linux-kernel - Re: Real deadlock being suppressed in sbitmap

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Message-ID: <20190114232555.5b3b8a33@vmware.local.home>
Date:   Mon, 14 Jan 2019 23:25:55 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Ming Lei <ming.lei@...hat.com>
Cc:     Jens Axboe <axboe@...nel.dk>, LKML <linux-kernel@...r.kernel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>,
        Clark Williams <williams@...hat.com>,
        Bart Van Assche <bvanassche@....org>
Subject: Re: Real deadlock being suppressed in sbitmap

On Tue, 15 Jan 2019 12:14:27 +0800
Ming Lei <ming.lei@...hat.com> wrote:

> As I mentioned, it should be fine given it is triggered only after one word
> is run out of.
> 
> Follows the lockdep warning on the latest linus tree:

Thanks for following up on this. Yes, this requires the irqsave then.

-- Steve