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Date: Sun, 19 Jul 2020 02:49:54 +0100 From: Al Viro <viro@...iv.linux.org.uk> To: Sebastian Andrzej Siewior <bigeasy@...utronix.de> Cc: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, John Ogness <john.ogness@...utronix.de>, Thomas Gleixner <tglx@...utronix.de>, Peter Zijlstra <peterz@...radead.org> Subject: Re: [RFC PATCH v2] fs/namespace: use percpu_rw_semaphore for writer holding On Thu, Jul 02, 2020 at 05:46:46PM +0200, Sebastian Andrzej Siewior wrote: > The MNT_WRITE_HOLD flag is used to manually implement a rwsem. Could you show me where does it currently sleep? Your version does, unless I'm misreading it...
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