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mm/ksm: use folio in remove_rmap_item_from_tree

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To save 2 compound_head calls.

Link: https://lkml.kernel.org/r/20240411061713.1847574-3-alexs@kernel.org
Signed-off-by: Alex Shi (tencent) <alexs@kernel.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Izik Eidus <izik.eidus@ravellosystems.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Alex Shi (tencent) 2024-04-11 14:17:03 +08:00 committed by Andrew Morton
parent b91f94729d
commit f39b6e2dc1
1 changed files with 5 additions and 5 deletions
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10
mm/ksm.c
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@ -1006,16 +1006,16 @@ static void remove_rmap_item_from_tree(struct ksm_rmap_item *rmap_item)
{
if (rmap_item->address & STABLE_FLAG) {
struct ksm_stable_node *stable_node;
struct page *page;
struct folio *folio;
stable_node = rmap_item->head;
page = get_ksm_page(stable_node, GET_KSM_PAGE_LOCK);
if (!page)
folio = ksm_get_folio(stable_node, GET_KSM_PAGE_LOCK);
if (!folio)
goto out;
hlist_del(&rmap_item->hlist);
unlock_page(page);
put_page(page);
folio_unlock(folio);
folio_put(folio);
if (!hlist_empty(&stable_node->hlist))
ksm_pages_sharing--;