linux-kernel - [PATCH] fs/buffer.c: Delete redundant uptodate check for buffer

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Date:   Thu, 1 Apr 2021 14:57:02 +0800
From:   Shaokun Zhang <zhangshaokun@...ilicon.com>
To:     <linux-fsdevel@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     Yang Guo <guoyang2@...wei.com>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Shaokun Zhang <zhangshaokun@...ilicon.com>
Subject: [PATCH] fs/buffer.c: Delete redundant uptodate check for buffer

From: Yang Guo <guoyang2@...wei.com>

The buffer uptodate state has been checked in function set_buffer_uptodate,
there is no need use buffer_uptodate before calling set_buffer_uptodate and
delete it.

Cc: Alexander Viro <viro@...iv.linux.org.uk> 
Signed-off-by: Yang Guo <guoyang2@...wei.com>
Signed-off-by: Shaokun Zhang <zhangshaokun@...ilicon.com>
---
 fs/buffer.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/fs/buffer.c b/fs/buffer.c
index 673cfbef9eec..2c0d0b3f3203 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -2055,8 +2055,7 @@ int __block_write_begin_int(struct page *page, loff_t pos, unsigned len,
 		block_end = block_start + blocksize;
 		if (block_end <= from || block_start >= to) {
 			if (PageUptodate(page)) {
-				if (!buffer_uptodate(bh))
-					set_buffer_uptodate(bh);
+				set_buffer_uptodate(bh);
 			}
 			continue;
 		}
@@ -2088,8 +2087,7 @@ int __block_write_begin_int(struct page *page, loff_t pos, unsigned len,
 			}
 		}
 		if (PageUptodate(page)) {
-			if (!buffer_uptodate(bh))
-				set_buffer_uptodate(bh);
+			set_buffer_uptodate(bh);
 			continue; 
 		}
 		if (!buffer_uptodate(bh) && !buffer_delay(bh) &&
-- 
2.7.4