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SubjectRe: ext4 locks under 2.6.28.3..6
On Fri, Feb 20, 2009 at 10:34:43AM +0000, Luciano Miguel Ferreira Rocha wrote:
>
> I've experienced intermittent locks on my ext4 filesystems under kernel
> 2.6.28.3 till 2.6.28.6.

Are you still seeing the problem now that you're using 2.6.28.6? It
looks to me to be another case of bug

http://bugzilla.kernel.org/show_bug.cgi?id=12579
http://bugzilla.kernel.org/show_bug.cgi?id=12610

As I commented in bugid 12610:

>This fix for this has landed in mainline post 2.6.29-rc5, as commit
>2acf2c. The deadlock is technically not a regression but it was made
>*much* more likely to show up because of commit 31a1266: ("mm:
>write_cache_pages cyclic fix, which show up in 2.6.28.1").
>
>Commit 3a4c68 in mainline backs up the change made in 31a1266, so you
>probably won't see this much after 2.6.28.6 (when 3a4c68 was
>backported to 2.6.28.y), but we should get commit 2acf2c pushed to
>2.6.28.x and 2.6.27.y to completely solve the deadlock problem.

- Ted


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