qemu-devel
[Top][All Lists]
Advanced
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Qemu-devel] [PATCH] Block: don't do copy-on-read in before_write_no

From: Paolo Bonzini
Subject: Re: [Qemu-devel] [PATCH] Block: don't do copy-on-read in before_write_notifier
Date: Tue, 18 Aug 2015 22:41:40 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.1.0 
On 18/08/2015 19:54, Wen Congyang wrote:
> We will copy data in before_write_notifier to do backup.
> It is a nested I/O request, so we cannot do copy-on-read.

Can you explain why?  What is the bug that this is fixing?

Paolo

> Signed-off-by: Wen Congyang <address@hidden>
reply via email to
[Prev in Thread] Current Thread [Next in Thread]