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authorArnd Bergmann <arnd@arndb.de>2018-08-21 21:59:05 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-08-22 10:52:49 -0700
commit21a1a52dbdd5c9dc17c546bbdb95038f53515d2c (patch)
tree523229f8ff9767c3e44b68c160a73f70a7f246d5
parentcbf6898fd69455092c43cd573b38d42c86ddb1e0 (diff)
downloadlinux-21a1a52dbdd5c9dc17c546bbdb95038f53515d2c.tar.bz2
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 <arnd@arndb.de> Acked-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Cc: David Howells <dhowells@redhat.com> Cc: Jeff Layton <jlayton@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--fs/nilfs2/super.c2
1 files changed, 1 insertions, 1 deletions
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 =