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Date: Fri, 16 Nov 2018 14:49:36 +0100
From: Christoph Hellwig <hch@lst.de>
To: Ming Lei <ming.lei@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>, linux-block@vger.kernel.org,
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Subject: Re: [PATCH V10 13/19] iomap & xfs: only account for new added page
Message-ID: <20181116134936.GJ3165@lst.de>
References: <20181115085306.9910-1-ming.lei@redhat.com> <20181115085306.9910-14-ming.lei@redhat.com>
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I'd much rather have __bio_try_merge_page only do merges in
the same page, and have a new __bio_try_merge_segment that does
multi-page merges.  This will keep the accounting a lot simpler.