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exfat: properly set s_time_gran

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The s_time_gran superblock field indicates the on-disk nanosecond
granularity of timestamps, and for exfat that seems to be 10ms, so
set s_time_gran to 10000000ns. Without this, in-memory timestamps
change when they get re-read from disk.

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Git-commit: 674a9985b8e35288225f2b67829a7dee3bf761da
Git-repo: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Signed-off-by: lixiang <lixiang@codeaurora.org>
This commit is contained in:
Eric Sandeen 2021-02-10 14:25:17 +08:00 • committed by lixiang
commit aeabe3d3e8
1 changed files with 1 additions and 1 deletions
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2
fs/exfat/super.c
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@ -535,7 +535,7 @@ static int exfat_fill_super(struct super_block *sb, struct fs_context *fc)
sb->s_magic = EXFAT_SUPER_MAGIC;
sb->s_op = &exfat_sops;
sb->s_time_gran = 1;
sb->s_time_gran = 10 * NSEC_PER_MSEC;
sb->s_time_min = EXFAT_MIN_TIMESTAMP_SECS;
sb->s_time_max = EXFAT_MAX_TIMESTAMP_SECS;