lkml.org 
[lkml]   [2021]   [Feb]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH] mm: remove lru_add_drain_all in alloc_contig_range
From
Date
On 2/9/21 6:50 PM, Minchan Kim wrote:
> __alloc_contig_migrate_range already has lru_add_drain_all call
> via migrate_prep. It's necessary to move LRU taget pages into
> LRU list to be able to isolated. However, lru_add_drain_all call
> after __alloc_contig_migrate_range is called is pointless.
>
> This patch removes it.
>
> Signed-off-by: Minchan Kim <minchan@kernel.org>

Acked-by: Vlastimil Babka <vbabka@suse.cz>

> ---
> mm/page_alloc.c | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 6446778cbc6b..f8fbee73dd6d 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -8603,8 +8603,6 @@ int alloc_contig_range(unsigned long start, unsigned long end,
> * isolated thus they won't get removed from buddy.
> */
>
> - lru_add_drain_all();
> -
> order = 0;
> outer_start = start;
> while (!PageBuddy(pfn_to_page(outer_start))) {
>

\
 
 \ /
  Last update: 2021-02-10 13:19    [W:0.087 / U:0.416 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site