linux-kernel - Re: [PATCH 0/2 v4][rfc] tmpfs not interleaving properly

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Date:	Mon, 2 Jul 2012 15:54:20 -0500
From:	Nathan Zimmer <nzimmer@....com>
To:	<linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>
CC:	Christoph Lameter <cl@...ux.com>, Nick Piggin <npiggin@...il.com>,
	Hugh Dickins <hughd@...gle.com>,
	Lee Schermerhorn <lee.schermerhorn@...com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Rik van Riel <riel@...hat.com>
Subject: Re: [PATCH 0/2 v4][rfc] tmpfs not interleaving properly

On 07/02/2012 03:26 PM, Nathan Zimmer wrote:
> When tmpfs has the memory policy interleaved it always starts allocating at each
> file at node 0.  When there are many small files the lower nodes fill up
> disproportionately.
> This patch spreads out node usage by starting files at nodes other then 0.
> The tmpfs superblock grants an offset for each inode as they are created. Each
> then uses that offset to proved a prefered first node for its interleave in
> the shmem_interleave.
>
> v2: passed preferred node via addr
> v3: using current->cpuset_mem_spread_rotor instead of random_node
> v4: Switching the rotor and attempting to provide an interleave function
> Also splitting the patch into two sections.
>
> Cc: Christoph Lameter <cl@...ux.com>
> Cc: Nick Piggin <npiggin@...il.com>
> Cc: Hugh Dickins <hughd@...gle.com>
> Cc: Lee Schermerhorn <lee.schermerhorn@...com>
> Cc: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
> Cc: Rik van Riel <riel@...hat.com>
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Signed-off-by: Nathan T Zimmer <nzimmer@....com>
> ---
>
>   include/linux/mm.h       |    6 ++++++
>   include/linux/shmem_fs.h |    2 ++
>   mm/mempolicy.c           |    4 ++++
>   mm/shmem.c               |   33 ++++++++++++++++++++++++++++++---
>   4 files changed, 42 insertions(+), 3 deletions(-)
>
> --
> To unsubscribe, send a message with 'unsubscribe linux-mm' in
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> see: http://www.linux-mm.org/ .
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I apologize, it seems I have sent the patch before running checkpatch.
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