Re: [patch 13/28] fs: dcache scale d_unhashed
From: Tim Pepper
Date: Fri Nov 19 2010 - 14:41:16 EST
On Tue, Nov 16, 2010 at 6:09 AM, Nick Piggin <npiggin@xxxxxxxxx> wrote:
> @@ -1797,7 +1822,10 @@ static void d_move_locked(struct dentry
> /*
> * XXXX: do we really need to take target->d_lock?
> */
> - if (target < dentry) {
> + if (d_ancestor(dentry, target)) {
> + spin_lock(&dentry->d_lock);
> + spin_lock_nested(&target->d_lock, DENTRY_D_LOCK_NESTED);
> + } else if (d_ancestor(target, dentry) || target < dentry) {
> spin_lock(&target->d_lock);
> spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);
> } else {
This is the first hunk out of the series where I feel like reading the
new code makes me say "ugh".
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