[PATCH] audit: use time_after to compare time

wuchi
2022-08-29T16:26:28Z

Using time_{*} macro to compare time is better

Signed-off-by: wuchi <wuchi.zero@gmail.com>
---
kernel/audit.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/kernel/audit.c b/kernel/audit.c
index a75978ae38ad..9bc0b0301198 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -321,7 +321,6 @@ static inline int audit_rate_check(void)
static DEFINE_SPINLOCK(lock);
unsigned long flags;
unsigned long now;
- unsigned long elapsed;
int retval = 0;

if (!audit_rate_limit) return 1;
@@ -330,9 +329,8 @@ static inline int audit_rate_check(void)
if (++messages < audit_rate_limit) {
retval = 1;
} else {
- now = jiffies;
- elapsed = now - last_check;
- if (elapsed > HZ) {
+ now = jiffies;
+ if (time_after(now, last_check + HZ)) {
last_check = now;
messages = 0;
retval = 1;
@@ -366,7 +364,7 @@ void audit_log_lost(const char *message)
if (!print) {
spin_lock_irqsave(&lock, flags);
now = jiffies;
- if (now - last_msg > HZ) {
+ if (time_after(now, last_msg + HZ)) {
print = 1;
last_msg = now;
}
--
2.20.1