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From: Christoph Hellwig <hch@lst.de>
Subject: same page merging leak fix v4
Date: Mon, 17 Jun 2019 11:14:10 +0200
Message-Id: <20190617091412.15923-1-hch@lst.de>
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To: Jens Axboe <axboe@kernel.dk>, Ming Lei <ming.lei@redhat.com>
Cc: David Gibson <david@gibson.dropbear.id.au>, "Darrick J. Wong" <darrick.wong@oracle.com>, linux-block@vger.kernel.org, linux-xfs@vger.kernel.org

Hi Jens, hi Ming,

this is the tested and split version of what I think is the better
fix for the get_user_pages page leak, as it leaves the intelligence
in the callers instead of in bio_try_to_merge_page.

Changes since v2:
 - pass a proper same_page variable from the passthrough path

Changes since v1:
 - drop patches not required for 5.2
 - added Reviewed-by tags