Re: [PATCH] inotify to minimize stat() calls

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On Thu, Apr 25, 2013 at 4:20 PM, Duy Nguyen <pclouds@xxxxxxxxx> wrote:
> On Fri, Apr 26, 2013 at 2:44 AM, Robert Zeh <robert.allan.zeh@xxxxxxxxx> wrote:
>>> Can you just replace lstat/stat with cached_lstat/stat inside
>>> git-compat-util.h and not touch all files at once? I think you may
>>> need to deal with paths outside working directory. But because you're
>>> using lookup table, that should be no problem.
>>
>> That's a good idea; but there are a few places where you want to call
>> the uncached stat because calling the cache leads to recursion or
>> you bump into things that haven't been setup yet.  Any ideas how to
>> handle that?
>
> On second thought, no my idea was stupid. We only need to optimize
> lstat for certain cases and naming cached_lstat is much clearer. I
> suspect read-cache.c and maybe dir.c and unpack-trees.c are the only
> places that need cached_lstat. Other places should not issue many
> lstats and we don't need to touch them.

ok.  The only reason I did it for all of them was the it was a simple search
and replace, and I didn't know how often lstat was called from various
locations.
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