From: Trond Myklebust <trond.myklebust@primarydata.com>
Date: Fri, 17 Jun 2016 20:48:27 +0000 (-0400)
Subject: NFS: Don't let readdirplus revalidate an inode that was marked as stale
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=d8fdb47fae5febc02e62da121f85625244b98b2e;p=linux-beck.git

NFS: Don't let readdirplus revalidate an inode that was marked as stale

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

diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index aaf7bd0cbae2..a924d66b5608 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -424,12 +424,17 @@ static int xdr_decode(nfs_readdir_descriptor_t *desc,
 static
 int nfs_same_file(struct dentry *dentry, struct nfs_entry *entry)
 {
+	struct inode *inode;
 	struct nfs_inode *nfsi;
 
 	if (d_really_is_negative(dentry))
 		return 0;
 
-	nfsi = NFS_I(d_inode(dentry));
+	inode = d_inode(dentry);
+	if (is_bad_inode(inode) || NFS_STALE(inode))
+		return 0;
+
+	nfsi = NFS_I(inode);
 	if (entry->fattr->fileid == nfsi->fileid)
 		return 1;
 	if (nfs_compare_fh(entry->fh, &nfsi->fh) == 0)