Commit ae026204 authored by Kirill A. Shutemov's avatar Kirill A. Shutemov Committed by Linus Torvalds

thp: make deferred_split_scan() work again

We need to iterate over split_queue, not local empty list to get
anything split from the shrinker.

Fixes: e3ae1953 ("thp: limit number of object to scan on deferred_split_scan()")
Signed-off-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 12352d3c
...@@ -3482,7 +3482,7 @@ static unsigned long deferred_split_scan(struct shrinker *shrink, ...@@ -3482,7 +3482,7 @@ static unsigned long deferred_split_scan(struct shrinker *shrink,
spin_lock_irqsave(&pgdata->split_queue_lock, flags); spin_lock_irqsave(&pgdata->split_queue_lock, flags);
/* Take pin on all head pages to avoid freeing them under us */ /* Take pin on all head pages to avoid freeing them under us */
list_for_each_safe(pos, next, &list) { list_for_each_safe(pos, next, &pgdata->split_queue) {
page = list_entry((void *)pos, struct page, mapping); page = list_entry((void *)pos, struct page, mapping);
page = compound_head(page); page = compound_head(page);
if (get_page_unless_zero(page)) { if (get_page_unless_zero(page)) {
......
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