commit d3129ef672cac81c4d0185336af377c8dc1091d3
author Trond Myklebust <trond.myklebust@primarydata.com> Wed Jan 11 22:07:28 2017 -0500
committer Trond Myklebust <trond.myklebust@primarydata.com> Thu Jan 12 15:51:19 2017 -0500
tree 210ee244346b76a8fe9796dba5353db903e0a5ec
parent c40d52fe1c2ba25dcb8cd207c8d26ef5f57f0476

NFSv4: update_changeattr should update the attribute timestamp

Otherwise, the attribute cache remains marked as being expired.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

fs/nfs/nfs4proc.c

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 6a35204..ecc1516 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1082,7 +1082,8 @@
 	return nfs4_call_sync_sequence(clnt, server, msg, args, res);
 }
 
-static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo)
+static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo,
+		unsigned long timestamp)
 {
 	struct nfs_inode *nfsi = NFS_I(dir);
 
@@ -1098,6 +1099,7 @@
 				NFS_INO_INVALID_ACL;
 	}
 	dir->i_version = cinfo->after;
+	nfsi->read_cache_jiffies = timestamp;
 	nfsi->attr_gencount = nfs_inc_attr_generation_counter();
 	nfs_fscache_invalidate(dir);
 	spin_unlock(&dir->i_lock);
@@ -2395,7 +2397,8 @@
 		else if (o_res->cinfo.before != o_res->cinfo.after)
 			data->file_created = 1;
 		if (data->file_created || dir->i_version != o_res->cinfo.after)
-			update_changeattr(dir, &o_res->cinfo);
+			update_changeattr(dir, &o_res->cinfo,
+					o_res->f_attr->time_start);
 	}
 	if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0)
 		server->caps &= ~NFS_CAP_POSIX_LOCK;
@@ -4073,11 +4076,12 @@
 		.rpc_argp = &args,
 		.rpc_resp = &res,
 	};
+	unsigned long timestamp = jiffies;
 	int status;
 
 	status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1);
 	if (status == 0)
-		update_changeattr(dir, &res.cinfo);
+		update_changeattr(dir, &res.cinfo, timestamp);
 	return status;
 }
 
@@ -4126,7 +4130,7 @@
 				    &data->timeout) == -EAGAIN)
 		return 0;
 	if (task->tk_status == 0)
-		update_changeattr(dir, &res->cinfo);
+		update_changeattr(dir, &res->cinfo, res->dir_attr->time_start);
 	return 1;
 }
 
@@ -4161,9 +4165,9 @@
 		return 0;
 
 	if (task->tk_status == 0) {
-		update_changeattr(old_dir, &res->old_cinfo);
+		update_changeattr(old_dir, &res->old_cinfo, res->old_fattr->time_start);
 		if (new_dir != old_dir)
-			update_changeattr(new_dir, &res->new_cinfo);
+			update_changeattr(new_dir, &res->new_cinfo, res->new_fattr->time_start);
 	}
 	return 1;
 }
@@ -4201,7 +4205,7 @@
 
 	status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
 	if (!status) {
-		update_changeattr(dir, &res.cinfo);
+		update_changeattr(dir, &res.cinfo, res.fattr->time_start);
 		status = nfs_post_op_update_inode(inode, res.fattr);
 		if (!status)
 			nfs_setsecurity(inode, res.fattr, res.label);
@@ -4276,7 +4280,8 @@
 	int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg,
 				    &data->arg.seq_args, &data->res.seq_res, 1);
 	if (status == 0) {
-		update_changeattr(dir, &data->res.dir_cinfo);
+		update_changeattr(dir, &data->res.dir_cinfo,
+				data->res.fattr->time_start);
 		status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label);
 	}
 	return status;