mounting ubifs read-only, is it really readonly, not any wirte/erase?

[Caizhiyong]

Dear Artem Bityutskiy:
	Thank you for your reply.
    I have solved this problem, UBI will implements wear-leveling, even if ubifs is mounted as read only.
         
Looking forward to your feedback.
Best regards,
Cai Zhiyong.

http://www.huawei.com
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> -----Original Message-----
> From: Artem Bityutskiy [mailto:dedekind1 at gmail.com]
> Sent: Monday, July 01, 2013 4:34 PM
> To: Caizhiyong
> Cc: linux-mtd at lists.infradead.org; Renxueliang; Quyaxin; Jiangzhonglin;
> Wanglin (Albert)
> Subject: Re: mounting ubifs read-only, is it really readonly, not any
> wirte/erase?
> 
> On Thu, 2013-05-16 at 13:36 +0000, Caizhiyong wrote:
> >     I'm using ubifs as root filesystem, and mounted readonly.
> >
> >     bootargs are:
> >         console=ttyAMA0,115200 ubi.mtd=3 root=ubi0:ubifs ro
> rootfstype=ubifsmtdparts=hi_sfc:-(spi);hinand:10M(10M),50M(50M),50M(50M),-
> (data)
> >
> >     I'm update ubi.img in uboot used command "nand write xxxx", but when
> kernel (linux 3.4) startup, there are some write/erase operation.
> >
> >     I'm add prints to the following functions:
> 
> Hi, I do not think I fully understand what is the problem, but it looks
> like you need to re-formulate it more carefully, and re-send with u-boot
> mailing list in CC.
> 
> --
> Best Regards,
> Artem Bityutskiy