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From:   Christoph Hellwig <hch@lst.de>
To:     Chris Mason <clm@fb.com>, Josef Bacik <josef@toxicpanda.com>,
        David Sterba <dsterba@suse.com>
Cc:     linux-btrfs@vger.kernel.org
Subject: fix nodatasum I/O for zone devices v2
Date:   Thu,  8 Jun 2023 14:14:09 +0200
Message-Id: <20230608121410.275766-1-hch@lst.de>
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Hi all,

my recent series to optimize the ordered_extent splitting for zoned
devices broke nodatasum I/O - this was hidden by the fact that a normal
xfstests run appears to only exercise nodatasum in combination with
dev-replace, which was also broken..

Changes since v1:
 - drop the btrfs_inode_is_nodatasum helper
 - add a new helper to just allocate a dummy ordered_sum structure
 - more comments