block: Add a new helper to attempt to merge a bio
There are lots of duplicated code when trying to merge a bio from plug list and sw queue, we can introduce a new helper to attempt to merge a bio, which can simplify the blk_bio_list_merge() and blk_attempt_plug_merge(). Reviewed-by:Christoph Hellwig <hch@lst.de> Signed-off-by:
Baolin Wang <baolin.wang@linux.alibaba.com> Signed-off-by:
Jens Axboe <axboe@kernel.dk>
parent
bdc6a287
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