Messages in this thread | | | Date | Thu, 11 Apr 2024 09:51:13 -0700 (PDT) | From | "Christoph Lameter (Ampere)" <> | Subject | Re: [PATCH] slub: Clear __GFP_COMP flag when allocating 0 order page |
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On Thu, 11 Apr 2024, Haifeng Xu wrote:
> @@ -1875,6 +1875,13 @@ static inline struct slab *alloc_slab_page(gfp_t flags, int node, > struct slab *slab; > unsigned int order = oo_order(oo); > > + /* > + * If fallback to the minimum order allocation and the order is 0, > + * clear the __GFP_COMP flag. > + */ > + if (order == 0) > + flags = flags & ~__GFP_COMP;
This would be better placed in allocate_slab() when the need for a fallback to a lower order is detected after the first call to alloc_slab_page().
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