[PATCH review 5/6] vfs: Test for and handle paths that are unreachable from their mnt_root

Al Viro viro at ZenIV.linux.org.uk
Mon Aug 10 04:38:14 UTC 2015

On Mon, Aug 03, 2015 at 04:30:22PM -0500, Eric W. Biederman wrote:

> +	if (!is_subdir(nd->path.dentry, mnt->mnt_root))
> +		return false;

Umm...  What's to protect us from racing with d_move() right here?

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