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Linux: Set spl_kmem_cache_slab_limit when page size !4K #12152

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Jun 3, 2021
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Linux: Set spl_kmem_cache_slab_limit when page size !4K #12152

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7 changes: 2 additions & 5 deletions module/os/linux/spl/spl-kmem-cache.c
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Original file line number Diff line number Diff line change
Expand Up @@ -100,13 +100,10 @@ MODULE_PARM_DESC(spl_kmem_cache_max_size, "Maximum size of slab in MB");
* For small objects the Linux slab allocator should be used to make the most
* efficient use of the memory. However, large objects are not supported by
* the Linux slab and therefore the SPL implementation is preferred. A cutoff
* of 16K was determined to be optimal for architectures using 4K pages.
* of 16K was determined to be optimal for architectures using 4K pages and
* to also work well on architecutres using larger 64K page sizes.
*/
#if PAGE_SIZE == 4096
unsigned int spl_kmem_cache_slab_limit = 16384;
#else
unsigned int spl_kmem_cache_slab_limit = 0;
#endif
module_param(spl_kmem_cache_slab_limit, uint, 0644);
MODULE_PARM_DESC(spl_kmem_cache_slab_limit,
"Objects less than N bytes use the Linux slab");
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