - *savep = p; + if (xdr_stream_encode_uint32_array(xdr, bitmap, sz) < 0) + return cpu_to_be32(NFS4ERR_RESOURCE); return 0; } @@ -656,9 +631,13 @@ static __be32 encode_getattr_res(struct svc_rqst *rqstp, struct xdr_stream *xdr, if (unlikely(status != 0)) goto out; - status = encode_attr_bitmap(xdr, res->bitmap, &savep); + status = encode_attr_bitmap(xdr, res->bitmap, ARRAY_SIZE(res->bitmap)); if (unlikely(status != 0)) goto out; + status = cpu_to_be32(NFS4ERR_RESOURCE); + savep = xdr_reserve_space(xdr, sizeof(*savep)); + if (unlikely(!savep)) + goto out; status = encode_attr_change(xdr, res->bitmap, res->change_attr); if (unlikely(status != 0)) goto out; -- cgit From 35156bfff3c0cd44d0e2e674530e0817fd22b313 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 20 Mar 2018 17:03:13 -0400 Subject: NFSv4: Fix the nfs_inode_set_delegation() arguments Neither nfs_inode_set_delegation() nor nfs_inode_reclaim_delegation() are generic code. They have no business delving into NFSv4 OPEN xdr structures, so let's replace the "struct nfs_openres" parameter. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/delegation.c | 35 ++++++++++++++++++++++------------- fs/nfs/delegation.h | 6 ++++-- fs/nfs/nfs4proc.c | 12 ++++++++---- 3 files changed, 34 insertions(+), 19 deletions(-) (limited to 'fs') diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c index a5cb44375100..1819d0d0ba4b 100644 --- a/fs/nfs/delegation.c +++ b/fs/nfs/delegation.c @@ -172,11 +172,15 @@ again: * nfs_inode_reclaim_delegation - process a delegation reclaim request * @inode: inode to process * @cred: credential to use for request - * @res: new delegation state from server + * @type: delegation type + * @stateid: delegation stateid + * @pagemod_limit: write delegation "space_limit" * */ void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, - struct nfs_openres *res) + fmode_t type, + const nfs4_stateid *stateid, + unsigned long pagemod_limit) { struct nfs_delegation *delegation; struct rpc_cred *oldcred = NULL; @@ -186,9 +190,9 @@ void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, if (delegation != NULL) { spin_lock(&delegation->lock); if (delegation->inode != NULL) { - nfs4_stateid_copy(&delegation->stateid, &res->delegation); - delegation->type = res->delegation_type; - delegation->pagemod_limit = res->pagemod_limit; + nfs4_stateid_copy(&delegation->stateid, stateid); + delegation->type = type; + delegation->pagemod_limit = pagemod_limit; oldcred = delegation->cred; delegation->cred = get_rpccred(cred); clear_bit(NFS_DELEGATION_NEED_RECLAIM, @@ -196,14 +200,14 @@ void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, spin_unlock(&delegation->lock); rcu_read_unlock(); put_rpccred(oldcred); - trace_nfs4_reclaim_delegation(inode, res->delegation_type); + trace_nfs4_reclaim_delegation(inode, type); return; } /* We appear to have raced with a delegation return. */ spin_unlock(&delegation->lock); } rcu_read_unlock(); - nfs_inode_set_delegation(inode, cred, res); + nfs_inode_set_delegation(inode, cred, type, stateid, pagemod_limit); } static int nfs_do_return_delegation(struct inode *inode, struct nfs_delegation *delegation, int issync) @@ -330,11 +334,16 @@ nfs_update_inplace_delegation(struct nfs_delegation *delegation, * nfs_inode_set_delegation - set up a delegation on an inode * @inode: inode to which delegation applies * @cred: cred to use for subsequent delegation processing - * @res: new delegation state from server + * @type: delegation type + * @stateid: delegation stateid + * @pagemod_limit: write delegation "space_limit" * * Returns zero on success, or