Re: [PATCH 07/24] scsi-multipath: clone each bio

[John Garry]

On 02/03/2026 16:27, Benjamin Marzinski wrote:
> > Every bio which we are sent is cloned. And SCSI_MAX_QUEUE_DEPTH is used as
> > the cached bio size - wouldn't it make sense to cache more than 2 bios?
> IIRC, the reserved pool is there to guarantee forward progress under
> memory pressure, so that if the system is short on memory, and it needs
> to write out data to this multipath device in order to free up memory,
> it there will be enough resources to do that.
>
> Under normal conditions, your new bios should be getting pulled from the
> per-cpu cache anyways, since you set BIOSET_PERCPU_CACHE. That's going
> to be the fastest way to get one.

ok, got it

Thanks