Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6: mm: SLOB fix reclaim_state mm: SLUB fix reclaim_state slub: add Documentation/ABI/testing/sysfs-kernel-slab slub: enforce MAX_ORDER
This commit is contained in:
Linus Torvalds
commit
bba0b4ec3c
3 changed files with 488 additions and 2 deletions
479
Documentation/ABI/testing/sysfs-kernel-slab
Normal file
479
Documentation/ABI/testing/sysfs-kernel-slab
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@ -0,0 +1,479 @@
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What: /sys/kernel/slab
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Date: May 2007
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KernelVersion: 2.6.22
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Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
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Description:
|
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The /sys/kernel/slab directory contains a snapshot of the
|
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internal state of the SLUB allocator for each cache. Certain
|
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files may be modified to change the behavior of the cache (and
|
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any cache it aliases, if any).
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Users: kernel memory tuning tools
|
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|
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What: /sys/kernel/slab/cache/aliases
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Date: May 2007
|
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KernelVersion: 2.6.22
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Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
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The aliases file is read-only and specifies how many caches
|
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have merged into this cache.
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What: /sys/kernel/slab/cache/align
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Date: May 2007
|
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KernelVersion: 2.6.22
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Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
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Christoph Lameter <cl@linux-foundation.org>
|
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Description:
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The align file is read-only and specifies the cache's object
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alignment in bytes.
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What: /sys/kernel/slab/cache/alloc_calls
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Date: May 2007
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KernelVersion: 2.6.22
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Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
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Description:
|
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The alloc_calls file is read-only and lists the kernel code
|
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locations from which allocations for this cache were performed.
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The alloc_calls file only contains information if debugging is
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enabled for that cache (see Documentation/vm/slub.txt).
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|
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What: /sys/kernel/slab/cache/alloc_fastpath
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Date: February 2008
|
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KernelVersion: 2.6.25
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Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
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Description:
|
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The alloc_fastpath file is read-only and specifies how many
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objects have been allocated using the fast path.
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Available when CONFIG_SLUB_STATS is enabled.
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|
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What: /sys/kernel/slab/cache/alloc_from_partial
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Date: February 2008
|
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KernelVersion: 2.6.25
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Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
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Description:
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The alloc_from_partial file is read-only and specifies how
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many times a cpu slab has been full and it has been refilled
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by using a slab from the list of partially used slabs.
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Available when CONFIG_SLUB_STATS is enabled.
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|
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What: /sys/kernel/slab/cache/alloc_refill
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Date: February 2008
|
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KernelVersion: 2.6.25
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Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
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Christoph Lameter <cl@linux-foundation.org>
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Description:
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The alloc_refill file is read-only and specifies how many
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times the per-cpu freelist was empty but there were objects
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available as the result of remote cpu frees.
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Available when CONFIG_SLUB_STATS is enabled.
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|
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What: /sys/kernel/slab/cache/alloc_slab
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Date: February 2008
|
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KernelVersion: 2.6.25
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Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
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Description:
|
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The alloc_slab file is read-only and specifies how many times
|
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a new slab had to be allocated from the page allocator.
|
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Available when CONFIG_SLUB_STATS is enabled.
|
||||
|
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What: /sys/kernel/slab/cache/alloc_slowpath
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Date: February 2008
|
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KernelVersion: 2.6.25
|
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Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
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Description:
|
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The alloc_slowpath file is read-only and specifies how many
|
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objects have been allocated using the slow path because of a
|
||||
refill or allocation from a partial or new slab.
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Available when CONFIG_SLUB_STATS is enabled.
|
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|
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What: /sys/kernel/slab/cache/cache_dma
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Date: May 2007
|
||||
KernelVersion: 2.6.22
|
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Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
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The cache_dma file is read-only and specifies whether objects
|
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are from ZONE_DMA.
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Available when CONFIG_ZONE_DMA is enabled.
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|
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What: /sys/kernel/slab/cache/cpu_slabs
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||||
Date: May 2007
|
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KernelVersion: 2.6.22
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Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The cpu_slabs file is read-only and displays how many cpu slabs
|
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are active and their NUMA locality.