a negative errno value. */ -int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res) +int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, + fmode_t type, + const nfs4_stateid *stateid, + unsigned long pagemod_limit) { struct nfs_server *server = NFS_SERVER(inode); struct nfs_client *clp = server->nfs_client; @@ -346,9 +355,9 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct delegation = kmalloc(sizeof(*delegation), GFP_NOFS); if (delegation == NULL) return -ENOMEM; - nfs4_stateid_copy(&delegation->stateid, &res->delegation); - delegation->type = res->delegation_type; - delegation->pagemod_limit = res->pagemod_limit; + nfs4_stateid_copy(&delegation->stateid, stateid); + delegation->type = type; + delegation->pagemod_limit = pagemod_limit; delegation->change_attr = inode_peek_iversion_raw(inode); delegation->cred = get_rpccred(cred); delegation->inode = inode; @@ -393,7 +402,7 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct rcu_assign_pointer(nfsi->delegation, delegation); delegation = NULL; - trace_nfs4_set_delegation(inode, res->delegation_type); + trace_nfs4_set_delegation(inode, type); out: spin_unlock(&clp->cl_lock); diff --git a/fs/nfs/delegation.h b/fs/nfs/delegation.h index dcc8a783a6e1..bb1ef8c37af4 100644 --- a/fs/nfs/delegation.h +++ b/fs/nfs/delegation.h @@ -36,8 +36,10 @@ enum { NFS_DELEGATION_TEST_EXPIRED, }; -int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res); -void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res); +int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, + fmode_t type, const nfs4_stateid *stateid, unsigned long pagemod_limit); +void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, + fmode_t type, const nfs4_stateid *stateid, unsigned long pagemod_limit); int nfs4_inode_return_delegation(struct inode *inode); int nfs_async_inode_return_delegation(struct inode *inode, const nfs4_stateid *stateid); void nfs_inode_return_delegation_noreclaim(struct inode *inode); diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 924238db5983..3eb53d7784e2 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -1754,12 +1754,16 @@ nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state) } if ((delegation_flags & 1UL<inode, - data->owner->so_cred, - &data->o_res); + data->owner->so_cred, + data->o_res.delegation_type, + &data->o_res.delegation, + data->o_res.pagemod_limit); else nfs_inode_reclaim_delegation(state->inode, - data->owner->so_cred, - &data->o_res); + data->owner->so_cred, + data->o_res.delegation_type, + &data->o_res.delegation, + data->o_res.pagemod_limit); } /* -- cgit From aae5730e2d32d779b31c81fa62e79c8e3bba1ac2 Mon Sep 17 00:00:00 2001 From: Matthew Wilcox Date: Wed, 14 Mar 2018 19:48:27 -0700 Subject: nfs: Use ida_simple API Allocate the owner_id when we allocate the state and free it when we free the state. That lets us get rid of a gnarly ida_pre_get() / ida_get_new() loop. Signed-off-by: Matthew Wilcox Reviewed-by: Jeff Layton Signed-off-by: Anna Schumaker --- fs/nfs/nfs4state.c | 22 ++++++++++------------ 1 file changed, 10 insertions(+), 12 deletions(-) (limited to 'fs') diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 91a4d4eeb235..c10a422efe6f 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -428,7 +428,6 @@ nfs4_insert_state_owner_locked(struct nfs4_state_owner *new) struct rb_node **p = &server->state_owners.rb_node, *parent = NULL; struct nfs4_state_owner *sp; - int err; while (*p != NULL) { parent = *p; @@ -445,9 +444,6 @@ nfs4_insert_state_owner_locked(struct nfs4_state_owner *new) return sp; } } - err = ida_get_new(&server->openowner_id, &new->so_seqid.owner_id); - if (err) - return ERR_PTR(err); rb_link_node(&new->so_server_node, parent, p); rb_insert_color(&new->so_server_node, &server->state_owners); return new; @@ -460,7 +456,6 @@ nfs4_remove_state_owner_locked(struct nfs4_state_owner *sp) if (!RB_EMPTY_NODE(&sp->so_server_node)) rb_erase(&sp->so_server_node, &server->state_owners); - ida_remove(&server->openowner_id, sp->so_seqid.owner_id); } static void @@ -495,6 +490,12 @@ nfs4_alloc_state_owner(struct nfs_server *server, sp = kzalloc(sizeof(*sp), gfp_flags); if (!sp) return NULL; + sp->so_seqid.owner_id = ida_simple_get(&server->openowner_id, 0, 0, + gfp_flags); + if (sp->so_seqid.owner_id < 0) { + kfree(sp); + return NULL; + } sp->so_server = server; sp->so_cred = get_rpccred(cred); spin_lock_init(&sp->so_lock); @@ -526,6 +527,7 @@ static void nfs4_free_state_owner(struct nfs4_state_owner *sp) { nfs4_destroy_seqid_counter(&sp->so_seqid); put_rpccred(sp->so_cred); + ida_simple_remove(&sp->so_server->openowner_id, sp->so_seqid.owner_id); kfree(sp); } @@ -576,13 +578,9 @@ struct nfs4_state_owner *nfs4_get_state_owner(struct nfs_server *server, new = nfs4_alloc_state_owner(server, cred, gfp_flags); if (new == NULL) goto out; - do { - if (ida_pre_get(&server->openowner_id, gfp_flags) == 0) - break; - spin_lock(&clp->cl_lock); - sp = nfs4_insert_state_owner_locked(new); - spin_unlock(&clp->cl_lock); - } while (sp == ERR_PTR(-EAGAIN)); + spin_lock(&clp->cl_lock); + sp = nfs4_insert_state_owner_locked(new); + spin_unlock(&clp->cl_lock); if (sp != new) nfs4_free_state_owner(new); out: -- cgit From f6cdfa6dd629604d6a6af4de92b9c6eea6d52b1c Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 27 Mar 2018 17:10:42 -0400 Subject: NFSv4: Declare the size up to date after it was set. When we've changed the file size, then ensure we declare it to be up to date in the inode attributes. Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker --- fs/nfs/inode.c | 1 + fs/nfs/write.c | 1 + 2 files changed, 2 insertions(+) (limited to 'fs') diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index a2c5d4ad4535..ba73eda0600e 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -646,6 +646,7 @@ static int nfs_vmtruncate(struct inode * inode, loff_t offset) /* Optimisation */ if (offset == 0) NFS_I(inode)->cache_validity &= ~NFS_INO_INVALID_DATA; + NFS_I(inode)->cache_validity &= ~NFS_INO_INVALID_SIZE; spin_unlock(&inode->i_lock); truncate_pagecache(inode, offset); diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 3efce54ef1cd..541471a32784 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -231,6 +231,7 @@ static void nfs_grow_file(struct page *page, unsigned int offset, unsigned int c if (i_size >= end) goto out; i_size_write(inode, end); + NFS_I(inode)->cache_validity &= ~NFS_INO_INVALID_SIZE; nfs_inc_stats(inode, NFSIOS_EXTENDWRITE); out: spin_unlock(&inode->i_lock); -- cgit From 609339c123843ace16d6b17f10205cd61460ab02 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Wed, 28 Mar 2018 16:18:17 -0400 Subject: NFSv4.1: Fix exclusive create When we use EXCLUSIVE4_1 mode, the server returns an attribute mask where all the bits indicate which attributes were set, and where the verifier was stored. In order to figure out which attribute we have to resend, we need to clear out the attributes that are set in exclcreat_bitmask. Signed-off-by: Trond Myklebust [Anna: Fixed typo NFS4_CREATE_EXCLUSIVE4 -> NFS4_CREATE_EXCLUSIVE] Signed-off-by: Anna Schumaker --- fs/nfs/nfs4proc.c | 49 +++++++++++++++++++++++++++++++++---------------- 1 file changed, 33 