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[ Upstream commit4ad357e39b] The "if (dio->error)" in iomap_dio_bio_iter exists to stop submitting more bios when a completion already return an error. Commitcfe057f7db("iomap_dio_actor(): fix iov_iter bugs") made it revert the iov by "copied", which is very wrong given that we've already consumed that range and submitted a bio for it. Fixes:cfe057f7db("iomap_dio_actor(): fix iov_iter bugs") Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Sasha Levin <sashal@kernel.org>