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|
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What: /sys/kernel/slab/cache/cpuslab_flush
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Date: April 2009
|
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KernelVersion: 2.6.31
|
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Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The file cpuslab_flush is read-only and specifies how many
|
||||
times a cache's cpu slabs have been flushed as the result of
|
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destroying or shrinking a cache, a cpu going offline, or as
|
||||
the result of forcing an allocation from a certain node.
|
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Available when CONFIG_SLUB_STATS is enabled.
|
||||
|
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What: /sys/kernel/slab/cache/ctor
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Date: May 2007
|
||||
KernelVersion: 2.6.22
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The ctor file is read-only and specifies the cache's object
|
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constructor function, which is invoked for each object when a
|
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new slab is allocated.
|
||||
|
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What: /sys/kernel/slab/cache/deactivate_empty
|
||||
Date: February 2008
|
||||
KernelVersion: 2.6.25
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The file deactivate_empty is read-only and specifies how many
|
||||
times an empty cpu slab was deactivated.
|
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Available when CONFIG_SLUB_STATS is enabled.
|
||||
|
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What: /sys/kernel/slab/cache/deactivate_full
|
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Date: February 2008
|
||||
KernelVersion: 2.6.25
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Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The file deactivate_full is read-only and specifies how many
|
||||
times a full cpu slab was deactivated.
|
||||
Available when CONFIG_SLUB_STATS is enabled.
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What: /sys/kernel/slab/cache/deactivate_remote_frees
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Date: February 2008
|
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KernelVersion: 2.6.25
|
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Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The file deactivate_remote_frees is read-only and specifies how
|
||||
many times a cpu slab has been deactivated and contained free
|
||||
objects that were freed remotely.
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||||
Available when CONFIG_SLUB_STATS is enabled.
|
||||
|
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What: /sys/kernel/slab/cache/deactivate_to_head
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Date: February 2008
|
||||
KernelVersion: 2.6.25
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The file deactivate_to_head is read-only and specifies how
|
||||
many times a partial cpu slab was deactivated and added to the
|
||||
head of its node's partial list.
|
||||
Available when CONFIG_SLUB_STATS is enabled.
|
||||
|
||||
What: /sys/kernel/slab/cache/deactivate_to_tail
|
||||
Date: February 2008
|
||||
KernelVersion: 2.6.25
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The file deactivate_to_tail is read-only and specifies how
|
||||
many times a partial cpu slab was deactivated and added to the
|
||||
tail of its node's partial list.
|
||||
Available when CONFIG_SLUB_STATS is enabled.
|
||||
|
||||
What: /sys/kernel/slab/cache/destroy_by_rcu
|
||||
Date: May 2007
|
||||
KernelVersion: 2.6.22
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The destroy_by_rcu file is read-only and specifies whether
|
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slabs (not objects) are freed by rcu.
|
||||
|
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What: /sys/kernel/slab/cache/free_add_partial
|
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Date: February 2008
|
||||
KernelVersion: 2.6.25
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The file free_add_partial is read-only and specifies how many
|
||||
times an object has been freed in a full slab so that it had to
|
||||
added to its node's partial list.
|
||||
Available when CONFIG_SLUB_STATS is enabled.
|
||||
|
||||
What: /sys/kernel/slab/cache/free_calls
|
||||
Date: May 2007
|
||||
KernelVersion: 2.6.22
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The free_calls file is read-only and lists the locations of
|
||||
object frees if slab debugging is enabled (see
|
||||
Documentation/vm/slub.txt).
|
||||
|
||||
What: /sys/kernel/slab/cache/free_fastpath
|
||||
Date: February 2008
|
||||
KernelVersion: 2.6.25
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The free_fastpath file is read-only and specifies how many
|
||||
objects have been freed using the fast path because it was an
|
||||
object from the cpu slab.
|
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Available when CONFIG_SLUB_STATS is enabled.
|
||||
|
||||
What: /sys/kernel/slab/cache/free_frozen
|
||||
Date: February 2008
|
||||
KernelVersion: 2.6.25
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The free_frozen file is read-only and specifies how many
|
||||
objects have been freed to a frozen slab (i.e. a remote cpu
|
||||
slab).
|
||||
Available when CONFIG_SLUB_STATS is enabled.
|
||||
|
||||
What: /sys/kernel/slab/cache/free_remove_partial
|
||||
Date: February 2008
|
||||
KernelVersion: 2.6.25
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The file free_remove_partial is read-only and specifies how
|
||||
many times an object has been freed to a now-empty slab so
|
||||
that it had to be removed from its node's partial list.
|
||||
Available when CONFIG_SLUB_STATS is enabled.
|
||||
|
||||
What: /sys/kernel/slab/cache/free_slab
|
||||
Date: February 2008
|
||||
KernelVersion: 2.6.25
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The free_slab file is read-only and specifies how many times an
|
||||
empty slab has been freed back to the page allocator.
|
||||
Available when CONFIG_SLUB_STATS is enabled.
|
||||
|
||||
What: /sys/kernel/slab/cache/free_slowpath
|
||||
Date: February 2008
|
||||
KernelVersion: 2.6.25
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The free_slowpath file is read-only and specifies how many
|
||||
objects have been freed using the slow path (i.e. to a full or
|
||||
partial slab).
