Re: [GIT PULL URGENT] ext4 regression fix for 3.9

From: Theodore Ts'o
Date: Thu Feb 28 2013 - 23:01:00 EST

On Thu, Feb 28, 2013 at 10:30:05PM -0500, Dave Jones wrote:
> This has fixed the problem I reported, but I notice now that my
> desktop is really sluggish. perf top shows it's almost constantly
> spinning in ext4_es_reclaim_extents_count
> Any ideas ?

ext4_es_reclaim_extents_count() is getting called out of the slab
shrinker. It's getting called too often when there is significant
memory pressure. We can optimize this so we're not calculating it all
the time.

- Ted
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