From 480e5ae9b860c8a1c74ab9414f9bd78a43ad356f Mon Sep 17 00:00:00 2001
From: Martin Brandenburg
Date: Tue, 6 Feb 2018 14:01:25 +0000
Subject: orangefs: simplify orangefs_inode_is_stale

Check whether this is a new inode at location of call.

Raises the question of what to do with an unknown inode type.  Old code
would've marked the inode bad and returned ESTALE.

Signed-off-by: Martin Brandenburg <martin@omnibond.com>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
---
 fs/orangefs/orangefs-utils.c | 54 ++++++++++++++++++++++++--------------------
 1 file changed, 30 insertions(+), 24 deletions(-)

diff --git a/fs/orangefs/orangefs-utils.c b/fs/orangefs/orangefs-utils.c
index ccddfcab7fc0..ea6256d136d1 100644
--- a/fs/orangefs/orangefs-utils.c
+++ b/fs/orangefs/orangefs-utils.c
@@ -249,25 +249,23 @@ static void orangefs_make_bad_inode(struct inode *inode)
 	}
 }
 
-static int orangefs_inode_is_stale(struct inode *inode, int new,
+static int orangefs_inode_is_stale(struct inode *inode,
     struct ORANGEFS_sys_attr_s *attrs, char *link_target)
 {
 	struct orangefs_inode_s *orangefs_inode = ORANGEFS_I(inode);
 	int type = orangefs_inode_type(attrs->objtype);
-	if (!new) {
-		/*
-		 * If the inode type or symlink target have changed then this
-		 * inode is stale.
-		 */
-		if (type == -1 || !(inode->i_mode & type)) {
-			orangefs_make_bad_inode(inode);
-			return 1;
-		}
-		if (type == S_IFLNK && strncmp(orangefs_inode->link_target,
-		    link_target, ORANGEFS_NAME_MAX)) {
-			orangefs_make_bad_inode(inode);
-			return 1;
-		}
+	/*
+	 * If the inode type or symlink target have changed then this
+	 * inode is stale.
+	 */
+	if (type == -1 || !(inode->i_mode & type)) {
+		orangefs_make_bad_inode(inode);
+		return 1;
+	}
+	if (type == S_IFLNK && strncmp(orangefs_inode->link_target,
+	    link_target, ORANGEFS_NAME_MAX)) {
+		orangefs_make_bad_inode(inode);
+		return 1;
 	}
 	return 0;
 }
@@ -313,16 +311,18 @@ int orangefs_inode_getattr(struct inode *inode, int new, int bypass,
 	if (ret != 0)
 		goto out;
 
-	type = orangefs_inode_type(new_op->
-	    downcall.resp.getattr.attributes.objtype);
-	ret = orangefs_inode_is_stale(inode, new,
-	    &new_op->downcall.resp.getattr.attributes,
-	    new_op->downcall.resp.getattr.link_target);
-	if (ret) {
-		ret = -ESTALE;
-		goto out;
+	if (!new) {
+		ret = orangefs_inode_is_stale(inode,
+		    &new_op->downcall.resp.getattr.attributes,
+		    new_op->downcall.resp.getattr.link_target);
+		if (ret) {
+			ret = -ESTALE;
+			goto out;
+		}
 	}
 
+	type = orangefs_inode_type(new_op->
+	    downcall.resp.getattr.attributes.objtype);
 	switch (type) {
 	case S_IFREG:
 		inode->i_flags = orangefs_inode_flags(&new_op->
@@ -367,6 +367,12 @@ int orangefs_inode_getattr(struct inode *inode, int new, int bypass,
 			inode->i_link = orangefs_inode->link_target;
 		}
 		break;
+	/* i.e. -1 */
+	default:
+		/* XXX: ESTALE?  This is what is done if it is not new. */
+		orangefs_make_bad_inode(inode);
+		ret = -ESTALE;
+		goto out;
 	}
 
 	inode->i_uid = make_kuid(&init_user_ns, new_op->
@@ -420,7 +426,7 @@ int orangefs_inode_check_changed(struct inode *inode)
 	if (ret != 0)
 		goto out;
 
-	ret = orangefs_inode_is_stale(inode, 0,
+	ret = orangefs_inode_is_stale(inode,
 	    &new_op->downcall.resp.getattr.attributes,
 	    new_op->downcall.resp.getattr.link_target);
 out:
-- 
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