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mm/vmscan.c: fix -Wunused-but-set-variable warning

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We fix the following warning when building kernel with W=1:

  mm/vmscan.c:1362:6: warning: variable 'err' set but not used [-Wunused-but-set-variable]

Link: https://lkml.kernel.org/r/20210924181218.21165-1-songkai01@inspur.com
Signed-off-by: Kai Song <songkai01@inspur.com>
Reviewed-by: Yang Shi <shy828301@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Kai Song 2021-11-05 13:42:22 -07:00 committed by Linus Torvalds
parent a500cb342c
commit cb75463ca7
1 changed files with 1 additions and 2 deletions
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3
mm/vmscan.c
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@ -1337,7 +1337,6 @@ static unsigned int demote_page_list(struct list_head *demote_pages,
{
int target_nid = next_demotion_node(pgdat->node_id);
unsigned int nr_succeeded;
int err;
if (list_empty(demote_pages))
return 0;
@ -1346,7 +1345,7 @@ static unsigned int demote_page_list(struct list_head *demote_pages,
return 0;
/* Demotion ignores all cpuset and mempolicy settings */
err = migrate_pages(demote_pages, alloc_demote_page, NULL,
migrate_pages(demote_pages, alloc_demote_page, NULL,
target_nid, MIGRATE_ASYNC, MR_DEMOTION,
&nr_succeeded);