From: Wu Bo <wubo40@huawei.com>
To: <viro@zeniv.linux.org.uk>, <herbert@gondor.apana.org.au>,
<davem@davemloft.net>, <linux-fsdevel@vger.kernel.org>,
<linux-crypto@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Cc: <linfeilong@huawei.com>, <wubo40@huawei.com>
Subject: [PATCH 2/2] fs: direct-io: use DIV_ROUND_UP helper macro for calculations
Date: Tue, 25 May 2021 16:15:20 +0800 [thread overview]
Message-ID: <1621930520-515336-3-git-send-email-wubo40@huawei.com> (raw)
In-Reply-To: <1621930520-515336-1-git-send-email-wubo40@huawei.com>
From: Wu Bo <wubo40@huawei.com>
Replace open coded divisor calculations with the DIV_ROUND_UP kernel
macro for better readability.
Signed-off-by: Wu Bo <wubo40@huawei.com>
---
fs/direct-io.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/direct-io.c b/fs/direct-io.c
index b2e86e7..6e7d402 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -195,7 +195,7 @@ static inline int dio_refill_pages(struct dio *dio, struct dio_submit *sdio)
iov_iter_advance(sdio->iter, ret);
ret += sdio->from;
sdio->head = 0;
- sdio->tail = (ret + PAGE_SIZE - 1) / PAGE_SIZE;
+ sdio->tail = DIV_ROUND_UP(ret, PAGE_SIZE);
sdio->to = ((ret - 1) & (PAGE_SIZE - 1)) + 1;
return 0;
}
--
1.8.3.1
next prev parent reply other threads:[~2021-05-25 8:08 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-25 8:15 [PATCH 0/2] use DIV_ROUND_UP helper macro for calculations Wu Bo
2021-05-25 8:15 ` [PATCH 1/2] crypto: af_alg - " Wu Bo
2021-05-25 8:37 ` Christophe Leroy
2021-05-26 8:31 ` Dave Chinner
2021-06-03 12:30 ` Herbert Xu
2021-05-25 8:15 ` Wu Bo [this message]
2021-05-25 8:38 ` [PATCH 2/2] fs: direct-io: " Christophe Leroy
2021-05-25 8:41 ` [PATCH 0/2] " Christophe Leroy
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