The patch titled
Subject: slub: document setting min order with debug_guardpage_minorder > 0
has been added to the -mm tree. Its filename is
slub-document-setting-min-order-with-debug_guardpage_minorder-0.patch
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------------------------------------------------------
From: Stanislaw Gruszka <sgruszka@xxxxxxxxxx>
Subject: slub: document setting min order with debug_guardpage_minorder > 0
Signed-off-by: Stanislaw Gruszka <sgruszka@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/ABI/testing/sysfs-kernel-slab | 4 +++-
Documentation/vm/slub.txt | 4 +++-
2 files changed, 6 insertions(+), 2 deletions(-)
diff -puN Documentation/ABI/testing/sysfs-kernel-slab~slub-document-setting-min-order-with-debug_guardpage_minorder-0 Documentation/ABI/testing/sysfs-kernel-slab
--- a/Documentation/ABI/testing/sysfs-kernel-slab~slub-document-setting-min-order-with-debug_guardpage_minorder-0
+++ a/Documentation/ABI/testing/sysfs-kernel-slab
@@ -345,7 +345,9 @@ Description:
allocated. It is writable and can be changed to increase the
number of objects per slab. If a slab cannot be allocated
because of fragmentation, SLUB will retry with the minimum order
- possible depending on its characteristics.
+ possible depending on its characteristics.
+ When debug_guardpage_minorder > 0 parameter is specified, the
+ minimum possible order is used and cannot be changed.
What: /sys/kernel/slab/cache/order_fallback
Date: April 2008
diff -puN Documentation/vm/slub.txt~slub-document-setting-min-order-with-debug_guardpage_minorder-0 Documentation/vm/slub.txt
--- a/Documentation/vm/slub.txt~slub-document-setting-min-order-with-debug_guardpage_minorder-0
+++ a/Documentation/vm/slub.txt
@@ -131,7 +131,9 @@ slub_min_objects.
slub_max_order specified the order at which slub_min_objects should no
longer be checked. This is useful to avoid SLUB trying to generate
super large order pages to fit slub_min_objects of a slab cache with
-large object sizes into one high order page.
+large object sizes into one high order page. Setting parameter
+debug_guardpage_minorder > 0 forces setting slub_max_order to 0, what
+cause minimum possible order of slabs allocation.
SLUB Debug output
-----------------
_
Subject: Subject: slub: document setting min order with debug_guardpage_minorder > 0
Patches currently in -mm which might be from sgruszka@xxxxxxxxxx are
origin.patch
linux-next.patch
slub-document-setting-min-order-with-debug_guardpage_minorder-0.patch
mm-more-intensive-memory-corruption-debug.patch
mm-more-intensive-memory-corruption-debug-fix.patch
pm-hibernate-do-not-count-debug-pages-as-savable.patch
slub-min-order-when-debug_guardpage_minorder-0.patch
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