linux-kernel - [PATCH V2 1/13] block: xen: use time_is_before_eq

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Date:   Thu, 10 Feb 2022 18:30:24 -0800
From:   Qing Wang <wangqing@...o.com>
To:     Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Roger Pau Monné <roger.pau@...rix.com>,
        Jens Axboe <axboe@...nel.dk>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        "Pan, Xinhui" <Xinhui.Pan@....com>,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        Jiri Kosina <jikos@...nel.org>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Alasdair Kergon <agk@...hat.com>,
        Mike Snitzer <snitzer@...hat.com>, dm-devel@...hat.com,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hverkuil@...all.nl>,
        xen-devel@...ts.xenproject.org, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
        intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        amd-gfx@...ts.freedesktop.org, linux-input@...r.kernel.org,
        linux-media@...r.kernel.org
Cc:     Wang Qing <wangqing@...o.com>
Subject: [PATCH V2 1/13] block: xen: use time_is_before_eq_jiffies() instead of jiffies judgment

From: Wang Qing <wangqing@...o.com>

It is better to use time_xxx() directly instead of jiffies judgment
for understanding.

Signed-off-by: Wang Qing <wangqing@...o.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_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