ovl: disambiguate ovl_encode_fh()

Rename ovl_encode_fh() to ovl_encode_real_fh() to differentiate from the
exportfs function ovl_encode_inode_fh() and change the latter to
ovl_encode_fh() to match the exportfs method name.

Rename ovl_decode_fh() to ovl_decode_real_fh() for consistency.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

fs/overlayfs/copy_up.c

@@ -232,7 +232,7 @@ int ovl_set_attr(struct dentry *upperdentry, struct kstat *stat)
 	return err;
 }
 
-struct ovl_fh *ovl_encode_fh(struct dentry *real, bool is_upper)
+struct ovl_fh *ovl_encode_real_fh(struct dentry *real, bool is_upper)
 {
 	struct ovl_fh *fh;
 	int fh_type, fh_len, dwords;
@@ -300,7 +300,7 @@ int ovl_set_origin(struct dentry *dentry, struct dentry *lower,
 	 * up and a pure upper inode.
 	 */
 	if (ovl_can_decode_fh(lower->d_sb)) {
-		fh = ovl_encode_fh(lower, false);
+		fh = ovl_encode_real_fh(lower, false);
 		if (IS_ERR(fh))
 			return PTR_ERR(fh);
 	}
@@ -321,7 +321,7 @@ static int ovl_set_upper_fh(struct dentry *upper, struct dentry *index)
 	const struct ovl_fh *fh;
 	int err;
 
-	fh = ovl_encode_fh(upper, true);
+	fh = ovl_encode_real_fh(upper, true);
 	if (IS_ERR(fh))
 		return PTR_ERR(fh);
 

fs/overlayfs/export.c

@@ -228,8 +228,8 @@ static int ovl_d_to_fh(struct dentry *dentry, char *buf, int buflen)
 		goto fail;
 
 	/* Encode an upper or lower file handle */
-	fh = ovl_encode_fh(enc_lower ? ovl_dentry_lower(dentry) :
-				       ovl_dentry_upper(dentry), !enc_lower);
+	fh = ovl_encode_real_fh(enc_lower ? ovl_dentry_lower(dentry) :
+				ovl_dentry_upper(dentry), !enc_lower);
 	err = PTR_ERR(fh);
 	if (IS_ERR(fh))
 		goto fail;
@@ -267,8 +267,8 @@ static int ovl_dentry_to_fh(struct dentry *dentry, u32 *fid, int *max_len)
 	return OVL_FILEID;
 }
 
-static int ovl_encode_inode_fh(struct inode *inode, u32 *fid, int *max_len,
-			       struct inode *parent)
+static int ovl_encode_fh(struct inode *inode, u32 *fid, int *max_len,
+			 struct inode *parent)
 {
 	struct dentry *dentry;
 	int type;
@@ -685,7 +685,7 @@ static struct dentry *ovl_upper_fh_to_d(struct super_block *sb,
 	if (!ofs->upper_mnt)
 		return ERR_PTR(-EACCES);
 
-	upper = ovl_decode_fh(fh, ofs->upper_mnt);
+	upper = ovl_decode_real_fh(fh, ofs->upper_mnt);
 	if (IS_ERR_OR_NULL(upper))
 		return upper;
 
@@ -829,7 +829,7 @@ static struct dentry *ovl_get_parent(struct dentry *dentry)
 }
 
 const struct export_operations ovl_export_operations = {
-	.encode_fh	= ovl_encode_inode_fh,
+	.encode_fh	= ovl_encode_fh,
 	.fh_to_dentry	= ovl_fh_to_dentry,
 	.fh_to_parent	= ovl_fh_to_parent,
 	.get_name	= ovl_get_name,

fs/overlayfs/namei.c

@@ -180,7 +180,7 @@ invalid:
 	goto out;
 }
 
-struct dentry *ovl_decode_fh(struct ovl_fh *fh, struct vfsmount *mnt)
+struct dentry *ovl_decode_real_fh(struct ovl_fh *fh, struct vfsmount *mnt)
 {
 	struct dentry *real;
 	int bytes;
@@ -326,7 +326,7 @@ int ovl_check_origin_fh(struct ovl_fs *ofs, struct ovl_fh *fh,
 	int i;
 
 	for (i = 0; i < ofs->numlower; i++) {
-		origin = ovl_decode_fh(fh, ofs->lower_layers[i].mnt);
+		origin = ovl_decode_real_fh(fh, ofs->lower_layers[i].mnt);
 		if (origin)
 			break;
 	}
@@ -424,7 +424,7 @@ int ovl_verify_set_fh(struct dentry *dentry, const char *name,
 	struct ovl_fh *fh;
 	int err;
 
-	fh = ovl_encode_fh(real, is_upper);
+	fh = ovl_encode_real_fh(real, is_upper);
 	err = PTR_ERR(fh);
 	if (IS_ERR(fh))
 		goto fail;
@@ -460,7 +460,7 @@ struct dentry *ovl_index_upper(struct ovl_fs *ofs, struct dentry *index)
 	if (IS_ERR_OR_NULL(fh))
 		return ERR_CAST(fh);
 
-	upper = ovl_decode_fh(fh, ofs->upper_mnt);
+	upper = ovl_decode_real_fh(fh, ofs->upper_mnt);
 	kfree(fh);
 
 	if (IS_ERR_OR_NULL(upper))
@@ -628,7 +628,7 @@ int ovl_get_index_name(struct dentry *origin, struct qstr *name)
 	struct ovl_fh *fh;
 	int err;
 
-	fh = ovl_encode_fh(origin, false);
+	fh = ovl_encode_real_fh(origin, false);
 	if (IS_ERR(fh))
 		return PTR_ERR(fh);
 

fs/overlayfs/overlayfs.h

@@ -266,7 +266,7 @@ static inline bool ovl_is_impuredir(struct dentry *dentry)
 
 /* namei.c */
 int ovl_check_fh_len(struct ovl_fh *fh, int fh_len);
-struct dentry *ovl_decode_fh(struct ovl_fh *fh, struct vfsmount *mnt);
+struct dentry *ovl_decode_real_fh(struct ovl_fh *fh, struct vfsmount *mnt);
 int ovl_check_origin_fh(struct ovl_fs *ofs, struct ovl_fh *fh,
 			struct dentry *upperdentry, struct ovl_path **stackp);
 int ovl_verify_set_fh(struct dentry *dentry, const char *name,
@@ -361,7 +361,7 @@ int ovl_copy_up(struct dentry *dentry);
 int ovl_copy_up_flags(struct dentry *dentry, int flags);
 int ovl_copy_xattr(struct dentry *old, struct dentry *new);
 int ovl_set_attr(struct dentry *upper, struct kstat *stat);
-struct ovl_fh *ovl_encode_fh(struct dentry *real, bool is_upper);
+struct ovl_fh *ovl_encode_real_fh(struct dentry *real, bool is_upper);
 int ovl_set_origin(struct dentry *dentry, struct dentry *lower,
 		   struct dentry *upper);