Re: [PATCH v2] fail dentry revalidation after namespace change

Glauber Costa [off-list ref] writes:

On 07/06/2012 01:37 PM, Eric W. Biederman wrote:

quoted

Glauber Costa [off-list ref] writes:

quoted

When we change the namespace tag of a sysfs entry, the associated dentry
is still kept around. readdir() will work correctly and not display the
old entries, but open() will still succeed, so will reads and writes.

Note reads and writes of file handles open before the move should
continue to work.

Well, yes. But do you see it as a big problem?

This can probably be fixed as well, but I foresee a big hackishness in
the way =p

At the moment it looks like a feature.

The only reason we bounce between different instances of sysfs is
because of the unfortunate sysfs directory layout that we need
to remain compatible with.

But I don't see it making much of a difference either way.

Eric