From 21a1a52dbdd5c9dc17c546bbdb95038f53515d2c Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 21 Aug 2018 21:59:05 -0700 Subject: [PATCH] nilfs2: use 64-bit superblock timstamps The mount time field in the superblock uses a 64-bit timestamp, but calling get_seconds() may truncate the current time to 32 bits. This changes it to ktime_get_real_seconds() to avoid the potential overflow. Link: http://lkml.kernel.org/r/20180620075041.4154396-1-arnd@arndb.de Signed-off-by: Arnd Bergmann Acked-by: Ryusuke Konishi Cc: David Howells Cc: Jeff Layton Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/nilfs2/super.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c index 6ffeca84d7c3..1b9067cf4511 100644 --- a/fs/nilfs2/super.c +++ b/fs/nilfs2/super.c @@ -834,7 +834,7 @@ static int nilfs_setup_super(struct super_block *sb, int is_mount) sbp[0]->s_max_mnt_count = cpu_to_le16(NILFS_DFL_MAX_MNT_COUNT); sbp[0]->s_mnt_count = cpu_to_le16(mnt_count + 1); - sbp[0]->s_mtime = cpu_to_le64(get_seconds()); + sbp[0]->s_mtime = cpu_to_le64(ktime_get_real_seconds()); skip_mount_setup: sbp[0]->s_state = -- 2.30.2