On Tue, Nov 16, 2010 at 6:09 AM, Nick Piggin <npiggin@xxxxxxxxx> wrote:
> @@ -290,13 +300,18 @@ void dput(struct dentry *dentry)
> * want to reduce dcache_lock anyway so this will
> * get improved.
> */
> +drop1:
> spin_unlock(&dentry->d_lock);
> goto repeat;
> }
> - if (parent && !spin_trylock(&parent->d_lock)) {
> - spin_unlock(&dentry->d_lock);
> + if (!spin_trylock(&dcache_inode_lock)) {
> +drop2:
> spin_unlock(&dcache_lock);
> - goto repeat;
> + goto drop1;
> + }
> + if (parent && !spin_trylock(&parent->d_lock)) {
> + spin_unlock(&dcache_inode_lock);
> + goto drop2;
> }
> }
> dentry->d_count--;
Another ugh moment. But it gets better in patches 18 and 20.
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