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From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
To: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>,
	"Kirill A . Shutemov" <kirill@shutemov.name>,
	Huang Ying <ying.huang@intel.com>
Subject: [PATCH 01/11] mm/filemap: Fix page cache removal for arbitrary sized THPs
Date: Tue,  8 Sep 2020 20:55:28 +0100	[thread overview]
Message-ID: <20200908195539.25896-2-willy@infradead.org> (raw)
In-Reply-To: <20200908195539.25896-1-willy@infradead.org>

page_cache_free_page() assumes THPs are PMD_SIZE; fix that assumption.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
 mm/filemap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/filemap.c b/mm/filemap.c
index 1aaea26556cc..c60b94fd74ec 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -249,7 +249,7 @@ static void page_cache_free_page(struct address_space *mapping,
 		freepage(page);
 
 	if (PageTransHuge(page) && !PageHuge(page)) {
-		page_ref_sub(page, HPAGE_PMD_NR);
+		page_ref_sub(page, thp_nr_pages(page));
 		VM_BUG_ON_PAGE(page_count(page) <= 0, page);
 	} else {
 		put_page(page);
-- 
2.28.0



  reply	other threads:[~2020-09-08 19:55 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-08 19:55 [PATCH 00/11] Remove assumptions of THP size Matthew Wilcox (Oracle)
2020-09-08 19:55 ` Matthew Wilcox (Oracle) [this message]
2020-09-09 14:27   ` [PATCH 01/11] mm/filemap: Fix page cache removal for arbitrary sized THPs Kirill A. Shutemov
2020-09-15  7:13   ` SeongJae Park
2020-09-08 19:55 ` [PATCH 02/11] mm/memory: Remove page fault assumption of compound page size Matthew Wilcox (Oracle)
2020-09-09 14:29   ` Kirill A. Shutemov
2020-09-09 14:50     ` Matthew Wilcox
2020-09-11 14:51       ` Kirill A. Shutemov
2020-09-08 19:55 ` [PATCH 03/11] mm/page_owner: Change split_page_owner to take a count Matthew Wilcox (Oracle)
2020-09-09 14:42   ` Kirill A. Shutemov
2020-09-15  7:17   ` SeongJae Park
2020-10-13 13:52   ` Matthew Wilcox
2020-09-08 19:55 ` [PATCH 04/11] mm/huge_memory: Fix total_mapcount assumption of page size Matthew Wilcox (Oracle)
2020-09-15  7:21   ` SeongJae Park
2020-09-08 19:55 ` [PATCH 05/11] mm/huge_memory: Fix split " Matthew Wilcox (Oracle)
2020-09-15  7:23   ` SeongJae Park
2020-09-08 19:55 ` [PATCH 06/11] mm/huge_memory: Fix page_trans_huge_mapcount assumption of THP size Matthew Wilcox (Oracle)
2020-09-09 14:45   ` Kirill A. Shutemov
2020-09-15  7:24   ` SeongJae Park
2020-09-08 19:55 ` [PATCH 07/11] mm/huge_memory: Fix can_split_huge_page " Matthew Wilcox (Oracle)
2020-09-09 14:46   ` Kirill A. Shutemov
2020-09-15  7:25   ` SeongJae Park
2020-09-16  1:44   ` Huang, Ying
2020-09-08 19:55 ` [PATCH 08/11] mm/rmap: Fix assumptions " Matthew Wilcox (Oracle)
2020-09-09 14:47   ` Kirill A. Shutemov
2020-09-15  7:27   ` SeongJae Park
2020-09-08 19:55 ` [PATCH 09/11] mm/truncate: Fix truncation for pages of arbitrary size Matthew Wilcox (Oracle)
2020-09-09 14:50   ` Kirill A. Shutemov
2020-09-15  7:36   ` SeongJae Park
2020-09-08 19:55 ` [PATCH 10/11] mm/page-writeback: Support tail pages in wait_for_stable_page Matthew Wilcox (Oracle)
2020-09-09 14:53   ` Kirill A. Shutemov
2020-09-15  7:37   ` SeongJae Park
2020-09-08 19:55 ` [PATCH 11/11] mm/vmscan: Allow arbitrary sized pages to be paged out Matthew Wilcox (Oracle)
2020-09-09 14:55   ` Kirill A. Shutemov
2020-09-15  7:40   ` SeongJae Park
2020-09-15 12:52     ` Matthew Wilcox
2020-09-16  1:40       ` Huang, Ying
2020-09-16  6:09         ` SeongJae Park
2020-09-30 12:13         ` Matthew Wilcox

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