From: Christoph Hellwig <hch@infradead.org>
To: Mel Gorman <mgorman@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Linux-MM <linux-mm@kvack.org>,
Linux-Netdev <netdev@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
David Miller <davem@davemloft.net>, Neil Brown <neilb@suse.de>,
Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: [PATCH 00/14] Swap-over-NBD without deadlocking v5
Date: Thu, 7 Jul 2011 08:58:31 -0400 [thread overview]
Message-ID: <20110707125831.GA15412@infradead.org> (raw)
In-Reply-To: <20110707094737.GG15285@suse.de>
On Thu, Jul 07, 2011 at 10:47:37AM +0100, Mel Gorman wrote:
> Additional complexity is required for swap-over-NFS but affects the
> core kernel far less than this series. I do not have a series prepared
> but from what's in a distro kernel, supporting NFS requires extending
> address_space_operations for swapfile activation/deactivation with
> some minor helpers and the bulk of the remaining complexity within
> NFS itself.
The biggest addition for swap over NFS is to add proper support for
a filesystem interface to do I/O on random kernel pages instead of
the current nasty bmap hack the swapfile code is using. Splitting
that work from all the required VM infrastructure should make life
easier for everyone involved and allows merging it independeny as
both bits have other uses case as well.
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next prev parent reply other threads:[~2011-07-07 12:58 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-20 13:12 [PATCH 00/14] Swap-over-NBD without deadlocking v5 Mel Gorman
2011-06-20 13:12 ` [PATCH 01/14] mm: Serialize access to min_free_kbytes Mel Gorman
2011-07-06 23:44 ` Andrew Morton
2011-07-07 9:17 ` Mel Gorman
2011-06-20 13:12 ` [PATCH 02/14] mm: sl[au]b: Add knowledge of PFMEMALLOC reserve pages Mel Gorman
2011-06-20 13:12 ` [PATCH 03/14] mm: Introduce __GFP_MEMALLOC to allow access to emergency reserves Mel Gorman
2011-06-20 13:12 ` [PATCH 04/14] mm: allow PF_MEMALLOC from softirq context Mel Gorman
2011-06-20 13:12 ` [PATCH 05/14] mm: Ignore mempolicies when using ALLOC_NO_WATERMARK Mel Gorman
2011-06-20 13:12 ` [PATCH 06/14] net: Introduce sk_allocation() to allow addition of GFP flags depending on the individual socket Mel Gorman
2011-06-20 13:12 ` [PATCH 07/14] netvm: Allow the use of __GFP_MEMALLOC by specific sockets Mel Gorman
2011-06-20 13:12 ` [PATCH 08/14] netvm: Allow skb allocation to use PFMEMALLOC reserves Mel Gorman
2011-06-20 13:12 ` [PATCH 09/14] netvm: Propagate page->pfmemalloc to skb Mel Gorman
2011-06-20 13:12 ` [PATCH 10/14] netvm: Set PF_MEMALLOC as appropriate during SKB processing Mel Gorman
2011-06-20 13:12 ` [PATCH 11/14] mm: Micro-optimise slab to avoid a function call Mel Gorman
2011-06-20 13:12 ` [PATCH 12/14] nbd: Set SOCK_MEMALLOC for access to PFMEMALLOC reserves Mel Gorman
2011-06-20 13:12 ` [PATCH 13/14] mm: Throttle direct reclaimers if PF_MEMALLOC reserves are low and swap is backed by network storage Mel Gorman
2011-06-20 13:12 ` [PATCH 14/14] mm: Account for the number of times direct reclaimers get throttled Mel Gorman
2011-07-06 23:51 ` [PATCH 00/14] Swap-over-NBD without deadlocking v5 Andrew Morton
2011-07-07 9:47 ` Mel Gorman
2011-07-07 12:58 ` Christoph Hellwig [this message]
2011-07-15 14:10 ` Mel Gorman
2011-07-15 15:27 ` Christoph Hellwig
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