linux-kernel - Re: [PATCH v9 10/61] xarray: Change definition of sibling entries

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Message-ID: <20180316190001.56clqrub6gy6lzh5@destiny>
Date:   Fri, 16 Mar 2018 15:00:02 -0400
From:   Josef Bacik <josef@...icpanda.com>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Matthew Wilcox <mawilcox@...rosoft.com>,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        linux-fsdevel@...r.kernel.org,
        Ryusuke Konishi <konishi.ryusuke@....ntt.co.jp>,
        linux-nilfs@...r.kernel.org
Subject: Re: [PATCH v9 10/61] xarray: Change definition of sibling entries

On Tue, Mar 13, 2018 at 06:25:48AM -0700, Matthew Wilcox wrote:
> From: Matthew Wilcox <mawilcox@...rosoft.com>
> 
> Instead of storing a pointer to the slot containing the canonical entry,
> store the offset of the slot.  Produces slightly more efficient code
> (~300 bytes) and simplifies the implementation.
> 
> Signed-off-by: Matthew Wilcox <mawilcox@...rosoft.com>
> ---
>  include/linux/xarray.h | 93 ++++++++++++++++++++++++++++++++++++++++++++++++++
>  lib/radix-tree.c       | 66 +++++++++++------------------------
>  2 files changed, 112 insertions(+), 47 deletions(-)
> 

Reviewed-by: Josef Bacik <jbacik@...com>

Thanks,

Josef