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[50.36.89.147]) by smtp.gmail.com with ESMTPSA id b15-v6sm1751038itb.25.2018.07.31.10.24.49 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 31 Jul 2018 10:24:49 -0700 (PDT) From: Trond Myklebust X-Google-Original-From: Trond Myklebust To: Anna Schumaker Cc: linux-nfs@vger.kernel.org Subject: [PATCH v2 2/3] NFSv4: Detect nlink changes on cross-directory renames too Date: Tue, 31 Jul 2018 13:24:25 -0400 Message-Id: <20180731172426.6491-3-trond.myklebust@hammerspace.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180731172426.6491-2-trond.myklebust@hammerspace.com> References: <20180731172426.6491-1-trond.myklebust@hammerspace.com> <20180731172426.6491-2-trond.myklebust@hammerspace.com> MIME-Version: 1.0 Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP If the object being renamed from one directory to another is also a directory, then 'nlink' will change for both directories. Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 35 +++++++++++++++++++++++------------ 1 file changed, 23 insertions(+), 12 deletions(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 0d56d3662005..9d181d76c744 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -1087,13 +1087,14 @@ nfs4_dec_nlink_locked(struct inode *inode) static void update_changeattr_locked(struct inode *dir, struct nfs4_change_info *cinfo, - unsigned long timestamp) + unsigned long timestamp, unsigned long cache_validity) { struct nfs_inode *nfsi = NFS_I(dir); nfsi->cache_validity |= NFS_INO_INVALID_CTIME | NFS_INO_INVALID_MTIME - | NFS_INO_INVALID_DATA; + | NFS_INO_INVALID_DATA + | cache_validity; if (cinfo->atomic && cinfo->before == inode_peek_iversion_raw(dir)) { nfsi->cache_validity &= ~NFS_INO_REVAL_PAGECACHE; nfsi->attrtimeo_timestamp = jiffies; @@ -1111,10 +1112,10 @@ update_changeattr_locked(struct inode *dir, struct nfs4_change_info *cinfo, static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo, - unsigned long timestamp) + unsigned long timestamp, unsigned long cache_validity) { spin_lock(&dir->i_lock); - update_changeattr_locked(dir, cinfo, timestamp); + update_changeattr_locked(dir, cinfo, timestamp, cache_validity); spin_unlock(&dir->i_lock); } @@ -2503,7 +2504,7 @@ static int _nfs4_proc_open(struct nfs4_opendata *data, if (data->file_created || inode_peek_iversion_raw(dir) != o_res->cinfo.after) update_changeattr(dir, &o_res->cinfo, - o_res->f_attr->time_start); + o_res->f_attr->time_start, 0); } if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0) server->caps &= ~NFS_CAP_POSIX_LOCK; @@ -4281,7 +4282,7 @@ _nfs4_proc_remove(struct inode *dir, const struct qstr *name, u32 ftype) status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1); if (status == 0) { spin_lock(&dir->i_lock); - update_changeattr_locked(dir, &res.cinfo, timestamp); + update_changeattr_locked(dir, &res.cinfo, timestamp, 0); /* Removing a directory decrements nlink in the parent */ if (ftype == NF4DIR && dir->i_nlink > 2) nfs4_dec_nlink_locked(dir); @@ -4361,7 +4362,8 @@ static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) &data->timeout) == -EAGAIN) return 0; if (task->tk_status == 0) - update_changeattr(dir, &res->cinfo, res->dir_attr->time_start); + update_changeattr(dir, &res->cinfo, + res->dir_attr->time_start, 0); return 1; } @@ -4403,9 +4405,18 @@ static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, return 0; if (task->tk_status == 0) { - update_changeattr(old_dir, &res->old_cinfo, res->old_fattr->time_start); - if (new_dir != old_dir) - update_changeattr(new_dir, &res->new_cinfo, res->new_fattr->time_start); + if (new_dir != old_dir) { + /* Note: If we moved a directory, nlink will change */ + update_changeattr(old_dir, &res->old_cinfo, + res->old_fattr->time_start, + NFS_INO_INVALID_OTHER); + update_changeattr(new_dir, &res->new_cinfo, + res->new_fattr->time_start, + NFS_INO_INVALID_OTHER); + } else + update_changeattr(old_dir, &res->old_cinfo, + res->old_fattr->time_start, + 0); } return 1; } @@ -4446,7 +4457,7 @@ static int _nfs4_proc_link(struct inode *inode, struct inode *dir, const struct 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); + update_changeattr(dir, &res.cinfo, res.fattr->time_start, 0); status = nfs_post_op_update_inode(inode, res.fattr); if (!status) nfs_setsecurity(inode, res.fattr, res.label); @@ -4523,7 +4534,7 @@ static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_ if (status == 0) { spin_lock(&dir->i_lock); update_changeattr_locked(dir, &data->res.dir_cinfo, - data->res.fattr->time_start); + data->res.fattr->time_start, 0); /* Creating a directory bumps nlink in the parent */ if (data->arg.ftype == NF4DIR) nfs4_inc_nlink_locked(dir);