Re: [PATCH V4] scsi: target: tcmu: Make cmd_ring_size changeable via configfs

Martin K. Petersen
2022-02-28T03:43:39Z

On Wed, 16 Feb 2022 10:21:49 +0800, Guixin Liu wrote:

> Make cmd_ring_size changeable similar to the way it is done for
> max_data_area_mb, the reason is that our tcmu client will create
> thousands of tcmu instances, and this will consume lots of mem with
> default 8Mb cmd ring size for every backstore.
>
> One can change the value by typing:
> echo "cmd_ring_size_mb=N" > control
> The "N" is a integer between 1 to 8, if set 1, the cmd ring can hold
> about 6k cmds(tcmu_cmd_entry about 176 byte) at least.
>
> [...]

Applied to 5.18/scsi-queue, thanks!

[1/1] scsi: target: tcmu: Make cmd_ring_size changeable via configfs
https://git.kernel.org/mkp/scsi/c/c7ede4f044b9

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Martin K. Petersen Oracle Linux Engineering