The patch titled
Subject: page_alloc-consider-highatomic-reserve-in-watermark-fast-v5
has been added to the -mm tree. Its filename is
page_alloc-consider-highatomic-reserve-in-watermark-fast-v5.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/page_alloc-consider-highatomic-reserve-in-watermark-fast-v5.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/page_alloc-consider-highatomic-reserve-in-watermark-fast-v5.patch
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------------------------------------------------------
From: Jaewon Kim <jaewon31.kim@xxxxxxxxxxx>
Subject: page_alloc-consider-highatomic-reserve-in-watermark-fast-v5
remove redundant code for high-order
Link: http://lkml.kernel.org/r/20200623035242.27232-1-jaewon31.kim@xxxxxxxxxxx
Reported-by: Yong-Taek Lee <ytk.lee@xxxxxxxxxxx>
Suggested-by: Minchan Kim <minchan@xxxxxxxxxx>
Signed-off-by: Jaewon Kim <jaewon31.kim@xxxxxxxxxxx>
Acked-by: Vlastimil Babka <vbabka@xxxxxxx>
Reviewed-by: Baoquan He <bhe@xxxxxxxxxx>
Acked-by: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_alloc.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/mm/page_alloc.c~page_alloc-consider-highatomic-reserve-in-watermark-fast-v5
+++ a/mm/page_alloc.c
@@ -3592,18 +3592,18 @@ static inline bool zone_watermark_fast(s
unsigned int alloc_flags)
{
long free_pages;
- long unusable_free;
free_pages = zone_page_state(z, NR_FREE_PAGES);
- unusable_free = __zone_watermark_unusable_free(z, order, alloc_flags);
/*
* Fast check for order-0 only. If this fails then the reserves
* need to be calculated.
*/
if (!order) {
- long fast_free = free_pages - unusable_free;
+ long fast_free;
+ fast_free = free_pages;
+ fast_free -= __zone_watermark_unusable_free(z, 0, alloc_flags);
if (fast_free > mark + z->lowmem_reserve[highest_zoneidx])
return true;
}
_
Patches currently in -mm which might be from jaewon31.kim@xxxxxxxxxxx are
page_alloc-consider-highatomic-reserve-in-watermark-fast.patch
page_alloc-consider-highatomic-reserve-in-watermark-fast-v5.patch