insertions(+), 16 deletions(-) (limited to 'fs') diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 3eb53d7784e2..b71757e85066 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2750,27 +2750,40 @@ static int nfs41_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *st * fields corresponding to attributes that were used to store the verifier. * Make sure we clobber those fields in the later setattr call */ -static inline void nfs4_exclusive_attrset(struct nfs4_opendata *opendata, +static unsigned nfs4_exclusive_attrset(struct nfs4_opendata *opendata, struct iattr *sattr, struct nfs4_label **label) { - const u32 *attrset = opendata->o_res.attrset; + const __u32 *bitmask = opendata->o_arg.server->exclcreat_bitmask; + __u32 attrset[3]; + unsigned ret; + unsigned i; - if ((attrset[1] & FATTR4_WORD1_TIME_ACCESS) && - !(sattr->ia_valid & ATTR_ATIME_SET)) - sattr->ia_valid |= ATTR_ATIME; + for (i = 0; i < ARRAY_SIZE(attrset); i++) { + attrset[i] = opendata->o_res.attrset[i]; + if (opendata->o_arg.createmode == NFS4_CREATE_EXCLUSIVE4_1) + attrset[i] &= ~bitmask[i]; + } + + ret = (opendata->o_arg.createmode == NFS4_CREATE_EXCLUSIVE) ? + sattr->ia_valid : 0; - if ((attrset[1] & FATTR4_WORD1_TIME_MODIFY) && - !(sattr->ia_valid & ATTR_MTIME_SET)) - sattr->ia_valid |= ATTR_MTIME; + if ((attrset[1] & (FATTR4_WORD1_TIME_ACCESS|FATTR4_WORD1_TIME_ACCESS_SET))) { + if (sattr->ia_valid & ATTR_ATIME_SET) + ret |= ATTR_ATIME_SET; + else + ret |= ATTR_ATIME; + } - /* Except MODE, it seems harmless of setting twice. */ - if (opendata->o_arg.createmode != NFS4_CREATE_EXCLUSIVE && - (attrset[1] & FATTR4_WORD1_MODE || - attrset[2] & FATTR4_WORD2_MODE_UMASK)) - sattr->ia_valid &= ~ATTR_MODE; + if ((attrset[1] & (FATTR4_WORD1_TIME_MODIFY|FATTR4_WORD1_TIME_MODIFY_SET))) { + if (sattr->ia_valid & ATTR_MTIME_SET) + ret |= ATTR_MTIME_SET; + else + ret |= ATTR_MTIME; + } - if (attrset[2] & FATTR4_WORD2_SECURITY_LABEL) + if (!(attrset[2] & FATTR4_WORD2_SECURITY_LABEL)) *label = NULL; + return ret; } static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, @@ -2899,12 +2912,15 @@ static int _nfs4_do_open(struct inode *dir, if ((opendata->o_arg.open_flags & (O_CREAT|O_EXCL)) == (O_CREAT|O_EXCL) && (opendata->o_arg.createmode != NFS4_CREATE_GUARDED)) { - nfs4_exclusive_attrset(opendata, sattr, &label); + unsigned attrs = nfs4_exclusive_attrset(opendata, sattr, &label); /* * send create attributes which was not set by open * with an extra setattr. */ - if (sattr->ia_valid & NFS4_VALID_ATTRS) { + if (attrs || label) { + unsigned ia_old = sattr->ia_valid; + + sattr->ia_valid = attrs; nfs_fattr_init(opendata->o_res.f_attr); status = nfs4_do_setattr(state->inode, cred, opendata->o_res.f_attr, sattr, @@ -2914,6 +2930,7 @@ static int _nfs4_do_open(struct inode *dir, opendata->o_res.f_attr); nfs_setsecurity(state->inode, opendata->o_res.f_attr, olabel); } + sattr->ia_valid = ia_old; } } if (opened && opendata->file_created) -- cgit From dbc898ae107104ef49fd977a593e521fcefab5aa Mon Sep 17 00:00:00 2001 From: chendt Date: Thu, 29 Mar 2018 16:13:09 +0800 Subject: NFSv3/acl: forget acl cache after setattr MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sync of ACL with std permissions fail，We need to forget the ACL cache after setattr. Reproduction: #!/bin/bash touch testfile cat <testfile #!/bin/bash echo "Test was executed" EOF chmod u=rwx testfile chmod g=rw- testfile chmod o=r-- testfile chacl u::r--,g::rwx,o:rw- testfile chmod u+w testfile ls -l testfile chacl -l testfile Output： -rw-rwxrw- 1 root root 0 Mar 28 05:29 testfile testfile [u::r--,g::rwx,o::rw-] Signed-off-by: chendt.fnst Reviewed-by: Benjamin Coddington Reviewed-by: Kinglong Mee Signed-off-by: Anna Schumaker --- fs/nfs/nfs3proc.