On Thu, Jul 21, 2011 at 12:48:03PM -0700, Linus Torvalds wrote:
> Oh, this didn't get marked for stable.
>
> It's commit 59430262401b, "vfs: fix race in rcu lookup of pruned
> dentry", and it applies to 39 too.
>
> It turns out 2.6.38 got it right. The bug was introduced by
> 62a7375e5d77 ("vfs - check non-mountpoint dentry might block in
> __follow_mount_rcu()").
>
> Al, what about your other d_lock fixes etc? Are they worth the pain of
> back-porting?
Yes; shouldn't have to go earlier than Nick's pile from January, but they
are needed for .38, AFAICS. cifs fix definitely needs backporting as
well...
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