linux-kernel - Re: [PATCH mmotm] radix-tree: rewrite radix_tree_locate

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Date:	Tue, 3 May 2016 14:28:57 -0600
From:	Ross Zwisler <ross.zwisler@...ux.intel.com>
To:	Hugh Dickins <hughd@...gle.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Matthew Wilcox <willy@...ux.intel.com>,
	Ross Zwisler <ross.zwisler@...ux.intel.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH mmotm] radix-tree: rewrite radix_tree_locate_item fix

On Sun, May 01, 2016 at 09:13:18PM -0700, Hugh Dickins wrote:
> radix_tree_locate_item() is often returning the wrong index, causing
> swapoff of shmem to hang because it cannot find the swap entry there.
> __locate()'s use of base is bogus, it adds an offset twice into index.
> 
> Signed-off-by: Hugh Dickins <hughd@...gle.com>

Thank you for the fix!

Reviewed-by: Ross Zwisler <ross.zwisler@...ux.intel.com>