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'fs') diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index cc04d988db7c..eadf1ab31d16 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -138,8 +138,11 @@ nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, msg.rpc_cred = nfs_file_cred(sattr->ia_file); nfs_fattr_init(fattr); status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0); - if (status == 0) + if (status == 0) { + if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_ACL) + nfs_zap_acl_cache(inode); nfs_setattr_update_inode(inode, sattr, fattr); + } dprintk("NFS reply setattr: %d\n", status); return status; } -- cgit From 98de9ce6f6660d02aa72d7b9b17696fa68a2ed9b Mon Sep 17 00:00:00 2001 From: Frank Sorenson Date: Mon, 2 Apr 2018 16:12:45 -0500 Subject: NFS: advance nfs_entry cookie only after decoding completes successfully In nfs[34]_decode_dirent, the cookie is advanced as soon as it is read, but decoding may still fail later in the function, returning an error. Because the cookie has been advanced, the failing entry is not re-requested from the server, resulting in a missing directory entry. In addition, nfs v3 and v4 read the cookie at different locations in the xdr_stream, so the behavior of the two can be inconsistent. Fix these by reading the cookie into a temporary variable, and only advancing the cookie once the entire entry has been decoded from the xdr_stream successfully. Signed-off-by: Frank Sorenson Signed-off-by: Anna Schumaker --- fs/nfs/nfs3xdr.c | 7 +++++-- fs/nfs/nfs4xdr.c | 7 +++++-- 2 files changed, 10 insertions(+), 4 deletions(-) (limited to 'fs') diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c index 6cd33bd5da87..09ee36dd8426 100644 --- a/fs/nfs/nfs3xdr.c +++ b/fs/nfs/nfs3xdr.c @@ -1997,6 +1997,7 @@ int nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, struct nfs_entry old = *entry; __be32 *p; int error; + u64 new_cookie; p = xdr_inline_decode(xdr, 4); if (unlikely(p == NULL)) @@ -2019,8 +2020,7 @@ int nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, if (unlikely(error)) return error; - entry->prev_cookie = entry->cookie; - error = decode_cookie3(xdr, &entry->cookie); + error = decode_cookie3(xdr, &new_cookie); if (unlikely(error)) return error; @@ -2054,6 +2054,9 @@ int nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, zero_nfs_fh3(entry->fh); } + entry->prev_cookie = entry->cookie; + entry->cookie = new_cookie; + return 0; out_overflow: diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 51264f5d9d2a..aa550fb08d2a 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -7518,6 +7518,7 @@ int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, unsigned int savep; uint32_t bitmap[3] = {0}; uint32_t len; + uint64_t new_cookie; __be32 *p = xdr_inline_decode(xdr, 4); if (unlikely(!p)) goto out_overflow; @@ -7534,8 +7535,7 @@ int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, p = xdr_inline_decode(xdr, 12); if (unlikely(!p)) goto out_overflow; - entry->prev_cookie = entry->cookie; - p = xdr_decode_hyper(p, &entry->cookie); + p = xdr_decode_hyper(p, &new_cookie); entry->len = be32_to_cpup(p); p = xdr_inline_decode(xdr, entry->len); @@ -7569,6 +7569,9 @@ int nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, if (entry->fattr->valid & NFS_ATTR_FATTR_TYPE) entry->d_type = nfs_umode_to_dtype(entry->fattr->mode); + entry->prev_cookie = entry->cookie; + entry->cookie = new_cookie; + return 0; out_overflow: -- cgit