SLAB_RECLAIM_ACCOUNT caches allocate their slab pages with __GFP_RECLAIMABLE and can help against fragmentation by grouping pages by mobility, but on tiny systems mobility grouping is likely disabled anyway and ignoring SLAB_RECLAIM_ACCOUNT might instead lead to merging of caches that are made incompatible just by the flag. Thus with CONFIG_SLUB_TINY, make SLAB_RECLAIM_ACCOUNT ineffective. Signed-off-by: Vlastimil Babka <vbabka@xxxxxxx> --- include/linux/slab.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/linux/slab.h b/include/linux/slab.h index 3ce9474c90ab..1cbbda03ad06 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -129,7 +129,11 @@ /* The following flags affect the page allocator grouping pages by mobility */ /* Objects are reclaimable */ +#ifndef CONFIG_SLUB_TINY #define SLAB_RECLAIM_ACCOUNT ((slab_flags_t __force)0x00020000U) +#else +#define SLAB_RECLAIM_ACCOUNT 0 +#endif #define SLAB_TEMPORARY SLAB_RECLAIM_ACCOUNT /* Objects are short-lived */ /* -- 2.38.1
