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From: Christoph Lameter <cl@linux.com>
To: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: David Rientjes <rientjes@google.com>,
	Andi Kleen <andi@firstfloor.org>,
	tj@kernel.org, Metathronius Galabant <m.galabant@googlemail.com>,
	Matt Mackall <mpm@selenic.com>,
	Eric Dumazet <eric.dumazet@gmail.com>,
	Adrian Drzewiecki <z@drze.net>, Shaohua Li <shaohua.li@intel.com>,
	Alex Shi <alex.shi@intel.com>,
	linux-mm@kvack.org
Subject: [rfc 15/18] slub: new_slab_objects() can also get objects from partial list
Date: Fri, 11 Nov 2011 14:07:26 -0600	[thread overview]
Message-ID: <20111111200735.092268263@linux.com> (raw)
In-Reply-To: 20111111200711.156817886@linux.com

[-- Attachment #1: move_partials_into_new_slab --]
[-- Type: text/plain, Size: 1277 bytes --]

Signed-off-by: Christoph Lameter <cl@linux.com>

---
 mm/slub.c |   13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

Index: linux-2.6/mm/slub.c
===================================================================
--- linux-2.6.orig/mm/slub.c	2011-11-10 14:16:06.249338483 -0600
+++ linux-2.6/mm/slub.c	2011-11-10 14:22:31.831510734 -0600
@@ -2089,8 +2089,14 @@ static inline void *new_slab_objects(str
 {
 	void *freelist;
 	struct kmem_cache_cpu *c;
-	struct page *page = new_slab(s, flags, node);
+	struct page *page;
+
+	freelist = get_partial(s, flags, node);
 
+	if (freelist)
+		return freelist;
+
+	page = new_slab(s, flags, node);
 	if (page) {
 		c = __this_cpu_ptr(s->cpu_slab);
 		if (c->page)
@@ -2272,10 +2278,7 @@ new_slab:
 		goto redo;
 	}
 
-	freelist = get_partial(s, gfpflags, node);
-
-	if (!freelist)
-		freelist = new_slab_objects(s, gfpflags, node);
+	freelist = new_slab_objects(s, gfpflags, node);
 
 
 	if (unlikely(!freelist)) {

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  parent reply	other threads:[~2011-11-11 20:07 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-11-11 20:07 [rfc 00/18] slub: irqless/lockless slow allocation paths Christoph Lameter
2011-11-11 20:07 ` [rfc 01/18] slub: Get rid of the node field Christoph Lameter
2011-11-14 21:42   ` Pekka Enberg
2011-11-15 16:07     ` Christoph Lameter
2011-11-20 23:01   ` David Rientjes
2011-11-21 17:17     ` Christoph Lameter
2011-11-11 20:07 ` [rfc 02/18] slub: Separate out kmem_cache_cpu processing from deactivate_slab Christoph Lameter
2011-11-20 23:10   ` David Rientjes
2011-11-11 20:07 ` [rfc 03/18] slub: Extract get_freelist from __slab_alloc Christoph Lameter
2011-11-14 21:43   ` Pekka Enberg
2011-11-15 16:08     ` Christoph Lameter
2011-12-13 20:31       ` Pekka Enberg
2011-11-20 23:18   ` David Rientjes
2011-11-11 20:07 ` [rfc 04/18] slub: Use freelist instead of "object" in __slab_alloc Christoph Lameter
2011-11-14 21:44   ` Pekka Enberg
2011-11-20 23:22   ` David Rientjes
2011-11-11 20:07 ` [rfc 05/18] slub: Simplify control flow in __slab_alloc() Christoph Lameter
2011-11-14 21:45   ` Pekka Enberg
2011-11-20 23:24   ` David Rientjes
2011-11-11 20:07 ` [rfc 06/18] slub: Use page variable instead of c->page Christoph Lameter
2011-11-14 21:46   ` Pekka Enberg
2011-11-20 23:27   ` David Rientjes
2011-11-11 20:07 ` [rfc 07/18] slub: pass page to node_match() instead of kmem_cache_cpu structure Christoph Lameter
2011-11-20 23:28   ` David Rientjes
2011-11-11 20:07 ` [rfc 08/18] slub: enable use of deactivate_slab with interrupts on Christoph Lameter
2011-11-11 20:07 ` [rfc 09/18] slub: Run deactivate_slab with interrupts enabled Christoph Lameter
2011-11-11 20:07 ` [rfc 10/18] slub: Enable use of get_partial " Christoph Lameter
2011-11-11 20:07 ` [rfc 11/18] slub: Acquire_slab() avoid loop Christoph Lameter
2011-11-11 20:07 ` [rfc 12/18] slub: Remove kmem_cache_cpu dependency from acquire slab Christoph Lameter
2011-11-11 20:07 ` [rfc 13/18] slub: Add functions to manage per cpu freelists Christoph Lameter
2011-11-11 20:07 ` [rfc 14/18] slub: Decomplicate the get_pointer_safe call and fixup statistics Christoph Lameter
2011-11-11 20:07 ` Christoph Lameter [this message]
2011-11-11 20:07 ` [rfc 16/18] slub: Drop page field from kmem_cache_cpu Christoph Lameter
2011-11-11 20:07 ` [rfc 17/18] slub: Move __slab_free() into slab_free() Christoph Lameter
2011-11-11 20:07 ` [rfc 18/18] slub: Move __slab_alloc() into slab_alloc() Christoph Lameter
2011-11-16 17:39 ` [rfc 00/18] slub: irqless/lockless slow allocation paths Eric Dumazet
2011-11-16 17:45   ` Eric Dumazet
2011-11-20 23:32     ` David Rientjes
2011-11-20 23:30 ` David Rientjes

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