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Date: Sat, 2 Mar 2013 18:15:06 -0500
From: "Theodore Ts'o" <tytso@mit.edu>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Dave Jones <davej@redhat.com>,
        Markus Trippelsdorf <markus@trippelsdorf.de>,
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Subject: Re: [GIT PULL URGENT] ext4 regression fix for 3.9
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On Sat, Mar 02, 2013 at 11:54:37AM -0800, Linus Torvalds wrote:
> 
> This needs to be fixed or reverted. I traced back some user
> interaction problems to this same issue. It literally gets so bad that
> the whole system is choppy, and a profile shows that a lot of time is
> being spent in the spin-lock protecting these data structures. Called
> from ext4_es_reclaim_extents_count, ext4_es_lru_add and
> ext4_es_shrink.

I'm doing final testing on a pull request that will fix these
problems.  I'll send it to you later this evening.

	   	     	       	     - Ted