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mm/swap: implement workingset detection for anonymous LRU

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This patch implements workingset detection for anonymous LRU.  All the
infrastructure is implemented by the previous patches so this patch just
activates the workingset detection by installing/retrieving the shadow
entry and adding refault calculation.

Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Hugh Dickins <hughd@google.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Minchan Kim <minchan@kernel.org>
Link: http://lkml.kernel.org/r/1595490560-15117-6-git-send-email-iamjoonsoo.kim@lge.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Joonsoo Kim
2020-08-11 18:30:50 -07:00
committed by Linus Torvalds
parent 3852f6768e
commit aae466b005
5 changed files with 43 additions and 19 deletions
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11
mm/memory.c
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@@ -3098,6 +3098,7 @@ vm_fault_t do_swap_page(struct vm_fault *vmf)
int locked;
int exclusive = 0;
vm_fault_t ret = 0;
void *shadow = NULL;
if (!pte_unmap_same(vma->vm_mm, vmf->pmd, vmf->pte, vmf->orig_pte))
goto out;
@@ -3149,13 +3150,9 @@ vm_fault_t do_swap_page(struct vm_fault *vmf)
goto out_page;
}
/*
* XXX: Move to lru_cache_add() when it
* supports new vs putback
*/
spin_lock_irq(&page_pgdat(page)->lru_lock);
lru_note_cost_page(page);
spin_unlock_irq(&page_pgdat(page)->lru_lock);
shadow = get_shadow_from_swap_cache(entry);
if (shadow)
workingset_refault(page, shadow);
lru_cache_add(page);
swap_readpage(page, true);