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| author | Christoph Lameter <cl@linux.com> | 2012-05-09 10:09:56 -0500 |
|---|---|---|
| committer | Pekka Enberg <penberg@kernel.org> | 2012-06-01 09:25:41 +0300 |
| commit | ec3ab083a7a004282ee374bdaeb0aa603521b8eb (patch) | |
| tree | 8c570d6bd284ca8357675a4e7c8409dec691f91c /include/linux/slub_def.h | |
| parent | 188fd063208942a4681d8e8a4484ad0d4ae0fda1 (diff) | |
| download | blackbird-op-linux-ec3ab083a7a004282ee374bdaeb0aa603521b8eb.tar.gz blackbird-op-linux-ec3ab083a7a004282ee374bdaeb0aa603521b8eb.zip | |
slub: Get rid of the node field
The node field is always page_to_nid(c->page). So its rather easy to
replace. Note that there maybe slightly more overhead in various hot paths
due to the need to shift the bits from page->flags. However, that is mostly
compensated for by a smaller footprint of the kmem_cache_cpu structure (this
patch reduces that to 3 words per cache) which allows better caching.
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
Diffstat (limited to 'include/linux/slub_def.h')
| -rw-r--r-- | include/linux/slub_def.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h index c2f8c8bc56ed..ebdcf4ba42ee 100644 --- a/include/linux/slub_def.h +++ b/include/linux/slub_def.h @@ -48,7 +48,6 @@ struct kmem_cache_cpu { unsigned long tid; /* Globally unique transaction id */ struct page *page; /* The slab from which we are allocating */ struct page *partial; /* Partially allocated frozen slabs */ - int node; /* The node of the page (or -1 for debug) */ #ifdef CONFIG_SLUB_STATS unsigned stat[NR_SLUB_STAT_ITEMS]; #endif |
