UUID calculation uses 'struct timespec' whose seconds will overflow in year 2038 and beyond for 32-bit systems. This patch removes the dependency on 'struct timespec' by using ktime_get_real(). While the patch does not fix a 'bug' as such, it is part of a larger effort to remove instances of 'struct timespec' and other data-structures suffering from y2038 problem from the kernel.

Suggested-by: Arnd Bergmann arnd@arndb.de Signed-off-by: Tina Ruchandani ruchandani.tina@gmail.com Signed-off-by: Arnd Bergmann arnd@arndb.de

diff --git a/fs/afs/main.c b/fs/afs/main.c index 35de0c04729f..129ff432391c 100644 --- a/fs/afs/main.c +++ b/fs/afs/main.c @@ -14,6 +14,7 @@ #include <linux/init.h> #include <linux/completion.h> #include <linux/sched.h> +#include <linux/ktime.h> #include "internal.h"

MODULE_DESCRIPTION("AFS Client File System"); @@ -37,7 +38,6 @@ struct workqueue_struct *afs_wq; */ static int __init afs_get_client_UUID(void) { - struct timespec ts; u64 uuidtime; u16 clockseq; int ret; @@ -48,9 +48,7 @@ static int __init afs_get_client_UUID(void) if (ret < 0) return ret;

- getnstimeofday(&ts); - uuidtime = (u64) ts.tv_sec * 1000 * 1000 * 10; - uuidtime += ts.tv_nsec / 100; + uuidtime = ktime_divns(ktime_get_real(), 100); uuidtime += AFS_UUID_TO_UNIX_TIME; afs_uuid.time_low = uuidtime; afs_uuid.time_mid = uuidtime >> 32;