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| author | Kefeng Wang <wangkefeng.wang@huawei.com> | 2024-05-21 21:03:15 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-07-04 18:05:50 -0700 |
| commit | 593a10dabe08dcf93259fce2badd8dc2528859a8 (patch) | |
| tree | 427c82d0d3b5ae47addb1a837061123bef728f73 /mm/page_alloc.c | |
| parent | 8bf890c8161215bd1fbd1a6d9b61acbb8eac165b (diff) | |
| download | linux-593a10dabe08dcf93259fce2badd8dc2528859a8.tar.gz linux-593a10dabe08dcf93259fce2badd8dc2528859a8.tar.bz2 linux-593a10dabe08dcf93259fce2badd8dc2528859a8.zip | |
mm: refactor folio_undo_large_rmappable()
Folios of order <= 1 are not in deferred list, the check of order is added
into folio_undo_large_rmappable() from commit 8897277acfef ("mm: support
order-1 folios in the page cache"), but there is a repeated check for
small folio (order 0) during each call of the
folio_undo_large_rmappable(), so only keep folio_order() check inside the
function.
In addition, move all the checks into header file to save a function call
for non-large-rmappable or empty deferred_list folio.
Link: https://lkml.kernel.org/r/20240521130315.46072-1-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Lance Yang <ioworker0@gmail.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 8a0fd4137684..3f3d83def9be 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2661,8 +2661,7 @@ void free_unref_folios(struct folio_batch *folios) unsigned long pfn = folio_pfn(folio); unsigned int order = folio_order(folio); - if (order > 0 && folio_test_large_rmappable(folio)) - folio_undo_large_rmappable(folio); + folio_undo_large_rmappable(folio); if (!free_pages_prepare(&folio->page, order)) continue; /* |