|
||||
Available when CONFIG_SLUB_STATS is enabled.
|
||||
|
||||
What: /sys/kernel/slab/cache/hwcache_align
|
||||
Date: May 2007
|
||||
KernelVersion: 2.6.22
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The hwcache_align file is read-only and specifies whether
|
||||
objects are aligned on cachelines.
|
||||
|
||||
What: /sys/kernel/slab/cache/min_partial
|
||||
Date: February 2009
|
||||
KernelVersion: 2.6.30
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
David Rientjes <rientjes@google.com>
|
||||
Description:
|
||||
The min_partial file specifies how many empty slabs shall
|
||||
remain on a node's partial list to avoid the overhead of
|
||||
allocating new slabs. Such slabs may be reclaimed by utilizing
|
||||
the shrink file.
|
||||
|
||||
What: /sys/kernel/slab/cache/object_size
|
||||
Date: May 2007
|
||||
KernelVersion: 2.6.22
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The object_size file is read-only and specifies the cache's
|
||||
object size.
|
||||
|
||||
What: /sys/kernel/slab/cache/objects
|
||||
Date: May 2007
|
||||
KernelVersion: 2.6.22
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The objects file is read-only and displays how many objects are
|
||||
active and from which nodes they are from.
|
||||
|
||||
What: /sys/kernel/slab/cache/objects_partial
|
||||
Date: April 2008
|
||||
KernelVersion: 2.6.26
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The objects_partial file is read-only and displays how many
|
||||
objects are on partial slabs and from which nodes they are
|
||||
from.
|
||||
|
||||
What: /sys/kernel/slab/cache/objs_per_slab
|
||||
Date: May 2007
|
||||
KernelVersion: 2.6.22
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The file objs_per_slab is read-only and specifies how many
|
||||
objects may be allocated from a single slab of the order
|
||||
specified in /sys/kernel/slab/cache/order.
|
||||
|
||||
What: /sys/kernel/slab/cache/order
|
||||
Date: May 2007
|
||||
KernelVersion: 2.6.22
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The order file specifies the page order at which new slabs are
|
||||
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.
|
||||
|
||||
What: /sys/kernel/slab/cache/order_fallback
|
||||
Date: April 2008
|
||||
KernelVersion: 2.6.26
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The file order_fallback is read-only and specifies how many
|
||||
times an allocation of a new slab has not been possible at the
|
||||
cache's order and instead fallen back to its minimum possible
|
||||
order.
|
||||
Available when CONFIG_SLUB_STATS is enabled.
|
||||
|
||||
What: /sys/kernel/slab/cache/partial
|
||||
Date: May 2007
|
||||
KernelVersion: 2.6.22
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The partial file is read-only and displays how long many
|
||||
partial slabs there are and how long each node's list is.
|
||||
|
||||
What: /sys/kernel/slab/cache/poison
|
||||
Date: May 2007
|
||||
KernelVersion: 2.6.22
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The poison file specifies whether objects should be poisoned
|
||||
when a new slab is allocated.
|
||||
|
||||
What: /sys/kernel/slab/cache/reclaim_account
|
||||
Date: May 2007
|
||||
KernelVersion: 2.6.22
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The reclaim_account file specifies whether the cache's objects
|
||||
are reclaimable (and grouped by their mobility).
|
||||
|
||||
What: /sys/kernel/slab/cache/red_zone
|
||||
Date: May 2007
|
||||
KernelVersion: 2.6.22
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The red_zone file specifies whether the cache's objects are red
|
||||
zoned.
|
||||
|
||||
What: /sys/kernel/slab/cache/remote_node_defrag_ratio
|
||||
Date: January 2008
|
||||
KernelVersion: 2.6.25
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The file remote_node_defrag_ratio specifies the percentage of
|
||||
times SLUB will attempt to refill the cpu slab with a partial
|
||||
slab from a remote node as opposed to allocating a new slab on
|
||||
the local node. This reduces the amount of wasted memory over
|
||||
the entire system but can be expensive.
|
||||
Available when CONFIG_NUMA is enabled.
|
||||
|
||||
What: /sys/kernel/slab/cache/sanity_checks
|
||||
Date: May 2007
|
||||
KernelVersion: 2.6.22
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The sanity_checks file specifies whether expensive checks
|
||||
should be performed on free and, at minimum, enables double free
|
||||
checks. Caches that enable sanity_checks cannot be merged with
|
||||
caches that do not.
