Re: [PATCH RFC v4 2/3] iomap: use BIO_COMPLETE_IN_TASK for dropbehind writeback

[Christoph Hellwig]

On Fri, Mar 27, 2026 at 02:24:02PM +0800, Gao Xiang wrote:
>  - use EROFS directly, in that case, we still need process
>    contexts to decompress, but due to Android latency
>    requirements, they really need per-cpu RT threads instead,
>    otherwise it will cause serious regression too; but I'm not
>    sure that case can be replaced by this work since workqueues
>    don't support RT threads and I guess generic block layer
>    won't be bothered with that too.

All of the I/O completions should be latency sensitive.  So I think it
would be great if you could help out here with the requirements and
implementation.