linux-ext4 - [PATCH] ext4: Fix an IS

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Date:   Fri, 23 Oct 2020 14:22:32 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     "Theodore Ts'o" <tytso@....edu>,
        Harshad Shirwadkar <harshadshirwadkar@...il.com>
Cc:     Andreas Dilger <adilger.kernel@...ger.ca>,
        linux-ext4@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH] ext4: Fix an IS_ERR() vs NULL check

The ext4_find_extent() function never returns NULL, it returns error
pointers.

Fixes: 44059e503b03 ("ext4: fast commit recovery path")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
---
 fs/ext4/extents.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 6b33b9c86b00..a19d0e3a4126 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -5820,8 +5820,8 @@ int ext4_ext_replay_update_ex(struct inode *inode, ext4_lblk_t start,
 	int ret;
 
 	path = ext4_find_extent(inode, start, NULL, 0);
-	if (!path)
-		return -EINVAL;
+	if (IS_ERR(path))
+		return PTR_ERR(path);
 	ex = path[path->p_depth].p_ext;
 	if (!ex) {
 		ret = -EFSCORRUPTED;
-- 
2.28.0