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| author | Arnd Bergmann <arnd@arndb.de> | 2018-02-06 15:39:21 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-02-06 18:32:45 -0800 |
| commit | fb04b91bc2c3a83e9e2ba9c5ce0f0124dd3ffef0 (patch) | |
| tree | 00e48e16224695ef3eb0cf0b29a57a51a90fea6a /fs/nilfs2/segbuf.h | |
| parent | ca3a45697be3ad59aa8f8f83d0e277b49f4b5680 (diff) | |
| download | op-kernel-dev-fb04b91bc2c3a83e9e2ba9c5ce0f0124dd3ffef0.zip op-kernel-dev-fb04b91bc2c3a83e9e2ba9c5ce0f0124dd3ffef0.tar.gz | |
nilfs2: use time64_t internally
The superblock and segment timestamps are used only internally in nilfs2
and can be read out using sysfs.
Since we are using the old 'get_seconds()' interface and store the data
as timestamps, the behavior differs slightly between 64-bit and 32-bit
kernels, the latter will show incorrect timestamps after 2038 in sysfs,
and presumably fail completely in 2106 as comparisons go wrong.
This changes nilfs2 to use time64_t with ktime_get_real_seconds() to
handle timestamps, making the behavior consistent and correct on both
32-bit and 64-bit machines.
The on-disk format already uses 64-bit timestamps, so nothing changes
there.
Link: http://lkml.kernel.org/r/20180122211050.1286441-1-arnd@arndb.de
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/nilfs2/segbuf.h')
| -rw-r--r-- | fs/nilfs2/segbuf.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/nilfs2/segbuf.h b/fs/nilfs2/segbuf.h index 7bbccc0..10e1693 100644 --- a/fs/nilfs2/segbuf.h +++ b/fs/nilfs2/segbuf.h @@ -46,7 +46,7 @@ struct nilfs_segsum_info { unsigned long nfileblk; u64 seg_seq; __u64 cno; - time_t ctime; + time64_t ctime; sector_t next; }; @@ -120,7 +120,7 @@ void nilfs_segbuf_map_cont(struct nilfs_segment_buffer *segbuf, struct nilfs_segment_buffer *prev); void nilfs_segbuf_set_next_segnum(struct nilfs_segment_buffer *, __u64, struct the_nilfs *); -int nilfs_segbuf_reset(struct nilfs_segment_buffer *, unsigned int, time_t, +int nilfs_segbuf_reset(struct nilfs_segment_buffer *, unsigned int, time64_t, __u64); int nilfs_segbuf_extend_segsum(struct nilfs_segment_buffer *); int nilfs_segbuf_extend_payload(struct nilfs_segment_buffer *, |
