Re: [PATCH 4/6] loop: improve loop_process_work

[PATCH 0/6] loop: cleanup charging io to mem/blkcg · Ming Lei <hidden> · 2021-07-05
[PATCH 1/6] loop: clean up blkcg association · Ming Lei <hidden> · 2021-07-05
Re: [PATCH 1/6] loop: clean up blkcg association · Christoph Hellwig <hch@lst.de> · 2021-07-06
Re: [PATCH 1/6] loop: clean up blkcg association · Ming Lei <hidden> · 2021-07-08
[PATCH 2/6] loop: conver timer for monitoring idle worker into dwork · Ming Lei <hidden> · 2021-07-05
Re: [PATCH 2/6] loop: conver timer for monitoring idle worker into dwork · Christoph Hellwig <hch@lst.de> · 2021-07-06
Re: [PATCH 2/6] loop: conver timer for monitoring idle worker into dwork · Ming Lei <hidden> · 2021-07-08
[PATCH 3/6] loop: add __loop_free_idle_workers() for covering freeing workers in clearing FD · Ming Lei <hidden> · 2021-07-05
[PATCH 4/6] loop: improve loop_process_work · Ming Lei <hidden> · 2021-07-05
Re: [PATCH 4/6] loop: improve loop_process_work · Christoph Hellwig <hch@lst.de> · 2021-07-06
[PATCH 5/6] loop: use xarray to store workers · Ming Lei <hidden> · 2021-07-05
[PATCH 6/6] loop: don't add worker into idle list · Ming Lei <hidden> · 2021-07-05
Re: [PATCH 6/6] loop: don't add worker into idle list · Dan Schatzberg <hidden> · 2021-07-06
Re: [PATCH 6/6] loop: don't add worker into idle list · Ming Lei <hidden> · 2021-07-07
Re: [PATCH 6/6] loop: don't add worker into idle list · Dan Schatzberg <hidden> · 2021-07-07
Re: [PATCH 6/6] loop: don't add worker into idle list · Ming Lei <hidden> · 2021-07-08
Re: [PATCH 6/6] loop: don't add worker into idle list · Dan Schatzberg <hidden> · 2021-07-08
Re: [PATCH 6/6] loop: don't add worker into idle list · Ming Lei <hidden> · 2021-07-08
Re: [PATCH 6/6] loop: don't add worker into idle list · Dan Schatzberg <hidden> · 2021-07-08
Re: [PATCH 6/6] loop: don't add worker into idle list · Ming Lei <hidden> · 2021-07-09
Re: [PATCH 6/6] loop: don't add worker into idle list · Dan Schatzberg <hidden> · 2021-07-09
Re: [PATCH 6/6] loop: don't add worker into idle list · Dan Schatzberg <hidden> · 2021-07-08

From: Christoph Hellwig <hch@lst.de>
Date: 2021-07-06 05:54:52

On Mon, Jul 05, 2021 at 06:26:05PM +0800, Ming Lei wrote:

Avoid to acquire the spinlock for handling every loop command, and hold
lock once for taking all commands.

I think the proper answer is to stop using this badly reimplement workqueue
that can't even get basic things right.

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