On Fri, 5 May 2000, Tigran Aivazian wrote:
>
> Here is the patch that fixes the problem. But I still want to understand
> why Linus put those extra dget/dput in mknod/link/unlink... perhaps they
> are needed after all.
They are definitely needed.
In order to unmout a ramdisk, it has to be empty. Which makes sense: it
would be bad if (for example) you by mistake unmounted a ramdisk due to
some kind of auto-unmount (autofs or supermount come to mind), and lost
all your data.
So you need to h ave a "rm -rf /ramdisk ; umount /ramdisk" or something
similar. And then umount will work.
Linus
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