On Thu, Feb 13, 2025 at 12:30:29AM -0800, Christoph Hellwig wrote:

On Thu, Feb 13, 2025 at 04:02:46PM +0800, Ming Lei wrote:

quoted

The problem[1] is that this kind of mmc card fails to be recognized as
block disk. Block layer io split code can handle this case actually.

When we still had bio_add_pc_page it would break the assumption that
you could always add a full page.  With that gone and everything going
through the split machinery we might be fine now, but backporting it
to 6.13 and earlier will cause breakage.

 
Yes, I will mention the following two are depended for backporting in
commit log:

02ee5d69e3ba block: remove blk_rq_bio_prep
6aeb4f836480 block: remove bio_add_pc_page

Thanks, 
Ming