Re: [PATCH 01/11] blk-mq: Add blk_mq_init_queue_ops()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 22/03/2022 11:18, Christoph Hellwig wrote:
On Tue, Mar 22, 2022 at 06:39:35PM +0800, John Garry wrote:
Add an API to allocate a request queue which accepts a custom set of
blk_mq_ops for that request queue.

The reason which we may want custom ops is for queuing requests which we
don't want to go through the normal queuing path.

Eww.  I really do not think we should do separate ops per queue, as that
is going to get us into a deep mess eventually.


Yeah... so far (here) it works out quite nicely, as we don't need to change the SCSI blk mq ops nor allocate a scsi_device - everything is just separate.

The other method mentioned previously was to add the request "reserved" flag and add new paths in scsi_queue_rq() et al to handle this, but that gets messy.

Any other ideas ...?

Cheers,
John



[Index of Archives]     [Linux Filesystems]     [Linux SCSI]     [Linux RAID]     [Git]     [Kernel Newbies]     [Linux Newbie]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Samba]     [Device Mapper]

  Powered by Linux