linux-kernel - Re: [PATCH 11/17] lib/interval

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Message-ID: <a1444ac4-623f-eded-83b3-76d76f2f54ce@redhat.com>
Date:   Sat, 22 Jul 2017 13:52:28 -0400
From:   Doug Ledford <dledford@...hat.com>
To:     Davidlohr Bueso <dave@...olabs.net>, akpm@...ux-foundation.org
Cc:     mingo@...nel.org, peterz@...radead.org, jack@...e.cz,
        torvalds@...ux-foundation.org, kirill.shutemov@...ux.intel.com,
        hch@...radead.org, ldufour@...ux.vnet.ibm.com, mhocko@...e.com,
        mgorman@...hsingularity.net, linux-kernel@...r.kernel.org,
        David Airlie <airlied@...ux.ie>,
        dri-devel@...ts.freedesktop.org,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Christian Benvenuti <benve@...co.com>,
        linux-rdma@...r.kernel.org, Davidlohr Bueso <dbueso@...e.de>
Subject: Re: [PATCH 11/17] lib/interval_tree: fast overlap detection

On 7/18/2017 9:45 PM, Davidlohr Bueso wrote:
> Allow interval trees to quickly check for overlaps to avoid
> unnecesary tree lookups in interval_tree_iter_first().
> 
> As of this patch, all interval tree flavors will require
> using a 'rb_root_cached' such that we can have the leftmost
> node easily available. While most users will make use of this
> feature, those with special functions (in addition to the generic
> insert, delete, search calls) will avoid using the cached
> option as they can do funky things with insertions -- for example,
> vma_interval_tree_insert_after().
> 
> Cc: David Airlie <airlied@...ux.ie>
> Cc: dri-devel@...ts.freedesktop.org
> Cc: "Michael S. Tsirkin" <mst@...hat.com>
> Cc: Jason Wang <jasowang@...hat.com>
> Cc: Doug Ledford <dledford@...hat.com>
> Cc: Christian Benvenuti <benve@...co.com>
> Cc: linux-rdma@...r.kernel.org
> Acked-by: Christian König <christian.koenig@....com>
> Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>
> Signed-off-by: Davidlohr Bueso <dbueso@...e.de>

Ack for the RDMA parts.

Acked-by: Doug Ledford <dledford@...hat.com>


-- 
Doug Ledford <dledford@...hat.com>
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