linux-kernel - [PATCH 12/23] mm: Use xas_erase() in collapse

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20200422150256.23473-13-jack@suse.cz>
Date:   Wed, 22 Apr 2020 17:02:45 +0200
From:   Jan Kara <jack@...e.cz>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     <linux-fsdevel@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>, Jan Kara <jack@...e.cz>
Subject: [PATCH 12/23] mm: Use xas_erase() in collapse_file()

When undoing failed collapse of ordinary pages into a huge page, use
xas_erase() to explicitly clear any xarray marks that may have been
added to entries.

Signed-off-by: Jan Kara <jack@...e.cz>
---
 mm/khugepaged.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index 99d77ffb79c2..8da820c02de7 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -1819,7 +1819,7 @@ static void collapse_file(struct mm_struct *mm,
 					break;
 				nr_none--;
 				/* Put holes back where they were */
-				xas_store(&xas, NULL);
+				xas_erase(&xas);
 				continue;
 			}
 
-- 
2.16.4