|
||||
|
||||
What: /sys/kernel/slab/cache/shrink
|
||||
Date: May 2007
|
||||
KernelVersion: 2.6.22
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The shrink file is written when memory should be reclaimed from
|
||||
a cache. Empty partial slabs are freed and the partial list is
|
||||
sorted so the slabs with the fewest available objects are used
|
||||
first.
|
||||
|
||||
What: /sys/kernel/slab/cache/slab_size
|
||||
Date: May 2007
|
||||
KernelVersion: 2.6.22
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The slab_size file is read-only and specifies the object size
|
||||
with metadata (debugging information and alignment) in bytes.
|
||||
|
||||
What: /sys/kernel/slab/cache/slabs
|
||||
Date: May 2007
|
||||
KernelVersion: 2.6.22
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The slabs file is read-only and displays how long many slabs
|
||||
there are (both cpu and partial) and from which nodes they are
|
||||
from.
|
||||
|
||||
What: /sys/kernel/slab/cache/store_user
|
||||
Date: May 2007
|
||||
KernelVersion: 2.6.22
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The store_user file specifies whether the location of
|
||||
allocation or free should be tracked for a cache.
|
||||
|
||||
What: /sys/kernel/slab/cache/total_objects
|
||||
Date: April 2008
|
||||
KernelVersion: 2.6.26
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The total_objects file is read-only and displays how many total
|
||||
objects a cache has and from which nodes they are from.
|
||||
|
||||
What: /sys/kernel/slab/cache/trace
|
||||
Date: May 2007
|
||||
KernelVersion: 2.6.22
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
The trace file specifies whether object allocations and frees
|
||||
should be traced.
|
||||
|
||||
What: /sys/kernel/slab/cache/validate
|
||||
Date: May 2007
|
||||
KernelVersion: 2.6.22
|
||||
Contact: Pekka Enberg <penberg@cs.helsinki.fi>,
|
||||
Christoph Lameter <cl@linux-foundation.org>
|
||||
Description:
|
||||
Writing to the validate file causes SLUB to traverse all of its
|
||||
cache's objects and check the validity of metadata.
|
||||
|
|
@ -60,6 +60,7 @@
|
|||
#include <linux/kernel.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/mm.h>
|
||||
#include <linux/swap.h> /* struct reclaim_state */
|
||||
#include <linux/cache.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/module.h>
|
||||
|
|
@ -255,6 +256,8 @@ static void *slob_new_pages(gfp_t gfp, int order, int node)
|
|||
|
||||
static void slob_free_pages(void *b, int order)
|
||||
{
|
||||
if (current->reclaim_state)
|
||||
current->reclaim_state->reclaimed_slab += 1 << order;
|
||||
free_pages((unsigned long)b, order);
|
||||
}
|
||||
|
||||
|
|
@ -407,7 +410,7 @@ static void slob_free(void *block, int size)
|
|||
spin_unlock_irqrestore(&slob_lock, flags);
|
||||
clear_slob_page(sp);
|
||||
free_slob_page(sp);
|
||||
free_page((unsigned long)b);
|
||||
slob_free_pages(b, 0);
|
||||
return;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -9,6 +9,7 @@
|
|||
*/
|
||||
|
||||
#include <linux/mm.h>
|
||||
#include <linux/swap.h> /* struct reclaim_state */
|
||||
#include <linux/module.h>
|
||||
#include <linux/bit_spinlock.h>
|
||||
#include <linux/interrupt.h>
|
||||
|
|
@ -1170,6 +1171,8 @@ static void __free_slab(struct kmem_cache *s, struct page *page)
|
|||
|
||||
__ClearPageSlab(page);
|
||||
reset_page_mapcount(page);
|
||||
if (current->reclaim_state)
|
||||
current->reclaim_state->reclaimed_slab += pages;
|
||||
__free_pages(page, order);
|
||||
}
|
||||
|
||||
|
|
@ -1909,7 +1912,7 @@ static inline int calculate_order(int size)
|
|||
* Doh this slab cannot be placed using slub_max_order.
|
||||
*/
|
||||
order = slab_order(size, 1, MAX_ORDER, 1);
|
||||
if (order <= MAX_ORDER)
|
||||
if (order < MAX_ORDER)
|
||||
return order;
|
||||
return -ENOSYS;
|
||||
}
|
||||
|
|
@ -2522,6 +2525,7 @@ __setup("slub_min_order=", setup_slub_min_order);
|
|||
static int __init setup_slub_max_order(char *str)
|
||||
{
|
||||
get_option(&str, &slub_max_order);
|
||||
slub_max_order = min(slub_max_order, MAX_ORDER - 1);
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue