From: Alex Shi <alex.shi@xxxxxxxxxxxxxxxxx> Subject: mm/vmscan: remove prefetch_prev_lru_page This macro was never used in git history. So better to remove. Link: http://lkml.kernel.org/r/1579006500-127143-1-git-send-email-alex.shi@xxxxxxxxxxxxxxxxx Signed-off-by: Alex Shi <alex.shi@xxxxxxxxxxxxxxxxx> Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Cc: Qian Cai <cai@xxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/vmscan.c | 14 -------------- 1 file changed, 14 deletions(-) --- a/mm/vmscan.c~mm-vmscan-remove-prefetch_prev_lru_page +++ a/mm/vmscan.c @@ -146,20 +146,6 @@ struct scan_control { struct reclaim_state reclaim_state; }; -#ifdef ARCH_HAS_PREFETCH -#define prefetch_prev_lru_page(_page, _base, _field) \ - do { \ - if ((_page)->lru.prev != _base) { \ - struct page *prev; \ - \ - prev = lru_to_page(&(_page->lru)); \ - prefetch(&prev->_field); \ - } \ - } while (0) -#else -#define prefetch_prev_lru_page(_page, _base, _field) do { } while (0) -#endif - #ifdef ARCH_HAS_PREFETCHW #define prefetchw_prev_lru_page(_page, _base, _field) \ do { \ _
