linux-kernel - [PATCH] mm-slab: allocate kmem_cache with __GFP

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Date:	Wed, 20 Jul 2011 16:16:12 +0400
From:	Konstantin Khlebnikov <khlebnikov@...nvz.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Pekka Enberg <penberg@...nel.org>, <linux-mm@...ck.org>,
	Christoph Lameter <cl@...ux-foundation.org>,
	<linux-kernel@...r.kernel.org>, Matt Mackall <mpm@...enic.com>
Subject: [PATCH] mm-slab: allocate kmem_cache with __GFP_REPEAT

Order of sizeof(struct kmem_cache) can be bigger than PAGE_ALLOC_COSTLY_ORDER,
thus there is a good chance of unsuccessful allocation.
With __GFP_REPEAT buddy-allocator will reclaim/compact memory more aggressively.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@...nvz.org>
---
 mm/slab.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/mm/slab.c b/mm/slab.c
index d96e223..53bddc8 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -2304,7 +2304,7 @@ kmem_cache_create (const char *name, size_t size, size_t align,
 		gfp = GFP_NOWAIT;
 
 	/* Get cache's description obj. */
-	cachep = kmem_cache_zalloc(&cache_cache, gfp);
+	cachep = kmem_cache_zalloc(&cache_cache, gfp | __GFP_REPEAT);
 	if (!cachep)
 		goto oops;
 

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