Re: RFT: updatedb "morning after" problem [was: Re: -mm merge plans for 2.6.23]

[Al Viro]

On Thu, Jul 26, 2007 at 02:23:30PM +0200, Andi Kleen wrote:
> That would just save reading the directories. Not sure
> it helps that much. Much better would be actually if it didn't stat the 
> individual files (and force their dentries/inodes in). I bet it does that to 
> find out if they are directories or not. But in a modern system it could just 
> check the type in the dirent on file systems that support 
> that and not do a stat. Then you would get much less dentries/inodes.
 
FWIW, find(1) does *not* stat non-directories (and neither would this
approach).  So it's just dentries for directories and you can't realistically
skip those.  OK, you could - if you had banned cross-directory rename
for directories and propagated "dirty since last look" towards root (note
that it would be a boolean, not a timestamp).  Then we could skip unchanged
subtrees completely...
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/