Re: Any bio_clone_slow() implementation which doesn't share bi_io_vec?
From: Christoph Hellwig <hch@infradead.org>
Date: 2021-11-23 08:13:53
Also in:
dm-devel, linux-fsdevel
On Tue, Nov 23, 2021 at 04:10:35PM +0800, Qu Wenruo wrote:
Without bio_chain() sounds pretty good, as we can still utilize bi_end_io and bi_private. But this also means, we're now responsible not to release the source bio since it has the real bi_io_vec.
Just call bio_inc_remaining before submitting the cloned bio, and then call bio_endio on the root bio every time a clone completes.