[PATCH 00/12] Swap-over-NBD without deadlocking v1 · Mel Gorman <mgorman@suse.de> · 2011-04-14
[PATCH 01/12] mm: Serialize access to min_free_kbytes · Mel Gorman <mgorman@suse.de> · 2011-04-14
[PATCH 07/12] netvm: Allow the use of __GFP_MEMALLOC by specific sockets · Mel Gorman <mgorman@suse.de> · 2011-04-14
[PATCH 06/12] net: Introduce sk_allocation() to allow addition of GFP flags depending on the individual socket · Mel Gorman <mgorman@suse.de> · 2011-04-14
[PATCH 08/12] netvm: Allow skb allocation to use PFMEMALLOC reserves · Mel Gorman <mgorman@suse.de> · 2011-04-14
Re: [PATCH 08/12] netvm: Allow skb allocation to use PFMEMALLOC reserves · David Miller <davem@davemloft.net> · 2011-04-14
Re: [PATCH 08/12] netvm: Allow skb allocation to use PFMEMALLOC reserves · Mel Gorman <mgorman@suse.de> · 2011-04-15
[PATCH 12/12] mm: Throttle direct reclaimers if PF_MEMALLOC reserves are low and swap is backed by network storage · Mel Gorman <mgorman@suse.de> · 2011-04-14
Re: [PATCH 12/12] mm: Throttle direct reclaimers if PF_MEMALLOC reserves are low and swap is backed by network storage · NeilBrown <hidden> · 2011-04-18
Re: [PATCH 12/12] mm: Throttle direct reclaimers if PF_MEMALLOC reserves are low and swap is backed by network storage · Mel Gorman <mgorman@suse.de> · 2011-04-18
Re: [PATCH 12/12] mm: Throttle direct reclaimers if PF_MEMALLOC reserves are low and swap is backed by network storage · NeilBrown <hidden> · 2011-04-18
Re: [PATCH 12/12] mm: Throttle direct reclaimers if PF_MEMALLOC reserves are low and swap is backed by network storage · Mel Gorman <mgorman@suse.de> · 2011-04-18
[PATCH 11/12] nbd: Set SOCK_MEMALLOC for access to PFMEMALLOC reserves · Mel Gorman <mgorman@suse.de> · 2011-04-14
[PATCH 10/12] mm: Micro-optimise slab to avoid a function call · Mel Gorman <mgorman@suse.de> · 2011-04-14
[PATCH 09/12] netvm: Set PF_MEMALLOC as appropriate during SKB processing · Mel Gorman <mgorman@suse.de> · 2011-04-14
[PATCH 05/12] mm: Ignore mempolicies when using ALLOC_NO_WATERMARK · Mel Gorman <mgorman@suse.de> · 2011-04-14
[PATCH 04/12] mm: allow PF_MEMALLOC from softirq context · Mel Gorman <mgorman@suse.de> · 2011-04-14
[PATCH 03/12] mm: Introduce __GFP_MEMALLOC to allow access to emergency reserves · Mel Gorman <mgorman@suse.de> · 2011-04-14
[PATCH 02/12] mm: sl[au]b: Add knowledge of PFMEMALLOC reserve pages · Mel Gorman <mgorman@suse.de> · 2011-04-14

Re: [PATCH 08/12] netvm: Allow skb allocation to use PFMEMALLOC reserves

From: David Miller <davem@davemloft.net>
Date: 2011-04-14 21:34:12
Also in: linux-mm, lkml

From: Mel Gorman <mgorman@suse.de>
Date: Thu, 14 Apr 2011 11:41:34 +0100

+extern int memalloc_socks;
+static inline int sk_memalloc_socks(void)
+{
+	return memalloc_socks;
+}
+

...

+static DEFINE_MUTEX(memalloc_socks_lock);
+int memalloc_socks __read_mostly;

Please use an atomic_t, it has to be more efficient than this mutex
business.

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