NFS: More page cache revalidation fixups

Whenever the directory changes, we want to make sure that we always
invalidate its page cache. Fix up update_changeattr() and
nfs_mark_for_revalidate() so that they do so.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

fs/nfs/nfs4proc.c

@@ -185,15 +185,15 @@ static void renew_lease(const struct nfs_server *server, unsigned long timestamp
 	spin_unlock(&clp->cl_lock);
 }
 
-static void update_changeattr(struct inode *inode, struct nfs4_change_info *cinfo)
+static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo)
 {
-	struct nfs_inode *nfsi = NFS_I(inode);
+	struct nfs_inode *nfsi = NFS_I(dir);
 
-	spin_lock(&inode->i_lock);
-	nfsi->cache_validity |= NFS_INO_INVALID_ATTR;
+	spin_lock(&dir->i_lock);
+	nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA;
 	if (cinfo->before == nfsi->change_attr && cinfo->atomic)
 		nfsi->change_attr = cinfo->after;
-	spin_unlock(&inode->i_lock);
+	spin_unlock(&dir->i_lock);
 }
 
 struct nfs4_opendata {

include/linux/nfs_fs.h

@@ -234,8 +234,12 @@ static inline int nfs_caches_unstable(struct inode *inode)
 
 static inline void nfs_mark_for_revalidate(struct inode *inode)
 {
+	struct nfs_inode *nfsi = NFS_I(inode);
+
 	spin_lock(&inode->i_lock);
-	NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS;
+	nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS;
+	if (S_ISDIR(inode->i_mode))
+		nfsi->cache_validity |= NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA;
 	spin_unlock(&inode->i_lock);
 }