[RFC PATCH] ceph: initialize superblock s_time_gran to 1

From: Luis Henriques
Date: Thu Jun 27 2019 - 09:51:29 EST


Having granularity set to 1us results in having inode timestamps with a
accurancy different from the fuse client (i.e. atime, ctime and mtime will
always end with '000'). This patch normalizes this behaviour and sets the
granularity to 1.

Signed-off-by: Luis Henriques <lhenriques@xxxxxxxx>
---
fs/ceph/super.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

Hi!

As far as I could see there are no other side-effects of changing
s_time_gran but I'm really not sure why it was initially set to 1000 in
the first place so I may be missing something.

diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index d57fa60dcd43..35dd75bc9cd0 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -980,7 +980,7 @@ static int ceph_set_super(struct super_block *s, void *data)
s->s_d_op = &ceph_dentry_ops;
s->s_export_op = &ceph_export_ops;

- s->s_time_gran = 1000; /* 1000 ns == 1 us */
+ s->s_time_gran = 1;

ret = set_anon_super(s, NULL); /* what is that second arg for? */
if (ret != 0)