* [merged mm-stable] mm-vmscan-filter-empty-page_list-at-the-beginning.patch removed from -mm tree
@ 2022-05-13 19:21 Andrew Morton
0 siblings, 0 replies; only message in thread
From: Andrew Morton @ 2022-05-13 19:21 UTC (permalink / raw)
To: mm-commits, minchan, akpm, richard.weiyang, akpm
The quilt patch titled
Subject: mm/vmscan: filter empty page_list at the beginning
has been removed from the -mm tree. Its filename was
mm-vmscan-filter-empty-page_list-at-the-beginning.patch
This patch was dropped because it was merged into the mm-stable branch\nof git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Wei Yang <richard.weiyang@gmail.com>
Subject: mm/vmscan: filter empty page_list at the beginning
node_page_list would always be !empty on finishing the loop, except
page_list is empty.
Let's handle empty page_list before doing any real work including touching
PF_MEMALLOC flag.
Link: https://lkml.kernel.org/r/20220429014426.29223-1-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/vmscan.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
--- a/mm/vmscan.c~mm-vmscan-filter-empty-page_list-at-the-beginning
+++ a/mm/vmscan.c
@@ -2568,9 +2568,12 @@ unsigned long reclaim_pages(struct list_
struct page *page;
unsigned int noreclaim_flag;
+ if (list_empty(page_list))
+ return nr_reclaimed;
+
noreclaim_flag = memalloc_noreclaim_save();
- while (!list_empty(page_list)) {
+ do {
page = lru_to_page(page_list);
if (nid == NUMA_NO_NODE)
nid = page_to_nid(page);
@@ -2583,10 +2586,9 @@ unsigned long reclaim_pages(struct list_
nr_reclaimed += reclaim_page_list(&node_page_list, NODE_DATA(nid));
nid = NUMA_NO_NODE;
- }
+ } while (!list_empty(page_list));
- if (!list_empty(&node_page_list))
- nr_reclaimed += reclaim_page_list(&node_page_list, NODE_DATA(nid));
+ nr_reclaimed += reclaim_page_list(&node_page_list, NODE_DATA(nid));
memalloc_noreclaim_restore(noreclaim_flag);
_
Patches currently in -mm which might be from richard.weiyang@gmail.com are
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2022-05-13 19:22 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-05-13 19:21 [merged mm-stable] mm-vmscan-filter-empty-page_list-at-the-beginning.patch removed from -mm tree Andrew Morton
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.