Re: [PATCH 4.4 50/92] mm: filemap: avoid unnecessary calls to lock_page when waiting for IO to complete during a read

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On Thu, May 24, 2018 at 02:02:37PM +0200, Jan Kara wrote:
> > This is in the SLES kernel for a reason, and again, it's in the section
> > that says "this should be pushed to stable".  So if it's good enough for
> > the SLES kernel, why isn't it good enough for all users of this kernel
> > tree?
> 
> Heh, fair enough. I guess Mel in the end didn't find patches worthy enough
> to be pushed to stable tree. But at least now I know they are well tested
> with 4.4 base so they should do no harm in the stable tree so my stance is
> closer to neutral.
> 

Early on, I backported a number of performance patches to -stable with the
view to having a good baseline to compare a new mainline release with.
However, after a while some of them required unrelated backports that
would be excessive for -stable. While I could have continued backporting
some patches, I stopped as the time required to run all of the performance
tests is excessive and I was already tracking too many kernels.

-- 
Mel Gorman
SUSE Labs



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