[Linux-cachefs] Re: [PATCH 7/5] Optimise d_find_alias()

[David Howells]

Andrew Morton <akpm at osdl.org> wrote:

> How can we get away without a barrier?

Is this what you're thinking of:

	struct dentry * d_find_alias(struct inode *inode)
	{
		struct dentry *de = NULL;

		smp_rb();
		if (!list_empty(&inode->i_dentry)) {
			spin_lock(&dcache_lock);
			de = __d_find_alias(inode, 0);
			spin_unlock(&dcache_lock);
		}
		return de;
	}


David