Re: [PATCH RFC 5/7] md/raid5: convert to use bio_submit_split()

[Yu Kuai <yukuai1@huaweicloud.com>]

Hi,

在 2025/08/25 19:00, Christoph Hellwig 写道:
> On Mon, Aug 25, 2025 at 05:36:58PM +0800, Yu Kuai wrote:
>> +		raid_bio = bio_submit_split(raid_bio, sectors,
>> +					    &conf->bio_split);
>> +		if (!raid_bio)
>> +			return NULL;
>> +
>> +		raid_bio->bi_opf &= ~REQ_NOMERGE;
> 
> It almost feels as if md wants a little helper that wraps
> bio_submit_split and also clears REQ_NOMERGE?
> 

Yes.

And with the respect bio_submit_split() set this flag and then we clear
it, will it make more sense to set this flag after bio_submit_split()
from block layer?

Thanks,
Kuai

> .
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