Re: [PATCH RT] fs: jbd2: pull your plug when waiting for space

[Theodore Ts'o]

On Fri, Feb 21, 2014 at 02:54:12PM +0100, Mike Galbraith wrote:
> 
> ext3: dbench1 queues a buffer, blocks on journal mutex, it's plug is not
> pulled.  dbench2 mutex owner is waiting for kjournald, who is waiting for
> the buffer queued by dbench1.  Game over.

Where is in ext3/4 are we calling some function which could end up
blocking on kjournald while we have the I/O queue plugged?  That
sounds suspicious and potentially wrong.

							- Ted
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