From: Wang Qing <wangqing@xxxxxxxx>
It is better to use time_xxx() directly instead of jiffies judgment
for understanding.
Signed-off-by: Wang Qing <wangqing@xxxxxxxx>
---
drivers/block/xen-blkback/blkback.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c
index d1e2646..aecc1f4
--- a/drivers/block/xen-blkback/blkback.c
+++ b/drivers/block/xen-blkback/blkback.c
@@ -42,6 +42,7 @@
#include <linux/delay.h>
#include <linux/freezer.h>
#include <linux/bitmap.h>
+#include <linux/jiffies.h>
#include <xen/events.h>
#include <xen/page.h>
@@ -134,8 +135,8 @@ module_param(log_stats, int, 0644);
static inline bool persistent_gnt_timeout(struct persistent_gnt *persistent_gnt)
{
- return pgrant_timeout && (jiffies - persistent_gnt->last_used >=
- HZ * pgrant_timeout);
+ return pgrant_timeout && time_is_before_eq_jiffies(
+ persistent_gnt->last_used + HZ * pgrant_timeout);
}
#define vaddr(page) ((unsigned long)pfn_to_kaddr(page_to_pfn(page)))
--
2.7.4
--
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