linux-kernel - [PATCH] ext4: Use IS_ERR_OR

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Message-Id: <20250730063823.313324-1-zhao.xichao@vivo.com>
Date: Wed, 30 Jul 2025 14:38:23 +0800
From: Xichao Zhao <zhao.xichao@...o.com>
To: tytso@....edu,
	adilger.kernel@...ger.ca
Cc: linux-ext4@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Xichao Zhao <zhao.xichao@...o.com>
Subject: [PATCH] ext4: Use IS_ERR_OR_NULL() helper function

Use the IS_ERR_OR_NULL() helper instead of open-coding a NULL and 
an error pointer checks to simplify the code and improve readability.

Signed-off-by: Xichao Zhao <zhao.xichao@...o.com>
---
 fs/ext4/namei.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index d83f91b62317..7dff0dc70d0c 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -723,7 +723,7 @@ struct stats dx_show_entries(struct dx_hash_info *hinfo, struct inode *dir,
 		struct stats stats;
 		printk("%s%3u:%03u hash %8x/%8x ",levels?"":"   ", i, block, hash, range);
 		bh = ext4_bread(NULL,dir, block, 0);
-		if (!bh || IS_ERR(bh))
+		if (IS_ERR_OR_NULL(bh))
 			continue;
 		stats = levels?
 		   dx_show_entries(hinfo, dir, ((struct dx_node *) bh->b_data)->entries, levels - 1):
-- 
2.34.1