Re: [PATCH v2] mm: Give kmap_lock before call flush_tlb_kernel_rang，avoid kmap_high deadlock.

[Andrew Morton]

On Fri, 19 Jul 2024 00:18:32 +0800 zhangchun <zhang.chuna@xxxxxxx> wrote:

> Very sorry to disturb! Just a friendly ping to check in on the status of the 
> patch "Give kmap_lock before call flush_tlb_kernel_rang，avoid kmap_high deadlock.".  
> Please let me know if there is any additional information from my side.
> 

Please update the patch to include a code comment which explains why
we're dropping kmap_lock at this point.  And please update the
changelog to explain why holding kmap_lock was not necessary at this
point and why this is a safe change.  Then resend.