Re: [PATCH #3] reiserfs: Fix permissions on .reiserfs_priv

[Matt McCutchen]

On Thu, 2010-04-08 at 23:38 +0200, Edward Shishkin wrote:
> Jeff Mahoney wrote:
> >  [...] This patch resolves the issue by properly hiding .reiserfs_priv. This
> >  was the intent of the xattr poisoning code, but it appears to have
> >  never worked as expected. This is fixed by using d_revalidate instead
> >  of d_compare. [...]

The patch seems to rely on the fact that the priv_root dentry is stuck
in the dcache for as long as the filesystem is mounted, so that attempts
to follow ".reiserfs_priv" are guaranteed to match that dentry in the
cache and be refused by xattr_hide_revalidate.  Is my understanding
correct?

-- 
Matt

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