A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-28 02:32:09 -04:00
Code Issues Projects Releases Packages Wiki Activity

mm/page_owner: initialize page owner without holding the zone lock

Browse source 
It's not necessary to initialized page_owner with holding the zone lock.
It would cause more contention on the zone lock although it's not a big
problem since it is just debug feature.  But, it is better than before
so do it.  This is also preparation step to use stackdepot in page owner
feature.  Stackdepot allocates new pages when there is no reserved space
and holding the zone lock in this case will cause deadlock.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Joonsoo Kim <[email protected]>
Acked-by: Vlastimil Babka <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Minchan Kim <[email protected]>
Cc: Alexander Potapenko <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: Michal Hocko <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Joonsoo Kim 2016-07-26 15:23:43 -07:00 • committed by Linus Torvalds
commit 83358ece26
3 changed files with 9 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

3
mm/compaction.c
View file

@ -19,6 +19,7 @@
#include <linux/kasan.h>
#include <linux/kthread.h>
#include <linux/freezer.h>
#include <linux/page_owner.h>
#include "internal.h"
#ifdef CONFIG_COMPACTION
@ -79,6 +80,8 @@ static void map_pages(struct list_head *list)
arch_alloc_page(page, order);
kernel_map_pages(page, nr_pages, 1);
kasan_alloc_pages(page, order);
set_page_owner(page, order, __GFP_MOVABLE);
if (order)
split_page(page, order);