On Mon, Apr 11, 2022 at 01:33:58PM -0400, Mike Snitzer wrote:
> When bio_{alloc,init}_clone are passed a bdev, bio_init() will call
> bio_associate_blkg() so the __bio_clone() work to initialize blkcg
> isn't needed.
No, unfortunately it isn't as simple as that. There are bios that do
not use the default cgroup and thus blkg, e.g. those that come from
cgroup writeback.
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