> 2025年1月2日 19:28，Yu Kuai <yukuai1@xxxxxxxxxxxxxxx> 写道：
>
> From: Yu Kuai <yukuai3@xxxxxxxxxx>
>
> THe md-linear is removed by commit 849d18e27be9 ("md: Remove deprecated
> CONFIG_MD_LINEAR") because it has been marked as deprecated for a long
> time.
>
> However, md-linear is used widely for underlying disks with different size,
> sadly we didn't know this until now, and it's true useful to create
> partitions and assemble multiple raid and then append one to the other.
>
> People have to use dm-linear in this case now, however, they will prefer
> to minimize the number of involved modules.
>
> Signed-off-by: Yu Kuai <yukuai3@xxxxxxxxxx>
Acked-by: Coly Li <colyli@xxxxxxxxxx>
I am fully supportive to bring md-linear back. There are still many people/company/products using md-linear, just like the discussion in another thread.
Thanks for doing this.
Coly Li
> ---
> drivers/md/Kconfig | 13 ++
> drivers/md/Makefile | 2 +
> drivers/md/md-autodetect.c | 8 +-
> drivers/md/md-linear.c | 354 +++++++++++++++++++++++++++++++++
> drivers/md/md.c | 2 +-
> include/uapi/linux/raid/md_p.h | 2 +-
> include/uapi/linux/raid/md_u.h | 2 +
> 7 files changed, 379 insertions(+), 4 deletions(-)
> create mode 100644 drivers/md/md-linear.c
>
[snipped]
> 2.39.2
>
