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Message-ID: <ZPrk3yIrhA8usrgX@infradead.org>
Date:   Fri, 8 Sep 2023 02:09:51 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     "Matthew Wilcox (Oracle)" <willy@...radead.org>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>, Will Deacon <will@...nel.org>,
        Waiman Long <longman@...hat.com>, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, Chandan Babu R <chandan.babu@...cle.com>,
        "Darrick J . Wong" <djwong@...nel.org>, linux-xfs@...r.kernel.org
Subject: Re: [PATCH 3/5] xfs: Use rwsem_is_write_locked()

On Thu, Sep 07, 2023 at 06:47:03PM +0100, Matthew Wilcox (Oracle) wrote:
> This avoids using the mr_writer field to check the XFS ILOCK is held
> for write.  It also improves the checking we do when lockdep is disabled.

Hmm, is there any reason to keep the lockdep-based version of
__xfs_rwsem_islocked around now at all?

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