Re: [patch 1/5] mm: add nofail variants of kmalloc kcalloc and kzalloc (Reiser Filesystem Devel)


Re: [patch 1/5] mm: add nofail variants of kmalloc kcalloc and kzalloc
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To: David Rientjes <rientjes@xxxxxxxxxx>
Subject: Re: [patch 1/5] mm: add nofail variants of kmalloc kcalloc and kzalloc
From: Christoph Lameter <cl@xxxxxxxxx>
Date: Thu, 26 Aug 2010 09:16:19 -0500 (CDT)
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Dave Chinner <david@xxxxxxxxxxxxx>, "Ted Ts'o" <tytso@xxxxxxx>, Jens Axboe <jaxboe@xxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Neil Brown <neilb@xxxxxxx>, Alasdair G Kergon <agk@xxxxxxxxxx>, Chris Mason <chris.mason@xxxxxxxxxx>, Steven Whitehouse <swhiteho@xxxxxxxxxx>, Jan Kara <jack@xxxxxxx>, Frederic Weisbecker <fweisbec@xxxxxxxxx>, "linux-raid@xxxxxxxxxxxxxxx" <linux-raid@xxxxxxxxxxxxxxx>, "linux-btrfs@xxxxxxxxxxxxxxx" <linux-btrfs@xxxxxxxxxxxxxxx>, "cluster-devel@xxxxxxxxxx" <cluster-devel@xxxxxxxxxx>, "linux-ext4@xxxxxxxxxxxxxxx" <linux-ext4@xxxxxxxxxxxxxxx>, "reiserfs-devel@xxxxxxxxxxxxxxx" <reiserfs-devel@xxxxxxxxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>
In-reply-to: <alpine.DEB.2.00.1008252010260.10986@xxxxxxxxxxxxxxxxxxxxxxxxx>
User-agent: Alpine 2.00 (DEB 1167 2008-08-23)

On Wed, 25 Aug 2010, David Rientjes wrote:

> Because we can remove the flag, remove branches from the page allocator
> slowpath, and none of these allocations actually are dependent on
> __GFP_NOFAIL since they are all under PAGE_ALLOC_COSTLY_ORDER.

Then we can simply remove __GFP_NOFAIL? Functions are only needed for
higher order allocs that can fail?

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- [patch 1/5] mm: add nofail variants of kmalloc kcalloc and kzalloc
  - From: David Rientjes
- Re: [patch 1/5] mm: add nofail variants of kmalloc kcalloc and kzalloc
  - From: Peter Zijlstra
- Re: [patch 1/5] mm: add nofail variants of kmalloc kcalloc and kzalloc
  - From: Jens Axboe
- Re: [patch 1/5] mm: add nofail variants of kmalloc kcalloc and kzalloc
  - From: David Rientjes
- Re: [patch 1/5] mm: add nofail variants of kmalloc kcalloc and kzalloc
  - From: Ted Ts'o
- Re: [patch 1/5] mm: add nofail variants of kmalloc kcalloc and kzalloc
  - From: Peter Zijlstra
- Re: [patch 1/5] mm: add nofail variants of kmalloc kcalloc and kzalloc
  - From: Ted Ts'o
- Re: [patch 1/5] mm: add nofail variants of kmalloc kcalloc and kzalloc
  - From: Peter Zijlstra
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  - From: David Rientjes
- Re: [patch 1/5] mm: add nofail variants of kmalloc kcalloc and kzalloc
  - From: Christoph Lameter
- Re: [patch 1/5] mm: add nofail variants of kmalloc kcalloc and kzalloc
  - From: David Rientjes
- Re: [patch 1/5] mm: add nofail variants of kmalloc kcalloc and kzalloc
  - From: Christoph Lameter
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  - From: David Rientjes
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