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Date: Tue, 29 Sep 2015 11:03:46 -0400 From: Tejun Heo <tj@...nel.org> To: Jens Axboe <axboe@...nel.dk> Cc: Akinobu Mita <akinobu.mita@...il.com>, LKML <linux-kernel@...r.kernel.org>, Ming Lei <tom.leiming@...il.com>, Christoph Hellwig <hch@....de> Subject: Re: [PATCH v4 6/7] blk-mq: fix freeze queue race Hello, On Tue, Sep 29, 2015 at 09:01:31AM -0600, Jens Axboe wrote: > I think that would be very useful, it seems sort of half-assed if the caller > side has to provide serialization for that. Yeah, the thing is init/exit are usually caller synchronized but percpu_rwsem's kill/reinit are more of mode-switching operations which can be performed concurrently during operation so I think the right thing to do here is making it synchronize itself. Will spin a patch. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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