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authorLinus Torvalds <torvalds@linux-foundation.org>2012-01-12 06:52:23 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-12 06:52:23 +0400
commit6296e5d3c067df41980a5fd09ad4cc6765f79bb9 (patch)
treeac10bc5321ac1d750612c0e0ae53d6c4097c5734 /Documentation
parentc086ae4ed94f9a1d283318e006813268c2dbf9fc (diff)
parent5878cf431ca7233a56819ca6970153ac0b129599 (diff)
downloadlinux-6296e5d3c067df41980a5fd09ad4cc6765f79bb9.tar.xz
Merge branch 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux
* 'slab/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux: slub: disallow changing cpu_partial from userspace for debug caches slub: add missed accounting slub: Extract get_freelist from __slab_alloc slub: Switch per cpu partial page support off for debugging slub: fix a possible memleak in __slab_alloc() slub: fix slub_max_order Documentation slub: add missed accounting slab: add taint flag outputting to debug paths. slub: add taint flag outputting to debug paths slab: introduce slab_max_order kernel parameter slab: rename slab_break_gfp_order to slab_max_order
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/kernel-parameters.txt6
-rw-r--r--Documentation/vm/slub.txt2
2 files changed, 7 insertions, 1 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index c92b1532f05a..a8d389d72405 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -2395,6 +2395,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
slram= [HW,MTD]
+ slab_max_order= [MM, SLAB]
+ Determines the maximum allowed order for slabs.
+ A high setting may cause OOMs due to memory
+ fragmentation. Defaults to 1 for systems with
+ more than 32MB of RAM, 0 otherwise.
+
slub_debug[=options[,slabs]] [MM, SLUB]
Enabling slub_debug allows one to determine the
culprit if slab objects become corrupted. Enabling
diff --git a/Documentation/vm/slub.txt b/Documentation/vm/slub.txt
index f464f47bc60d..2acdda9601b0 100644
--- a/Documentation/vm/slub.txt
+++ b/Documentation/vm/slub.txt
@@ -117,7 +117,7 @@ can be influenced by kernel parameters:
slub_min_objects=x (default 4)
slub_min_order=x (default 0)
-slub_max_order=x (default 1)
+slub_max_order=x (default 3 (PAGE_ALLOC_COSTLY_ORDER))
slub_min_objects allows to specify how many objects must at least fit
into one slab in order for the allocation order to be acceptable.