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FromAndreas Dilger <>
DateMon, 28 Oct 2002 10:10:10 -0700
SubjectRe: New nanosecond stat patch for 2.5.44
On Oct 27, 2002  20:16 -0300, Horst von Brand wrote:
> Andreas Dilger <adilger@clusterfs.com> said:
> > 1) It would be good if it were possible to select this with a config
> >    option (I don't care which way the default goes), so that people who
> >    don't need/care about the increased resolution don't need the extra
> >    space in their inodes and minor extra overhead.  To make this a lot
> >    easier to code, having something akin to the inode_update_time()
> >    which does all of the i_[acm]time updates as appropriate.
> 
> Please don't. Do not create incompatible versions of the same filesystem
> just because they were written on kernels compiled with different
> configurations. Superblock flags might be OK, but what is the point then?
> Better mount flags (mount with/without finegrained timestamps)?

I don't say anything about creating incompatible versions of the same
filesystem.  Configuring out nsec timestamps is no different than what
we have today.  Many filesystems do not support nsec timestamps anyways.

I just see this as one of many hundreds of "tiny" features that are
added to Linux that could easily be made a config option when they
are first added, but all just end up adding a tiny bit of bloat for
people that don't need it.

Cheers, Andreas
--
Andreas Dilger
http://www-mddsp.enel.ucalgary.ca/People/adilger/
http://sourceforge.net/projects/ext2resize/

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