On Fri, 2017-11-10 at 10:02 -0600, Christopher Lameter wrote:
> On Fri, 10 Nov 2017, Miles Chen wrote:
>
> > By checking disable_higher_order_debug & (slub_debug &
> > SLAB_NEVER_MERGE), we can detect if a cache is unmergeable but become
> > mergeable because the disable_higher_order_debug=1 logic
On Fri, 10 Nov 2017, Miles Chen wrote:
> By checking disable_higher_order_debug & (slub_debug &
> SLAB_NEVER_MERGE), we can detect if a cache is unmergeable but become
> mergeable because the disable_higher_order_debug=1 logic. Those kind of
> caches should be keep unmergeable.
Acked-by: Christop
On Thu, 2017-11-09 at 09:49 -0600, Christopher Lameter wrote:
> On Thu, 9 Nov 2017, Miles Chen wrote:
>
> > In this fix patch, it disables slab merging if SLUB_DEBUG=O and
> > CONFIG_SLUB_DEBUG_ON=y but the debug features are disabled by the
> > disable_higher_order_debug logic and it holds the "s
On Thu, 9 Nov 2017, Miles Chen wrote:
> In this fix patch, it disables slab merging if SLUB_DEBUG=O and
> CONFIG_SLUB_DEBUG_ON=y but the debug features are disabled by the
> disable_higher_order_debug logic and it holds the "slab merging is off
> if any debug features are enabled" behavior.
Sound
On Wed, 2017-11-08 at 09:05 -0600, Christopher Lameter wrote:
> On Wed, 8 Nov 2017, Miles Chen wrote:
>
> > > Ok then the aliasing failed for some reason. The creation of the unique id
> > > and the alias detection needs to be in sync otherwise duplicate filenames
> > > are created. What is the di
On Wed, 8 Nov 2017, Miles Chen wrote:
> > Ok then the aliasing failed for some reason. The creation of the unique id
> > and the alias detection needs to be in sync otherwise duplicate filenames
> > are created. What is the difference there?
>
> The aliasing failed because find_mergeable() returns
On Tue, 2017-11-07 at 09:22 -0600, Christopher Lameter wrote:
> On Tue, 7 Nov 2017, miles.c...@mediatek.com wrote:
>
> > When slub_debug=O is set. It is possible to clear debug flags
> > for an "unmergeable" slab cache in kmem_cache_open().
> > It makes the "unmergeable" cache became "mergeable" i
Hi Miles,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on mmotm/master]
[also build test ERROR on v4.14-rc8 next-20171107]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system]
url:
https://github.com/0day-ci/linux/co
On Tue, 7 Nov 2017, miles.c...@mediatek.com wrote:
> When slub_debug=O is set. It is possible to clear debug flags
> for an "unmergeable" slab cache in kmem_cache_open().
> It makes the "unmergeable" cache became "mergeable" in sysfs_slab_add().
Right but that is only if disable_higher_order_debu
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