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Date: Fri, 15 Apr 2016 11:08:20 -0700
From: Christoph Hellwig <hch@infradead.org>
Subject: Re: [PATCH] xfs: buffer ->bi_end_io function requires irq-safe lock
Message-ID: <20160415180820.GA20260@infradead.org>
References: <1460736519-39428-1-git-send-email-bfoster@redhat.com>
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To: Brian Foster <bfoster@redhat.com>
Cc: xfs@oss.sgi.com

How about just doing a cmpxchg on bi_error?

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