slab: rename slab_break_gfp_order to slab_max_order
slab_break_gfp_order is more appropriately named slab_max_order since it enforces the maximum order size of slabs as long as a single object will still fit. Also rename BREAK_GFP_ORDER_{LO,HI} accordingly. Acked-by: Christoph Lameter <cl@linux.com> Signed-off-by: David Rientjes <rientjes@google.com> Signed-off-by: Pekka Enberg <penberg@kernel.org>
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10
mm/slab.c
10
mm/slab.c
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@ -481,9 +481,9 @@ EXPORT_SYMBOL(slab_buffer_size);
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/*
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* Do not go above this order unless 0 objects fit into the slab.
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*/
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#define BREAK_GFP_ORDER_HI 1
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#define BREAK_GFP_ORDER_LO 0
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static int slab_break_gfp_order = BREAK_GFP_ORDER_LO;
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#define SLAB_MAX_ORDER_HI 1
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#define SLAB_MAX_ORDER_LO 0
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static int slab_max_order = SLAB_MAX_ORDER_LO;
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/*
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* Functions for storing/retrieving the cachep and or slab from the page
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@ -1502,7 +1502,7 @@ void __init kmem_cache_init(void)
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* page orders on machines with more than 32MB of memory.
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*/
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if (totalram_pages > (32 << 20) >> PAGE_SHIFT)
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slab_break_gfp_order = BREAK_GFP_ORDER_HI;
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slab_max_order = SLAB_MAX_ORDER_HI;
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/* Bootstrap is tricky, because several objects are allocated
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* from caches that do not exist yet:
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@ -2112,7 +2112,7 @@ static size_t calculate_slab_order(struct kmem_cache *cachep,
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* Large number of objects is good, but very large slabs are
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* currently bad for the gfp()s.
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*/
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if (gfporder >= slab_break_gfp_order)
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if (gfporder >= slab_max_order)
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break;
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/*
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