kmem_cache is a frequently used data in kernel. During the code reading, I
found maybe we could save some space in some cases.
1. On 64bit arch, type int will occupy a word if it doesn't sit well.
2. cpu_slab->partial is just used when CONFIG_SLUB_CPU_PARTIAL is set
3. cpu_partial is just used when CONFIG_SLUB_CPU_PARTIAL is set, while just
save some space on 32bit arch.
Wei Yang (3):
mm/slub: pack red_left_pad with another int to save a word
mm/slub: wrap cpu_slab->partial in CONFIG_SLUB_CPU_PARTIAL
mm/slub: wrap kmem_cache->cpu_partial in config
CONFIG_SLUB_CPU_PARTIAL
include/linux/slub_def.h | 6 +++-
mm/slub.c | 88 ++++++++++++++++++++++++++++++++----------------
2 files changed, 64 insertions(+), 30 deletions(-)
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2.11.0
