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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2020-10-16 05:05:56 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-16 20:11:15 +0200 |
| commit | 3efe62e466958a1e59e68e0faa5c66b5b99b17ce (patch) | |
| tree | 7c452c0de48cdab0de45ca8c692af29d4b95eb9f /mm/vmscan.c | |
| parent | mm/page-writeback: support tail pages in wait_for_stable_page (diff) | |
| download | linux-3efe62e466958a1e59e68e0faa5c66b5b99b17ce.tar.xz linux-3efe62e466958a1e59e68e0faa5c66b5b99b17ce.zip | |
mm/vmscan: allow arbitrary sized pages to be paged out
Remove the assumption that a compound page has HPAGE_PMD_NR pins from the
page cache.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: SeongJae Park <sjpark@amazon.de>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: "Huang, Ying" <ying.huang@intel.com>
Link: https://lkml.kernel.org/r/20200908195539.25896-12-willy@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmscan.c')
| -rw-r--r-- | mm/vmscan.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index 879fb57c5045..fc4dee9b91f8 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -725,8 +725,7 @@ static inline int is_page_cache_freeable(struct page *page) * that isolated the page, the page cache and optional buffer * heads at page->private. */ - int page_cache_pins = PageTransHuge(page) && PageSwapCache(page) ? - HPAGE_PMD_NR : 1; + int page_cache_pins = thp_nr_pages(page); return page_count(page) - page_has_private(page) == 1 + page_cache_pins; } |