bcache: fix I/O accounting leak

[PATCH v3 0/2] bcache: fix I/O accounting leak

Posted by zhangshida2026@163.com 1 week, 5 days ago

From: Shida Zhang <zhangshida@kylinos.cn>

This series addresses an I/O accounting leak where detached bcache
devices could report 100% utilization in iostat after completion
of discard requests.

Changes since v2:
- Omitting the dead NULL check for bio_alloc_clone() (suggested by hch).
- Updated the Fixes tag for the accounting leak.

Shida Zhang (2):
  bcache: remove dead code in detached_dev_do_request
  bcache: fix I/O accounting leak in detached_dev_do_request

 drivers/md/bcache/request.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

-- 
2.34.1

Re: [PATCH v3 0/2] bcache: fix I/O accounting leak

Posted by Jens Axboe 1 week, 3 days ago

On Tue, 27 Jan 2026 16:21:10 +0800, zhangshida2026@163.com wrote:
> This series addresses an I/O accounting leak where detached bcache
> devices could report 100% utilization in iostat after completion
> of discard requests.
> 
> Changes since v2:
> - Omitting the dead NULL check for bio_alloc_clone() (suggested by hch).
> - Updated the Fixes tag for the accounting leak.
> 
> [...]

Applied, thanks!

[1/2] bcache: remove dead code in detached_dev_do_request
      commit: 6ea84d7a92cb0b30aaf7d2066a69e28e27932332
[2/2] bcache: fix I/O accounting leak in detached_dev_do_request
      commit: 4da7c5c3ec34d839bba6e035c3d05c447a2f9d4f

Best regards,
-- 
Jens Axboe

Re:[PATCH v3 0/2] bcache: fix I/O accounting leak

Posted by zhangshida2026 1 week, 3 days ago

















At 2026-01-27 16:21:10, zhangshida2026@163.com wrote:
>From: Shida Zhang <zhangshida@kylinos.cn>
>
>This series addresses an I/O accounting leak where detached bcache
>devices could report 100% utilization in iostat after completion
>of discard requests.
>
>Changes since v2:
>- Omitting the dead NULL check for bio_alloc_clone() (suggested by hch).
>- Updated the Fixes tag for the accounting leak.
>
>Shida Zhang (2):
>  bcache: remove dead code in detached_dev_do_request
>  bcache: fix I/O accounting leak in detached_dev_do_request
>
> drivers/md/bcache/request.c | 6 +-----
> 1 file changed, 1 insertion(+), 5 deletions(-)

>


Hi Jens,

The patches have been reviewed by Christoph and acked by Coly. 
Given that we are now at rc7, I wanted to see if you would consider picking 
these up for the 6.19 cycle?

Thank you for your time and for all your work.

Best regards,
Shida Zhang

>-- 
>2.34.1