Re: [PATCH AUTOSEL 6.12 16/19] md/raid1: Handle bio_split() errors

[John Garry <john.g.garry@oracle.com>]

On 24/11/2024 12:38, Sasha Levin wrote:
> From: John Garry<john.g.garry@oracle.com>
> 
> [ Upstream commit b1a7ad8b5c4fa28325ee7b369a2d545d3e16ccde ]
> 
> Add proper bio_split() error handling. For any error, call
> raid_end_bio_io() and return.
> 
> For the case of an in the write path, we need to undo the increment in
> the rdev pending count and NULLify the r1_bio->bios[] pointers.
> 
> For read path failure, we need to undo rdev pending count increment from
> the earlier read_balance() call.
> 
> Reviewed-by: Yu Kuai<yukuai3@huawei.com>
> Reviewed-by: Hannes Reinecke<hare@suse.de>
> Signed-off-by: John Garry<john.g.garry@oracle.com>
> Link:https://urldefense.com/v3/__https://lore.kernel.org/ 
> r/20241111112150.3756529-6-john.g.garry@oracle.com__;!!ACWV5N9M2RV99hQ! 
> N4dieLgwxARnrFj9y51O80wHlzi_DtX0LRE- 
> kw6X6c0oWji1y3NBy1HIbHaHEkfRZJ57mxEq0kY_YRAnPg$ 
> Signed-off-by: Jens Axboe<axboe@kernel.dk>
> Signed-off-by: Sasha Levin<sashal@kernel.org>

I don't think that it is proper to backport this change without 
bio_split() error handling update. And I don't think that it is worth 
backporting the bio_split() error handling update.