Re: [PATCH v3] exfat: integrates dir-entry getting and validation

[Tetsuhiro Kohada]

Thank you for your reply.

> > @@ -171,7 +174,9 @@ struct exfat_entry_set_cache {
> >   	unsigned int start_off;
> >   	int num_bh;
> >   	struct buffer_head *bh[DIR_CACHE_SIZE];
> > -	unsigned int num_entries;
> > +	int num_entries;
> > +	struct exfat_de_file *de_file;
> > +	struct exfat_de_stream *de_stream;
> I prefer to assign validated entries to **de and use it using enum value.
> 	struct exfat_dentry **de;

I've tried several implementations that add a struct exfat_dentry type.(*de0 & *de1;  *de[2]; etc...)
The problem with the struct exfat_dentry type is that it is too flexible for type.
This means weak typing.
Therefore, when using them,
	de[XXX_FILE]->dentry.file.zzz ...
It is necessary to re-specify the type. (against the DRY principle)
Strong typing prevents use with wrong type, at compiling.

I think the approach of using de_file/de_stream could be strongly typed.
I don't think we need excessive flexibility.


BR
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Tetsuhiro Kohada <kohada.t2@xxxxxxxxx>