lkml.org 
[lkml]   [2020]   [Apr]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v3 19/25] mm: Allow large pages to be removed from the page cache
Date
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>

page_cache_free_page() assumes compound pages 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 842afee3d066..8c174e6064d4 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -248,7 +248,7 @@ 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, hpage_nr_pages(page));
VM_BUG_ON_PAGE(page_count(page) <= 0, page);
} else {
put_page(page);
--
2.26.2
\
 
 \ /
  Last update: 2020-04-29 15:41    [W:0.256 / U:0.492 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site