+ mm-vmscan-remove-prefetch_prev_lru_page.patch added to -mm tree

+ mm-vmscan-remove-prefetch_prev_lru_page.patch added to -mm tree

[akpm]

The patch titled
     Subject: mm/vmscan: remove prefetch_prev_lru_page
has been added to the -mm tree.  Its filename is
     mm-vmscan-remove-prefetch_prev_lru_page.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/mm-vmscan-remove-prefetch_prev_lru_page.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/mm-vmscan-remove-prefetch_prev_lru_page.patch

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------------------------------------------------------
From: Alex Shi <alex.shi@linux.alibaba.com>
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@linux.alibaba.com
Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Qian Cai <cai@lca.pw>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 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