linux-kernel - [PATCH] fuse: use DIV_ROUND_UP helper macro for calculations

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Date:   Tue, 25 May 2021 15:40:47 +0800
From:   Wu Bo <wubo40@...wei.com>
To:     <miklos@...redi.hu>, <linux-fsdevel@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC:     <linfeilong@...wei.com>, <wubo40@...wei.com>
Subject: [PATCH] fuse: use DIV_ROUND_UP helper macro for calculations

From: Wu Bo <wubo40@...wei.com>

Replace open coded divisor calculations with the DIV_ROUND_UP kernel
macro for better readability.

Signed-off-by: Wu Bo <wubo40@...wei.com>
---
 fs/fuse/file.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 09ef2a4..62443eb 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -1405,7 +1405,7 @@ static int fuse_get_user_pages(struct fuse_args_pages *ap, struct iov_iter *ii,
 		nbytes += ret;
 
 		ret += start;
-		npages = (ret + PAGE_SIZE - 1) / PAGE_SIZE;
+		npages = DIV_ROUND_UP(ret, PAGE_SIZE);
 
 		ap->descs[ap->num_pages].offset = start;
 		fuse_page_descs_length_init(ap->descs, ap->num_pages, npages);
-- 
1.8.3.1