On Tue, Oct 10, 2006 at 04:13:52PM -0700, Chandra Seetharaman wrote:
> On Tue, 2006-10-10 at 14:58 -0700, Joel Becker wrote:
> > Well, they now have to learn seq_file. They now get to assume
>
> If they are simple users, they don't have to "learn" seq_file semantics,
> they would just replace their sprintf's with seq_printfs (as my changes
> in OCFS2 show).
The sed(1) is trivial sure. seq_file isn't terribly complex.
It's less about mere code knowledge and more about intention. Really,
it's how people understand configfs will deal with their attributes.
> "char *" can also be used to spew out large amount of data (ok, maybe up
> to PAGESIZE in configfs's case :). My point is that changing char * to
> seq_file doesn't necessarily "introduce" the issue (of spewing large
> amounts of data).
If I see a seq_file, I assume there are multiple things to
iterate over. Don't you?
> This issue is moot, unless you have intentions of changing the user
> interface of configfs to be anything other than a file system, isn't
> it ?
It could be today, without much trouble. The entire point is to
prevent client modules from implementing a filesystem or any filesystem
semantics. They implement an item hierarchy with attributes. The
attributes are read-write with ->show() and ->set(). The filesystem
should be invisible to the client.
> Now we are in need of *large* reads. We can add this feature and let it
> evolve to the next level later when somebody needs to *set* a large
> attribute.
I don't want some set of ad-hoc rules based on legacy broken
ideas. "Well, you can do this, or this, or this, or even this, and all
sort of work, but it's a mess" is not a good thing.
Joel
--
Life's Little Instruction Book #20
"Be forgiving of yourself and others."
Joel Becker
Principal Software Developer
Oracle
E-mail: [EMAIL PROTECTED]
Phone: (650) 506-8127
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