* [PATCH] block: xen: use time_after_eq() instead of jiffies judgment
@ 2022-02-10 8:29 Qing Wang
2022-02-10 14:55 ` Roger Pau Monné
0 siblings, 1 reply; 2+ messages in thread
From: Qing Wang @ 2022-02-10 8:29 UTC (permalink / raw)
To: Konrad Rzeszutek Wilk, Roger Pau Monné,
Jens Axboe, xen-devel, linux-block, linux-kernel
Cc: Wang Qing
From: Wang Qing <wangqing@vivo.com>
It is better to use time_xxx() directly instead of jiffies judgment
for understanding.
Signed-off-by: Wang Qing <wangqing@vivo.com>
---
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_after_eq(jiffies, persistent_gnt->last_used + HZ * pgrant_timeout);
}
#define vaddr(page) ((unsigned long)pfn_to_kaddr(page_to_pfn(page)))
--
2.7.4
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] block: xen: use time_after_eq() instead of jiffies judgment
2022-02-10 8:29 [PATCH] block: xen: use time_after_eq() instead of jiffies judgment Qing Wang
@ 2022-02-10 14:55 ` Roger Pau Monné
0 siblings, 0 replies; 2+ messages in thread
From: Roger Pau Monné @ 2022-02-10 14:55 UTC (permalink / raw)
To: Qing Wang
Cc: Konrad Rzeszutek Wilk, Jens Axboe, xen-devel, linux-block, linux-kernel
On Thu, Feb 10, 2022 at 12:29:23AM -0800, Qing Wang wrote:
> From: Wang Qing <wangqing@vivo.com>
>
> It is better to use time_xxx() directly instead of jiffies judgment
> for understanding.
>
> Signed-off-by: Wang Qing <wangqing@vivo.com>
Acked-by: Roger Pau Monné <roger.pau@citrix.com>
Doesn't look that different to me TBH, but if people find it easier.
Thanks, Roger.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2022-02-10 14:55 ` Roger Pau Monné
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