[Bugs] [Bug 1327035] fuse: Avoid redundant lookup on "." and ".." as part of every readdirp

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1327035

nchilaka <nchilaka at redhat.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ON_QA                       |VERIFIED



--- Comment #5 from nchilaka <nchilaka at redhat.com> ---
Discussed with Dev. and found that there  is no clear  way of validating this
bug as this is a code change with no direct functional impact.
Hence moving it to verified
However, following was what i did test:
tried to check the lookups using profiling and didn't find difference b/w fuse
client versions of 3.7.9-1(before fix) and 3.7.9-3(after fix) (the server
versions for both were common 3.7.9-3) However dev. mentioned that this may not
be right test

Did a lot of IO and checked statedump before clearing client cache and after
clearing client cache( searched for IO the hot-count in inode table ) didnt see
much difference b/w the different client version

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