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Code Issues Releases Wiki Activity

mm/z3fold: remove unneeded page_mapcount_reset and ClearPagePrivate 

Page->page_type and PagePrivate are not used in z3fold.  We should remove
these confusing unneeded operations.  The z3fold do these here is due to
referring to zsmalloc's migration code which does need these operations.

Link: https://lkml.kernel.org/r/20220308134311.59086-5-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Vitaly Wool <vitaly.wool@konsulko.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Miaohe Lin 2022-04-28 23:16:05 -07:00 committed by akpm
parent ed0e5dcab3
commit 8ea2f86cea
1 changed files with 0 additions and 3 deletions
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3
mm/z3fold.c
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@ -420,7 +420,6 @@ static void free_z3fold_page(struct page *page, bool headless)
__ClearPageMovable(page);
unlock_page(page);
}
ClearPagePrivate(page);
__free_page(page);
}
@ -1635,7 +1634,6 @@ static int z3fold_page_migrate(struct address_space *mapping, struct page *newpa
INIT_LIST_HEAD(&new_zhdr->buddy);
new_mapping = page_mapping(page);
__ClearPageMovable(page);
ClearPagePrivate(page);
get_page(newpage);
z3fold_page_lock(new_zhdr);
@ -1655,7 +1653,6 @@ static int z3fold_page_migrate(struct address_space *mapping, struct page *newpa
queue_work_on(new_zhdr->cpu, pool->compact_wq, &new_zhdr->work);
page_mapcount_reset(page);
clear_bit(PAGE_CLAIMED, &page->private);
put_page(page);
return 0;