Re: Used space in bytes

Re: Used space in bytes

[Petr Vandrovec]

On  9 Nov 00 at 19:18, Jan Kara wrote:
> used (I tried to contact Ulrich Drepper <drepper@redhat.com> who should
> be right person to ask about such things (at least I was said so) but go
> no answer...). Does anybody have any better solution?
>   I know about two others - really ugly ones:
>    1) fs specific ioctl()
>    2) compute needed number of bytes from st_size and st_blocks, which is
>       currently possible but won't be in future

If I may, please do not add it into stat/stat64 structure. On Netware, 
computing really used space can take eons because of it has to read 
allocation tables to memory to find size. It is usually about 500% 
slower than retrieving all other file informations.

Or at least add some parameter to stat so that filesystem can say which
informations are important for you. But I think that ioctl is less
ugly. But that's just my opinion and I know that others here are strongly
against ioctl.
                                           Best regards,
                                                        Petr Vandrovec
                                                        vandrove@vc.cvut.cz

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Re: Used space in bytes

[Jan Kara]

  Hello.

> On  9 Nov 00 at 19:18, Jan Kara wrote:
> > used (I tried to contact Ulrich Drepper <drepper@redhat.com> who should
> > be right person to ask about such things (at least I was said so) but go
> > no answer...). Does anybody have any better solution?
> >   I know about two others - really ugly ones:
> >    1) fs specific ioctl()
> >    2) compute needed number of bytes from st_size and st_blocks, which is
> >       currently possible but won't be in future
> 
> If I may, please do not add it into stat/stat64 structure. On Netware, 
> computing really used space can take eons because of it has to read 
> allocation tables to memory to find size. It is usually about 500% 
> slower than retrieving all other file informations.
  And how do you fill in st_blocks field?

							Honza

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[Off topic] UK patent office wants comments on software patent laws.

[Lars Gaarden]

Off topic for lkml, I know. But since software
patents could have a huge impact on open source,
UK residents on this list should be aware that
the UK patent office is currently asking for
comments on changes to the patent law regarding
software and business patents.

>From their page:

"Should Patents be Granted for Computer Software or
Ways of Doing Business?"

"We want to know what you think about this so that
Government policy is evidence-based and relevant to
business, commerce, and consumers - in other words
to you. So, whether you are in the software industry,
financial services, are a software user, a consumer,
or are otherwise interested, we want to hear from you."

http://www.patent.gov.uk/snews/notices/softcons.html
news://discuss.patent.gov.uk/patentoffice.softpat

-- 
LarsG
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