Re: [PATCH] blk-cgroup: Call cgroup_path only under cgroup lock

[Tejun Heo]

Hello, Sasha.

On Mon, Mar 12, 2012 at 04:01:18PM -0400, Sasha Levin wrote:
> Since we can't keep rcu read lock during blkg_alloc(), we currently
> call cgroup_path() without any locks at all.
> 
> This patch adds cgroup locking before calling cgroup_path.
> 
> This also fixes a lockdep warning on boot.
> 
> Signed-off-by: Sasha Levin <levinsasha928@xxxxxxxxx>

Which branch is this against?  There's already pending stat update
patch from Vivek which fix this problem along with the percpu
allocation problem.

Thanks.

-- 
tejun
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