Re: [PATCH] erofs: remove erofs_dev_context->rwsem

[xtex]

Hi,

On Sunday, August 16, 2026 11:06:05 AM China Standard Time Gao Xiang wrote:
> Hi Bingwu,
> 
> On Sun, Aug 16, 2026 at 10:00:12AM +0800, Bingwu Zhang wrote:
> > From: Bingwu Zhang <xtex@xxxxxxxxxxxxx>
> > 
> > devs->tree is only modified in initialization and
> > destruction code paths and will never be concurrent
> > with data reading. Thus there is no need to guard
> > idr_alloc/idr_find with a rwsem.
> 
> Thanks for the patch.
> 
> In principle, yes, but it's also no problem to leave it as-is in case
> some use cases later need adjust the device_info of a dev for example
> at runtime.
> 
> Or if it causes any noticeable performance penalty, that will be one
> reason to drop it now.

Thanks for the reply. I don't think it caused any notice performance 
difference so it looks good to me to keep the rwsem.

Thanks,
Bingwu Zhang

> 
> Thanks,
> Gao Xiang
> 
> > Signed-off-by: Bingwu Zhang <xtex@xxxxxxxxxxxxx>