The mount-level parsing is getting hosed. You need to group the options 
together so that they get passed as options. Try something like:

#mount -t yaffs2 -o  "no-checkpoint-read no-checkpoint-write" \
/dev/mtdblock9    /mnt/yaffs/


On Saturday 20 October 2007 02:16:33 ttaier@126.com wrote:
> Hi all,
>
> When I tried to mount yaffs2 with two options "no-checkpoint-read"
> "no-checkpoint-write" together on linux-2.6.22, I got failed:
>
>   " # mount -t yaffs2 -o no-checkpoint-read,no-checkpoint-write   
> /dev/mtdblock9    /mnt/yaffs/</DIV> <DIV>      yaffs: Bad mount option "
> "<BR>      mount: Mounting /dev/mtdblock9 on /mnt/yaffs/ failed: Invalid
> argument "
>
> Both "no-checkpoint-read" and  "no-checkpoint-write" are supported by
> yaffs2,  but  yaffs_parse_options failed to parse them.  Seems
> yaffs_parse_options cann't skip the comma. I attached a patch to fix this
> bug.
>
>
> ----------
>   Jiangli
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