1 files changed, 36 insertions, 37 deletions

diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 5f1af4cd1a33..cb22a9f9ae7e 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -455,14 +455,17 @@ bool nfs_use_readdirplus(struct inode *dir, struct dir_context *ctx)
 }
 
 /*
- * This function is called by the lookup code to request the use of
- * readdirplus to accelerate any future lookups in the same
+ * This function is called by the lookup and getattr code to request the
+ * use of readdirplus to accelerate any future lookups in the same
  * directory.
  */
-static
 void nfs_advise_use_readdirplus(struct inode *dir)
 {
-	set_bit(NFS_INO_ADVISE_RDPLUS, &NFS_I(dir)->flags);
+	struct nfs_inode *nfsi = NFS_I(dir);
+
+	if (nfs_server_capable(dir, NFS_CAP_READDIRPLUS) &&
+	    !list_empty(&nfsi->open_files))
+		set_bit(NFS_INO_ADVISE_RDPLUS, &nfsi->flags);
 }
 
 /*
@@ -475,9 +478,12 @@ void nfs_advise_use_readdirplus(struct inode *dir)
  */
 void nfs_force_use_readdirplus(struct inode *dir)
 {
-	if (!list_empty(&NFS_I(dir)->open_files)) {
-		nfs_advise_use_readdirplus(dir);
-		nfs_zap_mapping(dir, dir->i_mapping);
+	struct nfs_inode *nfsi = NFS_I(dir);
+
+	if (nfs_server_capable(dir, NFS_CAP_READDIRPLUS) &&
+	    !list_empty(&nfsi->open_files)) {
+		set_bit(NFS_INO_ADVISE_RDPLUS, &nfsi->flags);
+		invalidate_mapping_pages(dir->i_mapping, 0, -1);
 	}
 }
 
@@ -886,17 +892,6 @@ int uncached_readdir(nfs_readdir_descriptor_t *desc)
 	goto out;
 }
 
-static bool nfs_dir_mapping_need_revalidate(struct inode *dir)
-{
-	struct nfs_inode *nfsi = NFS_I(dir);
-
-	if (nfs_attribute_cache_expired(dir))
-		return true;
-	if (nfsi->cache_validity & NFS_INO_INVALID_DATA)
-		return true;
-	return false;
-}
-
 /* The file offset position represents the dirent entry number.  A
    last cookie cache takes care of the common case of reading the
    whole directory.
@@ -928,7 +923,7 @@ static int nfs_readdir(struct file *file, struct dir_context *ctx)
 	desc->decode = NFS_PROTO(inode)->decode_dirent;
 	desc->plus = nfs_use_readdirplus(inode, ctx) ? 1 : 0;
 
-	if (ctx->pos == 0 || nfs_dir_mapping_need_revalidate(inode))
+	if (ctx->pos == 0 || nfs_attribute_cache_expired(inode))
 		res = nfs_revalidate_mapping(inode, file->f_mapping);
 	if (res < 0)
 		goto out;
@@ -1035,8 +1030,6 @@ EXPORT_SYMBOL_GPL(nfs_force_lookup_revalidate);
 static int nfs_check_verifier(struct inode *dir, struct dentry *dentry,
 			      int rcu_walk)
 {
-	int ret;
-
 	if (IS_ROOT(dentry))
 		return 1;
 	if (NFS_SERVER(dir)->flags & NFS_MOUNT_LOOKUP_CACHE_NONE)
@@ -1044,12 +1037,12 @@ static int nfs_check_verifier(struct inode *dir, struct dentry *dentry,
 	if (!nfs_verify_change_attribute(dir, dentry->d_time))
 		return 0;
 	/* Revalidate nfsi->cache_change_attribute before we declare a match */
-	if (rcu_walk)
-		ret = nfs_revalidate_inode_rcu(NFS_SERVER(dir), dir);
-	else
-		ret = nfs_revalidate_inode(NFS_SERVER(dir), dir);
-	if (ret < 0)
-		return 0;
+	if (nfs_mapping_need_revalidate_inode(dir)) {
+		if (rcu_walk)
+			return 0;
+		if (__nfs_revalidate_inode(NFS_SERVER(dir), dir) < 0)
+			return 0;
+	}
 	if (!nfs_verify_change_attribute(dir, dentry->d_time))
 		return 0;
 	return 1;
@@ -1161,7 +1154,7 @@ static int nfs_lookup_revalidate(struct dentry *dentry, unsigned int flags)
 				return -ECHILD;
 			goto out_bad;
 		}
-		goto out_valid_noent;
+		goto out_valid;
 	}
 
 	if (is_bad_inode(inode)) {
@@ -1184,6 +1177,7 @@ static int nfs_lookup_revalidate(struct dentry *dentry, unsigned int flags)
 				return -ECHILD;
 			goto out_zap_parent;
 		}
+		nfs_advise_use_readdirplus(dir);
 		goto out_valid;
 	}
 
@@ -1219,12 +1213,12 @@ static int nfs_lookup_revalidate(struct dentry *dentry, unsigned int flags)
 	nfs_free_fhandle(fhandle);
 	nfs4_label_free(label);
 
+	/* set a readdirplus hint that we had a cache miss */
+	nfs_force_use_readdirplus(dir);
+
 out_set_verifier:
 	nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
  out_valid:
-	/* Success: notify readdir to use READDIRPLUS */
-	nfs_advise_use_readdirplus(dir);
- out_valid_noent:
 	if (flags & LOOKUP_RCU) {
 		if (parent != ACCESS_ONCE(dentry->d_parent))
 			return -ECHILD;
@@ -1424,8 +1418,8 @@ struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, unsigned in
 	if (IS_ERR(res))
 		goto out_label;
 
-	/* Success: notify readdir to use READDIRPLUS */
-	nfs_advise_use_readdirplus(dir);
+	/* Notify readdir to use READDIRPLUS */
+	nfs_force_use_readdirplus(dir);
 
 no_entry:
 	res = d_splice_alias(inode, dentry);
@@ -1467,9 +1461,9 @@ static fmode_t flags_to_mode(int flags)
 	return res;
 }
 
-static struct nfs_open_context *create_nfs_open_context(struct dentry *dentry, int open_flags)
+static struct nfs_open_context *create_nfs_open_context(struct dentry *dentry, int open_flags, struct file *filp)
 {
-	return alloc_nfs_open_context(dentry, flags_to_mode(open_flags));
+	return alloc_nfs_open_context(dentry, flags_to_mode(open_flags), filp);
 }
 
 static int do_open(struct inode *inode, struct file *filp)
@@ -1535,8 +1529,13 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry,
 		return -ENAMETOOLONG;
 
 	if (open_flags & O_CREAT) {
+		struct nfs_server *server = NFS_SERVER(dir);
+
+		if (!(server->attr_bitmask[2] & FATTR4_WORD2_MODE_UMASK))
+			mode &= ~current_umask();
+
 		attr.ia_valid |= ATTR_MODE;
-		attr.ia_mode = mode & ~current_umask();
+		attr.ia_mode = mode;
 	}
 	if (open_flags & O_TRUNC) {
 		attr.ia_valid |= ATTR_SIZE;
@@ -1554,7 +1553,7 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry,
 			return finish_no_open(file, dentry);
 	}
 
-	ctx = create_nfs_open_context(dentry, open_flags);
+	ctx = create_nfs_open_context(dentry, open_flags, file);
 	err = PTR_ERR(ctx);
 	if (IS_ERR(ctx))
 		goto out;