On Thu, Mar 08, 2018 at 04:17:19PM +0800, Jiufei Xue wrote:

Hi Christoph,

On 2018/3/8 下午3:46, Christoph Hellwig wrote:

quoted

bio_check_eod() should check partiton size not the whole disk if
bio->bi_partno is non-zero.

I think the check should be done twice if the bio->bi_partno is not zero,
one for the partition, and another for the whole disk after remap which
is add in the commit 5ddfe9691c91
("md: check bio address after mapping through partitions").

I disagree.  See my other mail - if it fits inside the partition the
partition rescan code already made sure it also fits inside the device.