The patch titled
Subject: mm/swap: optimise get_shadow_from_swap_cache
has been removed from the -mm tree. Its filename was
mm-swap-optimise-get_shadow_from_swap_cache.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: mm/swap: optimise get_shadow_from_swap_cache
There's no need to get a reference to the page, just load the entry and
see if it's a shadow entry.
Link: https://lkml.kernel.org/r/20201112212641.27837-4-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Cc: Dave Chinner <dchinner@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: William Kucharski <william.kucharski@xxxxxxxxxx>
Cc: Yang Shi <yang.shi@xxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/swap_state.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
--- a/mm/swap_state.c~mm-swap-optimise-get_shadow_from_swap_cache
+++ a/mm/swap_state.c
@@ -87,11 +87,9 @@ void *get_shadow_from_swap_cache(swp_ent
pgoff_t idx = swp_offset(entry);
struct page *page;
- page = find_get_entry(address_space, idx);
+ page = xa_load(&address_space->i_pages, idx);
if (xa_is_value(page))
return page;
- if (page)
- put_page(page);
return NULL;
}
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
