nfsd: make 'boot_time' 64-bit wide

The local boot time variable gets truncated to time_t at the moment,
which can lead to slightly odd behavior on 32-bit architectures.

Use ktime_get_real_seconds() instead of get_seconds() to always
get a 64-bit result, and keep it that way wherever possible.

It still gets truncated in a few places:

- When assigning to cl_clientid.cl_boot, this is already documented
  and is only used as a unique identifier.

- In clients_still_reclaiming(), the truncation is to 'unsigned long'
  in order to use the 'time_before() helper.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/nfsd/netns.h b/fs/nfsd/netns.h
index 9a4ef815fb8c..29bbe28eda53 100644
--- a/fs/nfsd/netns.h
+++ b/fs/nfsd/netns.h
@@ -40,7 +40,7 @@ struct nfsd_net {
 
 	struct lock_manager nfsd4_manager;
 	bool grace_ended;
-	time_t boot_time;
+	time64_t boot_time;
 
 	/* internal mount of the "nfsd" pseudofilesystem: */
 	struct vfsmount *nfsd_mnt;