From: Christoph Lameter <cl@linux-foundation.org>
To: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org
Cc: Nick Piggin <npiggin@suse.de>
Cc: David Rientjes <rientjes@google.com>
Subject: [S+Q2 09/19] slub: discard_slab_unlock
Date: Fri, 09 Jul 2010 14:07:15 -0500 [thread overview]
Message-ID: <20100709190854.930694716@quilx.com> (raw)
In-Reply-To: 20100709190706.938177313@quilx.com
[-- Attachment #1: slub_discard_unlock --]
[-- Type: text/plain, Size: 1609 bytes --]
The sequence of unlocking a slab and freeing occurs multiple times.
Put the common into a single function. There is no intend here
to use this to enforce a sequencing of events leading up
to the discarding of a slab page.
Signed-off-by: Christoph Lameter <cl@linux-foundation.org>
---
mm/slub.c | 16 ++++++++++------
1 file changed, 10 insertions(+), 6 deletions(-)
Index: linux-2.6/mm/slub.c
===================================================================
--- linux-2.6.orig/mm/slub.c 2010-06-01 08:58:50.000000000 -0500
+++ linux-2.6/mm/slub.c 2010-06-01 08:58:54.000000000 -0500
@@ -1260,6 +1260,13 @@ static __always_inline int slab_trylock(
return rc;
}
+static void discard_slab_unlock(struct kmem_cache *s,
+ struct page *page)
+{
+ slab_unlock(page);
+ discard_slab(s, page);
+}
+
/*
* Management of partially allocated slabs
*/
@@ -1437,9 +1444,8 @@ static void unfreeze_slab(struct kmem_ca
add_partial(n, page, 1);
slab_unlock(page);
} else {
- slab_unlock(page);
stat(s, FREE_SLAB);
- discard_slab(s, page);
+ discard_slab_unlock(s, page);
}
}
}
@@ -1822,9 +1828,8 @@ slab_empty:
remove_partial(s, page);
stat(s, FREE_REMOVE_PARTIAL);
}
- slab_unlock(page);
stat(s, FREE_SLAB);
- discard_slab(s, page);
+ discard_slab_unlock(s, page);
return;
debug:
@@ -2893,8 +2898,7 @@ int kmem_cache_shrink(struct kmem_cache
*/
list_del(&page->lru);
n->nr_partial--;
- slab_unlock(page);
- discard_slab(s, page);
+ discard_slab_unlock(s, page);
} else {
list_move(&page->lru,
slabs_by_inuse + page->inuse);
next prev parent reply other threads:[~2010-07-09 19:12 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-09 19:07 [S+Q2 00/19] SLUB with queueing (V2) beats SLAB netperf TCP_RR Christoph Lameter
2010-07-09 19:07 ` [S+Q2 01/19] Bugfix for semop() not reporting successful operation Christoph Lameter
2010-07-09 19:07 ` [S+Q2 02/19] percpu: make @dyn_size always mean min dyn_size in first chunk init functions Christoph Lameter
2010-07-09 19:07 ` [S+Q2 03/19] percpu: allow limited allocation before slab is online Christoph Lameter
2010-07-09 19:07 ` [S+Q2 04/19] slub: Use a constant for a unspecified node Christoph Lameter
2010-07-09 19:07 ` [S+Q2 05/19] SLUB: Constants need UL Christoph Lameter
2010-07-09 19:07 ` [S+Q2 06/19] slub: Check kasprintf results in kmem_cache_init() Christoph Lameter
2010-07-14 22:16 ` David Rientjes
2010-07-09 19:07 ` [S+Q2 07/19] slub: Allow removal of slab caches during boot Christoph Lameter
2010-07-14 23:48 ` David Rientjes
2010-07-19 0:07 ` Benjamin Herrenschmidt
2010-07-19 16:39 ` Christoph Lameter
2010-07-31 9:41 ` Pekka Enberg
2010-08-02 15:36 ` Christoph Lameter
2010-08-03 4:32 ` Pekka Enberg
2010-07-09 19:07 ` [S+Q2 08/19] slub: Use kmem_cache flags to detect if slab is in debugging mode Christoph Lameter
2010-07-09 19:07 ` Christoph Lameter [this message]
2010-07-09 19:07 ` [S+Q2 10/19] slub: remove dynamic dma slab allocation Christoph Lameter
2010-07-09 19:07 ` [S+Q2 11/19] slub: Remove static kmem_cache_cpu array for boot Christoph Lameter
2010-07-09 19:07 ` [S+Q2 12/19] slub: Dynamically size kmalloc cache allocations Christoph Lameter
2010-07-09 19:07 ` [S+Q2 13/19] slub: Extract hooks for memory checkers from hotpaths Christoph Lameter
2010-07-09 19:07 ` [S+Q2 14/19] slub: Move gfpflag masking out of the hotpath Christoph Lameter
2010-07-09 19:07 ` [S+Q2 15/19] SLUB: Add SLAB style per cpu queueing Christoph Lameter
2010-07-09 19:07 ` [S+Q2 16/19] slub: Resize the new cpu queues Christoph Lameter
2010-07-09 19:07 ` [S+Q2 17/19] SLUB: Get rid of useless function count_free() Christoph Lameter
2010-07-09 19:07 ` [S+Q2 18/19] SLUB: Remove MAX_OBJS limitation Christoph Lameter
2010-07-09 19:07 ` [S+Q2 19/19] slub: Drop allocator announcement Christoph Lameter
2010-07-10 19:56 ` [S+Q2 00/19] SLUB with queueing (V2) beats SLAB netperf TCP_RR Heinz Diehl
2010-07-12 15:11 ` Christoph Lameter
2010-07-12 16:39 ` Heinz Diehl
2010-07-12 17:00 ` Christoph Lameter
2010-07-13 13:56 ` Heinz Diehl
2010-07-14 2:01 ` Christoph Lameter
2010-07-14 11:51 ` Tejun Heo
2010-07-14 14:25 ` Heinz Diehl
2010-07-14 20:22 ` David Rientjes
2010-07-14 11:46 ` Tejun Heo
2010-07-14 22:26 ` David Rientjes
2010-07-15 20:17 ` Christoph Lameter
2010-07-15 20:30 ` David Rientjes
2010-07-14 23:52 ` David Rientjes
2010-07-16 8:23 ` Pekka Enberg
2010-07-16 9:02 ` David Rientjes
2010-07-19 0:16 ` Benjamin Herrenschmidt
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